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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* e-canvas.h
* Copyright (C) 2000 Helix Code, Inc.
* Author: Chris Lahey <clahey@helixcode.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __E_CANVAS_H__
#define __E_CANVAS_H__
#include <gnome.h>
#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus */
/* ECanvas - A class derived from canvas for the purpose of adding
* evolution specific canvas hacks.
*/
#define E_CANVAS_TYPE (e_canvas_get_type ())
#define E_CANVAS(obj) (GTK_CHECK_CAST ((obj), E_CANVAS_TYPE, ECanvas))
#define E_CANVAS_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), E_CANVAS_TYPE, ECanvasClass))
#define E_IS_CANVAS(obj) (GTK_CHECK_TYPE ((obj), E_CANVAS_TYPE))
#define E_IS_CANVAS_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((obj), E_CANVAS_TYPE))
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;
struct _ECanvas
{
GnomeCanvas parent;
int idle_id;
GList *selection;
ECanvasSelectionInfo *cursor;
/* Input context for dead key support */
GdkIC *ic;
GdkICAttr *ic_attr;
};
struct _ECanvasClass
{
GnomeCanvasClass parent_class;
void (* reflow) (ECanvas *canvas);
};
GtkType 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);
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);
void e_canvas_item_set_selection_callback (GnomeCanvasItem *item, ECanvasItemSelectionFunc func);
void e_canvas_item_set_selection_compare_callback (GnomeCanvasItem *item, ECanvasItemSelectionCompareFunc func);
void e_canvas_item_set_cursor (GnomeCanvasItem *item, gpointer id);
void e_canvas_item_add_selection (GnomeCanvasItem *item, gpointer id);
void e_canvas_item_remove_selection (GnomeCanvasItem *item, gpointer id);
/* Not implemented yet. */
void e_canvas_item_set_cursor_end (GnomeCanvasItem *item, gpointer id);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __E_CANVAS_H__ */
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