mirror of https://github.com/GNOME/gimp.git
273 lines
8.5 KiB
C
273 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpmath/gimpmath.h"
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#include "libgimpconfig/gimpconfig.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "tools-types.h"
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#include "base/gimplut.h"
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#include "base/lut-funcs.h"
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#include "gegl/gimpposterizeconfig.h"
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#include "core/gimpdrawable.h"
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#include "core/gimperror.h"
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#include "core/gimpimage.h"
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#include "widgets/gimphelp-ids.h"
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#include "display/gimpdisplay.h"
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#include "gimpimagemapoptions.h"
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#include "gimpposterizetool.h"
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#include "gimp-intl.h"
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#define SLIDER_WIDTH 200
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static void gimp_posterize_tool_finalize (GObject *object);
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static gboolean gimp_posterize_tool_initialize (GimpTool *tool,
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GimpDisplay *display,
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GError **error);
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static GeglNode * gimp_posterize_tool_get_operation (GimpImageMapTool *im_tool,
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GObject **config);
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static void gimp_posterize_tool_map (GimpImageMapTool *im_tool);
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static void gimp_posterize_tool_dialog (GimpImageMapTool *im_tool);
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static void gimp_posterize_tool_config_notify (GObject *object,
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GParamSpec *pspec,
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GimpPosterizeTool *posterize_tool);
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static void gimp_posterize_tool_levels_changed (GtkAdjustment *adjustment,
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GimpPosterizeTool *posterize_tool);
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G_DEFINE_TYPE (GimpPosterizeTool, gimp_posterize_tool,
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GIMP_TYPE_IMAGE_MAP_TOOL)
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#define parent_class gimp_posterize_tool_parent_class
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void
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gimp_posterize_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_POSTERIZE_TOOL,
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GIMP_TYPE_IMAGE_MAP_OPTIONS, NULL,
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0,
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"gimp-posterize-tool",
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_("Posterize"),
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_("Posterize Tool: Reduce to a limited set of colors"),
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N_("_Posterize..."), NULL,
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NULL, GIMP_HELP_TOOL_POSTERIZE,
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GIMP_STOCK_TOOL_POSTERIZE,
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data);
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}
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static void
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gimp_posterize_tool_class_init (GimpPosterizeToolClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
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GimpImageMapToolClass *im_tool_class = GIMP_IMAGE_MAP_TOOL_CLASS (klass);
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object_class->finalize = gimp_posterize_tool_finalize;
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tool_class->initialize = gimp_posterize_tool_initialize;
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im_tool_class->shell_desc = _("Posterize (Reduce Number of Colors)");
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im_tool_class->get_operation = gimp_posterize_tool_get_operation;
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im_tool_class->map = gimp_posterize_tool_map;
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im_tool_class->dialog = gimp_posterize_tool_dialog;
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}
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static void
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gimp_posterize_tool_init (GimpPosterizeTool *posterize_tool)
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{
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GimpImageMapTool *im_tool = GIMP_IMAGE_MAP_TOOL (posterize_tool);
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posterize_tool->lut = gimp_lut_new ();
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im_tool->apply_func = (GimpImageMapApplyFunc) gimp_lut_process;
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im_tool->apply_data = posterize_tool->lut;
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}
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static void
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gimp_posterize_tool_finalize (GObject *object)
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{
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GimpPosterizeTool *posterize_tool = GIMP_POSTERIZE_TOOL (object);
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if (posterize_tool->lut)
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{
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gimp_lut_free (posterize_tool->lut);
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posterize_tool->lut = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gimp_posterize_tool_initialize (GimpTool *tool,
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GimpDisplay *display,
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GError **error)
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{
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GimpPosterizeTool *posterize_tool = GIMP_POSTERIZE_TOOL (tool);
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GimpDrawable *drawable;
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drawable = gimp_image_get_active_drawable (display->image);
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if (! drawable)
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return FALSE;
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if (gimp_drawable_is_indexed (drawable))
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{
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g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
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_("Posterize does not operate on indexed layers."));
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return FALSE;
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}
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gimp_config_reset (GIMP_CONFIG (posterize_tool->config));
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GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error);
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gtk_adjustment_set_value (posterize_tool->levels_data,
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posterize_tool->config->levels);
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gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (posterize_tool));
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return TRUE;
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}
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static GeglNode *
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gimp_posterize_tool_get_operation (GimpImageMapTool *image_map_tool,
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GObject **config)
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{
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GimpPosterizeTool *posterize_tool = GIMP_POSTERIZE_TOOL (image_map_tool);
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GeglNode *node;
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node = g_object_new (GEGL_TYPE_NODE,
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"operation", "gimp:posterize",
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NULL);
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posterize_tool->config = g_object_new (GIMP_TYPE_POSTERIZE_CONFIG, NULL);
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*config = G_OBJECT (posterize_tool->config);
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g_signal_connect_object (posterize_tool->config, "notify",
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G_CALLBACK (gimp_posterize_tool_config_notify),
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G_OBJECT (posterize_tool), 0);
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gegl_node_set (node,
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"config", posterize_tool->config,
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NULL);
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return node;
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}
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static void
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gimp_posterize_tool_map (GimpImageMapTool *image_map_tool)
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{
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GimpPosterizeTool *posterize_tool = GIMP_POSTERIZE_TOOL (image_map_tool);
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posterize_lut_setup (posterize_tool->lut,
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posterize_tool->config->levels,
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gimp_drawable_bytes (image_map_tool->drawable));
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}
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/**********************/
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/* Posterize dialog */
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/**********************/
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static void
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gimp_posterize_tool_dialog (GimpImageMapTool *image_map_tool)
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{
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GimpPosterizeTool *posterize_tool = GIMP_POSTERIZE_TOOL (image_map_tool);
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GtkWidget *main_vbox;
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GtkWidget *table;
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GtkWidget *slider;
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GtkObject *data;
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main_vbox = gimp_image_map_tool_dialog_get_vbox (image_map_tool);
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/* The table containing sliders */
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table = gtk_table_new (1, 3, FALSE);
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gtk_table_set_col_spacings (GTK_TABLE (table), 4);
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gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
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gtk_widget_show (table);
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data = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
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_("Posterize _levels:"), SLIDER_WIDTH, -1,
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posterize_tool->config->levels,
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2.0, 256.0, 1.0, 10.0, 0,
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TRUE, 0.0, 0.0,
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NULL, NULL);
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gimp_scale_entry_set_logarithmic (data, TRUE);
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posterize_tool->levels_data = GTK_ADJUSTMENT (data);
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slider = GIMP_SCALE_ENTRY_SCALE (data);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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g_signal_connect (posterize_tool->levels_data, "value-changed",
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G_CALLBACK (gimp_posterize_tool_levels_changed),
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posterize_tool);
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}
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static void
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gimp_posterize_tool_config_notify (GObject *object,
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GParamSpec *pspec,
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GimpPosterizeTool *posterize_tool)
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{
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GimpPosterizeConfig *config = GIMP_POSTERIZE_CONFIG (object);
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if (! posterize_tool->levels_data)
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return;
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gtk_adjustment_set_value (posterize_tool->levels_data, config->levels);
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gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (posterize_tool));
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}
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static void
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gimp_posterize_tool_levels_changed (GtkAdjustment *adjustment,
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GimpPosterizeTool *posterize_tool)
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{
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gint value = ROUND (gtk_adjustment_get_value (adjustment));
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if (posterize_tool->config->levels != value)
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{
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g_object_set (posterize_tool->config,
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"levels", value,
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NULL);
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}
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}
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