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/gdkprivate.h>
  31
  32 #ifndef __GDK_INTERNALS_H__
  33 #define __GDK_INTERNALS_H__
  34
  35 /**********************
  36  * General Facilities *
  37  **********************/
  38
  39 /* Debugging support */
  40
  41 typedef struct _GdkColorInfo           GdkColorInfo;
  42 typedef struct _GdkEventFilter         GdkEventFilter;
  43 typedef struct _GdkClientFilter        GdkClientFilter;
  44
  45 typedef enum {
  46   GDK_COLOR_WRITEABLE = 1 << 0
  47 } GdkColorInfoFlags;
  48
  49 struct _GdkColorInfo
  50 {
  51   GdkColorInfoFlags flags;
  52   guint ref_count;
  53 };
  54
  55 struct _GdkEventFilter {
  56   GdkFilterFunc function;
  57   gpointer data;
  58 };
  59
  60 struct _GdkClientFilter {
  61   GdkAtom       type;
  62   GdkFilterFunc function;
  63   gpointer      data;
  64 };
  65
  66 typedef enum {
  67   GDK_DEBUG_MISC          = 1 << 0,
  68   GDK_DEBUG_EVENTS        = 1 << 1,
  69   GDK_DEBUG_DND           = 1 << 2,
  70   GDK_DEBUG_XIM           = 1 << 3,
  71   GDK_DEBUG_NOGRABS       = 1 << 4,
  72   GDK_DEBUG_COLORMAP      = 1 << 5,
  73   GDK_DEBUG_GDKRGB        = 1 << 6,
  74   GDK_DEBUG_GC            = 1 << 7,
  75   GDK_DEBUG_PIXMAP        = 1 << 8,
  76   GDK_DEBUG_IMAGE         = 1 << 9,
  77   GDK_DEBUG_INPUT         = 1 <<10,
  78   GDK_DEBUG_CURSOR        = 1 <<11,
  79   GDK_DEBUG_MULTIHEAD     = 1 <<12
  80 } GdkDebugFlag;
  81
  82 #ifndef GDK_DISABLE_DEPRECATED
  83
  84 typedef struct _GdkFontPrivate         GdkFontPrivate;
  85
  86 struct _GdkFontPrivate
  87 {
  88   GdkFont font;
  89   guint ref_count;
  90 };
  91
  92 #endif /* GDK_DISABLE_DEPRECATED */
  93
  94 extern GList            *_gdk_default_filters;
  95 extern GdkWindow        *_gdk_parent_root;
  96 extern gint              _gdk_error_code;
  97 extern gint              _gdk_error_warnings;
  98
  99 extern guint _gdk_debug_flags;
 100
 101 #ifdef G_ENABLE_DEBUG
 102
 103 #define GDK_NOTE(type,action)                G_STMT_START { \
 104     if (_gdk_debug_flags & GDK_DEBUG_##type)                \
 105        { action; };                          } G_STMT_END
 106
 107 #else /* !G_ENABLE_DEBUG */
 108
 109 #define GDK_NOTE(type,action)
 110
 111 #endif /* G_ENABLE_DEBUG */
 112
 113 /* Arg parsing */
 114
 115 typedef enum
 116 {
 117   GDK_ARG_STRING,
 118   GDK_ARG_INT,
 119   GDK_ARG_BOOL,
 120   GDK_ARG_NOBOOL,
 121   GDK_ARG_CALLBACK
 122 } GdkArgType;
 123
 124 typedef struct _GdkArgContext GdkArgContext;
 125 typedef struct _GdkArgDesc GdkArgDesc;
 126
 127 typedef void (*GdkArgFunc) (const char *name, const char *arg, gpointer data);
 128
 129 struct _GdkArgContext
 130 {
 131   GPtrArray *tables;
 132   gpointer cb_data;
 133 };
 134
 135 struct _GdkArgDesc
 136 {
 137   const char *name;
 138   GdkArgType type;
 139   gpointer location;
 140   GdkArgFunc callback;
 141 };
 142
 143 /* Event handling */
 144
 145 extern GdkEventFunc   _gdk_event_func;    /* Callback for events */
 146 extern gpointer       _gdk_event_data;
 147 extern GDestroyNotify _gdk_event_notify;
 148
 149 extern GdkDevice *_gdk_core_pointer;
 150
 151 extern GSList    *_gdk_displays;
 152 extern gchar     *_gdk_display_name;
 153
 154 GdkEvent* _gdk_event_new (void);
 155
 156
 157 void      _gdk_events_queue  (GdkDisplay *display);
 158 GdkEvent* _gdk_event_unqueue (GdkDisplay *display);
 159
 160 GList* _gdk_event_queue_find_first  (GdkDisplay *display);
 161 void   _gdk_event_queue_remove_link (GdkDisplay *display,
 162                                      GList      *node);
 163 GList*  _gdk_event_queue_append     (GdkDisplay *display,
 164                                      GdkEvent   *event);
 165 void _gdk_event_button_generate     (GdkDisplay *display,
 166                                      GdkEvent   *event);
 167
 168 void gdk_synthesize_window_state (GdkWindow     *window,
 169                                   GdkWindowState unset_flags,
 170                                   GdkWindowState set_flags);
 171
 172 #define GDK_SCRATCH_IMAGE_WIDTH 256
 173 #define GDK_SCRATCH_IMAGE_HEIGHT 64
 174
 175 GdkImage* _gdk_image_new_for_depth (GdkScreen    *screen,
 176                                     GdkImageType  type,
 177                                     GdkVisual    *visual,
 178                                     gint          width,
 179                                     gint          height,
 180                                     gint          depth);
 181 GdkImage *_gdk_image_get_scratch (GdkScreen *screen,
 182                                   gint       width,
 183                                   gint       height,
 184                                   gint       depth,
 185                                   gint      *x,
 186                                   gint      *y);
 187
 188 /* Will most likely be exported in the future
 189  */
 190 void _gdk_draw_pixbuf            (GdkDrawable  *drawable,
 191                                   GdkGC        *gc,
 192                                   GdkPixbuf    *pixbuf,
 193                                   gint          src_x,
 194                                   gint          src_y,
 195                                   gint          dest_x,
 196                                   gint          dest_y,
 197                                   gint          width,
 198                                   gint          height,
 199                                   GdkRgbDither  dither,
 200                                   gint          x_dither,
 201                                   gint          y_dither);
 202 GdkImage *_gdk_drawable_copy_to_image (GdkDrawable  *drawable,
 203                                        GdkImage     *image,
 204                                        gint          src_x,
 205                                        gint          src_y,
 206                                        gint          dest_x,
 207                                        gint          dest_y,
 208                                        gint          width,
 209                                        gint          height);
 210
 211 /*************************************
 212  * Interfaces used by windowing code *
 213  *************************************/
 214
 215 void       _gdk_window_destroy           (GdkWindow   *window,
 216                                           gboolean     foreign_destroy);
 217 void       _gdk_window_clear_update_area (GdkWindow   *window);
 218
 219
 220 /*****************************************
 221  * Interfaces provided by windowing code *
 222  *****************************************/
 223
 224 /* Font/string functions implemented in module-specific code */
 225 gint _gdk_font_strlen (GdkFont *font, const char *str);
 226 void _gdk_font_destroy (GdkFont *font);
 227
 228 void _gdk_colormap_real_destroy (GdkColormap *colormap);
 229
 230 void _gdk_cursor_destroy (GdkCursor *cursor);
 231
 232 extern GdkArgDesc _gdk_windowing_args[];
 233 void         _gdk_windowing_init                   (void);
 234
 235 void     _gdk_windowing_window_get_offsets      (GdkWindow  *window,
 236                                                  gint       *x_offset,
 237                                                  gint       *y_offset);
 238 void     _gdk_windowing_window_clear_area       (GdkWindow  *window,
 239                                                  gint        x,
 240                                                  gint        y,
 241                                                  gint        width,
 242                                                  gint        height);
 243 void     _gdk_windowing_window_clear_area_e     (GdkWindow  *window,
 244                                                  gint        x,
 245                                                  gint        y,
 246                                                  gint        width,
 247                                                  gint        height);
 248
 249 GdkWindow* _gdk_windowing_window_at_pointer  (GdkScreen       *screen,
 250                                               gint            *win_x,
 251                                               gint            *win_y);
 252 GdkWindow* _gdk_windowing_window_get_pointer (GdkWindow       *window,
 253                                               gint            *x,
 254                                               gint            *y,
 255                                               GdkModifierType *mask);
 256
 257 /* Return the number of bits-per-pixel for images of the specified depth. */
 258 gint _gdk_windowing_get_bits_for_depth (GdkDisplay *display,
 259                                         gint        depth);
 260
 261 #define GDK_WINDOW_IS_MAPPED(window) ((((GdkWindowObject*)window)->state & GDK_WINDOW_STATE_WITHDRAWN) == 0)
 262
 263 /* Called before processing updates for a window. This gives the windowing
 264  * layer a chance to save the region for later use in avoiding duplicate
 265  * exposes. The return value indicates whether the function has a saved
 266  * the region; if the result is TRUE, then the windowing layer is responsible
 267  * for destroying the region later.
 268  */
 269 gboolean _gdk_windowing_window_queue_antiexpose (GdkWindow  *window,
 270                                                  GdkRegion  *area);
 271
 272 /* Called to do the windowing system specific part of gdk_window_destroy(),
 273  *
 274  * window: The window being destroyed
 275  * recursing: If TRUE, then this is being called because a parent
 276  *            was destroyed. This generally means that the call to the windowing system
 277  *            to destroy the window can be omitted, since it will be destroyed as a result
 278  *            of the parent being destroyed. Unless @foreign_destroy
 279  *
 280  * foreign_destroy: If TRUE, the window or a parent was destroyed by some external
 281  *            agency. The window has already been destroyed and no windowing
 282  *            system calls should be made. (This may never happen for some
 283  *            windowing systems.)
 284  */
 285 void _gdk_windowing_window_destroy (GdkWindow *window,
 286                                     gboolean   recursing,
 287                                     gboolean   foreign_destroy);
 288
 289 /* Implementation types */
 290 GType _gdk_window_impl_get_type (void) G_GNUC_CONST;
 291 GType _gdk_pixmap_impl_get_type (void) G_GNUC_CONST;
 292
 293 /************************************
 294  * Initialization and exit routines *
 295  ************************************/
 296
 297 void _gdk_image_exit  (void);
 298 void _gdk_windowing_exit (void);
 299
 300 void _gdk_get_command_line_args (int    *argc,
 301                                  char ***argv);
 302
 303 #ifdef __cplusplus
 304 }
 305 #endif /* __cplusplus */
 306
 307 #endif /* __GDK_INTERNALS_H__ */