src/viktrwlayer.c

   1 /*
   2  * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
   3  *
   4  * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #define WAYPOINT_FONT "Sans 8"
  23
  24 /* WARNING: If you go beyond this point, we are NOT responsible for any ill effects on your sanity */
  25 /* viktrwlayer.c -- 2200 lines can make a difference in the state of things */
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include "config.h"
  29 #endif
  30
  31 #include "viking.h"
  32 #include "vikmapslayer.h"
  33 #include "viktrwlayer_tpwin.h"
  34 #include "viktrwlayer_propwin.h"
  35 #include "garminsymbols.h"
  36 #include "thumbnails.h"
  37 #include "background.h"
  38 #include "gpx.h"
  39 #include "babel.h"
  40 #include "dem.h"
  41 #include "dems.h"
  42 #include "geonamessearch.h"
  43 #ifdef VIK_CONFIG_OPENSTREETMAP
  44 #include "osm-traces.h"
  45 #endif
  46 #include "acquire.h"
  47 #include "util.h"
  48
  49 #include "icons/icons.h"
  50
  51 #ifdef HAVE_MATH_H
  52 #include <math.h>
  53 #endif
  54 #ifdef HAVE_STRING_H
  55 #include <string.h>
  56 #endif
  57 #ifdef HAVE_STDLIB_H
  58 #include <stdlib.h>
  59 #endif
  60 #include <stdio.h>
  61 #include <ctype.h>
  62
  63 #include <gdk/gdkkeysyms.h>
  64 #include <glib.h>
  65 #include <glib/gstdio.h>
  66 #include <glib/gi18n.h>
  67
  68 /* Relax some dependencies */
  69 #if ! GLIB_CHECK_VERSION(2,12,0)
  70 static gboolean return_true (gpointer a, gpointer b, gpointer c) { return TRUE; }
  71 static g_hash_table_remove_all (GHashTable *ght) { g_hash_table_foreach_remove ( ght, (GHRFunc) return_true, FALSE ); }
  72 #endif
  73
  74 #define GOOGLE_DIRECTIONS_STRING "maps.google.com/maps?q=from:%s,%s+to:%s,%s&output=kml"
  75 #define VIK_TRW_LAYER_TRACK_GC 13
  76 #define VIK_TRW_LAYER_TRACK_GC_RATES 10
  77 #define VIK_TRW_LAYER_TRACK_GC_MIN 0
  78 #define VIK_TRW_LAYER_TRACK_GC_MAX 11
  79 #define VIK_TRW_LAYER_TRACK_GC_BLACK 12
  80
  81 #define DRAWMODE_BY_TRACK 0
  82 #define DRAWMODE_BY_VELOCITY 1
  83 #define DRAWMODE_ALL_BLACK 2
  84
  85 #define POINTS 1
  86 #define LINES 2
  87
  88 /* this is how it knows when you click if you are clicking close to a trackpoint. */
  89 #define TRACKPOINT_SIZE_APPROX 5
  90 #define WAYPOINT_SIZE_APPROX 5
  91
  92 #define MIN_STOP_LENGTH 15
  93 #define MAX_STOP_LENGTH 86400
  94 #define DRAW_ELEVATION_FACTOR 30 /* height of elevation plotting, sort of relative to zoom level ("mpp" that isn't mpp necessarily) */
  95                                  /* this is multiplied by user-inputted value from 1-100. */
  96 enum {
  97 VIK_TRW_LAYER_SUBLAYER_TRACKS,
  98 VIK_TRW_LAYER_SUBLAYER_WAYPOINTS,
  99 VIK_TRW_LAYER_SUBLAYER_TRACK,
 100 VIK_TRW_LAYER_SUBLAYER_WAYPOINT
 101 };
 102
 103 enum { WP_SYMBOL_FILLED_SQUARE, WP_SYMBOL_SQUARE, WP_SYMBOL_CIRCLE, WP_SYMBOL_X, WP_NUM_SYMBOLS };
 104
 105 struct _VikTrwLayer {
 106   VikLayer vl;
 107   GHashTable *tracks;
 108   GHashTable *tracks_iters;
 109   GHashTable *waypoints_iters;
 110   GHashTable *waypoints;
 111   GtkTreeIter waypoints_iter, tracks_iter;
 112   gboolean tracks_visible, waypoints_visible;
 113   guint8 drawmode;
 114   guint8 drawpoints;
 115   guint8 drawelevation;
 116   guint8 elevation_factor;
 117   guint8 drawstops;
 118   guint32 stop_length;
 119   guint8 drawlines;
 120   guint8 line_thickness;
 121   guint8 bg_line_thickness;
 122
 123   guint8 wp_symbol;
 124   guint8 wp_size;
 125   gboolean wp_draw_symbols;
 126
 127   gdouble velocity_min, velocity_max;
 128   GArray *track_gc;
 129   guint16 track_gc_iter;
 130   GdkGC *current_track_gc;
 131   GdkGC *track_bg_gc;
 132   GdkGC *waypoint_gc;
 133   GdkGC *waypoint_text_gc;
 134   GdkGC *waypoint_bg_gc;
 135   GdkFont *waypoint_font;
 136   VikTrack *current_track;
 137   guint16 ct_x1, ct_y1, ct_x2, ct_y2;
 138   gboolean ct_sync_done;
 139
 140
 141   VikCoordMode coord_mode;
 142
 143   /* wp editing tool */
 144   VikWaypoint *current_wp;
 145   gchar *current_wp_name;
 146   gboolean moving_wp;
 147   gboolean waypoint_rightclick;
 148
 149   /* track editing tool */
 150   GList *current_tpl;
 151   gchar *current_tp_track_name;
 152   VikTrwLayerTpwin *tpwin;
 153
 154   /* weird hack for joining tracks */
 155   GList *last_tpl;
 156   gchar *last_tp_track_name;
 157
 158   /* track editing tool -- more specifically, moving tps */
 159   gboolean moving_tp;
 160
 161   /* magic scissors tool */
 162   gboolean magic_scissors_started;
 163   VikCoord magic_scissors_coord;
 164   gboolean magic_scissors_check_added_track;
 165   gchar *magic_scissors_added_track_name;
 166   VikTrack *magic_scissors_current_track;
 167   gboolean magic_scissors_append;
 168
 169   gboolean drawlabels;
 170   gboolean drawimages;
 171   guint8 image_alpha;
 172   GQueue *image_cache;
 173   guint8 image_size;
 174   guint16 image_cache_size;
 175
 176   /* for waypoint text */
 177   PangoLayout *wplabellayout;
 178
 179   gboolean has_verified_thumbnails;
 180
 181   GtkMenu *wp_right_click_menu;
 182
 183   /* menu */
 184   VikStdLayerMenuItem menu_selection;
 185
 186   gint highest_wp_number;
 187 };
 188
 189 /* A caached waypoint image. */
 190 typedef struct {
 191   GdkPixbuf *pixbuf;
 192   gchar *image; /* filename */
 193 } CachedPixbuf;
 194
 195 struct DrawingParams {
 196   VikViewport *vp;
 197   VikTrwLayer *vtl;
 198   gdouble xmpp, ympp;
 199   guint16 width, height;
 200   const VikCoord *center;
 201   gint track_gc_iter;
 202   gboolean one_zone, lat_lon;
 203   gdouble ce1, ce2, cn1, cn2;
 204 };
 205
 206 static void vik_trw_layer_set_menu_selection(VikTrwLayer *vtl, guint16);
 207 static guint16 vik_trw_layer_get_menu_selection(VikTrwLayer *vtl);
 208
 209 static void trw_layer_delete_item ( gpointer *pass_along );
 210 static void trw_layer_copy_item_cb( gpointer *pass_along);
 211 static void trw_layer_cut_item_cb( gpointer *pass_along);
 212
 213 static void trw_layer_find_maxmin_waypoints ( const gchar *name, const VikWaypoint *w, struct LatLon maxmin[2] );
 214 static void trw_layer_find_maxmin_tracks ( const gchar *name, GList **t, struct LatLon maxmin[2] );
 215 static void trw_layer_find_maxmin (VikTrwLayer *vtl, struct LatLon maxmin[2]);
 216
 217 static void trw_layer_new_track_gcs ( VikTrwLayer *vtl, VikViewport *vp );
 218 static void trw_layer_free_track_gcs ( VikTrwLayer *vtl );
 219
 220 static gint calculate_velocity ( VikTrwLayer *vtl, VikTrackpoint *tp1, VikTrackpoint *tp2 );
 221 static void trw_layer_draw_track_cb ( const gchar *name, VikTrack *track, struct DrawingParams *dp );
 222 static void trw_layer_draw_waypoint ( const gchar *name, VikWaypoint *wp, struct DrawingParams *dp );
 223
 224 static void goto_coord ( VikLayersPanel *vlp, const VikCoord *coord );
 225 static void trw_layer_goto_track_startpoint ( gpointer pass_along[5] );
 226 static void trw_layer_goto_track_endpoint ( gpointer pass_along[6] );
 227 static void trw_layer_merge_by_timestamp ( gpointer pass_along[6] );
 228 static void trw_layer_split_by_timestamp ( gpointer pass_along[6] );
 229 static void trw_layer_download_map_along_track_cb(gpointer pass_along[6]);
 230 static void trw_layer_centerize ( gpointer layer_and_vlp[2] );
 231 static void trw_layer_export ( gpointer layer_and_vlp[2], guint file_type );
 232 static void trw_layer_goto_wp ( gpointer layer_and_vlp[2] );
 233 static void trw_layer_new_wp ( gpointer lav[2] );
 234 static void trw_layer_new_wikipedia_wp_viewport ( gpointer lav[2] );
 235 static void trw_layer_new_wikipedia_wp_layer ( gpointer lav[2] );
 236 static void trw_layer_merge_with_other ( gpointer pass_along[6] );
 237
 238 /* pop-up items */
 239 static void trw_layer_properties_item ( gpointer pass_along[5] );
 240 static void trw_layer_goto_waypoint ( gpointer pass_along[5] );
 241 static void trw_layer_waypoint_gc_webpage ( gpointer pass_along[5] );
 242
 243 static void trw_layer_realize_waypoint ( gchar *name, VikWaypoint *wp, gpointer pass_along[4] );
 244 static void trw_layer_realize_track ( gchar *name, VikTrack *track, gpointer pass_along[4] );
 245 static void init_drawing_params ( struct DrawingParams *dp, VikViewport *vp );
 246
 247
 248 static void trw_layer_marshall( VikTrwLayer *vtl, guint8 **data, gint *len );
 249 static VikTrwLayer *trw_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
 250
 251 static gboolean trw_layer_set_param ( VikTrwLayer *vtl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation );
 252 static VikLayerParamData trw_layer_get_param ( VikTrwLayer *vtl, guint16 id, gboolean is_file_operation );
 253
 254 static void trw_layer_del_item ( VikTrwLayer *vtl, gint subtype, gpointer sublayer );
 255 static void trw_layer_copy_item ( VikTrwLayer *vtl, gint subtype, gpointer sublayer, guint8 **item, guint *len );
 256 static gboolean trw_layer_paste_item ( VikTrwLayer *vtl, gint subtype, guint8 *item, guint len );
 257 static void trw_layer_free_copied_item ( gint subtype, gpointer item );
 258 static void trw_layer_drag_drop_request ( VikTrwLayer *vtl_src, VikTrwLayer *vtl_dest, GtkTreeIter *src_item_iter, GtkTreePath *dest_path );
 259
 260 static void trw_layer_cancel_last_tp ( VikTrwLayer *vtl );
 261 static void trw_layer_cancel_current_tp ( VikTrwLayer *vtl, gboolean destroy );
 262 static void trw_layer_tpwin_response ( VikTrwLayer *vtl, gint response );
 263 static void trw_layer_tpwin_init ( VikTrwLayer *vtl );
 264
 265 static gpointer tool_edit_trackpoint_create ( VikWindow *vw, VikViewport *vvp);
 266 static gboolean tool_edit_trackpoint_click ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data );
 267 static gboolean tool_edit_trackpoint_move ( VikTrwLayer *vtl, GdkEventMotion *event, gpointer data );
 268 static gboolean tool_edit_trackpoint_release ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data );
 269 static gpointer tool_show_picture_create ( VikWindow *vw, VikViewport *vvp);
 270 static gboolean tool_show_picture_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp );
 271 static gpointer tool_edit_waypoint_create ( VikWindow *vw, VikViewport *vvp);
 272 static gboolean tool_edit_waypoint_click ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data );
 273 static gboolean tool_edit_waypoint_move ( VikTrwLayer *vtl, GdkEventMotion *event, gpointer data );
 274 static gboolean tool_edit_waypoint_release ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data );
 275 static gpointer tool_begin_track_create ( VikWindow *vw, VikViewport *vvp);
 276 static gboolean tool_begin_track_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp );
 277 static gpointer tool_new_track_create ( VikWindow *vw, VikViewport *vvp);
 278 static gboolean tool_new_track_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp );
 279 static VikLayerToolFuncStatus tool_new_track_move ( VikTrwLayer *vtl, GdkEventMotion *event, VikViewport *vvp );
 280 static gboolean tool_new_track_key_press ( VikTrwLayer *vtl, GdkEventKey *event, VikViewport *vvp );
 281 static gpointer tool_new_waypoint_create ( VikWindow *vw, VikViewport *vvp);
 282 static gboolean tool_new_waypoint_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp );
 283 static gpointer tool_magic_scissors_create ( VikWindow *vw, VikViewport *vvp);
 284 static gboolean tool_magic_scissors_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp );
 285
 286
 287 static void cached_pixbuf_free ( CachedPixbuf *cp );
 288 static gint cached_pixbuf_cmp ( CachedPixbuf *cp, const gchar *name );
 289 static void trw_layer_verify_thumbnails ( VikTrwLayer *vtl, GtkWidget *vp );
 290
 291 static VikTrackpoint *closest_tp_in_five_pixel_interval ( VikTrwLayer *vtl, VikViewport *vvp, gint x, gint y );
 292 static VikWaypoint *closest_wp_in_five_pixel_interval ( VikTrwLayer *vtl, VikViewport *vvp, gint x, gint y );
 293
 294 static void trw_layer_change_coord_mode ( VikTrwLayer *vtl, VikCoordMode dest_mode );
 295
 296 static gchar *get_new_unique_sublayer_name (VikTrwLayer *vtl, gint sublayer_type, const gchar *name);
 297 static void waypoint_convert ( const gchar *name, VikWaypoint *wp, VikCoordMode *dest_mode );
 298 static void track_convert ( const gchar *name, VikTrack *tr, VikCoordMode *dest_mode );
 299
 300 static gchar *highest_wp_number_get(VikTrwLayer *vtl);
 301 static void highest_wp_number_reset(VikTrwLayer *vtl);
 302 static void highest_wp_number_add_wp(VikTrwLayer *vtl, const gchar *new_wp_name);
 303 static void highest_wp_number_remove_wp(VikTrwLayer *vtl, const gchar *old_wp_name);
 304
 305
 306 static VikToolInterface trw_layer_tools[] = {
 307   { N_("Create Waypoint"), (VikToolConstructorFunc) tool_new_waypoint_create,    NULL, NULL, NULL,
 308     (VikToolMouseFunc) tool_new_waypoint_click,    NULL, NULL, (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_addwp_pixbuf },
 309
 310   { N_("Create Track"),    (VikToolConstructorFunc) tool_new_track_create,       NULL, NULL, NULL,
 311     (VikToolMouseFunc) tool_new_track_click, (VikToolMouseMoveFunc) tool_new_track_move, NULL,
 312     (VikToolKeyFunc) tool_new_track_key_press, GDK_CURSOR_IS_PIXMAP, &cursor_addtr_pixbuf },
 313
 314   { N_("Begin Track"),    (VikToolConstructorFunc) tool_begin_track_create,       NULL, NULL, NULL,
 315     (VikToolMouseFunc) tool_begin_track_click,       NULL, NULL, (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_begintr_pixbuf },
 316
 317   { N_("Edit Waypoint"),   (VikToolConstructorFunc) tool_edit_waypoint_create,   NULL, NULL, NULL,
 318     (VikToolMouseFunc) tool_edit_waypoint_click,
 319     (VikToolMouseMoveFunc) tool_edit_waypoint_move,
 320     (VikToolMouseFunc) tool_edit_waypoint_release, (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_edwp_pixbuf },
 321
 322   { N_("Edit Trackpoint"), (VikToolConstructorFunc) tool_edit_trackpoint_create, NULL, NULL, NULL,
 323     (VikToolMouseFunc) tool_edit_trackpoint_click,
 324     (VikToolMouseMoveFunc) tool_edit_trackpoint_move,
 325     (VikToolMouseFunc) tool_edit_trackpoint_release, (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_edtr_pixbuf },
 326
 327   { N_("Show Picture"),    (VikToolConstructorFunc) tool_show_picture_create,    NULL, NULL, NULL,
 328     (VikToolMouseFunc) tool_show_picture_click,    NULL, NULL, (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_showpic_pixbuf },
 329
 330   { N_("Magic Scissors"),  (VikToolConstructorFunc) tool_magic_scissors_create,  NULL, NULL, NULL,
 331     (VikToolMouseFunc) tool_magic_scissors_click, NULL, NULL, (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_iscissors_pixbuf },
 332 };
 333 enum { TOOL_CREATE_WAYPOINT=0, TOOL_CREATE_TRACK, TOOL_BEGIN_TRACK, TOOL_EDIT_WAYPOINT, TOOL_EDIT_TRACKPOINT, TOOL_SHOW_PICTURE, NUM_TOOLS };
 334
 335 /****** PARAMETERS ******/
 336
 337 static gchar *params_groups[] = { N_("Waypoints"), N_("Tracks"), N_("Waypoint Images") };
 338 enum { GROUP_WAYPOINTS, GROUP_TRACKS, GROUP_IMAGES };
 339
 340 static gchar *params_drawmodes[] = { N_("Draw by Track"), N_("Draw by Velocity"), N_("All Tracks Black"), 0 };
 341 static gchar *params_wpsymbols[] = { N_("Filled Square"), N_("Square"), N_("Circle"), N_("X"), 0 };
 342
 343
 344 static VikLayerParamScale params_scales[] = {
 345  /* min  max    step digits */
 346  {  1,   10,    1,   0 }, /* line_thickness */
 347  {  0.0, 99.0,  1,   2 }, /* velocity_min */
 348  {  1.0, 100.0, 1.0, 2 }, /* velocity_max */
 349                 /* 5 * step == how much to turn */
 350  {  16,   128,  3.2, 0 }, /* image_size */
 351  {   0,   255,  5,   0 }, /* image alpha */
 352  {   5,   500,  5,   0 }, /* image cache_size */
 353  {   0,   8,    1,   0 }, /* image cache_size */
 354  {   1,  64,    1,   0 }, /* wpsize */
 355  {   MIN_STOP_LENGTH, MAX_STOP_LENGTH, 1,   0 }, /* stop_length */
 356  {   1, 100, 1,   0 }, /* stop_length */
 357 };
 358
 359 VikLayerParam trw_layer_params[] = {
 360   { "tracks_visible", VIK_LAYER_PARAM_BOOLEAN, VIK_LAYER_NOT_IN_PROPERTIES },
 361   { "waypoints_visible", VIK_LAYER_PARAM_BOOLEAN, VIK_LAYER_NOT_IN_PROPERTIES },
 362
 363   { "drawmode", VIK_LAYER_PARAM_UINT, GROUP_TRACKS, N_("Track Drawing Mode:"), VIK_LAYER_WIDGET_RADIOGROUP, NULL },
 364   { "drawlines", VIK_LAYER_PARAM_BOOLEAN, GROUP_TRACKS, N_("Draw Track Lines"), VIK_LAYER_WIDGET_CHECKBUTTON },
 365   { "drawpoints", VIK_LAYER_PARAM_BOOLEAN, GROUP_TRACKS, N_("Draw Trackpoints"), VIK_LAYER_WIDGET_CHECKBUTTON },
 366   { "drawelevation", VIK_LAYER_PARAM_BOOLEAN, GROUP_TRACKS, N_("Draw Elevation"), VIK_LAYER_WIDGET_CHECKBUTTON },
 367   { "elevation_factor", VIK_LAYER_PARAM_UINT, GROUP_TRACKS, N_("Draw Elevation Height %:"), VIK_LAYER_WIDGET_HSCALE, params_scales + 9 },
 368
 369   { "drawstops", VIK_LAYER_PARAM_BOOLEAN, GROUP_TRACKS, N_("Draw Stops"), VIK_LAYER_WIDGET_CHECKBUTTON },
 370   { "stop_length", VIK_LAYER_PARAM_UINT, GROUP_TRACKS, N_("Min Stop Length (seconds):"), VIK_LAYER_WIDGET_SPINBUTTON, params_scales + 8 },
 371
 372   { "line_thickness", VIK_LAYER_PARAM_UINT, GROUP_TRACKS, N_("Track Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, params_scales + 0 },
 373   { "bg_line_thickness", VIK_LAYER_PARAM_UINT, GROUP_TRACKS, N_("Track BG Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, params_scales + 6 },
 374   { "trackbgcolor", VIK_LAYER_PARAM_COLOR, GROUP_TRACKS, N_("Track Background Color"), VIK_LAYER_WIDGET_COLOR, 0 },
 375   { "velocity_min", VIK_LAYER_PARAM_DOUBLE, GROUP_TRACKS, N_("Min Track Velocity:"), VIK_LAYER_WIDGET_SPINBUTTON, params_scales + 1 },
 376   { "velocity_max", VIK_LAYER_PARAM_DOUBLE, GROUP_TRACKS, N_("Max Track Velocity:"), VIK_LAYER_WIDGET_SPINBUTTON, params_scales + 2 },
 377
 378   { "drawlabels", VIK_LAYER_PARAM_BOOLEAN, GROUP_WAYPOINTS, N_("Draw Labels"), VIK_LAYER_WIDGET_CHECKBUTTON },
 379   { "wpcolor", VIK_LAYER_PARAM_COLOR, GROUP_WAYPOINTS, N_("Waypoint Color:"), VIK_LAYER_WIDGET_COLOR, 0 },
 380   { "wptextcolor", VIK_LAYER_PARAM_COLOR, GROUP_WAYPOINTS, N_("Waypoint Text:"), VIK_LAYER_WIDGET_COLOR, 0 },
 381   { "wpbgcolor", VIK_LAYER_PARAM_COLOR, GROUP_WAYPOINTS, N_("Background:"), VIK_LAYER_WIDGET_COLOR, 0 },
 382   { "wpbgand", VIK_LAYER_PARAM_BOOLEAN, GROUP_WAYPOINTS, N_("Fake BG Color Translucency:"), VIK_LAYER_WIDGET_CHECKBUTTON, 0 },
 383   { "wpsymbol", VIK_LAYER_PARAM_UINT, GROUP_WAYPOINTS, N_("Waypoint marker:"), VIK_LAYER_WIDGET_RADIOGROUP, NULL },
 384   { "wpsize", VIK_LAYER_PARAM_UINT, GROUP_WAYPOINTS, N_("Waypoint size:"), VIK_LAYER_WIDGET_SPINBUTTON, params_scales + 7 },
 385   { "wpsyms", VIK_LAYER_PARAM_BOOLEAN, GROUP_WAYPOINTS, N_("Draw Waypoint Symbols:"), VIK_LAYER_WIDGET_CHECKBUTTON },
 386
 387   { "drawimages", VIK_LAYER_PARAM_BOOLEAN, GROUP_IMAGES, N_("Draw Waypoint Images"), VIK_LAYER_WIDGET_CHECKBUTTON },
 388   { "image_size", VIK_LAYER_PARAM_UINT, GROUP_IMAGES, N_("Image Size (pixels):"), VIK_LAYER_WIDGET_HSCALE, params_scales + 3 },
 389   { "image_alpha", VIK_LAYER_PARAM_UINT, GROUP_IMAGES, N_("Image Alpha:"), VIK_LAYER_WIDGET_HSCALE, params_scales + 4 },
 390   { "image_cache_size", VIK_LAYER_PARAM_UINT, GROUP_IMAGES, N_("Image Memory Cache Size:"), VIK_LAYER_WIDGET_HSCALE, params_scales + 5 },
 391 };
 392
 393 enum { PARAM_TV, PARAM_WV, PARAM_DM, PARAM_DL, PARAM_DP, PARAM_DE, PARAM_EF, PARAM_DS, PARAM_SL, PARAM_LT, PARAM_BLT, PARAM_TBGC, PARAM_VMIN, PARAM_VMAX, PARAM_DLA, PARAM_WPC, PARAM_WPTC, PARAM_WPBC, PARAM_WPBA, PARAM_WPSYM, PARAM_WPSIZE, PARAM_WPSYMS, PARAM_DI, PARAM_IS, PARAM_IA, PARAM_ICS, NUM_PARAMS };
 394
 395 /*** TO ADD A PARAM:
 396  *** 1) Add to trw_layer_params and enumeration
 397  *** 2) Handle in get_param & set_param (presumably adding on to VikTrwLayer struct)
 398  ***/
 399
 400 /****** END PARAMETERS ******/
 401
 402 VikLayerInterface vik_trw_layer_interface = {
 403   "TrackWaypoint",
 404   &viktrwlayer_pixbuf,
 405
 406   trw_layer_tools,
 407   sizeof(trw_layer_tools) / sizeof(VikToolInterface),
 408
 409   trw_layer_params,
 410   NUM_PARAMS,
 411   params_groups, /* params_groups */
 412   sizeof(params_groups)/sizeof(params_groups[0]),    /* number of groups */
 413
 414   VIK_MENU_ITEM_ALL,
 415
 416   (VikLayerFuncCreate)                  vik_trw_layer_create,
 417   (VikLayerFuncRealize)                 vik_trw_layer_realize,
 418   (VikLayerFuncPostRead)                trw_layer_verify_thumbnails,
 419   (VikLayerFuncFree)                    vik_trw_layer_free,
 420
 421   (VikLayerFuncProperties)              NULL,
 422   (VikLayerFuncDraw)                    vik_trw_layer_draw,
 423   (VikLayerFuncChangeCoordMode)         trw_layer_change_coord_mode,
 424
 425   (VikLayerFuncSetMenuItemsSelection)   vik_trw_layer_set_menu_selection,
 426   (VikLayerFuncGetMenuItemsSelection)   vik_trw_layer_get_menu_selection,
 427
 428   (VikLayerFuncAddMenuItems)            vik_trw_layer_add_menu_items,
 429   (VikLayerFuncSublayerAddMenuItems)    vik_trw_layer_sublayer_add_menu_items,
 430
 431   (VikLayerFuncSublayerRenameRequest)   vik_trw_layer_sublayer_rename_request,
 432   (VikLayerFuncSublayerToggleVisible)   vik_trw_layer_sublayer_toggle_visible,
 433
 434   (VikLayerFuncMarshall)                trw_layer_marshall,
 435   (VikLayerFuncUnmarshall)              trw_layer_unmarshall,
 436
 437   (VikLayerFuncSetParam)                trw_layer_set_param,
 438   (VikLayerFuncGetParam)                trw_layer_get_param,
 439
 440   (VikLayerFuncReadFileData)            a_gpspoint_read_file,
 441   (VikLayerFuncWriteFileData)           a_gpspoint_write_file,
 442
 443   (VikLayerFuncDeleteItem)              trw_layer_del_item,
 444   (VikLayerFuncCopyItem)                trw_layer_copy_item,
 445   (VikLayerFuncPasteItem)               trw_layer_paste_item,
 446   (VikLayerFuncFreeCopiedItem)          trw_layer_free_copied_item,
 447
 448   (VikLayerFuncDragDropRequest)         trw_layer_drag_drop_request,
 449 };
 450
 451 /* for copy & paste (I think?) */
 452 typedef struct {
 453   guint len;
 454   guint8 data[0];
 455   //  gchar *name;
 456   //  VikWaypoint *wp;
 457 } FlatItem;
 458
 459 GType vik_trw_layer_get_type ()
 460 {
 461   static GType vtl_type = 0;
 462
 463   if (!vtl_type)
 464   {
 465     static const GTypeInfo vtl_info =
 466     {
 467       sizeof (VikTrwLayerClass),
 468       NULL, /* base_init */
 469       NULL, /* base_finalize */
 470       NULL, /* class init */
 471       NULL, /* class_finalize */
 472       NULL, /* class_data */
 473       sizeof (VikTrwLayer),
 474       0,
 475       NULL /* instance init */
 476     };
 477     vtl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikTrwLayer", &vtl_info, 0 );
 478   }
 479
 480   return vtl_type;
 481 }
 482
 483 static void trw_layer_del_item ( VikTrwLayer *vtl, gint subtype, gpointer sublayer )
 484 {
 485   static gpointer pass_along[5];
 486   if (!sublayer) {
 487     return;
 488   }
 489
 490   pass_along[0] = vtl;
 491   pass_along[1] = NULL;
 492   pass_along[2] = GINT_TO_POINTER (subtype);
 493   pass_along[3] = sublayer;
 494   pass_along[4] = NULL;
 495
 496   trw_layer_delete_item ( pass_along );
 497 }
 498
 499 static void trw_layer_copy_item_cb( gpointer pass_along[5])
 500 {
 501   VikTrwLayer *vtl = VIK_TRW_LAYER(pass_along[0]);
 502   gint subtype = GPOINTER_TO_INT (pass_along[2]);
 503   gpointer * sublayer = pass_along[3];
 504   guint8 *data = NULL;
 505   guint len;
 506
 507   trw_layer_copy_item( vtl, subtype, sublayer, &data, &len);
 508
 509   if (data) {
 510     a_clipboard_copy( VIK_CLIPBOARD_DATA_SUBLAYER, VIK_LAYER_TRW,
 511         subtype, len, data);
 512   }
 513 }
 514
 515 static void trw_layer_cut_item_cb( gpointer pass_along[5])
 516 {
 517   trw_layer_copy_item_cb(pass_along);
 518   trw_layer_delete_item(pass_along);
 519 }
 520
 521 static void trw_layer_copy_item ( VikTrwLayer *vtl, gint subtype, gpointer sublayer, guint8 **item, guint *len )
 522 {
 523   FlatItem *fi;
 524   guint8 *id;
 525   guint il;
 526
 527   if (!sublayer) {
 528     *item = NULL;
 529     return;
 530   }
 531
 532   if ( subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINT )
 533   {
 534     vik_waypoint_marshall ( g_hash_table_lookup ( vtl->waypoints, sublayer ), &id, &il );
 535   } else {
 536     vik_track_marshall ( g_hash_table_lookup ( vtl->tracks, sublayer ), &id, &il );
 537   }
 538
 539   *len = sizeof(FlatItem) + strlen(sublayer) + 1 + il;
 540   fi = g_malloc ( *len );
 541   fi->len = strlen(sublayer) + 1;
 542   memcpy(fi->data, sublayer, fi->len);
 543   memcpy(fi->data + fi->len, id, il);
 544   g_free(id);
 545   *item = (guint8 *)fi;
 546 }
 547
 548 static gboolean trw_layer_paste_item ( VikTrwLayer *vtl, gint subtype, guint8 *item, guint len )
 549 {
 550   FlatItem *fi = (FlatItem *) item;
 551
 552   if ( subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINT && fi )
 553   {
 554     VikWaypoint *w;
 555     gchar *name;
 556
 557     name = get_new_unique_sublayer_name(vtl, VIK_TRW_LAYER_SUBLAYER_WAYPOINT, (gchar *)fi->data);
 558     w = vik_waypoint_unmarshall(fi->data + fi->len, len - sizeof(*fi) - fi->len);
 559     vik_trw_layer_add_waypoint ( vtl, name, w );
 560     waypoint_convert(name, w, &vtl->coord_mode);
 561     return TRUE;
 562   }
 563   if ( subtype == VIK_TRW_LAYER_SUBLAYER_TRACK && fi )
 564   {
 565     VikTrack *t;
 566     gchar *name;
 567     name = get_new_unique_sublayer_name(vtl, VIK_TRW_LAYER_SUBLAYER_TRACK, (gchar *)fi->data);
 568     t = vik_track_unmarshall(fi->data + fi->len, len - sizeof(*fi) - fi->len);
 569     vik_trw_layer_add_track ( vtl, name, t );
 570     track_convert(name, t, &vtl->coord_mode);
 571     return TRUE;
 572   }
 573   return FALSE;
 574 }
 575
 576 static void trw_layer_free_copied_item ( gint subtype, gpointer item )
 577 {
 578   if (item) {
 579     g_free(item);
 580   }
 581 }
 582
 583 static gboolean trw_layer_set_param ( VikTrwLayer *vtl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation )
 584 {
 585   switch ( id )
 586   {
 587     case PARAM_TV: vtl->tracks_visible = data.b; break;
 588     case PARAM_WV: vtl->waypoints_visible = data.b; break;
 589     case PARAM_DM: vtl->drawmode = data.u; break;
 590     case PARAM_DP: vtl->drawpoints = data.b; break;
 591     case PARAM_DE: vtl->drawelevation = data.b; break;
 592     case PARAM_DS: vtl->drawstops = data.b; break;
 593     case PARAM_DL: vtl->drawlines = data.b; break;
 594     case PARAM_SL: if ( data.u >= MIN_STOP_LENGTH && data.u <= MAX_STOP_LENGTH )
 595                      vtl->stop_length = data.u;
 596                    break;
 597     case PARAM_EF: if ( data.u >= 1 && data.u <= 100 )
 598                      vtl->elevation_factor = data.u;
 599                    break;
 600     case PARAM_LT: if ( data.u > 0 && data.u < 15 && data.u != vtl->line_thickness )
 601                    {
 602                      vtl->line_thickness = data.u;
 603                      trw_layer_new_track_gcs ( vtl, vp );
 604                    }
 605                    break;
 606     case PARAM_BLT: if ( data.u >= 0 && data.u <= 8 && data.u != vtl->bg_line_thickness )
 607                    {
 608                      vtl->bg_line_thickness = data.u;
 609                      trw_layer_new_track_gcs ( vtl, vp );
 610                    }
 611                    break;
 612     case PARAM_VMIN: vtl->velocity_min = data.d; break;
 613     case PARAM_VMAX: vtl->velocity_max = data.d; break;
 614     case PARAM_TBGC: gdk_gc_set_rgb_fg_color(vtl->track_bg_gc, &(data.c)); break;
 615     case PARAM_DLA: vtl->drawlabels = data.b; break;
 616     case PARAM_DI: vtl->drawimages = data.b; break;
 617     case PARAM_IS: if ( data.u != vtl->image_size )
 618       {
 619         vtl->image_size = data.u;
 620         g_list_foreach ( vtl->image_cache->head, (GFunc) cached_pixbuf_free, NULL );
 621         g_queue_free ( vtl->image_cache );
 622         vtl->image_cache = g_queue_new ();
 623       }
 624       break;
 625     case PARAM_IA: vtl->image_alpha = data.u; break;
 626     case PARAM_ICS: vtl->image_cache_size = data.u;
 627       while ( vtl->image_cache->length > vtl->image_cache_size ) /* if shrinking cache_size, free pixbuf ASAP */
 628           cached_pixbuf_free ( g_queue_pop_tail ( vtl->image_cache ) );
 629       break;
 630     case PARAM_WPC: gdk_gc_set_rgb_fg_color(vtl->waypoint_gc, &(data.c)); break;
 631     case PARAM_WPTC: gdk_gc_set_rgb_fg_color(vtl->waypoint_text_gc, &(data.c)); break;
 632     case PARAM_WPBC: gdk_gc_set_rgb_fg_color(vtl->waypoint_bg_gc, &(data.c)); break;
 633     case PARAM_WPBA: gdk_gc_set_function(vtl->waypoint_bg_gc, data.b ? GDK_AND : GDK_COPY ); break;
 634     case PARAM_WPSYM: if ( data.u < WP_NUM_SYMBOLS ) vtl->wp_symbol = data.u; break;
 635     case PARAM_WPSIZE: if ( data.u > 0 && data.u <= 64 ) vtl->wp_size = data.u; break;
 636     case PARAM_WPSYMS: vtl->wp_draw_symbols = data.b; break;
 637   }
 638   return TRUE;
 639 }
 640
 641 static VikLayerParamData trw_layer_get_param ( VikTrwLayer *vtl, guint16 id, gboolean is_file_operation )
 642 {
 643   VikLayerParamData rv;
 644   switch ( id )
 645   {
 646     case PARAM_TV: rv.b = vtl->tracks_visible; break;
 647     case PARAM_WV: rv.b = vtl->waypoints_visible; break;
 648     case PARAM_DM: rv.u = vtl->drawmode; break;
 649     case PARAM_DP: rv.b = vtl->drawpoints; break;
 650     case PARAM_DE: rv.b = vtl->drawelevation; break;
 651     case PARAM_EF: rv.u = vtl->elevation_factor; break;
 652     case PARAM_DS: rv.b = vtl->drawstops; break;
 653     case PARAM_SL: rv.u = vtl->stop_length; break;
 654     case PARAM_DL: rv.b = vtl->drawlines; break;
 655     case PARAM_LT: rv.u = vtl->line_thickness; break;
 656     case PARAM_BLT: rv.u = vtl->bg_line_thickness; break;
 657     case PARAM_VMIN: rv.d = vtl->velocity_min; break;
 658     case PARAM_VMAX: rv.d = vtl->velocity_max; break;
 659     case PARAM_DLA: rv.b = vtl->drawlabels; break;
 660     case PARAM_DI: rv.b = vtl->drawimages; break;
 661     case PARAM_TBGC: vik_gc_get_fg_color(vtl->track_bg_gc, &(rv.c)); break;
 662     case PARAM_IS: rv.u = vtl->image_size; break;
 663     case PARAM_IA: rv.u = vtl->image_alpha; break;
 664     case PARAM_ICS: rv.u = vtl->image_cache_size; break;
 665     case PARAM_WPC: vik_gc_get_fg_color(vtl->waypoint_gc, &(rv.c)); break;
 666     case PARAM_WPTC: vik_gc_get_fg_color(vtl->waypoint_text_gc, &(rv.c)); break;
 667     case PARAM_WPBC: vik_gc_get_fg_color(vtl->waypoint_bg_gc, &(rv.c)); break;
 668     case PARAM_WPBA: rv.b = (vik_gc_get_function(vtl->waypoint_bg_gc)==GDK_AND); break;
 669     case PARAM_WPSYM: rv.u = vtl->wp_symbol; break;
 670     case PARAM_WPSIZE: rv.u = vtl->wp_size; break;
 671     case PARAM_WPSYMS: rv.b = vtl->wp_draw_symbols; break;
 672   }
 673   return rv;
 674 }
 675
 676 static void trw_layer_marshall( VikTrwLayer *vtl, guint8 **data, gint *len )
 677 {
 678   guint8 *pd;
 679   gchar *dd;
 680   gsize dl;
 681   gint pl;
 682   gchar *tmpname;
 683   FILE *f;
 684
 685   *data = NULL;
 686
 687   if ((f = fdopen(g_file_open_tmp (NULL, &tmpname, NULL), "r+"))) {
 688     a_gpx_write_file(vtl, f);
 689     vik_layer_marshall_params(VIK_LAYER(vtl), &pd, &pl);
 690     fclose(f);
 691     f = NULL;
 692     g_file_get_contents(tmpname, &dd, &dl, NULL);
 693     *len = sizeof(pl) + pl + dl;
 694     *data = g_malloc(*len);
 695     memcpy(*data, &pl, sizeof(pl));
 696     memcpy(*data + sizeof(pl), pd, pl);
 697     memcpy(*data + sizeof(pl) + pl, dd, dl);
 698
 699     g_free(pd);
 700     g_free(dd);
 701     g_remove(tmpname);
 702     g_free(tmpname);
 703   }
 704 }
 705
 706 static VikTrwLayer *trw_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
 707 {
 708   VikTrwLayer *rv = VIK_TRW_LAYER(vik_layer_create ( VIK_LAYER_TRW, vvp, NULL, FALSE ));
 709   gint pl;
 710   gchar *tmpname;
 711   FILE *f;
 712
 713
 714   memcpy(&pl, data, sizeof(pl));
 715   data += sizeof(pl);
 716   vik_layer_unmarshall_params ( VIK_LAYER(rv), data, pl, vvp );
 717   data += pl;
 718
 719   if (!(f = fdopen(g_file_open_tmp (NULL, &tmpname, NULL), "r+"))) {
 720     g_critical("couldn't open temp file");
 721     exit(1);
 722   }
 723   fwrite(data, len - pl - sizeof(pl), 1, f);
 724   rewind(f);
 725   a_gpx_read_file(rv, f);
 726   fclose(f);
 727   f = NULL;
 728   g_remove(tmpname);
 729   g_free(tmpname);
 730   return rv;
 731 }
 732
 733 static GList * str_array_to_glist(gchar* data[])
 734 {
 735   GList *gl = NULL;
 736   gpointer * p;
 737   for (p = (gpointer)data; *p; p++)
 738     gl = g_list_prepend(gl, *p);
 739   return(g_list_reverse(gl));
 740 }
 741
 742 static gboolean strcase_equal(gconstpointer s1, gconstpointer s2)
 743 {
 744   return (strcasecmp(s1, s2) == 0);
 745 }
 746
 747 static guint strcase_hash(gconstpointer v)
 748 {
 749   /* 31 bit hash function */
 750   int i;
 751   const gchar *t = v;
 752   gchar s[128];   /* malloc is too slow for reading big files */
 753   gchar *p = s;
 754
 755   for (i = 0; (i < (sizeof(s)- 1)) && t[i]; i++)
 756       p[i] = toupper(t[i]);
 757   p[i] = '\0';
 758
 759   p = s;
 760   guint32 h = *p;
 761   if (h) {
 762     for (p += 1; *p != '\0'; p++)
 763       h = (h << 5) - h + *p;
 764   }
 765
 766   return h;
 767 }
 768
 769 VikTrwLayer *vik_trw_layer_new ( gint drawmode )
 770 {
 771   if (trw_layer_params[PARAM_DM].widget_data == NULL)
 772     trw_layer_params[PARAM_DM].widget_data = str_array_to_glist(params_drawmodes);
 773   if (trw_layer_params[PARAM_WPSYM].widget_data == NULL)
 774     trw_layer_params[PARAM_WPSYM].widget_data = str_array_to_glist(params_wpsymbols);
 775
 776   VikTrwLayer *rv = VIK_TRW_LAYER ( g_object_new ( VIK_TRW_LAYER_TYPE, NULL ) );
 777   vik_layer_init ( VIK_LAYER(rv), VIK_LAYER_TRW );
 778
 779   rv->waypoints = g_hash_table_new_full ( strcase_hash, strcase_equal, g_free, (GDestroyNotify) vik_waypoint_free );
 780   rv->tracks = g_hash_table_new_full ( g_str_hash, g_str_equal, g_free, (GDestroyNotify) vik_track_free );
 781   rv->tracks_iters = g_hash_table_new_full ( g_str_hash, g_str_equal, NULL, g_free );
 782   rv->waypoints_iters = g_hash_table_new_full ( strcase_hash, strcase_equal, NULL, g_free );
 783
 784   /* TODO: constants at top */
 785   rv->waypoints_visible = rv->tracks_visible = TRUE;
 786   rv->drawmode = drawmode;
 787   rv->drawpoints = TRUE;
 788   rv->drawstops = FALSE;
 789   rv->drawelevation = FALSE;
 790   rv->elevation_factor = 30;
 791   rv->stop_length = 60;
 792   rv->drawlines = TRUE;
 793   rv->wplabellayout = NULL;
 794   rv->wp_right_click_menu = NULL;
 795   rv->waypoint_gc = NULL;
 796   rv->waypoint_text_gc = NULL;
 797   rv->waypoint_bg_gc = NULL;
 798   rv->track_gc = NULL;
 799   rv->velocity_max = 5.0;
 800   rv->velocity_min = 0.0;
 801   rv->line_thickness = 1;
 802   rv->bg_line_thickness = 0;
 803   rv->current_wp = NULL;
 804   rv->current_wp_name = NULL;
 805   rv->current_track = NULL;
 806   rv->current_tpl = NULL;
 807   rv->current_tp_track_name = NULL;
 808   rv->moving_tp = FALSE;
 809   rv->moving_wp = FALSE;
 810
 811   rv->ct_sync_done = TRUE;
 812
 813   rv->magic_scissors_started = FALSE;
 814   rv->magic_scissors_check_added_track = FALSE;
 815   rv->magic_scissors_added_track_name = NULL;
 816   rv->magic_scissors_current_track = NULL;
 817   rv->magic_scissors_append = FALSE;
 818
 819   rv->waypoint_rightclick = FALSE;
 820   rv->last_tpl = NULL;
 821   rv->last_tp_track_name = NULL;
 822   rv->tpwin = NULL;
 823   rv->image_cache = g_queue_new();
 824   rv->image_size = 64;
 825   rv->image_alpha = 255;
 826   rv->image_cache_size = 300;
 827   rv->drawimages = TRUE;
 828   rv->drawlabels = TRUE;
 829   return rv;
 830 }
 831
 832
 833 void vik_trw_layer_free ( VikTrwLayer *trwlayer )
 834 {
 835   g_hash_table_destroy(trwlayer->waypoints);
 836   g_hash_table_destroy(trwlayer->tracks);
 837
 838   /* ODC: replace with GArray */
 839   trw_layer_free_track_gcs ( trwlayer );
 840
 841   if ( trwlayer->wp_right_click_menu )
 842     gtk_object_sink ( GTK_OBJECT(trwlayer->wp_right_click_menu) );
 843
 844   if ( trwlayer->wplabellayout != NULL)
 845     g_object_unref ( G_OBJECT ( trwlayer->wplabellayout ) );
 846
 847   if ( trwlayer->waypoint_gc != NULL )
 848     g_object_unref ( G_OBJECT ( trwlayer->waypoint_gc ) );
 849
 850   if ( trwlayer->waypoint_text_gc != NULL )
 851     g_object_unref ( G_OBJECT ( trwlayer->waypoint_text_gc ) );
 852
 853   if ( trwlayer->waypoint_bg_gc != NULL )
 854     g_object_unref ( G_OBJECT ( trwlayer->waypoint_bg_gc ) );
 855
 856   if ( trwlayer->waypoint_font != NULL )
 857     gdk_font_unref ( trwlayer->waypoint_font );
 858
 859   if ( trwlayer->tpwin != NULL )
 860     gtk_widget_destroy ( GTK_WIDGET(trwlayer->tpwin) );
 861
 862   g_list_foreach ( trwlayer->image_cache->head, (GFunc) cached_pixbuf_free, NULL );
 863   g_queue_free ( trwlayer->image_cache );
 864 }
 865
 866 static void init_drawing_params ( struct DrawingParams *dp, VikViewport *vp )
 867 {
 868   dp->vp = vp;
 869   dp->xmpp = vik_viewport_get_xmpp ( vp );
 870   dp->ympp = vik_viewport_get_ympp ( vp );
 871   dp->width = vik_viewport_get_width ( vp );
 872   dp->height = vik_viewport_get_height ( vp );
 873   dp->center = vik_viewport_get_center ( vp );
 874   dp->one_zone = vik_viewport_is_one_zone ( vp ); /* false if some other projection besides UTM */
 875   dp->lat_lon = vik_viewport_get_coord_mode ( vp ) == VIK_COORD_LATLON;
 876
 877   if ( dp->one_zone )
 878   {
 879     gint w2, h2;
 880     w2 = dp->xmpp * (dp->width / 2) + 1600 / dp->xmpp;
 881     h2 = dp->ympp * (dp->height / 2) + 1600 / dp->ympp;
 882     /* leniency -- for tracks. Obviously for waypoints this SHOULD be a lot smaller */
 883
 884     dp->ce1 = dp->center->east_west-w2;
 885     dp->ce2 = dp->center->east_west+w2;
 886     dp->cn1 = dp->center->north_south-h2;
 887     dp->cn2 = dp->center->north_south+h2;
 888   } else if ( dp->lat_lon ) {
 889     VikCoord upperleft, bottomright;
 890     /* quick & dirty calculation; really want to check all corners due to lat/lon smaller at top in northern hemisphere */
 891     /* this also DOESN'T WORK if you are crossing 180/-180 lon. I don't plan to in the near future...  */
 892     vik_viewport_screen_to_coord ( vp, -500, -500, &upperleft );
 893     vik_viewport_screen_to_coord ( vp, dp->width+500, dp->height+500, &bottomright );
 894     dp->ce1 = upperleft.east_west;
 895     dp->ce2 = bottomright.east_west;
 896     dp->cn1 = bottomright.north_south;
 897     dp->cn2 = upperleft.north_south;
 898   }
 899
 900   dp->track_gc_iter = 0;
 901 }
 902
 903 static gint calculate_velocity ( VikTrwLayer *vtl, VikTrackpoint *tp1, VikTrackpoint *tp2 )
 904 {
 905   static gdouble rv = 0;
 906   if ( tp1->has_timestamp && tp2->has_timestamp )
 907   {
 908     rv = ( vik_coord_diff ( &(tp1->coord), &(tp2->coord) )
 909            / (tp1->timestamp - tp2->timestamp) ) - vtl->velocity_min;
 910
 911     if ( rv < 0 )
 912       return VIK_TRW_LAYER_TRACK_GC_MIN;
 913     else if ( vtl->velocity_min >= vtl->velocity_max )
 914       return VIK_TRW_LAYER_TRACK_GC_MAX;
 915
 916     rv *= (VIK_TRW_LAYER_TRACK_GC_RATES / (vtl->velocity_max - vtl->velocity_min));
 917
 918     if ( rv >= VIK_TRW_LAYER_TRACK_GC_MAX )
 919       return VIK_TRW_LAYER_TRACK_GC_MAX;
 920     return (gint) rv;
 921  }
 922  else
 923    return VIK_TRW_LAYER_TRACK_GC_BLACK;
 924 }
 925
 926 void draw_utm_skip_insignia ( VikViewport *vvp, GdkGC *gc, gint x, gint y )
 927 {
 928   vik_viewport_draw_line ( vvp, gc, x+5, y, x-5, y );
 929   vik_viewport_draw_line ( vvp, gc, x, y+5, x, y-5 );
 930   vik_viewport_draw_line ( vvp, gc, x+5, y+5, x-5, y-5 );
 931   vik_viewport_draw_line ( vvp, gc, x+5, y-5, x-5, y+5 );
 932 }
 933
 934 static void trw_layer_draw_track ( const gchar *name, VikTrack *track, struct DrawingParams *dp, gboolean drawing_white_background )
 935 {
 936   /* TODO: this function is a mess, get rid of any redundancy */
 937   GList *list = track->trackpoints;
 938   GdkGC *main_gc;
 939   gboolean useoldvals = TRUE;
 940
 941   gboolean drawpoints;
 942   gboolean drawstops;
 943   gboolean drawelevation;
 944   gdouble min_alt, max_alt, alt_diff = 0;
 945
 946   const guint8 tp_size_reg = 2;
 947   const guint8 tp_size_cur = 4;
 948   guint8 tp_size;
 949
 950   if ( dp->vtl->drawelevation )
 951   {
 952     /* assume if it has elevation at the beginning, it has it throughout. not ness a true good assumption */
 953     if ( ( drawelevation = vik_track_get_minmax_alt ( track, &min_alt, &max_alt ) ) )
 954       alt_diff = max_alt - min_alt;
 955   }
 956
 957   if ( ! track->visible )
 958     return;
 959
 960   /* admittedly this is not an efficient way to do it because we go through the whole GC thing all over... */
 961   if ( dp->vtl->bg_line_thickness && !drawing_white_background )
 962     trw_layer_draw_track ( name, track, dp, TRUE );
 963
 964   if ( drawing_white_background )
 965     drawpoints = drawstops = FALSE;
 966   else {
 967     drawpoints = dp->vtl->drawpoints;
 968     drawstops = dp->vtl->drawstops;
 969   }
 970
 971   if ( dp->vtl->drawmode == DRAWMODE_ALL_BLACK )
 972     dp->track_gc_iter = VIK_TRW_LAYER_TRACK_GC_BLACK;
 973
 974   if ( track == dp->vtl->current_track )
 975     main_gc = dp->vtl->current_track_gc;
 976   else
 977     main_gc = g_array_index(dp->vtl->track_gc, GdkGC *, dp->track_gc_iter);
 978
 979   if (list) {
 980     int x, y, oldx, oldy;
 981     VikTrackpoint *tp = VIK_TRACKPOINT(list->data);
 982
 983     tp_size = (list == dp->vtl->current_tpl) ? tp_size_cur : tp_size_reg;
 984
 985     vik_viewport_coord_to_screen ( dp->vp, &(tp->coord), &x, &y );
 986
 987     if ( (drawpoints) && dp->track_gc_iter < VIK_TRW_LAYER_TRACK_GC )
 988     {
 989       GdkPoint trian[3] = { { x, y-(3*tp_size) }, { x-(2*tp_size), y+(2*tp_size) }, {x+(2*tp_size), y+(2*tp_size)} };
 990       vik_viewport_draw_polygon ( dp->vp, main_gc, TRUE, trian, 3 );
 991     }
 992
 993     oldx = x;
 994     oldy = y;
 995
 996     while ((list = g_list_next(list)))
 997     {
 998       tp = VIK_TRACKPOINT(list->data);
 999       tp_size = (list == dp->vtl->current_tpl) ? tp_size_cur : tp_size_reg;
1000
1001       /* check some stuff -- but only if we're in UTM and there's only ONE ZONE; or lat lon */
1002       if ( (!dp->one_zone && !dp->lat_lon) ||     /* UTM & zones; do everything */
1003              ( ((!dp->one_zone) || tp->coord.utm_zone == dp->center->utm_zone) &&   /* only check zones if UTM & one_zone */
1004              tp->coord.east_west < dp->ce2 && tp->coord.east_west > dp->ce1 &&  /* both UTM and lat lon */
1005              tp->coord.north_south > dp->cn1 && tp->coord.north_south < dp->cn2 ) )
1006       {
1007         vik_viewport_coord_to_screen ( dp->vp, &(tp->coord), &x, &y );
1008
1009         if ( drawpoints && ! drawing_white_background )
1010         {
1011           if ( list->next ) {
1012             vik_viewport_draw_rectangle ( dp->vp, main_gc, TRUE, x-tp_size, y-tp_size, 2*tp_size, 2*tp_size );
1013
1014             /* stops */
1015             if ( drawstops && VIK_TRACKPOINT(list->next->data)->timestamp - VIK_TRACKPOINT(list->data)->timestamp > dp->vtl->stop_length )
1016               vik_viewport_draw_arc ( dp->vp, g_array_index(dp->vtl->track_gc, GdkGC *, 11), TRUE, x-(3*tp_size), y-(3*tp_size), 6*tp_size, 6*tp_size, 0, 360*64 );
1017           }
1018           else
1019             vik_viewport_draw_arc ( dp->vp, main_gc, TRUE, x-(2*tp_size), y-(2*tp_size), 4*tp_size, 4*tp_size, 0, 360*64 );
1020         }
1021
1022         if ((!tp->newsegment) && (dp->vtl->drawlines))
1023         {
1024           VikTrackpoint *tp2 = VIK_TRACKPOINT(list->prev->data);
1025
1026           /* UTM only: zone check */
1027           if ( drawpoints && dp->vtl->coord_mode == VIK_COORD_UTM && tp->coord.utm_zone != dp->center->utm_zone )
1028             draw_utm_skip_insignia (  dp->vp, main_gc, x, y);
1029
1030           if ( dp->vtl->drawmode == DRAWMODE_BY_VELOCITY ) {
1031             dp->track_gc_iter = calculate_velocity ( dp->vtl, tp, tp2 );
1032             main_gc = g_array_index(dp->vtl->track_gc, GdkGC *, dp->track_gc_iter);
1033           }
1034
1035           if (!useoldvals)
1036             vik_viewport_coord_to_screen ( dp->vp, &(tp2->coord), &oldx, &oldy );
1037
1038           if ( drawing_white_background ) {
1039             vik_viewport_draw_line ( dp->vp, dp->vtl->track_bg_gc, oldx, oldy, x, y);
1040           }
1041           else {
1042
1043             vik_viewport_draw_line ( dp->vp, main_gc, oldx, oldy, x, y);
1044             if ( dp->vtl->drawelevation && list && list->next && VIK_TRACKPOINT(list->next->data)->altitude != VIK_DEFAULT_ALTITUDE ) {
1045               GdkPoint tmp[4];
1046               #define FIXALTITUDE(what) ((VIK_TRACKPOINT((what))->altitude-min_alt)/alt_diff*DRAW_ELEVATION_FACTOR*dp->vtl->elevation_factor/dp->xmpp)
1047               if ( list && list->next && VIK_TRACKPOINT(list->next->data)->altitude != VIK_DEFAULT_ALTITUDE ) {
1048                 tmp[0].x = oldx;
1049                 tmp[0].y = oldy;
1050                 tmp[1].x = oldx;
1051                 tmp[1].y = oldy-FIXALTITUDE(list->data);
1052                 tmp[2].x = x;
1053                 tmp[2].y = y-FIXALTITUDE(list->next->data);
1054                 tmp[3].x = x;
1055                 tmp[3].y = y;
1056
1057                 GdkGC *tmp_gc;
1058                 if ( ((oldx - x) > 0 && (oldy - y) > 0) || ((oldx - x) < 0 && (oldy - y) < 0))
1059                   tmp_gc = GTK_WIDGET(dp->vp)->style->light_gc[3];
1060                 else
1061                   tmp_gc = GTK_WIDGET(dp->vp)->style->dark_gc[0];
1062                 vik_viewport_draw_polygon ( dp->vp, tmp_gc, TRUE, tmp, 4);
1063               }
1064               vik_viewport_draw_line ( dp->vp, main_gc, oldx, oldy-FIXALTITUDE(list->data), x, y-FIXALTITUDE(list->next->data));
1065             }
1066           }
1067         }
1068
1069         oldx = x;
1070         oldy = y;
1071         useoldvals = TRUE;
1072       }
1073       else {
1074         if (useoldvals && dp->vtl->drawlines && (!tp->newsegment))
1075         {
1076           VikTrackpoint *tp2 = VIK_TRACKPOINT(list->prev->data);
1077           if ( dp->vtl->coord_mode != VIK_COORD_UTM || tp->coord.utm_zone == dp->center->utm_zone )
1078           {
1079             vik_viewport_coord_to_screen ( dp->vp, &(tp->coord), &x, &y );
1080             if ( dp->vtl->drawmode == DRAWMODE_BY_VELOCITY ) {
1081               dp->track_gc_iter = calculate_velocity ( dp->vtl, tp, tp2 );
1082               main_gc = g_array_index(dp->vtl->track_gc, GdkGC *, dp->track_gc_iter);
1083             }
1084
1085             if ( drawing_white_background )
1086               vik_viewport_draw_line ( dp->vp, dp->vtl->track_bg_gc, oldx, oldy, x, y);
1087             else
1088               vik_viewport_draw_line ( dp->vp, main_gc, oldx, oldy, x, y);
1089           }
1090           else
1091           {
1092             vik_viewport_coord_to_screen ( dp->vp, &(tp2->coord), &x, &y );
1093             draw_utm_skip_insignia ( dp->vp, main_gc, x, y );
1094           }
1095         }
1096         useoldvals = FALSE;
1097       }
1098     }
1099   }
1100   if ( dp->vtl->drawmode == DRAWMODE_BY_TRACK )
1101     if ( ++(dp->track_gc_iter) >= VIK_TRW_LAYER_TRACK_GC )
1102       dp->track_gc_iter = 0;
1103 }
1104
1105 /* the only reason this exists is so that trw_layer_draw_track can first call itself to draw the white track background */
1106 static void trw_layer_draw_track_cb ( const gchar *name, VikTrack *track, struct DrawingParams *dp )
1107 {
1108   trw_layer_draw_track ( name, track, dp, FALSE );
1109 }
1110
1111 static void cached_pixbuf_free ( CachedPixbuf *cp )
1112 {
1113   g_object_unref ( G_OBJECT(cp->pixbuf) );
1114   g_free ( cp->image );
1115 }
1116
1117 static gint cached_pixbuf_cmp ( CachedPixbuf *cp, const gchar *name )
1118 {
1119   return strcmp ( cp->image, name );
1120 }
1121
1122 static void trw_layer_draw_waypoint ( const gchar *name, VikWaypoint *wp, struct DrawingParams *dp )
1123 {
1124   if ( wp->visible )
1125   if ( (!dp->one_zone && !dp->lat_lon) || ( ( dp->lat_lon || wp->coord.utm_zone == dp->center->utm_zone ) &&
1126              wp->coord.east_west < dp->ce2 && wp->coord.east_west > dp->ce1 &&
1127              wp->coord.north_south > dp->cn1 && wp->coord.north_south < dp->cn2 ) )
1128   {
1129     gint x, y;
1130     GdkPixbuf *sym = NULL;
1131     vik_viewport_coord_to_screen ( dp->vp, &(wp->coord), &x, &y );
1132
1133     /* if in shrunken_cache, get that. If not, get and add to shrunken_cache */
1134
1135     if ( wp->image && dp->vtl->drawimages )
1136     {
1137       GdkPixbuf *pixbuf = NULL;
1138       GList *l;
1139
1140       if ( dp->vtl->image_alpha == 0)
1141         return;
1142
1143       l = g_list_find_custom ( dp->vtl->image_cache->head, wp->image, (GCompareFunc) cached_pixbuf_cmp );
1144       if ( l )
1145         pixbuf = ((CachedPixbuf *) l->data)->pixbuf;
1146       else
1147       {
1148         gchar *image = wp->image;
1149         GdkPixbuf *regularthumb = a_thumbnails_get ( wp->image );
1150         if ( ! regularthumb )
1151         {
1152           regularthumb = a_thumbnails_get_default (); /* cache one 'not yet loaded' for all thumbs not loaded */
1153           image = "\x12\x00"; /* this shouldn't occur naturally. */
1154         }
1155         if ( regularthumb )
1156         {
1157           CachedPixbuf *cp = NULL;
1158           cp = g_malloc ( sizeof ( CachedPixbuf ) );
1159           if ( dp->vtl->image_size == 128 )
1160             cp->pixbuf = regularthumb;
1161           else
1162           {
1163             cp->pixbuf = a_thumbnails_scale_pixbuf(regularthumb, dp->vtl->image_size, dp->vtl->image_size);
1164             g_assert ( cp->pixbuf );
1165             g_object_unref ( G_OBJECT(regularthumb) );
1166           }
1167           cp->image = g_strdup ( image );
1168
1169           /* needed so 'click picture' tool knows how big the pic is; we don't
1170            * store it in cp because they may have been freed already. */
1171           wp->image_width = gdk_pixbuf_get_width ( cp->pixbuf );
1172           wp->image_height = gdk_pixbuf_get_height ( cp->pixbuf );
1173
1174           g_queue_push_head ( dp->vtl->image_cache, cp );
1175           if ( dp->vtl->image_cache->length > dp->vtl->image_cache_size )
1176             cached_pixbuf_free ( g_queue_pop_tail ( dp->vtl->image_cache ) );
1177
1178           pixbuf = cp->pixbuf;
1179         }
1180         else
1181         {
1182           pixbuf = a_thumbnails_get_default (); /* thumbnail not yet loaded */
1183         }
1184       }
1185       if ( pixbuf )
1186       {
1187         gint w, h;
1188         w = gdk_pixbuf_get_width ( pixbuf );
1189         h = gdk_pixbuf_get_height ( pixbuf );
1190
1191         if ( x+(w/2) > 0 && y+(h/2) > 0 && x-(w/2) < dp->width && y-(h/2) < dp->height ) /* always draw within boundaries */
1192         {
1193           if ( dp->vtl->image_alpha == 255 )
1194             vik_viewport_draw_pixbuf ( dp->vp, pixbuf, 0, 0, x - (w/2), y - (h/2), w, h );
1195           else
1196             vik_viewport_draw_pixbuf_with_alpha ( dp->vp, pixbuf, dp->vtl->image_alpha, 0, 0, x - (w/2), y - (h/2), w, h );
1197         }
1198         return; /* if failed to draw picture, default to drawing regular waypoint (below) */
1199       }
1200     }
1201
1202     /* DRAW ACTUAL DOT */
1203     if ( dp->vtl->wp_draw_symbols && wp->symbol && (sym = a_get_wp_sym(wp->symbol)) ) {
1204       vik_viewport_draw_pixbuf ( dp->vp, sym, 0, 0, x - gdk_pixbuf_get_width(sym)/2, y - gdk_pixbuf_get_height(sym)/2, -1, -1 );
1205     }
1206     else if ( wp == dp->vtl->current_wp ) {
1207       switch ( dp->vtl->wp_symbol ) {
1208         case WP_SYMBOL_FILLED_SQUARE: vik_viewport_draw_rectangle ( dp->vp, dp->vtl->waypoint_gc, TRUE, x - (dp->vtl->wp_size), y - (dp->vtl->wp_size), dp->vtl->wp_size*2, dp->vtl->wp_size*2 ); break;
1209         case WP_SYMBOL_SQUARE: vik_viewport_draw_rectangle ( dp->vp, dp->vtl->waypoint_gc, FALSE, x - (dp->vtl->wp_size), y - (dp->vtl->wp_size), dp->vtl->wp_size*2, dp->vtl->wp_size*2 ); break;
1210         case WP_SYMBOL_CIRCLE: vik_viewport_draw_arc ( dp->vp, dp->vtl->waypoint_gc, TRUE, x - dp->vtl->wp_size, y - dp->vtl->wp_size, dp->vtl->wp_size, dp->vtl->wp_size, 0, 360*64 ); break;
1211         case WP_SYMBOL_X: vik_viewport_draw_line ( dp->vp, dp->vtl->waypoint_gc, x - dp->vtl->wp_size*2, y - dp->vtl->wp_size*2, x + dp->vtl->wp_size*2, y + dp->vtl->wp_size*2 );
1212                           vik_viewport_draw_line ( dp->vp, dp->vtl->waypoint_gc, x - dp->vtl->wp_size*2, y + dp->vtl->wp_size*2, x + dp->vtl->wp_size*2, y - dp->vtl->wp_size*2 );
1213       }
1214     }
1215     else {
1216       switch ( dp->vtl->wp_symbol ) {
1217         case WP_SYMBOL_FILLED_SQUARE: vik_viewport_draw_rectangle ( dp->vp, dp->vtl->waypoint_gc, TRUE, x - dp->vtl->wp_size/2, y - dp->vtl->wp_size/2, dp->vtl->wp_size, dp->vtl->wp_size ); break;
1218         case WP_SYMBOL_SQUARE: vik_viewport_draw_rectangle ( dp->vp, dp->vtl->waypoint_gc, FALSE, x - dp->vtl->wp_size/2, y - dp->vtl->wp_size/2, dp->vtl->wp_size, dp->vtl->wp_size ); break;
1219         case WP_SYMBOL_CIRCLE: vik_viewport_draw_arc ( dp->vp, dp->vtl->waypoint_gc, TRUE, x-dp->vtl->wp_size/2, y-dp->vtl->wp_size/2, dp->vtl->wp_size, dp->vtl->wp_size, 0, 360*64 ); break;
1220         case WP_SYMBOL_X: vik_viewport_draw_line ( dp->vp, dp->vtl->waypoint_gc, x-dp->vtl->wp_size, y-dp->vtl->wp_size, x+dp->vtl->wp_size, y+dp->vtl->wp_size );
1221                           vik_viewport_draw_line ( dp->vp, dp->vtl->waypoint_gc, x-dp->vtl->wp_size, y+dp->vtl->wp_size, x+dp->vtl->wp_size, y-dp->vtl->wp_size ); break;
1222       }
1223     }
1224
1225     if ( dp->vtl->drawlabels )
1226     {
1227       /* thanks to the GPSDrive people (Fritz Ganter et al.) for hints on this part ... yah, I'm too lazy to study documentation */
1228       gint label_x, label_y;
1229       gint width, height;
1230       pango_layout_set_text ( dp->vtl->wplabellayout, name, -1 );
1231       pango_layout_get_pixel_size ( dp->vtl->wplabellayout, &width, &height );
1232       label_x = x - width/2;
1233       if (sym)
1234         label_y = y - height - 2 - gdk_pixbuf_get_height(sym)/2;
1235       else
1236         label_y = y - dp->vtl->wp_size - height - 2;
1237
1238       vik_viewport_draw_rectangle ( dp->vp, dp->vtl->waypoint_bg_gc, TRUE, label_x - 1, label_y-1,width+2,height+2);
1239       vik_viewport_draw_layout ( dp->vp, dp->vtl->waypoint_text_gc, label_x, label_y, dp->vtl->wplabellayout );
1240     }
1241   }
1242 }
1243
1244 void vik_trw_layer_draw ( VikTrwLayer *l, gpointer data )
1245 {
1246   static struct DrawingParams dp;
1247   g_assert ( l != NULL );
1248
1249   init_drawing_params ( &dp, VIK_VIEWPORT(data) );
1250   dp.vtl = l;
1251
1252   if ( l->tracks_visible )
1253     g_hash_table_foreach ( l->tracks, (GHFunc) trw_layer_draw_track_cb, &dp );
1254
1255   if (l->waypoints_visible)
1256     g_hash_table_foreach ( l->waypoints, (GHFunc) trw_layer_draw_waypoint, &dp );
1257 }
1258
1259 static void trw_layer_free_track_gcs ( VikTrwLayer *vtl )
1260 {
1261   int i;
1262   if ( vtl->track_bg_gc )
1263   {
1264     g_object_unref ( vtl->track_bg_gc );
1265     vtl->track_bg_gc = NULL;
1266   }
1267   if ( vtl->current_track_gc )
1268   {
1269     g_object_unref ( vtl->current_track_gc );
1270     vtl->current_track_gc = NULL;
1271   }
1272
1273   if ( ! vtl->track_gc )
1274     return;
1275   for ( i = vtl->track_gc->len - 1; i >= 0; i-- )
1276     g_object_unref ( g_array_index ( vtl->track_gc, GObject *, i ) );
1277   g_array_free ( vtl->track_gc, TRUE );
1278   vtl->track_gc = NULL;
1279 }
1280
1281 static void trw_layer_new_track_gcs ( VikTrwLayer *vtl, VikViewport *vp )
1282 {
1283   GdkGC *gc[ VIK_TRW_LAYER_TRACK_GC ];
1284   gint width = vtl->line_thickness;
1285
1286   if ( vtl->track_gc )
1287     trw_layer_free_track_gcs ( vtl );
1288
1289   if ( vtl->track_bg_gc )
1290     g_object_unref ( vtl->track_bg_gc );
1291   vtl->track_bg_gc = vik_viewport_new_gc ( vp, "#FFFFFF", width + vtl->bg_line_thickness );
1292
1293   if ( vtl->current_track_gc )
1294     g_object_unref ( vtl->current_track_gc );
1295   vtl->current_track_gc = vik_viewport_new_gc ( vp, "#FF0000", 2 );
1296   gdk_gc_set_line_attributes ( vtl->current_track_gc, 2, GDK_LINE_ON_OFF_DASH, GDK_CAP_ROUND, GDK_JOIN_ROUND );
1297
1298   vtl->track_gc = g_array_sized_new ( FALSE, FALSE, sizeof ( GdkGC * ), VIK_TRW_LAYER_TRACK_GC );
1299
1300   gc[0] = vik_viewport_new_gc ( vp, "#2d870a", width ); /* below range */
1301
1302   gc[1] = vik_viewport_new_gc ( vp, "#0a8742", width );
1303   gc[2] = vik_viewport_new_gc ( vp, "#0a8783", width );
1304   gc[3] = vik_viewport_new_gc ( vp, "#0a4d87", width );
1305   gc[4] = vik_viewport_new_gc ( vp, "#05469f", width );
1306   gc[5] = vik_viewport_new_gc ( vp, "#1b059f", width );
1307   gc[6] = vik_viewport_new_gc ( vp, "#2d059f", width );
1308   gc[7] = vik_viewport_new_gc ( vp, "#4a059f", width );
1309   gc[8] = vik_viewport_new_gc ( vp, "#84059f", width );
1310   gc[9] = vik_viewport_new_gc ( vp, "#96059f", width );
1311   gc[10] = vik_viewport_new_gc ( vp, "#f22ef2", width );
1312
1313   gc[11] = vik_viewport_new_gc ( vp, "#ff0000", width ); /* above range */
1314
1315   gc[12] = vik_viewport_new_gc ( vp, "#000000", width ); /* black / no speed data */
1316
1317   g_array_append_vals ( vtl->track_gc, gc, VIK_TRW_LAYER_TRACK_GC );
1318 }
1319
1320 VikTrwLayer *vik_trw_layer_create ( VikViewport *vp )
1321 {
1322   VikTrwLayer *rv = vik_trw_layer_new ( 0 );
1323   PangoFontDescription *pfd;
1324   rv->wplabellayout = gtk_widget_create_pango_layout (GTK_WIDGET(vp), NULL);
1325   pfd = pango_font_description_from_string (WAYPOINT_FONT);
1326   pango_layout_set_font_description (rv->wplabellayout, pfd);
1327   /* freeing PangoFontDescription, cause it has been copied by prev. call */
1328   pango_font_description_free (pfd);
1329
1330   vik_layer_rename ( VIK_LAYER(rv), vik_trw_layer_interface.name );
1331
1332   trw_layer_new_track_gcs ( rv, vp );
1333
1334   rv->waypoint_gc = vik_viewport_new_gc ( vp, "#000000", 2 );
1335   rv->waypoint_text_gc = vik_viewport_new_gc ( vp, "#FFFFFF", 1 );
1336   rv->waypoint_bg_gc = vik_viewport_new_gc ( vp, "#8383C4", 1 );
1337   gdk_gc_set_function ( rv->waypoint_bg_gc, GDK_AND );
1338
1339   rv->waypoint_font = gdk_font_load ( "-*-helvetica-bold-r-normal-*-*-100-*-*-p-*-iso8859-1" );
1340
1341   rv->has_verified_thumbnails = FALSE;
1342   rv->wp_symbol = WP_SYMBOL_FILLED_SQUARE;
1343   rv->wp_size = 4;
1344   rv->wp_draw_symbols = TRUE;
1345
1346   rv->coord_mode = vik_viewport_get_coord_mode ( vp );
1347
1348   rv->menu_selection = vik_layer_get_interface(VIK_LAYER(rv)->type)->menu_items_selection;
1349
1350   return rv;
1351 }
1352
1353 static void trw_layer_realize_track ( gchar *name, VikTrack *track, gpointer pass_along[4] )
1354 {
1355   GtkTreeIter *new_iter = g_malloc(sizeof(GtkTreeIter));
1356
1357 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
1358   vik_treeview_add_sublayer_alphabetized ( (VikTreeview *) pass_along[3], (GtkTreeIter *) pass_along[0], (GtkTreeIter *) pass_along[1], name, pass_along[2], name, GPOINTER_TO_INT (pass_along[4]), NULL, TRUE, TRUE );
1359 #else
1360   vik_treeview_add_sublayer ( (VikTreeview *) pass_along[3], (GtkTreeIter *) pass_along[0], (GtkTreeIter *) pass_along[1], name, pass_along[2], name, (gint) pass_along[4], NULL, TRUE, TRUE );
1361 #endif
1362
1363   *new_iter = *((GtkTreeIter *) pass_along[1]);
1364   g_hash_table_insert ( VIK_TRW_LAYER(pass_along[2])->tracks_iters, name, new_iter );
1365
1366   if ( ! track->visible )
1367     vik_treeview_item_set_visible ( (VikTreeview *) pass_along[3], (GtkTreeIter *) pass_along[1], FALSE );
1368 }
1369
1370 static void trw_layer_realize_waypoint ( gchar *name, VikWaypoint *wp, gpointer pass_along[4] )
1371 {
1372   GtkTreeIter *new_iter = g_malloc(sizeof(GtkTreeIter));
1373 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
1374   vik_treeview_add_sublayer_alphabetized ( (VikTreeview *) pass_along[3], (GtkTreeIter *) pass_along[0], (GtkTreeIter *) pass_along[1], name, pass_along[2], name, GPOINTER_TO_INT (pass_along[4]), NULL, TRUE, TRUE );
1375 #else
1376   vik_treeview_add_sublayer ( (VikTreeview *) pass_along[3], (GtkTreeIter *) pass_along[0], (GtkTreeIter *) pass_along[1], name, pass_along[2], name, (gint) pass_along[4], NULL, TRUE, TRUE );
1377 #endif
1378
1379   *new_iter = *((GtkTreeIter *) pass_along[1]);
1380   g_hash_table_insert ( VIK_TRW_LAYER(pass_along[2])->waypoints_iters, name, new_iter );
1381
1382   if ( ! wp->visible )
1383     vik_treeview_item_set_visible ( (VikTreeview *) pass_along[3], (GtkTreeIter *) pass_along[1], FALSE );
1384 }
1385
1386
1387 void vik_trw_layer_realize ( VikTrwLayer *vtl, VikTreeview *vt, GtkTreeIter *layer_iter )
1388 {
1389   GtkTreeIter iter2;
1390   gpointer pass_along[5] = { &(vtl->tracks_iter), &iter2, vtl, vt, (gpointer) VIK_TRW_LAYER_SUBLAYER_TRACK };
1391
1392 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
1393   vik_treeview_add_sublayer_alphabetized ( (VikTreeview *) vt, layer_iter, &(vtl->tracks_iter), _("Tracks"), vtl, NULL, VIK_TRW_LAYER_SUBLAYER_TRACKS, NULL, TRUE, FALSE );
1394 #else
1395   vik_treeview_add_sublayer ( (VikTreeview *) vt, layer_iter, &(vtl->tracks_iter), _("Tracks"), vtl, NULL, VIK_TRW_LAYER_SUBLAYER_TRACKS, NULL, TRUE, FALSE );
1396 #endif
1397   if ( ! vtl->tracks_visible )
1398     vik_treeview_item_set_visible ( (VikTreeview *) vt, &(vtl->tracks_iter), FALSE );
1399
1400   g_hash_table_foreach ( vtl->tracks, (GHFunc) trw_layer_realize_track, pass_along );
1401
1402 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
1403   vik_treeview_add_sublayer_alphabetized ( (VikTreeview *) vt, layer_iter, &(vtl->waypoints_iter), _("Waypoints"), vtl, NULL, VIK_TRW_LAYER_SUBLAYER_WAYPOINTS, NULL, TRUE, FALSE );
1404 #else
1405   vik_treeview_add_sublayer ( (VikTreeview *) vt, layer_iter, &(vtl->waypoints_iter), _("Waypoints"), vtl, NULL, VIK_TRW_LAYER_SUBLAYER_WAYPOINTS, NULL, TRUE, FALSE );
1406 #endif
1407
1408   if ( ! vtl->waypoints_visible )
1409     vik_treeview_item_set_visible ( (VikTreeview *) vt, &(vtl->waypoints_iter), FALSE );
1410
1411   pass_along[0] = &(vtl->waypoints_iter);
1412   pass_along[4] = (gpointer) VIK_TRW_LAYER_SUBLAYER_WAYPOINT;
1413
1414   g_hash_table_foreach ( vtl->waypoints, (GHFunc) trw_layer_realize_waypoint, pass_along );
1415
1416 }
1417
1418 gboolean vik_trw_layer_sublayer_toggle_visible ( VikTrwLayer *l, gint subtype, gpointer sublayer )
1419 {
1420   switch ( subtype )
1421   {
1422     case VIK_TRW_LAYER_SUBLAYER_TRACKS: return (l->tracks_visible ^= 1);
1423     case VIK_TRW_LAYER_SUBLAYER_WAYPOINTS: return (l->waypoints_visible ^= 1);
1424     case VIK_TRW_LAYER_SUBLAYER_TRACK:
1425     {
1426       VikTrack *t = g_hash_table_lookup ( l->tracks, sublayer );
1427       if (t)
1428         return (t->visible ^= 1);
1429       else
1430         return TRUE;
1431     }
1432     case VIK_TRW_LAYER_SUBLAYER_WAYPOINT:
1433     {
1434       VikWaypoint *t = g_hash_table_lookup ( l->waypoints, sublayer );
1435       if (t)
1436         return (t->visible ^= 1);
1437       else
1438         return TRUE;
1439     }
1440   }
1441   return TRUE;
1442 }
1443
1444 GHashTable *vik_trw_layer_get_tracks ( VikTrwLayer *l )
1445 {
1446   return l->tracks;
1447 }
1448
1449 GHashTable *vik_trw_layer_get_waypoints ( VikTrwLayer *l )
1450 {
1451   return l->waypoints;
1452 }
1453
1454 static void trw_layer_find_maxmin_waypoints ( const gchar *name, const VikWaypoint *w, struct LatLon maxmin[2] )
1455 {
1456   static VikCoord fixme;
1457   vik_coord_copy_convert ( &(w->coord), VIK_COORD_LATLON, &fixme );
1458   if ( VIK_LATLON(&fixme)->lat > maxmin[0].lat || maxmin[0].lat == 0.0 )
1459     maxmin[0].lat = VIK_LATLON(&fixme)->lat;
1460   if ( VIK_LATLON(&fixme)->lat < maxmin[1].lat || maxmin[1].lat == 0.0 )
1461     maxmin[1].lat = VIK_LATLON(&fixme)->lat;
1462   if ( VIK_LATLON(&fixme)->lon > maxmin[0].lon || maxmin[0].lon == 0.0 )
1463     maxmin[0].lon = VIK_LATLON(&fixme)->lon;
1464   if ( VIK_LATLON(&fixme)->lon < maxmin[1].lon || maxmin[1].lon == 0.0 )
1465     maxmin[1].lon = VIK_LATLON(&fixme)->lon;
1466 }
1467
1468 static void trw_layer_find_maxmin_tracks ( const gchar *name, GList **t, struct LatLon maxmin[2] )
1469 {
1470   GList *tr = *t;
1471   static VikCoord fixme;
1472
1473   while ( tr )
1474   {
1475     vik_coord_copy_convert ( &(VIK_TRACKPOINT(tr->data)->coord), VIK_COORD_LATLON, &fixme );
1476     if ( VIK_LATLON(&fixme)->lat > maxmin[0].lat || maxmin[0].lat == 0.0 )
1477       maxmin[0].lat = VIK_LATLON(&fixme)->lat;
1478     if ( VIK_LATLON(&fixme)->lat < maxmin[1].lat || maxmin[1].lat == 0.0 )
1479       maxmin[1].lat = VIK_LATLON(&fixme)->lat;
1480     if ( VIK_LATLON(&fixme)->lon > maxmin[0].lon || maxmin[0].lon == 0.0 )
1481       maxmin[0].lon = VIK_LATLON(&fixme)->lon;
1482     if ( VIK_LATLON(&fixme)->lon < maxmin[1].lon || maxmin[1].lon == 0.0 )
1483       maxmin[1].lon = VIK_LATLON(&fixme)->lon;
1484     tr = tr->next;
1485   }
1486 }
1487
1488 static void trw_layer_find_maxmin (VikTrwLayer *vtl, struct LatLon maxmin[2])
1489 {
1490   struct LatLon wpt_maxmin[2] = { {0.0,0.0}, {0.0,0.0} };
1491   struct LatLon trk_maxmin[2] = { {0.0,0.0}, {0.0,0.0} };
1492
1493   g_hash_table_foreach ( vtl->waypoints, (GHFunc) trw_layer_find_maxmin_waypoints, wpt_maxmin );
1494   g_hash_table_foreach ( vtl->tracks, (GHFunc) trw_layer_find_maxmin_tracks, trk_maxmin );
1495   if ((wpt_maxmin[0].lat != 0.0 && wpt_maxmin[0].lat > trk_maxmin[0].lat) || trk_maxmin[0].lat == 0.0) {
1496     maxmin[0].lat = wpt_maxmin[0].lat;
1497   }
1498   else {
1499     maxmin[0].lat = trk_maxmin[0].lat;
1500   }
1501   if ((wpt_maxmin[0].lon != 0.0 && wpt_maxmin[0].lon > trk_maxmin[0].lon) || trk_maxmin[0].lon == 0.0) {
1502     maxmin[0].lon = wpt_maxmin[0].lon;
1503   }
1504   else {
1505     maxmin[0].lon = trk_maxmin[0].lon;
1506   }
1507   if ((wpt_maxmin[1].lat != 0.0 && wpt_maxmin[1].lat < trk_maxmin[1].lat) || trk_maxmin[1].lat == 0.0) {
1508     maxmin[1].lat = wpt_maxmin[1].lat;
1509   }
1510   else {
1511     maxmin[1].lat = trk_maxmin[1].lat;
1512   }
1513   if ((wpt_maxmin[1].lon != 0.0 && wpt_maxmin[1].lon < trk_maxmin[1].lon) || trk_maxmin[1].lon == 0.0) {
1514     maxmin[1].lon = wpt_maxmin[1].lon;
1515   }
1516   else {
1517     maxmin[1].lon = trk_maxmin[1].lon;
1518   }
1519 }
1520
1521 gboolean vik_trw_layer_find_center ( VikTrwLayer *vtl, VikCoord *dest )
1522 {
1523   /* TODO: what if there's only one waypoint @ 0,0, it will think nothing found. like I don't have more important things to worry about... */
1524   struct LatLon maxmin[2] = { {0.0,0.0}, {0.0,0.0} };
1525   trw_layer_find_maxmin (vtl, maxmin);
1526   if (maxmin[0].lat == 0.0 && maxmin[0].lon == 0.0 && maxmin[1].lat == 0.0 && maxmin[1].lon == 0.0)
1527     return FALSE;
1528   else
1529   {
1530     struct LatLon average = { (maxmin[0].lat+maxmin[1].lat)/2, (maxmin[0].lon+maxmin[1].lon)/2 };
1531     vik_coord_load_from_latlon ( dest, vtl->coord_mode, &average );
1532     return TRUE;
1533   }
1534 }
1535
1536 static void trw_layer_centerize ( gpointer layer_and_vlp[2] )
1537 {
1538   VikCoord coord;
1539   if ( vik_trw_layer_find_center ( VIK_TRW_LAYER(layer_and_vlp[0]), &coord ) )
1540     goto_coord ( VIK_LAYERS_PANEL(layer_and_vlp[1]), &coord );
1541   else
1542     a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_LAYER(layer_and_vlp[0]), _("This layer has no waypoints or trackpoints.") );
1543 }
1544
1545 static void trw_layer_export ( gpointer layer_and_vlp[2], guint file_type )
1546 {
1547   GtkWidget *file_selector;
1548   const gchar *fn;
1549   gboolean failed = FALSE;
1550   file_selector = gtk_file_chooser_dialog_new (_("Export Layer"),
1551                                       NULL,
1552                                       GTK_FILE_CHOOSER_ACTION_SAVE,
1553                                       GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
1554                                       GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
1555                                       NULL);
1556   gtk_file_chooser_set_current_name (GTK_FILE_CHOOSER(file_selector), vik_layer_get_name(VIK_LAYER(layer_and_vlp[0])));
1557
1558   while ( gtk_dialog_run ( GTK_DIALOG(file_selector) ) == GTK_RESPONSE_ACCEPT )
1559   {
1560     fn = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(file_selector) );
1561     if ( g_file_test ( fn, G_FILE_TEST_EXISTS ) == FALSE )
1562     {
1563       gtk_widget_hide ( file_selector );
1564       failed = ! a_file_export ( VIK_TRW_LAYER(layer_and_vlp[0]), fn, file_type );
1565       break;
1566     }
1567     else
1568     {
1569       if ( a_dialog_overwrite ( GTK_WINDOW(file_selector), _("The file \"%s\" exists, do you wish to overwrite it?"), a_file_basename ( fn ) ) )
1570       {
1571         gtk_widget_hide ( file_selector );
1572         failed = ! a_file_export ( VIK_TRW_LAYER(layer_and_vlp[0]), fn, file_type );
1573         break;
1574       }
1575     }
1576   }
1577   gtk_widget_destroy ( file_selector );
1578   if ( failed )
1579     a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(layer_and_vlp[0]), _("The filename you requested could not be opened for writing.") );
1580 }
1581
1582 static void trw_layer_export_gpspoint ( gpointer layer_and_vlp[2] )
1583 {
1584   trw_layer_export ( layer_and_vlp, FILE_TYPE_GPSPOINT );
1585 }
1586
1587 static void trw_layer_export_gpsmapper ( gpointer layer_and_vlp[2] )
1588 {
1589   trw_layer_export ( layer_and_vlp, FILE_TYPE_GPSMAPPER );
1590 }
1591
1592 static void trw_layer_export_gpx ( gpointer layer_and_vlp[2] )
1593 {
1594   trw_layer_export ( layer_and_vlp, FILE_TYPE_GPX );
1595 }
1596
1597 static void trw_layer_goto_wp ( gpointer layer_and_vlp[2] )
1598 {
1599   GHashTable *wps = vik_trw_layer_get_waypoints ( VIK_TRW_LAYER(layer_and_vlp[0]) );
1600   GtkWidget *dia = gtk_dialog_new_with_buttons (_("Find"),
1601                                                  VIK_GTK_WINDOW_FROM_LAYER(layer_and_vlp[0]),
1602                                                  GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
1603                                                  GTK_STOCK_CANCEL,
1604                                                  GTK_RESPONSE_REJECT,
1605                                                  GTK_STOCK_OK,
1606                                                  GTK_RESPONSE_ACCEPT,
1607                                                  NULL);
1608
1609   GtkWidget *label, *entry;
1610   label = gtk_label_new(_("Waypoint Name:"));
1611   entry = gtk_entry_new();
1612
1613   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dia)->vbox), label, FALSE, FALSE, 0);
1614   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dia)->vbox), entry, FALSE, FALSE, 0);
1615   gtk_widget_show_all ( label );
1616   gtk_widget_show_all ( entry );
1617
1618   while ( gtk_dialog_run ( GTK_DIALOG(dia) ) == GTK_RESPONSE_ACCEPT )
1619   {
1620     VikWaypoint *wp;
1621     gchar *upname = g_strdup(gtk_entry_get_text(GTK_ENTRY(entry)));
1622     int i;
1623
1624     for ( i = strlen(upname)-1; i >= 0; i-- )
1625       upname[i] = toupper(upname[i]);
1626
1627     wp = g_hash_table_lookup ( wps, upname );
1628
1629     if (!wp)
1630       a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(layer_and_vlp[0]), _("Waypoint not found in this layer.") );
1631     else
1632     {
1633       vik_viewport_set_center_coord ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(layer_and_vlp[1])), &(wp->coord) );
1634       vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(layer_and_vlp[1]) );
1635       vik_treeview_select_iter ( VIK_LAYER(layer_and_vlp[0])->vt, g_hash_table_lookup ( VIK_TRW_LAYER(layer_and_vlp[0])->waypoints_iters, upname ) );
1636       break;
1637     }
1638
1639     g_free ( upname );
1640
1641   }
1642   gtk_widget_destroy ( dia );
1643 }
1644
1645 gboolean vik_trw_layer_new_waypoint ( VikTrwLayer *vtl, GtkWindow *w, const VikCoord *def_coord )
1646 {
1647   gchar *name = highest_wp_number_get(vtl);
1648   VikWaypoint *wp = vik_waypoint_new();
1649   wp->coord = *def_coord;
1650
1651   if ( a_dialog_new_waypoint ( w, &name, wp, vik_trw_layer_get_waypoints ( vtl ), vtl->coord_mode ) )
1652   {
1653     wp->visible = TRUE;
1654     vik_trw_layer_add_waypoint ( vtl, name, wp );
1655     return TRUE;
1656   }
1657   vik_waypoint_free(wp);
1658   return FALSE;
1659 }
1660
1661 static void trw_layer_new_wikipedia_wp_viewport ( gpointer lav[2] )
1662 {
1663   VikCoord one, two;
1664   struct LatLon one_ll, two_ll;
1665   struct LatLon maxmin[2] = { {0.0,0.0}, {0.0,0.0} };
1666
1667   VikTrwLayer *vtl = VIK_TRW_LAYER(lav[0]);
1668   VikLayersPanel *vlp = VIK_LAYERS_PANEL(lav[1]);
1669   VikWindow *vw = (VikWindow *)(VIK_GTK_WINDOW_FROM_LAYER(vtl));
1670   VikViewport *vvp =  vik_window_viewport(vw);
1671   vik_viewport_screen_to_coord ( vvp, 0, 0, &one);
1672   vik_viewport_screen_to_coord ( vvp, vik_viewport_get_width(vvp), vik_viewport_get_height(vvp), &two);
1673   vik_coord_to_latlon(&one, &one_ll);
1674   vik_coord_to_latlon(&two, &two_ll);
1675   if (one_ll.lat > two_ll.lat) {
1676     maxmin[0].lat = one_ll.lat;
1677     maxmin[1].lat = two_ll.lat;
1678   }
1679   else {
1680     maxmin[0].lat = two_ll.lat;
1681     maxmin[1].lat = one_ll.lat;
1682   }
1683   if (one_ll.lon > two_ll.lon) {
1684     maxmin[0].lon = one_ll.lon;
1685     maxmin[1].lon = two_ll.lon;
1686   }
1687   else {
1688     maxmin[0].lon = two_ll.lon;
1689     maxmin[1].lon = one_ll.lon;
1690   }
1691   a_geonames_wikipedia_box((VikWindow *)(VIK_GTK_WINDOW_FROM_LAYER(vtl)), vtl, vlp, maxmin);
1692 }
1693
1694 static void trw_layer_new_wikipedia_wp_layer ( gpointer lav[2] )
1695 {
1696   VikTrwLayer *vtl = VIK_TRW_LAYER(lav[0]);
1697   VikLayersPanel *vlp = VIK_LAYERS_PANEL(lav[1]);
1698   struct LatLon maxmin[2] = { {0.0,0.0}, {0.0,0.0} };
1699
1700   trw_layer_find_maxmin (vtl, maxmin);
1701   a_geonames_wikipedia_box((VikWindow *)(VIK_GTK_WINDOW_FROM_LAYER(vtl)), vtl, vlp, maxmin);
1702 }
1703
1704 static void trw_layer_new_wp ( gpointer lav[2] )
1705 {
1706   VikTrwLayer *vtl = VIK_TRW_LAYER(lav[0]);
1707   VikLayersPanel *vlp = VIK_LAYERS_PANEL(lav[1]);
1708   /* TODO longone: okay, if layer above (aggregate) is invisible but vtl->visible is true, this redraws for no reason.
1709      instead return true if you want to update. */
1710   if ( vik_trw_layer_new_waypoint ( vtl, VIK_GTK_WINDOW_FROM_LAYER(vtl), vik_viewport_get_center(vik_layers_panel_get_viewport(vlp))) && VIK_LAYER(vtl)->visible )
1711     vik_layers_panel_emit_update ( vlp );
1712 }
1713
1714 void vik_trw_layer_add_menu_items ( VikTrwLayer *vtl, GtkMenu *menu, gpointer vlp )
1715 {
1716   static gpointer pass_along[2];
1717   GtkWidget *item;
1718   GtkWidget *export_submenu;
1719   GtkWidget *wikipedia_submenu;
1720   pass_along[0] = vtl;
1721   pass_along[1] = vlp;
1722
1723   item = gtk_menu_item_new();
1724   gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
1725   gtk_widget_show ( item );
1726
1727   item = gtk_menu_item_new_with_label ( _("Goto Center of Layer") );
1728   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_centerize), pass_along );
1729   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1730   gtk_widget_show ( item );
1731
1732   item = gtk_menu_item_new_with_label ( _("Goto Waypoint") );
1733   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_goto_wp), pass_along );
1734   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1735   gtk_widget_show ( item );
1736
1737   export_submenu = gtk_menu_new ();
1738   item = gtk_menu_item_new_with_label ( _("Export layer") );
1739   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1740   gtk_widget_show ( item );
1741   gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), export_submenu );
1742
1743   item = gtk_menu_item_new_with_label ( _("Export as GPSPoint") );
1744   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_export_gpspoint), pass_along );
1745   gtk_menu_shell_append (GTK_MENU_SHELL (export_submenu), item);
1746   gtk_widget_show ( item );
1747
1748   item = gtk_menu_item_new_with_label ( _("Export as GPSMapper") );
1749   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_export_gpsmapper), pass_along );
1750   gtk_menu_shell_append (GTK_MENU_SHELL (export_submenu), item);
1751   gtk_widget_show ( item );
1752
1753   item = gtk_menu_item_new_with_label ( _("Export as GPX") );
1754   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_export_gpx), pass_along );
1755   gtk_menu_shell_append (GTK_MENU_SHELL (export_submenu), item);
1756   gtk_widget_show ( item );
1757
1758   item = gtk_menu_item_new_with_label ( _("New Waypoint") );
1759   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_new_wp), pass_along );
1760   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1761   gtk_widget_show ( item );
1762
1763 #ifdef VIK_CONFIG_GEONAMES
1764   wikipedia_submenu = gtk_menu_new();
1765   item = gtk_menu_item_new_with_label ( _("Add Wikipedia Waypoints") );
1766   gtk_menu_shell_append(GTK_MENU_SHELL (menu), item);
1767   gtk_widget_show(item);
1768   gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), wikipedia_submenu);
1769
1770   item = gtk_menu_item_new_with_label ( _("Within layer bounds") );
1771   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_new_wikipedia_wp_layer), pass_along );
1772   gtk_menu_shell_append (GTK_MENU_SHELL (wikipedia_submenu), item);
1773   gtk_widget_show ( item );
1774
1775   item = gtk_menu_item_new_with_label ( _("Within current view") );
1776   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_new_wikipedia_wp_viewport), pass_along );
1777   gtk_menu_shell_append (GTK_MENU_SHELL (wikipedia_submenu), item);
1778   gtk_widget_show ( item );
1779 #endif
1780
1781 #ifdef VIK_CONFIG_OPENSTREETMAP
1782   item = gtk_menu_item_new_with_label ( _("Upload to OSM") );
1783   g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(osm_traces_upload_cb), pass_along );
1784   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1785   gtk_widget_show ( item );
1786 #endif
1787
1788   item = a_acquire_trwlayer_menu ( VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(vtl)), vlp,
1789         vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vlp)), vtl );
1790   if ( item ) {
1791     gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1792     gtk_widget_show ( item );
1793   }
1794
1795   item = a_acquire_trwlayer_track_menu ( VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(vtl)), vlp,
1796         vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vlp)), vtl );
1797   if ( item ) {
1798     gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
1799     gtk_widget_show ( item );
1800   }
1801 }
1802
1803 void vik_trw_layer_add_waypoint ( VikTrwLayer *vtl, gchar *name, VikWaypoint *wp )
1804 {
1805   if ( VIK_LAYER(vtl)->realized )
1806   {
1807     VikWaypoint *oldwp = VIK_WAYPOINT ( g_hash_table_lookup ( vtl->waypoints, name ) );
1808     if ( oldwp )
1809       wp->visible = oldwp->visible; /* same visibility so we don't have to update viktreeview */
1810     else
1811     {
1812       GtkTreeIter *iter = g_malloc(sizeof(GtkTreeIter));
1813 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
1814       vik_treeview_add_sublayer_alphabetized ( VIK_LAYER(vtl)->vt, &(vtl->waypoints_iter), iter, name, vtl, name, VIK_TRW_LAYER_SUBLAYER_WAYPOINT, NULL, TRUE, TRUE );
1815 #else
1816       vik_treeview_add_sublayer ( VIK_LAYER(vtl)->vt, &(vtl->waypoints_iter), iter, name, vtl, name, VIK_TRW_LAYER_SUBLAYER_WAYPOINT, NULL, TRUE, TRUE );
1817 #endif
1818       vik_treeview_select_iter ( VIK_LAYER(vtl)->vt, iter );
1819       g_hash_table_insert ( vtl->waypoints_iters, name, iter );
1820       wp->visible = TRUE;
1821     }
1822   }
1823   else
1824     wp->visible = TRUE;
1825
1826   highest_wp_number_add_wp(vtl, name);
1827   g_hash_table_insert ( vtl->waypoints, name, wp );
1828
1829 }
1830
1831 void vik_trw_layer_add_track ( VikTrwLayer *vtl, gchar *name, VikTrack *t )
1832 {
1833   if ( VIK_LAYER(vtl)->realized )
1834   {
1835     VikTrack *oldt = VIK_TRACK ( g_hash_table_lookup ( vtl->tracks, name ) );
1836     if ( oldt )
1837       t->visible = oldt->visible; /* same visibility so we don't have to update viktreeview */
1838     else
1839     {
1840       GtkTreeIter *iter = g_malloc(sizeof(GtkTreeIter));
1841 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
1842       vik_treeview_add_sublayer_alphabetized ( VIK_LAYER(vtl)->vt, &(vtl->tracks_iter), iter, name, vtl, name, VIK_TRW_LAYER_SUBLAYER_TRACK, NULL, t->visible, TRUE );
1843 #else
1844       vik_treeview_add_sublayer ( VIK_LAYER(vtl)->vt, &(vtl->tracks_iter), iter, name, vtl, name, VIK_TRW_LAYER_SUBLAYER_TRACK, NULL, t->visible, TRUE );
1845 #endif
1846       vik_treeview_select_iter ( VIK_LAYER(vtl)->vt, iter );
1847       g_hash_table_insert ( vtl->tracks_iters, name, iter );
1848       /* t->visible = TRUE; */
1849     }
1850   }
1851   else
1852     ; /* t->visible = TRUE; // this is now used by file input functions */
1853
1854   g_hash_table_insert ( vtl->tracks, name, t );
1855
1856 }
1857
1858 /* to be called whenever a track has been deleted or may have been changed. */
1859 void trw_layer_cancel_tps_of_track ( VikTrwLayer *vtl, const gchar *trk_name )
1860 {
1861   if (vtl->current_tp_track_name && g_strcasecmp(trk_name, vtl->current_tp_track_name) == 0)
1862     trw_layer_cancel_current_tp ( vtl, FALSE );
1863   else if (vtl->last_tp_track_name && g_strcasecmp(trk_name, vtl->last_tp_track_name) == 0)
1864     trw_layer_cancel_last_tp ( vtl );
1865 }
1866
1867 static gchar *get_new_unique_sublayer_name (VikTrwLayer *vtl, gint sublayer_type, const gchar *name)
1868 {
1869  gint i = 2;
1870  gchar *newname = g_strdup(name);
1871  while ((sublayer_type == VIK_TRW_LAYER_SUBLAYER_TRACK) ?
1872          (void *)vik_trw_layer_get_track(vtl, newname) : (void *)vik_trw_layer_get_waypoint(vtl, newname)) {
1873     gchar *new_newname = g_strdup_printf("%s#%d", name, i);
1874     g_free(newname);
1875     newname = new_newname;
1876     i++;
1877   }
1878   return newname;
1879 }
1880
1881 void vik_trw_layer_filein_add_waypoint ( VikTrwLayer *vtl, gchar *name, VikWaypoint *wp )
1882 {
1883   vik_trw_layer_add_waypoint ( vtl,
1884                         get_new_unique_sublayer_name(vtl, VIK_TRW_LAYER_SUBLAYER_WAYPOINT, name),
1885                         wp );
1886 }
1887 void vik_trw_layer_filein_add_track ( VikTrwLayer *vtl, gchar *name, VikTrack *tr )
1888 {
1889   if ( vtl->magic_scissors_append && vtl->magic_scissors_current_track ) {
1890     vik_track_remove_dup_points ( tr ); /* make "double point" track work to undo */
1891     vik_track_steal_and_append_trackpoints ( vtl->magic_scissors_current_track, tr );
1892     vik_track_free ( tr );
1893     vtl->magic_scissors_append = FALSE; /* this means we have added it */
1894   } else {
1895     gchar *new_name = get_new_unique_sublayer_name(vtl, VIK_TRW_LAYER_SUBLAYER_TRACK, name);
1896     vik_trw_layer_add_track ( vtl, new_name, tr );
1897
1898     if ( vtl->magic_scissors_check_added_track ) {
1899       vik_track_remove_dup_points ( tr ); /* make "double point" track work to undo */
1900       if ( vtl->magic_scissors_added_track_name ) /* for google routes */
1901         g_free ( vtl->magic_scissors_added_track_name );
1902       vtl->magic_scissors_added_track_name = g_strdup(new_name);
1903     }
1904   }
1905 }
1906
1907 static void trw_layer_enum_item ( const gchar *name, GList **tr, GList **l )
1908 {
1909   *l = g_list_append(*l, (gpointer)name);
1910 }
1911
1912 static void trw_layer_move_item ( VikTrwLayer *vtl_src, VikTrwLayer *vtl_dest, gchar *name, gint type )
1913 {
1914   gchar *newname = get_new_unique_sublayer_name(vtl_dest, type, name);
1915   if (type == VIK_TRW_LAYER_SUBLAYER_TRACK) {
1916     VikTrack *t;
1917     t = vik_track_copy(vik_trw_layer_get_track(vtl_src, name));
1918     vik_trw_layer_delete_track(vtl_src, name);
1919     vik_trw_layer_add_track(vtl_dest, newname, t);
1920   }
1921   if (type==VIK_TRW_LAYER_SUBLAYER_WAYPOINT) {
1922     VikWaypoint *w;
1923     w = vik_waypoint_copy(vik_trw_layer_get_waypoint(vtl_src, name));
1924     vik_trw_layer_delete_waypoint(vtl_src, name);
1925     vik_trw_layer_add_waypoint(vtl_dest, newname, w);
1926   }
1927 }
1928
1929 static void trw_layer_drag_drop_request ( VikTrwLayer *vtl_src, VikTrwLayer *vtl_dest, GtkTreeIter *src_item_iter, GtkTreePath *dest_path )
1930 {
1931   VikTreeview *vt = VIK_LAYER(vtl_src)->vt;
1932   gint type = vik_treeview_item_get_data(vt, src_item_iter);
1933
1934   if (!vik_treeview_item_get_pointer(vt, src_item_iter)) {
1935     GList *items = NULL;
1936     GList *iter;
1937
1938     if (type==VIK_TRW_LAYER_SUBLAYER_TRACKS) {
1939       g_hash_table_foreach ( vtl_src->tracks, (GHFunc)trw_layer_enum_item, &items);
1940     }
1941     if (type==VIK_TRW_LAYER_SUBLAYER_WAYPOINTS) {
1942       g_hash_table_foreach ( vtl_src->waypoints, (GHFunc)trw_layer_enum_item, &items);
1943     }
1944
1945     iter = items;
1946     while (iter) {
1947       if (type==VIK_TRW_LAYER_SUBLAYER_TRACKS) {
1948         trw_layer_move_item ( vtl_src, vtl_dest, iter->data, VIK_TRW_LAYER_SUBLAYER_TRACK);
1949       } else {
1950         trw_layer_move_item ( vtl_src, vtl_dest, iter->data, VIK_TRW_LAYER_SUBLAYER_WAYPOINT);
1951       }
1952       iter = iter->next;
1953     }
1954     if (items)
1955       g_list_free(items);
1956   } else {
1957     gchar *name = vik_treeview_item_get_pointer(vt, src_item_iter);
1958     trw_layer_move_item(vtl_src, vtl_dest, name, type);
1959   }
1960 }
1961
1962
1963 gboolean vik_trw_layer_delete_track ( VikTrwLayer *vtl, const gchar *trk_name )
1964 {
1965   VikTrack *t = g_hash_table_lookup ( vtl->tracks, trk_name );
1966   gboolean was_visible = FALSE;
1967   if ( t )
1968   {
1969     GtkTreeIter *it;
1970     was_visible = t->visible;
1971     if ( t == vtl->current_track )
1972       vtl->current_track = NULL;
1973     if ( t == vtl->magic_scissors_current_track )
1974       vtl->magic_scissors_current_track = NULL;
1975
1976     /* could be current_tp, so we have to check */
1977     trw_layer_cancel_tps_of_track ( vtl, trk_name );
1978
1979     g_assert ( ( it = g_hash_table_lookup ( vtl->tracks_iters, trk_name ) ) );
1980     vik_treeview_item_delete ( VIK_LAYER(vtl)->vt, it );
1981     g_hash_table_remove ( vtl->tracks_iters, trk_name );
1982
1983     /* do this last because trk_name may be pointing to actual orig key */
1984     g_hash_table_remove ( vtl->tracks, trk_name );
1985   }
1986   return was_visible;
1987 }
1988
1989 gboolean vik_trw_layer_delete_waypoint ( VikTrwLayer *vtl, const gchar *wp_name )
1990 {
1991   gboolean was_visible = FALSE;
1992   VikWaypoint *wp;
1993
1994   wp = g_hash_table_lookup ( vtl->waypoints, wp_name );
1995   if ( wp ) {
1996     GtkTreeIter *it;
1997
1998     if ( wp == vtl->current_wp ) {
1999       vtl->current_wp = NULL;
2000       vtl->current_wp_name = NULL;
2001       vtl->moving_wp = FALSE;
2002     }
2003
2004     was_visible = wp->visible;
2005     g_assert ( ( it = g_hash_table_lookup ( vtl->waypoints_iters, (gchar *) wp_name ) ) );
2006     vik_treeview_item_delete ( VIK_LAYER(vtl)->vt, it );
2007     g_hash_table_remove ( vtl->waypoints_iters, (gchar *) wp_name );
2008
2009     highest_wp_number_remove_wp(vtl, wp_name);
2010     g_hash_table_remove ( vtl->waypoints, wp_name ); /* last because this frees name */
2011   }
2012
2013   return was_visible;
2014 }
2015
2016 static void remove_item_from_treeview(const gchar *name, GtkTreeIter *it, VikTreeview * vt)
2017 {
2018     vik_treeview_item_delete (vt, it );
2019 }
2020
2021 void vik_trw_layer_delete_all_tracks ( VikTrwLayer *vtl )
2022 {
2023
2024   vtl->current_track = NULL;
2025   vtl->magic_scissors_current_track = NULL;
2026   if (vtl->current_tp_track_name)
2027     trw_layer_cancel_current_tp(vtl, FALSE);
2028   if (vtl->last_tp_track_name)
2029     trw_layer_cancel_last_tp ( vtl );
2030
2031   g_hash_table_foreach(vtl->tracks_iters, (GHFunc) remove_item_from_treeview, VIK_LAYER(vtl)->vt);
2032   g_hash_table_remove_all(vtl->tracks_iters);
2033   g_hash_table_remove_all(vtl->tracks);
2034
2035   /* TODO: only update if the layer is visible (ticked) */
2036   vik_layer_emit_update ( VIK_LAYER(vtl) );
2037 }
2038
2039 void vik_trw_layer_delete_all_waypoints ( VikTrwLayer *vtl )
2040 {
2041   vtl->current_wp = NULL;
2042   vtl->current_wp_name = NULL;
2043   vtl->moving_wp = FALSE;
2044
2045   highest_wp_number_reset(vtl);
2046
2047   g_hash_table_foreach(vtl->waypoints_iters, (GHFunc) remove_item_from_treeview, VIK_LAYER(vtl)->vt);
2048   g_hash_table_remove_all(vtl->waypoints_iters);
2049   g_hash_table_remove_all(vtl->waypoints);
2050
2051   /* TODO: only update if the layer is visible (ticked) */
2052   vik_layer_emit_update ( VIK_LAYER(vtl) );
2053 }
2054
2055 static void trw_layer_delete_item ( gpointer pass_along[5] )
2056 {
2057   VikTrwLayer *vtl = VIK_TRW_LAYER(pass_along[0]);
2058   gboolean was_visible = FALSE;
2059   if ( GPOINTER_TO_INT (pass_along[2]) == VIK_TRW_LAYER_SUBLAYER_WAYPOINT )
2060   {
2061     was_visible = vik_trw_layer_delete_waypoint ( vtl, (gchar *) pass_along[3] );
2062   }
2063   else
2064   {
2065     was_visible = vik_trw_layer_delete_track ( vtl, (gchar *) pass_along[3] );
2066   }
2067   if ( was_visible )
2068     vik_layer_emit_update ( VIK_LAYER(vtl) );
2069 }
2070
2071
2072 static void trw_layer_properties_item ( gpointer pass_along[5] )
2073 {
2074   VikTrwLayer *vtl = VIK_TRW_LAYER(pass_along[0]);
2075   if ( GPOINTER_TO_INT (pass_along[2]) == VIK_TRW_LAYER_SUBLAYER_WAYPOINT )
2076   {
2077     VikWaypoint *wp = g_hash_table_lookup ( vtl->waypoints, pass_along[3] );
2078     if ( wp )
2079     {
2080       if ( a_dialog_new_waypoint ( VIK_GTK_WINDOW_FROM_LAYER(vtl), NULL, wp, NULL, vtl->coord_mode ) )
2081
2082       if ( VIK_LAYER(vtl)->visible )
2083         vik_layer_emit_update ( VIK_LAYER(vtl) );
2084     }
2085   }
2086   else
2087   {
2088     VikTrack *tr = g_hash_table_lookup ( vtl->tracks, pass_along[3] );
2089     if ( tr )
2090     {
2091       vik_trw_layer_propwin_run ( VIK_GTK_WINDOW_FROM_LAYER(vtl),
2092                       vtl, tr,
2093                       pass_along[1], /* vlp */
2094                       pass_along[3]  /* track name */);
2095     }
2096   }
2097 }
2098
2099 static void goto_coord ( VikLayersPanel *vlp, const VikCoord *coord )
2100 {
2101   vik_viewport_set_center_coord ( vik_layers_panel_get_viewport(vlp), coord );
2102   vik_layers_panel_emit_update ( vlp );
2103 }
2104
2105 static void trw_layer_goto_track_startpoint ( gpointer pass_along[5] )
2106 {
2107   GList *trps = ((VikTrack *) g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] ))->trackpoints;
2108   if ( trps && trps->data )
2109     goto_coord ( VIK_LAYERS_PANEL(pass_along[1]), &(((VikTrackpoint *) trps->data)->coord));
2110 }
2111
2112 static void trw_layer_goto_track_center ( gpointer pass_along[5] )
2113 {
2114   /* FIXME: get this into viktrack.c, and should be ->trackpoints right? */
2115   GList **trps = g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] );
2116   if ( trps && *trps )
2117   {
2118     struct LatLon average, maxmin[2] = { {0,0}, {0,0} };
2119     VikCoord coord;
2120     trw_layer_find_maxmin_tracks ( NULL, trps, maxmin );
2121     average.lat = (maxmin[0].lat+maxmin[1].lat)/2;
2122     average.lon = (maxmin[0].lon+maxmin[1].lon)/2;
2123     vik_coord_load_from_latlon ( &coord, VIK_TRW_LAYER(pass_along[0])->coord_mode, &average );
2124     goto_coord ( VIK_LAYERS_PANEL(pass_along[1]), &coord);
2125   }
2126 }
2127
2128 static void trw_layer_extend_track_end ( gpointer pass_along[6] )
2129 {
2130   VikTrwLayer *vtl = VIK_TRW_LAYER(pass_along[0]);
2131   VikTrack *track = g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] );
2132
2133   vtl->current_track = track;
2134   vik_window_enable_layer_tool ( VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(vtl)), VIK_LAYER_TRW, TOOL_CREATE_TRACK);
2135
2136   if ( track->trackpoints )
2137     goto_coord ( VIK_LAYERS_PANEL(pass_along[1]), &(((VikTrackpoint *)g_list_last(track->trackpoints)->data)->coord) );
2138 }
2139
2140 /**
2141  * extend a track using magic scissors
2142  */
2143 static void trw_layer_extend_track_end_ms ( gpointer pass_along[6] )
2144 {
2145   VikTrwLayer *vtl = VIK_TRW_LAYER(pass_along[0]);
2146   VikTrack *track = g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] );
2147   VikCoord last_coord = (((VikTrackpoint *)g_list_last(track->trackpoints)->data)->coord);
2148
2149   vik_window_enable_layer_tool ( VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(vtl)), VIK_LAYER_TRW, NUM_TOOLS );
2150   vtl->magic_scissors_coord =  last_coord;
2151   vtl->magic_scissors_current_track = track;
2152
2153   if ( track->trackpoints )
2154     goto_coord ( VIK_LAYERS_PANEL(pass_along[1]), &last_coord) ;
2155
2156 }
2157
2158 static void trw_layer_apply_dem_data ( gpointer pass_along[6] )
2159 {
2160   /* TODO: check & warn if no DEM data, or no applicable DEM data. */
2161   /* Also warn if overwrite old elevation data */
2162   VikTrack *track = (VikTrack *) g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] );
2163
2164   vik_track_apply_dem_data ( track );
2165 }
2166
2167 static void trw_layer_goto_track_endpoint ( gpointer pass_along[6] )
2168 {
2169   GList *trps = ((VikTrack *) g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] ))->trackpoints;
2170   if ( !trps )
2171     return;
2172   trps = g_list_last(trps);
2173   goto_coord ( VIK_LAYERS_PANEL(pass_along[1]), &(((VikTrackpoint *) trps->data)->coord));
2174 }
2175
2176
2177 /*************************************
2178  * merge/split by time routines
2179  *************************************/
2180
2181 /* called for each key in track hash table.
2182  * If the current track has time stamp, add it to the result,
2183  * except the one pointed by "exclude".
2184  * set exclude to NULL if there is no exclude to check.
2185  * Not that result is in reverse (for performance reason).
2186  */
2187 typedef struct {
2188   GList **result;
2189   GList  *exclude;
2190 } twt_udata;
2191 static void find_tracks_with_timestamp(gpointer key, gpointer value, gpointer udata)
2192 {
2193   twt_udata *user_data = udata;
2194   VikTrackpoint *p1, *p2;
2195
2196   if (VIK_TRACK(value)->trackpoints == user_data->exclude) {
2197     return;
2198   }
2199
2200   if (VIK_TRACK(value)->trackpoints) {
2201     p1 = VIK_TRACKPOINT(VIK_TRACK(value)->trackpoints->data);
2202     p2 = VIK_TRACKPOINT(g_list_last(VIK_TRACK(value)->trackpoints)->data);
2203
2204     if (!p1->has_timestamp || !p2->has_timestamp) {
2205       g_print("no timestamp\n");
2206       return;
2207     }
2208
2209   }
2210
2211   *(user_data->result) = g_list_prepend(*(user_data->result), key);
2212 }
2213
2214 /* called for each key in track hash table. if original track user_data[1] is close enough
2215  * to the passed one, add it to list in user_data[0]
2216  */
2217 static void find_nearby_track(gpointer key, gpointer value, gpointer user_data)
2218 {
2219   time_t t1, t2;
2220   VikTrackpoint *p1, *p2;
2221
2222   GList **nearby_tracks = ((gpointer *)user_data)[0];
2223   GList *orig_track = ((gpointer *)user_data)[1];
2224   guint thr = GPOINTER_TO_UINT (((gpointer *)user_data)[2]);
2225
2226   /* outline:
2227    * detect reasons for not merging, and return
2228    * if no reason is found not to merge, then do it.
2229    */
2230
2231   if (VIK_TRACK(value)->trackpoints == orig_track) {
2232     return;
2233   }
2234
2235   t1 = VIK_TRACKPOINT(orig_track->data)->timestamp;
2236   t2 = VIK_TRACKPOINT(g_list_last(orig_track)->data)->timestamp;
2237
2238   if (VIK_TRACK(value)->trackpoints) {
2239     p1 = VIK_TRACKPOINT(VIK_TRACK(value)->trackpoints->data);
2240     p2 = VIK_TRACKPOINT(g_list_last(VIK_TRACK(value)->trackpoints)->data);
2241
2242     if (!p1->has_timestamp || !p2->has_timestamp) {
2243       g_print("no timestamp\n");
2244       return;
2245     }
2246
2247     /*  g_print("Got track named %s, times %d, %d\n", (gchar *)key, p1->timestamp, p2->timestamp); */
2248     if (! (abs(t1 - p2->timestamp) < thr*60 ||
2249         /*  p1 p2      t1 t2 */
2250            abs(p1->timestamp - t2) < thr*60)
2251         /*  t1 t2      p1 p2 */
2252         ) {
2253       return;
2254     }
2255   }
2256
2257   *nearby_tracks = g_list_prepend(*nearby_tracks, key);
2258 }
2259
2260 /* comparison function used to sort tracks; a and b are hash table keys */
2261 static gint track_compare(gconstpointer a, gconstpointer b, gpointer user_data)
2262 {
2263   GHashTable *tracks = user_data;
2264   time_t t1, t2;
2265
2266   t1 = VIK_TRACKPOINT(VIK_TRACK(g_hash_table_lookup(tracks, a))->trackpoints->data)->timestamp;
2267   t2 = VIK_TRACKPOINT(VIK_TRACK(g_hash_table_lookup(tracks, b))->trackpoints->data)->timestamp;
2268
2269   if (t1 < t2) return -1;
2270   if (t1 > t2) return 1;
2271   return 0;
2272 }
2273
2274 /* comparison function used to sort trackpoints */
2275 static gint trackpoint_compare(gconstpointer a, gconstpointer b)
2276 {
2277   time_t t1 = VIK_TRACKPOINT(a)->timestamp, t2 = VIK_TRACKPOINT(b)->timestamp;
2278
2279   if (t1 < t2) return -1;
2280   if (t1 > t2) return 1;
2281   return 0;
2282 }
2283
2284 static void trw_layer_merge_with_other ( gpointer pass_along[6] )
2285 {
2286   VikTrwLayer *vtl = (VikTrwLayer *)pass_along[0];
2287   gchar *orig_track_name = pass_along[3];
2288   GList *tracks_with_timestamp = NULL;
2289   VikTrack *track = (VikTrack *) g_hash_table_lookup ( vtl->tracks, orig_track_name );
2290
2291   if (track->trackpoints &&
2292       !VIK_TRACKPOINT(track->trackpoints->data)->has_timestamp) {
2293     a_dialog_error_msg(VIK_GTK_WINDOW_FROM_LAYER(vtl), _("Failed. This track does not have timestamp"));
2294     return;
2295   }
2296
2297   if (1) {
2298
2299     twt_udata udata;
2300     udata.result = &tracks_with_timestamp;
2301     udata.exclude = track->trackpoints;
2302     g_hash_table_foreach(vtl->tracks, find_tracks_with_timestamp, (gpointer)&udata);
2303     tracks_with_timestamp = g_list_reverse(tracks_with_timestamp);
2304   }
2305
2306   if (!tracks_with_timestamp) {
2307     a_dialog_error_msg(VIK_GTK_WINDOW_FROM_LAYER(vtl), _("Failed. No other track in this layer has timestamp"));
2308     return;
2309   }
2310
2311   GList *merge_list = a_dialog_select_from_list(VIK_GTK_WINDOW_FROM_LAYER(vtl),
2312       vtl->tracks, tracks_with_timestamp, TRUE,
2313       _("Merge with..."), _("Select track to merge with"));
2314   g_list_free(tracks_with_timestamp);
2315
2316   if (merge_list)
2317   {
2318     GList *l;
2319     for (l = merge_list; l != NULL; l = g_list_next(l)) {
2320       VikTrack *merge_track = (VikTrack *) g_hash_table_lookup (vtl->tracks, l->data );
2321       if (merge_track) {
2322         track->trackpoints = g_list_concat(track->trackpoints, merge_track->trackpoints);
2323         merge_track->trackpoints = NULL;
2324         vik_trw_layer_delete_track(vtl, l->data);
2325         track->trackpoints = g_list_sort(track->trackpoints, trackpoint_compare);
2326       }
2327     }
2328     /* TODO: free data before free merge_list */
2329     for (l = merge_list; l != NULL; l = g_list_next(l))
2330       g_free(l->data);
2331     g_list_free(merge_list);
2332     vik_layer_emit_update( VIK_LAYER(vtl) );
2333   }
2334 }
2335
2336 /* merge by time routine */
2337 static void trw_layer_merge_by_timestamp ( gpointer pass_along[6] )
2338 {
2339   VikTrwLayer *vtl = (VikTrwLayer *)pass_along[0];
2340   gchar *orig_track_name = strdup(pass_along[3]);
2341
2342   time_t t1, t2;
2343   GList *nearby_tracks;
2344   VikTrack *track;
2345   GList *trps;
2346   static  guint thr = 1;
2347   guint track_count = 0;
2348
2349   if (!a_dialog_time_threshold(VIK_GTK_WINDOW_FROM_LAYER(vtl),
2350                                _("Merge Threshold..."),
2351                                _("Merge when time between tracks less than:"),
2352                                &thr)) {
2353     free(orig_track_name);
2354     return;
2355   }
2356
2357   /* merge tracks until we can't */
2358   nearby_tracks = NULL;
2359   do {
2360     gpointer params[3];
2361
2362     track = (VikTrack *) g_hash_table_lookup ( vtl->tracks, orig_track_name );
2363     trps = track->trackpoints;
2364     if ( !trps )
2365       return;
2366
2367
2368     if (nearby_tracks) {
2369       g_list_free(nearby_tracks);
2370       nearby_tracks = NULL;
2371     }
2372
2373     t1 = ((VikTrackpoint *)trps->data)->timestamp;
2374     t2 = ((VikTrackpoint *)g_list_last(trps)->data)->timestamp;
2375
2376     /*    g_print("Original track times: %d and %d\n", t1, t2);  */
2377     params[0] = &nearby_tracks;
2378     params[1] = trps;
2379     params[2] = GUINT_TO_POINTER (thr);
2380
2381     /* get a list of adjacent-in-time tracks */
2382     g_hash_table_foreach(vtl->tracks, find_nearby_track, (gpointer)params);
2383
2384     /* add original track */
2385     nearby_tracks = g_list_prepend(nearby_tracks, orig_track_name);
2386
2387     /* merge them */
2388     {
2389 #define get_track(x) VIK_TRACK(g_hash_table_lookup(vtl->tracks, (gchar *)((x)->data)))
2390 #define get_first_trackpoint(x) VIK_TRACKPOINT(get_track(x)->trackpoints->data)
2391 #define get_last_trackpoint(x) VIK_TRACKPOINT(g_list_last(get_track(x)->trackpoints)->data)
2392       GList *l = nearby_tracks;
2393       VikTrack *tr = vik_track_new();
2394       tr->visible = track->visible;
2395       track_count = 0;
2396       while (l) {
2397         /*
2398         time_t t1, t2;
2399         t1 = get_first_trackpoint(l)->timestamp;
2400         t2 = get_last_trackpoint(l)->timestamp;
2401         g_print("     %20s: track %d - %d\n", (char *)l->data, (int)t1, (int)t2);
2402         */
2403
2404
2405         /* remove trackpoints from merged track, delete track */
2406         tr->trackpoints = g_list_concat(tr->trackpoints, get_track(l)->trackpoints);
2407         get_track(l)->trackpoints = NULL;
2408         vik_trw_layer_delete_track(vtl, l->data);
2409
2410         track_count ++;
2411         l = g_list_next(l);
2412       }
2413       tr->trackpoints = g_list_sort(tr->trackpoints, trackpoint_compare);
2414       vik_trw_layer_add_track(vtl, strdup(orig_track_name), tr);
2415
2416 #undef get_first_trackpoint
2417 #undef get_last_trackpoint
2418 #undef get_track
2419     }
2420   } while (track_count > 1);
2421   g_list_free(nearby_tracks);
2422   free(orig_track_name);
2423   vik_layer_emit_update( VIK_LAYER(vtl) );
2424 }
2425
2426 /* split by time routine */
2427 static void trw_layer_split_by_timestamp ( gpointer pass_along[6] )
2428 {
2429   VikTrack *track = (VikTrack *) g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] );
2430   GList *trps = track->trackpoints;
2431   GList *iter;
2432   GList *newlists = NULL;
2433   GList *newtps = NULL;
2434   guint i;
2435   static guint thr = 1;
2436
2437   time_t ts, prev_ts;
2438
2439   if ( !trps )
2440     return;
2441
2442   if (!a_dialog_time_threshold(VIK_GTK_WINDOW_FROM_LAYER(pass_along[0]),
2443                                _("Split Threshold..."),
2444                                _("Split when time between trackpoints exceeds:"),
2445                                &thr)) {
2446     return;
2447   }
2448
2449   /* iterate through trackpoints, and copy them into new lists without touching original list */
2450   prev_ts = VIK_TRACKPOINT(trps->data)->timestamp;
2451   iter = trps;
2452
2453   while (iter) {
2454     ts = VIK_TRACKPOINT(iter->data)->timestamp;
2455     if (ts < prev_ts) {
2456       g_print("panic: ts < prev_ts: this should never happen!\n");
2457       return;
2458     }
2459     if (ts - prev_ts > thr*60) {
2460       /* flush accumulated trackpoints into new list */
2461       newlists = g_list_prepend(newlists, g_list_reverse(newtps));
2462       newtps = NULL;
2463     }
2464
2465     /* accumulate trackpoint copies in newtps, in reverse order */
2466     newtps = g_list_prepend(newtps, vik_trackpoint_copy(VIK_TRACKPOINT(iter->data)));
2467     prev_ts = ts;
2468     iter = g_list_next(iter);
2469   }
2470   if (newtps) {
2471       newlists = g_list_prepend(newlists, g_list_reverse(newtps));
2472   }
2473
2474   /* put lists of trackpoints into tracks */
2475   iter = newlists;
2476   i = 1;
2477   while (iter) {
2478     gchar *new_tr_name;
2479     VikTrack *tr;
2480
2481     tr = vik_track_new();
2482     tr->visible = track->visible;
2483     tr->trackpoints = (GList *)(iter->data);
2484
2485     new_tr_name = g_strdup_printf("%s #%d", (gchar *) pass_along[3], i++);
2486     vik_trw_layer_add_track(VIK_TRW_LAYER(pass_along[0]), new_tr_name, tr);
2487     /*    g_print("adding track %s, times %d - %d\n", new_tr_name, VIK_TRACKPOINT(tr->trackpoints->data)->timestamp,
2488           VIK_TRACKPOINT(g_list_last(tr->trackpoints)->data)->timestamp);*/
2489
2490     iter = g_list_next(iter);
2491   }
2492   g_list_free(newlists);
2493   vik_trw_layer_delete_track(VIK_TRW_LAYER(pass_along[0]), (gchar *)pass_along[3]);
2494   vik_layer_emit_update(VIK_LAYER(pass_along[0]));
2495 }
2496
2497 /* end of split/merge routines */
2498
2499
2500 static void trw_layer_goto_waypoint ( gpointer pass_along[5] )
2501 {
2502   VikWaypoint *wp = g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->waypoints, pass_along[3] );
2503   if ( wp )
2504     goto_coord ( VIK_LAYERS_PANEL(pass_along[1]), &(wp->coord) );
2505 }
2506
2507 static void trw_layer_waypoint_gc_webpage ( gpointer pass_along[5] )
2508 {
2509   gchar *webpage = g_strdup_printf("http://www.geocaching.com/seek/cache_details.aspx?wp=%s", (gchar *) pass_along[3] );
2510   open_url(VIK_GTK_WINDOW_FROM_LAYER(VIK_LAYER(pass_along[0])), webpage);
2511   g_free ( webpage );
2512 }
2513
2514 const gchar *vik_trw_layer_sublayer_rename_request ( VikTrwLayer *l, const gchar *newname, gpointer vlp, gint subtype, gpointer sublayer, GtkTreeIter *iter )
2515 {
2516   if ( subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINT )
2517   {
2518     gchar *rv;
2519     VikWaypoint *wp;
2520
2521     if (strcmp(newname, sublayer) == 0 )
2522       return NULL;
2523
2524     if (strcasecmp(newname, sublayer)) { /* Not just changing case */
2525       if (g_hash_table_lookup( l->waypoints, newname))
2526       {
2527         a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(l), _("Waypoint Already Exists") );
2528         return NULL;
2529       }
2530     }
2531
2532     iter = g_hash_table_lookup ( l->waypoints_iters, sublayer );
2533     g_hash_table_steal ( l->waypoints_iters, sublayer );
2534
2535     wp = vik_waypoint_copy ( VIK_WAYPOINT(g_hash_table_lookup ( l->waypoints, sublayer )) );
2536     highest_wp_number_remove_wp(l, sublayer);
2537     g_hash_table_remove ( l->waypoints, sublayer );
2538
2539     rv = g_strdup(newname);
2540
2541     vik_treeview_item_set_pointer ( VIK_LAYER(l)->vt, iter, rv );
2542
2543     highest_wp_number_add_wp(l, rv);
2544     g_hash_table_insert ( l->waypoints, rv, wp );
2545     g_hash_table_insert ( l->waypoints_iters, rv, iter );
2546
2547     /* it hasn't been updated yet so we pass new name */
2548 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
2549     vik_treeview_sublayer_realphabetize ( VIK_LAYER(l)->vt, iter, rv );
2550 #endif
2551
2552     vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vlp) );
2553     return rv;
2554   }
2555   if ( subtype == VIK_TRW_LAYER_SUBLAYER_TRACK )
2556   {
2557     gchar *rv;
2558     VikTrack *tr;
2559     GtkTreeIter *iter;
2560     gchar *orig_key;
2561
2562     if (strcmp(newname, sublayer) == 0)
2563       return NULL;
2564
2565     if (strcasecmp(newname, sublayer)) { /* Not just changing case */
2566       if (g_hash_table_lookup( l->tracks, newname))
2567       {
2568         a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(l), _("Track Already Exists") );
2569         return NULL;
2570       }
2571     }
2572
2573     g_hash_table_lookup_extended ( l->tracks, sublayer, (void *)&orig_key, (void *)&tr );
2574     g_hash_table_steal ( l->tracks, sublayer );
2575
2576     iter = g_hash_table_lookup ( l->tracks_iters, sublayer );
2577     g_hash_table_steal ( l->tracks_iters, sublayer );
2578
2579     rv = g_strdup(newname);
2580
2581     vik_treeview_item_set_pointer ( VIK_LAYER(l)->vt, iter, rv );
2582
2583     g_hash_table_insert ( l->tracks, rv, tr );
2584     g_hash_table_insert ( l->tracks_iters, rv, iter );
2585
2586     /* don't forget about current_tp_track_name, update that too */
2587     if ( l->current_tp_track_name && g_strcasecmp(orig_key,l->current_tp_track_name) == 0 )
2588     {
2589       l->current_tp_track_name = rv;
2590       if ( l->tpwin )
2591         vik_trw_layer_tpwin_set_track_name ( l->tpwin, rv );
2592     }
2593     else if ( l->last_tp_track_name && g_strcasecmp(orig_key,l->last_tp_track_name) == 0 )
2594       l->last_tp_track_name = rv;
2595
2596     g_free ( orig_key );
2597
2598 #ifdef VIK_CONFIG_ALPHABETIZED_TRW
2599     vik_treeview_sublayer_realphabetize ( VIK_LAYER(l)->vt, iter, rv );
2600 #endif
2601
2602     vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vlp) );
2603     return rv;
2604   }
2605   return NULL;
2606 }
2607
2608 static gboolean is_valid_geocache_name ( gchar *str )
2609 {
2610   gint len = strlen ( str );
2611   return len >= 3 && len <= 7 && str[0] == 'G' && str[1] == 'C' && isalnum(str[2]) && (len < 4 || isalnum(str[3])) && (len < 5 || isalnum(str[4])) && (len < 6 || isalnum(str[5])) && (len < 7 || isalnum(str[6]));
2612 }
2613
2614 static void trw_layer_track_use_with_filter ( gpointer *pass_along )
2615 {
2616   gchar *track_name = (gchar *) pass_along[3];
2617   VikTrack *tr = g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, track_name );
2618   a_acquire_set_filter_track ( tr, track_name );
2619 }
2620
2621 static gboolean is_valid_google_route ( VikTrwLayer *vtl, const gchar *track_name )
2622 {
2623   VikTrack *tr = g_hash_table_lookup ( vtl->tracks, track_name );
2624   return ( tr && tr->comment && strlen(tr->comment) > 7 && !strncmp(tr->comment, "from:", 5) );
2625 }
2626
2627 static void trw_layer_track_google_route_webpage( gpointer *pass_along )
2628 {
2629   gchar *track_name = (gchar *) pass_along[3];
2630   VikTrack *tr = g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, track_name );
2631   if ( tr ) {
2632     gchar *escaped = uri_escape ( tr->comment );
2633     gchar *webpage = g_strdup_printf("http://maps.google.com/maps?f=q&hl=en&q=%s", escaped );
2634     open_url(VIK_GTK_WINDOW_FROM_LAYER(VIK_LAYER(pass_along[0])), webpage);
2635     g_free ( escaped );
2636     g_free ( webpage );
2637   }
2638 }
2639
2640 /* vlp can be NULL if necessary - i.e. right-click from a tool -- but be careful, some functions may try to use it */
2641 gboolean vik_trw_layer_sublayer_add_menu_items ( VikTrwLayer *l, GtkMenu *menu, gpointer vlp, gint subtype, gpointer sublayer, GtkTreeIter *iter )
2642 {
2643   static GtkTreeIter staticiter;
2644   static gpointer pass_along[5];
2645   GtkWidget *item;
2646   gboolean rv = FALSE;
2647
2648   pass_along[0] = l;
2649   pass_along[1] = vlp;
2650   pass_along[2] = GINT_TO_POINTER (subtype);
2651   pass_along[3] = sublayer;
2652   staticiter = *iter; /* will exist after function has ended */
2653   pass_along[4] = &staticiter;
2654
2655   if ( subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINT || subtype == VIK_TRW_LAYER_SUBLAYER_TRACK )
2656   {
2657     rv = TRUE;
2658
2659     item = gtk_image_menu_item_new_from_stock ( GTK_STOCK_PROPERTIES, NULL );
2660     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_properties_item), pass_along );
2661     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2662     gtk_widget_show ( item );
2663
2664     if (subtype == VIK_TRW_LAYER_SUBLAYER_TRACK) {
2665       VikTrwLayer *vtl = l;
2666       VikTrack *tr = g_hash_table_lookup ( vtl->tracks, sublayer );
2667       if (tr && tr->property_dialog)
2668         gtk_widget_set_sensitive(GTK_WIDGET(item), FALSE );
2669     }
2670
2671     item = gtk_image_menu_item_new_from_stock ( GTK_STOCK_CUT, NULL );
2672     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_cut_item_cb), pass_along );
2673     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2674     gtk_widget_show ( item );
2675
2676     item = gtk_image_menu_item_new_from_stock ( GTK_STOCK_COPY, NULL );
2677     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_copy_item_cb), pass_along );
2678     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2679     gtk_widget_show ( item );
2680
2681     item = gtk_image_menu_item_new_from_stock ( GTK_STOCK_DELETE, NULL );
2682     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_delete_item), pass_along );
2683     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2684     gtk_widget_show ( item );
2685
2686     if ( subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINT )
2687     {
2688       /* could be a right-click using the tool */
2689       if ( vlp != NULL ) {
2690         item = gtk_menu_item_new_with_label ( _("Goto") );
2691         g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_goto_waypoint), pass_along );
2692         gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2693         gtk_widget_show ( item );
2694       }
2695
2696       if ( is_valid_geocache_name ( (gchar *) sublayer ) )
2697       {
2698         item = gtk_menu_item_new_with_label ( _("Visit Geocache Webpage") );
2699         g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_waypoint_gc_webpage), pass_along );
2700         gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2701         gtk_widget_show ( item );
2702       }
2703
2704     }
2705   }
2706
2707   if ( subtype == VIK_TRW_LAYER_SUBLAYER_TRACK )
2708   {
2709     item = gtk_menu_item_new ();
2710     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2711     gtk_widget_show ( item );
2712
2713     item = gtk_menu_item_new_with_label ( _("Goto Startpoint") );
2714     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_goto_track_startpoint), pass_along );
2715     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2716     gtk_widget_show ( item );
2717
2718     item = gtk_menu_item_new_with_label ( _("Goto \"Center\"") );
2719     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_goto_track_center), pass_along );
2720     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2721     gtk_widget_show ( item );
2722
2723     item = gtk_menu_item_new_with_label ( _("Goto Endpoint") );
2724     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_goto_track_endpoint), pass_along );
2725     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2726     gtk_widget_show ( item );
2727
2728     item = gtk_menu_item_new_with_label ( _("Merge By Time") );
2729     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_merge_by_timestamp), pass_along );
2730     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2731     gtk_widget_show ( item );
2732
2733     item = gtk_menu_item_new_with_label ( _("Merge With Other Tracks...") );
2734     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_merge_with_other), pass_along );
2735     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2736     gtk_widget_show ( item );
2737
2738     item = gtk_menu_item_new_with_label ( _("Split By Time") );
2739     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_split_by_timestamp), pass_along );
2740     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2741     gtk_widget_show ( item );
2742
2743     item = gtk_menu_item_new_with_label ( _("Download maps along track...") );
2744     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_download_map_along_track_cb), pass_along );
2745     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2746     gtk_widget_show ( item );
2747
2748     item = gtk_menu_item_new_with_label ( _("Apply DEM Data") );
2749     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_apply_dem_data), pass_along );
2750     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2751     gtk_widget_show ( item );
2752
2753     item = gtk_menu_item_new_with_label ( _("Extend track end") );
2754     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_extend_track_end), pass_along );
2755     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2756     gtk_widget_show ( item );
2757
2758     item = gtk_menu_item_new_with_label ( _("Extend using magic scissors") );
2759     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_extend_track_end_ms), pass_along );
2760     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2761     gtk_widget_show ( item );
2762
2763 #ifdef VIK_CONFIG_OPENSTREETMAP
2764     item = gtk_menu_item_new_with_label ( _("Upload to OSM") );
2765     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(osm_traces_upload_track_cb), pass_along );
2766     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2767     gtk_widget_show ( item );
2768 #endif
2769
2770     if ( is_valid_google_route ( l, (gchar *) sublayer ) )
2771     {
2772       item = gtk_menu_item_new_with_label ( _("View Google Directions") );
2773       g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_track_google_route_webpage), pass_along );
2774       gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2775       gtk_widget_show ( item );
2776     }
2777
2778     item = gtk_menu_item_new_with_label ( _("Use with filter") );
2779     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_track_use_with_filter), pass_along );
2780     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2781     gtk_widget_show ( item );
2782
2783     item = a_acquire_track_menu ( VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(l)), vlp,
2784         vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vlp)),
2785         g_hash_table_lookup ( l->tracks, (gchar *) sublayer ) );
2786     if ( item ) {
2787       gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
2788       gtk_widget_show ( item );
2789     }
2790   }
2791
2792   if ( vlp && (subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINTS || subtype == VIK_TRW_LAYER_SUBLAYER_WAYPOINT) )
2793   {
2794     item = gtk_menu_item_new ();
2795     gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
2796     gtk_widget_show ( item );
2797
2798     item = gtk_menu_item_new_with_label ( _("New Waypoint") );
2799     g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(trw_layer_new_wp), pass_along );
2800     gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
2801     gtk_widget_show ( item );
2802   }
2803
2804   return rv;
2805 }
2806
2807
2808 /* to be called when last_tpl no long exists. */
2809 static void trw_layer_cancel_last_tp ( VikTrwLayer *vtl )
2810 {
2811   if ( vtl->tpwin ) /* can't join with a non-existant TP. */
2812     vik_trw_layer_tpwin_disable_join ( vtl->tpwin );
2813   vtl->last_tpl = NULL;
2814   vtl->last_tp_track_name = NULL;
2815 }
2816
2817 static void trw_layer_cancel_current_tp ( VikTrwLayer *vtl, gboolean destroy )
2818 {
2819   if ( vtl->tpwin )
2820   {
2821     if ( destroy)
2822     {
2823       gtk_widget_destroy ( GTK_WIDGET(vtl->tpwin) );
2824       vtl->tpwin = NULL;
2825     }
2826     else
2827       vik_trw_layer_tpwin_set_empty ( vtl->tpwin );
2828   }
2829   if ( vtl->current_tpl )
2830   {
2831     vtl->current_tpl = NULL;
2832     vtl->current_tp_track_name = NULL;
2833     vik_layer_emit_update(VIK_LAYER(vtl));
2834   }
2835 }
2836
2837 static void trw_layer_tpwin_response ( VikTrwLayer *vtl, gint response )
2838 {
2839   g_assert ( vtl->tpwin != NULL );
2840   if ( response == VIK_TRW_LAYER_TPWIN_CLOSE )
2841     trw_layer_cancel_current_tp ( vtl, TRUE );
2842   else if ( response == VIK_TRW_LAYER_TPWIN_SPLIT && vtl->current_tpl->next && vtl->current_tpl->prev )
2843   {
2844     gchar *name;
2845     if ( ( name = a_dialog_new_track ( GTK_WINDOW(vtl->tpwin), vtl->tracks, NULL ) ) )
2846     {
2847       VikTrack *tr = vik_track_new ();
2848       GList *newglist = g_list_alloc ();
2849       newglist->prev = NULL;
2850       newglist->next = vtl->current_tpl->next;
2851       newglist->data = vik_trackpoint_copy(VIK_TRACKPOINT(vtl->current_tpl->data));
2852       tr->trackpoints = newglist;
2853
2854       vtl->current_tpl->next->prev = newglist; /* end old track here */
2855       vtl->current_tpl->next = NULL;
2856
2857       vtl->current_tpl = newglist; /* change tp to first of new track. */
2858       vtl->current_tp_track_name = name;
2859
2860       vik_trw_layer_tpwin_set_tp ( vtl->tpwin, vtl->current_tpl, vtl->current_tp_track_name );
2861
2862       tr->visible = TRUE;
2863
2864       vik_trw_layer_add_track ( vtl, name, tr );
2865       vik_layer_emit_update(VIK_LAYER(vtl));
2866     }
2867   }
2868   else if ( response == VIK_TRW_LAYER_TPWIN_DELETE )
2869   {
2870     VikTrack *tr = g_hash_table_lookup ( vtl->tracks, vtl->current_tp_track_name );
2871     GList *new_tpl;
2872     g_assert(tr != NULL);
2873
2874     /* can't join with a non-existent trackpoint */
2875     vtl->last_tpl = NULL;
2876     vtl->last_tp_track_name = NULL;
2877
2878     if ( (new_tpl = vtl->current_tpl->next) || (new_tpl = vtl->current_tpl->prev) )
2879     {
2880       if ( VIK_TRACKPOINT(vtl->current_tpl->data)->newsegment && vtl->current_tpl->next )
2881         VIK_TRACKPOINT(vtl->current_tpl->next->data)->newsegment = TRUE; /* don't concat segments on del */
2882
2883       tr->trackpoints = g_list_remove_link ( tr->trackpoints, vtl->current_tpl ); /* this nulls current_tpl->prev and next */
2884
2885       /* at this point the old trackpoint exists, but the list links are correct (new), so it is safe to do this. */
2886       vik_trw_layer_tpwin_set_tp ( vtl->tpwin, new_tpl, vtl->current_tp_track_name );
2887
2888       trw_layer_cancel_last_tp ( vtl );
2889
2890       g_free ( vtl->current_tpl->data ); /* TODO: vik_trackpoint_free() */
2891       g_list_free_1 ( vtl->current_tpl );
2892       vtl->current_tpl = new_tpl;
2893       vik_layer_emit_update(VIK_LAYER(vtl));
2894     }
2895     else
2896     {
2897       tr->trackpoints = g_list_remove_link ( tr->trackpoints, vtl->current_tpl );
2898       g_free ( vtl->current_tpl->data ); /* TODO longone: vik_trackpoint_new() and vik_trackpoint_free() */
2899       g_list_free_1 ( vtl->current_tpl );
2900       trw_layer_cancel_current_tp ( vtl, FALSE );
2901     }
2902   }
2903   else if ( response == VIK_TRW_LAYER_TPWIN_FORWARD && vtl->current_tpl->next )
2904   {
2905     vtl->last_tpl = vtl->current_tpl;
2906     vik_trw_layer_tpwin_set_tp ( vtl->tpwin, vtl->current_tpl = vtl->current_tpl->next, vtl->current_tp_track_name );
2907     vik_layer_emit_update(VIK_LAYER(vtl)); /* TODO longone: either move or only update if tp is inside drawing window */
2908   }
2909   else if ( response == VIK_TRW_LAYER_TPWIN_BACK && vtl->current_tpl->prev )
2910   {
2911     vtl->last_tpl = vtl->current_tpl;
2912     vik_trw_layer_tpwin_set_tp ( vtl->tpwin, vtl->current_tpl = vtl->current_tpl->prev, vtl->current_tp_track_name );
2913     vik_layer_emit_update(VIK_LAYER(vtl));
2914   }
2915   else if ( response == VIK_TRW_LAYER_TPWIN_JOIN )
2916   {
2917     VikTrack *tr1 = g_hash_table_lookup ( vtl->tracks, vtl->last_tp_track_name );
2918     VikTrack *tr2 = g_hash_table_lookup ( vtl->tracks, vtl->current_tp_track_name );
2919
2920     VikTrack *tr_first = tr1, *tr_last = tr2;
2921
2922     gchar *tmp;
2923
2924     if ( (!vtl->last_tpl->next) && (!vtl->current_tpl->next) ) /* both endpoints */
2925       vik_track_reverse ( tr2 ); /* reverse the second, that way second track clicked will be later. */
2926     else if ( (!vtl->last_tpl->prev) && (!vtl->current_tpl->prev) )
2927       vik_track_reverse ( tr1 );
2928     else if ( (!vtl->last_tpl->prev) && (!vtl->current_tpl->next) ) /* clicked startpoint, then endpoint -- concat end to start */
2929     {
2930       tr_first = tr2;
2931       tr_last = tr1;
2932     }
2933     /* default -- clicked endpoint then startpoint -- connect endpoint to startpoint */
2934
2935     if ( tr_last->trackpoints ) /* deleting this part here joins them into 1 segmented track. useful but there's no place in the UI for this feature. segments should be deprecated anyway. */
2936       VIK_TRACKPOINT(tr_last->trackpoints->data)->newsegment = FALSE;
2937     tr1->trackpoints = g_list_concat ( tr_first->trackpoints, tr_last->trackpoints );
2938     tr2->trackpoints = NULL;
2939
2940     tmp = vtl->current_tp_track_name;
2941
2942     vtl->current_tp_track_name = vtl->last_tp_track_name; /* current_tp stays the same (believe it or not!) */
2943     vik_trw_layer_tpwin_set_tp ( vtl->tpwin, vtl->current_tpl, vtl->current_tp_track_name );
2944
2945     /* if we did this before, trw_layer_delete_track would have canceled the current tp because
2946      * it was the current track. canceling the current tp would have set vtl->current_tpl to NULL */
2947     vik_trw_layer_delete_track ( vtl, tmp );
2948
2949     trw_layer_cancel_last_tp ( vtl ); /* same TP, can't join. */
2950     vik_layer_emit_update(VIK_LAYER(vtl));
2951   }
2952   else if ( response == VIK_TRW_LAYER_TPWIN_DATA_CHANGED )
2953     vik_layer_emit_update (VIK_LAYER(vtl));
2954 }
2955
2956 static void trw_layer_tpwin_init ( VikTrwLayer *vtl )
2957 {
2958   if ( ! vtl->tpwin )
2959   {
2960     vtl->tpwin = vik_trw_layer_tpwin_new ( VIK_GTK_WINDOW_FROM_LAYER(vtl) );
2961     g_signal_connect_swapped ( GTK_DIALOG(vtl->tpwin), "response", G_CALLBACK(trw_layer_tpwin_response), vtl );
2962     /* connect signals -- DELETE SIGNAL VERY IMPORTANT TO SET TO NULL */
2963     g_signal_connect_swapped ( vtl->tpwin, "delete-event", G_CALLBACK(trw_layer_cancel_current_tp), vtl );
2964     gtk_widget_show_all ( GTK_WIDGET(vtl->tpwin) );
2965   }
2966   if ( vtl->current_tpl )
2967     vik_trw_layer_tpwin_set_tp ( vtl->tpwin, vtl->current_tpl, vtl->current_tp_track_name );
2968   /* set layer name and TP data */
2969 }
2970
2971 /***************************************************************************
2972  ** Tool code
2973  ***************************************************************************/
2974
2975 /*** Utility data structures and functions ****/
2976
2977 typedef struct {
2978   gint x, y;
2979   gint closest_x, closest_y;
2980   gchar *closest_wp_name;
2981   VikWaypoint *closest_wp;
2982   VikViewport *vvp;
2983 } WPSearchParams;
2984
2985 typedef struct {
2986   gint x, y;
2987   gint closest_x, closest_y;
2988   gchar *closest_track_name;
2989   VikTrackpoint *closest_tp;
2990   VikViewport *vvp;
2991   GList *closest_tpl;
2992 } TPSearchParams;
2993
2994 static void waypoint_search_closest_tp ( gchar *name, VikWaypoint *wp, WPSearchParams *params )
2995 {
2996   gint x, y;
2997   if ( !wp->visible )
2998     return;
2999
3000   vik_viewport_coord_to_screen ( params->vvp, &(wp->coord), &x, &y );
3001
3002   if ( abs (x - params->x) <= WAYPOINT_SIZE_APPROX && abs (y - params->y) <= WAYPOINT_SIZE_APPROX &&
3003       ((!params->closest_wp) ||        /* was the old waypoint we already found closer than this one? */
3004         abs(x - params->x)+abs(y - params->y) < abs(x - params->closest_x)+abs(y - params->closest_y)))
3005   {
3006     params->closest_wp_name = name;
3007     params->closest_wp = wp;
3008     params->closest_x = x;
3009     params->closest_y = y;
3010   }
3011 }
3012
3013 static void track_search_closest_tp ( gchar *name, VikTrack *t, TPSearchParams *params )
3014 {
3015   GList *tpl = t->trackpoints;
3016   VikTrackpoint *tp;
3017
3018   if ( !t->visible )
3019     return;
3020
3021   while (tpl)
3022   {
3023     gint x, y;
3024     tp = VIK_TRACKPOINT(tpl->data);
3025
3026     vik_viewport_coord_to_screen ( params->vvp, &(tp->coord), &x, &y );
3027
3028     if ( abs (x - params->x) <= TRACKPOINT_SIZE_APPROX && abs (y - params->y) <= TRACKPOINT_SIZE_APPROX &&
3029         ((!params->closest_tp) ||        /* was the old trackpoint we already found closer than this one? */
3030           abs(x - params->x)+abs(y - params->y) < abs(x - params->closest_x)+abs(y - params->closest_y)))
3031     {
3032       params->closest_track_name = name;
3033       params->closest_tp = tp;
3034       params->closest_tpl = tpl;
3035       params->closest_x = x;
3036       params->closest_y = y;
3037     }
3038     tpl = tpl->next;
3039   }
3040 }
3041
3042 static VikTrackpoint *closest_tp_in_five_pixel_interval ( VikTrwLayer *vtl, VikViewport *vvp, gint x, gint y )
3043 {
3044   TPSearchParams params;
3045   params.x = x;
3046   params.y = y;
3047   params.vvp = vvp;
3048   params.closest_track_name = NULL;
3049   params.closest_tp = NULL;
3050   g_hash_table_foreach ( vtl->tracks, (GHFunc) track_search_closest_tp, &params);
3051   return params.closest_tp;
3052 }
3053
3054 static VikWaypoint *closest_wp_in_five_pixel_interval ( VikTrwLayer *vtl, VikViewport *vvp, gint x, gint y )
3055 {
3056   WPSearchParams params;
3057   params.x = x;
3058   params.y = y;
3059   params.vvp = vvp;
3060   params.closest_wp = NULL;
3061   params.closest_wp_name = NULL;
3062   g_hash_table_foreach ( vtl->waypoints, (GHFunc) waypoint_search_closest_tp, &params);
3063   return params.closest_wp;
3064 }
3065
3066 /* background drawing hook, to be passed the viewport */
3067 static gboolean tool_sync_done = TRUE;
3068
3069 static gboolean tool_sync(gpointer data)
3070 {
3071   VikViewport *vvp = data;
3072   gdk_threads_enter();
3073   vik_viewport_sync(vvp);
3074   tool_sync_done = TRUE;
3075   gdk_threads_leave();
3076   return FALSE;
3077 }
3078
3079 typedef struct {
3080   VikViewport *vvp;
3081   gboolean holding;
3082   GdkGC *gc;
3083   int oldx, oldy;
3084 } tool_ed_t;
3085
3086 static void marker_begin_move ( tool_ed_t *t, gint x, gint y )
3087 {
3088   t->holding = TRUE;
3089   t->gc = vik_viewport_new_gc (t->vvp, "black", 2);
3090   gdk_gc_set_function ( t->gc, GDK_INVERT );
3091   vik_viewport_draw_rectangle ( t->vvp, t->gc, FALSE, x-3, y-3, 6, 6 );
3092   vik_viewport_sync(t->vvp);
3093   t->oldx = x;
3094   t->oldy = y;
3095 }
3096
3097 static void marker_moveto ( tool_ed_t *t, gint x, gint y )
3098 {
3099   VikViewport *vvp =  t->vvp;
3100   vik_viewport_draw_rectangle ( vvp, t->gc, FALSE, t->oldx-3, t->oldy-3, 6, 6 );
3101   vik_viewport_draw_rectangle ( vvp, t->gc, FALSE, x-3, y-3, 6, 6 );
3102   t->oldx = x;
3103   t->oldy = y;
3104
3105   if (tool_sync_done) {
3106     g_idle_add_full (G_PRIORITY_HIGH_IDLE + 10, tool_sync, vvp, NULL);
3107     tool_sync_done = FALSE;
3108   }
3109 }
3110
3111 static void marker_end_move ( tool_ed_t *t )
3112 {
3113   vik_viewport_draw_rectangle ( t->vvp, t->gc, FALSE, t->oldx-3, t->oldy-3, 6, 6 );
3114   g_object_unref ( t->gc );
3115   t->holding = FALSE;
3116 }
3117
3118 /*** Edit waypoint ****/
3119
3120 static gpointer tool_edit_waypoint_create ( VikWindow *vw, VikViewport *vvp)
3121 {
3122   tool_ed_t *t = g_new(tool_ed_t, 1);
3123   t->vvp = vvp;
3124   t->holding = FALSE;
3125   return t;
3126 }
3127
3128 static gboolean tool_edit_waypoint_click ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data )
3129 {
3130   WPSearchParams params;
3131   tool_ed_t *t = data;
3132   VikViewport *vvp = t->vvp;
3133
3134   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3135     return FALSE;
3136
3137   if ( t->holding ) {
3138     return TRUE;
3139   }
3140
3141   if ( !vtl->vl.visible || !vtl->waypoints_visible )
3142     return FALSE;
3143
3144   if ( vtl->current_wp && vtl->current_wp->visible )
3145   {
3146     /* first check if current WP is within area (other may be 'closer', but we want to move the current) */
3147     gint x, y;
3148     vik_viewport_coord_to_screen ( vvp, &(vtl->current_wp->coord), &x, &y );
3149
3150     if ( abs(x - event->x) <= WAYPOINT_SIZE_APPROX &&
3151          abs(y - event->y) <= WAYPOINT_SIZE_APPROX )
3152     {
3153       if ( event->button == 3 )
3154         vtl->waypoint_rightclick = TRUE; /* remember that we're clicking; other layers will ignore release signal */
3155       else {
3156         marker_begin_move(t, event->x, event->y);
3157       }
3158       return TRUE;
3159     }
3160   }
3161
3162   params.vvp = vvp;
3163   params.x = event->x;
3164   params.y = event->y;
3165   params.closest_wp_name = NULL;
3166   /* TODO: should get track listitem so we can break it up, make a new track, mess it up, all that. */
3167   params.closest_wp = NULL;
3168   g_hash_table_foreach ( vtl->waypoints, (GHFunc) waypoint_search_closest_tp, &params);
3169   if ( vtl->current_wp == params.closest_wp && vtl->current_wp != NULL )
3170   {
3171     /* how do we get here? I'm putting in the abort until we can figure it out. -alex */
3172     marker_begin_move(t, event->x, event->y);
3173     g_critical("shouldn't be here");
3174     exit(1);
3175   }
3176   else if ( params.closest_wp )
3177   {
3178     if ( event->button == 3 )
3179       vtl->waypoint_rightclick = TRUE; /* remember that we're clicking; other layers will ignore release signal */
3180     else
3181       vtl->waypoint_rightclick = FALSE;
3182
3183     vtl->current_wp = params.closest_wp;
3184     vtl->current_wp_name = params.closest_wp_name;
3185
3186     if ( params.closest_wp )
3187       vik_treeview_select_iter ( VIK_LAYER(vtl)->vt, g_hash_table_lookup ( vtl->waypoints_iters, vtl->current_wp_name ) );
3188
3189     /* could make it so don't update if old WP is off screen and new is null but oh well */
3190     vik_layer_emit_update ( VIK_LAYER(vtl) );
3191     return TRUE;
3192   }
3193
3194   vtl->current_wp = NULL;
3195   vtl->current_wp_name = NULL;
3196   vtl->waypoint_rightclick = FALSE;
3197   vik_layer_emit_update ( VIK_LAYER(vtl) );
3198   return FALSE;
3199 }
3200
3201 static gboolean tool_edit_waypoint_move ( VikTrwLayer *vtl, GdkEventMotion *event, gpointer data )
3202 {
3203   tool_ed_t *t = data;
3204   VikViewport *vvp = t->vvp;
3205
3206   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3207     return FALSE;
3208
3209   if ( t->holding ) {
3210     VikCoord new_coord;
3211     vik_viewport_screen_to_coord ( vvp, event->x, event->y, &new_coord );
3212
3213     /* snap to TP */
3214     if ( event->state & GDK_CONTROL_MASK )
3215     {
3216       VikTrackpoint *tp = closest_tp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3217       if ( tp )
3218         new_coord = tp->coord;
3219     }
3220
3221     /* snap to WP */
3222     if ( event->state & GDK_SHIFT_MASK )
3223     {
3224       VikWaypoint *wp = closest_wp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3225       if ( wp && wp != vtl->current_wp )
3226         new_coord = wp->coord;
3227     }
3228
3229     {
3230       gint x, y;
3231       vik_viewport_coord_to_screen ( vvp, &new_coord, &x, &y );
3232
3233       marker_moveto ( t, x, y );
3234     }
3235     return TRUE;
3236   }
3237   return FALSE;
3238 }
3239
3240 static gboolean tool_edit_waypoint_release ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data )
3241 {
3242   tool_ed_t *t = data;
3243   VikViewport *vvp = t->vvp;
3244
3245   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3246     return FALSE;
3247
3248   if ( t->holding && event->button == 1 )
3249   {
3250     VikCoord new_coord;
3251     vik_viewport_screen_to_coord ( vvp, event->x, event->y, &new_coord );
3252
3253     /* snap to TP */
3254     if ( event->state & GDK_CONTROL_MASK )
3255     {
3256       VikTrackpoint *tp = closest_tp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3257       if ( tp )
3258         new_coord = tp->coord;
3259     }
3260
3261     /* snap to WP */
3262     if ( event->state & GDK_SHIFT_MASK )
3263     {
3264       VikWaypoint *wp = closest_wp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3265       if ( wp && wp != vtl->current_wp )
3266         new_coord = wp->coord;
3267     }
3268
3269     marker_end_move ( t );
3270
3271     vtl->current_wp->coord = new_coord;
3272     vik_layer_emit_update ( VIK_LAYER(vtl) );
3273     return TRUE;
3274   }
3275   /* PUT IN RIGHT PLACE!!! */
3276   if ( event->button == 3 && vtl->waypoint_rightclick )
3277   {
3278     if ( vtl->wp_right_click_menu )
3279       gtk_object_sink ( GTK_OBJECT(vtl->wp_right_click_menu) );
3280     vtl->wp_right_click_menu = GTK_MENU ( gtk_menu_new () );
3281     vik_trw_layer_sublayer_add_menu_items ( vtl, vtl->wp_right_click_menu, NULL, VIK_TRW_LAYER_SUBLAYER_WAYPOINT, vtl->current_wp_name, g_hash_table_lookup ( vtl->waypoints_iters, vtl->current_wp_name  ) );
3282     gtk_menu_popup ( vtl->wp_right_click_menu, NULL, NULL, NULL, NULL, event->button, gtk_get_current_event_time() );
3283     vtl->waypoint_rightclick = FALSE;
3284   }
3285   return FALSE;
3286 }
3287
3288 /**** Begin track ***/
3289 static gpointer tool_begin_track_create ( VikWindow *vw, VikViewport *vvp)
3290 {
3291   return vvp;
3292 }
3293
3294 static gboolean tool_begin_track_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp )
3295 {
3296   vtl->current_track = NULL;
3297   return tool_new_track_click ( vtl, event, vvp );
3298 }
3299
3300 /*** New track ****/
3301
3302 static gpointer tool_new_track_create ( VikWindow *vw, VikViewport *vvp)
3303 {
3304   return vvp;
3305 }
3306
3307 typedef struct {
3308   VikTrwLayer *vtl;
3309   VikViewport *vvp;
3310   gint x1,y1,x2,y2;
3311 } new_track_move_passalong_t;
3312
3313 /* sync and undraw, but only when we have time */
3314 static gboolean ct_sync ( gpointer passalong )
3315 {
3316   new_track_move_passalong_t *p = (new_track_move_passalong_t *) passalong;
3317   vik_viewport_sync ( p->vvp );
3318   gdk_gc_set_function ( p->vtl->current_track_gc, GDK_INVERT );
3319   vik_viewport_draw_line ( p->vvp, p->vtl->current_track_gc, p->x1, p->y1, p->x2, p->y2 );
3320   gdk_gc_set_function ( p->vtl->current_track_gc, GDK_COPY );
3321   p->vtl->ct_sync_done = TRUE;
3322   g_free ( p );
3323   return FALSE;
3324 }
3325
3326 static VikLayerToolFuncStatus tool_new_track_move ( VikTrwLayer *vtl, GdkEventMotion *event, VikViewport *vvp )
3327 {
3328   /* if we haven't sync'ed yet, we don't have time to do more. */
3329   if ( vtl->ct_sync_done && vtl->current_track && vtl->current_track->trackpoints ) {
3330     GList *iter = vtl->current_track->trackpoints;
3331     new_track_move_passalong_t *passalong;
3332     gint x1, y1;
3333
3334     while ( iter->next )
3335       iter = iter->next;
3336     gdk_gc_set_function ( vtl->current_track_gc, GDK_INVERT );
3337     vik_viewport_coord_to_screen ( vvp, &(VIK_TRACKPOINT(iter->data)->coord), &x1, &y1 );
3338     vik_viewport_draw_line ( vvp, vtl->current_track_gc, x1, y1, event->x, event->y );
3339     gdk_gc_set_function ( vtl->current_track_gc, GDK_COPY );
3340
3341     passalong = g_new(new_track_move_passalong_t,1); /* freed by sync */
3342     passalong->vtl = vtl;
3343     passalong->vvp = vvp;
3344     passalong->x1 = x1;
3345     passalong->y1 = y1;
3346     passalong->x2 = event->x;
3347     passalong->y2 = event->y;
3348
3349     /* this will sync and undraw when we have time to */
3350     g_idle_add_full (G_PRIORITY_HIGH_IDLE + 10, ct_sync, passalong, NULL);
3351     vtl->ct_sync_done = FALSE;
3352     return VIK_LAYER_TOOL_ACK_GRAB_FOCUS;
3353   }
3354   return VIK_LAYER_TOOL_ACK;
3355 }
3356
3357 static gboolean tool_new_track_key_press ( VikTrwLayer *vtl, GdkEventKey *event, VikViewport *vvp )
3358 {
3359   if ( vtl->current_track && event->keyval == GDK_Escape ) {
3360     vtl->current_track = NULL;
3361     vik_layer_emit_update ( VIK_LAYER(vtl) );
3362     return TRUE;
3363   } else if ( vtl->current_track && event->keyval == GDK_BackSpace ) {
3364     /* undo */
3365     if ( vtl->current_track->trackpoints )
3366     {
3367       GList *last = g_list_last(vtl->current_track->trackpoints);
3368       g_free ( last->data );
3369       vtl->current_track->trackpoints = g_list_remove_link ( vtl->current_track->trackpoints, last );
3370     }
3371     vik_layer_emit_update ( VIK_LAYER(vtl) );
3372     return TRUE;
3373   }
3374   return FALSE;
3375 }
3376
3377 static gboolean tool_new_track_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp )
3378 {
3379   VikTrackpoint *tp;
3380
3381   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3382     return FALSE;
3383
3384   if ( event->button == 3 && vtl->current_track )
3385   {
3386     /* undo */
3387     if ( vtl->current_track->trackpoints )
3388     {
3389       GList *last = g_list_last(vtl->current_track->trackpoints);
3390       g_free ( last->data );
3391       vtl->current_track->trackpoints = g_list_remove_link ( vtl->current_track->trackpoints, last );
3392     }
3393     vik_layer_emit_update ( VIK_LAYER(vtl) );
3394     return TRUE;
3395   }
3396
3397   if ( event->type == GDK_2BUTTON_PRESS )
3398   {
3399     /* subtract last (duplicate from double click) tp then end */
3400     if ( vtl->current_track && vtl->current_track->trackpoints && vtl->ct_x1 == vtl->ct_x2 && vtl->ct_y1 == vtl->ct_y2 )
3401     {
3402       GList *last = g_list_last(vtl->current_track->trackpoints);
3403       g_free ( last->data );
3404       vtl->current_track->trackpoints = g_list_remove_link ( vtl->current_track->trackpoints, last );
3405       /* undo last, then end */
3406       vtl->current_track = NULL;
3407     }
3408     vik_layer_emit_update ( VIK_LAYER(vtl) );
3409     return TRUE;
3410   }
3411
3412   if ( ! vtl->current_track )
3413   {
3414     gchar *name = get_new_unique_sublayer_name(vtl, VIK_TRW_LAYER_SUBLAYER_TRACK, _("Track"));
3415     if ( ( name = a_dialog_new_track ( VIK_GTK_WINDOW_FROM_LAYER(vtl), vtl->tracks, name ) ) )
3416     {
3417       vtl->current_track = vik_track_new();
3418       vtl->current_track->visible = TRUE;
3419       vik_trw_layer_add_track ( vtl, name, vtl->current_track );
3420
3421       /* incase it was created by begin track */
3422       vik_window_enable_layer_tool ( VIK_WINDOW(VIK_GTK_WINDOW_FROM_LAYER(vtl)), VIK_LAYER_TRW, TOOL_CREATE_TRACK );
3423     }
3424     else
3425       return TRUE;
3426   }
3427   tp = vik_trackpoint_new();
3428   vik_viewport_screen_to_coord ( vvp, event->x, event->y, &(tp->coord) );
3429
3430   /* snap to other TP */
3431   if ( event->state & GDK_CONTROL_MASK )
3432   {
3433     VikTrackpoint *other_tp = closest_tp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3434     if ( other_tp )
3435       tp->coord = other_tp->coord;
3436   }
3437
3438   tp->newsegment = FALSE;
3439   tp->has_timestamp = FALSE;
3440   tp->timestamp = 0;
3441   vtl->current_track->trackpoints = g_list_append ( vtl->current_track->trackpoints, tp );
3442
3443   vtl->ct_x1 = vtl->ct_x2;
3444   vtl->ct_y1 = vtl->ct_y2;
3445   vtl->ct_x2 = event->x;
3446   vtl->ct_y2 = event->y;
3447
3448   vik_layer_emit_update ( VIK_LAYER(vtl) );
3449   return TRUE;
3450 }
3451
3452
3453 /*** New waypoint ****/
3454
3455 static gpointer tool_new_waypoint_create ( VikWindow *vw, VikViewport *vvp)
3456 {
3457   return vvp;
3458 }
3459
3460 static gboolean tool_new_waypoint_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp )
3461 {
3462   VikCoord coord;
3463   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3464     return FALSE;
3465   vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord );
3466   if (vik_trw_layer_new_waypoint ( vtl, VIK_GTK_WINDOW_FROM_LAYER(vtl), &coord ) && VIK_LAYER(vtl)->visible)
3467     vik_layer_emit_update ( VIK_LAYER(vtl) );
3468   return TRUE;
3469 }
3470
3471
3472 /*** Edit trackpoint ****/
3473
3474 static gpointer tool_edit_trackpoint_create ( VikWindow *vw, VikViewport *vvp)
3475 {
3476   tool_ed_t *t = g_new(tool_ed_t, 1);
3477   t->vvp = vvp;
3478   t->holding = FALSE;
3479   return t;
3480 }
3481
3482 static gboolean tool_edit_trackpoint_click ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data )
3483 {
3484   tool_ed_t *t = data;
3485   VikViewport *vvp = t->vvp;
3486   TPSearchParams params;
3487   /* OUTDATED DOCUMENTATION:
3488    find 5 pixel range on each side. then put these UTM, and a pointer
3489    to the winning track name (and maybe the winning track itself), and a
3490    pointer to the winning trackpoint, inside an array or struct. pass
3491    this along, do a foreach on the tracks which will do a foreach on the
3492    trackpoints. */
3493   params.vvp = vvp;
3494   params.x = event->x;
3495   params.y = event->y;
3496   params.closest_track_name = NULL;
3497   /* TODO: should get track listitem so we can break it up, make a new track, mess it up, all that. */
3498   params.closest_tp = NULL;
3499
3500   if ( event->button != 1 )
3501     return FALSE;
3502
3503   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3504     return FALSE;
3505
3506   if ( !vtl->vl.visible || !vtl->tracks_visible )
3507     return FALSE;
3508
3509   if ( vtl->current_tpl )
3510   {
3511     /* first check if it is within range of prev. tp. and if current_tp track is shown. (if it is, we are moving that trackpoint.) */
3512     VikTrackpoint *tp = VIK_TRACKPOINT(vtl->current_tpl->data);
3513     VikTrack *current_tr = VIK_TRACK(g_hash_table_lookup(vtl->tracks, vtl->current_tp_track_name));
3514     gint x, y;
3515     g_assert ( current_tr );
3516
3517     vik_viewport_coord_to_screen ( vvp, &(tp->coord), &x, &y );
3518
3519     if ( current_tr->visible &&
3520          abs(x - event->x) < TRACKPOINT_SIZE_APPROX &&
3521          abs(y - event->y) < TRACKPOINT_SIZE_APPROX ) {
3522       marker_begin_move ( t, event->x, event->y );
3523       return TRUE;
3524     }
3525
3526     vtl->last_tpl = vtl->current_tpl;
3527     vtl->last_tp_track_name = vtl->current_tp_track_name;
3528   }
3529
3530   g_hash_table_foreach ( vtl->tracks, (GHFunc) track_search_closest_tp, &params);
3531
3532   if ( params.closest_tp )
3533   {
3534     vtl->current_tpl = params.closest_tpl;
3535     vtl->current_tp_track_name = params.closest_track_name;
3536     vik_treeview_select_iter ( VIK_LAYER(vtl)->vt, g_hash_table_lookup ( vtl->tracks_iters, vtl->current_tp_track_name ) );
3537     trw_layer_tpwin_init ( vtl );
3538     vik_layer_emit_update ( VIK_LAYER(vtl) );
3539     return TRUE;
3540   }
3541
3542   /* these aren't the droids you're looking for */
3543   return FALSE;
3544 }
3545
3546 static gboolean tool_edit_trackpoint_move ( VikTrwLayer *vtl, GdkEventMotion *event, gpointer data )
3547 {
3548   tool_ed_t *t = data;
3549   VikViewport *vvp = t->vvp;
3550
3551   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3552     return FALSE;
3553
3554   if ( t->holding )
3555   {
3556     VikCoord new_coord;
3557     vik_viewport_screen_to_coord ( vvp, event->x, event->y, &new_coord );
3558
3559     /* snap to TP */
3560     if ( event->state & GDK_CONTROL_MASK )
3561     {
3562       VikTrackpoint *tp = closest_tp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3563       if ( tp && tp != vtl->current_tpl->data )
3564         new_coord = tp->coord;
3565     }
3566     //    VIK_TRACKPOINT(vtl->current_tpl->data)->coord = new_coord;
3567     {
3568       gint x, y;
3569       vik_viewport_coord_to_screen ( vvp, &new_coord, &x, &y );
3570       marker_moveto ( t, x, y );
3571     }
3572
3573     return TRUE;
3574   }
3575   return FALSE;
3576 }
3577
3578 static gboolean tool_edit_trackpoint_release ( VikTrwLayer *vtl, GdkEventButton *event, gpointer data )
3579 {
3580   tool_ed_t *t = data;
3581   VikViewport *vvp = t->vvp;
3582
3583   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3584     return FALSE;
3585   if ( event->button != 1)
3586     return FALSE;
3587
3588   if ( t->holding ) {
3589     VikCoord new_coord;
3590     vik_viewport_screen_to_coord ( vvp, event->x, event->y, &new_coord );
3591
3592     /* snap to TP */
3593     if ( event->state & GDK_CONTROL_MASK )
3594     {
3595       VikTrackpoint *tp = closest_tp_in_five_pixel_interval ( vtl, vvp, event->x, event->y );
3596       if ( tp && tp != vtl->current_tpl->data )
3597         new_coord = tp->coord;
3598     }
3599
3600     VIK_TRACKPOINT(vtl->current_tpl->data)->coord = new_coord;
3601
3602     marker_end_move ( t );
3603
3604     /* diff dist is diff from orig */
3605     vik_trw_layer_tpwin_set_tp ( vtl->tpwin, vtl->current_tpl, vtl->current_tp_track_name );
3606     /* can't join with itself! */
3607     trw_layer_cancel_last_tp ( vtl );
3608
3609     vik_layer_emit_update ( VIK_LAYER(vtl) );
3610     return TRUE;
3611   }
3612   return FALSE;
3613 }
3614
3615
3616 /*** Magic Scissors ***/
3617 static gpointer tool_magic_scissors_create ( VikWindow *vw, VikViewport *vvp)
3618 {
3619   return vvp;
3620 }
3621
3622 static gboolean tool_magic_scissors_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp )
3623 {
3624   VikCoord tmp;
3625   if ( !vtl ) return FALSE;
3626   vik_viewport_screen_to_coord ( vvp, event->x, event->y, &tmp );
3627   if ( event->button == 3 && vtl->magic_scissors_current_track ) {
3628     VikCoord *new_end;
3629     new_end = vik_track_cut_back_to_double_point ( vtl->magic_scissors_current_track );
3630     if ( new_end ) {
3631       vtl->magic_scissors_coord = *new_end;
3632       g_free ( new_end );
3633       vik_layer_emit_update ( VIK_LAYER(vtl) );
3634       /* remove last ' to:...' */
3635       if ( vtl->magic_scissors_current_track->comment ) {
3636         gchar *last_to = strrchr ( vtl->magic_scissors_current_track->comment, 't' );
3637         if ( last_to && (last_to - vtl->magic_scissors_current_track->comment > 1) ) {
3638           gchar *new_comment = g_strndup ( vtl->magic_scissors_current_track->comment,
3639                                            last_to - vtl->magic_scissors_current_track->comment - 1);
3640           vik_track_set_comment_no_copy ( vtl->magic_scissors_current_track, new_comment );
3641         }
3642       }
3643     }
3644   }
3645   else if ( vtl->magic_scissors_started || (event->state & GDK_CONTROL_MASK && vtl->magic_scissors_current_track) ) {
3646     struct LatLon start, end;
3647     gchar startlat[G_ASCII_DTOSTR_BUF_SIZE], startlon[G_ASCII_DTOSTR_BUF_SIZE];
3648     gchar endlat[G_ASCII_DTOSTR_BUF_SIZE], endlon[G_ASCII_DTOSTR_BUF_SIZE];
3649     gchar *url;
3650
3651     vik_coord_to_latlon ( &(vtl->magic_scissors_coord), &start );
3652     vik_coord_to_latlon ( &(tmp), &end );
3653     vtl->magic_scissors_coord = tmp; /* for continuations */
3654
3655     /* these are checked when adding a track from a file (vik_trw_layer_filein_add_track) */
3656     if ( event->state & GDK_CONTROL_MASK && vtl->magic_scissors_current_track ) {
3657       vtl->magic_scissors_append = TRUE;  // merge tracks. keep started true.
3658     } else {
3659       vtl->magic_scissors_check_added_track = TRUE;
3660       vtl->magic_scissors_started = FALSE;
3661     }
3662
3663     url = g_strdup_printf(GOOGLE_DIRECTIONS_STRING,
3664                           g_ascii_dtostr (startlat, G_ASCII_DTOSTR_BUF_SIZE, (gdouble) start.lat),
3665                           g_ascii_dtostr (startlon, G_ASCII_DTOSTR_BUF_SIZE, (gdouble) start.lon),
3666                           g_ascii_dtostr (endlat, G_ASCII_DTOSTR_BUF_SIZE, (gdouble) end.lat),
3667                           g_ascii_dtostr (endlon, G_ASCII_DTOSTR_BUF_SIZE, (gdouble) end.lon));
3668     a_babel_convert_from_url ( vtl, url, "kml", NULL, NULL );
3669     g_free ( url );
3670
3671     /* see if anything was done -- a track was added or appended to */
3672     if ( vtl->magic_scissors_check_added_track && vtl->magic_scissors_added_track_name ) {
3673       VikTrack *tr;
3674
3675       tr = g_hash_table_lookup ( vtl->tracks, vtl->magic_scissors_added_track_name );
3676
3677       if ( tr )
3678         vik_track_set_comment_no_copy ( tr, g_strdup_printf("from: %f,%f to: %f,%f", start.lat, start.lon, end.lat, end.lon ) );
3679
3680       vtl->magic_scissors_current_track = tr;
3681
3682       g_free ( vtl->magic_scissors_added_track_name );
3683       vtl->magic_scissors_added_track_name = NULL;
3684     } else if ( vtl->magic_scissors_append == FALSE && vtl->magic_scissors_current_track ) {
3685       /* magic_scissors_append was originally TRUE but set to FALSE by filein_add_track */
3686       gchar *new_comment = g_strdup_printf("%s to: %f,%f", vtl->magic_scissors_current_track->comment, end.lat, end.lon );
3687       vik_track_set_comment_no_copy ( vtl->magic_scissors_current_track, new_comment );
3688     }
3689     vtl->magic_scissors_check_added_track = FALSE;
3690     vtl->magic_scissors_append = FALSE;
3691
3692     vik_layer_emit_update ( VIK_LAYER(vtl) );
3693   } else {
3694     vtl->magic_scissors_started = TRUE;
3695     vtl->magic_scissors_coord = tmp;
3696     vtl->magic_scissors_current_track = NULL;
3697   }
3698   return TRUE;
3699 }
3700
3701 /*** Show picture ****/
3702
3703 static gpointer tool_show_picture_create ( VikWindow *vw, VikViewport *vvp)
3704 {
3705   return vvp;
3706 }
3707
3708 /* Params are: vvp, event, last match found or NULL */
3709 static void tool_show_picture_wp ( char *name, VikWaypoint *wp, gpointer params[2] )
3710 {
3711   if ( wp->image && wp->visible )
3712   {
3713     gint x, y, slackx, slacky;
3714     GdkEventButton *event = (GdkEventButton *) params[1];
3715
3716     vik_viewport_coord_to_screen ( VIK_VIEWPORT(params[0]), &(wp->coord), &x, &y );
3717     slackx = wp->image_width / 2;
3718     slacky = wp->image_height / 2;
3719     if (    x <= event->x + slackx && x >= event->x - slackx
3720          && y <= event->y + slacky && y >= event->y - slacky )
3721     {
3722       params[2] = wp->image; /* we've found a match. however continue searching
3723                               * since we want to find the last match -- that
3724                               * is, the match that was drawn last. */
3725     }
3726   }
3727 }
3728
3729 static gboolean tool_show_picture_click ( VikTrwLayer *vtl, GdkEventButton *event, VikViewport *vvp )
3730 {
3731   gpointer params[3] = { vvp, event, NULL };
3732   if (!vtl || vtl->vl.type != VIK_LAYER_TRW)
3733     return FALSE;
3734   g_hash_table_foreach ( vtl->waypoints, (GHFunc) tool_show_picture_wp, params );
3735   if ( params[2] )
3736   {
3737     /* thanks to the Gaim people for showing me ShellExecute and g_spawn_command_line_async */
3738 #ifdef WINDOWS
3739     ShellExecute(NULL, NULL, (char *) params[2], NULL, ".\\", 0);
3740 #else /* WINDOWS */
3741     GError *err = NULL;
3742     gchar *quoted_file = g_shell_quote ( (gchar *) params[2] );
3743     gchar *cmd = g_strdup_printf ( "eog %s", quoted_file );
3744     g_free ( quoted_file );
3745     if ( ! g_spawn_command_line_async ( cmd, &err ) )
3746     {
3747       a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(vtl), _("Could not launch eog to open file.") );
3748       g_error_free ( err );
3749     }
3750     g_free ( cmd );
3751 #endif /* WINDOWS */
3752     return TRUE; /* found a match */
3753   }
3754   else
3755     return FALSE; /* go through other layers, searching for a match */
3756 }
3757
3758 /***************************************************************************
3759  ** End tool code
3760  ***************************************************************************/
3761
3762
3763
3764
3765
3766 static void image_wp_make_list ( char *name, VikWaypoint *wp, GSList **pics )
3767 {
3768   if ( wp->image && ( ! a_thumbnails_exists ( wp->image ) ) )
3769     *pics = g_slist_append ( *pics, (gpointer) g_strdup ( wp->image ) );
3770 }
3771
3772 static void create_thumbnails_thread ( GSList *pics, gpointer threaddata )
3773 {
3774   guint total = g_slist_length(pics), done = 0;
3775   while ( pics )
3776   {
3777     a_thumbnails_create ( (gchar *) pics->data );
3778     a_background_thread_progress ( threaddata, ((gdouble) ++done) / total );
3779     pics = pics->next;
3780   }
3781 }
3782
3783 static void free_pics_slist ( GSList *pics )
3784 {
3785   while ( pics )
3786   {
3787     g_free ( pics->data );
3788     pics = g_slist_delete_link ( pics, pics );
3789   }
3790 }
3791
3792 static void trw_layer_verify_thumbnails ( VikTrwLayer *vtl, GtkWidget *vp )
3793 {
3794   if ( ! vtl->has_verified_thumbnails )
3795   {
3796     GSList *pics = NULL;
3797     g_hash_table_foreach ( vtl->waypoints, (GHFunc) image_wp_make_list, &pics );
3798     if ( pics )
3799     {
3800       gint len = g_slist_length ( pics );
3801       gchar *tmp = g_strdup_printf ( _("Creating %d Image Thumbnails..."), len );
3802       a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vtl), tmp, (vik_thr_func) create_thumbnails_thread, pics, (vik_thr_free_func) free_pics_slist, NULL, len );
3803       g_free ( tmp );
3804     }
3805   }
3806 }
3807
3808 VikCoordMode vik_trw_layer_get_coord_mode ( VikTrwLayer *vtl )
3809 {
3810   return vtl->coord_mode;
3811 }
3812
3813
3814
3815 static void waypoint_convert ( const gchar *name, VikWaypoint *wp, VikCoordMode *dest_mode )
3816 {
3817   vik_coord_convert ( &(wp->coord), *dest_mode );
3818 }
3819
3820 static void track_convert ( const gchar *name, VikTrack *tr, VikCoordMode *dest_mode )
3821 {
3822   vik_track_convert ( tr, *dest_mode );
3823 }
3824
3825 static void trw_layer_change_coord_mode ( VikTrwLayer *vtl, VikCoordMode dest_mode )
3826 {
3827   if ( vtl->coord_mode != dest_mode )
3828   {
3829     vtl->coord_mode = dest_mode;
3830     g_hash_table_foreach ( vtl->waypoints, (GHFunc) waypoint_convert, &dest_mode );
3831     g_hash_table_foreach ( vtl->tracks, (GHFunc) track_convert, &dest_mode );
3832   }
3833 }
3834
3835 VikWaypoint *vik_trw_layer_get_waypoint ( VikTrwLayer *vtl, gchar *name )
3836 {
3837   return g_hash_table_lookup ( vtl->waypoints, name );
3838 }
3839
3840 VikTrack *vik_trw_layer_get_track ( VikTrwLayer *vtl, gchar *name )
3841 {
3842   return g_hash_table_lookup ( vtl->tracks, name );
3843 }
3844
3845 static void vik_trw_layer_set_menu_selection(VikTrwLayer *vtl, guint16 selection)
3846 {
3847   vtl->menu_selection = selection;
3848 }
3849
3850 static guint16 vik_trw_layer_get_menu_selection(VikTrwLayer *vtl)
3851 {
3852   return(vtl->menu_selection);
3853 }
3854
3855 /* ----------- Downloading maps along tracks --------------- */
3856
3857 static int get_download_area_width(VikViewport *vvp, gdouble zoom_level, struct LatLon *wh)
3858 {
3859   /* TODO: calculating based on current size of viewport */
3860   const gdouble w_at_zoom_0_125 = 0.0013;
3861   const gdouble h_at_zoom_0_125 = 0.0011;
3862   gdouble zoom_factor = zoom_level/0.125;
3863
3864   wh->lat = h_at_zoom_0_125 * zoom_factor;
3865   wh->lon = w_at_zoom_0_125 * zoom_factor;
3866
3867   return 0;   /* all OK */
3868 }
3869
3870 static VikCoord *get_next_coord(VikCoord *from, VikCoord *to, struct LatLon *dist, gdouble gradient)
3871 {
3872   if ((dist->lon >= ABS(to->east_west - from->east_west)) &&
3873       (dist->lat >= ABS(to->north_south - from->north_south)))
3874     return NULL;
3875
3876   VikCoord *coord = g_malloc(sizeof(VikCoord));
3877   coord->mode = VIK_COORD_LATLON;
3878
3879   if (ABS(gradient) < 1) {
3880     if (from->east_west > to->east_west)
3881       coord->east_west = from->east_west - dist->lon;
3882     else
3883       coord->east_west = from->east_west + dist->lon;
3884     coord->north_south = gradient * (coord->east_west - from->east_west) + from->north_south;
3885   } else {
3886     if (from->north_south > to->north_south)
3887       coord->north_south = from->north_south - dist->lat;
3888     else
3889       coord->north_south = from->north_south + dist->lat;
3890     coord->east_west = (1/gradient) * (coord->north_south - from->north_south) + from->north_south;
3891   }
3892
3893   return coord;
3894 }
3895
3896 static GList *add_fillins(GList *list, VikCoord *from, VikCoord *to, struct LatLon *dist)
3897 {
3898   /* TODO: handle virtical track (to->east_west - from->east_west == 0) */
3899   gdouble gradient = (to->north_south - from->north_south)/(to->east_west - from->east_west);
3900
3901   VikCoord *next = from;
3902   while (TRUE) {
3903     if ((next = get_next_coord(next, to, dist, gradient)) == NULL)
3904         break;
3905     list = g_list_prepend(list, next);
3906   }
3907
3908   return list;
3909 }
3910
3911 void vik_track_download_map(VikTrack *tr, VikMapsLayer *vml, VikViewport *vvp, gdouble zoom_level)
3912 {
3913   typedef struct _Rect {
3914     VikCoord tl;
3915     VikCoord br;
3916     VikCoord center;
3917   } Rect;
3918 #define GLRECT(iter) ((Rect *)((iter)->data))
3919
3920   struct LatLon wh;
3921   GList *rects_to_download = NULL;
3922   GList *rect_iter;
3923
3924   if (get_download_area_width(vvp, zoom_level, &wh))
3925     return;
3926
3927   GList *iter = tr->trackpoints;
3928   if (!iter)
3929     return;
3930
3931   gboolean new_map = TRUE;
3932   VikCoord *cur_coord, tl, br;
3933   Rect *rect;
3934   while (iter) {
3935     cur_coord = &(VIK_TRACKPOINT(iter->data))->coord;
3936     if (new_map) {
3937       vik_coord_set_area(cur_coord, &wh, &tl, &br);
3938       rect = g_malloc(sizeof(Rect));
3939       rect->tl = tl;
3940       rect->br = br;
3941       rect->center = *cur_coord;
3942       rects_to_download = g_list_prepend(rects_to_download, rect);
3943       new_map = FALSE;
3944       iter = iter->next;
3945       continue;
3946     }
3947     gboolean found = FALSE;
3948     for (rect_iter = rects_to_download; rect_iter; rect_iter = rect_iter->next) {
3949       if (vik_coord_inside(cur_coord, &GLRECT(rect_iter)->tl, &GLRECT(rect_iter)->br)) {
3950         found = TRUE;
3951         break;
3952       }
3953     }
3954     if (found)
3955         iter = iter->next;
3956     else
3957       new_map = TRUE;
3958   }
3959
3960   GList *fillins = NULL;
3961   /* 'fillin' doesn't work in UTM mode - potentially ending up in massive loop continually allocating memory - hence don't do it */
3962   /* seems that ATM the function get_next_coord works only for LATLON */
3963   if ( cur_coord->mode == VIK_COORD_LATLON ) {
3964     /* fill-ins for far apart points */
3965     GList *cur_rect, *next_rect;
3966     for (cur_rect = rects_to_download;
3967          (next_rect = cur_rect->next) != NULL;
3968          cur_rect = cur_rect->next) {
3969       if ((wh.lon < ABS(GLRECT(cur_rect)->center.east_west - GLRECT(next_rect)->center.east_west)) ||
3970           (wh.lat < ABS(GLRECT(cur_rect)->center.north_south - GLRECT(next_rect)->center.north_south))) {
3971         fillins = add_fillins(fillins, &GLRECT(cur_rect)->center, &GLRECT(next_rect)->center, &wh);
3972       }
3973     }
3974   } else
3975     g_message("%s: this feature works only in Mercator mode", __FUNCTION__);
3976
3977   if (fillins) {
3978     GList *iter = fillins;
3979     while (iter) {
3980       cur_coord = (VikCoord *)(iter->data);
3981       vik_coord_set_area(cur_coord, &wh, &tl, &br);
3982       rect = g_malloc(sizeof(Rect));
3983       rect->tl = tl;
3984       rect->br = br;
3985       rect->center = *cur_coord;
3986       rects_to_download = g_list_prepend(rects_to_download, rect);
3987       iter = iter->next;
3988     }
3989   }
3990
3991   for (rect_iter = rects_to_download; rect_iter; rect_iter = rect_iter->next) {
3992     maps_layer_download_section_without_redraw(vml, vvp, &(((Rect *)(rect_iter->data))->tl), &(((Rect *)(rect_iter->data))->br), zoom_level);
3993   }
3994
3995   if (fillins) {
3996     for (iter = fillins; iter; iter = iter->next)
3997       g_free(iter->data);
3998     g_list_free(fillins);
3999   }
4000   if (rects_to_download) {
4001     for (rect_iter = rects_to_download; rect_iter; rect_iter = rect_iter->next)
4002       g_free(rect_iter->data);
4003     g_list_free(rects_to_download);
4004   }
4005 }
4006
4007 static void trw_layer_download_map_along_track_cb(gpointer pass_along[6])
4008 {
4009   VikMapsLayer *vml;
4010   gint selected_map, default_map;
4011   gchar *zoomlist[] = {"0.125", "0.25", "0.5", "1", "2", "4", "8", "16", "32", "64", "128", "256", "512", "1024", NULL };
4012   gdouble zoom_vals[] = {0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024};
4013   gint selected_zoom, default_zoom;
4014   int i,j;
4015
4016
4017   VikTrwLayer *vtl = pass_along[0];
4018   VikLayersPanel *vlp = pass_along[1];
4019   VikTrack *tr = (VikTrack *) g_hash_table_lookup ( VIK_TRW_LAYER(pass_along[0])->tracks, pass_along[3] );
4020   VikViewport *vvp = vik_window_viewport((VikWindow *)(VIK_GTK_WINDOW_FROM_LAYER(vtl)));
4021
4022   GList *vmls = vik_layers_panel_get_all_layers_of_type(vlp, VIK_LAYER_MAPS);
4023   int num_maps = g_list_length(vmls);
4024
4025   if (!num_maps) {
4026     a_dialog_msg(VIK_GTK_WINDOW_FROM_LAYER(vtl), GTK_MESSAGE_ERROR, _("No map layer in use. Create one first"), NULL);
4027     return;
4028   }
4029
4030   gchar **map_names = g_malloc(1 + num_maps * sizeof(gpointer));
4031   VikMapsLayer **map_layers = g_malloc(1 + num_maps * sizeof(gpointer));
4032
4033   gchar **np = map_names;
4034   VikMapsLayer **lp = map_layers;
4035   for (i = 0; i < num_maps; i++) {
4036     gboolean dup = FALSE;
4037     vml = (VikMapsLayer *)(vmls->data);
4038     for (j = 0; j < i; j++) { /* no duplicate allowed */
4039       if (vik_maps_layer_get_map_type(vml) == vik_maps_layer_get_map_type(map_layers[j])) {
4040         dup = TRUE;
4041         break;
4042       }
4043     }
4044     if (!dup) {
4045       *lp++ = vml;
4046       *np++ = vik_maps_layer_get_map_label(vml);
4047     }
4048     vmls = vmls->next;
4049   }
4050   *lp = NULL;
4051   *np = NULL;
4052   num_maps = lp - map_layers;
4053
4054   for (default_map = 0; default_map < num_maps; default_map++) {
4055     /* TODO: check for parent layer's visibility */
4056     if (VIK_LAYER(map_layers[default_map])->visible)
4057       break;
4058   }
4059   default_map = (default_map == num_maps) ? 0 : default_map;
4060
4061   gdouble cur_zoom = vik_viewport_get_zoom(vvp);
4062   for (default_zoom = 0; default_zoom < sizeof(zoom_vals)/sizeof(gdouble); default_zoom++) {
4063     if (cur_zoom == zoom_vals[default_zoom])
4064       break;
4065   }
4066   default_zoom = (default_zoom == sizeof(zoom_vals)/sizeof(gdouble)) ? sizeof(zoom_vals)/sizeof(gdouble) - 1 : default_zoom;
4067
4068   if (!a_dialog_map_n_zoom(VIK_GTK_WINDOW_FROM_LAYER(vtl), map_names, default_map, zoomlist, default_zoom, &selected_map, &selected_zoom))
4069     goto done;
4070
4071   vik_track_download_map(tr, map_layers[selected_map], vvp, zoom_vals[selected_zoom]);
4072
4073 done:
4074   for (i = 0; i < num_maps; i++)
4075     g_free(map_names[i]);
4076   g_free(map_names);
4077   g_free(map_layers);
4078
4079   g_list_free(vmls);
4080
4081 }
4082
4083 /**** lowest waypoint number calculation ***/
4084 static gint highest_wp_number_name_to_number(const gchar *name) {
4085   if ( strlen(name) == 3 ) {
4086     int n = atoi(name);
4087     if ( n < 100 && name[0] != '0' )
4088       return -1;
4089     if ( n < 10 && name[0] != '0' )
4090       return -1;
4091     return n;
4092   }
4093   return -1;
4094 }
4095
4096
4097 static void highest_wp_number_reset(VikTrwLayer *vtl)
4098 {
4099   vtl->highest_wp_number = -1;
4100 }
4101
4102 static void highest_wp_number_add_wp(VikTrwLayer *vtl, const gchar *new_wp_name)
4103 {
4104   /* if is bigger that top, add it */
4105   gint new_wp_num = highest_wp_number_name_to_number(new_wp_name);
4106   if ( new_wp_num > vtl->highest_wp_number )
4107     vtl->highest_wp_number = new_wp_num;
4108 }
4109
4110 static void highest_wp_number_remove_wp(VikTrwLayer *vtl, const gchar *old_wp_name)
4111 {
4112   /* if wasn't top, do nothing. if was top, count backwards until we find one used */
4113   gint old_wp_num = highest_wp_number_name_to_number(old_wp_name);
4114   if ( vtl->highest_wp_number == old_wp_num ) {
4115     gchar buf[4];
4116     vtl->highest_wp_number --;
4117
4118     g_snprintf(buf,4,"%03d", vtl->highest_wp_number );
4119     /* search down until we find something that *does* exist */
4120
4121     while ( vtl->highest_wp_number > 0 && ! g_hash_table_lookup ( vtl->waypoints, buf ) ) {
4122       vtl->highest_wp_number --;
4123       g_snprintf(buf,4,"%03d", vtl->highest_wp_number );
4124     }
4125   }
4126 }
4127
4128 /* get lowest unused number */
4129 static gchar *highest_wp_number_get(VikTrwLayer *vtl)
4130 {
4131   gchar buf[4];
4132   if ( vtl->highest_wp_number < 0 || vtl->highest_wp_number >= 999 )
4133     return NULL;
4134   g_snprintf(buf,4,"%03d", vtl->highest_wp_number+1 );
4135   return g_strdup(buf);
4136 }