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 Library 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  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library 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 1997-1999.  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
  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   GTK_CAN_DEFAULT      = 1 << 13,
  57   GTK_HAS_DEFAULT      = 1 << 14,
  58   GTK_HAS_GRAB         = 1 << 15,
  59   GTK_RC_STYLE         = 1 << 16,
  60   GTK_COMPOSITE_CHILD  = 1 << 17,
  61   GTK_NO_REPARENT      = 1 << 18,
  62   GTK_APP_PAINTABLE    = 1 << 19,
  63   GTK_RECEIVES_DEFAULT = 1 << 20
  64 } GtkWidgetFlags;
  65
  66 /* Macro for casting a pointer to a GtkWidget or GtkWidgetClass pointer.
  67  * Macros for testing whether `widget' or `klass' are of type GTK_TYPE_WIDGET.
  68  */
  69 #define GTK_TYPE_WIDGET                   (gtk_widget_get_type ())
  70 #define GTK_WIDGET(widget)                (GTK_CHECK_CAST ((widget), GTK_TYPE_WIDGET, GtkWidget))
  71 #define GTK_WIDGET_CLASS(klass)           (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_WIDGET, GtkWidgetClass))
  72 #define GTK_IS_WIDGET(widget)             (GTK_CHECK_TYPE ((widget), GTK_TYPE_WIDGET))
  73 #define GTK_IS_WIDGET_CLASS(klass)        (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_WIDGET))
  74 #define GTK_WIDGET_GET_CLASS(obj)         (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_WIDGET, GtkWidgetClass))
  75
  76 /* Macros for extracting various fields from GtkWidget and GtkWidgetClass.
  77  */
  78 #define GTK_WIDGET_TYPE(wid)              (GTK_OBJECT_TYPE (wid))
  79 #define GTK_WIDGET_STATE(wid)             (GTK_WIDGET (wid)->state)
  80 #define GTK_WIDGET_SAVED_STATE(wid)       (GTK_WIDGET (wid)->saved_state)
  81
  82 /* Macros for extracting the widget flags from GtkWidget.
  83  */
  84 #define GTK_WIDGET_FLAGS(wid)             (GTK_OBJECT_FLAGS (wid))
  85 #define GTK_WIDGET_TOPLEVEL(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_TOPLEVEL) != 0)
  86 #define GTK_WIDGET_NO_WINDOW(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_NO_WINDOW) != 0)
  87 #define GTK_WIDGET_REALIZED(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_REALIZED) != 0)
  88 #define GTK_WIDGET_MAPPED(wid)            ((GTK_WIDGET_FLAGS (wid) & GTK_MAPPED) != 0)
  89 #define GTK_WIDGET_VISIBLE(wid)           ((GTK_WIDGET_FLAGS (wid) & GTK_VISIBLE) != 0)
  90 #define GTK_WIDGET_DRAWABLE(wid)          (GTK_WIDGET_VISIBLE (wid) && GTK_WIDGET_MAPPED (wid))
  91 #define GTK_WIDGET_SENSITIVE(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_SENSITIVE) != 0)
  92 #define GTK_WIDGET_PARENT_SENSITIVE(wid)  ((GTK_WIDGET_FLAGS (wid) & GTK_PARENT_SENSITIVE) != 0)
  93 #define GTK_WIDGET_IS_SENSITIVE(wid)      (GTK_WIDGET_SENSITIVE (wid) && \
  94                                            GTK_WIDGET_PARENT_SENSITIVE (wid))
  95 #define GTK_WIDGET_CAN_FOCUS(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_CAN_FOCUS) != 0)
  96 #define GTK_WIDGET_HAS_FOCUS(wid)         ((GTK_WIDGET_FLAGS (wid) & GTK_HAS_FOCUS) != 0)
  97 #define GTK_WIDGET_CAN_DEFAULT(wid)       ((GTK_WIDGET_FLAGS (wid) & GTK_CAN_DEFAULT) != 0)
  98 #define GTK_WIDGET_HAS_DEFAULT(wid)       ((GTK_WIDGET_FLAGS (wid) & GTK_HAS_DEFAULT) != 0)
  99 #define GTK_WIDGET_HAS_GRAB(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_HAS_GRAB) != 0)
 100 #define GTK_WIDGET_RC_STYLE(wid)          ((GTK_WIDGET_FLAGS (wid) & GTK_RC_STYLE) != 0)
 101 #define GTK_WIDGET_COMPOSITE_CHILD(wid)   ((GTK_WIDGET_FLAGS (wid) & GTK_COMPOSITE_CHILD) != 0)
 102 #define GTK_WIDGET_APP_PAINTABLE(wid)     ((GTK_WIDGET_FLAGS (wid) & GTK_APP_PAINTABLE) != 0)
 103 #define GTK_WIDGET_RECEIVES_DEFAULT(wid)  ((GTK_WIDGET_FLAGS (wid) & GTK_RECEIVES_DEFAULT) != 0)
 104
 105 /* Macros for setting and clearing widget flags.
 106  */
 107 #define GTK_WIDGET_SET_FLAGS(wid,flag)    G_STMT_START{ (GTK_WIDGET_FLAGS (wid) |= (flag)); }G_STMT_END
 108 #define GTK_WIDGET_UNSET_FLAGS(wid,flag)  G_STMT_START{ (GTK_WIDGET_FLAGS (wid) &= ~(flag)); }G_STMT_END
 109
 110
 111
 112 typedef struct _GtkRequisition    GtkRequisition;
 113 typedef struct _GtkAllocation     GtkAllocation;
 114 typedef struct _GtkSelectionData GtkSelectionData;
 115 typedef struct _GtkWidgetClass    GtkWidgetClass;
 116 typedef struct _GtkWidgetAuxInfo  GtkWidgetAuxInfo;
 117 typedef struct _GtkWidgetShapeInfo GtkWidgetShapeInfo;
 118
 119 typedef void (*GtkCallback) (GtkWidget *widget,
 120                              gpointer   data);
 121
 122 /* A requisition is a desired amount of space which a
 123  *  widget may request.
 124  */
 125 struct _GtkRequisition
 126 {
 127   gint16 width;
 128   gint16 height;
 129 };
 130
 131 /* An allocation is a size and position. Where a widget
 132  *  can ask for a desired size, it is actually given
 133  *  this amount of space at the specified position.
 134  */
 135 struct _GtkAllocation
 136 {
 137   gint16 x;
 138   gint16 y;
 139   guint16 width;
 140   guint16 height;
 141 };
 142
 143 /* The contents of a selection are returned in a GtkSelectionData
 144    structure. selection/target identify the request.
 145    type specifies the type of the return; if length < 0, and
 146    the data should be ignored. This structure has object semantics -
 147    no fields should be modified directly, they should not be created
 148    directly, and pointers to them should not be stored beyond the duration of
 149    a callback. (If the last is changed, we'll need to add reference
 150    counting.) The time field gives the timestamp at which the data was sent. */
 151
 152 struct _GtkSelectionData
 153 {
 154   GdkAtom selection;
 155   GdkAtom target;
 156   GdkAtom type;
 157   gint    format;
 158   guchar *data;
 159   gint    length;
 160 };
 161
 162 /* The widget is the base of the tree for displayable objects.
 163  *  (A displayable object is one which takes up some amount
 164  *  of screen real estate). It provides a common base and interface
 165  *  which actual widgets must adhere to.
 166  */
 167 struct _GtkWidget
 168 {
 169   /* The object structure needs to be the first
 170    *  element in the widget structure in order for
 171    *  the object mechanism to work correctly. This
 172    *  allows a GtkWidget pointer to be cast to a
 173    *  GtkObject pointer.
 174    */
 175   GtkObject object;
 176
 177   /* 16 bits of internally used private flags.
 178    * this will be packed into the same 4 byte alignment frame that
 179    * state and saved_state go. we therefore don't waste any new
 180    * space on this.
 181    */
 182   guint16 private_flags;
 183
 184   /* The state of the widget. There are actually only
 185    *  5 widget states (defined in "gtkenums.h").
 186    */
 187   guint8 state;
 188
 189   /* The saved state of the widget. When a widgets state
 190    *  is changed to GTK_STATE_INSENSITIVE via
 191    *  "gtk_widget_set_state" or "gtk_widget_set_sensitive"
 192    *  the old state is kept around in this field. The state
 193    *  will be restored once the widget gets sensitive again.
 194    */
 195   guint8 saved_state;
 196
 197   /* The widgets name. If the widget does not have a name
 198    *  (the name is NULL), then its name (as returned by
 199    *  "gtk_widget_get_name") is its classes name.
 200    * Among other things, the widget name is used to determine
 201    *  the style to use for a widget.
 202    */
 203   gchar *name;
 204
 205   /* The style for the widget. The style contains the
 206    *  colors the widget should be drawn in for each state
 207    *  along with graphics contexts used to draw with and
 208    *  the font to use for text.
 209    */
 210   GtkStyle *style;
 211
 212   /* The widgets desired size.
 213    */
 214   GtkRequisition requisition;
 215
 216   /* The widgets allocated size.
 217    */
 218   GtkAllocation allocation;
 219
 220   /* The widgets window or its parent window if it does
 221    *  not have a window. (Which will be indicated by the
 222    *  GTK_NO_WINDOW flag being set).
 223    */
 224   GdkWindow *window;
 225
 226   /* The widgets parent.
 227    */
 228   GtkWidget *parent;
 229 };
 230
 231 struct _GtkWidgetClass
 232 {
 233   /* The object class structure needs to be the first
 234    *  element in the widget class structure in order for
 235    *  the class mechanism to work correctly. This allows a
 236    *  GtkWidgetClass pointer to be cast to a GtkObjectClass
 237    *  pointer.
 238    */
 239   GtkObjectClass parent_class;
 240
 241   /* The signal to emit when a widget of this class is activated,
 242    * gtk_widget_activate() handles the emission.
 243    * Implementation of this signal is optional.
 244    */
 245   guint activate_signal;
 246
 247   /* This signal is emitted  when a widget of this class is added
 248    * to a scrolling aware parent, gtk_widget_set_scroll_adjustments()
 249    * handles the emission.
 250    * Implementation of this signal is optional.
 251    */
 252   guint set_scroll_adjustments_signal;
 253
 254   /* basics */
 255   void (* show)                (GtkWidget      *widget);
 256   void (* show_all)            (GtkWidget      *widget);
 257   void (* hide)                (GtkWidget      *widget);
 258   void (* hide_all)            (GtkWidget      *widget);
 259   void (* map)                 (GtkWidget      *widget);
 260   void (* unmap)               (GtkWidget      *widget);
 261   void (* realize)             (GtkWidget      *widget);
 262   void (* unrealize)           (GtkWidget      *widget);
 263   void (* draw)                (GtkWidget      *widget,
 264                                 GdkRectangle   *area);
 265   void (* draw_focus)          (GtkWidget      *widget);
 266   void (* draw_default)        (GtkWidget      *widget);
 267   void (* size_request)        (GtkWidget      *widget,
 268                                 GtkRequisition *requisition);
 269   void (* size_allocate)       (GtkWidget      *widget,
 270                                 GtkAllocation  *allocation);
 271   void (* state_changed)       (GtkWidget      *widget,
 272                                 GtkStateType    previous_state);
 273   void (* parent_set)          (GtkWidget      *widget,
 274                                 GtkWidget      *previous_parent);
 275   void (* style_set)           (GtkWidget      *widget,
 276                                 GtkStyle       *previous_style);
 277
 278   /* accelerators */
 279   gint (* 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   /* explicit focus */
 291   void (* grab_focus)          (GtkWidget      *widget);
 292
 293   /* events */
 294   gint (* event)                   (GtkWidget          *widget,
 295                                     GdkEvent           *event);
 296   gint (* button_press_event)      (GtkWidget          *widget,
 297                                     GdkEventButton     *event);
 298   gint (* button_release_event)    (GtkWidget          *widget,
 299                                     GdkEventButton     *event);
 300   gint (* scroll_event)            (GtkWidget          *widget,
 301                                     GdkEventScroll     *event);
 302   gint (* motion_notify_event)     (GtkWidget          *widget,
 303                                     GdkEventMotion     *event);
 304   gint (* delete_event)            (GtkWidget          *widget,
 305                                     GdkEventAny        *event);
 306   gint (* destroy_event)           (GtkWidget          *widget,
 307                                     GdkEventAny        *event);
 308   gint (* expose_event)            (GtkWidget          *widget,
 309                                     GdkEventExpose     *event);
 310   gint (* key_press_event)         (GtkWidget          *widget,
 311                                     GdkEventKey        *event);
 312   gint (* key_release_event)       (GtkWidget          *widget,
 313                                     GdkEventKey        *event);
 314   gint (* enter_notify_event)      (GtkWidget          *widget,
 315                                     GdkEventCrossing   *event);
 316   gint (* leave_notify_event)      (GtkWidget          *widget,
 317                                     GdkEventCrossing   *event);
 318   gint (* configure_event)         (GtkWidget          *widget,
 319                                     GdkEventConfigure  *event);
 320   gint (* focus_in_event)          (GtkWidget          *widget,
 321                                     GdkEventFocus      *event);
 322   gint (* focus_out_event)         (GtkWidget          *widget,
 323                                     GdkEventFocus      *event);
 324   gint (* map_event)               (GtkWidget          *widget,
 325                                     GdkEventAny        *event);
 326   gint (* unmap_event)             (GtkWidget          *widget,
 327                                     GdkEventAny        *event);
 328   gint (* property_notify_event)   (GtkWidget          *widget,
 329                                     GdkEventProperty   *event);
 330   gint (* selection_clear_event)   (GtkWidget          *widget,
 331                                     GdkEventSelection  *event);
 332   gint (* selection_request_event) (GtkWidget          *widget,
 333                                     GdkEventSelection  *event);
 334   gint (* selection_notify_event)  (GtkWidget          *widget,
 335                                     GdkEventSelection  *event);
 336   gint (* proximity_in_event)      (GtkWidget          *widget,
 337                                     GdkEventProximity  *event);
 338   gint (* proximity_out_event)     (GtkWidget          *widget,
 339                                     GdkEventProximity  *event);
 340   gint (* visibility_notify_event)  (GtkWidget         *widget,
 341                                      GdkEventVisibility *event);
 342   gint (* client_event)            (GtkWidget          *widget,
 343                                     GdkEventClient     *event);
 344   gint (* no_expose_event)         (GtkWidget          *widget,
 345                                     GdkEventAny        *event);
 346
 347   /* selection */
 348   void (* selection_get)           (GtkWidget          *widget,
 349                                     GtkSelectionData   *selection_data,
 350                                     guint               info,
 351                                     guint               time);
 352   void (* selection_received)      (GtkWidget          *widget,
 353                                     GtkSelectionData   *selection_data,
 354                                     guint               time);
 355
 356   /* Source side drag signals */
 357   void (* drag_begin)              (GtkWidget          *widget,
 358                                     GdkDragContext     *context);
 359   void (* drag_end)                (GtkWidget          *widget,
 360                                     GdkDragContext     *context);
 361   void (* drag_data_get)           (GtkWidget          *widget,
 362                                     GdkDragContext     *context,
 363                                     GtkSelectionData   *selection_data,
 364                                     guint               info,
 365                                     guint               time);
 366   void (* drag_data_delete)        (GtkWidget          *widget,
 367                                     GdkDragContext     *context);
 368
 369   /* Target side drag signals */
 370   void (* drag_leave)              (GtkWidget          *widget,
 371                                     GdkDragContext     *context,
 372                                     guint               time);
 373   gboolean (* drag_motion)         (GtkWidget          *widget,
 374                                     GdkDragContext     *context,
 375                                     gint                x,
 376                                     gint                y,
 377                                     guint               time);
 378   gboolean (* drag_drop)           (GtkWidget          *widget,
 379                                     GdkDragContext     *context,
 380                                     gint                x,
 381                                     gint                y,
 382                                     guint               time);
 383   void (* drag_data_received)      (GtkWidget          *widget,
 384                                     GdkDragContext     *context,
 385                                     gint                x,
 386                                     gint                y,
 387                                     GtkSelectionData   *selection_data,
 388                                     guint               info,
 389                                     guint               time);
 390
 391   /* action signals */
 392   void (* debug_msg)               (GtkWidget          *widget,
 393                                     const gchar        *string);
 394
 395   /* Padding for future expandsion */
 396   GtkFunction pad1;
 397   GtkFunction pad2;
 398   GtkFunction pad3;
 399   GtkFunction pad4;
 400 };
 401
 402 struct _GtkWidgetAuxInfo
 403 {
 404   gint16  x;
 405   gint16  y;
 406   gint16 width;
 407   gint16 height;
 408 };
 409
 410 struct _GtkWidgetShapeInfo
 411 {
 412   gint16     offset_x;
 413   gint16     offset_y;
 414   GdkBitmap *shape_mask;
 415 };
 416
 417 GtkType    gtk_widget_get_type            (void);
 418 GtkWidget* gtk_widget_new                 (GtkType              type,
 419                                            const gchar         *first_arg_name,
 420                                            ...);
 421 GtkWidget* gtk_widget_newv                (GtkType              type,
 422                                            guint                nargs,
 423                                            GtkArg              *args);
 424 void       gtk_widget_ref                 (GtkWidget           *widget);
 425 void       gtk_widget_unref               (GtkWidget           *widget);
 426 void       gtk_widget_destroy             (GtkWidget           *widget);
 427 void       gtk_widget_destroyed           (GtkWidget           *widget,
 428                                            GtkWidget          **widget_pointer);
 429 void       gtk_widget_get                 (GtkWidget           *widget,
 430                                            GtkArg              *arg);
 431 void       gtk_widget_getv                (GtkWidget           *widget,
 432                                            guint                nargs,
 433                                            GtkArg              *args);
 434 void       gtk_widget_set                 (GtkWidget           *widget,
 435                                            const gchar         *first_arg_name,
 436                                            ...);
 437 void       gtk_widget_setv                (GtkWidget           *widget,
 438                                            guint                nargs,
 439                                            GtkArg              *args);
 440 void       gtk_widget_unparent            (GtkWidget           *widget);
 441 void       gtk_widget_show                (GtkWidget           *widget);
 442 void       gtk_widget_show_now            (GtkWidget           *widget);
 443 void       gtk_widget_hide                (GtkWidget           *widget);
 444 void       gtk_widget_show_all            (GtkWidget           *widget);
 445 void       gtk_widget_hide_all            (GtkWidget           *widget);
 446 void       gtk_widget_map                 (GtkWidget           *widget);
 447 void       gtk_widget_unmap               (GtkWidget           *widget);
 448 void       gtk_widget_realize             (GtkWidget           *widget);
 449 void       gtk_widget_unrealize           (GtkWidget           *widget);
 450
 451 /* Queuing draws */
 452 void       gtk_widget_queue_draw          (GtkWidget           *widget);
 453 void       gtk_widget_queue_draw_area     (GtkWidget           *widget,
 454                                            gint                 x,
 455                                            gint                 y,
 456                                            gint                 width,
 457                                            gint                 height);
 458 void       gtk_widget_queue_clear         (GtkWidget           *widget);
 459 void       gtk_widget_queue_clear_area    (GtkWidget           *widget,
 460                                            gint                 x,
 461                                            gint                 y,
 462                                            gint                 width,
 463                                            gint                 height);
 464
 465
 466 void       gtk_widget_queue_resize        (GtkWidget           *widget);
 467 void       gtk_widget_draw                (GtkWidget           *widget,
 468                                            GdkRectangle        *area);
 469 void       gtk_widget_draw_focus          (GtkWidget           *widget);
 470 void       gtk_widget_draw_default        (GtkWidget           *widget);
 471 void       gtk_widget_size_request        (GtkWidget           *widget,
 472                                            GtkRequisition      *requisition);
 473 void       gtk_widget_size_allocate       (GtkWidget           *widget,
 474                                            GtkAllocation       *allocation);
 475 void       gtk_widget_get_child_requisition (GtkWidget         *widget,
 476                                              GtkRequisition    *requisition);
 477 void       gtk_widget_add_accelerator     (GtkWidget           *widget,
 478                                            const gchar         *accel_signal,
 479                                            GtkAccelGroup       *accel_group,
 480                                            guint                accel_key,
 481                                            guint                accel_mods,
 482                                            GtkAccelFlags        accel_flags);
 483 void       gtk_widget_remove_accelerator  (GtkWidget           *widget,
 484                                            GtkAccelGroup       *accel_group,
 485                                            guint                accel_key,
 486                                            guint                accel_mods);
 487 void       gtk_widget_remove_accelerators (GtkWidget           *widget,
 488                                            const gchar         *accel_signal,
 489                                            gboolean             visible_only);
 490 guint      gtk_widget_accelerator_signal  (GtkWidget           *widget,
 491                                            GtkAccelGroup       *accel_group,
 492                                            guint                accel_key,
 493                                            guint                accel_mods);
 494 void       gtk_widget_lock_accelerators   (GtkWidget           *widget);
 495 void       gtk_widget_unlock_accelerators (GtkWidget           *widget);
 496 gboolean   gtk_widget_accelerators_locked (GtkWidget           *widget);
 497 gint       gtk_widget_event               (GtkWidget           *widget,
 498                                            GdkEvent            *event);
 499
 500 gboolean   gtk_widget_activate               (GtkWidget        *widget);
 501 gboolean   gtk_widget_set_scroll_adjustments (GtkWidget        *widget,
 502                                               GtkAdjustment    *hadjustment,
 503                                               GtkAdjustment    *vadjustment);
 504
 505 void       gtk_widget_reparent            (GtkWidget           *widget,
 506                                            GtkWidget           *new_parent);
 507 void       gtk_widget_popup               (GtkWidget           *widget,
 508                                            gint                 x,
 509                                            gint                 y);
 510 gint       gtk_widget_intersect           (GtkWidget           *widget,
 511                                            GdkRectangle        *area,
 512                                            GdkRectangle        *intersection);
 513
 514 void       gtk_widget_grab_focus          (GtkWidget           *widget);
 515 void       gtk_widget_grab_default        (GtkWidget           *widget);
 516
 517 void       gtk_widget_set_name            (GtkWidget           *widget,
 518                                            const gchar         *name);
 519 gchar*     gtk_widget_get_name            (GtkWidget           *widget);
 520 void       gtk_widget_set_state           (GtkWidget           *widget,
 521                                            GtkStateType         state);
 522 void       gtk_widget_set_sensitive       (GtkWidget           *widget,
 523                                            gboolean             sensitive);
 524 void       gtk_widget_set_app_paintable   (GtkWidget           *widget,
 525                                            gboolean             app_paintable);
 526 void       gtk_widget_set_parent          (GtkWidget           *widget,
 527                                            GtkWidget           *parent);
 528 void       gtk_widget_set_parent_window   (GtkWidget           *widget,
 529                                            GdkWindow           *parent_window);
 530 GdkWindow *gtk_widget_get_parent_window   (GtkWidget           *widget);
 531 void       gtk_widget_set_uposition       (GtkWidget           *widget,
 532                                            gint                 x,
 533                                            gint                 y);
 534 void       gtk_widget_set_usize           (GtkWidget           *widget,
 535                                            gint                 width,
 536                                            gint                 height);
 537 void       gtk_widget_set_events          (GtkWidget           *widget,
 538                                            gint                 events);
 539 void       gtk_widget_add_events          (GtkWidget           *widget,
 540                                            gint                 events);
 541 void       gtk_widget_set_extension_events (GtkWidget           *widget,
 542                                             GdkExtensionMode    mode);
 543
 544 GdkExtensionMode gtk_widget_get_extension_events (GtkWidget     *widget);
 545 GtkWidget*   gtk_widget_get_toplevel    (GtkWidget      *widget);
 546 GtkWidget*   gtk_widget_get_ancestor    (GtkWidget      *widget,
 547                                          GtkType        widget_type);
 548 GdkColormap* gtk_widget_get_colormap    (GtkWidget      *widget);
 549 GdkVisual*   gtk_widget_get_visual      (GtkWidget      *widget);
 550
 551 /* The following functions must not be called on an already
 552  * realized widget. Because it is possible that somebody
 553  * can call get_colormap() or get_visual() and save the
 554  * result, these functions are probably only safe to
 555  * call in a widget's init() function.
 556  */
 557 void         gtk_widget_set_colormap    (GtkWidget      *widget,
 558                                          GdkColormap    *colormap);
 559 void         gtk_widget_set_visual      (GtkWidget      *widget,
 560                                          GdkVisual      *visual);
 561
 562
 563 gint         gtk_widget_get_events      (GtkWidget      *widget);
 564 void         gtk_widget_get_pointer     (GtkWidget      *widget,
 565                                          gint           *x,
 566                                          gint           *y);
 567
 568 gint         gtk_widget_is_ancestor     (GtkWidget      *widget,
 569                                          GtkWidget      *ancestor);
 570
 571 /* Hide widget and return TRUE.
 572  */
 573 gint       gtk_widget_hide_on_delete    (GtkWidget      *widget);
 574
 575 /* Widget styles.
 576  */
 577 void       gtk_widget_set_style         (GtkWidget      *widget,
 578                                          GtkStyle       *style);
 579 void       gtk_widget_set_rc_style      (GtkWidget      *widget);
 580 void       gtk_widget_ensure_style      (GtkWidget      *widget);
 581 GtkStyle*  gtk_widget_get_style         (GtkWidget      *widget);
 582 void       gtk_widget_restore_default_style (GtkWidget  *widget);
 583
 584 void       gtk_widget_modify_style      (GtkWidget      *widget,
 585                                          GtkRcStyle     *style);
 586
 587 /* handle composite names for GTK_COMPOSITE_CHILD widgets,
 588  * the returned name is newly allocated.
 589  */
 590 void   gtk_widget_set_composite_name    (GtkWidget      *widget,
 591                                          const gchar    *name);
 592 gchar* gtk_widget_get_composite_name    (GtkWidget      *widget);
 593
 594 /* Descend recursively and set rc-style on all widgets without user styles */
 595 void       gtk_widget_reset_rc_styles   (GtkWidget      *widget);
 596
 597 /* Push/pop pairs, to change default values upon a widget's creation.
 598  * This will override the values that got set by the
 599  * gtk_widget_set_default_* () functions.
 600  */
 601 void         gtk_widget_push_style           (GtkStyle   *style);
 602 void         gtk_widget_push_colormap        (GdkColormap *cmap);
 603 void         gtk_widget_push_visual          (GdkVisual  *visual);
 604 void         gtk_widget_push_composite_child (void);
 605 void         gtk_widget_pop_composite_child  (void);
 606 void         gtk_widget_pop_style            (void);
 607 void         gtk_widget_pop_colormap         (void);
 608 void         gtk_widget_pop_visual           (void);
 609
 610 /* Set certain default values to be used at widget creation time.
 611  */
 612 void         gtk_widget_set_default_style    (GtkStyle    *style);
 613 void         gtk_widget_set_default_colormap (GdkColormap *colormap);
 614 void         gtk_widget_set_default_visual   (GdkVisual   *visual);
 615 GtkStyle*    gtk_widget_get_default_style    (void);
 616 GdkColormap* gtk_widget_get_default_colormap (void);
 617 GdkVisual*   gtk_widget_get_default_visual   (void);
 618
 619 /* Counterpart to gdk_window_shape_combine_mask.
 620  */
 621 void         gtk_widget_shape_combine_mask (GtkWidget *widget,
 622                                             GdkBitmap *shape_mask,
 623                                             gint       offset_x,
 624                                             gint       offset_y);
 625
 626 /* internal function */
 627 void         gtk_widget_reset_shapes       (GtkWidget *widget);
 628
 629 /* Compute a widget's path in the form "GtkWindow.MyLabel", and
 630  * return newly alocated strings.
 631  */
 632 void         gtk_widget_path               (GtkWidget *widget,
 633                                             guint     *path_length,
 634                                             gchar    **path,
 635                                             gchar    **path_reversed);
 636 void         gtk_widget_class_path         (GtkWidget *widget,
 637                                             guint     *path_length,
 638                                             gchar    **path,
 639                                             gchar    **path_reversed);
 640
 641 #if     defined (GTK_TRACE_OBJECTS) && defined (__GNUC__)
 642 #  define gtk_widget_ref gtk_object_ref
 643 #  define gtk_widget_unref gtk_object_unref
 644 #endif  /* GTK_TRACE_OBJECTS && __GNUC__ */
 645
 646
 647
 648 #ifdef __cplusplus
 649 }
 650 #endif /* __cplusplus */
 651
 652
 653 #endif /* __GTK_WIDGET_H__ */