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gtk2/gtk/gtkwidget.h
Tim Janik 1a8765e6ce this is a stack of grabbing widgets now, having unique entries. the 
Mon Jan 19 09:16:38 1998  Tim Janik  <timj@psynet.net>

        * gtk/gtkmain.c (gtk_grab_add) (gtk_grab_remove): this is a stack
          of grabbing widgets now, having unique entries. the GTK_HAS_GRAB
          flag of a widget is set while it is on the stack (wasn't
          implemented before).
1998-01-19 08:23:24 +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 in the flags member of the GtkObject
* structure.
*/
enum
{
GTK_VISIBLE = 1 << 3,
GTK_MAPPED = 1 << 4,
GTK_UNMAPPED = 1 << 5,
GTK_REALIZED = 1 << 6,
GTK_SENSITIVE = 1 << 7,
GTK_PARENT_SENSITIVE = 1 << 8,
GTK_NO_WINDOW = 1 << 9,
GTK_HAS_FOCUS = 1 << 10,
GTK_CAN_FOCUS = 1 << 11,
GTK_HAS_DEFAULT = 1 << 12,
GTK_CAN_DEFAULT = 1 << 13,
GTK_PROPAGATE_STATE = 1 << 14,
GTK_ANCHORED = 1 << 15,
GTK_BASIC = 1 << 16,
GTK_USER_STYLE = 1 << 17,
GTK_HAS_GRAB = 1 << 18,
GTK_REDRAW_PENDING = 1 << 19,
GTK_RESIZE_PENDING = 1 << 20,
GTK_RESIZE_NEEDED = 1 << 21,
GTK_HAS_SHAPE_MASK = 1 << 22
};
/* Macro for casting a pointer to a GtkWidget pointer.
*/
#define GTK_WIDGET(obj) GTK_CHECK_CAST (obj, gtk_widget_get_type (), GtkWidget)
/* Macro for casting the "class" field of an object 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 structures.
*/
#define GTK_WIDGET_TYPE(obj) (GTK_OBJECT_TYPE (obj))
#define GTK_WIDGET_STATE(obj) (GTK_WIDGET (obj)->state)
#define GTK_WIDGET_SAVED_STATE(obj) (GTK_WIDGET (obj)->saved_state)
#define GTK_WIDGET_VISIBLE(obj) (GTK_OBJECT_FLAGS (obj) & GTK_VISIBLE)
#define GTK_WIDGET_MAPPED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_MAPPED)
#define GTK_WIDGET_UNMAPPED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_UNMAPPED)
#define GTK_WIDGET_REALIZED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_REALIZED)
#define GTK_WIDGET_SENSITIVE(obj) (GTK_OBJECT_FLAGS (obj) & GTK_SENSITIVE)
#define GTK_WIDGET_PARENT_SENSITIVE(obj) (GTK_OBJECT_FLAGS (obj) & GTK_PARENT_SENSITIVE)
#define GTK_WIDGET_IS_SENSITIVE(obj) ((GTK_WIDGET_SENSITIVE (obj) && \
GTK_WIDGET_PARENT_SENSITIVE (obj)) != 0)
#define GTK_WIDGET_NO_WINDOW(obj) (GTK_OBJECT_FLAGS (obj) & GTK_NO_WINDOW)
#define GTK_WIDGET_HAS_FOCUS(obj) (GTK_OBJECT_FLAGS (obj) & GTK_HAS_FOCUS)
#define GTK_WIDGET_CAN_FOCUS(obj) (GTK_OBJECT_FLAGS (obj) & GTK_CAN_FOCUS)
#define GTK_WIDGET_HAS_DEFAULT(obj) (GTK_OBJECT_FLAGS (obj) & GTK_HAS_DEFAULT)
#define GTK_WIDGET_CAN_DEFAULT(obj) (GTK_OBJECT_FLAGS (obj) & GTK_CAN_DEFAULT)
#define GTK_WIDGET_PROPAGATE_STATE(obj) (GTK_OBJECT_FLAGS (obj) & GTK_PROPAGATE_STATE)
#define GTK_WIDGET_DRAWABLE(obj) (GTK_WIDGET_VISIBLE (obj) && GTK_WIDGET_MAPPED (obj))
#define GTK_WIDGET_ANCHORED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_ANCHORED)
#define GTK_WIDGET_BASIC(obj) (GTK_OBJECT_FLAGS (obj) & GTK_BASIC)
#define GTK_WIDGET_USER_STYLE(obj) (GTK_OBJECT_FLAGS (obj) & GTK_USER_STYLE)
#define GTK_WIDGET_HAS_GRAB(obj) (GTK_OBJECT_FLAGS (obj) & GTK_HAS_GRAB)
#define GTK_WIDGET_REDRAW_PENDING(obj) (GTK_OBJECT_FLAGS (obj) & GTK_REDRAW_PENDING)
#define GTK_WIDGET_RESIZE_PENDING(obj) (GTK_OBJECT_FLAGS (obj) & GTK_RESIZE_PENDING)
#define GTK_WIDGET_RESIZE_NEEDED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_RESIZE_NEEDED)
#define GTK_WIDGET_HAS_SHAPE_MASK(obj) (GTK_OBJECT_FLAGS (obj) & GTK_HAS_SHAPE_MASK)
#define GTK_TYPE_WIDGET (gtk_widget_get_type ())
/* Macro for testing whether "obj" is of type GtkWidget.
*/
#define GTK_IS_WIDGET(obj) GTK_CHECK_TYPE (obj, GTK_TYPE_WIDGET)
/* Macros for setting and clearing widget flags. Notice
* that these are only wrappers for the macros which
* set and clear the flags in the GtkObject structure.
*/
#define GTK_WIDGET_SET_FLAGS(obj,flag) (GTK_OBJECT_SET_FLAGS (obj, flag))
#define GTK_WIDGET_UNSET_FLAGS(obj,flag) (GTK_OBJECT_UNSET_FLAGS (obj, flag))
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;
/* 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 via "gtk_widget_set_state" the old state
* is kept around in this field. The state may be
* restored using "gtk_widget_restore_state".
*/
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);
/* 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);
gint (* visibility_notify_event) (GtkWidget *widget,
GdkEventVisibility *event);
/* selection */
void (* selection_received) (GtkWidget *widget,
GtkSelectionData *selection_data);
gint (* client_event) (GtkWidget *widget,
GdkEventClient *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_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_destroy (GtkWidget *widget);
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_restore_state (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);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GTK_WIDGET_H__ */
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