src/ui/sketchwidget.h

   1
   2 /*
   3  * This file is part of maemopad+
   4  *
   5  *
   6  * This software is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public License
   8  * as published by the Free Software Foundation; either version 2.1 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This software is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this software; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  *
  21  */
  22
  23 #ifndef SKETCHWIDGET_H
  24 #define SKETCHWIDGET_H
  25
  26 #include <gtk/gtk.h>
  27
  28 #define PRESSURE_MIN 0.1
  29 #define PRESSURE_MAX 0.35
  30
  31 #define BACKGRAPH_LINE_HEIGHT 32
  32 #define BACKGRAPH_LINE_MARGIN 40
  33 #define BACKGRAPH_LINE_SIZE 1
  34 #define BACKGRAPH_LINE_MARGIN_SIZE 2
  35
  36 #define BACKGRAPH_GRAPH_WIDTH 32
  37 #define BACKGRAPH_GRAPH_SIZE 1
  38
  39 typedef enum
  40         {
  41                 SKETCHBACK_UNSET = -1,
  42                 SKETCHBACK_NONE,
  43                 SKETCHBACK_LINES,
  44                 SKETCHBACK_GRAPH,
  45                 SKETCHBACK_COUNT
  46         } sketchBack;
  47
  48 #define TILE_SIZE 32
  49
  50 /*
  51  * 800/TILE_SIZE
  52  */
  53 #define TILES_X 25
  54 #define TILES_ROWSTRIDE TILES_X
  55
  56 /*
  57  * 480/TILE_SIZE
  58  */
  59 #define TILES_Y 15
  60
  61 #define UNDO_LEVELS 10
  62
  63 typedef enum
  64         {
  65                 SKETCHSHAPE_FREEHAND = 0,
  66                 SKETCHSHAPE_LINE,
  67                 SKETCHSHAPE_RECT,
  68                 SKETCHSHAPE_ELLIPSE,
  69                 SKETCHSHAPE_COUNT
  70         } sketchShape;
  71
  72 typedef struct _SketchWidgetTile SketchWidgetTile;
  73 struct _SketchWidgetTile
  74         {
  75                 guint tileid;
  76                 GdkPixmap *tiledata;
  77                 GdkPixmap *tiledata_new;
  78         };
  79
  80 typedef struct _SketchWidgetUndo SketchWidgetUndo;
  81 struct _SketchWidgetUndo
  82         {
  83
  84                 /*
  85                  * keep a linked list for modified tiles with their data
  86                  */
  87                 GSList *tileList;                                               /*list of SketchWidgetTile */
  88                 char saved_tiles[TILES_X * TILES_Y]; /*fast dupe check*/
  89         };
  90
  91 typedef struct _SketchWidget SketchWidget;
  92 struct _SketchWidget
  93         {
  94                 GtkWidget *scrolledwindow;
  95                 GtkWidget *drawingarea;
  96                 GdkPixmap *pixmap;
  97                 GdkPixmap *backpixmap;
  98
  99                 GdkPixmap *backpixmaps[SKETCHBACK_COUNT];
 100                 int backpixmapheights[SKETCHBACK_COUNT];
 101
 102                 sketchBack backstyle;
 103                 sketchBack backstyle_currentimage;
 104
 105                 sketchShape shape;
 106                 gboolean fillmode;
 107                 gboolean shiftmode;
 108
 109                 guint brush_size;
 110                 guint brush_radius;
 111                 GdkColor brush_color;
 112                 gboolean border;
 113
 114                 GdkGC *gc;
 115                 GdkGC *backgc;
 116                 unsigned long lastevent_x, lastevent_y, start_x, start_y, cur_x, cur_y;
 117                 gboolean pressed;
 118
 119                 gboolean is_edited;
 120
 121                 GList *undolist;                                                /*list of SketchWidgetUndo, kept reverse */
 122                 guint undocurrent;                                      /*current index on the undolist (=available redo steps) */
 123                 /*undocurrent = 0, no redo available*/
 124
 125                 /*
 126                  * current undo buffer, active when mouse pointer is held down
 127                  * when mouse pointer is released the new states of tiles will be saved again,
 128                  * then this will be prepended to *undolist and set to NULL
 129                  */
 130                 SketchWidgetUndo *undocurbuffer;
 131
 132                 void (*callback_undotoggle) (SketchWidget * sk, gboolean st, gpointer data);
 133                 void (*callback_redotoggle) (SketchWidget * sk, gboolean st, gpointer data);
 134                 gpointer callback_undotoggle_data;
 135                 gpointer callback_redotoggle_data;
 136
 137                 guint sizex, sizey;
 138                 guint stupidflag; /*1:ignore next motion_event 2:ignore next keypress 0:normal*/
 139         };
 140
 141 SketchWidget *sketchwidget_new(gint sizex, gint sizey, gboolean border);
 142 void sketchwidget_destroy(SketchWidget * sk);
 143 gboolean sketch_configure(GtkWidget * widget, GdkEventConfigure * event, SketchWidget * sk);
 144
 145 void sketchwidget_set_undocallback(SketchWidget * sk, void *func, gpointer data);
 146 void sketchwidget_set_redocallback(SketchWidget * sk, void *func, gpointer data);
 147 GtkWidget *sketchwidget_get_drawingarea(SketchWidget * sk);
 148 GtkWidget *sketchwidget_get_mainwidget(SketchWidget * sk);
 149 gboolean sketchwidget_get_edited(SketchWidget * sk);
 150 void sketchwidget_set_edited(SketchWidget * sk, gboolean status);
 151 void sketchwidget_clear_real(SketchWidget * sk);
 152 void sketchwidget_clear(SketchWidget * sk);
 153 void sketchwidget_set_fillmode(SketchWidget * sk, gboolean filled);
 154 void sketchwidget_set_shift(SketchWidget * sk, gboolean shift);
 155 gboolean sketchwidget_get_shift(SketchWidget * sk);
 156 void sketchwidget_set_shape(SketchWidget * sk, sketchShape sp);
 157 void sketchwidget_set_brushsize(SketchWidget * sk, guint bsize);
 158 guint sketchwidget_get_brushsize(SketchWidget * sk);
 159 void sketchwidget_set_brushcolor(SketchWidget * sk, GdkColor col);
 160 GdkColor sketchwidget_get_brushcolor(SketchWidget * sk);
 161 void sketchwidget_set_backstyle(SketchWidget * sk, sketchBack style);
 162
 163 GdkPixbuf *sketchwidget_trim_image(GdkPixbuf * pixbuf, guint totalw, guint totalh, double *w, double *h, gboolean doTopLeft);
 164
 165 gboolean sketchwidget_cut(SketchWidget * sk, GtkClipboard * clippy);
 166 gboolean sketchwidget_copy(SketchWidget * sk, GtkClipboard * clippy);
 167 gboolean sketchwidget_paste(SketchWidget * sk, GtkClipboard * clippy);
 168
 169 /*
 170  * unref the result afterwards
 171  */
 172 GdkPixmap *sketchwidget_get_Pixmap(SketchWidget * sk);
 173
 174 /*
 175  * undo/redo
 176  */
 177 gboolean sketchwidget_undo(SketchWidget * sk);
 178 gboolean sketchwidget_redo(SketchWidget * sk);
 179 void sketchwidget_wipe_undo(SketchWidget * sk);
 180
 181 #endif