475 lines
16 KiB
C
475 lines
16 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 "libpikabase/pikabase.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/pikalist.h"
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#include "core/pikaimage.h"
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#include "core/pikaimage-undo.h"
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#include "core/pikaundostack.h"
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#include "pikacontainertreeview.h"
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#include "pikacontainerview.h"
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#include "pikadocked.h"
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#include "pikahelp-ids.h"
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#include "pikamenufactory.h"
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#include "pikaundoeditor.h"
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#include "pika-intl.h"
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enum
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{
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PROP_0,
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PROP_VIEW_SIZE
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};
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static void pika_undo_editor_docked_iface_init (PikaDockedInterface *iface);
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static void pika_undo_editor_constructed (GObject *object);
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static void pika_undo_editor_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_undo_editor_set_image (PikaImageEditor *editor,
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PikaImage *image);
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static void pika_undo_editor_set_context (PikaDocked *docked,
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PikaContext *context);
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static void pika_undo_editor_fill (PikaUndoEditor *editor);
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static void pika_undo_editor_clear (PikaUndoEditor *editor);
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static void pika_undo_editor_undo_event (PikaImage *image,
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PikaUndoEvent event,
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PikaUndo *undo,
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PikaUndoEditor *editor);
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static gboolean pika_undo_editor_select_items (PikaContainerView *view,
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GList *undos,
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GList *paths,
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PikaUndoEditor *editor);
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G_DEFINE_TYPE_WITH_CODE (PikaUndoEditor, pika_undo_editor,
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PIKA_TYPE_IMAGE_EDITOR,
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G_IMPLEMENT_INTERFACE (PIKA_TYPE_DOCKED,
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pika_undo_editor_docked_iface_init))
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#define parent_class pika_undo_editor_parent_class
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static PikaDockedInterface *parent_docked_iface = NULL;
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static void
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pika_undo_editor_class_init (PikaUndoEditorClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaImageEditorClass *image_editor_class = PIKA_IMAGE_EDITOR_CLASS (klass);
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object_class->constructed = pika_undo_editor_constructed;
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object_class->set_property = pika_undo_editor_set_property;
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image_editor_class->set_image = pika_undo_editor_set_image;
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g_object_class_install_property (object_class, PROP_VIEW_SIZE,
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g_param_spec_enum ("view-size",
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NULL, NULL,
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PIKA_TYPE_VIEW_SIZE,
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PIKA_VIEW_SIZE_LARGE,
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PIKA_PARAM_WRITABLE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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pika_undo_editor_docked_iface_init (PikaDockedInterface *iface)
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{
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parent_docked_iface = g_type_interface_peek_parent (iface);
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if (! parent_docked_iface)
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parent_docked_iface = g_type_default_interface_peek (PIKA_TYPE_DOCKED);
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iface->set_context = pika_undo_editor_set_context;
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}
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static void
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pika_undo_editor_init (PikaUndoEditor *undo_editor)
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{
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}
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static void
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pika_undo_editor_constructed (GObject *object)
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{
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PikaUndoEditor *undo_editor = PIKA_UNDO_EDITOR (object);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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undo_editor->view = pika_container_tree_view_new (NULL, NULL,
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undo_editor->view_size,
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1);
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gtk_box_pack_start (GTK_BOX (undo_editor), undo_editor->view, TRUE, TRUE, 0);
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gtk_widget_show (undo_editor->view);
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g_signal_connect (undo_editor->view, "select-items",
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G_CALLBACK (pika_undo_editor_select_items),
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undo_editor);
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undo_editor->undo_button =
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pika_editor_add_action_button (PIKA_EDITOR (undo_editor), "edit",
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"edit-undo", NULL);
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undo_editor->redo_button =
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pika_editor_add_action_button (PIKA_EDITOR (undo_editor), "edit",
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"edit-redo", NULL);
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undo_editor->clear_button =
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pika_editor_add_action_button (PIKA_EDITOR (undo_editor), "edit",
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"edit-undo-clear", NULL);
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}
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static void
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pika_undo_editor_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaUndoEditor *undo_editor = PIKA_UNDO_EDITOR (object);
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switch (property_id)
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{
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case PROP_VIEW_SIZE:
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undo_editor->view_size = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_undo_editor_set_image (PikaImageEditor *image_editor,
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PikaImage *image)
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{
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PikaUndoEditor *editor = PIKA_UNDO_EDITOR (image_editor);
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if (image_editor->image)
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{
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pika_undo_editor_clear (editor);
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g_signal_handlers_disconnect_by_func (image_editor->image,
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pika_undo_editor_undo_event,
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editor);
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}
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PIKA_IMAGE_EDITOR_CLASS (parent_class)->set_image (image_editor, image);
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if (image_editor->image)
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{
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if (pika_image_undo_is_enabled (image_editor->image))
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pika_undo_editor_fill (editor);
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g_signal_connect (image_editor->image, "undo-event",
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G_CALLBACK (pika_undo_editor_undo_event),
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editor);
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}
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}
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static void
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pika_undo_editor_set_context (PikaDocked *docked,
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PikaContext *context)
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{
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PikaUndoEditor *editor = PIKA_UNDO_EDITOR (docked);
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if (editor->context)
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g_object_unref (editor->context);
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editor->context = context;
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if (editor->context)
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g_object_ref (editor->context);
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/* This calls pika_undo_editor_set_image(), so make sure that it
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* isn't called before editor->context has been initialized.
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*/
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parent_docked_iface->set_context (docked, context);
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pika_container_view_set_context (PIKA_CONTAINER_VIEW (editor->view),
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context);
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}
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/* public functions */
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GtkWidget *
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pika_undo_editor_new (PikaCoreConfig *config,
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PikaMenuFactory *menu_factory)
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{
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g_return_val_if_fail (PIKA_IS_CORE_CONFIG (config), NULL);
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g_return_val_if_fail (PIKA_IS_MENU_FACTORY (menu_factory), NULL);
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return g_object_new (PIKA_TYPE_UNDO_EDITOR,
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"menu-factory", menu_factory,
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"menu-identifier", "<Undo>",
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"ui-path", "/undo-popup",
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"view-size", config->undo_preview_size,
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NULL);
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}
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/* private functions */
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static void
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pika_undo_editor_fill (PikaUndoEditor *editor)
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{
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PikaImage *image = PIKA_IMAGE_EDITOR (editor)->image;
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PikaUndoStack *undo_stack = pika_image_get_undo_stack (image);
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PikaUndoStack *redo_stack = pika_image_get_redo_stack (image);
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PikaUndo *top_undo_item;
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GList *list;
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/* create a container as model for the undo history list */
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editor->container = pika_list_new (PIKA_TYPE_UNDO, FALSE);
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editor->base_item = g_object_new (PIKA_TYPE_UNDO,
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"image", image,
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"name", _("[ Base Image ]"),
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NULL);
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/* the list prepends its items, so first add the redo items in
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* reverse (ascending) order...
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*/
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for (list = PIKA_LIST (redo_stack->undos)->queue->tail;
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list;
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list = g_list_previous (list))
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{
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pika_container_add (editor->container, PIKA_OBJECT (list->data));
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}
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/* ...then add the undo items in descending order... */
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for (list = PIKA_LIST (undo_stack->undos)->queue->head;
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list;
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list = g_list_next (list))
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{
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/* Don't add the topmost item if it is an open undo group,
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* it will be added upon closing of the group.
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*/
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if (list->prev || ! PIKA_IS_UNDO_STACK (list->data) ||
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pika_image_get_undo_group_count (image) == 0)
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{
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pika_container_add (editor->container, PIKA_OBJECT (list->data));
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}
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}
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/* ...finally, the first item is the special "base_item" which stands
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* for the image with no more undos available to pop
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*/
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pika_container_add (editor->container, PIKA_OBJECT (editor->base_item));
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/* display the container */
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pika_container_view_set_container (PIKA_CONTAINER_VIEW (editor->view),
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editor->container);
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top_undo_item = pika_undo_stack_peek (undo_stack);
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g_signal_handlers_block_by_func (editor->view,
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pika_undo_editor_select_items,
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editor);
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/* select the current state of the image */
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if (top_undo_item)
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{
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pika_container_view_select_item (PIKA_CONTAINER_VIEW (editor->view),
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PIKA_VIEWABLE (top_undo_item));
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pika_undo_create_preview (top_undo_item, editor->context, FALSE);
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}
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else
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{
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pika_container_view_select_item (PIKA_CONTAINER_VIEW (editor->view),
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PIKA_VIEWABLE (editor->base_item));
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pika_undo_create_preview (editor->base_item, editor->context, TRUE);
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}
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g_signal_handlers_unblock_by_func (editor->view,
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pika_undo_editor_select_items,
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editor);
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}
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static void
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pika_undo_editor_clear (PikaUndoEditor *editor)
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{
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if (editor->container)
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{
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pika_container_view_set_container (PIKA_CONTAINER_VIEW (editor->view),
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NULL);
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g_clear_object (&editor->container);
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}
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g_clear_object (&editor->base_item);
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}
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static void
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pika_undo_editor_undo_event (PikaImage *image,
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PikaUndoEvent event,
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PikaUndo *undo,
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PikaUndoEditor *editor)
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{
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PikaUndoStack *undo_stack = pika_image_get_undo_stack (image);
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PikaUndo *top_undo_item = pika_undo_stack_peek (undo_stack);
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switch (event)
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{
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case PIKA_UNDO_EVENT_UNDO_PUSHED:
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g_signal_handlers_block_by_func (editor->view,
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pika_undo_editor_select_items,
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editor);
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pika_container_insert (editor->container, PIKA_OBJECT (undo), -1);
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pika_container_view_select_item (PIKA_CONTAINER_VIEW (editor->view),
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PIKA_VIEWABLE (undo));
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pika_undo_create_preview (undo, editor->context, FALSE);
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g_signal_handlers_unblock_by_func (editor->view,
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pika_undo_editor_select_items,
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editor);
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break;
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case PIKA_UNDO_EVENT_UNDO_EXPIRED:
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case PIKA_UNDO_EVENT_REDO_EXPIRED:
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pika_container_remove (editor->container, PIKA_OBJECT (undo));
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break;
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case PIKA_UNDO_EVENT_UNDO:
|
||
|
|
case PIKA_UNDO_EVENT_REDO:
|
||
|
|
g_signal_handlers_block_by_func (editor->view,
|
||
|
|
pika_undo_editor_select_items,
|
||
|
|
editor);
|
||
|
|
|
||
|
|
if (top_undo_item)
|
||
|
|
{
|
||
|
|
pika_container_view_select_item (PIKA_CONTAINER_VIEW (editor->view),
|
||
|
|
PIKA_VIEWABLE (top_undo_item));
|
||
|
|
pika_undo_create_preview (top_undo_item, editor->context, FALSE);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
pika_container_view_select_item (PIKA_CONTAINER_VIEW (editor->view),
|
||
|
|
PIKA_VIEWABLE (editor->base_item));
|
||
|
|
pika_undo_create_preview (editor->base_item, editor->context, TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
g_signal_handlers_unblock_by_func (editor->view,
|
||
|
|
pika_undo_editor_select_items,
|
||
|
|
editor);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PIKA_UNDO_EVENT_UNDO_FREE:
|
||
|
|
if (pika_image_undo_is_enabled (image))
|
||
|
|
pika_undo_editor_clear (editor);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PIKA_UNDO_EVENT_UNDO_FREEZE:
|
||
|
|
pika_undo_editor_clear (editor);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PIKA_UNDO_EVENT_UNDO_THAW:
|
||
|
|
pika_undo_editor_fill (editor);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
pika_undo_editor_select_items (PikaContainerView *view,
|
||
|
|
GList *undos,
|
||
|
|
GList *paths,
|
||
|
|
PikaUndoEditor *editor)
|
||
|
|
{
|
||
|
|
PikaImage *image = PIKA_IMAGE_EDITOR (editor)->image;
|
||
|
|
PikaUndoStack *undo_stack = pika_image_get_undo_stack (image);
|
||
|
|
PikaUndoStack *redo_stack = pika_image_get_redo_stack (image);
|
||
|
|
PikaUndo *top_undo_item;
|
||
|
|
PikaUndo *undo;
|
||
|
|
|
||
|
|
g_return_val_if_fail (g_list_length (undos) < 2, FALSE);
|
||
|
|
|
||
|
|
if (! undos)
|
||
|
|
return TRUE;
|
||
|
|
|
||
|
|
undo = undos->data;
|
||
|
|
|
||
|
|
top_undo_item = pika_undo_stack_peek (undo_stack);
|
||
|
|
|
||
|
|
if (undo == editor->base_item)
|
||
|
|
{
|
||
|
|
/* the base_item was selected, pop all available undo items
|
||
|
|
*/
|
||
|
|
while (top_undo_item != NULL)
|
||
|
|
{
|
||
|
|
if (! pika_image_undo (image))
|
||
|
|
break;
|
||
|
|
|
||
|
|
top_undo_item = pika_undo_stack_peek (undo_stack);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (pika_container_have (undo_stack->undos, PIKA_OBJECT (undo)))
|
||
|
|
{
|
||
|
|
/* the selected item is on the undo stack, pop undos until it
|
||
|
|
* is on top of the undo stack
|
||
|
|
*/
|
||
|
|
while (top_undo_item != undo)
|
||
|
|
{
|
||
|
|
if(! pika_image_undo (image))
|
||
|
|
break;
|
||
|
|
|
||
|
|
top_undo_item = pika_undo_stack_peek (undo_stack);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (pika_container_have (redo_stack->undos, PIKA_OBJECT (undo)))
|
||
|
|
{
|
||
|
|
/* the selected item is on the redo stack, pop redos until it
|
||
|
|
* is on top of the undo stack
|
||
|
|
*/
|
||
|
|
while (top_undo_item != undo)
|
||
|
|
{
|
||
|
|
if (! pika_image_redo (image))
|
||
|
|
break;
|
||
|
|
|
||
|
|
top_undo_item = pika_undo_stack_peek (undo_stack);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pika_image_flush (image);
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
