gimp/app/widgets/gimpimageeditor.c

184 lines
5.2 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "widgets-types.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "gimpdocked.h"
#include "gimpimageeditor.h"
static void gimp_image_editor_class_init (GimpImageEditorClass *klass);
static void gimp_image_editor_init (GimpImageEditor *editor);
static void gimp_image_editor_docked_iface_init (GimpDockedInterface *docked_iface);
static void gimp_image_editor_set_docked_context (GimpDocked *docked,
GimpContext *context,
GimpContext *prev_context);
static void gimp_image_editor_destroy (GtkObject *object);
static void gimp_image_editor_real_set_image (GimpImageEditor *editor,
GimpImage *gimage);
static GimpEditorClass *parent_class = NULL;
GType
gimp_image_editor_get_type (void)
{
static GType type = 0;
if (! type)
{
static const GTypeInfo editor_info =
{
sizeof (GimpImageEditorClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_image_editor_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpImageEditor),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_image_editor_init,
};
static const GInterfaceInfo docked_iface_info =
{
(GInterfaceInitFunc) gimp_image_editor_docked_iface_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
type = g_type_register_static (GIMP_TYPE_EDITOR,
"GimpImageEditor",
&editor_info, 0);
g_type_add_interface_static (type, GIMP_TYPE_DOCKED,
&docked_iface_info);
}
return type;
}
static void
gimp_image_editor_class_init (GimpImageEditorClass *klass)
{
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->destroy = gimp_image_editor_destroy;
klass->set_image = gimp_image_editor_real_set_image;
}
static void
gimp_image_editor_init (GimpImageEditor *editor)
{
editor->gimage = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
static void
gimp_image_editor_docked_iface_init (GimpDockedInterface *docked_iface)
{
docked_iface->set_context = gimp_image_editor_set_docked_context;
}
static void
gimp_image_editor_docked_context_changed (GimpContext *context,
GimpImage *gimage,
GimpImageEditor *editor)
{
gimp_image_editor_set_image (editor, gimage);
}
static void
gimp_image_editor_set_docked_context (GimpDocked *docked,
GimpContext *context,
GimpContext *prev_context)
{
GimpImageEditor *editor = GIMP_IMAGE_EDITOR (docked);
GimpImage *gimage = NULL;
if (prev_context)
g_signal_handlers_disconnect_by_func (prev_context,
gimp_image_editor_docked_context_changed,
editor);
if (context)
{
g_signal_connect (context, "image_changed",
G_CALLBACK (gimp_image_editor_docked_context_changed),
editor);
gimage = gimp_context_get_image (context);
}
gimp_image_editor_set_image (editor, gimage);
}
static void
gimp_image_editor_destroy (GtkObject *object)
{
GimpImageEditor *editor;
editor = GIMP_IMAGE_EDITOR (object);
if (editor->gimage)
gimp_image_editor_set_image (editor, NULL);
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gimp_image_editor_real_set_image (GimpImageEditor *editor,
GimpImage *gimage)
{
editor->gimage = gimage;
gtk_widget_set_sensitive (GTK_WIDGET (editor), gimage != NULL);
}
/* public functions */
void
gimp_image_editor_set_image (GimpImageEditor *editor,
GimpImage *gimage)
{
g_return_if_fail (GIMP_IS_IMAGE_EDITOR (editor));
g_return_if_fail (! gimage || GIMP_IS_IMAGE (gimage));
if (gimage == editor->gimage)
return;
GIMP_IMAGE_EDITOR_GET_CLASS (editor)->set_image (editor, gimage);
}