324 lines
12 KiB
C
324 lines
12 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 <https://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 "libpikaconfig/pikaconfig.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "tools-types.h"
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#include "operations/pikabrightnesscontrastconfig.h"
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#include "core/pikadrawable.h"
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#include "core/pikaerror.h"
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#include "core/pikaimage.h"
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#include "widgets/pikahelp-ids.h"
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#include "widgets/pikapropwidgets.h"
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#include "widgets/pikawidgets-constructors.h"
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#include "display/pikadisplay.h"
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#include "pikabrightnesscontrasttool.h"
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#include "pikafilteroptions.h"
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#include "pikatoolcontrol.h"
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#include "pika-intl.h"
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#define SLIDER_WIDTH 200
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static gboolean pika_brightness_contrast_tool_initialize (PikaTool *tool,
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PikaDisplay *display,
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GError **error);
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static void pika_brightness_contrast_tool_button_press (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonPressType press_type,
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PikaDisplay *display);
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static void pika_brightness_contrast_tool_button_release (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonReleaseType release_type,
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PikaDisplay *display);
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static void pika_brightness_contrast_tool_motion (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaDisplay *display);
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static gchar *
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pika_brightness_contrast_tool_get_operation (PikaFilterTool *filter_tool,
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gchar **description);
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static void pika_brightness_contrast_tool_dialog (PikaFilterTool *filter_tool);
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static void brightness_contrast_to_levels_callback (GtkWidget *widget,
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PikaFilterTool *filter_tool);
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G_DEFINE_TYPE (PikaBrightnessContrastTool, pika_brightness_contrast_tool,
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PIKA_TYPE_FILTER_TOOL)
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#define parent_class pika_brightness_contrast_tool_parent_class
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void
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pika_brightness_contrast_tool_register (PikaToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (PIKA_TYPE_BRIGHTNESS_CONTRAST_TOOL,
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PIKA_TYPE_FILTER_OPTIONS, NULL,
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0,
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"pika-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, PIKA_HELP_TOOL_BRIGHTNESS_CONTRAST,
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PIKA_ICON_TOOL_BRIGHTNESS_CONTRAST,
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data);
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}
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static void
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pika_brightness_contrast_tool_class_init (PikaBrightnessContrastToolClass *klass)
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{
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PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
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PikaFilterToolClass *filter_tool_class = PIKA_FILTER_TOOL_CLASS (klass);
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tool_class->initialize = pika_brightness_contrast_tool_initialize;
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tool_class->button_press = pika_brightness_contrast_tool_button_press;
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tool_class->button_release = pika_brightness_contrast_tool_button_release;
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tool_class->motion = pika_brightness_contrast_tool_motion;
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filter_tool_class->get_operation = pika_brightness_contrast_tool_get_operation;
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filter_tool_class->dialog = pika_brightness_contrast_tool_dialog;
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}
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static void
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pika_brightness_contrast_tool_init (PikaBrightnessContrastTool *bc_tool)
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{
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}
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static gboolean
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pika_brightness_contrast_tool_initialize (PikaTool *tool,
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PikaDisplay *display,
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GError **error)
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{
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PikaBrightnessContrastTool *bc_tool = PIKA_BRIGHTNESS_CONTRAST_TOOL (tool);
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PikaImage *image = pika_display_get_image (display);
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GList *drawables;
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if (! PIKA_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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drawables = pika_image_get_selected_drawables (image);
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/* Single drawable selection has been checked in parent initialize(). */
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g_return_val_if_fail (g_list_length (drawables) == 1, FALSE);
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if (pika_drawable_get_component_type (drawables->data) == PIKA_COMPONENT_TYPE_U8)
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{
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pika_prop_widget_set_factor (bc_tool->brightness_scale,
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127.0, 1.0, 8.0, 0);
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pika_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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pika_prop_widget_set_factor (bc_tool->brightness_scale,
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0.5, 0.01, 0.1, 3);
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pika_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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g_list_free (drawables);
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return TRUE;
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}
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static gchar *
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pika_brightness_contrast_tool_get_operation (PikaFilterTool *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 ("pika:brightness-contrast");
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}
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static void
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pika_brightness_contrast_tool_button_press (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonPressType press_type,
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PikaDisplay *display)
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{
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PikaBrightnessContrastTool *bc_tool = PIKA_BRIGHTNESS_CONTRAST_TOOL (tool);
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bc_tool->dragging = ! pika_filter_tool_on_guide (PIKA_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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PIKA_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 (PIKA_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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pika_tool_control_activate (tool->control);
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}
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}
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static void
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pika_brightness_contrast_tool_button_release (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonReleaseType release_type,
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PikaDisplay *display)
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{
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PikaBrightnessContrastTool *bc_tool = PIKA_BRIGHTNESS_CONTRAST_TOOL (tool);
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if (! bc_tool->dragging)
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{
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PIKA_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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pika_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 == PIKA_BUTTON_RELEASE_CANCEL)
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pika_config_reset (PIKA_CONFIG (PIKA_FILTER_TOOL (tool)->config));
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}
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}
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static void
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pika_brightness_contrast_tool_motion (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaDisplay *display)
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{
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PikaBrightnessContrastTool *bc_tool = PIKA_BRIGHTNESS_CONTRAST_TOOL (tool);
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if (! bc_tool->dragging)
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{
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PIKA_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 (PIKA_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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pika_brightness_contrast_tool_dialog (PikaFilterTool *filter_tool)
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{
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PikaBrightnessContrastTool *bc_tool = PIKA_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 = pika_filter_tool_dialog_get_vbox (filter_tool);
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/* Create the brightness scale widget */
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scale = pika_prop_spin_scale_new (filter_tool->config, "brightness",
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0.01, 0.1, 3);
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pika_spin_scale_set_label (PIKA_SPIN_SCALE (scale), _("_Brightness"));
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gtk_box_pack_start (GTK_BOX (main_vbox), scale, FALSE, FALSE, 0);
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bc_tool->brightness_scale = scale;
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/* Create the contrast scale widget */
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scale = pika_prop_spin_scale_new (filter_tool->config, "contrast",
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0.01, 0.1, 3);
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pika_spin_scale_set_label (PIKA_SPIN_SCALE (scale), _("_Contrast"));
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gtk_box_pack_start (GTK_BOX (main_vbox), scale, FALSE, FALSE, 0);
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bc_tool->contrast_scale = scale;
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button = pika_icon_button_new (PIKA_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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PikaFilterTool *filter_tool)
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{
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PikaLevelsConfig *levels;
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levels = pika_brightness_contrast_config_to_levels_config (PIKA_BRIGHTNESS_CONTRAST_CONFIG (filter_tool->config));
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pika_filter_tool_edit_as (filter_tool,
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"pika-levels-tool",
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PIKA_CONFIG (levels));
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g_object_unref (levels);
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}
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