279 lines
10 KiB
C
279 lines
10 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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* gimpoperationlayermode.c
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* Copyright (C) 2008 Michael Natterer <mitch@gimp.org>
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* Copyright (C) 2008 Martin Nordholts <martinn@svn.gnome.org>
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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 <gegl-plugin.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "../operations-types.h"
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#include "gimpoperationlayermode.h"
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enum
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{
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PROP_0,
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PROP_LAYER_MODE,
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PROP_LINEAR,
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PROP_OPACITY,
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PROP_BLEND_TRC,
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PROP_COMPOSITE_TRC,
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PROP_COMPOSITE_MODE
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};
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static void gimp_operation_layer_mode_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_operation_layer_mode_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 void gimp_operation_layer_mode_prepare (GeglOperation *operation);
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static gboolean gimp_operation_layer_mode_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_prop,
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const GeglRectangle *result,
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gint level);
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G_DEFINE_TYPE (GimpOperationLayerMode, gimp_operation_layer_mode,
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GEGL_TYPE_OPERATION_POINT_COMPOSER3)
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#define parent_class gimp_operation_layer_mode_parent_class
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const Babl *_gimp_fish_rgba_to_perceptual = NULL;
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const Babl *_gimp_fish_perceptual_to_rgba = NULL;
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const Babl *_gimp_fish_perceptual_to_laba = NULL;
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const Babl *_gimp_fish_rgba_to_laba = NULL;
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const Babl *_gimp_fish_laba_to_rgba = NULL;
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const Babl *_gimp_fish_laba_to_perceptual = NULL;
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static void
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gimp_operation_layer_mode_class_init (GimpOperationLayerModeClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
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object_class->set_property = gimp_operation_layer_mode_set_property;
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object_class->get_property = gimp_operation_layer_mode_get_property;
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operation_class->prepare = gimp_operation_layer_mode_prepare;
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operation_class->process = gimp_operation_layer_mode_process;
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g_object_class_install_property (object_class, PROP_LAYER_MODE,
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g_param_spec_enum ("layer-mode",
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NULL, NULL,
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GIMP_TYPE_LAYER_MODE,
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GIMP_LAYER_MODE_NORMAL,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_LINEAR,
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g_param_spec_boolean ("linear",
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NULL, NULL,
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FALSE,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_OPACITY,
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g_param_spec_double ("opacity",
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NULL, NULL,
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0.0, 1.0, 1.0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_BLEND_TRC,
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g_param_spec_enum ("blend-trc",
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NULL, NULL,
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GIMP_TYPE_LAYER_COLOR_SPACE,
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GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_COMPOSITE_TRC,
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g_param_spec_enum ("composite-trc",
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NULL, NULL,
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GIMP_TYPE_LAYER_COLOR_SPACE,
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GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_COMPOSITE_MODE,
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g_param_spec_enum ("composite-mode",
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NULL, NULL,
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GIMP_TYPE_LAYER_COMPOSITE_MODE,
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GIMP_LAYER_COMPOSITE_SRC_OVER,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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_gimp_fish_rgba_to_perceptual = babl_fish ("RGBA float", "R'G'B'A float");
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_gimp_fish_perceptual_to_rgba = babl_fish ("R'G'B'A float", "RGBA float");
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_gimp_fish_perceptual_to_laba = babl_fish ("R'G'B'A float", "CIE Lab alpha float");
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_gimp_fish_rgba_to_laba = babl_fish ("RGBA float", "CIE Lab alpha float");
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_gimp_fish_laba_to_rgba = babl_fish ("CIE Lab alpha float", "RGBA float");
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_gimp_fish_laba_to_perceptual = babl_fish ("CIE Lab alpha float", "R'G'B'A float");
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}
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static void
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gimp_operation_layer_mode_init (GimpOperationLayerMode *self)
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{
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}
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static void
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gimp_operation_layer_mode_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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GimpOperationLayerMode *self = GIMP_OPERATION_LAYER_MODE (object);
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switch (property_id)
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{
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case PROP_LAYER_MODE:
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self->layer_mode = g_value_get_enum (value);
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break;
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case PROP_LINEAR:
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self->linear = g_value_get_boolean (value);
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break;
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case PROP_OPACITY:
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self->opacity = g_value_get_double (value);
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break;
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case PROP_BLEND_TRC:
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self->blend_trc = g_value_get_enum (value);
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break;
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case PROP_COMPOSITE_TRC:
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self->composite_trc = g_value_get_enum (value);
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break;
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case PROP_COMPOSITE_MODE:
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self->composite_mode = g_value_get_enum (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_operation_layer_mode_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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GimpOperationLayerMode *self = GIMP_OPERATION_LAYER_MODE (object);
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switch (property_id)
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{
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case PROP_LAYER_MODE:
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g_value_set_enum (value, self->layer_mode);
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break;
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case PROP_LINEAR:
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g_value_set_boolean (value, self->linear);
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break;
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case PROP_OPACITY:
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g_value_set_double (value, self->opacity);
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break;
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case PROP_BLEND_TRC:
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g_value_set_enum (value, self->blend_trc);
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break;
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case PROP_COMPOSITE_TRC:
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g_value_set_enum (value, self->composite_trc);
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break;
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case PROP_COMPOSITE_MODE:
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g_value_set_enum (value, self->composite_mode);
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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_operation_layer_mode_prepare (GeglOperation *operation)
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{
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GimpOperationLayerMode *self = GIMP_OPERATION_LAYER_MODE (operation);
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const Babl *format;
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if (self->linear)
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format = babl_format ("RGBA float");
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else
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format = babl_format ("R'G'B'A float");
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gegl_operation_set_format (operation, "input", format);
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gegl_operation_set_format (operation, "output", format);
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gegl_operation_set_format (operation, "aux", format);
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gegl_operation_set_format (operation, "aux2", babl_format ("Y float"));
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}
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static gboolean
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gimp_operation_layer_mode_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_prop,
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const GeglRectangle *result,
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gint level)
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{
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GimpOperationLayerMode *point = GIMP_OPERATION_LAYER_MODE (operation);
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if (point->opacity == 0.0 ||
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! gegl_operation_context_get_object (context, "aux"))
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{
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GObject *input;
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/* get the raw values, this does not increase the reference count */
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input = gegl_operation_context_get_object (context, "input");
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if (input)
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{
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gegl_operation_context_set_object (context, "output", input);
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return TRUE;
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}
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}
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/* chain up, which will create the needed buffers for our actual
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* process function
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*/
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return GEGL_OPERATION_CLASS (parent_class)->process (operation, context,
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output_prop, result,
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level);
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}
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