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gimp/app/display/gimpdisplayshell-dnd.c

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/* GIMP - The GNU Image Manipulation Program
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "display-types.h"
#include "core/gimp.h"
#include "core/gimp-edit.h"
#include "core/gimpbuffer.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpdrawable-bucket-fill.h"
#include "core/gimpimage.h"
#include "core/gimpimage-colormap.h"
#include "core/gimpimage-merge.h"
#include "core/gimpimage-undo.h"
#include "core/gimplayer.h"
#include "core/gimplayermask.h"
#include "core/gimppattern.h"
#include "core/gimpprogress.h"
#include "file/file-open.h"
#include "file/file-utils.h"
#include "text/gimptext.h"
#include "text/gimptextlayer.h"
#include "vectors/gimpvectors.h"
#include "vectors/gimpvectors-import.h"
#include "widgets/gimpdnd.h"
#include "gimpdisplay.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-dnd.h"
#include "gimpdisplayshell-transform.h"
#include "gimp-log.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_display_shell_drop_drawable (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data);
static void gimp_display_shell_drop_vectors (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data);
static void gimp_display_shell_drop_svg (GtkWidget *widget,
gint x,
gint y,
const guchar *svg_data,
gsize svg_data_length,
gpointer data);
static void gimp_display_shell_drop_pattern (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data);
static void gimp_display_shell_drop_color (GtkWidget *widget,
gint x,
gint y,
const GimpRGB *color,
gpointer data);
static void gimp_display_shell_drop_buffer (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data);
static void gimp_display_shell_drop_uri_list (GtkWidget *widget,
gint x,
gint y,
GList *uri_list,
gpointer data);
static void gimp_display_shell_drop_component (GtkWidget *widget,
gint x,
gint y,
GimpImage *image,
GimpChannelType component,
gpointer data);
static void gimp_display_shell_drop_pixbuf (GtkWidget *widget,
gint x,
gint y,
GdkPixbuf *pixbuf,
gpointer data);
/* public functions */
void
gimp_display_shell_dnd_init (GimpDisplayShell *shell)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gimp_dnd_uri_list_dest_add (shell->canvas,
gimp_display_shell_drop_uri_list,
shell);
gimp_dnd_viewable_dest_add (shell->canvas, GIMP_TYPE_LAYER,
gimp_display_shell_drop_drawable,
shell);
gimp_dnd_viewable_dest_add (shell->canvas, GIMP_TYPE_LAYER_MASK,
gimp_display_shell_drop_drawable,
shell);
gimp_dnd_viewable_dest_add (shell->canvas, GIMP_TYPE_CHANNEL,
gimp_display_shell_drop_drawable,
shell);
gimp_dnd_viewable_dest_add (shell->canvas, GIMP_TYPE_VECTORS,
gimp_display_shell_drop_vectors,
shell);
gimp_dnd_viewable_dest_add (shell->canvas, GIMP_TYPE_PATTERN,
gimp_display_shell_drop_pattern,
shell);
gimp_dnd_viewable_dest_add (shell->canvas, GIMP_TYPE_BUFFER,
gimp_display_shell_drop_buffer,
shell);
gimp_dnd_color_dest_add (shell->canvas,
gimp_display_shell_drop_color,
shell);
gimp_dnd_svg_dest_add (shell->canvas,
gimp_display_shell_drop_svg,
shell);
gimp_dnd_component_dest_add (shell->canvas,
gimp_display_shell_drop_component,
shell);
gimp_dnd_pixbuf_dest_add (shell->canvas,
gimp_display_shell_drop_pixbuf,
shell);
}
/* private functions */
/*
* Position the dropped item in the middle of the viewport.
*/
static void
gimp_display_shell_dnd_position_item (GimpDisplayShell *shell,
GimpItem *item)
{
gint x, y;
gint width, height;
gint off_x, off_y;
gimp_display_shell_untransform_viewport (shell, &x, &y, &width, &height);
gimp_item_get_offset (item, &off_x, &off_y);
off_x = x + (width - gimp_item_get_width (item)) / 2 - off_x;
off_y = y + (height - gimp_item_get_height (item)) / 2 - off_y;
gimp_item_translate (item, off_x, off_y, FALSE);
}
static void
gimp_display_shell_dnd_flush (GimpDisplayShell *shell,
GimpImage *image)
{
gtk_window_present (GTK_WINDOW (shell));
gimp_image_flush (image);
gimp_context_set_display (gimp_get_user_context (shell->display->gimp),
shell->display);
}
static void
gimp_display_shell_drop_drawable (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *image = shell->display->image;
GType new_type;
GimpItem *new_item;
gboolean new_image = FALSE;
GIMP_LOG (DND, NULL);
if (shell->display->gimp->busy)
return;
if (! image)
{
GimpImage *src_image = gimp_item_get_image (GIMP_ITEM (viewable));
GimpDrawable *drawable = GIMP_DRAWABLE (viewable);
GimpImageBaseType type;
gdouble xres;
gdouble yres;
type = GIMP_IMAGE_TYPE_BASE_TYPE (gimp_drawable_type (drawable));
image = gimp_create_image (shell->display->gimp,
gimp_item_get_width (GIMP_ITEM (viewable)),
gimp_item_get_height (GIMP_ITEM (viewable)),
type, TRUE);
gimp_image_undo_disable (image);
if (type == GIMP_INDEXED)
gimp_image_set_colormap (image,
gimp_image_get_colormap (src_image),
gimp_image_get_colormap_size (src_image),
FALSE);
gimp_image_get_resolution (src_image, &xres, &yres);
gimp_image_set_resolution (image, xres, yres);
gimp_image_set_unit (image, gimp_image_get_unit (src_image));
gimp_create_display (image->gimp, image, GIMP_UNIT_PIXEL, 1.0);
g_object_unref (image);
new_image = TRUE;
}
if (GIMP_IS_LAYER (viewable))
new_type = G_TYPE_FROM_INSTANCE (viewable);
else
new_type = GIMP_TYPE_LAYER;
new_item = gimp_item_convert (GIMP_ITEM (viewable), image, new_type);
if (new_item)
{
GimpLayer *new_layer = GIMP_LAYER (new_item);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE,
_("Drop New Layer"));
if (! new_image)
gimp_display_shell_dnd_position_item (shell, new_item);
gimp_item_set_visible (new_item, TRUE, FALSE);
gimp_item_set_linked (new_item, FALSE, FALSE);
gimp_image_add_layer (image, new_layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_undo_group_end (image);
gimp_display_shell_dnd_flush (shell, image);
}
if (new_image)
gimp_image_undo_enable (image);
}
static void
gimp_display_shell_drop_vectors (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *image = shell->display->image;
GimpItem *new_item;
GIMP_LOG (DND, NULL);
if (shell->display->gimp->busy)
return;
if (! image)
return;
new_item = gimp_item_convert (GIMP_ITEM (viewable),
image, G_TYPE_FROM_INSTANCE (viewable));
if (new_item)
{
GimpVectors *new_vectors = GIMP_VECTORS (new_item);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE,
_("Drop New Path"));
gimp_image_add_vectors (image, new_vectors,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_undo_group_end (image);
gimp_display_shell_dnd_flush (shell, image);
}
}
static void
gimp_display_shell_drop_svg (GtkWidget *widget,
gint x,
gint y,
const guchar *svg_data,
gsize svg_data_len,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *image = shell->display->image;
GError *error = NULL;
GIMP_LOG (DND, NULL);
if (shell->display->gimp->busy)
return;
if (! image)
return;
if (! gimp_vectors_import_buffer (image,
(const gchar *) svg_data, svg_data_len,
TRUE, TRUE,
GIMP_IMAGE_ACTIVE_PARENT, -1,
NULL, &error))
{
gimp_message_literal (shell->display->gimp, G_OBJECT (shell->display),
GIMP_MESSAGE_ERROR,
error->message);
g_clear_error (&error);
}
else
{
gimp_display_shell_dnd_flush (shell, image);
}
}
static void
gimp_display_shell_dnd_bucket_fill (GimpDisplayShell *shell,
GimpBucketFillMode fill_mode,
const GimpRGB *color,
GimpPattern *pattern)
{
GimpImage *image = shell->display->image;
GimpDrawable *drawable;
if (shell->display->gimp->busy)
return;
if (! image)
return;
drawable = gimp_image_get_active_drawable (image);
if (! drawable)
return;
if (gimp_item_get_lock_content (GIMP_ITEM (drawable)))
{
gimp_message_literal (shell->display->gimp, G_OBJECT (shell->display),
GIMP_MESSAGE_ERROR,
_("The active layer's pixels are locked."));
return;
}
/* FIXME: there should be a virtual method for this that the
* GimpTextLayer can override.
*/
if (color && gimp_drawable_is_text_layer (drawable))
{
gimp_text_layer_set (GIMP_TEXT_LAYER (drawable), NULL,
"color", color,
NULL);
}
else
{
gimp_drawable_bucket_fill_full (drawable,
fill_mode,
GIMP_NORMAL_MODE, GIMP_OPACITY_OPAQUE,
FALSE, /* no seed fill */
FALSE, /* don't fill transp */
GIMP_SELECT_CRITERION_COMPOSITE,
0.0, FALSE, /* fill params */
0.0, 0.0, /* ignored */
color, pattern);
}
gimp_display_shell_dnd_flush (shell, image);
}
static void
gimp_display_shell_drop_pattern (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
GIMP_LOG (DND, NULL);
if (GIMP_IS_PATTERN (viewable))
gimp_display_shell_dnd_bucket_fill (GIMP_DISPLAY_SHELL (data),
GIMP_PATTERN_BUCKET_FILL,
NULL, GIMP_PATTERN (viewable));
}
static void
gimp_display_shell_drop_color (GtkWidget *widget,
gint x,
gint y,
const GimpRGB *color,
gpointer data)
{
GIMP_LOG (DND, NULL);
gimp_display_shell_dnd_bucket_fill (GIMP_DISPLAY_SHELL (data),
GIMP_FG_BUCKET_FILL,
color, NULL);
}
static void
gimp_display_shell_drop_buffer (GtkWidget *widget,
gint drop_x,
gint drop_y,
GimpViewable *viewable,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *image = shell->display->image;
GimpDrawable *drawable;
GimpBuffer *buffer;
gint x, y, width, height;
GIMP_LOG (DND, NULL);
if (shell->display->gimp->busy)
return;
if (! image)
return;
drawable = gimp_image_get_active_drawable (image);
if (drawable && gimp_item_get_lock_content (GIMP_ITEM (drawable)))
{
gimp_message_literal (shell->display->gimp, G_OBJECT (shell->display),
GIMP_MESSAGE_ERROR,
_("The active layer's pixels are locked."));
return;
}
buffer = GIMP_BUFFER (viewable);
gimp_display_shell_untransform_viewport (shell, &x, &y, &width, &height);
/* FIXME: popup a menu for selecting "Paste Into" */
gimp_edit_paste (image, drawable, buffer, FALSE,
x, y, width, height);
gimp_display_shell_dnd_flush (shell, image);
}
static void
gimp_display_shell_drop_uri_list (GtkWidget *widget,
gint x,
gint y,
GList *uri_list,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *image = shell->display->image;
GimpContext *context = gimp_get_user_context (shell->display->gimp);
GList *list;
gboolean open_as_layers;
GIMP_LOG (DND, NULL);
open_as_layers = (shell->display->image != NULL);
for (list = uri_list; list; list = g_list_next (list))
{
const gchar *uri = list->data;
GimpPDBStatusType status;
GError *error = NULL;
gboolean warn = FALSE;
if (open_as_layers)
{
GList *new_layers;
new_layers = file_open_layers (shell->display->gimp, context,
GIMP_PROGRESS (shell->display),
image, FALSE,
uri, GIMP_RUN_INTERACTIVE, NULL,
&status, &error);
if (new_layers)
{
gint x, y;
gint width, height;
gimp_display_shell_untransform_viewport (shell, &x, &y,
&width, &height);
gimp_image_add_layers (image, new_layers,
GIMP_IMAGE_ACTIVE_PARENT, -1,
x, y, width, height,
_("Drop layers"));
g_list_free (new_layers);
}
else if (status != GIMP_PDB_CANCEL)
{
warn = TRUE;
}
}
else if (shell->display->image)
{
/* open any subsequent images in a new display */
GimpImage *new_image;
new_image = file_open_with_display (shell->display->gimp, context,
NULL,
uri, FALSE,
&status, &error);
if (! new_image && status != GIMP_PDB_CANCEL)
warn = TRUE;
}
else
{
/* open the first image in the empty display */
image = file_open_with_display (shell->display->gimp, context,
GIMP_PROGRESS (shell->display),
uri, FALSE,
&status, &error);
if (! image && status != GIMP_PDB_CANCEL)
warn = TRUE;
}
if (warn)
{
gchar *filename = file_utils_uri_display_name (uri);
gimp_message (shell->display->gimp, G_OBJECT (shell->display),
GIMP_MESSAGE_ERROR,
_("Opening '%s' failed:\n\n%s"),
filename, error->message);
g_clear_error (&error);
g_free (filename);
}
}
if (image)
gimp_display_shell_dnd_flush (shell, image);
}
static void
gimp_display_shell_drop_component (GtkWidget *widget,
gint x,
gint y,
GimpImage *image,
GimpChannelType component,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *dest_image = shell->display->image;
GimpChannel *channel;
GimpItem *new_item;
const gchar *desc;
GIMP_LOG (DND, NULL);
if (shell->display->gimp->busy)
return;
if (! dest_image)
return;
channel = gimp_channel_new_from_component (image, component, NULL, NULL);
new_item = gimp_item_convert (GIMP_ITEM (channel),
dest_image, GIMP_TYPE_LAYER);
g_object_unref (channel);
if (new_item)
{
GimpLayer *new_layer = GIMP_LAYER (new_item);
gimp_enum_get_value (GIMP_TYPE_CHANNEL_TYPE, component,
NULL, NULL, &desc, NULL);
gimp_object_take_name (GIMP_OBJECT (new_layer),
g_strdup_printf (_("%s Channel Copy"), desc));
gimp_image_undo_group_start (dest_image, GIMP_UNDO_GROUP_EDIT_PASTE,
_("Drop New Layer"));
gimp_display_shell_dnd_position_item (shell, new_item);
gimp_image_add_layer (dest_image, new_layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_undo_group_end (dest_image);
gimp_display_shell_dnd_flush (shell, dest_image);
}
}
static void
gimp_display_shell_drop_pixbuf (GtkWidget *widget,
gint x,
gint y,
GdkPixbuf *pixbuf,
gpointer data)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (data);
GimpImage *image = shell->display->image;
GimpLayer *new_layer;
GimpImageType image_type;
gboolean new_image = FALSE;
GIMP_LOG (DND, NULL);
if (shell->display->gimp->busy)
return;
switch (gdk_pixbuf_get_n_channels (pixbuf))
{
case 1: image_type = GIMP_GRAY_IMAGE; break;
case 2: image_type = GIMP_GRAYA_IMAGE; break;
case 3: image_type = GIMP_RGB_IMAGE; break;
case 4: image_type = GIMP_RGBA_IMAGE; break;
break;
default:
g_return_if_reached ();
break;
}
if (! image)
{
image = gimp_create_image (shell->display->gimp,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
GIMP_IMAGE_TYPE_BASE_TYPE (image_type),
FALSE);
gimp_create_display (image->gimp, image, GIMP_UNIT_PIXEL, 1.0);
g_object_unref (image);
gimp_image_undo_disable (image);
new_image = TRUE;
}
new_layer =
gimp_layer_new_from_pixbuf (pixbuf, image, image_type,
_("Dropped Buffer"),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (new_layer)
{
GimpItem *new_item = GIMP_ITEM (new_layer);
new_item = GIMP_ITEM (new_layer);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE,
_("Drop New Layer"));
if (! new_image)
gimp_display_shell_dnd_position_item (shell, new_item);
gimp_image_add_layer (image, new_layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_undo_group_end (image);
gimp_display_shell_dnd_flush (shell, image);
}
if (new_image)
gimp_image_undo_enable (image);
}
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