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/* -*- mode: c; style: linux -*- */
/* rollback-widget.c
* Copyright (C) 2000 Helix Code, Inc.
*
* Written by Bradford Hovinen <hovinen@helixcode.com>
*
* This program 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, 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "rollback-widget.h"
enum {
ARG_0,
ARG_SAMPLE
};
struct _RollbackWidgetPrivate
{
GdkGC *main_gc;
};
static GnomeCanvasClass *parent_class;
static void rollback_widget_init (RollbackWidget *rollback_widget);
static void rollback_widget_class_init (RollbackWidgetClass *class);
static void rollback_widget_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void rollback_widget_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void rollback_widget_finalize (GtkObject *object);
static void rollback_widget_realize (GtkWidget *widget);
static void rollback_widget_unrealize (GtkWidget *widget);
GType
rollback_widget_get_type (void)
{
static GType rollback_widget_type = 0;
if (!rollback_widget_type) {
GtkTypeInfo rollback_widget_info = {
"RollbackWidget",
sizeof (RollbackWidget),
sizeof (RollbackWidgetClass),
(GtkClassInitFunc) rollback_widget_class_init,
(GtkObjectInitFunc) rollback_widget_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL
};
rollback_widget_type =
gtk_type_unique (gnome_canvas_get_type (),
&rollback_widget_info);
}
return rollback_widget_type;
}
static void
rollback_widget_init (RollbackWidget *rollback_widget)
{
rollback_widget->p = g_new0 (RollbackWidgetPrivate, 1);
gtk_widget_set_usize (GTK_WIDGET (rollback_widget), 200, 30);
rollback_widget->control_colors[BACKGROUND_COLOR].red = 112 * 256;
rollback_widget->control_colors[BACKGROUND_COLOR].green = 128 * 256;
rollback_widget->control_colors[BACKGROUND_COLOR].blue = 144 * 256;
rollback_widget->control_colors[MARKER_COLOR].red = 0;
rollback_widget->control_colors[MARKER_COLOR].green = 0;
rollback_widget->control_colors[MARKER_COLOR].blue = 0;
}
static void
rollback_widget_class_init (RollbackWidgetClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
gtk_object_add_arg_type ("RollbackWidget::sample",
GTK_TYPE_POINTER,
GTK_ARG_READWRITE,
ARG_SAMPLE);
object_class = GTK_OBJECT_CLASS (class);
object_class->finalize = rollback_widget_finalize;
object_class->set_arg = rollback_widget_set_arg;
object_class->get_arg = rollback_widget_get_arg;
widget_class = GTK_WIDGET_CLASS (class);
widget_class->realize = rollback_widget_realize;
widget_class->unrealize = rollback_widget_unrealize;
parent_class = GNOME_CANVAS_CLASS
(gtk_type_class (gnome_canvas_get_type ()));
}
static void
rollback_widget_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
RollbackWidget *rollback_widget;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_ROLLBACK_WIDGET (object));
rollback_widget = ROLLBACK_WIDGET (object);
switch (arg_id) {
case ARG_SAMPLE:
break;
default:
g_warning ("Bad argument set");
break;
}
}
static void
rollback_widget_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
RollbackWidget *rollback_widget;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_ROLLBACK_WIDGET (object));
rollback_widget = ROLLBACK_WIDGET (object);
switch (arg_id) {
case ARG_SAMPLE:
break;
default:
g_warning ("Bad argument get");
break;
}
}
static void
rollback_widget_finalize (GtkObject *object)
{
RollbackWidget *rollback_widget;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_ROLLBACK_WIDGET (object));
rollback_widget = ROLLBACK_WIDGET (object);
g_free (rollback_widget->p);
GTK_OBJECT_CLASS (parent_class)->finalize (object);
}
GtkObject *
rollback_widget_new (void)
{
return gtk_object_new (rollback_widget_get_type (),
NULL);
}
GdkGC *
rollback_widget_get_gc (RollbackWidget *widget)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (IS_ROLLBACK_WIDGET (widget), NULL);
gdk_gc_ref (widget->p->main_gc);
return widget->p->main_gc;
}
static void
rollback_widget_realize (GtkWidget *widget)
{
RollbackWidget *rollback_widget;
GdkColormap *colormap;
gboolean success[LAST_COLOR];
gint i;
rollback_widget = ROLLBACK_WIDGET (widget);
if (!GTK_WIDGET_REALIZED (widget)) {
GTK_WIDGET_CLASS (parent_class)->realize (widget);
rollback_widget->p->main_gc = gdk_gc_new (widget->window);
colormap = gtk_widget_get_colormap (widget);
gdk_colormap_alloc_colors (colormap,
rollback_widget->control_colors,
LAST_COLOR, FALSE, TRUE,
success);
for (i = 0; success[i] && i < LAST_COLOR; i++);
if (i < LAST_COLOR)
g_warning ("Could not allocate colors for rollback "
"control\n");
}
}
static void
rollback_widget_unrealize (GtkWidget *widget)
{
if (ROLLBACK_WIDGET (widget)->p->main_gc != NULL) {
gdk_gc_unref (ROLLBACK_WIDGET (widget)->p->main_gc);
ROLLBACK_WIDGET (widget)->p->main_gc = NULL;
}
GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
}
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