Pileus Git - ~andy/gtk/blob - gtk/gtkwidget.h

   1 /* GTK - The GIMP Toolkit
   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 #ifndef __GTK_WIDGET_H__
  28 #define __GTK_WIDGET_H__
  29
  30 #include <gdk/gdk.h>
  31 #include <gtk/gtkaccelgroup.h>
  32 #include <gtk/gtkobject.h>
  33 #include <gtk/gtkadjustment.h>
  34 #include <gtk/gtkstyle.h>
  35 #include <atk/atkobject.h>
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif /* __cplusplus */
  40
  41
  42 /* The flags that are used by GtkWidget on top of the
  43  * flags field of GtkObject.
  44  */
  45 typedef enum
  46 {
  47   GTK_TOPLEVEL         = 1 << 4,
  48   GTK_NO_WINDOW        = 1 << 5,
  49   GTK_REALIZED         = 1 << 6,
  50   GTK_MAPPED           = 1 << 7,
  51   GTK_VISIBLE          = 1 << 8,
  52   GTK_SENSITIVE        = 1 << 9,
  53   GTK_PARENT_SENSITIVE = 1 << 10,
  54   GTK_CAN_FOCUS        = 1 << 11,
  55   GTK_HAS_FOCUS        = 1 << 12,
  56
  57   /* widget is allowed to receive the default via gtk_widget_grab_default
  58    * and will reserve space to draw the default if possible
  59    */
  60   GTK_CAN_DEFAULT      = 1 << 13,
  61
  62   /* the widget currently is receiving the default action and should be drawn
  63    * appropriately if possible
  64    */
  65   GTK_HAS_DEFAULT      = 1 << 14,
  66
  67   GTK_HAS_GRAB         = 1 << 15,
  68   GTK_RC_STYLE         = 1 << 16,
  69   GTK_COMPOSITE_CHILD  = 1 << 17,
  70   GTK_NO_REPARENT      = 1 << 18,
  71   GTK_APP_PAINTABLE    = 1 << 19,
  72
  73   /* the widget when focused will receive the default action and have
  74    * HAS_DEFAULT set even if there is a different widget set as default
  75    */
  76   GTK_RECEIVES_DEFAULT = 1 << 20,
  77
  78   GTK_DOUBLE_BUFFERED  = 1 << 21
  79 } GtkWidgetFlags;
  80
  81 /* Kinds of widget-specific help */
  82 typedef enum
  83 {
  84   GTK_WIDGET_HELP_TOOLTIP,
  85   GTK_WIDGET_HELP_WHATS_THIS
  86 } GtkWidgetHelpType;
  87
  88 /* Macro for casting a pointer to a GtkWidget or GtkWidgetClass pointer.
  89  * Macros for testing whether `widget' or `klass' are of type GTK_TYPE_WIDGET.
  90  */
  91 #define GTK_TYPE_WIDGET                   (gtk_widget_get_type ())
  92 #define GTK_WIDGET(widget)                (GTK_CHECK_CAST ((widget), GTK_TYPE_WIDGET, GtkWidget))
  93 #define GTK_WIDGET_CLASS(klass)           (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_WIDGET, GtkWidgetClass))
  94 #define GTK_IS_WIDGET(widget)             (GTK_CHECK_TYPE ((widget), GTK_TYPE_WIDGET))
  95 #define GTK_IS_WIDGET_CLASS(klass)        (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_WIDGET))
  96 #define GTK_WIDGET_GET_CLASS(obj)         (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_WIDGET, GtkWidgetClass))
  97
  98 /* Macros for extracting various fields from GtkWidget and GtkWidgetClass.
  99  */
 100 #define GTK_WIDGET_TYPE(wid)              (GTK_OBJECT_TYPE (wid))
 101 #define GTK_WIDGET_STATE(wid)             (GTK_WIDGET (wid)->state)
 102 #define GTK_WIDGET_SAVED_STATE(wid)       (GTK_WIDGET (wid)->saved_state)
 103
 104 /* Macros for extracting the widget flags from GtkWidget.
 105  */
 106 #define GTK_WIDGET_FLAGS(wid)             (GTK_OBJECT_FLAGS (wid))
 107 #define GTK_WIDGET_TOPLEVEL(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_TOPLEVEL) != 0)
 108 #define GTK_WIDGET_NO_WINDOW(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_NO_WINDOW) != 0)
 109 #define GTK_WIDGET_REALIZED(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_REALIZED) != 0)
 110 #define GTK_WIDGET_MAPPED(wid)            ((GTK_WIDGET_FLAGS (wid) & GTK_MAPPED) != 0)
 111 #define GTK_WIDGET_VISIBLE(wid)           ((GTK_WIDGET_FLAGS (wid) & GTK_VISIBLE) != 0)
 112 #define GTK_WIDGET_DRAWABLE(wid)          (GTK_WIDGET_VISIBLE (wid) && GTK_WIDGET_MAPPED (wid))
 113 #define GTK_WIDGET_SENSITIVE(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_SENSITIVE) != 0)
 114 #define GTK_WIDGET_PARENT_SENSITIVE(wid)  ((GTK_WIDGET_FLAGS (wid) & GTK_PARENT_SENSITIVE) != 0)
 115 #define GTK_WIDGET_IS_SENSITIVE(wid)      (GTK_WIDGET_SENSITIVE (wid) && \
 116                                            GTK_WIDGET_PARENT_SENSITIVE (wid))
 117 #define GTK_WIDGET_CAN_FOCUS(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_CAN_FOCUS) != 0)
 118 #define GTK_WIDGET_HAS_FOCUS(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_HAS_FOCUS) != 0)
 119 #define GTK_WIDGET_CAN_DEFAULT(wid)       ((GTK_WIDGET_FLAGS (wid) & GTK_CAN_DEFAULT) != 0)
 120 #define GTK_WIDGET_HAS_DEFAULT(wid)       ((GTK_WIDGET_FLAGS (wid) & GTK_HAS_DEFAULT) != 0)
 121 #define GTK_WIDGET_HAS_GRAB(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_HAS_GRAB) != 0)
 122 #define GTK_WIDGET_RC_STYLE(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_RC_STYLE) != 0)
 123 #define GTK_WIDGET_COMPOSITE_CHILD(wid)   ((GTK_WIDGET_FLAGS (wid) & GTK_COMPOSITE_CHILD) != 0)
 124 #define GTK_WIDGET_APP_PAINTABLE(wid)     ((GTK_WIDGET_FLAGS (wid) & GTK_APP_PAINTABLE) != 0)
 125 #define GTK_WIDGET_RECEIVES_DEFAULT(wid)  ((GTK_WIDGET_FLAGS (wid) & GTK_RECEIVES_DEFAULT) != 0)
 126 #define GTK_WIDGET_DOUBLE_BUFFERED(wid)   ((GTK_WIDGET_FLAGS (wid) & GTK_DOUBLE_BUFFERED) != 0)
 127
 128 /* Macros for setting and clearing widget flags.
 129  */
 130 #define GTK_WIDGET_SET_FLAGS(wid,flag)    G_STMT_START{ (GTK_WIDGET_FLAGS (wid) |= (flag)); }G_STMT_END
 131 #define GTK_WIDGET_UNSET_FLAGS(wid,flag)  G_STMT_START{ (GTK_WIDGET_FLAGS (wid) &= ~(flag)); }G_STMT_END
 132
 133
 134 /* forward declaration to avoid excessive includes (and concurrent includes)
 135  */
 136 typedef struct _GtkRequisition     GtkRequisition;
 137 typedef struct _GdkRectangle       GtkAllocation;
 138 typedef struct _GtkSelectionData   GtkSelectionData;
 139 typedef struct _GtkWidgetClass     GtkWidgetClass;
 140 typedef struct _GtkWidgetAuxInfo   GtkWidgetAuxInfo;
 141 typedef struct _GtkWidgetShapeInfo GtkWidgetShapeInfo;
 142 typedef void     (*GtkCallback)        (GtkWidget        *widget,
 143                                         gpointer          data);
 144
 145 /* A requisition is a desired amount of space which a
 146  *  widget may request.
 147  */
 148 struct _GtkRequisition
 149 {
 150   gint width;
 151   gint height;
 152 };
 153
 154 /* The widget is the base of the tree for displayable objects.
 155  *  (A displayable object is one which takes up some amount
 156  *  of screen real estate). It provides a common base and interface
 157  *  which actual widgets must adhere to.
 158  */
 159 struct _GtkWidget
 160 {
 161   /* The object structure needs to be the first
 162    *  element in the widget structure in order for
 163    *  the object mechanism to work correctly. This
 164    *  allows a GtkWidget pointer to be cast to a
 165    *  GtkObject pointer.
 166    */
 167   GtkObject object;
 168
 169   /* 16 bits of internally used private flags.
 170    * this will be packed into the same 4 byte alignment frame that
 171    * state and saved_state go. we therefore don't waste any new
 172    * space on this.
 173    */
 174   guint16 private_flags;
 175
 176   /* The state of the widget. There are actually only
 177    *  5 widget states (defined in "gtkenums.h").
 178    */
 179   guint8 state;
 180
 181   /* The saved state of the widget. When a widgets state
 182    *  is changed to GTK_STATE_INSENSITIVE via
 183    *  "gtk_widget_set_state" or "gtk_widget_set_sensitive"
 184    *  the old state is kept around in this field. The state
 185    *  will be restored once the widget gets sensitive again.
 186    */
 187   guint8 saved_state;
 188
 189   /* The widgets name. If the widget does not have a name
 190    *  (the name is NULL), then its name (as returned by
 191    *  "gtk_widget_get_name") is its classes name.
 192    * Among other things, the widget name is used to determine
 193    *  the style to use for a widget.
 194    */
 195   gchar *name;
 196
 197   /* The style for the widget. The style contains the
 198    *  colors the widget should be drawn in for each state
 199    *  along with graphics contexts used to draw with and
 200    *  the font to use for text.
 201    */
 202   GtkStyle *style;
 203
 204   /* The widgets desired size.
 205    */
 206   GtkRequisition requisition;
 207
 208   /* The widgets allocated size.
 209    */
 210   GtkAllocation allocation;
 211
 212   /* The widgets window or its parent window if it does
 213    *  not have a window. (Which will be indicated by the
 214    *  GTK_NO_WINDOW flag being set).
 215    */
 216   GdkWindow *window;
 217
 218   /* The widgets parent.
 219    */
 220   GtkWidget *parent;
 221 };
 222
 223 struct _GtkWidgetClass
 224 {
 225   /* The object class structure needs to be the first
 226    *  element in the widget class structure in order for
 227    *  the class mechanism to work correctly. This allows a
 228    *  GtkWidgetClass pointer to be cast to a GtkObjectClass
 229    *  pointer.
 230    */
 231   GtkObjectClass parent_class;
 232
 233   /* The signal to emit when a widget of this class is activated,
 234    * gtk_widget_activate() handles the emission.
 235    * Implementation of this signal is optional.
 236    */
 237   guint activate_signal;
 238
 239   /* This signal is emitted  when a widget of this class is added
 240    * to a scrolling aware parent, gtk_widget_set_scroll_adjustments()
 241    * handles the emission.
 242    * Implementation of this signal is optional.
 243    */
 244   guint set_scroll_adjustments_signal;
 245
 246   /* seldomly overidden */
 247   void (*dispatch_child_properties_changed) (GtkWidget   *widget,
 248                                              guint        n_pspecs,
 249                                              GParamSpec **pspecs);
 250
 251   /* basics */
 252   void (* show)                (GtkWidget        *widget);
 253   void (* show_all)            (GtkWidget        *widget);
 254   void (* hide)                (GtkWidget        *widget);
 255   void (* hide_all)            (GtkWidget        *widget);
 256   void (* map)                 (GtkWidget        *widget);
 257   void (* unmap)               (GtkWidget        *widget);
 258   void (* realize)             (GtkWidget        *widget);
 259   void (* unrealize)           (GtkWidget        *widget);
 260   void (* size_request)        (GtkWidget        *widget,
 261                                 GtkRequisition   *requisition);
 262   void (* size_allocate)       (GtkWidget        *widget,
 263                                 GtkAllocation    *allocation);
 264   void (* state_changed)       (GtkWidget        *widget,
 265                                 GtkStateType      previous_state);
 266   void (* parent_set)          (GtkWidget        *widget,
 267                                 GtkWidget        *previous_parent);
 268   void (* hierarchy_changed)   (GtkWidget        *widget);
 269   void (* style_set)           (GtkWidget        *widget,
 270                                 GtkStyle         *previous_style);
 271   void (* direction_changed)   (GtkWidget        *widget,
 272                                 GtkTextDirection  previous_direction);
 273   void (* grab_notify)         (GtkWidget        *widget,
 274                                 gboolean          was_grabbed);
 275   void (* child_notify)        (GtkWidget        *widget,
 276                                 GParamSpec       *pspec);
 277
 278   /* accelerators */
 279   void (* add_accelerator)     (GtkWidget      *widget,
 280                                 guint           accel_signal_id,
 281                                 GtkAccelGroup  *accel_group,
 282                                 guint           accel_key,
 283                                 GdkModifierType accel_mods,
 284                                 GtkAccelFlags   accel_flags);
 285   void (* remove_accelerator)  (GtkWidget      *widget,
 286                                 GtkAccelGroup  *accel_group,
 287                                 guint           accel_key,
 288                                 GdkModifierType accel_mods);
 289
 290   /* Mnemonics */
 291   gboolean (* mnemonic_activate) (GtkWidget    *widget,
 292                                   gboolean      group_cycling);
 293
 294   /* explicit focus */
 295   void     (* grab_focus)      (GtkWidget        *widget);
 296   gboolean (* focus)           (GtkWidget        *widget,
 297                                 GtkDirectionType  direction);
 298
 299   /* events */
 300   gboolean (* event)                    (GtkWidget           *widget,
 301                                          GdkEvent            *event);
 302   gboolean (* button_press_event)       (GtkWidget           *widget,
 303                                          GdkEventButton      *event);
 304   gboolean (* button_release_event)     (GtkWidget           *widget,
 305                                          GdkEventButton      *event);
 306   gboolean (* scroll_event)             (GtkWidget           *widget,
 307                                          GdkEventScroll      *event);
 308   gboolean (* motion_notify_event)      (GtkWidget           *widget,
 309                                          GdkEventMotion      *event);
 310   gboolean (* delete_event)             (GtkWidget           *widget,
 311                                          GdkEventAny         *event);
 312   gboolean (* destroy_event)            (GtkWidget           *widget,
 313                                          GdkEventAny         *event);
 314   gboolean (* expose_event)             (GtkWidget           *widget,
 315                                          GdkEventExpose      *event);
 316   gboolean (* key_press_event)          (GtkWidget           *widget,
 317                                          GdkEventKey         *event);
 318   gboolean (* key_release_event)        (GtkWidget           *widget,
 319                                          GdkEventKey         *event);
 320   gboolean (* enter_notify_event)       (GtkWidget           *widget,
 321                                          GdkEventCrossing    *event);
 322   gboolean (* leave_notify_event)       (GtkWidget           *widget,
 323                                          GdkEventCrossing    *event);
 324   gboolean (* configure_event)          (GtkWidget           *widget,
 325                                          GdkEventConfigure   *event);
 326   gboolean (* focus_in_event)           (GtkWidget           *widget,
 327                                          GdkEventFocus       *event);
 328   gboolean (* focus_out_event)          (GtkWidget           *widget,
 329                                          GdkEventFocus       *event);
 330   gboolean (* map_event)                (GtkWidget           *widget,
 331                                          GdkEventAny         *event);
 332   gboolean (* unmap_event)              (GtkWidget           *widget,
 333                                          GdkEventAny         *event);
 334   gboolean (* property_notify_event)    (GtkWidget           *widget,
 335                                          GdkEventProperty    *event);
 336   gboolean (* selection_clear_event)    (GtkWidget           *widget,
 337                                          GdkEventSelection   *event);
 338   gboolean (* selection_request_event)  (GtkWidget           *widget,
 339                                          GdkEventSelection   *event);
 340   gboolean (* selection_notify_event)   (GtkWidget           *widget,
 341                                          GdkEventSelection   *event);
 342   gboolean (* proximity_in_event)       (GtkWidget           *widget,
 343                                          GdkEventProximity   *event);
 344   gboolean (* proximity_out_event)      (GtkWidget           *widget,
 345                                          GdkEventProximity   *event);
 346   gboolean (* visibility_notify_event)  (GtkWidget           *widget,
 347                                          GdkEventVisibility  *event);
 348   gboolean (* client_event)             (GtkWidget           *widget,
 349                                          GdkEventClient      *event);
 350   gboolean (* no_expose_event)          (GtkWidget           *widget,
 351                                          GdkEventAny         *event);
 352   gboolean (* window_state_event)       (GtkWidget           *widget,
 353                                          GdkEventWindowState *event);
 354
 355   /* selection */
 356   void (* selection_get)           (GtkWidget          *widget,
 357                                     GtkSelectionData   *selection_data,
 358                                     guint               info,
 359                                     guint               time);
 360   void (* selection_received)      (GtkWidget          *widget,
 361                                     GtkSelectionData   *selection_data,
 362                                     guint               time);
 363
 364   /* Source side drag signals */
 365   void (* drag_begin)              (GtkWidget          *widget,
 366                                     GdkDragContext     *context);
 367   void (* drag_end)                (GtkWidget          *widget,
 368                                     GdkDragContext     *context);
 369   void (* drag_data_get)           (GtkWidget          *widget,
 370                                     GdkDragContext     *context,
 371                                     GtkSelectionData   *selection_data,
 372                                     guint               info,
 373                                     guint               time);
 374   void (* drag_data_delete)        (GtkWidget          *widget,
 375                                     GdkDragContext     *context);
 376
 377   /* Target side drag signals */
 378   void (* drag_leave)              (GtkWidget          *widget,
 379                                     GdkDragContext     *context,
 380                                     guint               time);
 381   gboolean (* drag_motion)         (GtkWidget          *widget,
 382                                     GdkDragContext     *context,
 383                                     gint                x,
 384                                     gint                y,
 385                                     guint               time);
 386   gboolean (* drag_drop)           (GtkWidget          *widget,
 387                                     GdkDragContext     *context,
 388                                     gint                x,
 389                                     gint                y,
 390                                     guint               time);
 391   void (* drag_data_received)      (GtkWidget          *widget,
 392                                     GdkDragContext     *context,
 393                                     gint                x,
 394                                     gint                y,
 395                                     GtkSelectionData   *selection_data,
 396                                     guint               info,
 397                                     guint               time);
 398
 399   /* Signals used only for keybindings */
 400   void (* popup_menu)              (GtkWidget          *widget);
 401
 402   /* If a widget has multiple tooltips/whatsthis, it should show the
 403    * one for the current focus location, or if that doesn't make
 404    * sense, should cycle through them showing each tip alongside
 405    * whatever piece of the widget it applies to.
 406    */
 407   void (* show_help)               (GtkWidget          *widget,
 408                                     GtkWidgetHelpType   help_type);
 409
 410   /* accessibility support
 411    */
 412   AtkObject*   (* get_accessible)  (GtkWidget          *widget);
 413
 414   /* Padding for future expansion */
 415   GtkFunction pad1;
 416   GtkFunction pad2;
 417   GtkFunction pad3;
 418   GtkFunction pad4;
 419 };
 420
 421 struct _GtkWidgetAuxInfo
 422 {
 423   gint x;
 424   gint y;
 425   gint width;
 426   gint height;
 427   guint x_set : 1;
 428   guint y_set : 1;
 429 };
 430
 431 struct _GtkWidgetShapeInfo
 432 {
 433   gint16     offset_x;
 434   gint16     offset_y;
 435   GdkBitmap *shape_mask;
 436 };
 437
 438 GtkType    gtk_widget_get_type            (void) G_GNUC_CONST;
 439 GtkWidget* gtk_widget_new                 (GtkType              type,
 440                                            const gchar         *first_property_name,
 441                                            ...);
 442 GtkWidget* gtk_widget_ref                 (GtkWidget           *widget);
 443 void       gtk_widget_unref               (GtkWidget           *widget);
 444 void       gtk_widget_destroy             (GtkWidget           *widget);
 445 void       gtk_widget_destroyed           (GtkWidget           *widget,
 446                                            GtkWidget          **widget_pointer);
 447 #ifndef GTK_DISABLE_DEPRECATED
 448 void       gtk_widget_set                 (GtkWidget           *widget,
 449                                            const gchar         *first_property_name,
 450                                            ...);
 451 #endif /* GTK_DISABLE_DEPRECATED */
 452 void       gtk_widget_unparent            (GtkWidget           *widget);
 453 void       gtk_widget_show                (GtkWidget           *widget);
 454 void       gtk_widget_show_now            (GtkWidget           *widget);
 455 void       gtk_widget_hide                (GtkWidget           *widget);
 456 void       gtk_widget_show_all            (GtkWidget           *widget);
 457 void       gtk_widget_hide_all            (GtkWidget           *widget);
 458 void       gtk_widget_map                 (GtkWidget           *widget);
 459 void       gtk_widget_unmap               (GtkWidget           *widget);
 460 void       gtk_widget_realize             (GtkWidget           *widget);
 461 void       gtk_widget_unrealize           (GtkWidget           *widget);
 462
 463 /* Queuing draws */
 464 void       gtk_widget_queue_draw          (GtkWidget           *widget);
 465 void       gtk_widget_queue_draw_area     (GtkWidget           *widget,
 466                                            gint                 x,
 467                                            gint                 y,
 468                                            gint                 width,
 469                                            gint                 height);
 470 #ifndef GTK_DISABLE_DEPRECATED
 471 void       gtk_widget_queue_clear         (GtkWidget           *widget);
 472 void       gtk_widget_queue_clear_area    (GtkWidget           *widget,
 473                                            gint                 x,
 474                                            gint                 y,
 475                                            gint                 width,
 476                                            gint                 height);
 477 #endif /* GTK_DISABLE_DEPRECATED */
 478
 479
 480 void       gtk_widget_queue_resize        (GtkWidget           *widget);
 481 #ifndef GTK_DISABLE_DEPRECATED
 482 void       gtk_widget_draw                (GtkWidget           *widget,
 483                                            GdkRectangle        *area);
 484 #endif /* GTK_DISABLE_DEPRECATED */
 485 void       gtk_widget_size_request        (GtkWidget           *widget,
 486                                            GtkRequisition      *requisition);
 487 void       gtk_widget_size_allocate       (GtkWidget           *widget,
 488                                            GtkAllocation       *allocation);
 489 void       gtk_widget_get_child_requisition (GtkWidget         *widget,
 490                                              GtkRequisition    *requisition);
 491 void       gtk_widget_add_accelerator     (GtkWidget           *widget,
 492                                            const gchar         *accel_signal,
 493                                            GtkAccelGroup       *accel_group,
 494                                            guint                accel_key,
 495                                            guint                accel_mods,
 496                                            GtkAccelFlags        accel_flags);
 497 void       gtk_widget_remove_accelerator  (GtkWidget           *widget,
 498                                            GtkAccelGroup       *accel_group,
 499                                            guint                accel_key,
 500                                            guint                accel_mods);
 501 void       gtk_widget_remove_accelerators (GtkWidget           *widget,
 502                                            const gchar         *accel_signal,
 503                                            gboolean             visible_only);
 504 guint      gtk_widget_accelerator_signal  (GtkWidget           *widget,
 505                                            GtkAccelGroup       *accel_group,
 506                                            guint                accel_key,
 507                                            guint                accel_mods);
 508 void       gtk_widget_lock_accelerators   (GtkWidget           *widget);
 509 void       gtk_widget_unlock_accelerators (GtkWidget           *widget);
 510 gboolean   gtk_widget_accelerators_locked (GtkWidget           *widget);
 511 gboolean   gtk_widget_mnemonic_activate   (GtkWidget           *widget,
 512                                            gboolean             group_cycling);
 513 gboolean   gtk_widget_event               (GtkWidget           *widget,
 514                                            GdkEvent            *event);
 515 gint       gtk_widget_send_expose         (GtkWidget           *widget,
 516                                            GdkEvent            *event);
 517
 518 gboolean   gtk_widget_activate               (GtkWidget        *widget);
 519 gboolean   gtk_widget_set_scroll_adjustments (GtkWidget        *widget,
 520                                               GtkAdjustment    *hadjustment,
 521                                               GtkAdjustment    *vadjustment);
 522
 523 void       gtk_widget_reparent            (GtkWidget           *widget,
 524                                            GtkWidget           *new_parent);
 525 gboolean   gtk_widget_intersect           (GtkWidget           *widget,
 526                                            GdkRectangle        *area,
 527                                            GdkRectangle        *intersection);
 528 GdkRegion *gtk_widget_region_intersect    (GtkWidget           *widget,
 529                                            GdkRegion           *region);
 530
 531 void    gtk_widget_freeze_child_notify    (GtkWidget           *widget);
 532 void    gtk_widget_child_notify           (GtkWidget           *widget,
 533                                            const gchar         *child_property);
 534 void    gtk_widget_thaw_child_notify      (GtkWidget           *widget);
 535
 536 gboolean   gtk_widget_is_focus            (GtkWidget           *widget);
 537 void       gtk_widget_grab_focus          (GtkWidget           *widget);
 538 void       gtk_widget_grab_default        (GtkWidget           *widget);
 539
 540 void       gtk_widget_set_name            (GtkWidget           *widget,
 541                                            const gchar         *name);
 542 G_CONST_RETURN gchar* gtk_widget_get_name (GtkWidget           *widget);
 543 void       gtk_widget_set_state           (GtkWidget           *widget,
 544                                            GtkStateType         state);
 545 void       gtk_widget_set_sensitive       (GtkWidget           *widget,
 546                                            gboolean             sensitive);
 547 void       gtk_widget_set_app_paintable   (GtkWidget           *widget,
 548                                            gboolean             app_paintable);
 549 void       gtk_widget_set_double_buffered (GtkWidget           *widget,
 550                                            gboolean             double_buffered);
 551 void       gtk_widget_set_parent          (GtkWidget           *widget,
 552                                            GtkWidget           *parent);
 553 void       gtk_widget_set_parent_window   (GtkWidget           *widget,
 554                                            GdkWindow           *parent_window);
 555 GtkWidget *gtk_widget_get_parent          (GtkWidget           *widget);
 556 GdkWindow *gtk_widget_get_parent_window   (GtkWidget           *widget);
 557 gboolean   gtk_widget_child_focus         (GtkWidget           *widget,
 558                                            GtkDirectionType     direction);
 559 void       gtk_widget_set_uposition       (GtkWidget           *widget,
 560                                            gint                 x,
 561                                            gint                 y);
 562 void       gtk_widget_set_usize           (GtkWidget           *widget,
 563                                            gint                 width,
 564                                            gint                 height);
 565 void       gtk_widget_get_usize           (GtkWidget           *widget,
 566                                            gint                *width,
 567                                            gint                *height);
 568 void       gtk_widget_set_events          (GtkWidget           *widget,
 569                                            gint                 events);
 570 void       gtk_widget_add_events          (GtkWidget           *widget,
 571                                            gint                 events);
 572 void       gtk_widget_set_extension_events (GtkWidget           *widget,
 573                                             GdkExtensionMode    mode);
 574
 575 GdkExtensionMode gtk_widget_get_extension_events (GtkWidget     *widget);
 576 GtkWidget*   gtk_widget_get_toplevel    (GtkWidget      *widget);
 577 GtkWidget*   gtk_widget_get_ancestor    (GtkWidget      *widget,
 578                                          GtkType        widget_type);
 579 GdkColormap* gtk_widget_get_colormap    (GtkWidget      *widget);
 580 GdkVisual*   gtk_widget_get_visual      (GtkWidget      *widget);
 581
 582
 583 /* Accessibility support */
 584 AtkObject*       gtk_widget_get_accessible               (GtkWidget          *widget);
 585
 586 /* The following functions must not be called on an already
 587  * realized widget. Because it is possible that somebody
 588  * can call get_colormap() or get_visual() and save the
 589  * result, these functions are probably only safe to
 590  * call in a widget's init() function.
 591  */
 592 void         gtk_widget_set_colormap    (GtkWidget      *widget,
 593                                          GdkColormap    *colormap);
 594
 595 gint         gtk_widget_get_events      (GtkWidget      *widget);
 596 void         gtk_widget_get_pointer     (GtkWidget      *widget,
 597                                          gint           *x,
 598                                          gint           *y);
 599
 600 gboolean     gtk_widget_is_ancestor     (GtkWidget      *widget,
 601                                          GtkWidget      *ancestor);
 602
 603 /* Hide widget and return TRUE.
 604  */
 605 gboolean     gtk_widget_hide_on_delete  (GtkWidget      *widget);
 606
 607 /* Widget styles.
 608  */
 609 void       gtk_widget_set_style         (GtkWidget      *widget,
 610                                          GtkStyle       *style);
 611 void       gtk_widget_set_rc_style      (GtkWidget      *widget);
 612 void       gtk_widget_ensure_style      (GtkWidget      *widget);
 613 GtkStyle*  gtk_widget_get_style         (GtkWidget      *widget);
 614 void       gtk_widget_restore_default_style (GtkWidget  *widget);
 615
 616 void        gtk_widget_modify_style       (GtkWidget            *widget,
 617                                            GtkRcStyle           *style);
 618 GtkRcStyle *gtk_widget_get_modifier_style (GtkWidget            *widget);
 619 void        gtk_widget_modify_fg          (GtkWidget            *widget,
 620                                            GtkStateType          state,
 621                                            GdkColor             *color);
 622 void        gtk_widget_modify_bg          (GtkWidget            *widget,
 623                                            GtkStateType          state,
 624                                            GdkColor             *color);
 625 void        gtk_widget_modify_text        (GtkWidget            *widget,
 626                                            GtkStateType          state,
 627                                            GdkColor             *color);
 628 void        gtk_widget_modify_base        (GtkWidget            *widget,
 629                                            GtkStateType          state,
 630                                            GdkColor             *color);
 631 void        gtk_widget_modify_font        (GtkWidget            *widget,
 632                                            PangoFontDescription *font_desc);
 633
 634 PangoContext *gtk_widget_create_pango_context (GtkWidget   *widget);
 635 PangoContext *gtk_widget_get_pango_context    (GtkWidget   *widget);
 636 PangoLayout  *gtk_widget_create_pango_layout  (GtkWidget   *widget,
 637                                                const gchar *text);
 638
 639 GdkPixbuf    *gtk_widget_render_icon          (GtkWidget   *widget,
 640                                                const gchar *stock_id,
 641                                                GtkIconSize  size,
 642                                                const gchar *detail);
 643
 644 /* handle composite names for GTK_COMPOSITE_CHILD widgets,
 645  * the returned name is newly allocated.
 646  */
 647 void   gtk_widget_set_composite_name    (GtkWidget      *widget,
 648                                          const gchar    *name);
 649 gchar* gtk_widget_get_composite_name    (GtkWidget      *widget);
 650
 651 /* Descend recursively and set rc-style on all widgets without user styles */
 652 void       gtk_widget_reset_rc_styles   (GtkWidget      *widget);
 653
 654 /* Push/pop pairs, to change default values upon a widget's creation.
 655  * This will override the values that got set by the
 656  * gtk_widget_set_default_* () functions.
 657  */
 658 void         gtk_widget_push_style           (GtkStyle   *style);
 659 void         gtk_widget_push_colormap        (GdkColormap *cmap);
 660 void         gtk_widget_push_composite_child (void);
 661 void         gtk_widget_pop_composite_child  (void);
 662 void         gtk_widget_pop_style            (void);
 663 void         gtk_widget_pop_colormap         (void);
 664
 665 /* widget style properties
 666  */
 667 void gtk_widget_class_install_style_property        (GtkWidgetClass     *klass,
 668                                                      GParamSpec         *pspec);
 669 void gtk_widget_class_install_style_property_parser (GtkWidgetClass     *klass,
 670                                                      GParamSpec         *pspec,
 671                                                      GtkRcPropertyParser parser);
 672 void gtk_widget_style_get_property (GtkWidget        *widget,
 673                                     const gchar    *property_name,
 674                                     GValue           *value);
 675 void gtk_widget_style_get_valist   (GtkWidget        *widget,
 676                                     const gchar    *first_property_name,
 677                                     va_list         var_args);
 678 void gtk_widget_style_get          (GtkWidget        *widget,
 679                                     const gchar    *first_property_name,
 680                                     ...);
 681
 682
 683 /* Set certain default values to be used at widget creation time.
 684  */
 685 void         gtk_widget_set_default_style    (GtkStyle    *style);
 686 void         gtk_widget_set_default_colormap (GdkColormap *colormap);
 687 GtkStyle*    gtk_widget_get_default_style    (void);
 688 GdkColormap* gtk_widget_get_default_colormap (void);
 689 GdkVisual*   gtk_widget_get_default_visual   (void);
 690
 691 /* Functions for setting directionality for widgets
 692  */
 693
 694 void             gtk_widget_set_direction         (GtkWidget        *widget,
 695                                                    GtkTextDirection  dir);
 696 GtkTextDirection gtk_widget_get_direction         (GtkWidget        *widget);
 697
 698 void             gtk_widget_set_default_direction (GtkTextDirection  dir);
 699 GtkTextDirection gtk_widget_get_default_direction (void);
 700
 701 /* Counterpart to gdk_window_shape_combine_mask.
 702  */
 703 void         gtk_widget_shape_combine_mask (GtkWidget *widget,
 704                                             GdkBitmap *shape_mask,
 705                                             gint       offset_x,
 706                                             gint       offset_y);
 707
 708 /* internal function */
 709 void         gtk_widget_reset_shapes       (GtkWidget *widget);
 710
 711 /* Compute a widget's path in the form "GtkWindow.MyLabel", and
 712  * return newly alocated strings.
 713  */
 714 void         gtk_widget_path               (GtkWidget *widget,
 715                                             guint     *path_length,
 716                                             gchar    **path,
 717                                             gchar    **path_reversed);
 718 void         gtk_widget_class_path         (GtkWidget *widget,
 719                                             guint     *path_length,
 720                                             gchar    **path,
 721                                             gchar    **path_reversed);
 722
 723 GtkRequisition *gtk_requisition_copy (const GtkRequisition *requisition);
 724 void            gtk_requisition_free (GtkRequisition       *requisition);
 725
 726 #if     defined (GTK_TRACE_OBJECTS) && defined (__GNUC__)
 727 #  define gtk_widget_ref gtk_object_ref
 728 #  define gtk_widget_unref gtk_object_unref
 729 #endif  /* GTK_TRACE_OBJECTS && __GNUC__ */
 730
 731 GtkWidgetAuxInfo *_gtk_widget_get_aux_info (GtkWidget *widget,
 732                                             gboolean   create);
 733
 734 #ifdef __cplusplus
 735 }
 736 #endif /* __cplusplus */
 737
 738
 739 #endif /* __GTK_WIDGET_H__ */