286 lines
10 KiB
C
286 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 <string.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 "core/pika.h"
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#include "core/pikabuffer.h"
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#include "core/pikacontext.h"
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#include "core/pikaimage.h"
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#include "core/pikaimage-new.h"
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#include "core/pikaimage-undo.h"
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#include "core/pikalayer.h"
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#include "core/pikalayermask.h"
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#include "core/pikatoolinfo.h"
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#include "file/file-open.h"
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#include "pikadnd.h"
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#include "pikatoolbox.h"
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#include "pikatoolbox-dnd.h"
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#include "pikawidgets-utils.h"
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#include "pika-intl.h"
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/* local function prototypes */
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static void pika_toolbox_drop_uri_list (GtkWidget *widget,
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gint x,
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gint y,
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GList *uri_list,
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gpointer data);
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static void pika_toolbox_drop_drawable (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data);
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static void pika_toolbox_drop_tool (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data);
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static void pika_toolbox_drop_buffer (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data);
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static void pika_toolbox_drop_component (GtkWidget *widget,
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gint x,
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gint y,
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PikaImage *image,
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PikaChannelType component,
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gpointer data);
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static void pika_toolbox_drop_pixbuf (GtkWidget *widget,
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gint x,
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gint y,
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GdkPixbuf *pixbuf,
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gpointer data);
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/* public functions */
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void
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pika_toolbox_dnd_init (PikaToolbox *toolbox,
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GtkWidget *vbox)
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{
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PikaContext *context = NULL;
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g_return_if_fail (PIKA_IS_TOOLBOX (toolbox));
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g_return_if_fail (GTK_IS_BOX (vbox));
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context = pika_toolbox_get_context (toolbox);
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/* Before calling any dnd helper functions, setup the drag
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* destination manually since we want to handle all drag events
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* manually, otherwise we would not be able to give the drag handler
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* a chance to handle drag events
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*/
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gtk_drag_dest_set (vbox,
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0, NULL, 0,
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GDK_ACTION_COPY | GDK_ACTION_MOVE);
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pika_dnd_viewable_dest_add (vbox,
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PIKA_TYPE_LAYER,
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pika_toolbox_drop_drawable,
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context);
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pika_dnd_viewable_dest_add (vbox,
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PIKA_TYPE_LAYER_MASK,
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pika_toolbox_drop_drawable,
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context);
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pika_dnd_viewable_dest_add (vbox,
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PIKA_TYPE_CHANNEL,
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pika_toolbox_drop_drawable,
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context);
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pika_dnd_viewable_dest_add (vbox,
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PIKA_TYPE_TOOL_INFO,
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pika_toolbox_drop_tool,
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context);
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pika_dnd_viewable_dest_add (vbox,
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PIKA_TYPE_BUFFER,
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pika_toolbox_drop_buffer,
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context);
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pika_dnd_component_dest_add (vbox,
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pika_toolbox_drop_component,
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context);
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pika_dnd_uri_list_dest_add (vbox,
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pika_toolbox_drop_uri_list,
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context);
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pika_dnd_pixbuf_dest_add (vbox,
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pika_toolbox_drop_pixbuf,
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context);
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}
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/* private functions */
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static void
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pika_toolbox_drop_uri_list (GtkWidget *widget,
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gint x,
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gint y,
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GList *uri_list,
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gpointer data)
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{
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PikaContext *context = PIKA_CONTEXT (data);
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GList *list;
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if (context->pika->busy)
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return;
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for (list = uri_list; list; list = g_list_next (list))
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{
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GFile *file = g_file_new_for_uri (list->data);
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PikaPDBStatusType status;
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GError *error = NULL;
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file_open_with_display (context->pika, context, NULL,
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file, FALSE,
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G_OBJECT (pika_widget_get_monitor (widget)),
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&status, &error);
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if (status != PIKA_PDB_CANCEL && status != PIKA_PDB_SUCCESS)
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{
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/* file_open_image() took care of always having a filled error when
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* the status is neither CANCEL nor SUCCESS (and to transform a
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* wrongful success without a returned image into an EXECUTION_ERROR).
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*
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* In some case, we may also have a SUCCESS without an image, when the
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* file procedure is a `generic_file_proc` (e.g. for a .gex extension
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* file). So we should not rely on having a returned image or not.
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* Once again, sanitizing the returned status is handled by
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* file_open_image().
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*/
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pika_message (context->pika, G_OBJECT (widget), PIKA_MESSAGE_ERROR,
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_("Opening '%s' failed:\n\n%s"),
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pika_file_get_utf8_name (file), error->message);
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g_clear_error (&error);
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}
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g_object_unref (file);
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}
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}
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static void
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pika_toolbox_drop_drawable (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data)
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{
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PikaContext *context = PIKA_CONTEXT (data);
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PikaImage *new_image;
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if (context->pika->busy)
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return;
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new_image = pika_image_new_from_drawable (context->pika,
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PIKA_DRAWABLE (viewable));
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pika_create_display (context->pika, new_image, PIKA_UNIT_PIXEL, 1.0,
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G_OBJECT (pika_widget_get_monitor (widget)));
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g_object_unref (new_image);
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}
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static void
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pika_toolbox_drop_tool (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data)
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{
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PikaContext *context = PIKA_CONTEXT (data);
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if (context->pika->busy)
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return;
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pika_context_set_tool (context, PIKA_TOOL_INFO (viewable));
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}
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static void
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pika_toolbox_drop_buffer (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data)
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{
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PikaContext *context = PIKA_CONTEXT (data);
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PikaImage *image;
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if (context->pika->busy)
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return;
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image = pika_image_new_from_buffer (context->pika,
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PIKA_BUFFER (viewable));
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pika_create_display (image->pika, image, PIKA_UNIT_PIXEL, 1.0,
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G_OBJECT (pika_widget_get_monitor (widget)));
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g_object_unref (image);
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}
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static void
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pika_toolbox_drop_component (GtkWidget *widget,
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gint x,
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gint y,
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PikaImage *image,
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PikaChannelType component,
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gpointer data)
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{
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PikaContext *context = PIKA_CONTEXT (data);
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PikaImage *new_image;
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if (context->pika->busy)
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return;
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new_image = pika_image_new_from_component (context->pika,
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image, component);
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pika_create_display (new_image->pika, new_image, PIKA_UNIT_PIXEL, 1.0,
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G_OBJECT (pika_widget_get_monitor (widget)));
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g_object_unref (new_image);
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}
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static void
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pika_toolbox_drop_pixbuf (GtkWidget *widget,
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gint x,
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gint y,
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GdkPixbuf *pixbuf,
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gpointer data)
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{
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PikaContext *context = PIKA_CONTEXT (data);
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PikaImage *new_image;
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if (context->pika->busy)
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return;
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new_image = pika_image_new_from_pixbuf (context->pika, pixbuf,
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_("Dropped Buffer"));
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pika_create_display (new_image->pika, new_image, PIKA_UNIT_PIXEL, 1.0,
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G_OBJECT (pika_widget_get_monitor (widget)));
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g_object_unref (new_image);
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}
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