gimp/app/core/gimpprojectable.c

279 lines
7.2 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpprojectable.c
* Copyright (C) 2008 Michael Natterer <mitch@gimp.org>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include "core-types.h"
#include "gimpmarshal.h"
#include "gimpprojectable.h"
#include "gimpviewable.h"
enum
{
INVALIDATE,
FLUSH,
STRUCTURE_CHANGED,
LAST_SIGNAL
};
/* local function prototypes */
static void gimp_projectable_iface_base_init (GimpProjectableInterface *iface);
static guint projectable_signals[LAST_SIGNAL] = { 0 };
GType
gimp_projectable_interface_get_type (void)
{
static GType projectable_iface_type = 0;
if (! projectable_iface_type)
{
const GTypeInfo projectable_iface_info =
{
sizeof (GimpProjectableInterface),
(GBaseInitFunc) gimp_projectable_iface_base_init,
(GBaseFinalizeFunc) NULL,
};
projectable_iface_type = g_type_register_static (G_TYPE_INTERFACE,
"GimpProjectableInterface",
&projectable_iface_info,
0);
g_type_interface_add_prerequisite (projectable_iface_type,
GIMP_TYPE_VIEWABLE);
}
return projectable_iface_type;
}
static void
gimp_projectable_iface_base_init (GimpProjectableInterface *iface)
{
static gboolean initialized = FALSE;
if (! initialized)
{
projectable_signals[INVALIDATE] =
g_signal_new ("invalidate",
G_TYPE_FROM_CLASS (iface),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpProjectableInterface, invalidate),
NULL, NULL,
gimp_marshal_VOID__INT_INT_INT_INT,
G_TYPE_NONE, 4,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT);
projectable_signals[FLUSH] =
g_signal_new ("flush",
G_TYPE_FROM_CLASS (iface),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpProjectableInterface, flush),
NULL, NULL,
gimp_marshal_VOID__BOOLEAN,
G_TYPE_NONE, 1,
G_TYPE_BOOLEAN);
projectable_signals[STRUCTURE_CHANGED] =
g_signal_new ("structure-changed",
G_TYPE_FROM_CLASS (iface),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpProjectableInterface, structure_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
initialized = TRUE;
}
}
/* public functions */
void
gimp_projectable_invalidate (GimpProjectable *projectable,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
g_signal_emit (projectable, projectable_signals[INVALIDATE], 0,
x, y, width, height);
}
void
gimp_projectable_flush (GimpProjectable *projectable,
gboolean preview_invalidated)
{
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
g_signal_emit (projectable, projectable_signals[FLUSH], 0,
preview_invalidated);
}
void
gimp_projectable_structure_changed (GimpProjectable *projectable)
{
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
g_signal_emit (projectable, projectable_signals[STRUCTURE_CHANGED], 0);
}
GimpImage *
gimp_projectable_get_image (GimpProjectable *projectable)
{
GimpProjectableInterface *iface;
g_return_val_if_fail (GIMP_IS_PROJECTABLE (projectable), NULL);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
if (iface->get_image)
return iface->get_image (projectable);
return NULL;
}
GimpImageType
gimp_projectable_get_image_type (GimpProjectable *projectable)
{
GimpProjectableInterface *iface;
g_return_val_if_fail (GIMP_IS_PROJECTABLE (projectable), 0);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
if (iface->get_image_type)
return iface->get_image_type (projectable);
return 0;
}
void
gimp_projectable_get_offset (GimpProjectable *projectable,
gint *x,
gint *y)
{
GimpProjectableInterface *iface;
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
g_return_if_fail (x != NULL);
g_return_if_fail (y != NULL);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
*x = 0;
*y = 0;
if (iface->get_offset)
iface->get_offset (projectable, x, y);
}
void
gimp_projectable_get_size (GimpProjectable *projectable,
gint *width,
gint *height)
{
GimpProjectableInterface *iface;
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
g_return_if_fail (width != NULL);
g_return_if_fail (height != NULL);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
*width = 0;
*height = 0;
if (iface->get_size)
iface->get_size (projectable, width, height);
}
GeglNode *
gimp_projectable_get_graph (GimpProjectable *projectable)
{
GimpProjectableInterface *iface;
g_return_val_if_fail (GIMP_IS_PROJECTABLE (projectable), NULL);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
if (iface->get_graph)
return iface->get_graph (projectable);
return NULL;
}
void
gimp_projectable_invalidate_preview (GimpProjectable *projectable)
{
GimpProjectableInterface *iface;
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
if (iface->invalidate_preview)
iface->invalidate_preview (projectable);
}
GList *
gimp_projectable_get_layers (GimpProjectable *projectable)
{
GimpProjectableInterface *iface;
g_return_val_if_fail (GIMP_IS_PROJECTABLE (projectable), NULL);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
if (iface->get_layers)
return iface->get_layers (projectable);
return NULL;
}
GList *
gimp_projectable_get_channels (GimpProjectable *projectable)
{
GimpProjectableInterface *iface;
g_return_val_if_fail (GIMP_IS_PROJECTABLE (projectable), NULL);
iface = GIMP_PROJECTABLE_GET_INTERFACE (projectable);
if (iface->get_channels)
return iface->get_channels (projectable);
return NULL;
}