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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 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 <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "core-types.h"
#include "gimp.h"
#include "gimpbuffer.h"
#include "gimpbrush-private.h"
#include "gimpbrushclipboard.h"
#include "gimpimage.h"
#include "gimppickable.h"
#include "gimptempbuf.h"
#include "gimp-intl.h"
#define BRUSH_MAX_SIZE 1024
enum
{
PROP_0,
PROP_GIMP,
PROP_MASK_ONLY
};
/* local function prototypes */
static void gimp_brush_clipboard_constructed (GObject *object);
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_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->constructed = gimp_brush_clipboard_constructed;
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));
g_object_class_install_property (object_class, PROP_MASK_ONLY,
g_param_spec_boolean ("mask-only", NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_brush_clipboard_init (GimpBrushClipboard *brush)
{
}
static void
gimp_brush_clipboard_constructed (GObject *object)
{
GimpBrushClipboard *brush = GIMP_BRUSH_CLIPBOARD (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
g_assert (GIMP_IS_GIMP (brush->gimp));
g_signal_connect_object (brush->gimp, "clipboard-changed",
G_CALLBACK (gimp_brush_clipboard_changed),
brush, 0);
gimp_brush_clipboard_changed (brush->gimp, GIMP_BRUSH (brush));
}
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;
case PROP_MASK_ONLY:
brush->mask_only = g_value_get_boolean (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;
case PROP_MASK_ONLY:
g_value_set_boolean (value, brush->mask_only);
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,
gboolean mask_only)
{
const gchar *name;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
if (mask_only)
name = _("Clipboard Mask");
else
name = _("Clipboard Image");
return g_object_new (GIMP_TYPE_BRUSH_CLIPBOARD,
"name", name,
"gimp", gimp,
"mask-only", mask_only,
NULL);
}
/* private functions */
static void
gimp_brush_clipboard_changed (Gimp *gimp,
GimpBrush *brush)
{
GimpObject *paste;
GeglBuffer *buffer = NULL;
gint width;
gint height;
if (brush->priv->mask)
{
gimp_temp_buf_unref (brush->priv->mask);
brush->priv->mask = NULL;
}
if (brush->priv->pixmap)
{
gimp_temp_buf_unref (brush->priv->pixmap);
brush->priv->pixmap = NULL;
}
paste = gimp_get_clipboard_object (gimp);
if (GIMP_IS_IMAGE (paste))
{
gimp_pickable_flush (GIMP_PICKABLE (paste));
buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (paste));
}
else if (GIMP_IS_BUFFER (paste))
{
buffer = gimp_buffer_get_buffer (GIMP_BUFFER (paste));
}
if (buffer)
{
const Babl *format = gegl_buffer_get_format (buffer);
width = MIN (gegl_buffer_get_width (buffer), BRUSH_MAX_SIZE);
height = MIN (gegl_buffer_get_height (buffer), BRUSH_MAX_SIZE);
brush->priv->mask = gimp_temp_buf_new (width, height,
babl_format ("Y u8"));
if (GIMP_BRUSH_CLIPBOARD (brush)->mask_only)
{
guchar *p;
gint i;
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, 0, width, height), 1.0,
babl_format ("Y u8"),
gimp_temp_buf_get_data (brush->priv->mask),
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
/* invert the mask, it's more intuitive to think
* "black on white" than the other way around
*/
for (i = 0, p = gimp_temp_buf_get_data (brush->priv->mask);
i < width * height;
i++, p++)
{
*p = 255 - *p;
}
}
else
{
brush->priv->pixmap = gimp_temp_buf_new (width, height,
babl_format ("R'G'B' u8"));
/* copy the alpha channel into the brush's mask */
if (babl_format_has_alpha (format))
{
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, 0, width, height), 1.0,
babl_format ("A u8"),
gimp_temp_buf_get_data (brush->priv->mask),
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
else
{
memset (gimp_temp_buf_get_data (brush->priv->mask), 255,
width * height);
}
/* copy the color channels into the brush's pixmap */
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, 0, width, height), 1.0,
babl_format ("R'G'B' u8"),
gimp_temp_buf_get_data (brush->priv->pixmap),
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
}
else
{
width = 17;
height = 17;
brush->priv->mask = gimp_temp_buf_new (width, height,
babl_format ("Y u8"));
gimp_temp_buf_data_clear (brush->priv->mask);
}
brush->priv->x_axis.x = width / 2;
brush->priv->x_axis.y = 0;
brush->priv->y_axis.x = 0;
brush->priv->y_axis.y = height / 2;
gimp_data_dirty (GIMP_DATA (brush));
}
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