705 lines
25 KiB
C
705 lines
25 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) 1995-2001 Spencer Kimball, Peter Mattis, and others
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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 <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikacolor/pikacolor.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "tools-types.h"
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#include "config/pikadisplayconfig.h"
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#include "core/pika.h"
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#include "core/pikadata.h"
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#include "core/pikaimage.h"
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#include "core/pikaimage-pick-color.h"
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#include "core/pikaimage-pick-item.h"
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#include "core/pikaimage-sample-points.h"
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#include "core/pikamarshal.h"
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#include "core/pikasamplepoint.h"
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#include "widgets/pikacolormapeditor.h"
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#include "widgets/pikadialogfactory.h"
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#include "widgets/pikadockable.h"
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#include "widgets/pikadockcontainer.h"
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#include "widgets/pikapaletteeditor.h"
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#include "widgets/pikawidgets-utils.h"
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#include "widgets/pikawindowstrategy.h"
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#include "display/pikacanvasitem.h"
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#include "display/pikadisplay.h"
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#include "display/pikadisplayshell.h"
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#include "display/pikadisplayshell-appearance.h"
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#include "pikacoloroptions.h"
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#include "pikacolortool.h"
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#include "pikasamplepointtool.h"
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#include "pikatoolcontrol.h"
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#include "pika-intl.h"
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enum
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{
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PICKED,
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LAST_SIGNAL
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};
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/* local function prototypes */
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static void pika_color_tool_finalize (GObject *object);
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static void pika_color_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_color_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_color_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 void pika_color_tool_oper_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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gboolean proximity,
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PikaDisplay *display);
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static void pika_color_tool_cursor_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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PikaDisplay *display);
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static void pika_color_tool_draw (PikaDrawTool *draw_tool);
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static gboolean
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pika_color_tool_real_can_pick (PikaColorTool *color_tool,
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const PikaCoords *coords,
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PikaDisplay *display);
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static gboolean pika_color_tool_real_pick (PikaColorTool *color_tool,
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const PikaCoords *coords,
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PikaDisplay *display,
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const Babl **sample_format,
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gpointer pixel,
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PikaRGB *color);
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static void pika_color_tool_real_picked (PikaColorTool *color_tool,
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const PikaCoords *coords,
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PikaDisplay *display,
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PikaColorPickState pick_state,
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const Babl *sample_format,
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gpointer pixel,
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const PikaRGB *color);
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static gboolean pika_color_tool_can_pick (PikaColorTool *tool,
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const PikaCoords *coords,
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PikaDisplay *display);
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static void pika_color_tool_pick (PikaColorTool *tool,
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const PikaCoords *coords,
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PikaDisplay *display,
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PikaColorPickState pick_state);
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G_DEFINE_TYPE (PikaColorTool, pika_color_tool, PIKA_TYPE_DRAW_TOOL)
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#define parent_class pika_color_tool_parent_class
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static guint pika_color_tool_signals[LAST_SIGNAL] = { 0 };
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static void
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pika_color_tool_class_init (PikaColorToolClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
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PikaDrawToolClass *draw_class = PIKA_DRAW_TOOL_CLASS (klass);
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pika_color_tool_signals[PICKED] =
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g_signal_new ("picked",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (PikaColorToolClass, picked),
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NULL, NULL,
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pika_marshal_VOID__POINTER_OBJECT_ENUM_POINTER_POINTER_BOXED,
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G_TYPE_NONE, 6,
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G_TYPE_POINTER,
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PIKA_TYPE_DISPLAY,
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PIKA_TYPE_COLOR_PICK_STATE,
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G_TYPE_POINTER,
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G_TYPE_POINTER,
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PIKA_TYPE_RGB | G_SIGNAL_TYPE_STATIC_SCOPE);
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object_class->finalize = pika_color_tool_finalize;
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tool_class->button_press = pika_color_tool_button_press;
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tool_class->button_release = pika_color_tool_button_release;
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tool_class->motion = pika_color_tool_motion;
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tool_class->oper_update = pika_color_tool_oper_update;
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tool_class->cursor_update = pika_color_tool_cursor_update;
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draw_class->draw = pika_color_tool_draw;
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klass->can_pick = pika_color_tool_real_can_pick;
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klass->pick = pika_color_tool_real_pick;
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klass->picked = pika_color_tool_real_picked;
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}
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static void
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pika_color_tool_init (PikaColorTool *color_tool)
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{
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PikaTool *tool = PIKA_TOOL (color_tool);
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pika_tool_control_set_action_size (tool->control,
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"tools-color-average-radius-set");
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}
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static void
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pika_color_tool_finalize (GObject *object)
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{
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PikaColorTool *color_tool = PIKA_COLOR_TOOL (object);
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g_clear_object (&color_tool->options);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_color_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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PikaColorTool *color_tool = PIKA_COLOR_TOOL (tool);
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if (color_tool->enabled)
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{
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if (color_tool->sample_point)
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{
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pika_sample_point_tool_start_edit (tool, display,
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color_tool->sample_point);
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}
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else if (pika_color_tool_can_pick (color_tool, coords, display))
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{
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pika_color_tool_pick (color_tool, coords, display,
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PIKA_COLOR_PICK_STATE_START);
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pika_tool_control_activate (tool->control);
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}
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}
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else
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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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}
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static void
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pika_color_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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PikaColorTool *color_tool = PIKA_COLOR_TOOL (tool);
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if (color_tool->enabled)
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{
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pika_tool_control_halt (tool->control);
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if (! color_tool->sample_point &&
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pika_color_tool_can_pick (color_tool, coords, display))
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{
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pika_color_tool_pick (color_tool, coords, display,
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PIKA_COLOR_PICK_STATE_END);
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}
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}
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else
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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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}
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static void
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pika_color_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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PikaColorTool *color_tool = PIKA_COLOR_TOOL (tool);
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if (color_tool->enabled)
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{
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if (! color_tool->sample_point)
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{
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pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
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color_tool->can_pick = pika_color_tool_can_pick (color_tool,
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coords, display);
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color_tool->center_x = coords->x;
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color_tool->center_y = coords->y;
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if (color_tool->can_pick)
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{
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pika_color_tool_pick (color_tool, coords, display,
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PIKA_COLOR_PICK_STATE_UPDATE);
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}
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pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
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}
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}
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else
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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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}
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static void
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pika_color_tool_oper_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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gboolean proximity,
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PikaDisplay *display)
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{
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PikaColorTool *color_tool = PIKA_COLOR_TOOL (tool);
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if (color_tool->enabled)
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{
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PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
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PikaDisplayShell *shell = pika_display_get_shell (display);
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PikaSamplePoint *sample_point = NULL;
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pika_draw_tool_pause (draw_tool);
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if (! draw_tool->widget &&
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pika_draw_tool_is_active (draw_tool) &&
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(draw_tool->display != display ||
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! proximity))
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{
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pika_draw_tool_stop (draw_tool);
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}
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if (pika_display_shell_get_show_sample_points (shell) &&
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proximity)
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{
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PikaImage *image = pika_display_get_image (display);
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gint snap_distance = display->config->snap_distance;
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sample_point =
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pika_image_pick_sample_point (image,
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coords->x, coords->y,
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FUNSCALEX (shell, snap_distance),
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FUNSCALEY (shell, snap_distance));
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}
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color_tool->sample_point = sample_point;
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color_tool->can_pick = pika_color_tool_can_pick (color_tool,
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coords, display);
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color_tool->center_x = coords->x;
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color_tool->center_y = coords->y;
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if (! draw_tool->widget &&
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! pika_draw_tool_is_active (draw_tool) &&
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proximity)
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{
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pika_draw_tool_start (draw_tool, display);
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}
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pika_draw_tool_resume (draw_tool);
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}
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else
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{
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PIKA_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
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proximity, display);
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}
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}
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static void
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pika_color_tool_cursor_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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PikaDisplay *display)
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{
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PikaColorTool *color_tool = PIKA_COLOR_TOOL (tool);
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if (color_tool->enabled)
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{
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if (color_tool->sample_point)
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{
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pika_tool_set_cursor (tool, display,
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PIKA_CURSOR_MOUSE,
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PIKA_TOOL_CURSOR_COLOR_PICKER,
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PIKA_CURSOR_MODIFIER_MOVE);
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}
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else
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{
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PikaCursorModifier modifier = PIKA_CURSOR_MODIFIER_BAD;
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if (pika_color_tool_can_pick (color_tool, coords, display))
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{
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switch (color_tool->pick_target)
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{
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case PIKA_COLOR_PICK_TARGET_NONE:
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modifier = PIKA_CURSOR_MODIFIER_NONE;
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break;
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case PIKA_COLOR_PICK_TARGET_FOREGROUND:
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modifier = PIKA_CURSOR_MODIFIER_FOREGROUND;
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break;
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case PIKA_COLOR_PICK_TARGET_BACKGROUND:
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modifier = PIKA_CURSOR_MODIFIER_BACKGROUND;
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break;
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case PIKA_COLOR_PICK_TARGET_PALETTE:
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modifier = PIKA_CURSOR_MODIFIER_PLUS;
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break;
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}
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}
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pika_tool_set_cursor (tool, display,
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PIKA_CURSOR_COLOR_PICKER,
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PIKA_TOOL_CURSOR_COLOR_PICKER,
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modifier);
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}
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}
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else
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{
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PIKA_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state,
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display);
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}
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}
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static void
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pika_color_tool_draw (PikaDrawTool *draw_tool)
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{
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PikaColorTool *color_tool = PIKA_COLOR_TOOL (draw_tool);
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PIKA_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
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if (color_tool->enabled)
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{
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if (color_tool->sample_point)
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{
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PikaImage *image = pika_display_get_image (draw_tool->display);
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PikaCanvasItem *item;
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gint index;
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gint x;
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gint y;
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pika_sample_point_get_position (color_tool->sample_point, &x, &y);
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index = g_list_index (pika_image_get_sample_points (image),
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color_tool->sample_point) + 1;
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item = pika_draw_tool_add_sample_point (draw_tool, x, y, index);
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pika_canvas_item_set_highlight (item, TRUE);
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}
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else if (color_tool->can_pick && color_tool->options->sample_average)
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{
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gdouble radius = color_tool->options->average_radius;
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pika_draw_tool_add_rectangle (draw_tool,
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FALSE,
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color_tool->center_x - radius,
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color_tool->center_y - radius,
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2 * radius + 1,
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2 * radius + 1);
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}
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}
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}
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static gboolean
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pika_color_tool_real_can_pick (PikaColorTool *color_tool,
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const PikaCoords *coords,
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PikaDisplay *display)
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{
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PikaDisplayShell *shell = pika_display_get_shell (display);
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PikaImage *image = pika_display_get_image (display);
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return pika_image_coords_in_active_pickable (image, coords,
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shell->show_all,
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color_tool->options->sample_merged,
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FALSE);
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}
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static gboolean
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pika_color_tool_real_pick (PikaColorTool *color_tool,
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const PikaCoords *coords,
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PikaDisplay *display,
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const Babl **sample_format,
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gpointer pixel,
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PikaRGB *color)
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{
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PikaDisplayShell *shell = pika_display_get_shell (display);
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PikaImage *image = pika_display_get_image (display);
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GList *drawables = pika_image_get_selected_drawables (image);
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g_return_val_if_fail (drawables != NULL, FALSE);
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return pika_image_pick_color (image, drawables,
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coords->x, coords->y,
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shell->show_all,
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color_tool->options->sample_merged,
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color_tool->options->sample_average,
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color_tool->options->average_radius,
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sample_format,
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pixel,
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color);
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}
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static void
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pika_color_tool_real_picked (PikaColorTool *color_tool,
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const PikaCoords *coords,
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PikaDisplay *display,
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PikaColorPickState pick_state,
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const Babl *sample_format,
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gpointer pixel,
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const PikaRGB *color)
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{
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PikaTool *tool = PIKA_TOOL (color_tool);
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PikaDisplayShell *shell = pika_display_get_shell (display);
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PikaImageWindow *image_window;
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PikaDialogFactory *dialog_factory;
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PikaContext *context;
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image_window = pika_display_shell_get_window (shell);
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dialog_factory = pika_dock_container_get_dialog_factory (PIKA_DOCK_CONTAINER (image_window));
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/* use this tool's own options here (NOT color_tool->options) */
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context = PIKA_CONTEXT (pika_tool_get_options (tool));
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if (color_tool->pick_target == PIKA_COLOR_PICK_TARGET_FOREGROUND ||
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color_tool->pick_target == PIKA_COLOR_PICK_TARGET_BACKGROUND)
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{
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GtkWidget *widget;
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widget = pika_dialog_factory_find_widget (dialog_factory,
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"pika-indexed-palette");
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if (widget)
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{
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GtkWidget *editor = gtk_bin_get_child (GTK_BIN (widget));
|
|
PikaImage *image = pika_display_get_image (display);
|
|
|
|
if (babl_format_is_palette (sample_format))
|
|
{
|
|
guchar *index = pixel;
|
|
|
|
pika_colormap_editor_set_index (PIKA_COLORMAP_EDITOR (editor),
|
|
*index, NULL);
|
|
}
|
|
else if (pika_image_get_base_type (image) == PIKA_INDEXED)
|
|
{
|
|
/* When Sample merged is set, we don't have the index
|
|
* information and it is possible to pick colors out of
|
|
* the colormap (with compositing). In such a case, the
|
|
* sample format will not be a palette format even though
|
|
* the image is indexed. Still search if the color exists
|
|
* in the colormap.
|
|
* Note that even if it does, we might still pick the
|
|
* wrong color, since several indexes may contain the same
|
|
* color and we can't know for sure which is the right
|
|
* one.
|
|
*/
|
|
gint index = pika_colormap_editor_get_index (PIKA_COLORMAP_EDITOR (editor),
|
|
color);
|
|
if (index > -1)
|
|
pika_colormap_editor_set_index (PIKA_COLORMAP_EDITOR (editor),
|
|
index, NULL);
|
|
}
|
|
}
|
|
|
|
widget = pika_dialog_factory_find_widget (dialog_factory,
|
|
"pika-palette-editor");
|
|
if (widget)
|
|
{
|
|
GtkWidget *editor = gtk_bin_get_child (GTK_BIN (widget));
|
|
gint index;
|
|
|
|
index = pika_palette_editor_get_index (PIKA_PALETTE_EDITOR (editor),
|
|
color);
|
|
if (index != -1)
|
|
pika_palette_editor_set_index (PIKA_PALETTE_EDITOR (editor),
|
|
index, NULL);
|
|
}
|
|
}
|
|
|
|
switch (color_tool->pick_target)
|
|
{
|
|
case PIKA_COLOR_PICK_TARGET_NONE:
|
|
break;
|
|
|
|
case PIKA_COLOR_PICK_TARGET_FOREGROUND:
|
|
pika_context_set_foreground (context, color);
|
|
break;
|
|
|
|
case PIKA_COLOR_PICK_TARGET_BACKGROUND:
|
|
pika_context_set_background (context, color);
|
|
break;
|
|
|
|
case PIKA_COLOR_PICK_TARGET_PALETTE:
|
|
{
|
|
GdkMonitor *monitor = pika_widget_get_monitor (GTK_WIDGET (shell));
|
|
GtkWidget *dockable;
|
|
|
|
dockable =
|
|
pika_window_strategy_show_dockable_dialog (PIKA_WINDOW_STRATEGY (pika_get_window_strategy (display->pika)),
|
|
display->pika,
|
|
dialog_factory,
|
|
monitor,
|
|
"pika-palette-editor");
|
|
|
|
if (dockable)
|
|
{
|
|
GtkWidget *palette_editor;
|
|
PikaData *data;
|
|
|
|
/* don't blink like mad when updating */
|
|
if (pick_state != PIKA_COLOR_PICK_STATE_START)
|
|
pika_widget_blink_cancel (dockable);
|
|
|
|
palette_editor = gtk_bin_get_child (GTK_BIN (dockable));
|
|
|
|
data = pika_data_editor_get_data (PIKA_DATA_EDITOR (palette_editor));
|
|
|
|
if (! data)
|
|
{
|
|
data = PIKA_DATA (pika_context_get_palette (context));
|
|
|
|
pika_data_editor_set_data (PIKA_DATA_EDITOR (palette_editor),
|
|
data);
|
|
}
|
|
|
|
pika_palette_editor_pick_color (PIKA_PALETTE_EDITOR (palette_editor),
|
|
color, pick_state);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
pika_color_tool_can_pick (PikaColorTool *tool,
|
|
const PikaCoords *coords,
|
|
PikaDisplay *display)
|
|
{
|
|
PikaColorToolClass *klass;
|
|
|
|
klass = PIKA_COLOR_TOOL_GET_CLASS (tool);
|
|
|
|
return klass->can_pick && klass->can_pick (tool, coords, display);
|
|
}
|
|
|
|
static void
|
|
pika_color_tool_pick (PikaColorTool *tool,
|
|
const PikaCoords *coords,
|
|
PikaDisplay *display,
|
|
PikaColorPickState pick_state)
|
|
{
|
|
PikaColorToolClass *klass;
|
|
const Babl *sample_format;
|
|
gdouble pixel[4];
|
|
PikaRGB color;
|
|
|
|
klass = PIKA_COLOR_TOOL_GET_CLASS (tool);
|
|
|
|
if (klass->pick &&
|
|
klass->pick (tool, coords, display, &sample_format, pixel, &color))
|
|
{
|
|
g_signal_emit (tool, pika_color_tool_signals[PICKED], 0,
|
|
coords, display, pick_state,
|
|
sample_format, pixel, &color);
|
|
}
|
|
}
|
|
|
|
|
|
/* public functions */
|
|
|
|
void
|
|
pika_color_tool_enable (PikaColorTool *color_tool,
|
|
PikaColorOptions *options)
|
|
{
|
|
PikaTool *tool;
|
|
|
|
g_return_if_fail (PIKA_IS_COLOR_TOOL (color_tool));
|
|
g_return_if_fail (PIKA_IS_COLOR_OPTIONS (options));
|
|
|
|
tool = PIKA_TOOL (color_tool);
|
|
|
|
if (pika_tool_control_is_active (tool->control))
|
|
{
|
|
g_warning ("Trying to enable PikaColorTool while it is active.");
|
|
return;
|
|
}
|
|
|
|
g_set_object (&color_tool->options, options);
|
|
|
|
/* color picking doesn't snap, see bug #768058 */
|
|
color_tool->saved_snap_to = pika_tool_control_get_snap_to (tool->control);
|
|
pika_tool_control_set_snap_to (tool->control, FALSE);
|
|
|
|
color_tool->enabled = TRUE;
|
|
}
|
|
|
|
void
|
|
pika_color_tool_disable (PikaColorTool *color_tool)
|
|
{
|
|
PikaTool *tool;
|
|
|
|
g_return_if_fail (PIKA_IS_COLOR_TOOL (color_tool));
|
|
|
|
tool = PIKA_TOOL (color_tool);
|
|
|
|
if (pika_tool_control_is_active (tool->control))
|
|
{
|
|
g_warning ("Trying to disable PikaColorTool while it is active.");
|
|
return;
|
|
}
|
|
|
|
g_clear_object (&color_tool->options);
|
|
|
|
pika_tool_control_set_snap_to (tool->control, color_tool->saved_snap_to);
|
|
color_tool->saved_snap_to = FALSE;
|
|
|
|
color_tool->enabled = FALSE;
|
|
}
|
|
|
|
gboolean
|
|
pika_color_tool_is_enabled (PikaColorTool *color_tool)
|
|
{
|
|
return color_tool->enabled;
|
|
}
|
