mirror of https://github.com/GNOME/gimp.git
624 lines
24 KiB
C
624 lines
24 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 <http://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 "libgimpbase/gimpbase.h"
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#include "libgimpmath/gimpmath.h"
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#include "paint-types.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "core/gimp.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpdynamics.h"
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#include "core/gimperror.h"
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#include "core/gimpimage.h"
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#include "core/gimppickable.h"
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#include "core/gimpsymmetry.h"
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#include "gimpsourcecore.h"
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#include "gimpsourceoptions.h"
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#include "gimp-intl.h"
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enum
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{
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PROP_0,
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PROP_SRC_DRAWABLE,
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PROP_SRC_X,
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PROP_SRC_Y
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};
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static void gimp_source_core_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gimp_source_core_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static gboolean gimp_source_core_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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GError **error);
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static void gimp_source_core_paint (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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GimpPaintState paint_state,
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guint32 time);
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#if 0
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static void gimp_source_core_motion (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym);
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#endif
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static gboolean gimp_source_core_real_use_source (GimpSourceCore *source_core,
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GimpSourceOptions *options);
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static GeglBuffer *
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gimp_source_core_real_get_source (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPickable *src_pickable,
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gint src_offset_x,
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gint src_offset_y,
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GeglBuffer *paint_buffer,
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gint paint_buffer_x,
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gint paint_buffer_y,
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gint *paint_area_offset_x,
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gint *paint_area_offset_y,
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gint *paint_area_width,
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gint *paint_area_height,
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GeglRectangle *src_rect);
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static void gimp_source_core_set_src_drawable (GimpSourceCore *source_core,
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GimpDrawable *drawable);
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G_DEFINE_TYPE (GimpSourceCore, gimp_source_core, GIMP_TYPE_BRUSH_CORE)
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#define parent_class gimp_source_core_parent_class
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static void
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gimp_source_core_class_init (GimpSourceCoreClass *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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GimpBrushCoreClass *brush_core_class = GIMP_BRUSH_CORE_CLASS (klass);
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object_class->set_property = gimp_source_core_set_property;
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object_class->get_property = gimp_source_core_get_property;
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paint_core_class->start = gimp_source_core_start;
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paint_core_class->paint = gimp_source_core_paint;
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brush_core_class->handles_changing_brush = TRUE;
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klass->use_source = gimp_source_core_real_use_source;
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klass->get_source = gimp_source_core_real_get_source;
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klass->motion = NULL;
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g_object_class_install_property (object_class, PROP_SRC_DRAWABLE,
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g_param_spec_object ("src-drawable",
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NULL, NULL,
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GIMP_TYPE_DRAWABLE,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_SRC_X,
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g_param_spec_int ("src-x", NULL, NULL,
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0, GIMP_MAX_IMAGE_SIZE,
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0,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_SRC_Y,
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g_param_spec_int ("src-y", NULL, NULL,
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0, GIMP_MAX_IMAGE_SIZE,
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0,
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GIMP_PARAM_READWRITE));
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}
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static void
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gimp_source_core_init (GimpSourceCore *source_core)
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{
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source_core->set_source = FALSE;
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source_core->src_drawable = NULL;
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source_core->src_x = 0;
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source_core->src_y = 0;
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source_core->orig_src_x = 0;
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source_core->orig_src_y = 0;
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source_core->offset_x = 0;
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source_core->offset_y = 0;
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source_core->first_stroke = TRUE;
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}
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static void
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gimp_source_core_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (object);
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switch (property_id)
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{
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case PROP_SRC_DRAWABLE:
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gimp_source_core_set_src_drawable (source_core,
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g_value_get_object (value));
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break;
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case PROP_SRC_X:
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source_core->src_x = g_value_get_int (value);
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break;
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case PROP_SRC_Y:
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source_core->src_y = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_source_core_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (object);
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switch (property_id)
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{
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case PROP_SRC_DRAWABLE:
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g_value_set_object (value, source_core->src_drawable);
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break;
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case PROP_SRC_X:
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g_value_set_int (value, source_core->src_x);
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break;
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case PROP_SRC_Y:
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g_value_set_int (value, source_core->src_y);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static gboolean
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gimp_source_core_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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GError **error)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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if (! GIMP_PAINT_CORE_CLASS (parent_class)->start (paint_core, drawable,
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paint_options, coords,
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error))
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{
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return FALSE;
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}
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paint_core->use_saved_proj = FALSE;
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if (! source_core->set_source &&
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gimp_source_core_use_source (source_core, options))
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{
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if (! source_core->src_drawable)
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{
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g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
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_("Set a source image first."));
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return FALSE;
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}
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if (options->sample_merged &&
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gimp_item_get_image (GIMP_ITEM (source_core->src_drawable)) ==
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gimp_item_get_image (GIMP_ITEM (drawable)))
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{
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paint_core->use_saved_proj = TRUE;
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}
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}
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return TRUE;
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}
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static void
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gimp_source_core_paint (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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GimpPaintState paint_state,
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guint32 time)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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const GimpCoords *coords;
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/* The source is based on the original stroke */
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coords = gimp_symmetry_get_origin (sym);
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switch (paint_state)
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{
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case GIMP_PAINT_STATE_INIT:
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if (source_core->set_source)
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{
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gimp_source_core_set_src_drawable (source_core, drawable);
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/* FIXME(?): subpixel source sampling */
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source_core->src_x = floor (coords->x);
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source_core->src_y = floor (coords->y);
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source_core->first_stroke = TRUE;
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}
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else if (options->align_mode == GIMP_SOURCE_ALIGN_NO)
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{
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source_core->orig_src_x = source_core->src_x;
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source_core->orig_src_y = source_core->src_y;
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source_core->first_stroke = TRUE;
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}
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break;
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case GIMP_PAINT_STATE_MOTION:
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if (source_core->set_source)
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{
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/* If the control key is down, move the src target and return */
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source_core->src_x = floor (coords->x);
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source_core->src_y = floor (coords->y);
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source_core->first_stroke = TRUE;
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}
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else
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{
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/* otherwise, update the target */
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gint dest_x;
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gint dest_y;
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dest_x = floor (coords->x);
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dest_y = floor (coords->y);
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if (options->align_mode == GIMP_SOURCE_ALIGN_REGISTERED)
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{
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source_core->offset_x = 0;
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source_core->offset_y = 0;
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}
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else if (options->align_mode == GIMP_SOURCE_ALIGN_FIXED)
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{
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source_core->offset_x = source_core->src_x - dest_x;
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source_core->offset_y = source_core->src_y - dest_y;
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}
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else if (source_core->first_stroke)
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{
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source_core->offset_x = source_core->src_x - dest_x;
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source_core->offset_y = source_core->src_y - dest_y;
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source_core->first_stroke = FALSE;
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}
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source_core->src_x = dest_x + source_core->offset_x;
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source_core->src_y = dest_y + source_core->offset_y;
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gimp_source_core_motion (source_core, drawable, paint_options,
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sym);
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}
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break;
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case GIMP_PAINT_STATE_FINISH:
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if (options->align_mode == GIMP_SOURCE_ALIGN_NO &&
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! source_core->first_stroke)
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{
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source_core->src_x = source_core->orig_src_x;
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source_core->src_y = source_core->orig_src_y;
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}
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break;
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default:
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break;
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}
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g_object_notify (G_OBJECT (source_core), "src-x");
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g_object_notify (G_OBJECT (source_core), "src-y");
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}
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void
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gimp_source_core_motion (GimpSourceCore *source_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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GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
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GimpSourceOptions *options = GIMP_SOURCE_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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GimpPickable *src_pickable = NULL;
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GeglBuffer *src_buffer = NULL;
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GeglRectangle src_rect;
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gint base_src_offset_x;
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gint base_src_offset_y;
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gint src_offset_x;
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gint src_offset_y;
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GeglBuffer *paint_buffer;
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gint paint_buffer_x;
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gint paint_buffer_y;
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gint paint_area_offset_x;
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gint paint_area_offset_y;
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gint paint_area_width;
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gint paint_area_height;
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gdouble fade_point;
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gdouble opacity;
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GimpLayerMode paint_mode;
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GeglNode *op;
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GimpCoords *origin;
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GimpCoords *coords;
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gint n_strokes;
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gint i;
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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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origin = gimp_symmetry_get_origin (sym);
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/* Some settings are based on the original stroke. */
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opacity = gimp_dynamics_get_linear_value (dynamics,
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GIMP_DYNAMICS_OUTPUT_OPACITY,
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origin,
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paint_options,
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fade_point);
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if (opacity == 0.0)
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return;
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base_src_offset_x = source_core->offset_x;
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base_src_offset_y = source_core->offset_y;
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if (gimp_source_core_use_source (source_core, options))
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{
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src_pickable = GIMP_PICKABLE (source_core->src_drawable);
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if (options->sample_merged)
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{
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GimpImage *src_image = gimp_pickable_get_image (src_pickable);
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gint off_x, off_y;
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src_pickable = GIMP_PICKABLE (src_image);
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gimp_item_get_offset (GIMP_ITEM (source_core->src_drawable),
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&off_x, &off_y);
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base_src_offset_x += off_x;
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base_src_offset_y += off_y;
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}
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}
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gimp_brush_core_eval_transform_dynamics (GIMP_BRUSH_CORE (paint_core),
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drawable,
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paint_options,
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origin);
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paint_mode = gimp_context_get_paint_mode (GIMP_CONTEXT (paint_options));
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n_strokes = gimp_symmetry_get_size (sym);
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for (i = 0; i < n_strokes; i++)
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{
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coords = gimp_symmetry_get_coords (sym, i);
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paint_buffer = gimp_paint_core_get_paint_buffer (paint_core, drawable,
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paint_options,
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paint_mode,
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coords,
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&paint_buffer_x,
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&paint_buffer_y,
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NULL, NULL);
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if (! paint_buffer)
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continue;
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paint_area_offset_x = 0;
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paint_area_offset_y = 0;
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paint_area_width = gegl_buffer_get_width (paint_buffer);
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paint_area_height = gegl_buffer_get_height (paint_buffer);
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src_offset_x = base_src_offset_x;
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src_offset_y = base_src_offset_y;
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if (gimp_source_core_use_source (source_core, options))
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{
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/* When using a source, use the same for every stroke. */
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src_offset_x += floor (origin->x) - floor (coords->x);
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src_offset_y += floor (origin->y) - floor (coords->y);
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src_buffer =
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GIMP_SOURCE_CORE_GET_CLASS (source_core)->get_source (source_core,
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drawable,
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paint_options,
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src_pickable,
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src_offset_x,
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src_offset_y,
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paint_buffer,
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paint_buffer_x,
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paint_buffer_y,
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&paint_area_offset_x,
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&paint_area_offset_y,
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&paint_area_width,
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&paint_area_height,
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&src_rect);
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if (! src_buffer)
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continue;
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}
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/* Set the paint buffer to transparent */
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gegl_buffer_clear (paint_buffer, NULL);
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op = gimp_symmetry_get_operation (sym, i,
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gegl_buffer_get_width (paint_buffer),
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gegl_buffer_get_height (paint_buffer));
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GIMP_SOURCE_CORE_GET_CLASS (source_core)->motion (source_core,
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drawable,
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paint_options,
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coords,
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op,
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opacity,
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src_pickable,
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src_buffer,
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&src_rect,
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src_offset_x,
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src_offset_y,
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paint_buffer,
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paint_buffer_x,
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paint_buffer_y,
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paint_area_offset_x,
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paint_area_offset_y,
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paint_area_width,
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paint_area_height);
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if (src_buffer)
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g_object_unref (src_buffer);
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}
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}
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gboolean
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gimp_source_core_use_source (GimpSourceCore *source_core,
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GimpSourceOptions *options)
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{
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return GIMP_SOURCE_CORE_GET_CLASS (source_core)->use_source (source_core,
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options);
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}
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static gboolean
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gimp_source_core_real_use_source (GimpSourceCore *source_core,
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GimpSourceOptions *options)
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|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static GeglBuffer *
|
|
gimp_source_core_real_get_source (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
GimpPickable *src_pickable,
|
|
gint src_offset_x,
|
|
gint src_offset_y,
|
|
GeglBuffer *paint_buffer,
|
|
gint paint_buffer_x,
|
|
gint paint_buffer_y,
|
|
gint *paint_area_offset_x,
|
|
gint *paint_area_offset_y,
|
|
gint *paint_area_width,
|
|
gint *paint_area_height,
|
|
GeglRectangle *src_rect)
|
|
{
|
|
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
|
|
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
|
|
GimpImage *src_image = gimp_pickable_get_image (src_pickable);
|
|
GeglBuffer *src_buffer = gimp_pickable_get_buffer (src_pickable);
|
|
GeglBuffer *dest_buffer;
|
|
gint x, y;
|
|
gint width, height;
|
|
|
|
if (! gimp_rectangle_intersect (paint_buffer_x + src_offset_x,
|
|
paint_buffer_y + src_offset_y,
|
|
gegl_buffer_get_width (paint_buffer),
|
|
gegl_buffer_get_height (paint_buffer),
|
|
0, 0,
|
|
gegl_buffer_get_width (src_buffer),
|
|
gegl_buffer_get_height (src_buffer),
|
|
&x, &y,
|
|
&width, &height))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* If the source image is different from the destination,
|
|
* then we should copy straight from the source image
|
|
* to the canvas.
|
|
* Otherwise, we need a call to get_orig_image to make sure
|
|
* we get a copy of the unblemished (offset) image
|
|
*/
|
|
if (( options->sample_merged && (src_image != image)) ||
|
|
(! options->sample_merged && (source_core->src_drawable != drawable)))
|
|
{
|
|
dest_buffer = src_buffer;
|
|
}
|
|
else
|
|
{
|
|
/* get the original image */
|
|
if (options->sample_merged)
|
|
dest_buffer = gimp_paint_core_get_orig_proj (GIMP_PAINT_CORE (source_core));
|
|
else
|
|
dest_buffer = gimp_paint_core_get_orig_image (GIMP_PAINT_CORE (source_core));
|
|
}
|
|
|
|
*paint_area_offset_x = x - (paint_buffer_x + src_offset_x);
|
|
*paint_area_offset_y = y - (paint_buffer_y + src_offset_y);
|
|
*paint_area_width = width;
|
|
*paint_area_height = height;
|
|
|
|
*src_rect = *GEGL_RECTANGLE (x, y, width, height);
|
|
|
|
return g_object_ref (dest_buffer);
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_src_drawable_removed (GimpDrawable *drawable,
|
|
GimpSourceCore *source_core)
|
|
{
|
|
if (drawable == source_core->src_drawable)
|
|
{
|
|
source_core->src_drawable = NULL;
|
|
}
|
|
|
|
g_signal_handlers_disconnect_by_func (drawable,
|
|
gimp_source_core_src_drawable_removed,
|
|
source_core);
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_set_src_drawable (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable)
|
|
{
|
|
if (source_core->src_drawable == drawable)
|
|
return;
|
|
|
|
if (source_core->src_drawable)
|
|
g_signal_handlers_disconnect_by_func (source_core->src_drawable,
|
|
gimp_source_core_src_drawable_removed,
|
|
source_core);
|
|
|
|
source_core->src_drawable = drawable;
|
|
|
|
if (source_core->src_drawable)
|
|
g_signal_connect (source_core->src_drawable, "removed",
|
|
G_CALLBACK (gimp_source_core_src_drawable_removed),
|
|
source_core);
|
|
|
|
g_object_notify (G_OBJECT (source_core), "src-drawable");
|
|
}
|