Pileus Git - ~andy/gtk/blob - gdk/gdkinternals.h

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 /* Uninstalled header defining types and functions internal to GDK */
  28
  29 #include <gdk/gdktypes.h>
  30 #include <gdk/gdkwindow.h>
  31 #include <gdk/gdkprivate.h>
  32
  33 #ifndef __GDK_INTERNALS_H__
  34 #define __GDK_INTERNALS_H__
  35
  36 /**********************
  37  * General Facilities *
  38  **********************/
  39
  40 /* Debugging support */
  41
  42 typedef struct _GdkColorInfo           GdkColorInfo;
  43 typedef struct _GdkEventFilter         GdkEventFilter;
  44 typedef struct _GdkClientFilter        GdkClientFilter;
  45
  46 typedef enum {
  47   GDK_COLOR_WRITEABLE = 1 << 0
  48 } GdkColorInfoFlags;
  49
  50 struct _GdkColorInfo
  51 {
  52   GdkColorInfoFlags flags;
  53   guint ref_count;
  54 };
  55
  56 struct _GdkEventFilter {
  57   GdkFilterFunc function;
  58   gpointer data;
  59 };
  60
  61 struct _GdkClientFilter {
  62   GdkAtom       type;
  63   GdkFilterFunc function;
  64   gpointer      data;
  65 };
  66
  67 typedef enum {
  68   GDK_DEBUG_MISC          = 1 << 0,
  69   GDK_DEBUG_EVENTS        = 1 << 1,
  70   GDK_DEBUG_DND           = 1 << 2,
  71   GDK_DEBUG_XIM           = 1 << 3,
  72   GDK_DEBUG_NOGRABS       = 1 << 4,
  73   GDK_DEBUG_COLORMAP      = 1 << 5,
  74   GDK_DEBUG_GDKRGB        = 1 << 6,
  75   GDK_DEBUG_GC            = 1 << 7,
  76   GDK_DEBUG_PIXMAP        = 1 << 8,
  77   GDK_DEBUG_IMAGE         = 1 << 9,
  78   GDK_DEBUG_INPUT         = 1 <<10,
  79   GDK_DEBUG_CURSOR        = 1 <<11,
  80   GDK_DEBUG_MULTIHEAD     = 1 <<12
  81 } GdkDebugFlag;
  82
  83 #ifndef GDK_DISABLE_DEPRECATED
  84
  85 typedef struct _GdkFontPrivate         GdkFontPrivate;
  86
  87 struct _GdkFontPrivate
  88 {
  89   GdkFont font;
  90   guint ref_count;
  91 };
  92
  93 #endif /* GDK_DISABLE_DEPRECATED */
  94
  95 extern GList            *_gdk_default_filters;
  96 extern GdkWindow        *_gdk_parent_root;
  97 extern gint              _gdk_error_code;
  98 extern gint              _gdk_error_warnings;
  99
 100 extern guint _gdk_debug_flags;
 101
 102 #ifdef G_ENABLE_DEBUG
 103
 104 #define GDK_NOTE(type,action)                G_STMT_START { \
 105     if (_gdk_debug_flags & GDK_DEBUG_##type)                \
 106        { action; };                          } G_STMT_END
 107
 108 #else /* !G_ENABLE_DEBUG */
 109
 110 #define GDK_NOTE(type,action)
 111
 112 #endif /* G_ENABLE_DEBUG */
 113
 114 /* Arg parsing */
 115
 116 typedef enum
 117 {
 118   GDK_ARG_STRING,
 119   GDK_ARG_INT,
 120   GDK_ARG_BOOL,
 121   GDK_ARG_NOBOOL,
 122   GDK_ARG_CALLBACK
 123 } GdkArgType;
 124
 125 typedef struct _GdkArgContext GdkArgContext;
 126 typedef struct _GdkArgDesc GdkArgDesc;
 127
 128 typedef void (*GdkArgFunc) (const char *name, const char *arg, gpointer data);
 129
 130 struct _GdkArgContext
 131 {
 132   GPtrArray *tables;
 133   gpointer cb_data;
 134 };
 135
 136 struct _GdkArgDesc
 137 {
 138   const char *name;
 139   GdkArgType type;
 140   gpointer location;
 141   GdkArgFunc callback;
 142 };
 143
 144 /* Event handling */
 145
 146 typedef struct _GdkEventPrivate GdkEventPrivate;
 147
 148 typedef enum
 149 {
 150   /* Following flag is set for events on the event queue during
 151    * translation and cleared afterwards.
 152    */
 153   GDK_EVENT_PENDING = 1 << 0
 154 } GdkEventFlags;
 155
 156 struct _GdkEventPrivate
 157 {
 158   GdkEvent event;
 159   guint    flags;
 160 };
 161
 162 extern GdkEventFunc   _gdk_event_func;    /* Callback for events */
 163 extern gpointer       _gdk_event_data;
 164 extern GDestroyNotify _gdk_event_notify;
 165
 166 extern GSList    *_gdk_displays;
 167 extern gchar     *_gdk_display_name;
 168
 169 extern const GdkPointerHooks *_gdk_current_pointer_hooks;
 170
 171 GdkEvent* _gdk_event_new (void);
 172
 173
 174 void      _gdk_events_queue  (GdkDisplay *display);
 175 GdkEvent* _gdk_event_unqueue (GdkDisplay *display);
 176
 177 GList* _gdk_event_queue_find_first  (GdkDisplay *display);
 178 void   _gdk_event_queue_remove_link (GdkDisplay *display,
 179                                      GList      *node);
 180 GList*  _gdk_event_queue_append     (GdkDisplay *display,
 181                                      GdkEvent   *event);
 182 void _gdk_event_button_generate     (GdkDisplay *display,
 183                                      GdkEvent   *event);
 184
 185 void gdk_synthesize_window_state (GdkWindow     *window,
 186                                   GdkWindowState unset_flags,
 187                                   GdkWindowState set_flags);
 188
 189 #define GDK_SCRATCH_IMAGE_WIDTH 256
 190 #define GDK_SCRATCH_IMAGE_HEIGHT 64
 191
 192 GdkImage* _gdk_image_new_for_depth (GdkScreen    *screen,
 193                                     GdkImageType  type,
 194                                     GdkVisual    *visual,
 195                                     gint          width,
 196                                     gint          height,
 197                                     gint          depth);
 198 GdkImage *_gdk_image_get_scratch (GdkScreen *screen,
 199                                   gint       width,
 200                                   gint       height,
 201                                   gint       depth,
 202                                   gint      *x,
 203                                   gint      *y);
 204
 205 /* Will most likely be exported in the future
 206  */
 207 void _gdk_draw_pixbuf            (GdkDrawable  *drawable,
 208                                   GdkGC        *gc,
 209                                   GdkPixbuf    *pixbuf,
 210                                   gint          src_x,
 211                                   gint          src_y,
 212                                   gint          dest_x,
 213                                   gint          dest_y,
 214                                   gint          width,
 215                                   gint          height,
 216                                   GdkRgbDither  dither,
 217                                   gint          x_dither,
 218                                   gint          y_dither);
 219 GdkImage *_gdk_drawable_copy_to_image (GdkDrawable  *drawable,
 220                                        GdkImage     *image,
 221                                        gint          src_x,
 222                                        gint          src_y,
 223                                        gint          dest_x,
 224                                        gint          dest_y,
 225                                        gint          width,
 226                                        gint          height);
 227
 228 /*************************************
 229  * Interfaces used by windowing code *
 230  *************************************/
 231
 232 void       _gdk_window_destroy           (GdkWindow   *window,
 233                                           gboolean     foreign_destroy);
 234 void       _gdk_window_clear_update_area (GdkWindow   *window);
 235
 236 void       _gdk_screen_close             (GdkScreen   *screen);
 237
 238 /*****************************************
 239  * Interfaces provided by windowing code *
 240  *****************************************/
 241
 242 /* Font/string functions implemented in module-specific code */
 243 gint _gdk_font_strlen (GdkFont *font, const char *str);
 244 void _gdk_font_destroy (GdkFont *font);
 245
 246 void _gdk_colormap_real_destroy (GdkColormap *colormap);
 247
 248 void _gdk_cursor_destroy (GdkCursor *cursor);
 249
 250 extern GdkArgDesc _gdk_windowing_args[];
 251 void     _gdk_windowing_init                    (gint       *argc,
 252                                                  gchar    ***argv);
 253 void     _gdk_windowing_set_default_display     (GdkDisplay *display);
 254
 255 void     _gdk_windowing_window_get_offsets      (GdkWindow  *window,
 256                                                  gint       *x_offset,
 257                                                  gint       *y_offset);
 258 void     _gdk_windowing_window_clear_area       (GdkWindow  *window,
 259                                                  gint        x,
 260                                                  gint        y,
 261                                                  gint        width,
 262                                                  gint        height);
 263 void     _gdk_windowing_window_clear_area_e     (GdkWindow  *window,
 264                                                  gint        x,
 265                                                  gint        y,
 266                                                  gint        width,
 267                                                  gint        height);
 268
 269 GdkWindow* _gdk_windowing_window_at_pointer  (GdkScreen       *screen,
 270                                               gint            *win_x,
 271                                               gint            *win_y);
 272 GdkWindow* _gdk_windowing_window_get_pointer (GdkWindow       *window,
 273                                               gint            *x,
 274                                               gint            *y,
 275                                               GdkModifierType *mask);
 276
 277 /* Return the number of bits-per-pixel for images of the specified depth. */
 278 gint _gdk_windowing_get_bits_for_depth (GdkDisplay *display,
 279                                         gint        depth);
 280
 281 #define GDK_WINDOW_IS_MAPPED(window) ((((GdkWindowObject*)window)->state & GDK_WINDOW_STATE_WITHDRAWN) == 0)
 282
 283 /* Called before processing updates for a window. This gives the windowing
 284  * layer a chance to save the region for later use in avoiding duplicate
 285  * exposes. The return value indicates whether the function has a saved
 286  * the region; if the result is TRUE, then the windowing layer is responsible
 287  * for destroying the region later.
 288  */
 289 gboolean _gdk_windowing_window_queue_antiexpose (GdkWindow  *window,
 290                                                  GdkRegion  *area);
 291
 292 /* Called to do the windowing system specific part of gdk_window_destroy(),
 293  *
 294  * window: The window being destroyed
 295  * recursing: If TRUE, then this is being called because a parent
 296  *            was destroyed. This generally means that the call to the windowing system
 297  *            to destroy the window can be omitted, since it will be destroyed as a result
 298  *            of the parent being destroyed. Unless @foreign_destroy
 299  *
 300  * foreign_destroy: If TRUE, the window or a parent was destroyed by some external
 301  *            agency. The window has already been destroyed and no windowing
 302  *            system calls should be made. (This may never happen for some
 303  *            windowing systems.)
 304  */
 305 void _gdk_windowing_window_destroy (GdkWindow *window,
 306                                     gboolean   recursing,
 307                                     gboolean   foreign_destroy);
 308
 309 /* Implementation types */
 310 GType _gdk_window_impl_get_type (void) G_GNUC_CONST;
 311 GType _gdk_pixmap_impl_get_type (void) G_GNUC_CONST;
 312
 313 /************************************
 314  * Initialization and exit routines *
 315  ************************************/
 316
 317 void _gdk_image_exit  (void);
 318 void _gdk_windowing_exit (void);
 319
 320 void _gdk_get_command_line_args (int    *argc,
 321                                  char ***argv);
 322
 323 #ifdef __cplusplus
 324 }
 325 #endif /* __cplusplus */
 326
 327 #endif /* __GDK_INTERNALS_H__ */