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