mirror of https://github.com/GNOME/gimp.git
266 lines
7.6 KiB
C
266 lines
7.6 KiB
C
/* The GIMP -- an 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 <gtk/gtk.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 "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimpimagemap.h"
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#include "display/gimpdisplay.h"
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#include "gimpposterizetool.h"
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#include "tool_manager.h"
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#include "libgimp/gimpintl.h"
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#define POSTERIZE_DEFAULT_LEVELS 3
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#define SLIDER_WIDTH 200
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static void gimp_posterize_tool_class_init (GimpPosterizeToolClass *klass);
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static void gimp_posterize_tool_init (GimpPosterizeTool *bc_tool);
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static void gimp_posterize_tool_finalize (GObject *object);
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static void gimp_posterize_tool_initialize (GimpTool *tool,
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GimpDisplay *gdisp);
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static void gimp_posterize_tool_map (GimpImageMapTool *image_map_tool);
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static void gimp_posterize_tool_dialog (GimpImageMapTool *image_map_tool);
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static void gimp_posterize_tool_reset (GimpImageMapTool *image_map_tool);
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static void posterize_levels_adjustment_update (GtkAdjustment *adjustment,
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GimpPosterizeTool *posterize_tool);
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static GimpImageMapToolClass *parent_class = NULL;
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/* functions */
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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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NULL,
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FALSE,
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"gimp-posterize-tool",
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_("Posterize"),
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_("Reduce image to a fixed number of colors"),
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N_("/Layer/Colors/Posterize..."), NULL,
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NULL, "tools/posterize.html",
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GIMP_STOCK_TOOL_POSTERIZE,
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data);
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}
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GType
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gimp_posterize_tool_get_type (void)
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{
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static GType tool_type = 0;
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if (! tool_type)
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{
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static const GTypeInfo tool_info =
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{
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sizeof (GimpPosterizeToolClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_posterize_tool_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpPosterizeTool),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_posterize_tool_init,
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};
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tool_type = g_type_register_static (GIMP_TYPE_IMAGE_MAP_TOOL,
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"GimpPosterizeTool",
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&tool_info, 0);
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}
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return tool_type;
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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;
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GimpToolClass *tool_class;
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GimpImageMapToolClass *image_map_tool_class;
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object_class = G_OBJECT_CLASS (klass);
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tool_class = GIMP_TOOL_CLASS (klass);
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image_map_tool_class = GIMP_IMAGE_MAP_TOOL_CLASS (klass);
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parent_class = g_type_class_peek_parent (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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image_map_tool_class->map = gimp_posterize_tool_map;
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image_map_tool_class->dialog = gimp_posterize_tool_dialog;
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image_map_tool_class->reset = gimp_posterize_tool_reset;
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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 *image_map_tool;
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image_map_tool = GIMP_IMAGE_MAP_TOOL (posterize_tool);
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image_map_tool->shell_title = _("Posterize");
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image_map_tool->shell_name = "posterize";
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posterize_tool->levels = POSTERIZE_DEFAULT_LEVELS;
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posterize_tool->lut = gimp_lut_new ();
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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;
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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 void
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gimp_posterize_tool_initialize (GimpTool *tool,
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GimpDisplay *gdisp)
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{
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GimpPosterizeTool *posterize_tool;
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posterize_tool = GIMP_POSTERIZE_TOOL (tool);
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if (gdisp &&
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gimp_drawable_is_indexed (gimp_image_active_drawable (gdisp->gimage)))
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{
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g_message (_("Posterize does not operate on indexed drawables."));
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return;
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}
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posterize_tool->levels = POSTERIZE_DEFAULT_LEVELS;
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GIMP_TOOL_CLASS (parent_class)->initialize (tool, gdisp);
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gtk_adjustment_set_value (GTK_ADJUSTMENT (posterize_tool->levels_data),
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posterize_tool->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_map (GimpImageMapTool *image_map_tool)
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{
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GimpPosterizeTool *posterize_tool;
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GimpTool *tool;
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posterize_tool = GIMP_POSTERIZE_TOOL (image_map_tool);
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tool = GIMP_TOOL (image_map_tool);
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posterize_lut_setup (posterize_tool->lut,
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posterize_tool->levels,
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gimp_drawable_bytes (image_map_tool->drawable));
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gimp_image_map_apply (image_map_tool->image_map,
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(GimpImageMapApplyFunc) gimp_lut_process_2,
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posterize_tool->lut);
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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;
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GtkWidget *table;
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GtkObject *data;
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posterize_tool = GIMP_POSTERIZE_TOOL (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 (image_map_tool->main_vbox), table,
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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:"),
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SLIDER_WIDTH, 75,
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posterize_tool->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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posterize_tool->levels_data = GTK_ADJUSTMENT (data);
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g_signal_connect (G_OBJECT (posterize_tool->levels_data), "value_changed",
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G_CALLBACK (posterize_levels_adjustment_update),
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posterize_tool);
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}
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static void
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gimp_posterize_tool_reset (GimpImageMapTool *image_map_tool)
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{
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GimpPosterizeTool *posterize_tool;
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posterize_tool = GIMP_POSTERIZE_TOOL (image_map_tool);
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posterize_tool->levels = POSTERIZE_DEFAULT_LEVELS;
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gtk_adjustment_set_value (GTK_ADJUSTMENT (posterize_tool->levels_data),
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posterize_tool->levels);
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}
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static void
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posterize_levels_adjustment_update (GtkAdjustment *adjustment,
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GimpPosterizeTool *posterize_tool)
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{
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if (posterize_tool->levels != adjustment->value)
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{
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posterize_tool->levels = adjustment->value;
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gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (posterize_tool));
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}
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}
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