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gtk2/gtk/gtkwidget.h
Tim Janik 9258a7aecb new function to perform the same actions as gtk_list_remove_items, but 
Thu Feb  5 02:13:08 1998  Tim Janik  <timj@gimp.org>

        * gtk/gtklist.h:
        * gtk/gtklist.c (gtk_list_remove_items_no_unref): new function
          to perform the same actions as gtk_list_remove_items, but
          supply the removed widgets with an additional reference count.

        * gtk/gtkmain.c (gtk_main_iteration_do): ignore events
          with event_widget == NULL, since they are bogus events
          from destroyed GdkWindows, exept for the case where
          event->type==GDK_PROPERTY_NOTIFY. Always handle expired
          timeout functions when returning from this function.

        * gtk/gtkwidget.c (gtk_widget_event): ignore GDK_EXPOSE events
          if event->window == NULL. Also, if this function couldn't handle
          the event for any reason (including failing assumptions), make
          the return value to look as if the event had been handled to
          avoid further processing (and warnings).

        * gtk/gtkwidget.h:
        * gtk/gtkwidget.c: remove gtk_widget_sink, because there is
          no point in providing such a function.

        * gdk/gdk.c (gdk_init): changed options `-name' and `-class'
          to `--name' and `--class', because the old names would
          confuse getopt(). these arguments have been introduced in the
          changes from gtk+970916 to gtk+970925 without a ChangeLog entry,
          changing argument names is painful, it would be nice if people
          would care about compatibility and consistency in the first place!
1998-02-05 03:53:41 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GTK_WIDGET_H__
#define __GTK_WIDGET_H__
#include <gdk/gdk.h>
#include <gtk/gtkaccelerator.h>
#include <gtk/gtkobject.h>
#include <gtk/gtkstyle.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* The flags that are used by GtkWidget on top of the
* flags field of GtkObject.
*/
enum
{
GTK_TOPLEVEL = 1 << 4,
GTK_NO_WINDOW = 1 << 5,
GTK_REALIZED = 1 << 6,
GTK_MAPPED = 1 << 7,
GTK_VISIBLE = 1 << 8,
GTK_SENSITIVE = 1 << 9,
GTK_PARENT_SENSITIVE = 1 << 10,
GTK_CAN_FOCUS = 1 << 11,
GTK_HAS_FOCUS = 1 << 12,
GTK_CAN_DEFAULT = 1 << 13,
GTK_HAS_DEFAULT = 1 << 14,
GTK_HAS_GRAB = 1 << 15,
GTK_BASIC = 1 << 16
};
/* Macro for casting a pointer to a GtkWidget pointer.
*/
#define GTK_WIDGET(wid) GTK_CHECK_CAST ((wid), gtk_widget_get_type (), GtkWidget)
/* Macro for casting the klass field of a widget to a GtkWidgetClass pointer.
*/
#define GTK_WIDGET_CLASS(klass) GTK_CHECK_CLASS_CAST ((klass), gtk_widget_get_type (), GtkWidgetClass)
/* Macros for extracting various fields from GtkWidget and GtkWidgetClass.
*/
#define GTK_WIDGET_TYPE(wid) (GTK_OBJECT_TYPE (wid))
#define GTK_WIDGET_STATE(wid) (GTK_WIDGET (wid)->state)
#define GTK_WIDGET_SAVED_STATE(wid) (GTK_WIDGET (wid)->saved_state)
/* Macros for extracting the widget flags from GtkWidget.
*/
#define GTK_WIDGET_FLAGS(wid) (GTK_OBJECT_FLAGS (wid))
#define GTK_WIDGET_TOPLEVEL(wid) (GTK_WIDGET_FLAGS (wid) & GTK_TOPLEVEL)
#define GTK_WIDGET_NO_WINDOW(wid) (GTK_WIDGET_FLAGS (wid) & GTK_NO_WINDOW)
#define GTK_WIDGET_REALIZED(wid) (GTK_WIDGET_FLAGS (wid) & GTK_REALIZED)
#define GTK_WIDGET_MAPPED(wid) (GTK_WIDGET_FLAGS (wid) & GTK_MAPPED)
#define GTK_WIDGET_VISIBLE(wid) (GTK_WIDGET_FLAGS (wid) & GTK_VISIBLE)
#define GTK_WIDGET_DRAWABLE(wid) (GTK_WIDGET_VISIBLE (wid) && GTK_WIDGET_MAPPED (wid))
#define GTK_WIDGET_SENSITIVE(wid) (GTK_WIDGET_FLAGS (wid) & GTK_SENSITIVE)
#define GTK_WIDGET_PARENT_SENSITIVE(wid) (GTK_WIDGET_FLAGS (wid) & GTK_PARENT_SENSITIVE)
#define GTK_WIDGET_IS_SENSITIVE(wid) ((GTK_WIDGET_SENSITIVE (wid) && \
GTK_WIDGET_PARENT_SENSITIVE (wid)) != 0)
#define GTK_WIDGET_CAN_FOCUS(wid) (GTK_WIDGET_FLAGS (wid) & GTK_CAN_FOCUS)
#define GTK_WIDGET_HAS_FOCUS(wid) (GTK_WIDGET_FLAGS (wid) & GTK_HAS_FOCUS)
#define GTK_WIDGET_CAN_DEFAULT(wid) (GTK_WIDGET_FLAGS (wid) & GTK_CAN_DEFAULT)
#define GTK_WIDGET_HAS_DEFAULT(wid) (GTK_WIDGET_FLAGS (wid) & GTK_HAS_DEFAULT)
#define GTK_WIDGET_HAS_GRAB(wid) (GTK_WIDGET_FLAGS (wid) & GTK_HAS_GRAB)
#define GTK_WIDGET_BASIC(wid) (GTK_WIDGET_FLAGS (wid) & GTK_BASIC)
/* Macros for setting and clearing widget flags.
*/
#define GTK_WIDGET_SET_FLAGS(wid,flag) G_STMT_START{ (GTK_WIDGET_FLAGS (wid) |= (flag)); }G_STMT_END
#define GTK_WIDGET_UNSET_FLAGS(wid,flag) G_STMT_START{ (GTK_WIDGET_FLAGS (wid) &= ~(flag)); }G_STMT_END
/* Macros for testing whether "wid" is of type GtkWidget.
*/
#define GTK_IS_WIDGET(wid) GTK_CHECK_TYPE ((wid), GTK_TYPE_WIDGET)
#define GTK_TYPE_WIDGET (gtk_widget_get_type ())
typedef struct _GtkRequisition GtkRequisition;
typedef struct _GtkAllocation GtkAllocation;
typedef struct _GtkSelectionData GtkSelectionData;
typedef struct _GtkWidget GtkWidget;
typedef struct _GtkWidgetClass GtkWidgetClass;
typedef struct _GtkWidgetAuxInfo GtkWidgetAuxInfo;
typedef struct _GtkWidgetShapeInfo GtkWidgetShapeInfo;
typedef void (*GtkCallback) (GtkWidget *widget,
gpointer data);
/* A requisition is a desired amount of space which a
* widget may request.
*/
struct _GtkRequisition
{
guint16 width;
guint16 height;
};
/* An allocation is a size and position. Where a widget
* can ask for a desired size, it is actually given
* this amount of space at the specified position.
*/
struct _GtkAllocation
{
gint16 x;
gint16 y;
guint16 width;
guint16 height;
};
/* The contents of a selection are returned in a GtkSelectionData
structure. selection/target identify the request.
type specifies the type of the return; if length < 0, and
the data should be ignored. This structure has object semantics -
no fields should be modified directly, they should not be created
directly, and pointers to them should not be stored beyond the duration of
a callback. (If the last is changed, we'll need to add reference
counting) */
struct _GtkSelectionData
{
GdkAtom selection;
GdkAtom target;
GdkAtom type;
gint format;
guchar *data;
gint length;
};
/* The widget is the base of the tree for displayable objects.
* (A displayable object is one which takes up some amount
* of screen real estate). It provides a common base and interface
* which actual widgets must adhere to.
*/
struct _GtkWidget
{
/* The object structure needs to be the first
* element in the widget structure in order for
* the object mechanism to work correctly. This
* allows a GtkWidget pointer to be cast to a
* GtkObject pointer.
*/
GtkObject object;
/* 16 bits of internally used private flags.
* this will be packed into the same 4 byte alignment frame that
* state and saved_state go. we therefore don't waste any new
* space on this.
*/
guint16 private_flags;
/* The state of the widget. There are actually only
* 5 widget states (defined in "gtkenums.h").
*/
guint8 state;
/* The saved state of the widget. When a widgets state
* is changed to GTK_STATE_INSENSITIVE via
* "gtk_widget_set_state" or "gtk_widget_set_sensitive"
* the old state is kept around in this field. The state
* will be restored once the widget gets sensitive again.
*/
guint8 saved_state;
/* The widgets name. If the widget does not have a name
* (the name is NULL), then its name (as returned by
* "gtk_widget_get_name") is its classes name.
* The widget name is used to determine the style to
* use for a widget.
*/
gchar *name;
/* The style for the widget. The style contains the
* colors the widget should be drawn in for each state
* along with graphics contexts used to draw with and
* the font to use for text.
*/
GtkStyle *style;
/* The widgets desired size.
*/
GtkRequisition requisition;
/* The widgets allocated size.
*/
GtkAllocation allocation;
/* The widgets window or its parent window if it does
* not have a window. (Which will be indicated by the
* GTK_NO_WINDOW flag being set).
*/
GdkWindow *window;
/* The widgets parent.
*/
GtkWidget *parent;
};
struct _GtkWidgetClass
{
/* The object class structure needs to be the first
* element in the widget class structure in order for
* the class mechanism to work correctly. This allows a
* GtkWidgetClass pointer to be cast to a GtkObjectClass
* pointer.
*/
GtkObjectClass parent_class;
/* The signal to emit when an object of this class is activated.
* This is used when activating the current focus widget and
* the default widget.
*/
gint activate_signal;
/* basics */
void (* show) (GtkWidget *widget);
void (* hide) (GtkWidget *widget);
void (* show_all) (GtkWidget *widget);
void (* hide_all) (GtkWidget *widget);
void (* map) (GtkWidget *widget);
void (* unmap) (GtkWidget *widget);
void (* realize) (GtkWidget *widget);
void (* unrealize) (GtkWidget *widget);
void (* draw) (GtkWidget *widget,
GdkRectangle *area);
void (* draw_focus) (GtkWidget *widget);
void (* draw_default) (GtkWidget *widget);
void (* size_request) (GtkWidget *widget,
GtkRequisition *requisition);
void (* size_allocate) (GtkWidget *widget,
GtkAllocation *allocation);
void (* state_changed) (GtkWidget *widget,
guint previous_state);
/* accelerators */
gint (* install_accelerator) (GtkWidget *widget,
const gchar *signal_name,
gchar key,
guint8 modifiers);
void (* remove_accelerator) (GtkWidget *widget,
const gchar *signal_name);
/* events */
gint (* event) (GtkWidget *widget,
GdkEvent *event);
gint (* button_press_event) (GtkWidget *widget,
GdkEventButton *event);
gint (* button_release_event) (GtkWidget *widget,
GdkEventButton *event);
gint (* motion_notify_event) (GtkWidget *widget,
GdkEventMotion *event);
gint (* delete_event) (GtkWidget *widget,
GdkEventAny *event);
gint (* destroy_event) (GtkWidget *widget,
GdkEventAny *event);
gint (* expose_event) (GtkWidget *widget,
GdkEventExpose *event);
gint (* key_press_event) (GtkWidget *widget,
GdkEventKey *event);
gint (* key_release_event) (GtkWidget *widget,
GdkEventKey *event);
gint (* enter_notify_event) (GtkWidget *widget,
GdkEventCrossing *event);
gint (* leave_notify_event) (GtkWidget *widget,
GdkEventCrossing *event);
gint (* configure_event) (GtkWidget *widget,
GdkEventConfigure *event);
gint (* focus_in_event) (GtkWidget *widget,
GdkEventFocus *event);
gint (* focus_out_event) (GtkWidget *widget,
GdkEventFocus *event);
gint (* map_event) (GtkWidget *widget,
GdkEventAny *event);
gint (* unmap_event) (GtkWidget *widget,
GdkEventAny *event);
gint (* property_notify_event) (GtkWidget *widget,
GdkEventProperty *event);
gint (* selection_clear_event) (GtkWidget *widget,
GdkEventSelection *event);
gint (* selection_request_event) (GtkWidget *widget,
GdkEventSelection *event);
gint (* selection_notify_event) (GtkWidget *widget,
GdkEventSelection *event);
gint (* proximity_in_event) (GtkWidget *widget,
GdkEventProximity *event);
gint (* proximity_out_event) (GtkWidget *widget,
GdkEventProximity *event);
gint (* drag_begin_event) (GtkWidget *widget,
GdkEventDragBegin *event);
gint (* drag_request_event) (GtkWidget *widget,
GdkEventDragRequest *event);
gint (* drop_enter_event) (GtkWidget *widget,
GdkEventDropEnter *event);
gint (* drop_leave_event) (GtkWidget *widget,
GdkEventDropLeave *event);
gint (* drop_data_available_event) (GtkWidget *widget,
GdkEventDropDataAvailable *event);
gint (* other_event) (GtkWidget *widget,
GdkEventOther *event);
/* selection */
void (* selection_received) (GtkWidget *widget,
GtkSelectionData *selection_data);
gint (* client_event) (GtkWidget *widget,
GdkEventClient *event);
gint (* no_expose_event) (GtkWidget *widget,
GdkEventAny *event);
};
struct _GtkWidgetAuxInfo
{
gint16 x;
gint16 y;
guint16 width;
guint16 height;
};
struct _GtkWidgetShapeInfo
{
gint16 offset_x;
gint16 offset_y;
GdkBitmap *shape_mask;
};
guint gtk_widget_get_type (void);
GtkWidget* gtk_widget_new (guint type,
...);
GtkWidget* gtk_widget_newv (guint type,
guint nargs,
GtkArg *args);
void gtk_widget_ref (GtkWidget *widget);
void gtk_widget_unref (GtkWidget *widget);
void gtk_widget_destroy (GtkWidget *widget);
void gtk_widget_destroyed (GtkWidget *widget,
GtkWidget **widget_pointer);
void gtk_widget_get (GtkWidget *widget,
GtkArg *arg);
void gtk_widget_getv (GtkWidget *widget,
guint nargs,
GtkArg *args);
void gtk_widget_set (GtkWidget *widget,
...);
void gtk_widget_setv (GtkWidget *widget,
guint nargs,
GtkArg *args);
void gtk_widget_unparent (GtkWidget *widget);
void gtk_widget_show (GtkWidget *widget);
void gtk_widget_hide (GtkWidget *widget);
void gtk_widget_show_all (GtkWidget *widget);
void gtk_widget_hide_all (GtkWidget *widget);
void gtk_widget_map (GtkWidget *widget);
void gtk_widget_unmap (GtkWidget *widget);
void gtk_widget_realize (GtkWidget *widget);
void gtk_widget_unrealize (GtkWidget *widget);
void gtk_widget_queue_draw (GtkWidget *widget);
void gtk_widget_queue_resize (GtkWidget *widget);
void gtk_widget_draw (GtkWidget *widget,
GdkRectangle *area);
void gtk_widget_draw_focus (GtkWidget *widget);
void gtk_widget_draw_default (GtkWidget *widget);
void gtk_widget_draw_children (GtkWidget *widget);
void gtk_widget_size_request (GtkWidget *widget,
GtkRequisition *requisition);
void gtk_widget_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
void gtk_widget_install_accelerator (GtkWidget *widget,
GtkAcceleratorTable *table,
const gchar *signal_name,
gchar key,
guint8 modifiers);
void gtk_widget_remove_accelerator (GtkWidget *widget,
GtkAcceleratorTable *table,
const gchar *signal_name);
gint gtk_widget_event (GtkWidget *widget,
GdkEvent *event);
void gtk_widget_activate (GtkWidget *widget);
void gtk_widget_reparent (GtkWidget *widget,
GtkWidget *new_parent);
void gtk_widget_popup (GtkWidget *widget,
gint x,
gint y);
gint gtk_widget_intersect (GtkWidget *widget,
GdkRectangle *area,
GdkRectangle *intersection);
gint gtk_widget_basic (GtkWidget *widget);
void gtk_widget_grab_focus (GtkWidget *widget);
void gtk_widget_grab_default (GtkWidget *widget);
void gtk_widget_set_name (GtkWidget *widget,
const gchar *name);
gchar* gtk_widget_get_name (GtkWidget *widget);
void gtk_widget_set_state (GtkWidget *widget,
GtkStateType state);
void gtk_widget_set_sensitive (GtkWidget *widget,
gint sensitive);
void gtk_widget_set_parent (GtkWidget *widget,
GtkWidget *parent);
void gtk_widget_set_parent_window (GtkWidget *widget,
GdkWindow *parent_window);
GdkWindow *gtk_widget_get_parent_window (GtkWidget *widget);
void gtk_widget_set_style (GtkWidget *widget,
GtkStyle *style);
void gtk_widget_set_uposition (GtkWidget *widget,
gint x,
gint y);
void gtk_widget_set_usize (GtkWidget *widget,
gint width,
gint height);
void gtk_widget_set_events (GtkWidget *widget,
gint events);
void gtk_widget_set_extension_events (GtkWidget *widget,
GdkExtensionMode mode);
GtkWidget* gtk_widget_get_toplevel (GtkWidget *widget);
GtkWidget* gtk_widget_get_ancestor (GtkWidget *widget,
gint type);
GdkColormap* gtk_widget_get_colormap (GtkWidget *widget);
GdkVisual* gtk_widget_get_visual (GtkWidget *widget);
GtkStyle* gtk_widget_get_style (GtkWidget *widget);
gint gtk_widget_get_events (GtkWidget *widget);
GdkExtensionMode gtk_widget_get_extension_events (GtkWidget *widget);
void gtk_widget_get_pointer (GtkWidget *widget,
gint *x,
gint *y);
gint gtk_widget_is_ancestor (GtkWidget *widget,
GtkWidget *ancestor);
gint gtk_widget_is_child (GtkWidget *widget,
GtkWidget *child);
void gtk_widget_push_colormap (GdkColormap *cmap);
void gtk_widget_push_visual (GdkVisual *visual);
void gtk_widget_push_style (GtkStyle *style);
void gtk_widget_pop_colormap (void);
void gtk_widget_pop_visual (void);
void gtk_widget_pop_style (void);
void gtk_widget_set_default_colormap (GdkColormap *colormap);
void gtk_widget_set_default_visual (GdkVisual *visual);
void gtk_widget_set_default_style (GtkStyle *style);
/* Tells other Gtk applications to use the same default style */
void gtk_widget_propagate_default_style(void);
GdkColormap* gtk_widget_get_default_colormap (void);
GdkVisual* gtk_widget_get_default_visual (void);
GtkStyle* gtk_widget_get_default_style (void);
/*
* see gdk_window_shape_combine_mask
*/
void gtk_widget_shape_combine_mask (GtkWidget *widget,
GdkBitmap *shape_mask,
gint offset_x,
gint offset_y);
/*
* When you get a drag_enter event, you can use this to tell Gtk of other
* items that are to be dragged as well...
*/
void gtk_widget_dnd_drag_add (GtkWidget *widget);
/*
* These two functions enable drag and/or drop on a widget,
* and also let Gtk know what data types will be accepted (use MIME type
* naming, plus tacking "URL:" on the front for link dragging)
*/
void gtk_widget_dnd_drag_set (GtkWidget *widget,
guint8 drag_enable,
gchar **type_accept_list,
guint numtypes);
void gtk_widget_dnd_drop_set (GtkWidget *widget,
guint8 drop_enable,
gchar **type_accept_list,
guint numtypes,
guint8 is_destructive_operation);
/*
* used to reply to a DRAG_REQUEST event - if you don't want to
* give the data then pass in NULL for it
*/
void gtk_widget_dnd_data_set (GtkWidget *widget,
GdkEvent *event,
gpointer data,
gulong data_numbytes);
#if defined (GTK_TRACE_OBJECTS) && defined (__GNUC__)
# define gtk_widget_ref gtk_object_ref
# define gtk_widget_unref gtk_object_unref
#endif /* GTK_TRACE_OBJECTS && __GNUC__ */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GTK_WIDGET_H__ */
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