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/* 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 <glib-object.h>
#include "libgimpcolor/gimpcolor.h"
#include "paint-types.h"
#include "base/temp-buf.h"
#include "paint-funcs/paint-funcs.h"
#include "core/gimp.h"
#include "core/gimpbrush.h"
#include "core/gimpdrawable.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "gimpairbrush.h"
#include "gimpairbrushoptions.h"
#include "gimp-intl.h"
static void gimp_airbrush_class_init (GimpAirbrushClass *klass);
static void gimp_airbrush_init (GimpAirbrush *airbrush);
static void gimp_airbrush_finalize (GObject *object);
static void gimp_airbrush_paint (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpPaintState paint_state,
guint32 time);
static void gimp_airbrush_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options);
static gboolean gimp_airbrush_timeout (gpointer data);
static GimpPaintbrushClass *parent_class = NULL;
void
gimp_airbrush_register (Gimp *gimp,
GimpPaintRegisterCallback callback)
{
(* callback) (gimp,
GIMP_TYPE_AIRBRUSH,
GIMP_TYPE_AIRBRUSH_OPTIONS,
_("Airbrush"));
}
GType
gimp_airbrush_get_type (void)
{
static GType type = 0;
if (! type)
{
static const GTypeInfo info =
{
sizeof (GimpAirbrushClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_airbrush_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpAirbrush),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_airbrush_init,
};
type = g_type_register_static (GIMP_TYPE_PAINTBRUSH,
"GimpAirbrush",
&info, 0);
}
return type;
}
static void
gimp_airbrush_class_init (GimpAirbrushClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_airbrush_finalize;
paint_core_class->paint = gimp_airbrush_paint;
}
static void
gimp_airbrush_init (GimpAirbrush *airbrush)
{
airbrush->timeout_id = 0;
}
static void
gimp_airbrush_finalize (GObject *object)
{
GimpAirbrush *airbrush = GIMP_AIRBRUSH (object);
if (airbrush->timeout_id)
{
g_source_remove (airbrush->timeout_id);
airbrush->timeout_id = 0;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_airbrush_paint (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpPaintState paint_state,
guint32 time)
{
GimpAirbrush *airbrush = GIMP_AIRBRUSH (paint_core);
GimpAirbrushOptions *options = GIMP_AIRBRUSH_OPTIONS (paint_options);
switch (paint_state)
{
case GIMP_PAINT_STATE_INIT:
if (airbrush->timeout_id)
{
g_source_remove (airbrush->timeout_id);
airbrush->timeout_id = 0;
}
GIMP_PAINT_CORE_CLASS (parent_class)->paint (paint_core, drawable,
paint_options,
paint_state, time);
break;
case GIMP_PAINT_STATE_MOTION:
if (airbrush->timeout_id)
{
g_source_remove (airbrush->timeout_id);
airbrush->timeout_id = 0;
}
gimp_airbrush_motion (paint_core, drawable, paint_options);
if (options->rate != 0.0)
{
gdouble timeout;
airbrush->drawable = drawable;
airbrush->paint_options = paint_options;
timeout = (paint_options->pressure_options->rate ?
(10000 / (options->rate * PRESSURE_SCALE * paint_core->cur_coords.pressure)) :
(10000 / options->rate));
airbrush->timeout_id = g_timeout_add (timeout,
gimp_airbrush_timeout,
airbrush);
}
break;
case GIMP_PAINT_STATE_FINISH:
if (airbrush->timeout_id)
{
g_source_remove (airbrush->timeout_id);
airbrush->timeout_id = 0;
}
GIMP_PAINT_CORE_CLASS (parent_class)->paint (paint_core, drawable,
paint_options,
paint_state, time);
break;
}
}
static void
gimp_airbrush_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options)
{
GimpAirbrushOptions *options = GIMP_AIRBRUSH_OPTIONS (paint_options);
gdouble opacity;
gboolean saved_pressure;
opacity = options->pressure / 100.0;
saved_pressure = paint_options->pressure_options->hardness;
if (saved_pressure)
opacity *= PRESSURE_SCALE * paint_core->cur_coords.pressure;
paint_options->pressure_options->hardness = FALSE;
_gimp_paintbrush_motion (paint_core, drawable, paint_options, opacity);
paint_options->pressure_options->hardness = saved_pressure;
}
static gboolean
gimp_airbrush_timeout (gpointer data)
{
GimpAirbrush *airbrush = GIMP_AIRBRUSH (data);
gimp_airbrush_paint (GIMP_PAINT_CORE (airbrush),
airbrush->drawable,
airbrush->paint_options,
GIMP_PAINT_STATE_MOTION, 0);
gimp_image_flush (gimp_item_get_image (GIMP_ITEM (airbrush->drawable)));
return FALSE;
}
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