/* 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 "gimptoolcontrol.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_finalize (GObject *object); static gboolean gimp_brightness_contrast_tool_initialize (GimpTool *tool, GimpDisplay *display, GError **error); static void gimp_brightness_contrast_tool_button_press (GimpTool *tool, GimpCoords *coords, guint32 time, GdkModifierType state, GimpDisplay *display); static void gimp_brightness_contrast_tool_button_release (GimpTool *tool, GimpCoords *coords, guint32 time, GdkModifierType state, GimpDisplay *display); static void gimp_brightness_contrast_tool_motion (GimpTool *tool, GimpCoords *coords, guint32 time, GdkModifierType state, GimpDisplay *display); 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); G_DEFINE_TYPE (GimpBrightnessContrastTool, gimp_brightness_contrast_tool, GIMP_TYPE_IMAGE_MAP_TOOL) #define parent_class gimp_brightness_contrast_tool_parent_class 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"), _("Brightness/Contrast Tool: Adjust brightness and contrast"), N_("B_rightness-Contrast..."), NULL, NULL, GIMP_HELP_TOOL_BRIGHTNESS_CONTRAST, GIMP_STOCK_TOOL_BRIGHTNESS_CONTRAST, data); } static void gimp_brightness_contrast_tool_class_init (GimpBrightnessContrastToolClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass); GimpImageMapToolClass *im_tool_class = GIMP_IMAGE_MAP_TOOL_CLASS (klass); object_class->finalize = gimp_brightness_contrast_tool_finalize; tool_class->initialize = gimp_brightness_contrast_tool_initialize; tool_class->button_press = gimp_brightness_contrast_tool_button_press; tool_class->button_release = gimp_brightness_contrast_tool_button_release; tool_class->motion = gimp_brightness_contrast_tool_motion; im_tool_class->shell_desc = _("Adjust Brightness and Contrast"); im_tool_class->map = gimp_brightness_contrast_tool_map; im_tool_class->dialog = gimp_brightness_contrast_tool_dialog; im_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 *display, GError **error) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool); GimpDrawable *drawable; drawable = gimp_image_active_drawable (display->image); if (! drawable) return FALSE; if (gimp_drawable_is_indexed (drawable)) { g_set_error (error, 0, 0, _("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, display, error); brightness_contrast_update (bc_tool, ALL); return TRUE; } static void gimp_brightness_contrast_tool_map (GimpImageMapTool *im_tool) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (im_tool); brightness_contrast_lut_setup (bc_tool->lut, bc_tool->brightness / 255.0, bc_tool->contrast / 127.0, gimp_drawable_bytes (im_tool->drawable)); gimp_image_map_apply (im_tool->image_map, (GimpImageMapApplyFunc) gimp_lut_process, bc_tool->lut); } static void gimp_brightness_contrast_tool_button_press (GimpTool *tool, GimpCoords *coords, guint32 time, GdkModifierType state, GimpDisplay *display) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool); bc_tool->x = coords->x - bc_tool->contrast; bc_tool->y = coords->y + bc_tool->brightness; bc_tool->dx = bc_tool->contrast; bc_tool->dy = - bc_tool->brightness; gimp_tool_control_activate (tool->control); tool->display = display; } static void gimp_brightness_contrast_tool_button_release (GimpTool *tool, GimpCoords *coords, guint32 time, GdkModifierType state, GimpDisplay *display) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool); GimpImageMapTool *im_tool = GIMP_IMAGE_MAP_TOOL (tool); gimp_tool_control_halt (tool->control); if (bc_tool->dx == 0 && bc_tool->dy == 0) return; if ((state & GDK_BUTTON3_MASK)) gimp_brightness_contrast_tool_reset (im_tool); gimp_image_map_tool_preview (im_tool); } static void gimp_brightness_contrast_tool_motion (GimpTool *tool, GimpCoords *coords, guint32 time, GdkModifierType state, GimpDisplay *display) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool); GimpImageMapTool *im_tool = GIMP_IMAGE_MAP_TOOL (tool); gimp_tool_control_pause (tool->control); bc_tool->dx = (coords->x - bc_tool->x); bc_tool->dy = - (coords->y - bc_tool->y); bc_tool->brightness = CLAMP (bc_tool->dy, -127.0, 127.0); bc_tool->contrast = CLAMP (bc_tool->dx, -127.0, 127.0); brightness_contrast_update (bc_tool, ALL); gimp_image_map_tool_preview (im_tool); gimp_tool_control_resume (tool->control); } /********************************/ /* Brightness Contrast dialog */ /********************************/ static void gimp_brightness_contrast_tool_dialog (GimpImageMapTool *im_tool) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (im_tool); GtkWidget *table; GtkWidget *slider; GtkObject *data; /* 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 (im_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_CONTINUOUS); 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_CONTINUOUS); g_signal_connect (data, "value-changed", G_CALLBACK (brightness_contrast_contrast_adjustment_update), bc_tool); } static void gimp_brightness_contrast_tool_reset (GimpImageMapTool *im_tool) { GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (im_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 = 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 = 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)); } }