mirror of https://github.com/GNOME/gimp.git
315 lines
12 KiB
C
315 lines
12 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpconfig/gimpconfig.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "tools-types.h"
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#include "operations/gimpbrightnesscontrastconfig.h"
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#include "core/gimpdrawable.h"
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#include "core/gimperror.h"
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#include "core/gimpimage.h"
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#include "widgets/gimphelp-ids.h"
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#include "widgets/gimppropwidgets.h"
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#include "widgets/gimpspinscale.h"
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#include "widgets/gimpwidgets-constructors.h"
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#include "display/gimpdisplay.h"
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#include "gimpbrightnesscontrasttool.h"
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#include "gimpfilteroptions.h"
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#include "gimptoolcontrol.h"
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#include "gimp-intl.h"
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#define SLIDER_WIDTH 200
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static gboolean gimp_brightness_contrast_tool_initialize (GimpTool *tool,
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GimpDisplay *display,
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GError **error);
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static void gimp_brightness_contrast_tool_button_press (GimpTool *tool,
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const GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpButtonPressType press_type,
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GimpDisplay *display);
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static void gimp_brightness_contrast_tool_button_release (GimpTool *tool,
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const GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpButtonReleaseType release_type,
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GimpDisplay *display);
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static void gimp_brightness_contrast_tool_motion (GimpTool *tool,
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const GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *display);
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static gchar *
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gimp_brightness_contrast_tool_get_operation (GimpFilterTool *filter_tool,
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gchar **description);
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static void gimp_brightness_contrast_tool_dialog (GimpFilterTool *filter_tool);
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static void brightness_contrast_to_levels_callback (GtkWidget *widget,
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GimpFilterTool *filter_tool);
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G_DEFINE_TYPE (GimpBrightnessContrastTool, gimp_brightness_contrast_tool,
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GIMP_TYPE_FILTER_TOOL)
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#define parent_class gimp_brightness_contrast_tool_parent_class
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void
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gimp_brightness_contrast_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_BRIGHTNESS_CONTRAST_TOOL,
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GIMP_TYPE_FILTER_OPTIONS, NULL,
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0,
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"gimp-brightness-contrast-tool",
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_("Brightness-Contrast"),
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_("Adjust brightness and contrast"),
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N_("B_rightness-Contrast..."), NULL,
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NULL, GIMP_HELP_TOOL_BRIGHTNESS_CONTRAST,
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GIMP_ICON_TOOL_BRIGHTNESS_CONTRAST,
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data);
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}
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static void
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gimp_brightness_contrast_tool_class_init (GimpBrightnessContrastToolClass *klass)
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{
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GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
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GimpFilterToolClass *filter_tool_class = GIMP_FILTER_TOOL_CLASS (klass);
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tool_class->initialize = gimp_brightness_contrast_tool_initialize;
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tool_class->button_press = gimp_brightness_contrast_tool_button_press;
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tool_class->button_release = gimp_brightness_contrast_tool_button_release;
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tool_class->motion = gimp_brightness_contrast_tool_motion;
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filter_tool_class->get_operation = gimp_brightness_contrast_tool_get_operation;
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filter_tool_class->dialog = gimp_brightness_contrast_tool_dialog;
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}
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static void
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gimp_brightness_contrast_tool_init (GimpBrightnessContrastTool *bc_tool)
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{
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}
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static gboolean
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gimp_brightness_contrast_tool_initialize (GimpTool *tool,
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GimpDisplay *display,
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GError **error)
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{
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GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
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GimpImage *image = gimp_display_get_image (display);
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GimpDrawable *drawable = gimp_image_get_active_drawable (image);
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if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
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{
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return FALSE;
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}
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if (gimp_drawable_get_component_type (drawable) == GIMP_COMPONENT_TYPE_U8)
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{
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gimp_prop_widget_set_factor (bc_tool->brightness_scale,
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127.0, 1.0, 8.0, 0);
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gimp_prop_widget_set_factor (bc_tool->contrast_scale,
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127.0, 1.0, 8.0, 0);
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}
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else
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{
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gimp_prop_widget_set_factor (bc_tool->brightness_scale,
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0.5, 0.01, 0.1, 3);
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gimp_prop_widget_set_factor (bc_tool->contrast_scale,
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0.5, 0.01, 0.1, 3);
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}
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return TRUE;
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}
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static gchar *
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gimp_brightness_contrast_tool_get_operation (GimpFilterTool *filter_tool,
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gchar **description)
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{
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*description = g_strdup (_("Adjust Brightness and Contrast"));
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return g_strdup ("gimp:brightness-contrast");
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}
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static void
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gimp_brightness_contrast_tool_button_press (GimpTool *tool,
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const GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpButtonPressType press_type,
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GimpDisplay *display)
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{
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GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
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bc_tool->dragging = ! gimp_filter_tool_on_guide (GIMP_FILTER_TOOL (tool),
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coords, display);
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if (! bc_tool->dragging)
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{
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GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
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press_type, display);
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}
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else
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{
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gdouble brightness;
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gdouble contrast;
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g_object_get (GIMP_FILTER_TOOL (tool)->config,
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"brightness", &brightness,
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"contrast", &contrast,
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NULL);
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bc_tool->x = coords->x - contrast * 127.0;
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bc_tool->y = coords->y + brightness * 127.0;
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bc_tool->dx = contrast * 127.0;
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bc_tool->dy = - brightness * 127.0;
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tool->display = display;
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gimp_tool_control_activate (tool->control);
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}
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}
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static void
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gimp_brightness_contrast_tool_button_release (GimpTool *tool,
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const GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpButtonReleaseType release_type,
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GimpDisplay *display)
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{
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GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
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if (! bc_tool->dragging)
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{
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GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
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release_type, display);
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}
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else
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{
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gimp_tool_control_halt (tool->control);
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bc_tool->dragging = FALSE;
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if (bc_tool->dx == 0 && bc_tool->dy == 0)
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return;
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if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
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gimp_config_reset (GIMP_CONFIG (GIMP_FILTER_TOOL (tool)->config));
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}
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}
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static void
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gimp_brightness_contrast_tool_motion (GimpTool *tool,
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const GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *display)
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{
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GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (tool);
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if (! bc_tool->dragging)
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{
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GIMP_TOOL_CLASS (parent_class)->motion (tool, coords, time, state,
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display);
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}
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else
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{
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bc_tool->dx = (coords->x - bc_tool->x);
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bc_tool->dy = - (coords->y - bc_tool->y);
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g_object_set (GIMP_FILTER_TOOL (tool)->config,
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"brightness", CLAMP (bc_tool->dy, -127.0, 127.0) / 127.0,
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"contrast", CLAMP (bc_tool->dx, -127.0, 127.0) / 127.0,
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NULL);
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}
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}
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/********************************/
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/* Brightness Contrast dialog */
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/********************************/
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static void
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gimp_brightness_contrast_tool_dialog (GimpFilterTool *filter_tool)
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{
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GimpBrightnessContrastTool *bc_tool = GIMP_BRIGHTNESS_CONTRAST_TOOL (filter_tool);
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GtkWidget *main_vbox;
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GtkWidget *scale;
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GtkWidget *button;
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main_vbox = gimp_filter_tool_dialog_get_vbox (filter_tool);
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/* Create the brightness scale widget */
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scale = gimp_prop_spin_scale_new (filter_tool->config, "brightness",
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_("_Brightness"), 0.01, 0.1, 3);
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gtk_box_pack_start (GTK_BOX (main_vbox), scale, FALSE, FALSE, 0);
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gtk_widget_show (scale);
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bc_tool->brightness_scale = scale;
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/* Create the contrast scale widget */
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scale = gimp_prop_spin_scale_new (filter_tool->config, "contrast",
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_("_Contrast"), 0.01, 0.1, 3);
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gtk_box_pack_start (GTK_BOX (main_vbox), scale, FALSE, FALSE, 0);
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gtk_widget_show (scale);
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bc_tool->contrast_scale = scale;
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button = gimp_icon_button_new (GIMP_ICON_TOOL_LEVELS,
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_("Edit these Settings as Levels"));
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gtk_box_pack_start (GTK_BOX (main_vbox), button, FALSE, FALSE, 0);
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gtk_widget_show (button);
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g_signal_connect (button, "clicked",
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G_CALLBACK (brightness_contrast_to_levels_callback),
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filter_tool);
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}
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static void
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brightness_contrast_to_levels_callback (GtkWidget *widget,
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GimpFilterTool *filter_tool)
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{
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GimpLevelsConfig *levels;
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levels = gimp_brightness_contrast_config_to_levels_config (GIMP_BRIGHTNESS_CONTRAST_CONFIG (filter_tool->config));
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gimp_filter_tool_edit_as (filter_tool,
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"gimp-levels-tool",
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GIMP_CONFIG (levels));
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g_object_unref (levels);
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}
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