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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 3 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, see <https://www.gnu.org/licenses/>.
*/
#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 "operations/gimpbrightnesscontrastconfig.h"
#include "core/gimpdrawable.h"
#include "core/gimperror.h"
#include "core/gimpimage.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimppropwidgets.h"
#include "widgets/gimpspinscale.h"
#include "widgets/gimpwidgets-constructors.h"
#include "display/gimpdisplay.h"
#include "gimpbrightnesscontrasttool.h"
#include "gimpfilteroptions.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
#define SLIDER_WIDTH 200
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,
GimpButtonPressType press_type,
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 gchar *
gimp_brightness_contrast_tool_get_operation (GimpFilterTool *filter_tool,
gchar **description);
static void gimp_brightness_contrast_tool_dialog (GimpFilterTool *filter_tool);
static void brightness_contrast_to_levels_callback (GtkWidget *widget,
GimpFilterTool *filter_tool);
G_DEFINE_TYPE (GimpBrightnessContrastTool, gimp_brightness_contrast_tool,
GIMP_TYPE_FILTER_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_FILTER_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_ICON_TOOL_BRIGHTNESS_CONTRAST,
data);
}
static void
gimp_brightness_contrast_tool_class_init (GimpBrightnessContrastToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpFilterToolClass *filter_tool_class = GIMP_FILTER_TOOL_CLASS (klass);
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;
filter_tool_class->get_operation = gimp_brightness_contrast_tool_get_operation;
filter_tool_class->dialog = gimp_brightness_contrast_tool_dialog;
}
static void
gimp_brightness_contrast_tool_init (GimpBrightnessContrastTool *bc_tool)
{
}
static gboolean
gimp_brightness_contrast_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
if (gimp_drawable_get_component_type (drawable) == GIMP_COMPONENT_TYPE_U8)
{
gimp_prop_widget_set_factor (bc_tool->brightness_scale,
127.0, 1.0, 8.0, 0);
gimp_prop_widget_set_factor (bc_tool->contrast_scale,
127.0, 1.0, 8.0, 0);
}
else
{
gimp_prop_widget_set_factor (bc_tool->brightness_scale,
0.5, 0.01, 0.1, 3);
gimp_prop_widget_set_factor (bc_tool->contrast_scale,
0.5, 0.01, 0.1, 3);
}
return TRUE;
}
static gchar *
gimp_brightness_contrast_tool_get_operation (GimpFilterTool *filter_tool,
gchar **description)
{
*description = g_strdup (_("Adjust Brightness and Contrast"));
return g_strdup ("gimp:brightness-contrast");
}
static void
gimp_brightness_contrast_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
bc_tool->dragging = ! gimp_filter_tool_on_guide (GIMP_FILTER_TOOL (tool),
coords, display);
if (! bc_tool->dragging)
{
GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
}
else
{
gdouble brightness;
gdouble contrast;
g_object_get (GIMP_FILTER_TOOL (tool)->config,
"brightness", &brightness,
"contrast", &contrast,
NULL);
bc_tool->x = coords->x - contrast * 127.0;
bc_tool->y = coords->y + brightness * 127.0;
bc_tool->dx = contrast * 127.0;
bc_tool->dy = - brightness * 127.0;
tool->display = display;
gimp_tool_control_activate (tool->control);
}
}
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);
if (! bc_tool->dragging)
{
GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
release_type, display);
}
else
{
gimp_tool_control_halt (tool->control);
bc_tool->dragging = FALSE;
if (bc_tool->dx == 0 && bc_tool->dy == 0)
return;
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
gimp_config_reset (GIMP_CONFIG (GIMP_FILTER_TOOL (tool)->config));
}
}
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);
if (! bc_tool->dragging)
{
GIMP_TOOL_CLASS (parent_class)->motion (tool, coords, time, state,
display);
}
else
{
bc_tool->dx = (coords->x - bc_tool->x);
bc_tool->dy = - (coords->y - bc_tool->y);
g_object_set (GIMP_FILTER_TOOL (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);
}
}
/********************************/
/* Brightness Contrast dialog */
/********************************/
static void
gimp_brightness_contrast_tool_dialog (GimpFilterTool *filter_tool)
{
GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (filter_tool);
GtkWidget *main_vbox;
GtkWidget *scale;
GtkWidget *button;
main_vbox = gimp_filter_tool_dialog_get_vbox (filter_tool);
/* Create the brightness scale widget */
scale = gimp_prop_spin_scale_new (filter_tool->config, "brightness",
_("_Brightness"), 0.01, 0.1, 3);
gtk_box_pack_start (GTK_BOX (main_vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
bc_tool->brightness_scale = scale;
/* Create the contrast scale widget */
scale = gimp_prop_spin_scale_new (filter_tool->config, "contrast",
_("_Contrast"), 0.01, 0.1, 3);
gtk_box_pack_start (GTK_BOX (main_vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
bc_tool->contrast_scale = scale;
button = gimp_icon_button_new (GIMP_ICON_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),
filter_tool);
}
static void
brightness_contrast_to_levels_callback (GtkWidget *widget,
GimpFilterTool *filter_tool)
{
GimpLevelsConfig *levels;
levels = gimp_brightness_contrast_config_to_levels_config (GIMP_BRIGHTNESS_CONTRAST_CONFIG (filter_tool->config));
gimp_filter_tool_edit_as (filter_tool,
"gimp-levels-tool",
GIMP_CONFIG (levels));
g_object_unref (levels);
}
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