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winex11: Add helper functions to find and register Win32 clipboard formats. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2016-09-22 13:13:25 +09:00
parent 80d02bc849
commit f4f6353079
1 changed files with 72 additions and 4 deletions
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76
dlls/winex11.drv/clipboard.c
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@ -304,6 +304,75 @@ static const char *debugstr_xatom( Atom atom )
return ret;
}
/**************************************************************************
* find_win32_format
*/
static struct clipboard_format *find_win32_format( UINT id )
{
struct clipboard_format *format;
LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
if (format->id == id) return format;
return NULL;
}
/**************************************************************************
* register_formats
*/
static void register_formats( const UINT *ids, const Atom *atoms, unsigned int count )
{
struct clipboard_format *formats;
unsigned int i;
if (!(formats = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*formats)))) return;
for (i = 0; i < count; i++)
{
formats[i].id = ids[i];
formats[i].atom = atoms[i];
formats[i].import = import_data;
formats[i].export = export_data;
list_add_tail( &format_list, &formats[i].entry );
TRACE( "registered %s atom %s\n", debugstr_format( ids[i] ), debugstr_xatom( atoms[i] ));
}
}
/**************************************************************************
* register_win32_formats
*
* Register Win32 clipboard formats the first time we encounter them.
*/
static void register_win32_formats( const UINT *ids, UINT size )
{
unsigned int count, len;
UINT new_ids[256];
char *names[256];
Atom atoms[256];
WCHAR buffer[256];
while (size)
{
for (count = 0; count < 256 && size; ids++, size--)
{
if (find_win32_format( *ids )) continue; /* it already exists */
if (!GetClipboardFormatNameW( *ids, buffer, 256 )) continue; /* not a named format */
if (!(len = WideCharToMultiByte( CP_UNIXCP, 0, buffer, -1, NULL, 0, NULL, NULL ))) continue;
if (!(names[count] = HeapAlloc( GetProcessHeap(), 0, len ))) continue;
WideCharToMultiByte( CP_UNIXCP, 0, buffer, -1, names[count], len, NULL, NULL );
new_ids[count++] = *ids;
}
if (!count) return;
XInternAtoms( thread_display(), names, count, False, atoms );
register_formats( new_ids, atoms, count );
while (count) HeapFree( GetProcessHeap(), 0, names[--count] );
}
}
/**************************************************************************
* X11DRV_InitClipboard
*/
@ -394,11 +463,9 @@ static void intern_atoms(void)
*/
static struct clipboard_format *register_format( UINT id, Atom prop )
{
struct clipboard_format *format;
struct clipboard_format *format = find_win32_format( id );
/* walk format chain to see if it's already registered */
LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
if (format->id == id) return format;
if (format) return format;
if (!(format = HeapAlloc( GetProcessHeap(), 0, sizeof(*format) ))) return NULL;
format->id = id;
@ -1688,6 +1755,7 @@ static UINT *get_clipboard_formats( UINT *size )
HeapFree( GetProcessHeap(), 0, ids );
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) return NULL;
}
register_win32_formats( ids, *size );
return ids;
}