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-rw-r--r--app/tools/gimpbrightnesscontrasttool.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/app/tools/gimpbrightnesscontrasttool.c b/app/tools/gimpbrightnesscontrasttool.c
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+++ b/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 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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