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