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gimp/app/core/gimpbrushclipboard.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpbrushclipboard.c
* Copyright (C) 2006 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 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 <glib-object.h>
#include "core-types.h"
#include "base/temp-buf.h"
#include "base/pixel-region.h"
#include "paint-funcs/paint-funcs.h"
#include "gimp.h"
#include "gimpbuffer.h"
#include "gimpbrushclipboard.h"
#include "gimpimage.h"
#include "gimppickable.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_GIMP
};
/* local function prototypes */
static GObject * gimp_brush_clipboard_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_brush_clipboard_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_brush_clipboard_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
#if 0
static GimpData * gimp_brush_clipboard_duplicate (GimpData *data);
#endif
static void gimp_brush_clipboard_buffer_changed (Gimp *gimp,
GimpBrush *brush);
G_DEFINE_TYPE (GimpBrushClipboard, gimp_brush_clipboard, GIMP_TYPE_BRUSH)
#define parent_class gimp_brush_clipboard_parent_class
static void
gimp_brush_clipboard_class_init (GimpBrushClipboardClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
#if 0
GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
#endif
object_class->constructor = gimp_brush_clipboard_constructor;
object_class->set_property = gimp_brush_clipboard_set_property;
object_class->get_property = gimp_brush_clipboard_get_property;
#if 0
data_class->duplicate = gimp_brush_clipboard_duplicate;
#endif
g_object_class_install_property (object_class, PROP_GIMP,
g_param_spec_object ("gimp", NULL, NULL,
GIMP_TYPE_GIMP,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_brush_clipboard_init (GimpBrushClipboard *brush)
{
brush->gimp = NULL;
}
static GObject *
gimp_brush_clipboard_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpBrushClipboard *brush;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
brush = GIMP_BRUSH_CLIPBOARD (object);
g_assert (GIMP_IS_GIMP (brush->gimp));
g_signal_connect_object (brush->gimp, "buffer-changed",
G_CALLBACK (gimp_brush_clipboard_buffer_changed),
brush, 0);
gimp_brush_clipboard_buffer_changed (brush->gimp, GIMP_BRUSH (brush));
return object;
}
static void
gimp_brush_clipboard_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (object);
switch (property_id)
{
case PROP_GIMP:
brush->gimp = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_brush_clipboard_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (object);
switch (property_id)
{
case PROP_GIMP:
g_value_set_object (value, brush->gimp);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
#if 0
static GimpData *
gimp_brush_clipboard_duplicate (GimpData *data)
{
GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (data);
return gimp_brush_clipboard_new (brush->gimp);
}
#endif
GimpData *
gimp_brush_clipboard_new (Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
return g_object_new (GIMP_TYPE_BRUSH_CLIPBOARD,
"name", _("Clipboard"),
"gimp", gimp,
NULL);
}
/* private functions */
static void
gimp_brush_clipboard_buffer_changed (Gimp *gimp,
GimpBrush *brush)
{
gint width;
gint height;
if (brush->mask)
{
temp_buf_free (brush->mask);
brush->mask = NULL;
}
if (brush->pixmap)
{
temp_buf_free (brush->pixmap);
brush->pixmap = NULL;
}
if (gimp->global_buffer)
{
TileManager *tiles = gimp->global_buffer->tiles;
GimpImageType type = gimp_buffer_get_image_type (gimp->global_buffer);
width = MIN (gimp_buffer_get_width (gimp->global_buffer), 512);
height = MIN (gimp_buffer_get_height (gimp->global_buffer), 512);
brush->mask = temp_buf_new (width, height, 1, 0, 0, NULL);
brush->pixmap = temp_buf_new (width, height, 3, 0, 0, NULL);
/* copy the alpha channel into the brush's mask */
if (GIMP_IMAGE_TYPE_HAS_ALPHA (type))
{
PixelRegion bufferPR;
PixelRegion maskPR;
pixel_region_init (&bufferPR, tiles,
0, 0, width, height, FALSE);
pixel_region_init_temp_buf (&maskPR, brush->mask,
0, 0, width, height);
extract_alpha_region (&bufferPR, NULL, &maskPR);
}
else
{
temp_buf_data_clear (brush->mask);
}
/* copy the color channels into the brush's pixmap */
if (GIMP_IMAGE_TYPE_IS_RGB (type))
{
PixelRegion bufferPR;
PixelRegion pixmapPR;
pixel_region_init (&bufferPR, tiles,
0, 0, width, height, FALSE);
pixel_region_init_temp_buf (&pixmapPR, brush->pixmap,
0, 0, width, height);
if (GIMP_IMAGE_TYPE_HAS_ALPHA (type))
copy_color (&bufferPR, &pixmapPR);
else
copy_region (&bufferPR, &pixmapPR);
}
else
{
PixelRegion bufferPR;
PixelRegion tempPR;
TempBuf *temp = temp_buf_new (width, height, 1, 0, 0, NULL);
pixel_region_init (&bufferPR, tiles,
0, 0, width, height, FALSE);
pixel_region_init_temp_buf (&tempPR, temp,
0, 0, width, height);
if (GIMP_IMAGE_TYPE_HAS_ALPHA (type))
copy_component (&bufferPR, &tempPR, 0);
else
copy_region (&bufferPR, &tempPR);
temp_buf_copy (temp, brush->pixmap);
temp_buf_free (temp);
}
}
else
{
guchar color = 0;
width = 17;
height = 17;
brush->mask = temp_buf_new (width, height, 1, 0, 0, &color);
}
brush->x_axis.x = width / 2;
brush->x_axis.y = 0;
brush->y_axis.x = 0;
brush->y_axis.y = height / 2;
gimp_data_dirty (GIMP_DATA (brush));
}
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