/*
* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation
* All rights reserved.
*
* This file is part of the Gnome Library.
*
* The Gnome 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.
*
* The Gnome 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 the Gnome Library; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
@NOTATION@
*/
/* Rectangle and ellipse item types for GnomeCanvas widget
*
* GnomeCanvas is basically a port of the Tk toolkit's most excellent canvas widget. Tk is
* copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
*
*
* Authors: Federico Mena <federico@nuclecu.unam.mx>
* Rusty Conover <rconover@bangtail.net>
*/
#include <config.h>
#include <math.h>
#include "gnome-canvas-rect.h"
#include "gnome-canvas-util.h"
#include "gnome-canvas-shape.h"
#include <libart_lgpl/art_vpath.h>
#include <libart_lgpl/art_svp.h>
#include <libart_lgpl/art_svp_vpath.h>
#include <libart_lgpl/art_rgb_svp.h>
/* Base class for rectangle and ellipse item types */
#define noVERBOSE
enum {
PROP_0,
PROP_X1,
PROP_Y1,
PROP_X2,
PROP_Y2
};
static void gnome_canvas_rect_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gnome_canvas_rect_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gnome_canvas_rect_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_path, gint flags);
G_DEFINE_TYPE(GnomeCanvasRect, gnome_canvas_rect, GNOME_TYPE_CANVAS_SHAPE)
static void
gnome_canvas_rect_class_init (GnomeCanvasRectClass *class)
{
GObjectClass *gobject_class;
GnomeCanvasItemClass *item_class;
gobject_class = (GObjectClass *) class;
gobject_class->set_property = gnome_canvas_rect_set_property;
gobject_class->get_property = gnome_canvas_rect_get_property;
g_object_class_install_property
(gobject_class,
PROP_X1,
g_param_spec_double ("x1", NULL, NULL,
-G_MAXDOUBLE, G_MAXDOUBLE, 0,
(G_PARAM_READABLE | G_PARAM_WRITABLE)));
g_object_class_install_property
(gobject_class,
PROP_Y1,
g_param_spec_double ("y1", NULL, NULL,
-G_MAXDOUBLE, G_MAXDOUBLE, 0,
(G_PARAM_READABLE | G_PARAM_WRITABLE)));
g_object_class_install_property
(gobject_class,
PROP_X2,
g_param_spec_double ("x2", NULL, NULL,
-G_MAXDOUBLE, G_MAXDOUBLE, 0,
(G_PARAM_READABLE | G_PARAM_WRITABLE)));
g_object_class_install_property
(gobject_class,
PROP_Y2,
g_param_spec_double ("y2", NULL, NULL,
-G_MAXDOUBLE, G_MAXDOUBLE, 0,
(G_PARAM_READABLE | G_PARAM_WRITABLE)));
item_class = (GnomeCanvasItemClass *) class;
item_class->update = gnome_canvas_rect_update;
}
static void
gnome_canvas_rect_init (GnomeCanvasRect *rect)
{
rect->x1 = 0.0;
rect->y1 = 0.0;
rect->x2 = 0.0;
rect->y2 = 0.0;
rect->path_dirty = 0;
}
static void
gnome_canvas_rect_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GnomeCanvasItem *item;
GnomeCanvasRect *rect;
g_return_if_fail (object != NULL);
g_return_if_fail (GNOME_IS_CANVAS_RECT (object));
item = GNOME_CANVAS_ITEM (object);
rect = GNOME_CANVAS_RECT (object);
switch (param_id) {
case PROP_X1:
rect->x1 = g_value_get_double (value);
rect->path_dirty = 1;
gnome_canvas_item_request_update (item);
break;
case PROP_Y1:
rect->y1 = g_value_get_double (value);
rect->path_dirty = 1;
gnome_canvas_item_request_update (item);
break;
case PROP_X2:
rect->x2 = g_value_get_double (value);
rect->path_dirty = 1;
gnome_canvas_item_request_update (item);
break;
case PROP_Y2:
rect->y2 = g_value_get_double (value);
rect->path_dirty = 1;
gnome_canvas_item_request_update (item);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gnome_canvas_rect_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GnomeCanvasRect *rect;
g_return_if_fail (object != NULL);
g_return_if_fail (GNOME_IS_CANVAS_RECT (object));
rect = GNOME_CANVAS_RECT (object);
switch (param_id) {
case PROP_X1:
g_value_set_double (value, rect->x1);
break;
case PROP_Y1:
g_value_set_double (value, rect->y1);
break;
case PROP_X2:
g_value_set_double (value, rect->x2);
break;
case PROP_Y2:
g_value_set_double (value, rect->y2);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gnome_canvas_rect_update (GnomeCanvasItem *item, gdouble affine[6], ArtSVP *clip_path, gint flags)
{
GnomeCanvasRect *rect;
GnomeCanvasPathDef *path_def;
rect = GNOME_CANVAS_RECT (item);
if (rect->path_dirty) {
path_def = gnome_canvas_path_def_new ();
gnome_canvas_path_def_moveto (path_def, rect->x1, rect->y1);
gnome_canvas_path_def_lineto (path_def, rect->x2, rect->y1);
gnome_canvas_path_def_lineto (path_def, rect->x2, rect->y2);
gnome_canvas_path_def_lineto (path_def, rect->x1, rect->y2);
gnome_canvas_path_def_lineto (path_def, rect->x1, rect->y1);
gnome_canvas_path_def_closepath_current (path_def);
gnome_canvas_shape_set_path_def (GNOME_CANVAS_SHAPE (item), path_def);
gnome_canvas_path_def_unref (path_def);
rect->path_dirty = 0;
}
if (GNOME_CANVAS_ITEM_CLASS (gnome_canvas_rect_parent_class)->update)
GNOME_CANVAS_ITEM_CLASS (gnome_canvas_rect_parent_class)->update (item, affine, clip_path, flags);
}
