mirror of https://github.com/GNOME/gimp.git
272 lines
8.5 KiB
C
272 lines
8.5 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "paint-types.h"
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#include "core/gimp.h"
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#include "core/gimpbrush.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpdynamics.h"
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#include "core/gimpgradient.h"
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#include "core/gimpimage.h"
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#include "core/gimpsymmetry.h"
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#include "gimpairbrush.h"
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#include "gimpairbrushoptions.h"
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#include "gimp-intl.h"
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#define STAMP_MAX_FPS 60
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enum
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{
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STAMP,
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LAST_SIGNAL
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};
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static void gimp_airbrush_finalize (GObject *object);
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static void gimp_airbrush_paint (GimpPaintCore *paint_core,
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GList *drawables,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym,
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GimpPaintState paint_state,
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guint32 time);
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static void gimp_airbrush_motion (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym);
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static gboolean gimp_airbrush_timeout (gpointer data);
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G_DEFINE_TYPE (GimpAirbrush, gimp_airbrush, GIMP_TYPE_PAINTBRUSH)
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#define parent_class gimp_airbrush_parent_class
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static guint airbrush_signals[LAST_SIGNAL] = { 0 };
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void
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gimp_airbrush_register (Gimp *gimp,
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GimpPaintRegisterCallback callback)
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{
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(* callback) (gimp,
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GIMP_TYPE_AIRBRUSH,
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GIMP_TYPE_AIRBRUSH_OPTIONS,
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"gimp-airbrush",
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_("Airbrush"),
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"gimp-tool-airbrush");
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}
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static void
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gimp_airbrush_class_init (GimpAirbrushClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
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object_class->finalize = gimp_airbrush_finalize;
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paint_core_class->paint = gimp_airbrush_paint;
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airbrush_signals[STAMP] =
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g_signal_new ("stamp",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GimpAirbrushClass, stamp),
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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}
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static void
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gimp_airbrush_init (GimpAirbrush *airbrush)
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{
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}
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static void
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gimp_airbrush_finalize (GObject *object)
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{
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GimpAirbrush *airbrush = GIMP_AIRBRUSH (object);
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if (airbrush->timeout_id)
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{
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g_source_remove (airbrush->timeout_id);
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airbrush->timeout_id = 0;
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}
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g_clear_object (&airbrush->sym);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gimp_airbrush_paint (GimpPaintCore *paint_core,
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GList *drawables,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym,
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GimpPaintState paint_state,
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guint32 time)
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{
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GimpAirbrush *airbrush = GIMP_AIRBRUSH (paint_core);
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GimpAirbrushOptions *options = GIMP_AIRBRUSH_OPTIONS (paint_options);
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GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
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GimpCoords coords;
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g_return_if_fail (g_list_length (drawables) == 1);
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if (airbrush->timeout_id)
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{
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g_source_remove (airbrush->timeout_id);
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airbrush->timeout_id = 0;
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}
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switch (paint_state)
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{
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case GIMP_PAINT_STATE_INIT:
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GIMP_PAINT_CORE_CLASS (parent_class)->paint (paint_core, drawables,
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paint_options,
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sym,
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paint_state, time);
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break;
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case GIMP_PAINT_STATE_MOTION:
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coords = *(gimp_symmetry_get_origin (sym));
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gimp_airbrush_motion (paint_core, drawables->data, paint_options, sym);
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if ((options->rate != 0.0) && ! options->motion_only)
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{
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawables->data));
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gdouble fade_point;
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gdouble dynamic_rate;
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gint timeout;
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fade_point = gimp_paint_options_get_fade (paint_options, image,
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paint_core->pixel_dist);
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airbrush->drawable = drawables->data;
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airbrush->paint_options = paint_options;
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gimp_symmetry_set_origin (sym, drawables->data, &coords);
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if (airbrush->sym)
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g_object_unref (airbrush->sym);
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airbrush->sym = g_object_ref (sym);
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/* Base our timeout on the original stroke. */
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airbrush->coords = coords;
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dynamic_rate = gimp_dynamics_get_linear_value (dynamics,
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GIMP_DYNAMICS_OUTPUT_RATE,
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&coords,
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paint_options,
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fade_point);
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timeout = (1000.0 / STAMP_MAX_FPS) /
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((options->rate / 100.0) * dynamic_rate);
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airbrush->timeout_id = g_timeout_add_full (G_PRIORITY_HIGH,
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timeout,
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gimp_airbrush_timeout,
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airbrush, NULL);
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}
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break;
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case GIMP_PAINT_STATE_FINISH:
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GIMP_PAINT_CORE_CLASS (parent_class)->paint (paint_core, drawables,
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paint_options,
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sym,
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paint_state, time);
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g_clear_object (&airbrush->sym);
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break;
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}
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}
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static void
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gimp_airbrush_motion (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym)
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{
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GimpAirbrushOptions *options = GIMP_AIRBRUSH_OPTIONS (paint_options);
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GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
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gdouble opacity;
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gdouble fade_point;
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GimpCoords *coords;
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fade_point = gimp_paint_options_get_fade (paint_options, image,
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paint_core->pixel_dist);
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coords = gimp_symmetry_get_origin (sym);
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opacity = (options->flow / 100.0 *
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gimp_dynamics_get_linear_value (dynamics,
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GIMP_DYNAMICS_OUTPUT_FLOW,
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coords,
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paint_options,
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fade_point));
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_gimp_paintbrush_motion (paint_core, drawable, paint_options,
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sym, opacity);
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}
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static gboolean
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gimp_airbrush_timeout (gpointer data)
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{
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GimpAirbrush *airbrush = GIMP_AIRBRUSH (data);
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airbrush->timeout_id = 0;
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g_signal_emit (airbrush, airbrush_signals[STAMP], 0);
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return G_SOURCE_REMOVE;
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}
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/* public functions */
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void
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gimp_airbrush_stamp (GimpAirbrush *airbrush)
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{
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GList *drawables;
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g_return_if_fail (GIMP_IS_AIRBRUSH (airbrush));
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gimp_symmetry_set_origin (airbrush->sym,
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airbrush->drawable, &airbrush->coords);
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drawables = g_list_prepend (NULL, airbrush->drawable),
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gimp_airbrush_paint (GIMP_PAINT_CORE (airbrush),
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drawables,
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airbrush->paint_options,
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airbrush->sym,
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GIMP_PAINT_STATE_MOTION, 0);
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g_list_free (drawables);
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gimp_symmetry_clear_origin (airbrush->sym);
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}
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