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   GDK_DEBUG_XINERAMA      = 1 <<13
  82 } GdkDebugFlag;
  83
  84 #ifndef GDK_DISABLE_DEPRECATED
  85
  86 typedef struct _GdkFontPrivate         GdkFontPrivate;
  87
  88 struct _GdkFontPrivate
  89 {
  90   GdkFont font;
  91   guint ref_count;
  92 };
  93
  94 #endif /* GDK_DISABLE_DEPRECATED */
  95
  96 extern GList            *_gdk_default_filters;
  97 extern GdkWindow        *_gdk_parent_root;
  98 extern gint              _gdk_error_code;
  99 extern gint              _gdk_error_warnings;
 100
 101 extern guint _gdk_debug_flags;
 102
 103 #ifdef G_ENABLE_DEBUG
 104
 105 #define GDK_NOTE(type,action)                G_STMT_START { \
 106     if (_gdk_debug_flags & GDK_DEBUG_##type)                \
 107        { action; };                          } G_STMT_END
 108
 109 #else /* !G_ENABLE_DEBUG */
 110
 111 #define GDK_NOTE(type,action)
 112
 113 #endif /* G_ENABLE_DEBUG */
 114
 115 /* Arg parsing */
 116
 117 typedef enum
 118 {
 119   GDK_ARG_STRING,
 120   GDK_ARG_INT,
 121   GDK_ARG_BOOL,
 122   GDK_ARG_NOBOOL,
 123   GDK_ARG_CALLBACK
 124 } GdkArgType;
 125
 126 typedef struct _GdkArgContext GdkArgContext;
 127 typedef struct _GdkArgDesc GdkArgDesc;
 128
 129 typedef void (*GdkArgFunc) (const char *name, const char *arg, gpointer data);
 130
 131 struct _GdkArgContext
 132 {
 133   GPtrArray *tables;
 134   gpointer cb_data;
 135 };
 136
 137 struct _GdkArgDesc
 138 {
 139   const char *name;
 140   GdkArgType type;
 141   gpointer location;
 142   GdkArgFunc callback;
 143 };
 144
 145 /* Event handling */
 146
 147 typedef struct _GdkEventPrivate GdkEventPrivate;
 148
 149 typedef enum
 150 {
 151   /* Following flag is set for events on the event queue during
 152    * translation and cleared afterwards.
 153    */
 154   GDK_EVENT_PENDING = 1 << 0
 155 } GdkEventFlags;
 156
 157 struct _GdkEventPrivate
 158 {
 159   GdkEvent   event;
 160   guint      flags;
 161   GdkScreen *screen;
 162 };
 163
 164 extern GdkEventFunc   _gdk_event_func;    /* Callback for events */
 165 extern gpointer       _gdk_event_data;
 166 extern GDestroyNotify _gdk_event_notify;
 167
 168 extern GSList    *_gdk_displays;
 169 extern gchar     *_gdk_display_name;
 170 extern gint       _gdk_screen_number;
 171 extern gchar     *_gdk_display_arg_name;
 172
 173 void      _gdk_events_queue  (GdkDisplay *display);
 174 GdkEvent* _gdk_event_unqueue (GdkDisplay *display);
 175
 176 GList* _gdk_event_queue_find_first  (GdkDisplay *display);
 177 void   _gdk_event_queue_remove_link (GdkDisplay *display,
 178                                      GList      *node);
 179 GList*  _gdk_event_queue_append     (GdkDisplay *display,
 180                                      GdkEvent   *event);
 181 void _gdk_event_button_generate     (GdkDisplay *display,
 182                                      GdkEvent   *event);
 183
 184 void gdk_synthesize_window_state (GdkWindow     *window,
 185                                   GdkWindowState unset_flags,
 186                                   GdkWindowState set_flags);
 187
 188 #define GDK_SCRATCH_IMAGE_WIDTH 256
 189 #define GDK_SCRATCH_IMAGE_HEIGHT 64
 190
 191 GdkImage* _gdk_image_new_for_depth (GdkScreen    *screen,
 192                                     GdkImageType  type,
 193                                     GdkVisual    *visual,
 194                                     gint          width,
 195                                     gint          height,
 196                                     gint          depth);
 197 GdkImage *_gdk_image_get_scratch (GdkScreen *screen,
 198                                   gint       width,
 199                                   gint       height,
 200                                   gint       depth,
 201                                   gint      *x,
 202                                   gint      *y);
 203
 204 GdkImage *_gdk_drawable_copy_to_image (GdkDrawable  *drawable,
 205                                        GdkImage     *image,
 206                                        gint          src_x,
 207                                        gint          src_y,
 208                                        gint          dest_x,
 209                                        gint          dest_y,
 210                                        gint          width,
 211                                        gint          height);
 212
 213 /* GC caching */
 214 GdkGC *_gdk_drawable_get_scratch_gc (GdkDrawable *drawable,
 215                                      gboolean     graphics_exposures);
 216
 217 /*************************************
 218  * Interfaces used by windowing code *
 219  *************************************/
 220
 221 void       _gdk_window_destroy           (GdkWindow   *window,
 222                                           gboolean     foreign_destroy);
 223 void       _gdk_window_clear_update_area (GdkWindow   *window);
 224
 225 void       _gdk_screen_close             (GdkScreen   *screen);
 226
 227 const char *_gdk_get_sm_client_id (void);
 228
 229 /*****************************************
 230  * Interfaces provided by windowing code *
 231  *****************************************/
 232
 233 /* Font/string functions implemented in module-specific code */
 234 gint _gdk_font_strlen (GdkFont *font, const char *str);
 235 void _gdk_font_destroy (GdkFont *font);
 236
 237 void _gdk_colormap_real_destroy (GdkColormap *colormap);
 238
 239 void _gdk_cursor_destroy (GdkCursor *cursor);
 240
 241 void     _gdk_windowing_init                    (void);
 242
 243 extern GOptionEntry _gdk_windowing_args[];
 244 void     _gdk_windowing_set_default_display     (GdkDisplay *display);
 245
 246 gchar *_gdk_windowing_substitute_screen_number (const gchar *display_name,
 247                                                 gint         screen_number);
 248
 249 void     _gdk_windowing_window_get_offsets      (GdkWindow  *window,
 250                                                  gint       *x_offset,
 251                                                  gint       *y_offset);
 252 void     _gdk_windowing_window_clear_area       (GdkWindow  *window,
 253                                                  gint        x,
 254                                                  gint        y,
 255                                                  gint        width,
 256                                                  gint        height);
 257 void     _gdk_windowing_window_clear_area_e     (GdkWindow  *window,
 258                                                  gint        x,
 259                                                  gint        y,
 260                                                  gint        width,
 261                                                  gint        height);
 262
 263 void       _gdk_windowing_get_pointer        (GdkDisplay       *display,
 264                                               GdkScreen       **screen,
 265                                               gint             *x,
 266                                               gint             *y,
 267                                               GdkModifierType  *mask);
 268 GdkWindow* _gdk_windowing_window_get_pointer (GdkDisplay       *display,
 269                                               GdkWindow        *window,
 270                                               gint             *x,
 271                                               gint             *y,
 272                                               GdkModifierType  *mask);
 273 GdkWindow* _gdk_windowing_window_at_pointer  (GdkDisplay       *display,
 274                                               gint             *win_x,
 275                                               gint             *win_y);
 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 /* Called when gdk_window_destroy() is called on a foreign window
 310  * or an ancestor of the foreign window. It should generally reparent
 311  * the window out of it's current heirarchy, hide it, and then
 312  * send a message to the owner requesting that the window be destroyed.
 313  */
 314 void _gdk_windowing_window_destroy_foreign (GdkWindow *window);
 315
 316 void _gdk_windowing_display_set_sm_client_id (GdkDisplay  *display,
 317                                               const gchar *sm_client_id);
 318
 319 /* Implementation types */
 320 GType _gdk_window_impl_get_type (void) G_GNUC_CONST;
 321 GType _gdk_pixmap_impl_get_type (void) G_GNUC_CONST;
 322
 323
 324 /* Queries the current foreground color of a GdkGC */
 325 void _gdk_windowing_gc_get_foreground (GdkGC    *gc,
 326                                        GdkColor *color);
 327
 328 /************************************
 329  * Initialization and exit routines *
 330  ************************************/
 331
 332 void _gdk_image_exit  (void);
 333 void _gdk_windowing_exit (void);
 334
 335 #ifdef __cplusplus
 336 }
 337 #endif /* __cplusplus */
 338
 339 #endif /* __GDK_INTERNALS_H__ */