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