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gtk/gdk/win32/gdkselection-win32.c
Tor Lillqvist d46d791df0 Do return the correct owner for CLIPBOARD (i.e., the owner of the Windows 
2005-09-20  Tor Lillqvist  <tml@novell.com>

	* gdk/win32/gdkselection-win32.c
	(gdk_selection_owner_get_for_display): Do return the correct owner
	for CLIPBOARD (i.e., the owner of the Windows Clipboard, if it is
	a window GDK knows about). The reason to return NULL seems to have
	gone when in the fix for bug #163702 the artificial
	GDK_SELECTION_CLEAR event generation was removed from
	gdk_selection_send_notify_for_display(). Fixes bug #316552.
2005-09-20 07:59:19 +00:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998-2002 Tor Lillqvist
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include <string.h>
#include <stdlib.h>
#include "gdkproperty.h"
#include "gdkselection.h"
#include "gdkdisplay.h"
#include "gdkprivate-win32.h"
/* We emulate the GDK_SELECTION window properties of windows (as used
* in the X11 backend) by using a hash table from GdkWindows to
* GdkSelProp structs.
*/
typedef struct {
guchar *data;
gsize length;
gint format;
GdkAtom type;
} GdkSelProp;
static GHashTable *sel_prop_table = NULL;
static GdkSelProp *dropfiles_prop = NULL;
/* We store the owner of each selection in this table. Obviously, this only
* is valid intra-app, and in fact it is necessary for the intra-app DND to work.
*/
static GHashTable *sel_owner_table = NULL;
void
_gdk_win32_selection_init (void)
{
sel_prop_table = g_hash_table_new (NULL, NULL);
sel_owner_table = g_hash_table_new (NULL, NULL);
_format_atom_table = g_hash_table_new (NULL, NULL);
}
/* The specifications for COMPOUND_TEXT and STRING specify that C0 and
* C1 are not allowed except for \n and \t, however the X conversions
* routines for COMPOUND_TEXT only enforce this in one direction,
* causing cut-and-paste of \r and \r\n separated text to fail.
* This routine strips out all non-allowed C0 and C1 characters
* from the input string and also canonicalizes \r, and \r\n to \n
*/
static gchar *
sanitize_utf8 (const gchar *src,
gint length)
{
GString *result = g_string_sized_new (length + 1);
const gchar *p = src;
const gchar *endp = src + length;
while (p < endp)
{
if (*p == '\r')
{
p++;
if (*p == '\n')
p++;
g_string_append_c (result, '\n');
}
else
{
gunichar ch = g_utf8_get_char (p);
char buf[7];
gint buflen;
if (!((ch < 0x20 && ch != '\t' && ch != '\n') || (ch >= 0x7f && ch < 0xa0)))
{
buflen = g_unichar_to_utf8 (ch, buf);
g_string_append_len (result, buf, buflen);
}
p = g_utf8_next_char (p);
}
}
g_string_append_c (result, '\0');
return g_string_free (result, FALSE);
}
static gchar *
_gdk_utf8_to_string_target_internal (const gchar *str,
gint length)
{
GError *error = NULL;
gchar *tmp_str = sanitize_utf8 (str, length);
gchar *result = g_convert_with_fallback (tmp_str, -1,
"ISO-8859-1", "UTF-8",
NULL, NULL, NULL, &error);
if (!result)
{
g_warning ("Error converting from UTF-8 to STRING: %s",
error->message);
g_error_free (error);
}
g_free (tmp_str);
return result;
}
static void
_gdk_selection_property_store (GdkWindow *owner,
GdkAtom type,
gint format,
guchar *data,
gint length)
{
GdkSelProp *prop;
GSList *prop_list;
prop = g_new (GdkSelProp, 1);
if (type == GDK_TARGET_STRING)
{
/* We know that data is UTF-8 */
prop->data = _gdk_utf8_to_string_target_internal (data, length);
g_free (data);
if (!prop->data)
{
g_free (prop);
return;
}
else
prop->length = strlen (prop->data) + 1;
}
else
{
prop->data = data;
prop->length = length;
}
prop->format = format;
prop->type = type;
prop_list = g_hash_table_lookup (sel_prop_table, GDK_WINDOW_HWND (owner));
prop_list = g_slist_append (prop_list, prop);
g_hash_table_insert (sel_prop_table, GDK_WINDOW_HWND (owner), prop_list);
}
void
_gdk_dropfiles_store (gchar *data)
{
if (data != NULL)
{
g_assert (dropfiles_prop == NULL);
dropfiles_prop = g_new (GdkSelProp, 1);
dropfiles_prop->data = data;
dropfiles_prop->length = strlen (data) + 1;
dropfiles_prop->format = 8;
dropfiles_prop->type = _text_uri_list;
}
else
{
if (dropfiles_prop != NULL)
{
g_free (dropfiles_prop->data);
g_free (dropfiles_prop);
}
dropfiles_prop = NULL;
}
}
gboolean
gdk_selection_owner_set_for_display (GdkDisplay *display,
GdkWindow *owner,
GdkAtom selection,
guint32 time,
gboolean send_event)
{
HWND hwnd;
GdkEvent tmp_event;
gchar *sel_name;
g_return_val_if_fail (display == _gdk_display, FALSE);
g_return_val_if_fail (selection != GDK_NONE, FALSE);
GDK_NOTE (DND,
(sel_name = gdk_atom_name (selection),
g_print ("gdk_selection_owner_set: %p %#x (%s)\n",
(owner ? GDK_WINDOW_HWND (owner) : NULL),
(guint) selection, sel_name),
g_free (sel_name)));
if (selection != GDK_SELECTION_CLIPBOARD)
{
if (owner != NULL)
g_hash_table_insert (sel_owner_table, selection, GDK_WINDOW_HWND (owner));
else
g_hash_table_remove (sel_owner_table, selection);
return TRUE;
}
/* Rest of this function handles the CLIPBOARD selection */
if (owner != NULL)
{
if (GDK_WINDOW_DESTROYED (owner))
return FALSE;
hwnd = GDK_WINDOW_HWND (owner);
}
else
hwnd = NULL;
if (!API_CALL (OpenClipboard, (hwnd)))
return FALSE;
_ignore_destroy_clipboard = TRUE;
if (!API_CALL (EmptyClipboard, ()))
{
_ignore_destroy_clipboard = FALSE;
API_CALL (CloseClipboard, ());
return FALSE;
}
_ignore_destroy_clipboard = FALSE;
if (!API_CALL (CloseClipboard, ()))
return FALSE;
if (owner != NULL)
{
/* Send ourselves a selection request message so that
* gdk_property_change will be called to store the clipboard
* data.
*/
GDK_NOTE (DND, g_print ("... sending GDK_SELECTION_REQUEST to ourselves\n"));
tmp_event.selection.type = GDK_SELECTION_REQUEST;
tmp_event.selection.window = owner;
tmp_event.selection.send_event = FALSE;
tmp_event.selection.selection = selection;
tmp_event.selection.target = _utf8_string;
tmp_event.selection.property = _gdk_selection_property;
tmp_event.selection.requestor = (guint32) hwnd;
tmp_event.selection.time = time;
gdk_event_put (&tmp_event);
}
return TRUE;
}
GdkWindow*
gdk_selection_owner_get_for_display (GdkDisplay *display,
GdkAtom selection)
{
GdkWindow *window;
gchar *sel_name;
g_return_val_if_fail (display == _gdk_display, NULL);
g_return_val_if_fail (selection != GDK_NONE, NULL);
if (selection == GDK_SELECTION_CLIPBOARD)
{
HWND owner = GetClipboardOwner ();
if (owner == NULL)
return NULL;
return gdk_win32_handle_table_lookup ((GdkNativeWindow) owner);
}
window = gdk_window_lookup ((GdkNativeWindow) g_hash_table_lookup (sel_owner_table, selection));
GDK_NOTE (DND,
(sel_name = gdk_atom_name (selection),
g_print ("gdk_selection_owner_get: %#x (%s) = %p\n",
(guint) selection, sel_name,
(window ? GDK_WINDOW_HWND (window) : NULL)),
g_free (sel_name)));
return window;
}
static void
generate_selection_notify (GdkWindow *requestor,
GdkAtom selection,
GdkAtom target,
GdkAtom property,
guint32 time)
{
GdkEvent tmp_event;
tmp_event.selection.type = GDK_SELECTION_NOTIFY;
tmp_event.selection.window = requestor;
tmp_event.selection.send_event = FALSE;
tmp_event.selection.selection = selection;
tmp_event.selection.target = target;
tmp_event.selection.property = property;
tmp_event.selection.requestor = 0;
tmp_event.selection.time = time;
gdk_event_put (&tmp_event);
}
void
gdk_selection_convert (GdkWindow *requestor,
GdkAtom selection,
GdkAtom target,
guint32 time)
{
HGLOBAL hdata;
GdkAtom property = _gdk_selection_property;
gchar *sel_name, *tgt_name;
GError *error = NULL;
g_return_if_fail (selection != GDK_NONE);
g_return_if_fail (requestor != NULL);
if (GDK_WINDOW_DESTROYED (requestor))
return;
GDK_NOTE (DND,
(sel_name = gdk_atom_name (selection),
tgt_name = gdk_atom_name (target),
g_print ("gdk_selection_convert: %p %#x (%s) %#x (%s)\n",
GDK_WINDOW_HWND (requestor),
(guint) selection, sel_name,
(guint) target, tgt_name),
g_free (sel_name),
g_free (tgt_name)));
if (selection == GDK_SELECTION_CLIPBOARD && target == _targets)
{
gint formats_cnt, i, fmt;
GdkAtom *data;
gboolean has_bmp = FALSE;
/* He wants to know what formats are on the clipboard. If there
* is some kind of text, tell him so.
*/
if (!API_CALL (OpenClipboard, (GDK_WINDOW_HWND (requestor))))
return;
formats_cnt = CountClipboardFormats ();
data = g_new (GdkAtom, formats_cnt + 2);
i = 0;
if (IsClipboardFormatAvailable (CF_UNICODETEXT) ||
IsClipboardFormatAvailable (_cf_utf8_string) ||
IsClipboardFormatAvailable (CF_TEXT))
{
data[i++] = _utf8_string;
}
if (formats_cnt > 0)
{
/* If there is anything else in the clipboard, enum it all
* although we don't offer special conversion services.
*/
for (fmt = 0; 0 != (fmt = EnumClipboardFormats (fmt)); )
{
gchar sFormat[80];
if (GetClipboardFormatName (fmt, sFormat, 80) > 0 &&
strcmp (sFormat, "UTF8_STRING"))
{
GdkAtom atom;
if (!has_bmp &&
(!strcmp (sFormat, "image/bmp") ||
!strcmp (sFormat, "image/x-bmp") ||
!strcmp (sFormat, "image/x-MS-bmp")))
has_bmp = TRUE;
atom = gdk_atom_intern (sFormat, FALSE);
data[i++] = atom;
}
}
}
if (!has_bmp && (IsClipboardFormatAvailable (CF_BITMAP) ||
IsClipboardFormatAvailable (CF_DIB)))
data[i++] = _image_bmp;
if (i > 0)
_gdk_selection_property_store (requestor, GDK_SELECTION_TYPE_ATOM,
32, (guchar *) data, i * sizeof (GdkAtom));
else
property = GDK_NONE;
API_CALL (CloseClipboard, ());
}
else if (selection == GDK_SELECTION_CLIPBOARD &&
(target == GDK_TARGET_STRING ||
target == _utf8_string))
{
/* Converting the CLIPBOARD selection means he wants the
* contents of the clipboard. Get the clipboard data, and store
* it for later.
*/
if (!API_CALL (OpenClipboard, (GDK_WINDOW_HWND (requestor))))
return;
/* Try various formats. First the simplest, CF_UNICODETEXT. */
if (G_WIN32_IS_NT_BASED () && (hdata = GetClipboardData (CF_UNICODETEXT)) != NULL)
{
wchar_t *ptr, *wcs, *p, *q;
guchar *data;
glong length, wclen;
if ((ptr = GlobalLock (hdata)) != NULL)
{
length = GlobalSize (hdata);
GDK_NOTE (DND, g_print ("... CF_UNICODETEXT: %ld bytes\n",
length));
/* Strip out \r */
wcs = g_new (wchar_t, length / 2 + 1);
p = ptr;
q = wcs;
wclen = 0;
while (p < ptr + length / 2)
{
if (*p != '\r')
{
*q++ = *p;
wclen++;
}
p++;
}
data = g_utf16_to_utf8 (wcs, wclen, NULL, NULL, &error);
g_free (wcs);
if (!data)
{
g_error_free (error);
}
else
_gdk_selection_property_store (requestor, target, 8,
data, strlen (data) + 1);
GlobalUnlock (hdata);
}
}
else if ((hdata = GetClipboardData (_cf_utf8_string)) != NULL)
{
/* UTF8_STRING is a format we store ourselves when necessary */
guchar *ptr;
gint length;
if ((ptr = GlobalLock (hdata)) != NULL)
{
length = GlobalSize (hdata);
GDK_NOTE (DND, g_print ("... UTF8_STRING: %d bytes: %.10s\n",
length, ptr));
_gdk_selection_property_store (requestor, target, 8,
g_memdup (ptr, length), length);
GlobalUnlock (hdata);
}
}
else if ((hdata = GetClipboardData (CF_TEXT)) != NULL)
{
/* We must always assume the data can contain non-ASCII
* in either the current code page, or if there is CF_LOCALE
* data, in that locale's default code page.
*/
HGLOBAL hlcid;
UINT cp = CP_ACP;
wchar_t *wcs, *wcs2, *p, *q;
guchar *ptr, *data;
glong length, wclen, wclen2;
if ((ptr = GlobalLock (hdata)) != NULL)
{
length = GlobalSize (hdata);
GDK_NOTE (DND, g_print ("... CF_TEXT: %ld bytes: %.10s\n",
length, ptr));
if ((hlcid = GetClipboardData (CF_LOCALE)) != NULL)
{
gchar buf[10];
LCID *lcidptr = GlobalLock (hlcid);
if (GetLocaleInfo (*lcidptr, LOCALE_IDEFAULTANSICODEPAGE,
buf, sizeof (buf)))
{
cp = atoi (buf);
GDK_NOTE (DND, g_print ("... CF_LOCALE: %#lx cp:%d\n",
*lcidptr, cp));
}
GlobalUnlock (hlcid);
}
wcs = g_new (wchar_t, length + 1);
wclen = MultiByteToWideChar (cp, 0, ptr, length,
wcs, length + 1);
/* Strip out \r */
wcs2 = g_new (wchar_t, wclen);
p = wcs;
q = wcs2;
wclen2 = 0;
while (p < wcs + wclen)
{
if (*p != '\r')
{
*q++ = *p;
wclen2++;
}
p++;
}
g_free (wcs);
data = g_utf16_to_utf8 (wcs2, wclen2, NULL, &length, &error);
g_free (wcs2);
if (!data)
g_error_free (error);
else
_gdk_selection_property_store (requestor, target, 8,
data, length + 1);
GlobalUnlock (hdata);
}
}
else
property = GDK_NONE;
API_CALL (CloseClipboard, ());
}
else if (selection == GDK_SELECTION_CLIPBOARD &&
target == _image_bmp)
{
guchar *data;
if (!API_CALL (OpenClipboard, (GDK_WINDOW_HWND (requestor))))
return;
if ((hdata = GetClipboardData (RegisterClipboardFormat ("image/bmp"))) != NULL)
{
/* "image/bmp" is the first choice. */
guchar *ptr;
if ((ptr = GlobalLock (hdata)) != NULL)
{
gint length = GlobalSize (hdata);
GDK_NOTE (DND, g_print ("...BITMAP (from \"image/bmp\": %d bytes\n",
length));
_gdk_selection_property_store (requestor, target, 8,
g_memdup (ptr, length), length);
GlobalUnlock (hdata);
}
}
else if ((hdata = GetClipboardData (CF_DIB)) != NULL)
{
/* If there's CF_DIB but not "image/bmp", the clipboard
* owner is probably a native Win32 application.
*/
BITMAPINFOHEADER *ptr;
if ((ptr = GlobalLock (hdata)) != NULL)
{
BITMAPFILEHEADER *hdr; /* Need to add a file header so gdk-pixbuf can load it */
gint length = GlobalSize (hdata) + sizeof (BITMAPFILEHEADER);
GDK_NOTE (DND, g_print ("... BITMAP (from CF_DIB): %d bytes\n", length));
data = g_try_malloc (length);
if (data)
{
hdr = (BITMAPFILEHEADER *)data;
hdr->bfType = 0x4d42; /* 0x42 = "B" 0x4d = "M" */
/* Compute the size of the entire file. */
hdr->bfSize = (DWORD) (sizeof (BITMAPFILEHEADER)
+ ptr->biSize + ptr->biClrUsed
* sizeof (RGBQUAD) + ptr->biSizeImage);
hdr->bfReserved1 = 0;
hdr->bfReserved2 = 0;
/* Compute the offset to the array of color indices. */
hdr->bfOffBits = (DWORD) sizeof (BITMAPFILEHEADER)
+ ptr->biSize + ptr->biClrUsed * sizeof (RGBQUAD);
/* Copy the data behind it */
memcpy (data + sizeof (BITMAPFILEHEADER), ptr, length - sizeof (BITMAPFILEHEADER));
_gdk_selection_property_store (requestor, target, 8,
data, length);
}
GlobalUnlock (hdata);
}
}
API_CALL (CloseClipboard, ());
}
else if (selection == GDK_SELECTION_CLIPBOARD)
{
const char *targetname = gdk_atom_name (target);
UINT fmt = 0;
if (!API_CALL (OpenClipboard, (GDK_WINDOW_HWND (requestor))))
return;
/* Check if it's available. In fact, we can simply call
* GetClipboardData (RegisterClipboardFormat (targetname)), but
* the global custom format ID space is limited,
* (0xC000~0xFFFF), and we better not waste an format ID if we
* are just a requestor.
*/
for ( ; 0 != (fmt = EnumClipboardFormats (fmt)); )
{
char sFormat[80];
if (GetClipboardFormatName (fmt, sFormat, 80) > 0 &&
strcmp (sFormat, targetname) == 0)
{
if ((hdata = GetClipboardData (fmt)) != NULL)
{
/* Simply get it without conversion */
guchar *ptr;
gint length;
if ((ptr = GlobalLock (hdata)) != NULL)
{
length = GlobalSize (hdata);
GDK_NOTE (DND, g_print ("... %s: %d bytes\n", targetname, length));
_gdk_selection_property_store (requestor, target, 8,
g_memdup (ptr, length), length);
GlobalUnlock (hdata);
break;
}
}
}
}
API_CALL (CloseClipboard, ());
}
else if (selection == _gdk_win32_dropfiles)
{
/* This means he wants the names of the dropped files.
* gdk_dropfiles_filter already has stored the text/uri-list
* data temporarily in dropfiles_prop.
*/
if (dropfiles_prop != NULL)
{
_gdk_selection_property_store
(requestor, selection, dropfiles_prop->format,
dropfiles_prop->data, dropfiles_prop->length);
g_free (dropfiles_prop);
dropfiles_prop = NULL;
}
}
else
property = GDK_NONE;
/* Generate a selection notify message so that we actually fetch
* the data (if property == _gdk_selection_property) or indicating failure
* (if property == GDK_NONE).
*/
generate_selection_notify (requestor, selection, target, property, time);
}
gint
gdk_selection_property_get (GdkWindow *requestor,
guchar **data,
GdkAtom *ret_type,
gint *ret_format)
{
GdkSelProp *prop;
GSList *prop_list;
g_return_val_if_fail (requestor != NULL, 0);
g_return_val_if_fail (GDK_IS_WINDOW (requestor), 0);
if (GDK_WINDOW_DESTROYED (requestor))
return 0;
GDK_NOTE (DND, g_print ("gdk_selection_property_get: %p\n",
GDK_WINDOW_HWND (requestor)));
prop_list = g_hash_table_lookup (sel_prop_table, GDK_WINDOW_HWND (requestor));
prop = prop_list ? (GdkSelProp *) prop_list->data : NULL;
if (prop == NULL)
{
*data = NULL;
return 0;
}
*data = g_malloc (prop->length + 1);
(*data)[prop->length] = '\0';
if (prop->length > 0)
memmove (*data, prop->data, prop->length);
if (ret_type)
*ret_type = prop->type;
if (ret_format)
*ret_format = prop->format;
return prop->length;
}
void
_gdk_selection_property_delete (GdkWindow *window)
{
GdkSelProp *prop;
GSList *prop_list;
GDK_NOTE (DND, g_print ("_gdk_selection_property_delete: %p\n",
GDK_WINDOW_HWND (window)));
prop_list = g_hash_table_lookup (sel_prop_table, GDK_WINDOW_HWND (window));
if (prop_list && (prop = (GdkSelProp *) prop_list->data) != NULL)
{
g_free (prop->data);
prop_list = g_slist_remove (prop_list, prop);
g_free (prop);
g_hash_table_insert (sel_prop_table, GDK_WINDOW_HWND (window), prop_list);
}
}
void
gdk_selection_send_notify_for_display (GdkDisplay *display,
guint32 requestor,
GdkAtom selection,
GdkAtom target,
GdkAtom property,
guint32 time)
{
#ifdef G_ENABLE_DEBUG
gchar *sel_name, *tgt_name, *prop_name;
#endif
g_return_if_fail (display == _gdk_display);
GDK_NOTE (DND,
(sel_name = gdk_atom_name (selection),
tgt_name = gdk_atom_name (target),
prop_name = gdk_atom_name (property),
g_print ("gdk_selection_send_notify_for_display: %#x %#x (%s) %#x (%s) %#x (%s)\n",
requestor,
(guint) selection, sel_name,
(guint) target, tgt_name,
(guint) property, prop_name),
g_free (sel_name),
g_free (tgt_name),
g_free (prop_name)));
}
/* It's hard to say whether implementing this actually is of any use
* on the Win32 platform? gtk calls only
* gdk_text_property_to_utf8_list_for_display().
*/
gint
gdk_text_property_to_text_list_for_display (GdkDisplay *display,
GdkAtom encoding,
gint format,
const guchar *text,
gint length,
gchar ***list)
{
GError *error = NULL;
gchar *enc_name;
gchar *result;
const gchar *charset;
const gchar *source_charset = NULL;
g_return_val_if_fail (display == _gdk_display, 0);
GDK_NOTE (DND, (enc_name = gdk_atom_name (encoding),
g_print ("gdk_text_property_to_text_list: %s %d %.20s %d\n",
enc_name, format, text, length),
g_free (enc_name)));
if (!list)
return 0;
if (encoding == GDK_TARGET_STRING)
source_charset = "ISO-8859-1";
else if (encoding == _utf8_string)
source_charset = "UTF-8";
else
source_charset = gdk_atom_name (encoding);
g_get_charset (&charset);
result = g_convert (text, length, charset, source_charset,
NULL, NULL, &error);
if (!result)
{
g_error_free (error);
return 0;
}
*list = g_new (gchar *, 1);
**list = result;
return 1;
}
void
gdk_free_text_list (gchar **list)
{
g_return_if_fail (list != NULL);
g_free (*list);
g_free (list);
}
static gint
make_list (const gchar *text,
gint length,
gboolean latin1,
gchar ***list)
{
GSList *strings = NULL;
gint n_strings = 0;
gint i;
const gchar *p = text;
const gchar *q;
GSList *tmp_list;
GError *error = NULL;
while (p < text + length)
{
gchar *str;
q = p;
while (*q && q < text + length)
q++;
if (latin1)
{
str = g_convert (p, q - p,
"UTF-8", "ISO-8859-1",
NULL, NULL, &error);
if (!str)
{
g_warning ("Error converting selection from STRING: %s",
error->message);
g_error_free (error);
}
}
else
str = g_strndup (p, q - p);
if (str)
{
strings = g_slist_prepend (strings, str);
n_strings++;
}
p = q + 1;
}
if (list)
*list = g_new (gchar *, n_strings + 1);
(*list)[n_strings] = NULL;
i = n_strings;
tmp_list = strings;
while (tmp_list)
{
if (list)
(*list)[--i] = tmp_list->data;
else
g_free (tmp_list->data);
tmp_list = tmp_list->next;
}
g_slist_free (strings);
return n_strings;
}
gint
gdk_text_property_to_utf8_list_for_display (GdkDisplay *display,
GdkAtom encoding,
gint format,
const guchar *text,
gint length,
gchar ***list)
{
g_return_val_if_fail (text != NULL, 0);
g_return_val_if_fail (length >= 0, 0);
g_return_val_if_fail (display == _gdk_display, 0);
if (encoding == GDK_TARGET_STRING)
{
return make_list ((gchar *)text, length, TRUE, list);
}
else if (encoding == _utf8_string)
{
return make_list ((gchar *)text, length, FALSE, list);
}
else
{
g_warning ("gdk_text_property_to_utf8_list_for_display: encoding %s not handled\n", gdk_atom_name (encoding));
if (list)
*list = NULL;
return 0;
}
}
gint
gdk_string_to_compound_text_for_display (GdkDisplay *display,
const gchar *str,
GdkAtom *encoding,
gint *format,
guchar **ctext,
gint *length)
{
g_return_val_if_fail (str != NULL, 0);
g_return_val_if_fail (length >= 0, 0);
g_return_val_if_fail (display == _gdk_display, 0);
GDK_NOTE (DND, g_print ("gdk_string_to_compound_text_for_display: %.20s\n", str));
/* Always fail on Win32. No COMPOUND_TEXT support. */
if (encoding)
*encoding = GDK_NONE;
if (format)
*format = 0;
if (ctext)
*ctext = NULL;
if (length)
*length = 0;
return -1;
}
gchar *
gdk_utf8_to_string_target (const gchar *str)
{
return _gdk_utf8_to_string_target_internal (str, strlen (str));
}
gboolean
gdk_utf8_to_compound_text_for_display (GdkDisplay *display,
const gchar *str,
GdkAtom *encoding,
gint *format,
guchar **ctext,
gint *length)
{
g_return_val_if_fail (str != NULL, FALSE);
g_return_val_if_fail (display == _gdk_display, FALSE);
GDK_NOTE (DND, g_print ("gdk_utf8_to_compound_text_for_display: %.20s\n", str));
/* Always fail on Win32. No COMPOUND_TEXT support. */
if (encoding)
*encoding = GDK_NONE;
if (format)
*format = 0;
if (ctext)
*ctext = NULL;
if (length)
*length = 0;
return FALSE;
}
void
gdk_free_compound_text (guchar *ctext)
{
/* As we never generate anything claimed to be COMPOUND_TEXT, this
* should never be called. Or if it is called, ctext should be the
* NULL returned for conversions to COMPOUND_TEXT above.
*/
g_return_if_fail (ctext == NULL);
}
void
gdk_win32_selection_add_targets (GdkWindow *owner,
GdkAtom selection,
gint n_targets,
GdkAtom *targets)
{
HWND hwnd;
const gchar *target_name;
guint formatid;
gint i;
GSList *convertable_formats, *format;
gboolean has_set_dib = FALSE, has_real_dib = FALSE;
if (selection != GDK_SELECTION_CLIPBOARD)
return;
if (owner != NULL)
{
if (GDK_WINDOW_DESTROYED (owner))
return;
hwnd = GDK_WINDOW_HWND (owner);
}
if (!API_CALL (OpenClipboard, (hwnd)))
return;
convertable_formats = gdk_pixbuf_get_formats ();
for (i = 0; i < n_targets; ++i)
{
if (targets[i] == _utf8_string)
continue;
target_name = gdk_atom_name (targets[i]);
if (!(formatid = RegisterClipboardFormat (target_name))) {
WIN32_API_FAILED ("RegisterClipboardFormat");
API_CALL (CloseClipboard, ());
return;
}
g_hash_table_replace (_format_atom_table, GINT_TO_POINTER (formatid), targets[i]);
SetClipboardData (formatid, NULL);
/* We should replace the previous image format associated with
* CF_DIB with "image/bmp" if we find "image/bmp", "image/x-bmp"
* or "image/x-MS-bmp" is available.
*/
if (!has_real_dib &&
(!strcmp (target_name, "image/bmp") ||
!strcmp (target_name, "image/x-bmp") ||
!strcmp (target_name, "image/x-MS-bmp")))
{
g_hash_table_replace (_format_atom_table,
GINT_TO_POINTER (CF_DIB),
targets[i]);
if (!has_set_dib) {
SetClipboardData (CF_DIB, NULL);
has_set_dib = TRUE;
}
has_real_dib = TRUE;
continue;
}
for (format = convertable_formats; !has_set_dib && format; format = format->next)
{
gchar **mime_types =
gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) format->data);
for (; *mime_types; ++mime_types)
{
if (!strcmp (target_name, *mime_types))
{
g_hash_table_replace (_format_atom_table,
GINT_TO_POINTER (CF_DIB),
targets[i]);
SetClipboardData (CF_DIB, NULL);
has_set_dib = TRUE;
break;
}
}
}
}
g_slist_free (convertable_formats);
API_CALL (CloseClipboard, ());
}
/* Convert from types such as "image/jpg" or "image/png" to DIB using
* gdk-pixbuf so that image copied from GTK+ apps can be pasted in
* native apps like mspaint.exe
*/
HGLOBAL
_gdk_win32_selection_convert_to_dib (HGLOBAL hdata,
GdkAtom target)
{
GdkPixbufLoader *loader;
GdkPixbuf *pixbuf;
const gchar *target_name;
guchar *ptr;
gchar *bmp_buf;
gsize size;
gboolean ok;
if (!(target_name = gdk_atom_name (target)))
{
GlobalFree (hdata);
return NULL;
}
if (!strcmp (target_name, "image/bmp") ||
!strcmp (target_name, "image/x-bmp") ||
!strcmp (target_name, "image/x-MS-bmp"))
{
/* No conversion is needed, just strip the BITMAPFILEHEADER */
HGLOBAL hdatanew;
size = GlobalSize (hdata) - 1 - sizeof (BITMAPFILEHEADER);
ptr = GlobalLock (hdata);
memmove (ptr, ptr + sizeof (BITMAPFILEHEADER), size);
GlobalUnlock (hdata);
if (!(hdatanew = GlobalReAlloc (hdata, size, 0))) {
WIN32_API_FAILED ("GlobalReAlloc");
GlobalFree (hdata); /* the old hdata is not freed if error */
}
return hdatanew;
}
/* We actually provide image formats -other than- "image/bmp" etc
* and the requestor is either a native Win32 application or a GTK+
* client that requested "image/bmp".
*/
if (!(loader = gdk_pixbuf_loader_new_with_mime_type (target_name, NULL)))
{
GlobalFree (hdata);
return NULL;
}
ptr = GlobalLock (hdata);
ok = gdk_pixbuf_loader_write (loader, ptr, GlobalSize (hdata) - 1, NULL) &&
gdk_pixbuf_loader_close (loader, NULL);
GlobalUnlock (hdata);
GlobalFree (hdata);
hdata = NULL;
if (ok && (pixbuf = gdk_pixbuf_loader_get_pixbuf (loader)) != NULL)
g_object_ref (pixbuf);
g_object_unref (loader);
if (ok && gdk_pixbuf_save_to_buffer (pixbuf, &bmp_buf, &size, "bmp", NULL, NULL))
{
size -= sizeof (BITMAPFILEHEADER);
if (!(hdata = GlobalAlloc (GMEM_MOVEABLE, size)))
{
WIN32_API_FAILED ("GlobalAlloc");
ok = FALSE;
}
if (ok)
{
ptr = GlobalLock (hdata);
memcpy (ptr, bmp_buf + sizeof (BITMAPFILEHEADER), size);
GlobalUnlock (hdata);
}
g_free (bmp_buf);
g_object_unref (pixbuf);
}
return hdata;
}
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