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Viewing changes to libgnomecanvas/gnome-canvas-bpath.c

  • Committer: Bazaar Package Importer
  • Author(s): Sebastien Bacher
  • Date: 2004-09-13 22:40:39 UTC
  • Revision ID: james.westby@ubuntu.com-20040913224039-giftt9jhvyoorcuv
Tags: upstream-2.8.0
Import upstream version 2.8.0

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libgnomecanvas/gnome-canvas-bpath.c
 
1
/* Bpath item type for GnomeCanvas widget
 
2
 *
 
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 * GnomeCanvas is basically a port of the Tk toolkit's most excellent canvas widget.  Tk is
 
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 * copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
 
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 *
 
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 * Copyright (C) 1998,1999 The Free Software Foundation
 
7
 *
 
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 * Authors: Federico Mena <federico@nuclecu.unam.mx>
 
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 *          Raph Levien <raph@acm.org>
 
10
 *          Lauris Kaplinski <lauris@ximian.com>
 
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 *          Miguel de Icaza <miguel@kernel.org>
 
12
 *          Cody Russell <bratsche@gnome.org>
 
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 *          Rusty Conover <rconover@bangtail.net>
 
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 */
 
15
 
 
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/* These includes are set up for standalone compile. If/when this codebase
 
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   is integrated into libgnomeui, the includes will need to change. */
 
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#include <math.h>
 
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#include <string.h>
 
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#include <gtk/gtkobject.h>
 
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#include "gnome-canvas.h"
 
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#include "gnome-canvas-util.h"
 
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#include "gnome-canvas-bpath.h"
 
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#include "gnome-canvas-shape.h"
 
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#include "gnome-canvas-shape-private.h"
 
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#include "gnome-canvas-path-def.h"
 
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enum {
 
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        PROP_0,
 
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        PROP_BPATH
 
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};
 
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static void gnome_canvas_bpath_class_init   (GnomeCanvasBpathClass *class);
 
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static void gnome_canvas_bpath_init         (GnomeCanvasBpath      *bpath);
 
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static void gnome_canvas_bpath_destroy      (GtkObject               *object);
 
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static void gnome_canvas_bpath_set_property (GObject               *object,
 
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                                             guint                  param_id,
 
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                                             const GValue          *value,
 
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                                             GParamSpec            *pspec);
 
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static void gnome_canvas_bpath_get_property (GObject               *object,
 
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                                             guint                  param_id,
 
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                                             GValue                *value,
 
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                                             GParamSpec            *pspec);
 
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static void   gnome_canvas_bpath_update      (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags);
 
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static GnomeCanvasShapeClass *parent_class;
 
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GtkType
 
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gnome_canvas_bpath_get_type (void)
 
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{
 
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        static GType bpath_type;
 
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        if (!bpath_type) {
 
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                static const GTypeInfo object_info = {
 
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                        sizeof (GnomeCanvasBpathClass),
 
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                        (GBaseInitFunc) NULL,
 
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                        (GBaseFinalizeFunc) NULL,
 
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                        (GClassInitFunc) gnome_canvas_bpath_class_init,
 
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                        (GClassFinalizeFunc) NULL,
 
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                        NULL,                   /* class_data */
 
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                        sizeof (GnomeCanvasBpath),
 
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                        0,                      /* n_preallocs */
 
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                        (GInstanceInitFunc) gnome_canvas_bpath_init,
 
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                        NULL                    /* value_table */
 
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                };
 
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                bpath_type = g_type_register_static (GNOME_TYPE_CANVAS_SHAPE, "GnomeCanvasBpath",
 
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                                                     &object_info, 0);
 
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        }
 
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        return bpath_type;
 
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}
 
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static void
 
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gnome_canvas_bpath_class_init (GnomeCanvasBpathClass *class)
 
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{
 
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        GObjectClass         *gobject_class;
 
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        GtkObjectClass       *object_class;
 
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        GnomeCanvasItemClass *item_class;
 
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        gobject_class = (GObjectClass *) class;
 
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        object_class = (GtkObjectClass *) class;
 
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        item_class = (GnomeCanvasItemClass *) class;
 
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        parent_class = g_type_class_peek_parent (class);
 
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        /* when this gets checked into libgnomeui, change the
 
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           GTK_TYPE_POINTER to GTK_TYPE_GNOME_CANVAS_BPATH, and add an
 
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           entry to gnome-boxed.defs */
 
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        gobject_class->set_property = gnome_canvas_bpath_set_property;
 
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        gobject_class->get_property = gnome_canvas_bpath_get_property;
 
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        object_class->destroy = gnome_canvas_bpath_destroy;
 
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        g_object_class_install_property (gobject_class,
 
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                                         PROP_BPATH,
 
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                                         g_param_spec_pointer ("bpath", NULL, NULL,
 
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                                                               (G_PARAM_READABLE | G_PARAM_WRITABLE)));
 
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106
        item_class->update = gnome_canvas_bpath_update;
 
107
}
 
108
 
 
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static void
 
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gnome_canvas_bpath_init (GnomeCanvasBpath *bpath)
 
111
{
 
112
 
 
113
}
 
114
 
 
115
static void
 
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gnome_canvas_bpath_destroy (GtkObject *object)
 
117
{
 
118
        if (GTK_OBJECT_CLASS (parent_class)->destroy)
 
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                (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 
120
}
 
121
 
 
122
static void
 
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gnome_canvas_bpath_set_property (GObject      *object,
 
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                                 guint         param_id,
 
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                                 const GValue *value,
 
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                                 GParamSpec   *pspec)
 
127
{
 
128
        GnomeCanvasItem         *item;
 
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        GnomeCanvasBpath        *bpath;
 
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        GnomeCanvasPathDef      *gpp;
 
131
 
 
132
        item = GNOME_CANVAS_ITEM (object);
 
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        bpath = GNOME_CANVAS_BPATH (object);
 
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        switch (param_id) {
 
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        case PROP_BPATH:
 
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                gpp = g_value_get_pointer (value);
 
138
 
 
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                gnome_canvas_shape_set_path_def (GNOME_CANVAS_SHAPE (object), gpp);
 
140
 
 
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                gnome_canvas_item_request_update (item);
 
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                break;
 
143
 
 
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        default:
 
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                break;
 
146
        }
 
147
}
 
148
 
 
149
 
 
150
static void
 
151
gnome_canvas_bpath_get_property (GObject     *object,
 
152
                                 guint        param_id,
 
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                                 GValue      *value,
 
154
                                 GParamSpec  *pspec)
 
155
{
 
156
        GnomeCanvasShape        *shape;
 
157
 
 
158
        shape = GNOME_CANVAS_SHAPE(object);
 
159
 
 
160
        switch (param_id) {
 
161
        case PROP_BPATH:
 
162
                if (shape->priv->path) {
 
163
                        gnome_canvas_path_def_ref (shape->priv->path);
 
164
                        g_value_set_pointer (value, shape->priv->path);
 
165
                } else
 
166
                        g_value_set_pointer (value, NULL);
 
167
                break;
 
168
        default:
 
169
                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 
170
                break;
 
171
        }
 
172
}
 
173
 
 
174
static void
 
175
gnome_canvas_bpath_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
 
176
{
 
177
        if(GNOME_CANVAS_ITEM_CLASS(parent_class)->update) {
 
178
                (* GNOME_CANVAS_ITEM_CLASS(parent_class)->update)(item, affine, clip_path, flags);
 
179
        }
 
180
}