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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Chris Lahey <clahey@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifndef E_CANVAS_H
#define E_CANVAS_H
#include <gtk/gtk.h>
#include <libgnomecanvas/gnome-canvas.h>
/* ECanvas - A class derived from canvas for the purpose of adding
* evolution specific canvas hacks. */
/* Standard GObject macros */
#define E_TYPE_CANVAS \
(e_canvas_get_type ())
#define E_CANVAS(obj) \
(G_TYPE_CHECK_INSTANCE_CAST \
((obj), E_TYPE_CANVAS, ECanvas))
#define E_CANVAS_CLASS(cls) \
(G_TYPE_CHECK_CLASS_CAST \
((cls), E_TYPE_CANVAS, ECanvasClass))
#define E_IS_CANVAS(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE \
((obj), E_TYPE_CANVAS))
#define E_IS_CANVAS_CLASS(cls) \
(G_TYPE_CHECK_CLASS_TYPE \
((cls), E_TYPE_CANVAS))
#define E_CANVAS_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS \
((obj), E_TYPE_CANVAS, ECanvasClass))
G_BEGIN_DECLS
typedef void (*ECanvasItemReflowFunc) (GnomeCanvasItem *item,
gint flags);
typedef void (*ECanvasItemSelectionFunc) (GnomeCanvasItem *item,
gint flags,
gpointer user_data);
/* Returns the same as strcmp does. */
typedef gint (*ECanvasItemSelectionCompareFunc)
(GnomeCanvasItem *item,
gpointer data1,
gpointer data2,
gint flags);
typedef struct _ECanvas ECanvas;
typedef struct _ECanvasClass ECanvasClass;
/* Object flags for items */
enum {
E_CANVAS_ITEM_NEEDS_REFLOW = 1 << 13,
E_CANVAS_ITEM_DESCENDENT_NEEDS_REFLOW = 1 << 14
};
enum {
E_CANVAS_ITEM_SELECTION_SELECT = 1 << 0, /* TRUE = select. FALSE = unselect. */
E_CANVAS_ITEM_SELECTION_CURSOR = 1 << 1, /* TRUE = has become cursor. FALSE = not cursor. */
E_CANVAS_ITEM_SELECTION_DELETE_DATA = 1 << 2
};
typedef struct {
GnomeCanvasItem *item;
gpointer id;
} ECanvasSelectionInfo;
typedef void (*ECanvasItemGrabCancelled) (ECanvas *canvas,
GnomeCanvasItem *item,
gpointer data);
struct _ECanvas {
GnomeCanvas parent;
gint idle_id;
GList *selection;
ECanvasSelectionInfo *cursor;
GtkWidget *tooltip_window;
gint visibility_notify_id;
GtkWidget *toplevel;
/* Input context for dead key support */
GtkIMContext *im_context;
ECanvasItemGrabCancelled grab_cancelled_cb;
guint grab_cancelled_check_id;
guint32 grab_cancelled_time;
gpointer grab_cancelled_data;
};
struct _ECanvasClass {
GnomeCanvasClass parent_class;
void (*reflow) (ECanvas *canvas);
};
GType e_canvas_get_type (void);
GtkWidget * e_canvas_new (void);
/* Used to send all of the keystroke events to a specific item as well as
* GDK_FOCUS_CHANGE events. */
void e_canvas_item_grab_focus (GnomeCanvasItem *item,
gboolean widget_too);
void e_canvas_item_request_reflow (GnomeCanvasItem *item);
void e_canvas_item_request_parent_reflow
(GnomeCanvasItem *item);
void e_canvas_item_set_reflow_callback
(GnomeCanvasItem *item,
ECanvasItemReflowFunc func);
gint e_canvas_item_grab (ECanvas *canvas,
GnomeCanvasItem *item,
guint event_mask,
GdkCursor *cursor,
guint32 etime,
ECanvasItemGrabCancelled cancelled,
gpointer cancelled_data);
void e_canvas_item_ungrab (ECanvas *canvas,
GnomeCanvasItem *item,
guint32 etime);
G_END_DECLS
#endif /* E_CANVAS_H */
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