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gimp/app/tools/gimpbrightnesscontrasttool.c

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/* GIMP - The GNU 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 <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpconfig/gimpconfig.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "base/gimplut.h"
#include "base/lut-funcs.h"
#include "gegl/gimpbrightnesscontrastconfig.h"
#include "core/gimpdrawable.h"
#include "core/gimperror.h"
#include "core/gimpimage.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-constructors.h"
#include "display/gimpdisplay.h"
#include "gimpbrightnesscontrasttool.h"
#include "gimpimagemapoptions.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
#define SLIDER_WIDTH 200
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,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_brightness_contrast_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_brightness_contrast_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static GeglNode *
gimp_brightness_contrast_tool_get_operation (GimpImageMapTool *image_map_tool,
GObject **config);
static void gimp_brightness_contrast_tool_map (GimpImageMapTool *image_map_tool);
static void gimp_brightness_contrast_tool_dialog (GimpImageMapTool *image_map_tool);
static void brightness_contrast_config_notify (GObject *object,
GParamSpec *pspec,
GimpBrightnessContrastTool *bc_tool);
static void brightness_contrast_brightness_changed (GtkAdjustment *adj,
GimpBrightnessContrastTool *bc_tool);
static void brightness_contrast_contrast_changed (GtkAdjustment *adj,
GimpBrightnessContrastTool *bc_tool);
static void brightness_contrast_to_levels_callback (GtkWidget *widget,
GimpBrightnessContrastTool *bc_tool);
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->settings_name = "brightness-contrast";
im_tool_class->import_dialog_title = _("Import Brightness-Contrast settings");
im_tool_class->export_dialog_title = _("Export Brightness-Contrast settings");
im_tool_class->get_operation = gimp_brightness_contrast_tool_get_operation;
im_tool_class->map = gimp_brightness_contrast_tool_map;
im_tool_class->dialog = gimp_brightness_contrast_tool_dialog;
}
static void
gimp_brightness_contrast_tool_init (GimpBrightnessContrastTool *bc_tool)
{
GimpImageMapTool *im_tool = GIMP_IMAGE_MAP_TOOL (bc_tool);
bc_tool->lut = gimp_lut_new ();
im_tool->apply_func = (GimpImageMapApplyFunc) gimp_lut_process;
im_tool->apply_data = bc_tool->lut;
}
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_get_active_drawable (display->image);
if (! drawable)
return FALSE;
if (gimp_drawable_is_indexed (drawable))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Brightness-Contrast does not operate "
"on indexed layers."));
return FALSE;
}
gimp_config_reset (GIMP_CONFIG (bc_tool->config));
GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error);
return TRUE;
}
static GeglNode *
gimp_brightness_contrast_tool_get_operation (GimpImageMapTool *im_tool,
GObject **config)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (im_tool);
bc_tool->config = g_object_new (GIMP_TYPE_BRIGHTNESS_CONTRAST_CONFIG, NULL);
*config = G_OBJECT (bc_tool->config);
g_signal_connect_object (bc_tool->config, "notify",
G_CALLBACK (brightness_contrast_config_notify),
G_OBJECT (bc_tool), 0);
return g_object_new (GEGL_TYPE_NODE,
"operation", "gegl:brightness-contrast",
NULL);
}
static void
gimp_brightness_contrast_tool_map (GimpImageMapTool *im_tool)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (im_tool);
gimp_brightness_contrast_config_set_node (bc_tool->config,
im_tool->operation);
brightness_contrast_lut_setup (bc_tool->lut,
bc_tool->config->brightness / 2.0,
bc_tool->config->contrast,
gimp_drawable_bytes (im_tool->drawable));
}
static void
gimp_brightness_contrast_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
bc_tool->x = coords->x - bc_tool->config->contrast * 127.0;
bc_tool->y = coords->y + bc_tool->config->brightness * 127.0;
bc_tool->dx = bc_tool->config->contrast * 127.0;
bc_tool->dy = - bc_tool->config->brightness * 127.0;
gimp_tool_control_activate (tool->control);
tool->display = display;
}
static void
gimp_brightness_contrast_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
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 (release_type == GIMP_BUTTON_RELEASE_CANCEL)
gimp_config_reset (GIMP_CONFIG (bc_tool->config));
gimp_image_map_tool_preview (im_tool);
}
static void
gimp_brightness_contrast_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
gimp_tool_control_pause (tool->control);
bc_tool->dx = (coords->x - bc_tool->x);
bc_tool->dy = - (coords->y - bc_tool->y);
g_object_set (bc_tool->config,
"brightness", CLAMP (bc_tool->dy, -127.0, 127.0) / 127.0,
"contrast", CLAMP (bc_tool->dx, -127.0, 127.0) / 127.0,
NULL);
gimp_tool_control_resume (tool->control);
}
/********************************/
/* Brightness Contrast dialog */
/********************************/
static void
gimp_brightness_contrast_tool_dialog (GimpImageMapTool *image_map_tool)
{
GimpBrightnessContrastTool *bc_tool;
GimpBrightnessContrastConfig *config;
GtkWidget *main_vbox;
GtkWidget *table;
GtkWidget *slider;
GtkWidget *button;
GtkObject *data;
bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (image_map_tool);
config = bc_tool->config;
main_vbox = gimp_image_map_tool_dialog_get_vbox (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 (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,
config->brightness * 127.0,
-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_changed),
bc_tool);
/* Create the contrast scale widget */
data = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("Con_trast:"), SLIDER_WIDTH, -1,
config->contrast * 127.0,
-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_changed),
bc_tool);
button = gimp_stock_button_new (GIMP_STOCK_TOOL_LEVELS,
_("Edit these Settings as Levels"));
gtk_box_pack_start (GTK_BOX (main_vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (brightness_contrast_to_levels_callback),
bc_tool);
}
static void
brightness_contrast_config_notify (GObject *object,
GParamSpec *pspec,
GimpBrightnessContrastTool *bc_tool)
{
GimpBrightnessContrastConfig *config;
config = GIMP_BRIGHTNESS_CONTRAST_CONFIG (object);
if (! bc_tool->brightness_data)
return;
if (! strcmp (pspec->name, "brightness"))
{
gtk_adjustment_set_value (bc_tool->brightness_data,
config->brightness * 127.0);
}
else if (! strcmp (pspec->name, "contrast"))
{
gtk_adjustment_set_value (bc_tool->contrast_data,
config->contrast * 127.0);
}
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (bc_tool));
}
static void
brightness_contrast_brightness_changed (GtkAdjustment *adjustment,
GimpBrightnessContrastTool *bc_tool)
{
GimpBrightnessContrastConfig *config = bc_tool->config;
gdouble value;
value = gtk_adjustment_get_value (adjustment) / 127.0;
if (config->brightness != value)
{
g_object_set (config,
"brightness", value,
NULL);
}
}
static void
brightness_contrast_contrast_changed (GtkAdjustment *adjustment,
GimpBrightnessContrastTool *bc_tool)
{
GimpBrightnessContrastConfig *config = bc_tool->config;
gdouble value;
value = gtk_adjustment_get_value (adjustment) / 127.0;
if (config->contrast != value)
{
g_object_set (config,
"contrast", value,
NULL);
}
}
static void
brightness_contrast_to_levels_callback (GtkWidget *widget,
GimpBrightnessContrastTool *bc_tool)
{
GimpLevelsConfig *levels;
levels = gimp_brightness_contrast_config_to_levels_config (bc_tool->config);
gimp_image_map_tool_edit_as (GIMP_IMAGE_MAP_TOOL (bc_tool),
"gimp-levels-tool",
GIMP_CONFIG (levels));
g_object_unref (levels);
}
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