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gimp/app/widgets/gimpselectiondata.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995-1997 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef G_OS_WIN32
#include <process.h> /* getpid() */
#endif
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpbrush.h"
#include "core/gimpcontainer.h"
#include "core/gimpdatafactory.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "core/gimpimagefile.h"
#include "core/gimpitem.h"
#include "core/gimppalette.h"
#include "core/gimppattern.h"
#include "core/gimptoolinfo.h"
#include "text/gimpfont.h"
#include "gimpselectiondata.h"
#include "gimp-intl.h"
/* #define DEBUG_DND */
#ifdef DEBUG_DND
#define D(stmnt) stmnt
#else
#define D(stmnt)
#endif
/* local function prototypes */
static gchar * gimp_selection_data_get_name (GtkSelectionData *selection);
static GimpObject * gimp_selection_data_get_object (GtkSelectionData *selection,
GimpContainer *container,
GimpObject *additional);
static gchar * gimp_unescape_uri_string (const char *escaped,
int len,
const char *illegal_escaped_characters,
gboolean ascii_must_not_be_escaped);
/* public functions */
void
gimp_selection_data_set_uri_list (GtkSelectionData *selection,
GList *uri_list)
{
GList *list;
gchar *vals = NULL;
g_return_if_fail (selection != NULL);
g_return_if_fail (uri_list != NULL);
for (list = uri_list; list; list = g_list_next (list))
{
if (vals)
{
gchar *tmp = g_strconcat (vals,
list->data,
list->next ? "\n" : NULL,
NULL);
g_free (vals);
vals = tmp;
}
else
{
vals = g_strconcat (list->data,
list->next ? "\n" : NULL,
NULL);
}
}
gtk_selection_data_set (selection, selection->target,
8, (guchar *) vals, strlen (vals) + 1);
g_free (vals);
}
GList *
gimp_selection_data_get_uri_list (GtkSelectionData *selection)
{
GList *crap_list = NULL;
GList *uri_list = NULL;
GList *list;
const gchar *buffer;
g_return_val_if_fail (selection != NULL, NULL);
if ((selection->format != 8) || (selection->length < 1))
{
g_warning ("Received invalid file data!");
return NULL;
}
buffer = (const gchar *) selection->data;
D (g_print ("%s: raw buffer >>%s<<\n", G_STRFUNC, buffer));
{
gchar name_buffer[1024];
while (*buffer && (buffer - (gchar *) selection->data < selection->length))
{
gchar *name = name_buffer;
gint len = 0;
while (len < sizeof (name_buffer) && *buffer && *buffer != '\n')
{
*name++ = *buffer++;
len++;
}
if (len == 0)
break;
if (*(name - 1) == 0xd) /* gmc uses RETURN+NEWLINE as delimiter */
len--;
if (len > 2)
crap_list = g_list_prepend (crap_list, g_strndup (name_buffer, len));
if (*buffer)
buffer++;
}
}
if (! crap_list)
return NULL;
/* do various checks because file drag sources send all kinds of
* arbitrary crap...
*/
for (list = crap_list; list; list = g_list_next (list))
{
const gchar *dnd_crap = list->data;
gchar *filename;
gchar *hostname;
gchar *uri = NULL;
GError *error = NULL;
D (g_print ("%s: trying to convert \"%s\" to an uri.\n",
G_STRFUNC, dnd_crap));
filename = g_filename_from_uri (dnd_crap, &hostname, NULL);
if (filename)
{
/* if we got a correctly encoded "file:" uri...
*
* (for GLib < 2.4.4, this is escaped UTF-8,
* for GLib > 2.4.4, this is escaped local filename encoding)
*/
uri = g_filename_to_uri (filename, hostname, NULL);
g_free (hostname);
g_free (filename);
}
else if (g_file_test (dnd_crap, G_FILE_TEST_EXISTS))
{
/* ...else if we got a valid local filename... */
uri = g_filename_to_uri (dnd_crap, NULL, NULL);
}
else
{
/* ...otherwise do evil things... */
const gchar *start = dnd_crap;
if (! strncmp (dnd_crap, "file://", strlen ("file://")))
{
start += strlen ("file://");
}
else if (! strncmp (dnd_crap, "file:", strlen ("file:")))
{
start += strlen ("file:");
}
if (start != dnd_crap)
{
/* try if we got a "file:" uri in the wrong encoding...
*
* (for GLib < 2.4.4, this is escaped local filename encoding,
* for GLib > 2.4.4, this is escaped UTF-8)
*/
gchar *unescaped_filename;
if (strstr (dnd_crap, "%"))
{
gchar *local_filename;
unescaped_filename = gimp_unescape_uri_string (start, -1,
"/", FALSE);
/* check if we got a drop from an application that
* encodes file: URIs as UTF-8 (apps linked against
* GLib < 2.4.4)
*/
local_filename = g_filename_from_utf8 (unescaped_filename,
-1, NULL, NULL,
NULL);
if (local_filename)
{
g_free (unescaped_filename);
unescaped_filename = local_filename;
}
}
else
{
unescaped_filename = g_strdup (start);
}
uri = g_filename_to_uri (unescaped_filename, NULL, &error);
if (! uri)
{
gchar *escaped_filename = g_strescape (unescaped_filename,
NULL);
g_message (_("The filename '%s' couldn't be converted to a "
"valid URI:\n\n%s"),
escaped_filename,
error->message ?
error->message : _("Invalid UTF-8"));
g_free (escaped_filename);
g_clear_error (&error);
g_free (unescaped_filename);
continue;
}
g_free (unescaped_filename);
}
else
{
/* otherwise try the crap passed anyway, in case it's
* a "http:" or whatever uri a plug-in might handle
*/
uri = g_strdup (dnd_crap);
}
}
uri_list = g_list_prepend (uri_list, uri);
}
g_list_foreach (crap_list, (GFunc) g_free, NULL);
g_list_free (crap_list);
return uri_list;
}
void
gimp_selection_data_set_color (GtkSelectionData *selection,
const GimpRGB *color)
{
guint16 *vals;
guchar r, g, b, a;
g_return_if_fail (selection != NULL);
g_return_if_fail (color != NULL);
vals = g_new (guint16, 4);
gimp_rgba_get_uchar (color, &r, &g, &b, &a);
vals[0] = r + (r << 8);
vals[1] = g + (g << 8);
vals[2] = b + (b << 8);
vals[3] = a + (a << 8);
gtk_selection_data_set (selection, selection->target,
16, (guchar *) vals, 8);
g_free (vals);
}
gboolean
gimp_selection_data_get_color (GtkSelectionData *selection,
GimpRGB *color)
{
guint16 *color_vals;
g_return_val_if_fail (selection != NULL, FALSE);
g_return_val_if_fail (color != NULL, FALSE);
if ((selection->format != 16) || (selection->length != 8))
{
g_warning ("Received invalid color data!");
return FALSE;
}
color_vals = (guint16 *) selection->data;
gimp_rgba_set_uchar (color,
(guchar) (color_vals[0] >> 8),
(guchar) (color_vals[1] >> 8),
(guchar) (color_vals[2] >> 8),
(guchar) (color_vals[3] >> 8));
return TRUE;
}
void
gimp_selection_data_set_stream (GtkSelectionData *selection,
const guchar *stream,
gsize stream_length)
{
g_return_if_fail (selection != NULL);
g_return_if_fail (stream != NULL);
g_return_if_fail (stream_length > 0);
gtk_selection_data_set (selection, selection->target,
8, (guchar *) stream, stream_length);
}
const guchar *
gimp_selection_data_get_stream (GtkSelectionData *selection,
gsize *stream_length)
{
g_return_val_if_fail (selection != NULL, NULL);
g_return_val_if_fail (stream_length != NULL, NULL);
if ((selection->format != 8) || (selection->length < 1))
{
g_warning ("Received invalid data stream!");
return NULL;
}
*stream_length = selection->length;
return (const guchar *) selection->data;
}
void
gimp_selection_data_set_image (GtkSelectionData *selection,
GimpImage *gimage)
{
gchar *str;
g_return_if_fail (selection != NULL);
g_return_if_fail (GIMP_IS_IMAGE (gimage));
str = g_strdup_printf ("%d:%d", getpid (), gimp_image_get_ID (gimage));
gtk_selection_data_set (selection, selection->target,
8, (guchar *) str, strlen (str) + 1);
g_free (str);
}
GimpImage *
gimp_selection_data_get_image (GtkSelectionData *selection,
Gimp *gimp)
{
GimpImage *image = NULL;
gchar *str;
gint pid;
gint ID;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
str = gimp_selection_data_get_name (selection);
if (! str)
return NULL;
if (sscanf (str, "%i:%i", &pid, &ID) == 2 &&
pid == getpid ())
{
image = gimp_image_get_by_ID (gimp, ID);
}
g_free (str);
return image;
}
void
gimp_selection_data_set_component (GtkSelectionData *selection,
GimpImage *gimage,
GimpChannelType channel)
{
gchar *str;
g_return_if_fail (selection != NULL);
g_return_if_fail (GIMP_IS_IMAGE (gimage));
str = g_strdup_printf ("%d:%d:%d", getpid (), gimp_image_get_ID (gimage),
(gint) channel);
gtk_selection_data_set (selection, selection->target,
8, (guchar *) str, strlen (str) + 1);
g_free (str);
}
GimpImage *
gimp_selection_data_get_component (GtkSelectionData *selection,
Gimp *gimp,
GimpChannelType *channel)
{
GimpImage *image = NULL;
gchar *str;
gint pid;
gint ID;
gint ch;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
if (channel)
*channel = 0;
str = gimp_selection_data_get_name (selection);
if (! str)
return NULL;
if (sscanf (str, "%i:%i:%i", &pid, &ID, &ch) == 3 &&
pid == getpid ())
{
image = gimp_image_get_by_ID (gimp, ID);
if (image && channel)
*channel = ch;
}
g_free (str);
return image;
}
void
gimp_selection_data_set_item (GtkSelectionData *selection,
GimpItem *item)
{
gchar *str;
g_return_if_fail (selection != NULL);
g_return_if_fail (GIMP_IS_ITEM (item));
str = g_strdup_printf ("%d:%d", getpid (), gimp_item_get_ID (item));
gtk_selection_data_set (selection, selection->target,
8, (guchar *) str, strlen (str) + 1);
g_free (str);
}
GimpItem *
gimp_selection_data_get_item (GtkSelectionData *selection,
Gimp *gimp)
{
GimpItem *item = NULL;
gchar *str;
gint pid;
gint ID;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
str = gimp_selection_data_get_name (selection);
if (! str)
return NULL;
if (sscanf (str, "%i:%i", &pid, &ID) == 2 &&
pid == getpid ())
{
item = gimp_item_get_by_ID (gimp, ID);
}
g_free (str);
return item;
}
void
gimp_selection_data_set_object (GtkSelectionData *selection,
GimpObject *object)
{
const gchar *name;
g_return_if_fail (selection != NULL);
g_return_if_fail (GIMP_IS_OBJECT (object));
name = gimp_object_get_name (object);
if (name)
{
gchar *str;
str = g_strdup_printf ("%d:%p:%s", getpid (), object, name);
gtk_selection_data_set (selection, selection->target,
8, (guchar *) str, strlen (str) + 1);
g_free (str);
}
}
GimpBrush *
gimp_selection_data_get_brush (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpBrush *)
gimp_selection_data_get_object (selection,
gimp->brush_factory->container,
GIMP_OBJECT (gimp_brush_get_standard ()));
}
GimpPattern *
gimp_selection_data_get_pattern (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpPattern *)
gimp_selection_data_get_object (selection,
gimp->pattern_factory->container,
GIMP_OBJECT (gimp_pattern_get_standard ()));
}
GimpGradient *
gimp_selection_data_get_gradient (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpGradient *)
gimp_selection_data_get_object (selection,
gimp->gradient_factory->container,
GIMP_OBJECT (gimp_gradient_get_standard ()));
}
GimpPalette *
gimp_selection_data_get_palette (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpPalette *)
gimp_selection_data_get_object (selection,
gimp->palette_factory->container,
GIMP_OBJECT (gimp_palette_get_standard ()));
}
GimpFont *
gimp_selection_data_get_font (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpFont *)
gimp_selection_data_get_object (selection,
gimp->fonts,
GIMP_OBJECT (gimp_font_get_standard ()));
}
GimpBuffer *
gimp_selection_data_get_buffer (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpBuffer *)
gimp_selection_data_get_object (selection,
gimp->named_buffers,
GIMP_OBJECT (gimp->global_buffer));
}
GimpImagefile *
gimp_selection_data_get_imagefile (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpImagefile *) gimp_selection_data_get_object (selection,
gimp->documents,
NULL);
}
GimpTemplate *
gimp_selection_data_get_template (GtkSelectionData *selection,
Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
return (GimpTemplate *) gimp_selection_data_get_object (selection,
gimp->templates,
NULL);
}
GimpToolInfo *
gimp_selection_data_get_tool_info (GtkSelectionData *selection,
Gimp *gimp)
{
GimpToolInfo *tool_info;
gchar *name;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (selection != NULL, NULL);
name = gimp_selection_data_get_name (selection);
if (! name)
return NULL;
if (strcmp (name, "gimp-standard-tool") == 0)
tool_info = gimp_tool_info_get_standard (gimp);
else
tool_info = (GimpToolInfo *)
gimp_container_get_child_by_name (gimp->tool_info_list, name);
g_free (name);
return tool_info;
}
/* private functions */
static gchar *
gimp_selection_data_get_name (GtkSelectionData *selection)
{
gchar *name;
if ((selection->format != 8) || (selection->length < 1))
{
g_warning ("Received invalid selection data");
return NULL;
}
name = g_strndup ((const gchar *) selection->data, selection->length);
if (! g_utf8_validate (name, -1, NULL))
{
g_warning ("Received invalid selection data "
"(doesn't validate as UTF-8)!");
g_free (name);
return NULL;
}
g_printerr ("%s: name = '%s'\n", G_STRFUNC, name);
return name;
}
static GimpObject *
gimp_selection_data_get_object (GtkSelectionData *selection,
GimpContainer *container,
GimpObject *additional)
{
GimpObject *object = NULL;
gchar *str;
gint pid;
gpointer object_addr;
gint name_offset = 0;
str = gimp_selection_data_get_name (selection);
if (! str)
return NULL;
if (sscanf (str, "%i:%p:%n", &pid, &object_addr, &name_offset) >= 2 &&
pid == getpid () && name_offset > 0)
{
gchar *name = str + name_offset;
g_printerr ("%s: pid = %d, addr = %p, name = '%s'\n",
G_STRFUNC, pid, object_addr, name);
if (additional &&
strcmp (name, gimp_object_get_name (additional)) == 0 &&
object_addr == (gpointer) additional)
{
object = additional;
}
else
{
object = gimp_container_get_child_by_name (container, name);
if (object && object_addr != (gpointer) object)
object = NULL;
}
}
g_free (str);
return object;
}
/* the next two functions are straight cut'n'paste from glib/glib/gconvert.c,
* except that gimp_unescape_uri_string() does not try to UTF-8 validate
* the unescaped result.
*/
static int
unescape_character (const char *scanner)
{
int first_digit;
int second_digit;
first_digit = g_ascii_xdigit_value (scanner[0]);
if (first_digit < 0)
return -1;
second_digit = g_ascii_xdigit_value (scanner[1]);
if (second_digit < 0)
return -1;
return (first_digit << 4) | second_digit;
}
static gchar *
gimp_unescape_uri_string (const char *escaped,
int len,
const char *illegal_escaped_characters,
gboolean ascii_must_not_be_escaped)
{
const gchar *in, *in_end;
gchar *out, *result;
int c;
if (escaped == NULL)
return NULL;
if (len < 0)
len = strlen (escaped);
result = g_malloc (len + 1);
out = result;
for (in = escaped, in_end = escaped + len; in < in_end; in++)
{
c = *in;
if (c == '%')
{
/* catch partial escape sequences past the end of the substring */
if (in + 3 > in_end)
break;
c = unescape_character (in + 1);
/* catch bad escape sequences and NUL characters */
if (c <= 0)
break;
/* catch escaped ASCII */
if (ascii_must_not_be_escaped && c <= 0x7F)
break;
/* catch other illegal escaped characters */
if (strchr (illegal_escaped_characters, c) != NULL)
break;
in += 2;
}
*out++ = c;
}
g_assert (out - result <= len);
*out = '\0';
if (in != in_end)
{
g_free (result);
return NULL;
}
return result;
}
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