/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
#include "config.h"
#include
#include
#include
#include "libpikabase/pikabase.h"
#include "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pika.h"
#include "core/pikabuffer.h"
#include "core/pikacontext.h"
#include "core/pikaimage.h"
#include "core/pikaimage-new.h"
#include "core/pikaimage-undo.h"
#include "core/pikalayer.h"
#include "core/pikalayermask.h"
#include "core/pikatoolinfo.h"
#include "file/file-open.h"
#include "pikadnd.h"
#include "pikatoolbox.h"
#include "pikatoolbox-dnd.h"
#include "pikawidgets-utils.h"
#include "pika-intl.h"
/* local function prototypes */
static void pika_toolbox_drop_uri_list (GtkWidget *widget,
gint x,
gint y,
GList *uri_list,
gpointer data);
static void pika_toolbox_drop_drawable (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data);
static void pika_toolbox_drop_tool (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data);
static void pika_toolbox_drop_buffer (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data);
static void pika_toolbox_drop_component (GtkWidget *widget,
gint x,
gint y,
PikaImage *image,
PikaChannelType component,
gpointer data);
static void pika_toolbox_drop_pixbuf (GtkWidget *widget,
gint x,
gint y,
GdkPixbuf *pixbuf,
gpointer data);
/* public functions */
void
pika_toolbox_dnd_init (PikaToolbox *toolbox,
GtkWidget *vbox)
{
PikaContext *context = NULL;
g_return_if_fail (PIKA_IS_TOOLBOX (toolbox));
g_return_if_fail (GTK_IS_BOX (vbox));
context = pika_toolbox_get_context (toolbox);
/* Before calling any dnd helper functions, setup the drag
* destination manually since we want to handle all drag events
* manually, otherwise we would not be able to give the drag handler
* a chance to handle drag events
*/
gtk_drag_dest_set (vbox,
0, NULL, 0,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
pika_dnd_viewable_dest_add (vbox,
PIKA_TYPE_LAYER,
pika_toolbox_drop_drawable,
context);
pika_dnd_viewable_dest_add (vbox,
PIKA_TYPE_LAYER_MASK,
pika_toolbox_drop_drawable,
context);
pika_dnd_viewable_dest_add (vbox,
PIKA_TYPE_CHANNEL,
pika_toolbox_drop_drawable,
context);
pika_dnd_viewable_dest_add (vbox,
PIKA_TYPE_TOOL_INFO,
pika_toolbox_drop_tool,
context);
pika_dnd_viewable_dest_add (vbox,
PIKA_TYPE_BUFFER,
pika_toolbox_drop_buffer,
context);
pika_dnd_component_dest_add (vbox,
pika_toolbox_drop_component,
context);
pika_dnd_uri_list_dest_add (vbox,
pika_toolbox_drop_uri_list,
context);
pika_dnd_pixbuf_dest_add (vbox,
pika_toolbox_drop_pixbuf,
context);
}
/* private functions */
static void
pika_toolbox_drop_uri_list (GtkWidget *widget,
gint x,
gint y,
GList *uri_list,
gpointer data)
{
PikaContext *context = PIKA_CONTEXT (data);
GList *list;
if (context->pika->busy)
return;
for (list = uri_list; list; list = g_list_next (list))
{
GFile *file = g_file_new_for_uri (list->data);
PikaPDBStatusType status;
GError *error = NULL;
file_open_with_display (context->pika, context, NULL,
file, FALSE,
G_OBJECT (pika_widget_get_monitor (widget)),
&status, &error);
if (status != PIKA_PDB_CANCEL && status != PIKA_PDB_SUCCESS)
{
/* file_open_image() took care of always having a filled error when
* the status is neither CANCEL nor SUCCESS (and to transform a
* wrongful success without a returned image into an EXECUTION_ERROR).
*
* In some case, we may also have a SUCCESS without an image, when the
* file procedure is a `generic_file_proc` (e.g. for a .gex extension
* file). So we should not rely on having a returned image or not.
* Once again, sanitizing the returned status is handled by
* file_open_image().
*/
pika_message (context->pika, G_OBJECT (widget), PIKA_MESSAGE_ERROR,
_("Opening '%s' failed:\n\n%s"),
pika_file_get_utf8_name (file), error->message);
g_clear_error (&error);
}
g_object_unref (file);
}
}
static void
pika_toolbox_drop_drawable (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data)
{
PikaContext *context = PIKA_CONTEXT (data);
PikaImage *new_image;
if (context->pika->busy)
return;
new_image = pika_image_new_from_drawable (context->pika,
PIKA_DRAWABLE (viewable));
pika_create_display (context->pika, new_image, PIKA_UNIT_PIXEL, 1.0,
G_OBJECT (pika_widget_get_monitor (widget)));
g_object_unref (new_image);
}
static void
pika_toolbox_drop_tool (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data)
{
PikaContext *context = PIKA_CONTEXT (data);
if (context->pika->busy)
return;
pika_context_set_tool (context, PIKA_TOOL_INFO (viewable));
}
static void
pika_toolbox_drop_buffer (GtkWidget *widget,
gint x,
gint y,
PikaViewable *viewable,
gpointer data)
{
PikaContext *context = PIKA_CONTEXT (data);
PikaImage *image;
if (context->pika->busy)
return;
image = pika_image_new_from_buffer (context->pika,
PIKA_BUFFER (viewable));
pika_create_display (image->pika, image, PIKA_UNIT_PIXEL, 1.0,
G_OBJECT (pika_widget_get_monitor (widget)));
g_object_unref (image);
}
static void
pika_toolbox_drop_component (GtkWidget *widget,
gint x,
gint y,
PikaImage *image,
PikaChannelType component,
gpointer data)
{
PikaContext *context = PIKA_CONTEXT (data);
PikaImage *new_image;
if (context->pika->busy)
return;
new_image = pika_image_new_from_component (context->pika,
image, component);
pika_create_display (new_image->pika, new_image, PIKA_UNIT_PIXEL, 1.0,
G_OBJECT (pika_widget_get_monitor (widget)));
g_object_unref (new_image);
}
static void
pika_toolbox_drop_pixbuf (GtkWidget *widget,
gint x,
gint y,
GdkPixbuf *pixbuf,
gpointer data)
{
PikaContext *context = PIKA_CONTEXT (data);
PikaImage *new_image;
if (context->pika->busy)
return;
new_image = pika_image_new_from_pixbuf (context->pika, pixbuf,
_("Dropped Buffer"));
pika_create_display (new_image->pika, new_image, PIKA_UNIT_PIXEL, 1.0,
G_OBJECT (pika_widget_get_monitor (widget)));
g_object_unref (new_image);
}