/* The GIMP -- an image manipulation program * Copyright (C) 1995 Spencer Kimball and Peter Mattis * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include #include "libgimpwidgets/gimpwidgets.h" #include "tools-types.h" #include "base/gimplut.h" #include "base/lut-funcs.h" #include "core/gimpcontext.h" #include "core/gimpdrawable.h" #include "core/gimpimage.h" #include "core/gimpimagemap.h" #include "widgets/gimphelp-ids.h" #include "display/gimpdisplay.h" #include "gimpbrightnesscontrasttool.h" #include "gimpimagemapoptions.h" #include "gimp-intl.h" #define SLIDER_WIDTH 200 #define BRIGHTNESS 0x1 #define CONTRAST 0x2 #define ALL (BRIGHTNESS | CONTRAST) static void gimp_brightness_contrast_tool_class_init (GimpBrightnessContrastToolClass *klass); static void gimp_brightness_contrast_tool_init (GimpBrightnessContrastTool *bc_tool); static void gimp_brightness_contrast_tool_finalize (GObject *object); static gboolean gimp_brightness_contrast_tool_initialize (GimpTool *tool, GimpDisplay *gdisp); static void gimp_brightness_contrast_tool_map (GimpImageMapTool *image_map_tool); static void gimp_brightness_contrast_tool_dialog (GimpImageMapTool *image_map_tool); static void gimp_brightness_contrast_tool_reset (GimpImageMapTool *image_map_tool); static void brightness_contrast_update (GimpBrightnessContrastTool *bc_tool, gint update); static void brightness_contrast_brightness_adjustment_update (GtkAdjustment *adj, gpointer data); static void brightness_contrast_contrast_adjustment_update (GtkAdjustment *adj, gpointer data); static GimpImageMapToolClass *parent_class = NULL; /* functions */ void gimp_brightness_contrast_tool_register (GimpToolRegisterCallback callback, gpointer data) { (* callback) (GIMP_TYPE_BRIGHTNESS_CONTRAST_TOOL, GIMP_TYPE_IMAGE_MAP_OPTIONS, NULL, 0, "gimp-brightness-contrast-tool", _("Brightness-Contrast"), _("Adjust brightness and contrast"), N_("B_rightness-Contrast..."), NULL, NULL, GIMP_HELP_TOOL_BRIGHTNESS_CONTRAST, GIMP_STOCK_TOOL_BRIGHTNESS_CONTRAST, data); } GType gimp_brightness_contrast_tool_get_type (void) { static GType tool_type = 0; if (! tool_type) { static const GTypeInfo tool_info = { sizeof (GimpBrightnessContrastToolClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gimp_brightness_contrast_tool_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GimpBrightnessContrastTool), 0, /* n_preallocs */ (GInstanceInitFunc) gimp_brightness_contrast_tool_init, }; tool_type = g_type_register_static (GIMP_TYPE_IMAGE_MAP_TOOL, "GimpBrightnessContrastTool", &tool_info, 0); } return tool_type; } static void gimp_brightness_contrast_tool_class_init (GimpBrightnessContrastToolClass *klass) { GObjectClass *object_class; GimpToolClass *tool_class; GimpImageMapToolClass *image_map_tool_class; object_class = G_OBJECT_CLASS (klass); tool_class = GIMP_TOOL_CLASS (klass); image_map_tool_class = GIMP_IMAGE_MAP_TOOL_CLASS (klass); parent_class = g_type_class_peek_parent (klass); object_class->finalize = gimp_brightness_contrast_tool_finalize; tool_class->initialize = gimp_brightness_contrast_tool_initialize; image_map_tool_class->shell_desc = _("Adjust Brightness and Contrast"); image_map_tool_class->map = gimp_brightness_contrast_tool_map; image_map_tool_class->dialog = gimp_brightness_contrast_tool_dialog; image_map_tool_class->reset = gimp_brightness_contrast_tool_reset; } static void gimp_brightness_contrast_tool_init (GimpBrightnessContrastTool *bc_tool) { bc_tool->brightness = 0.0; bc_tool->contrast = 0.0; bc_tool->lut = gimp_lut_new (); } static void gimp_brightness_contrast_tool_finalize (GObject *object) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (object); if (bc_tool->lut) { gimp_lut_free (bc_tool->lut); bc_tool->lut = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } static gboolean gimp_brightness_contrast_tool_initialize (GimpTool *tool, GimpDisplay *gdisp) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool); GimpDrawable *drawable; drawable = gimp_image_active_drawable (gdisp->gimage); if (! drawable) return FALSE; if (gimp_drawable_is_indexed (drawable)) { g_message (_("Brightness-Contrast does not operate on indexed layers.")); return FALSE; } bc_tool->brightness = 0.0; bc_tool->contrast = 0.0; GIMP_TOOL_CLASS (parent_class)->initialize (tool, gdisp); brightness_contrast_update (bc_tool, ALL); return TRUE; } static void gimp_brightness_contrast_tool_map (GimpImageMapTool *image_map_tool) { GimpBrightnessContrastTool *bc_tool; bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (image_map_tool); brightness_contrast_lut_setup (bc_tool->lut, bc_tool->brightness / 255.0, bc_tool->contrast / 127.0, gimp_drawable_bytes (image_map_tool->drawable)); gimp_image_map_apply (image_map_tool->image_map, (GimpImageMapApplyFunc) gimp_lut_process_2, bc_tool->lut); } /********************************/ /* Brightness Contrast dialog */ /********************************/ static void gimp_brightness_contrast_tool_dialog (GimpImageMapTool *image_map_tool) { GimpBrightnessContrastTool *bc_tool; GtkWidget *table; GtkWidget *slider; GtkObject *data; bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (image_map_tool); /* The table containing sliders */ table = gtk_table_new (2, 3, FALSE); gtk_table_set_col_spacings (GTK_TABLE (table), 4); gtk_table_set_row_spacings (GTK_TABLE (table), 2); gtk_box_pack_start (GTK_BOX (image_map_tool->main_vbox), table, FALSE, FALSE, 0); gtk_widget_show (table); /* Create the brightness scale widget */ data = gimp_scale_entry_new (GTK_TABLE (table), 0, 0, _("_Brightness:"), SLIDER_WIDTH, -1, bc_tool->brightness, -127.0, 127.0, 1.0, 10.0, 0, TRUE, 0.0, 0.0, NULL, NULL); bc_tool->brightness_data = GTK_ADJUSTMENT (data); slider = GIMP_SCALE_ENTRY_SCALE (data); gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED); g_signal_connect (data, "value_changed", G_CALLBACK (brightness_contrast_brightness_adjustment_update), bc_tool); /* Create the contrast scale widget */ data = gimp_scale_entry_new (GTK_TABLE (table), 0, 1, _("Con_trast:"), SLIDER_WIDTH, -1, bc_tool->contrast, -127.0, 127.0, 1.0, 10.0, 0, TRUE, 0.0, 0.0, NULL, NULL); bc_tool->contrast_data = GTK_ADJUSTMENT (data); slider = GIMP_SCALE_ENTRY_SCALE (data); gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED); g_signal_connect (data, "value_changed", G_CALLBACK (brightness_contrast_contrast_adjustment_update), bc_tool); } static void gimp_brightness_contrast_tool_reset (GimpImageMapTool *image_map_tool) { GimpBrightnessContrastTool *bc_tool; bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (image_map_tool); bc_tool->brightness = 0.0; bc_tool->contrast = 0.0; brightness_contrast_update (bc_tool, ALL); } static void brightness_contrast_update (GimpBrightnessContrastTool *bc_tool, gint update) { if (update & BRIGHTNESS) gtk_adjustment_set_value (bc_tool->brightness_data, bc_tool->brightness); if (update & CONTRAST) gtk_adjustment_set_value (bc_tool->contrast_data, bc_tool->contrast); } static void brightness_contrast_brightness_adjustment_update (GtkAdjustment *adjustment, gpointer data) { GimpBrightnessContrastTool *bc_tool; bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (data); if (bc_tool->brightness != adjustment->value) { bc_tool->brightness = adjustment->value; gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (bc_tool)); } } static void brightness_contrast_contrast_adjustment_update (GtkAdjustment *adjustment, gpointer data) { GimpBrightnessContrastTool *bc_tool; bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (data); if (bc_tool->contrast != adjustment->value) { bc_tool->contrast = adjustment->value; gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (bc_tool)); } }