322 lines
10 KiB
C
322 lines
10 KiB
C
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/* 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 <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 "widgets-types.h"
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#include "config/pikacoreconfig.h"
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#include "core/pika.h"
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#include "core/pikacontext.h"
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#include "pikaaction.h"
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#include "pikaactiongroup.h"
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#include "pikaactionimpl.h"
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#include "pikacolordialog.h"
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#include "pikacolorpanel.h"
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#define RGBA_EPSILON 1e-6
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enum
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{
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RESPONSE,
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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_panel_dispose (GObject *object);
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static gboolean pika_color_panel_button_press (GtkWidget *widget,
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GdkEventButton *bevent);
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static void pika_color_panel_clicked (GtkButton *button);
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static void pika_color_panel_color_changed (PikaColorButton *button);
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static GType pika_color_panel_get_action_type (PikaColorButton *button);
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static void pika_color_panel_dialog_update (PikaColorDialog *dialog,
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const PikaRGB *color,
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PikaColorDialogState state,
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PikaColorPanel *panel);
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G_DEFINE_TYPE (PikaColorPanel, pika_color_panel, PIKA_TYPE_COLOR_BUTTON)
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#define parent_class pika_color_panel_parent_class
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static guint color_panel_signals[LAST_SIGNAL] = { 0, };
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static void
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pika_color_panel_class_init (PikaColorPanelClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass);
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PikaColorButtonClass *color_button_class = PIKA_COLOR_BUTTON_CLASS (klass);
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object_class->dispose = pika_color_panel_dispose;
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widget_class->button_press_event = pika_color_panel_button_press;
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button_class->clicked = pika_color_panel_clicked;
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color_button_class->color_changed = pika_color_panel_color_changed;
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color_button_class->get_action_type = pika_color_panel_get_action_type;
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color_panel_signals[RESPONSE] =
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g_signal_new ("response",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (PikaColorPanelClass, response),
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NULL, NULL, NULL,
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G_TYPE_NONE, 1,
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PIKA_TYPE_COLOR_DIALOG_STATE);
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}
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static void
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pika_color_panel_init (PikaColorPanel *panel)
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{
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panel->context = NULL;
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panel->color_dialog = NULL;
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}
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static void
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pika_color_panel_dispose (GObject *object)
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{
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PikaColorPanel *panel = PIKA_COLOR_PANEL (object);
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if (panel->color_dialog)
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{
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gtk_widget_destroy (panel->color_dialog);
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panel->color_dialog = NULL;
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}
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static gboolean
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pika_color_panel_button_press (GtkWidget *widget,
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GdkEventButton *bevent)
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{
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if (gdk_event_triggers_context_menu ((GdkEvent *) bevent))
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{
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PikaColorButton *color_button;
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PikaColorPanel *color_panel;
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GSimpleActionGroup *group;
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PikaAction *action;
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PikaRGB color;
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color_button = PIKA_COLOR_BUTTON (widget);
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color_panel = PIKA_COLOR_PANEL (widget);
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group = pika_color_button_get_action_group (color_button);
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action = PIKA_ACTION (g_action_map_lookup_action (G_ACTION_MAP (group), "use-foreground"));
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pika_action_set_visible (action, color_panel->context != NULL);
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action = PIKA_ACTION (g_action_map_lookup_action (G_ACTION_MAP (group), "use-background"));
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pika_action_set_visible (action, color_panel->context != NULL);
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if (color_panel->context)
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{
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action = PIKA_ACTION (g_action_map_lookup_action (G_ACTION_MAP (group), "use-foreground"));
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pika_context_get_foreground (color_panel->context, &color);
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g_object_set (action, "color", &color, NULL);
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action = PIKA_ACTION (g_action_map_lookup_action (G_ACTION_MAP (group), "use-background"));
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pika_context_get_background (color_panel->context, &color);
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g_object_set (action, "color", &color, NULL);
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}
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action = PIKA_ACTION (g_action_map_lookup_action (G_ACTION_MAP (group), "use-black"));
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pika_rgba_set (&color, 0.0, 0.0, 0.0, PIKA_OPACITY_OPAQUE);
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g_object_set (action, "color", &color, NULL);
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action = PIKA_ACTION (g_action_map_lookup_action (G_ACTION_MAP (group), "use-white"));
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pika_rgba_set (&color, 1.0, 1.0, 1.0, PIKA_OPACITY_OPAQUE);
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g_object_set (action, "color", &color, NULL);
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}
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if (GTK_WIDGET_CLASS (parent_class)->button_press_event)
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return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, bevent);
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return FALSE;
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}
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static void
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pika_color_panel_clicked (GtkButton *button)
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{
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PikaColorPanel *panel = PIKA_COLOR_PANEL (button);
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PikaRGB color;
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pika_color_button_get_color (PIKA_COLOR_BUTTON (button), &color);
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if (! panel->color_dialog)
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{
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PikaColorButton *color_button = PIKA_COLOR_BUTTON (button);
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panel->color_dialog =
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pika_color_dialog_new (NULL, panel->context, TRUE,
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pika_color_button_get_title (color_button),
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NULL, NULL,
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GTK_WIDGET (button),
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NULL, NULL,
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&color,
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pika_color_button_get_update (color_button),
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pika_color_button_has_alpha (color_button));
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g_signal_connect (panel->color_dialog, "destroy",
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G_CALLBACK (gtk_widget_destroyed),
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&panel->color_dialog);
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g_signal_connect (panel->color_dialog, "update",
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G_CALLBACK (pika_color_panel_dialog_update),
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panel);
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}
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else
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{
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pika_color_dialog_set_color (PIKA_COLOR_DIALOG (panel->color_dialog),
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&color);
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}
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gtk_window_present (GTK_WINDOW (panel->color_dialog));
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}
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static GType
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pika_color_panel_get_action_type (PikaColorButton *button)
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{
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return PIKA_TYPE_ACTION_IMPL;
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}
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/* public functions */
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GtkWidget *
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pika_color_panel_new (const gchar *title,
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const PikaRGB *color,
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PikaColorAreaType type,
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gint width,
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gint height)
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{
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g_return_val_if_fail (title != NULL, NULL);
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g_return_val_if_fail (color != NULL, NULL);
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g_return_val_if_fail (width > 0, NULL);
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g_return_val_if_fail (height > 0, NULL);
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return g_object_new (PIKA_TYPE_COLOR_PANEL,
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"title", title,
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"type", type,
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"color", color,
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"area-width", width,
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"area-height", height,
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NULL);
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}
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static void
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pika_color_panel_color_changed (PikaColorButton *button)
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{
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PikaColorPanel *panel = PIKA_COLOR_PANEL (button);
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PikaRGB color;
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if (panel->color_dialog)
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{
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PikaRGB dialog_color;
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pika_color_button_get_color (PIKA_COLOR_BUTTON (button), &color);
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pika_color_dialog_get_color (PIKA_COLOR_DIALOG (panel->color_dialog),
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&dialog_color);
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if (pika_rgba_distance (&color, &dialog_color) > RGBA_EPSILON ||
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color.a != dialog_color.a)
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{
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pika_color_dialog_set_color (PIKA_COLOR_DIALOG (panel->color_dialog),
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&color);
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}
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}
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}
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void
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pika_color_panel_set_context (PikaColorPanel *panel,
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PikaContext *context)
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{
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g_return_if_fail (PIKA_IS_COLOR_PANEL (panel));
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g_return_if_fail (context == NULL || PIKA_IS_CONTEXT (context));
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panel->context = context;
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if (context)
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pika_color_button_set_color_config (PIKA_COLOR_BUTTON (panel),
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context->pika->config->color_management);
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}
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void
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pika_color_panel_dialog_response (PikaColorPanel *panel,
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PikaColorDialogState state)
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{
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g_return_if_fail (PIKA_IS_COLOR_PANEL (panel));
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g_return_if_fail (state == PIKA_COLOR_DIALOG_OK ||
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state == PIKA_COLOR_DIALOG_CANCEL);
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if (panel->color_dialog && gtk_widget_get_visible (panel->color_dialog))
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pika_color_panel_dialog_update (NULL, NULL, state, panel);
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}
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/* private functions */
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static void
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pika_color_panel_dialog_update (PikaColorDialog *dialog,
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const PikaRGB *color,
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PikaColorDialogState state,
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PikaColorPanel *panel)
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{
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switch (state)
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{
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case PIKA_COLOR_DIALOG_UPDATE:
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if (pika_color_button_get_update (PIKA_COLOR_BUTTON (panel)))
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pika_color_button_set_color (PIKA_COLOR_BUTTON (panel), color);
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break;
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case PIKA_COLOR_DIALOG_OK:
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case PIKA_COLOR_DIALOG_CANCEL:
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/* PikaColorDialog returns the appropriate color (new one or
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* original one if process cancelled.
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*/
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pika_color_button_set_color (PIKA_COLOR_BUTTON (panel), color);
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gtk_widget_hide (panel->color_dialog);
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g_signal_emit (panel, color_panel_signals[RESPONSE], 0,
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state);
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break;
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}
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}
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