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/*
* X11 clipboard windows driver
*
* Copyright 1994 Martin Ayotte
* Copyright 1996 Alex Korobka
* Copyright 1999 Noel Borthwick
* Copyright 2003 Ulrich Czekalla for CodeWeavers
* Copyright 2014 Damjan Jovanovic
* Copyright 2016 Alexandre Julliard
*
* 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* NOTES:
* This file contains the X specific implementation for the windows
* Clipboard API.
*
* Wine's internal clipboard is exposed to external apps via the X
* selection mechanism.
* Currently the driver asserts ownership via two selection atoms:
* 1. PRIMARY(XA_PRIMARY)
* 2. CLIPBOARD
*
* In our implementation, the CLIPBOARD selection takes precedence over PRIMARY,
* i.e. if a CLIPBOARD selection is available, it is used instead of PRIMARY.
* When Wine takes ownership of the clipboard, it takes ownership of BOTH selections.
* While giving up selection ownership, if the CLIPBOARD selection is lost,
* it will lose both PRIMARY and CLIPBOARD and empty the clipboard.
* However if only PRIMARY is lost, it will continue to hold the CLIPBOARD selection
* (leaving the clipboard cache content unaffected).
*
* Every format exposed via a windows clipboard format is also exposed through
* a corresponding X selection target. A selection target atom is synthesized
* whenever a new Windows clipboard format is registered via RegisterClipboardFormat,
* or when a built-in format is used for the first time.
* Windows native format are exposed by prefixing the format name with "<WCF>"
* This allows us to uniquely identify windows native formats exposed by other
* running WINE apps.
*
* In order to allow external applications to query WINE for supported formats,
* we respond to the "TARGETS" selection target. (See EVENT_SelectionRequest
* for implementation) We use the same mechanism to query external clients for
* availability of a particular format, by caching the list of available targets
* by using the clipboard cache's "delayed render" mechanism. If a selection client
* does not support the "TARGETS" selection target, we actually attempt to retrieve
* the format requested as a fallback mechanism.
*
* Certain Windows native formats are automatically converted to X native formats
* and vice versa. If a native format is available in the selection, it takes
* precedence, in order to avoid unnecessary conversions.
*
* FIXME: global format list needs a critical section
*/
#include "config.h"
#include "wine/port.h"
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <limits.h>
#include <time.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "shlobj.h"
#include "shellapi.h"
#include "shlwapi.h"
#include "x11drv.h"
#include "wine/list.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(clipboard);
/* Maximum wait time for selection notify */
#define SELECTION_RETRIES 500 /* wait for .5 seconds */
#define SELECTION_WAIT 1000 /* us */
#define SELECTION_UPDATE_DELAY 2000 /* delay between checks of the X11 selection */
typedef BOOL (*EXPORTFUNC)( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
typedef HANDLE (*IMPORTFUNC)( Atom type, const void *data, size_t size );
struct clipboard_format
{
struct list entry;
UINT id;
Atom atom;
IMPORTFUNC import;
EXPORTFUNC export;
};
static HANDLE import_data( Atom type, const void *data, size_t size );
static HANDLE import_enhmetafile( Atom type, const void *data, size_t size );
static HANDLE import_pixmap( Atom type, const void *data, size_t size );
static HANDLE import_image_bmp( Atom type, const void *data, size_t size );
static HANDLE import_string( Atom type, const void *data, size_t size );
static HANDLE import_utf8_string( Atom type, const void *data, size_t size );
static HANDLE import_compound_text( Atom type, const void *data, size_t size );
static HANDLE import_text( Atom type, const void *data, size_t size );
static HANDLE import_text_html( Atom type, const void *data, size_t size );
static HANDLE import_text_uri_list( Atom type, const void *data, size_t size );
static HANDLE import_targets( Atom type, const void *data, size_t size );
static BOOL export_data( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_utf8_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_compound_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_pixmap( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_image_bmp( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_enhmetafile( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_text_html( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_hdrop( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_targets( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_multiple( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL export_timestamp( Display *display, Window win, Atom prop, Atom target, HANDLE handle );
static BOOL read_property( Display *display, Window w, Atom prop,
Atom *type, unsigned char **data, unsigned long *datasize );
/* Clipboard formats */
static const WCHAR RichTextFormatW[] = {'R','i','c','h',' ','T','e','x','t',' ','F','o','r','m','a','t',0};
static const WCHAR GIFW[] = {'G','I','F',0};
static const WCHAR JFIFW[] = {'J','F','I','F',0};
static const WCHAR PNGW[] = {'P','N','G',0};
static const WCHAR HTMLFormatW[] = {'H','T','M','L',' ','F','o','r','m','a','t',0};
static const struct
{
const WCHAR *name;
UINT id;
UINT data;
IMPORTFUNC import;
EXPORTFUNC export;
} builtin_formats[] =
{
{ 0, CF_UNICODETEXT, XATOM_UTF8_STRING, import_utf8_string, export_utf8_string },
{ 0, CF_UNICODETEXT, XATOM_COMPOUND_TEXT, import_compound_text, export_compound_text },
{ 0, CF_UNICODETEXT, XA_STRING, import_string, export_string },
{ 0, CF_UNICODETEXT, XATOM_text_plain, import_string, export_string },
{ 0, CF_UNICODETEXT, XATOM_TEXT, import_text, export_text },
{ 0, CF_SYLK, XATOM_WCF_SYLK, import_data, export_data },
{ 0, CF_DIF, XATOM_WCF_DIF, import_data, export_data },
{ 0, CF_TIFF, XATOM_WCF_TIFF, import_data, export_data },
{ 0, CF_DIB, XA_PIXMAP, import_pixmap, export_pixmap },
{ 0, CF_PENDATA, XATOM_WCF_PENDATA, import_data, export_data },
{ 0, CF_RIFF, XATOM_WCF_RIFF, import_data, export_data },
{ 0, CF_WAVE, XATOM_WCF_WAVE, import_data, export_data },
{ 0, CF_ENHMETAFILE, XATOM_WCF_ENHMETAFILE, import_enhmetafile, export_enhmetafile },
{ 0, CF_HDROP, XATOM_text_uri_list, import_text_uri_list, export_hdrop },
{ 0, CF_DIB, XATOM_image_bmp, import_image_bmp, export_image_bmp },
{ RichTextFormatW, 0, XATOM_text_rtf, import_data, export_data },
{ RichTextFormatW, 0, XATOM_text_richtext, import_data, export_data },
{ GIFW, 0, XATOM_image_gif, import_data, export_data },
{ JFIFW, 0, XATOM_image_jpeg, import_data, export_data },
{ PNGW, 0, XATOM_image_png, import_data, export_data },
{ HTMLFormatW, 0, XATOM_HTML_Format, import_data, export_data },
{ HTMLFormatW, 0, XATOM_text_html, import_text_html, export_text_html },
{ 0, 0, XATOM_TARGETS, import_targets, export_targets },
{ 0, 0, XATOM_MULTIPLE, NULL, export_multiple },
{ 0, 0, XATOM_TIMESTAMP, NULL, export_timestamp },
};
static struct list format_list = LIST_INIT( format_list );
#define NB_BUILTIN_FORMATS (sizeof(builtin_formats) / sizeof(builtin_formats[0]))
#define GET_ATOM(prop) (((prop) < FIRST_XATOM) ? (Atom)(prop) : X11DRV_Atoms[(prop) - FIRST_XATOM])
static DWORD clipboard_thread_id;
static HWND clipboard_hwnd;
static BOOL is_clipboard_owner;
static Window selection_window;
static Window import_window;
static Atom current_selection;
static UINT rendered_formats;
static ULONG64 last_clipboard_update;
static struct clipboard_format **current_x11_formats;
static unsigned int nb_current_x11_formats;
Display *clipboard_display = NULL;
static const char *debugstr_format( UINT id )
{
WCHAR buffer[256];
if (GetClipboardFormatNameW( id, buffer, 256 ))
return wine_dbg_sprintf( "%04x %s", id, debugstr_w(buffer) );
switch (id)
{
case 0: return "(none)";
#define BUILTIN(id) case id: return #id;
BUILTIN(CF_TEXT)
BUILTIN(CF_BITMAP)
BUILTIN(CF_METAFILEPICT)
BUILTIN(CF_SYLK)
BUILTIN(CF_DIF)
BUILTIN(CF_TIFF)
BUILTIN(CF_OEMTEXT)
BUILTIN(CF_DIB)
BUILTIN(CF_PALETTE)
BUILTIN(CF_PENDATA)
BUILTIN(CF_RIFF)
BUILTIN(CF_WAVE)
BUILTIN(CF_UNICODETEXT)
BUILTIN(CF_ENHMETAFILE)
BUILTIN(CF_HDROP)
BUILTIN(CF_LOCALE)
BUILTIN(CF_DIBV5)
BUILTIN(CF_OWNERDISPLAY)
BUILTIN(CF_DSPTEXT)
BUILTIN(CF_DSPBITMAP)
BUILTIN(CF_DSPMETAFILEPICT)
BUILTIN(CF_DSPENHMETAFILE)
#undef BUILTIN
default: return wine_dbg_sprintf( "%04x", id );
}
}
static const char *debugstr_xatom( Atom atom )
{
const char *ret;
char *name;
if (!atom) return "(None)";
name = XGetAtomName( thread_display(), atom );
ret = debugstr_a( name );
XFree( name );
return ret;
}
static int is_atom_error( Display *display, XErrorEvent *event, void *arg )
{
return (event->error_code == BadAtom);
}
/**************************************************************************
* 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;
}
/**************************************************************************
* find_x11_format
*/
static struct clipboard_format *find_x11_format( Atom atom )
{
struct clipboard_format *format;
LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
if (format->atom == atom) return format;
return NULL;
}
/**************************************************************************
* register_builtin_formats
*/
static void register_builtin_formats(void)
{
struct clipboard_format *formats;
unsigned int i;
if (!(formats = HeapAlloc( GetProcessHeap(), 0, NB_BUILTIN_FORMATS * sizeof(*formats)))) return;
for (i = 0; i < NB_BUILTIN_FORMATS; i++)
{
if (builtin_formats[i].name)
formats[i].id = RegisterClipboardFormatW( builtin_formats[i].name );
else
formats[i].id = builtin_formats[i].id;
formats[i].atom = GET_ATOM(builtin_formats[i].data);
formats[i].import = builtin_formats[i].import;
formats[i].export = builtin_formats[i].export;
list_add_tail( &format_list, &formats[i].entry );
}
}
/**************************************************************************
* 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];
if (list_empty( &format_list)) register_builtin_formats();
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] );
}
}
/**************************************************************************
* register_x11_formats
*
* Register X11 atom formats the first time we encounter them.
*/
static void register_x11_formats( const Atom *atoms, UINT size )
{
Display *display = thread_display();
unsigned int i, pos, count;
char *names[256];
UINT ids[256];
Atom new_atoms[256];
WCHAR buffer[256];
if (list_empty( &format_list)) register_builtin_formats();
while (size)
{
for (count = 0; count < 256 && size; atoms++, size--)
if (!find_x11_format( *atoms )) new_atoms[count++] = *atoms;
if (!count) return;
X11DRV_expect_error( display, is_atom_error, NULL );
if (!XGetAtomNames( display, new_atoms, count, names )) count = 0;
if (X11DRV_check_error())
{
WARN( "got some bad atoms, ignoring\n" );
count = 0;
}
for (i = pos = 0; i < count; i++)
{
if (MultiByteToWideChar( CP_UNIXCP, 0, names[i], -1, buffer, 256 ) &&
(ids[pos] = RegisterClipboardFormatW( buffer )))
new_atoms[pos++] = new_atoms[i];
XFree( names[i] );
}
register_formats( ids, new_atoms, pos );
}
}
/**************************************************************************
* put_property
*
* Put data as a property on the specified window.
*/
static void put_property( Display *display, Window win, Atom prop, Atom type, int format,
const void *ptr, size_t size )
{
const unsigned char *data = ptr;
int mode = PropModeReplace;
size_t width = (format == 32) ? sizeof(long) : format / 8;
size_t max_size = XExtendedMaxRequestSize( display ) * 4;
if (!max_size) max_size = XMaxRequestSize( display ) * 4;
max_size -= 64; /* request overhead */
do
{
size_t count = min( size, max_size / width );
XChangeProperty( display, win, prop, type, format, mode, data, count );
mode = PropModeAppend;
size -= count;
data += count * width;
} while (size > 0);
}
/**************************************************************************
* convert_selection
*/
static BOOL convert_selection( Display *display, Window win, Atom selection,
struct clipboard_format *format, Atom *type,
unsigned char **data, unsigned long *size )
{
int i;
XEvent event;
TRACE( "import %s from %s win %lx to format %s\n",
debugstr_xatom( format->atom ), debugstr_xatom( selection ),
win, debugstr_format( format->id ) );
XConvertSelection( display, selection, format->atom, x11drv_atom(SELECTION_DATA), win, CurrentTime );
for (i = 0; i < SELECTION_RETRIES; i++)
{
Bool res = XCheckTypedWindowEvent( display, win, SelectionNotify, &event );
if (res && event.xselection.selection == selection && event.xselection.target == format->atom)
return read_property( display, win, event.xselection.property, type, data, size );
usleep( SELECTION_WAIT );
}
ERR( "Timed out waiting for SelectionNotify event\n" );
return FALSE;
}
/***********************************************************************
* bitmap_info_size
*
* Return the size of the bitmap info structure including color table.
*/
static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
{
unsigned int colors, size, masks = 0;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
return sizeof(BITMAPCOREHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
}
else /* assume BITMAPINFOHEADER */
{
colors = info->bmiHeader.biClrUsed;
if (!colors && (info->bmiHeader.biBitCount <= 8))
colors = 1 << info->bmiHeader.biBitCount;
if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
}
}
/***********************************************************************
* create_dib_from_bitmap
*
* Allocates a packed DIB and copies the bitmap data into it.
*/
static HGLOBAL create_dib_from_bitmap(HBITMAP hBmp)
{
BITMAP bmp;
HDC hdc;
HGLOBAL hPackedDIB;
LPBYTE pPackedDIB;
LPBITMAPINFOHEADER pbmiHeader;
unsigned int cDataSize, cPackedSize, OffsetBits;
int nLinesCopied;
if (!GetObjectW( hBmp, sizeof(bmp), &bmp )) return 0;
/*
* A packed DIB contains a BITMAPINFO structure followed immediately by
* an optional color palette and the pixel data.
*/
/* Calculate the size of the packed DIB */
cDataSize = abs( bmp.bmHeight ) * (((bmp.bmWidth * bmp.bmBitsPixel + 31) / 8) & ~3);
cPackedSize = sizeof(BITMAPINFOHEADER)
+ ( (bmp.bmBitsPixel <= 8) ? (sizeof(RGBQUAD) * (1 << bmp.bmBitsPixel)) : 0 )
+ cDataSize;
/* Get the offset to the bits */
OffsetBits = cPackedSize - cDataSize;
/* Allocate the packed DIB */
TRACE("\tAllocating packed DIB of size %d\n", cPackedSize);
hPackedDIB = GlobalAlloc( GMEM_FIXED, cPackedSize );
if ( !hPackedDIB )
{
WARN("Could not allocate packed DIB!\n");
return 0;
}
/* A packed DIB starts with a BITMAPINFOHEADER */
pPackedDIB = GlobalLock(hPackedDIB);
pbmiHeader = (LPBITMAPINFOHEADER)pPackedDIB;
/* Init the BITMAPINFOHEADER */
pbmiHeader->biSize = sizeof(BITMAPINFOHEADER);
pbmiHeader->biWidth = bmp.bmWidth;
pbmiHeader->biHeight = bmp.bmHeight;
pbmiHeader->biPlanes = 1;
pbmiHeader->biBitCount = bmp.bmBitsPixel;
pbmiHeader->biCompression = BI_RGB;
pbmiHeader->biSizeImage = 0;
pbmiHeader->biXPelsPerMeter = pbmiHeader->biYPelsPerMeter = 0;
pbmiHeader->biClrUsed = 0;
pbmiHeader->biClrImportant = 0;
/* Retrieve the DIB bits from the bitmap and fill in the
* DIB color table if present */
hdc = GetDC( 0 );
nLinesCopied = GetDIBits(hdc, /* Handle to device context */
hBmp, /* Handle to bitmap */
0, /* First scan line to set in dest bitmap */
bmp.bmHeight, /* Number of scan lines to copy */
pPackedDIB + OffsetBits, /* [out] Address of array for bitmap bits */
(LPBITMAPINFO) pbmiHeader, /* [out] Address of BITMAPINFO structure */
0); /* RGB or palette index */
GlobalUnlock(hPackedDIB);
ReleaseDC( 0, hdc );
/* Cleanup if GetDIBits failed */
if (nLinesCopied != bmp.bmHeight)
{
TRACE("\tGetDIBits returned %d. Actual lines=%d\n", nLinesCopied, bmp.bmHeight);
GlobalFree(hPackedDIB);
hPackedDIB = 0;
}
return hPackedDIB;
}
/***********************************************************************
* uri_to_dos
*
* Converts a text/uri-list URI to DOS filename.
*/
static WCHAR* uri_to_dos(char *encodedURI)
{
WCHAR *ret = NULL;
int i;
int j = 0;
char *uri = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, strlen(encodedURI) + 1);
if (uri == NULL)
return NULL;
for (i = 0; encodedURI[i]; ++i)
{
if (encodedURI[i] == '%')
{
if (encodedURI[i+1] && encodedURI[i+2])
{
char buffer[3];
int number;
buffer[0] = encodedURI[i+1];
buffer[1] = encodedURI[i+2];
buffer[2] = '\0';
sscanf(buffer, "%x", &number);
uri[j++] = number;
i += 2;
}
else
{
WARN("invalid URI encoding in %s\n", debugstr_a(encodedURI));
HeapFree(GetProcessHeap(), 0, uri);
return NULL;
}
}
else
uri[j++] = encodedURI[i];
}
/* Read http://www.freedesktop.org/wiki/Draganddropwarts and cry... */
if (strncmp(uri, "file:/", 6) == 0)
{
if (uri[6] == '/')
{
if (uri[7] == '/')
{
/* file:///path/to/file (nautilus, thunar) */
ret = wine_get_dos_file_name(&uri[7]);
}
else if (uri[7])
{
/* file://hostname/path/to/file (X file drag spec) */
char hostname[256];
char *path = strchr(&uri[7], '/');
if (path)
{
*path = '\0';
if (strcmp(&uri[7], "localhost") == 0)
{
*path = '/';
ret = wine_get_dos_file_name(path);
}
else if (gethostname(hostname, sizeof(hostname)) == 0)
{
if (strcmp(hostname, &uri[7]) == 0)
{
*path = '/';
ret = wine_get_dos_file_name(path);
}
}
}
}
}
else if (uri[6])
{
/* file:/path/to/file (konqueror) */
ret = wine_get_dos_file_name(&uri[5]);
}
}
HeapFree(GetProcessHeap(), 0, uri);
return ret;
}
/**************************************************************************
* unicode_text_from_string
*
* Convert a string in the specified encoding to CF_UNICODETEXT format.
*/
static HANDLE unicode_text_from_string( UINT codepage, const void *data, size_t size )
{
DWORD i, j, count;
WCHAR *strW;
count = MultiByteToWideChar( codepage, 0, data, size, NULL, 0);
if (!(strW = GlobalAlloc( GMEM_FIXED, (count * 2 + 1) * sizeof(WCHAR) ))) return 0;
MultiByteToWideChar( codepage, 0, data, size, strW + count, count );
for (i = j = 0; i < count; i++)
{
if (strW[i + count] == '\n') strW[j++] = '\r';
strW[j++] = strW[i + count];
}
strW[j++] = 0;
GlobalReAlloc( strW, j * sizeof(WCHAR), GMEM_FIXED ); /* release unused space */
TRACE( "returning %s\n", debugstr_wn( strW, j - 1 ));
return strW;
}
/**************************************************************************
* import_string
*
* Import XA_STRING, converting the string to CF_UNICODETEXT.
*/
static HANDLE import_string( Atom type, const void *data, size_t size )
{
return unicode_text_from_string( 28591, data, size );
}
/**************************************************************************
* import_utf8_string
*
* Import XA_UTF8_STRING, converting the string to CF_UNICODETEXT.
*/
static HANDLE import_utf8_string( Atom type, const void *data, size_t size )
{
return unicode_text_from_string( CP_UTF8, data, size );
}
/**************************************************************************
* import_compound_text
*
* Import COMPOUND_TEXT to CF_UNICODETEXT.
*/
static HANDLE import_compound_text( Atom type, const void *data, size_t size )
{
char** srcstr;
int count;
HANDLE ret;
XTextProperty txtprop;
txtprop.value = (BYTE *)data;
txtprop.nitems = size;
txtprop.encoding = x11drv_atom(COMPOUND_TEXT);
txtprop.format = 8;
if (XmbTextPropertyToTextList( thread_display(), &txtprop, &srcstr, &count ) != Success) return 0;
if (!count) return 0;
ret = unicode_text_from_string( CP_UNIXCP, srcstr[0], strlen(srcstr[0]) + 1 );
XFreeStringList(srcstr);
return ret;
}
/**************************************************************************
* import_text
*
* Import XA_TEXT, converting the string to CF_UNICODETEXT.
*/
static HANDLE import_text( Atom type, const void *data, size_t size )
{
if (type == XA_STRING) return import_string( type, data, size );
if (type == x11drv_atom(UTF8_STRING)) return import_utf8_string( type, data, size );
if (type == x11drv_atom(COMPOUND_TEXT)) return import_compound_text( type, data, size );
FIXME( "unsupported TEXT type %s\n", debugstr_xatom( type ));
return 0;
}
/**************************************************************************
* import_pixmap
*
* Import XA_PIXMAP, converting the image to CF_DIB.
*/
static HANDLE import_pixmap( Atom type, const void *data, size_t size )
{
const Pixmap *pPixmap = (const Pixmap *)data;
BYTE *ptr = NULL;
XVisualInfo vis = default_visual;
char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
BITMAPINFO *info = (BITMAPINFO *)buffer;
struct gdi_image_bits bits;
Window root;
int x,y; /* Unused */
unsigned border_width; /* Unused */
unsigned int depth, width, height;
/* Get the Pixmap dimensions and bit depth */
if (!XGetGeometry(gdi_display, *pPixmap, &root, &x, &y, &width, &height,
&border_width, &depth)) depth = 0;
if (!pixmap_formats[depth]) return 0;
TRACE( "pixmap properties: width=%d, height=%d, depth=%d\n", width, height, depth );
if (depth != vis.depth) switch (pixmap_formats[depth]->bits_per_pixel)
{
case 1:
case 4:
case 8:
break;
case 16: /* assume R5G5B5 */
vis.red_mask = 0x7c00;
vis.green_mask = 0x03e0;
vis.blue_mask = 0x001f;
break;
case 24: /* assume R8G8B8 */
case 32: /* assume A8R8G8B8 */
vis.red_mask = 0xff0000;
vis.green_mask = 0x00ff00;
vis.blue_mask = 0x0000ff;
break;
default:
return 0;
}
if (!get_pixmap_image( *pPixmap, width, height, &vis, info, &bits ))
{
DWORD info_size = bitmap_info_size( info, DIB_RGB_COLORS );
ptr = GlobalAlloc( GMEM_FIXED, info_size + info->bmiHeader.biSizeImage );
if (ptr)
{
memcpy( ptr, info, info_size );
memcpy( ptr + info_size, bits.ptr, info->bmiHeader.biSizeImage );
}
if (bits.free) bits.free( &bits );
}
return ptr;
}
/**************************************************************************
* import_image_bmp
*
* Import image/bmp, converting the image to CF_DIB.
*/
static HANDLE import_image_bmp( Atom type, const void *data, size_t size )
{
HANDLE hClipData = 0;
const BITMAPFILEHEADER *bfh = data;
if (size >= sizeof(BITMAPFILEHEADER)+sizeof(BITMAPCOREHEADER) &&
bfh->bfType == 0x4d42 /* "BM" */)
{
const BITMAPINFO *bmi = (const BITMAPINFO *)(bfh + 1);
HBITMAP hbmp;
HDC hdc = GetDC(0);
if ((hbmp = CreateDIBitmap( hdc, &bmi->bmiHeader, CBM_INIT,
(const BYTE *)data + bfh->bfOffBits, bmi, DIB_RGB_COLORS )))
{
hClipData = create_dib_from_bitmap( hbmp );
DeleteObject(hbmp);
}
ReleaseDC(0, hdc);
}
return hClipData;
}
/**************************************************************************
* import_enhmetafile
*/
static HANDLE import_enhmetafile( Atom type, const void *data, size_t size )
{
return SetEnhMetaFileBits( size, data );
}
/**************************************************************************
* import_text_html
*/
static HANDLE import_text_html( Atom type, const void *data, size_t size )
{
static const char header[] =
"Version:0.9\n"
"StartHTML:0000000100\n"
"EndHTML:%010lu\n"
"StartFragment:%010lu\n"
"EndFragment:%010lu\n"
"<!--StartFragment-->";
static const char trailer[] = "\n<!--EndFragment-->";
char *text = NULL;
HANDLE ret;
SIZE_T len, total;
/* Firefox uses UTF-16LE with byte order mark. Convert to UTF-8 without the BOM. */
if (size >= sizeof(WCHAR) && ((const WCHAR *)data)[0] == 0xfeff)
{
len = WideCharToMultiByte( CP_UTF8, 0, (const WCHAR *)data + 1, size / sizeof(WCHAR) - 1,
NULL, 0, NULL, NULL );
if (!(text = HeapAlloc( GetProcessHeap(), 0, len ))) return 0;
WideCharToMultiByte( CP_UTF8, 0, (const WCHAR *)data + 1, size / sizeof(WCHAR) - 1,
text, len, NULL, NULL );
size = len;
data = text;
}
len = strlen( header ) + 12; /* 3 * 4 extra chars for %010lu */
total = len + size + sizeof(trailer);
if ((ret = GlobalAlloc( GMEM_FIXED, total )))
{
char *p = ret;
p += sprintf( p, header, total - 1, len, len + size + 1 /* include the final \n in the data */ );
memcpy( p, data, size );
strcpy( p + size, trailer );
TRACE( "returning %s\n", debugstr_a( ret ));
}
HeapFree( GetProcessHeap(), 0, text );
return ret;
}
/**************************************************************************
* import_text_uri_list
*
* Import text/uri-list.
*/
static HANDLE import_text_uri_list( Atom type, const void *data, size_t size )
{
const char *uriList = data;
char *uri;
WCHAR *path;
WCHAR *out = NULL;
int total = 0;
int capacity = 4096;
int start = 0;
int end = 0;
DROPFILES *dropFiles = NULL;
if (!(out = HeapAlloc(GetProcessHeap(), 0, capacity * sizeof(WCHAR)))) return 0;
while (end < size)
{
while (end < size && uriList[end] != '\r')
++end;
if (end < (size - 1) && uriList[end+1] != '\n')
{
WARN("URI list line doesn't end in \\r\\n\n");
break;
}
uri = HeapAlloc(GetProcessHeap(), 0, end - start + 1);
if (uri == NULL)
break;
lstrcpynA(uri, &uriList[start], end - start + 1);
path = uri_to_dos(uri);
TRACE("converted URI %s to DOS path %s\n", debugstr_a(uri), debugstr_w(path));
HeapFree(GetProcessHeap(), 0, uri);
if (path)
{
int pathSize = strlenW(path) + 1;
if (pathSize > capacity - total)
{
capacity = 2*capacity + pathSize;
out = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, out, (capacity + 1)*sizeof(WCHAR));
if (out == NULL)
goto done;
}
memcpy(&out[total], path, pathSize * sizeof(WCHAR));
total += pathSize;
done:
HeapFree(GetProcessHeap(), 0, path);
if (out == NULL)
break;
}
start = end + 2;
end = start;
}
if (out && end >= size)
{
if ((dropFiles = GlobalAlloc( GMEM_FIXED, sizeof(DROPFILES) + (total + 1) * sizeof(WCHAR) )))
{
dropFiles->pFiles = sizeof(DROPFILES);
dropFiles->pt.x = 0;
dropFiles->pt.y = 0;
dropFiles->fNC = 0;
dropFiles->fWide = TRUE;
out[total] = '\0';
memcpy( (char*)dropFiles + dropFiles->pFiles, out, (total + 1) * sizeof(WCHAR) );
}
}
HeapFree(GetProcessHeap(), 0, out);
return dropFiles;
}
/**************************************************************************
* import_targets
*
* Import TARGETS and mark the corresponding clipboard formats as available.
*/
static HANDLE import_targets( Atom type, const void *data, size_t size )
{
UINT i, pos, count = size / sizeof(Atom);
const Atom *properties = data;
struct clipboard_format *format, **formats;
if (type != XA_ATOM && type != x11drv_atom(TARGETS)) return 0;
register_x11_formats( properties, count );
/* the builtin formats contain duplicates, so allocate some extra space */
if (!(formats = HeapAlloc( GetProcessHeap(), 0, (count + NB_BUILTIN_FORMATS) * sizeof(*formats ))))
return 0;
pos = 0;
LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
{
for (i = 0; i < count; i++) if (properties[i] == format->atom) break;
if (i == count) continue;
if (format->import && format->id)
{
TRACE( "property %s -> format %s\n",
debugstr_xatom( properties[i] ), debugstr_format( format->id ));
SetClipboardData( format->id, 0 );
formats[pos++] = format;
}
else TRACE( "property %s (ignoring)\n", debugstr_xatom( properties[i] ));
}
HeapFree( GetProcessHeap(), 0, current_x11_formats );
current_x11_formats = formats;
nb_current_x11_formats = pos;
return (HANDLE)1;
}
/**************************************************************************
* import_data
*
* Generic import clipboard data routine.
*/
static HANDLE import_data( Atom type, const void *data, size_t size )
{
void *ret = GlobalAlloc( GMEM_FIXED, size );
if (ret) memcpy( ret, data, size );
return ret;
}
/**************************************************************************
* import_selection
*
* Import the specified format from the selection and return a global handle to the data.
*/
static HANDLE import_selection( Display *display, Window win, Atom selection,
struct clipboard_format *format )
{
unsigned char *data;
unsigned long size;
Atom type;
HANDLE ret;
if (!format->import) return 0;
if (!convert_selection( display, win, selection, format, &type, &data, &size ))
{
TRACE( "failed to convert selection\n" );
return 0;
}
ret = format->import( type, data, size );
HeapFree( GetProcessHeap(), 0, data );
return ret;
}
/**************************************************************************
* X11DRV_CLIPBOARD_ImportSelection
*
* Import the X selection into the clipboard format registered for the given X target.
*/
void X11DRV_CLIPBOARD_ImportSelection( Display *display, Window win, Atom selection,
Atom *targets, UINT count,
void (*callback)( Atom, UINT, HANDLE ))
{
UINT i;
HANDLE handle;
struct clipboard_format *format;
register_x11_formats( targets, count );
for (i = 0; i < count; i++)
{
if (!(format = find_x11_format( targets[i] ))) continue;
if (!format->id) continue;
if (!(handle = import_selection( display, win, selection, format ))) continue;
callback( targets[i], format->id, handle );
}
}
/**************************************************************************
* render_format
*/
static HANDLE render_format( UINT id )
{
Display *display = thread_display();
unsigned int i;
HANDLE handle = 0;
if (!current_selection) return 0;
for (i = 0; i < nb_current_x11_formats; i++)
{
if (current_x11_formats[i]->id != id) continue;
handle = import_selection( display, import_window, current_selection, current_x11_formats[i] );
if (handle) SetClipboardData( id, handle );
break;
}
return handle;
}
/**************************************************************************
* export_data
*
* Generic export clipboard data routine.
*/
static BOOL export_data( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
void *ptr = GlobalLock( handle );
if (!ptr) return FALSE;
put_property( display, win, prop, target, 8, ptr, GlobalSize( handle ));
GlobalUnlock( handle );
return TRUE;
}
/**************************************************************************
* string_from_unicode_text
*
* Convert CF_UNICODETEXT data to a string in the specified codepage.
*/
static char *string_from_unicode_text( UINT codepage, HANDLE handle, UINT *size )
{
UINT i, j;
char *str;
WCHAR *strW = GlobalLock( handle );
UINT lenW = GlobalSize( handle ) / sizeof(WCHAR);
DWORD len = WideCharToMultiByte( codepage, 0, strW, lenW, NULL, 0, NULL, NULL );
if ((str = HeapAlloc( GetProcessHeap(), 0, len )))
{
WideCharToMultiByte( codepage, 0, strW, lenW, str, len, NULL, NULL);
GlobalUnlock( handle );
/* remove carriage returns */
for (i = j = 0; i < len; i++)
{
if (str[i] == '\r' && (i == len - 1 || str[i + 1] == '\n')) continue;
str[j++] = str[i];
}
while (j && !str[j - 1]) j--; /* remove trailing nulls */
*size = j;
TRACE( "returning %s\n", debugstr_an( str, j ));
}
GlobalUnlock( handle );
return str;
}
/**************************************************************************
* export_string
*
* Export CF_UNICODETEXT converting the string to XA_STRING.
*/
static BOOL export_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
UINT size;
char *text = string_from_unicode_text( 28591, handle, &size );
if (!text) return FALSE;
put_property( display, win, prop, target, 8, text, size );
HeapFree( GetProcessHeap(), 0, text );
GlobalUnlock( handle );
return TRUE;
}
/**************************************************************************
* export_utf8_string
*
* Export CF_UNICODE converting the string to UTF8.
*/
static BOOL export_utf8_string( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
UINT size;
char *text = string_from_unicode_text( CP_UTF8, handle, &size );
if (!text) return FALSE;
put_property( display, win, prop, target, 8, text, size );
HeapFree( GetProcessHeap(), 0, text );
GlobalUnlock( handle );
return TRUE;
}
/**************************************************************************
* export_text
*
* Export CF_UNICODE to the polymorphic TEXT type, using UTF8.
*/
static BOOL export_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
return export_utf8_string( display, win, prop, x11drv_atom(UTF8_STRING), handle );
}
/**************************************************************************
* export_compound_text
*
* Export CF_UNICODE to COMPOUND_TEXT
*/
static BOOL export_compound_text( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
XTextProperty textprop;
XICCEncodingStyle style;
UINT size;
char *text = string_from_unicode_text( CP_UNIXCP, handle, &size );
if (!text) return FALSE;
if (target == x11drv_atom(COMPOUND_TEXT))
style = XCompoundTextStyle;
else
style = XStdICCTextStyle;
/* Update the X property */
if (XmbTextListToTextProperty( display, &text, 1, style, &textprop ) == Success)
{
XSetTextProperty( display, win, &textprop, prop );
XFree( textprop.value );
}
HeapFree( GetProcessHeap(), 0, text );
return TRUE;
}
/**************************************************************************
* export_pixmap
*
* Export CF_DIB to XA_PIXMAP.
*/
static BOOL export_pixmap( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
Pixmap pixmap;
BITMAPINFO *pbmi;
struct gdi_image_bits bits;
pbmi = GlobalLock( handle );
bits.ptr = (LPBYTE)pbmi + bitmap_info_size( pbmi, DIB_RGB_COLORS );
bits.free = NULL;
bits.is_copy = FALSE;
pixmap = create_pixmap_from_image( 0, &default_visual, pbmi, &bits, DIB_RGB_COLORS );
GlobalUnlock( handle );
put_property( display, win, prop, target, 32, &pixmap, 1 );
/* FIXME: free the pixmap when the property is deleted */
return TRUE;
}
/**************************************************************************
* export_image_bmp
*
* Export CF_DIB to image/bmp.
*/
static BOOL export_image_bmp( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
LPBYTE dibdata = GlobalLock( handle );
UINT bmpsize;
BITMAPFILEHEADER *bfh;
bmpsize = sizeof(BITMAPFILEHEADER) + GlobalSize( handle );
bfh = HeapAlloc( GetProcessHeap(), 0, bmpsize );
if (bfh)
{
/* bitmap file header */
bfh->bfType = 0x4d42; /* "BM" */
bfh->bfSize = bmpsize;
bfh->bfReserved1 = 0;
bfh->bfReserved2 = 0;
bfh->bfOffBits = sizeof(BITMAPFILEHEADER) + bitmap_info_size((BITMAPINFO*)dibdata, DIB_RGB_COLORS);
/* rest of bitmap is the same as the packed dib */
memcpy(bfh+1, dibdata, bmpsize-sizeof(BITMAPFILEHEADER));
}
GlobalUnlock( handle );
put_property( display, win, prop, target, 8, bfh, bmpsize );
HeapFree( GetProcessHeap(), 0, bfh );
return TRUE;
}
/**************************************************************************
* export_enhmetafile
*
* Export EnhMetaFile.
*/
static BOOL export_enhmetafile( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
unsigned int size;
void *ptr;
if (!(size = GetEnhMetaFileBits( handle, 0, NULL ))) return FALSE;
if (!(ptr = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
GetEnhMetaFileBits( handle, size, ptr );
put_property( display, win, prop, target, 8, ptr, size );
HeapFree( GetProcessHeap(), 0, ptr );
return TRUE;
}
/**************************************************************************
* export_text_html
*
* Export HTML Format to text/html.
*
* FIXME: We should attempt to add an <a base> tag and convert windows paths.
*/
static BOOL export_text_html( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
const char *p, *data;
UINT start = 0, end = 0;
BOOL ret = TRUE;
if (!(data = GlobalLock( handle ))) return FALSE;
p = data;
while (*p && *p != '<')
{
if (!strncmp( p, "StartFragment:", 14 )) start = atoi( p + 14 );
else if (!strncmp( p, "EndFragment:", 12 )) end = atoi( p + 12 );
if (!(p = strpbrk( p, "\r\n" ))) break;
while (*p == '\r' || *p == '\n') p++;
}
if (start && start < end && end <= GlobalSize( handle ))
put_property( display, win, prop, target, 8, data + start, end - start );
else
ret = FALSE;
GlobalUnlock( handle );
return ret;
}
/**************************************************************************
* export_hdrop
*
* Export CF_HDROP format to text/uri-list.
*/
static BOOL export_hdrop( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
UINT i;
UINT numFiles;
char *textUriList;
UINT textUriListSize = 32;
UINT next = 0;
textUriList = HeapAlloc( GetProcessHeap(), 0, textUriListSize );
if (!textUriList) return FALSE;
numFiles = DragQueryFileW( handle, 0xFFFFFFFF, NULL, 0 );
for (i = 0; i < numFiles; i++)
{
UINT dosFilenameSize;
WCHAR *dosFilename = NULL;
char *unixFilename = NULL;
UINT uriSize;
UINT u;
dosFilenameSize = 1 + DragQueryFileW( handle, i, NULL, 0 );
dosFilename = HeapAlloc(GetProcessHeap(), 0, dosFilenameSize*sizeof(WCHAR));
if (dosFilename == NULL) goto failed;
DragQueryFileW( handle, i, dosFilename, dosFilenameSize );
unixFilename = wine_get_unix_file_name(dosFilename);
HeapFree(GetProcessHeap(), 0, dosFilename);
if (unixFilename == NULL) goto failed;
uriSize = 8 + /* file:/// */
3 * (lstrlenA(unixFilename) - 1) + /* "%xy" per char except first '/' */
2; /* \r\n */
if ((next + uriSize) > textUriListSize)
{
UINT biggerSize = max( 2 * textUriListSize, next + uriSize );
void *bigger = HeapReAlloc( GetProcessHeap(), 0, textUriList, biggerSize );
if (bigger)
{
textUriList = bigger;
textUriListSize = biggerSize;
}
else
{
HeapFree(GetProcessHeap(), 0, unixFilename);
goto failed;
}
}
lstrcpyA(&textUriList[next], "file:///");
next += 8;
/* URL encode everything - unnecessary, but easier/lighter than linking in shlwapi, and can't hurt */
for (u = 1; unixFilename[u]; u++)
{
static const char hex_table[] = "0123456789abcdef";
textUriList[next++] = '%';
textUriList[next++] = hex_table[unixFilename[u] >> 4];
textUriList[next++] = hex_table[unixFilename[u] & 0xf];
}
textUriList[next++] = '\r';
textUriList[next++] = '\n';
HeapFree(GetProcessHeap(), 0, unixFilename);
}
put_property( display, win, prop, target, 8, textUriList, next );
HeapFree( GetProcessHeap(), 0, textUriList );
return TRUE;
failed:
HeapFree( GetProcessHeap(), 0, textUriList );
return FALSE;
}
/***********************************************************************
* get_clipboard_formats
*
* Return a list of all formats currently available on the Win32 clipboard.
* Helper for export_targets.
*/
static UINT *get_clipboard_formats( UINT *size )
{
UINT *ids;
*size = 256;
for (;;)
{
if (!(ids = HeapAlloc( GetProcessHeap(), 0, *size * sizeof(*ids) ))) return NULL;
if (GetUpdatedClipboardFormats( ids, *size, size )) break;
HeapFree( GetProcessHeap(), 0, ids );
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) return NULL;
}
register_win32_formats( ids, *size );
return ids;
}
/***********************************************************************
* is_format_available
*
* Check if a clipboard format is included in the list.
* Helper for export_targets.
*/
static BOOL is_format_available( UINT format, const UINT *ids, unsigned int count )
{
while (count--) if (*ids++ == format) return TRUE;
return FALSE;
}
/***********************************************************************
* export_targets
*
* Service a TARGETS selection request event
*/
static BOOL export_targets( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
struct clipboard_format *format;
UINT pos, count, *formats;
Atom *targets;
if (!(formats = get_clipboard_formats( &count ))) return FALSE;
/* the builtin formats contain duplicates, so allocate some extra space */
if (!(targets = HeapAlloc( GetProcessHeap(), 0, (count + NB_BUILTIN_FORMATS) * sizeof(*targets) )))
{
HeapFree( GetProcessHeap(), 0, formats );
return FALSE;
}
pos = 0;
LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
{
if (!format->export) continue;
/* formats with id==0 are always exported */
if (format->id && !is_format_available( format->id, formats, count )) continue;
TRACE( "%d: %s -> %s\n", pos, debugstr_format( format->id ), debugstr_xatom( format->atom ));
targets[pos++] = format->atom;
}
put_property( display, win, prop, XA_ATOM, 32, targets, pos );
HeapFree( GetProcessHeap(), 0, targets );
HeapFree( GetProcessHeap(), 0, formats );
return TRUE;
}
/**************************************************************************
* export_selection
*
* Export selection data, depending on the target type.
*/
static BOOL export_selection( Display *display, Window win, Atom prop, Atom target )
{
struct clipboard_format *format;
HANDLE handle = 0;
BOOL open = FALSE, ret = FALSE;
LIST_FOR_EACH_ENTRY( format, &format_list, struct clipboard_format, entry )
{
if (format->atom != target) continue;
if (!format->export) continue;
if (!format->id)
{
TRACE( "win %lx prop %s target %s\n", win, debugstr_xatom( prop ), debugstr_xatom( target ));
ret = format->export( display, win, prop, target, 0 );
break;
}
if (!open && !(open = OpenClipboard( clipboard_hwnd )))
{
ERR( "failed to open clipboard for %s\n", debugstr_xatom( target ));
return FALSE;
}
if ((handle = GetClipboardData( format->id )))
{
TRACE( "win %lx prop %s target %s exporting %s %p\n",
win, debugstr_xatom( prop ), debugstr_xatom( target ),
debugstr_format( format->id ), handle );
ret = format->export( display, win, prop, target, handle );
break;
}
/* keep looking for another Win32 format mapping to the same target */
}
if (open) CloseClipboard();
return ret;
}
/***********************************************************************
* export_multiple
*
* Service a MULTIPLE selection request event
* prop contains a list of (target,property) atom pairs.
* The first atom names a target and the second names a property.
* The effect is as if we have received a sequence of SelectionRequest events
* (one for each atom pair) except that:
* 1. We reply with a SelectionNotify only when all the requested conversions
* have been performed.
* 2. If we fail to convert the target named by an atom in the MULTIPLE property,
* we replace the atom in the property by None.
*/
static BOOL export_multiple( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
Atom atype;
int aformat;
Atom *list;
unsigned long i, count, failed, remain;
/* Read the MULTIPLE property contents. This should contain a list of
* (target,property) atom pairs.
*/
if (XGetWindowProperty( display, win, prop, 0, 0x3FFF, False, AnyPropertyType, &atype, &aformat,
&count, &remain, (unsigned char**)&list ))
return FALSE;
TRACE( "type %s format %d count %ld remain %ld\n",
debugstr_xatom( atype ), aformat, count, remain );
/*
* Make sure we got what we expect.
* NOTE: According to the X-ICCCM Version 2.0 documentation the property sent
* in a MULTIPLE selection request should be of type ATOM_PAIR.
* However some X apps(such as XPaint) are not compliant with this and return
* a user defined atom in atype when XGetWindowProperty is called.
* The data *is* an atom pair but is not denoted as such.
*/
if (aformat == 32 /* atype == xAtomPair */ )
{
for (i = failed = 0; i < count; i += 2)
{
if (list[i+1] == None) continue;
if (export_selection( display, win, list[i + 1], list[i] )) continue;
failed++;
list[i + 1] = None;
}
if (failed) put_property( display, win, prop, atype, 32, list, count );
}
XFree( list );
return TRUE;
}
/***********************************************************************
* export_timestamp
*
* Export the timestamp that was used to acquire the selection
*/
static BOOL export_timestamp( Display *display, Window win, Atom prop, Atom target, HANDLE handle )
{
Time time = CurrentTime; /* FIXME */
put_property( display, win, prop, XA_INTEGER, 32, &time, 1 );
return TRUE;
}
/**************************************************************************
* X11DRV_CLIPBOARD_GetProperty
* Gets type, data and size.
*/
static BOOL X11DRV_CLIPBOARD_GetProperty(Display *display, Window w, Atom prop,
Atom *atype, unsigned char** data, unsigned long* datasize)
{
int aformat;
unsigned long pos = 0, nitems, remain, count;
unsigned char *val = NULL, *buffer;
for (;;)
{
if (XGetWindowProperty(display, w, prop, pos, INT_MAX / 4, False,
AnyPropertyType, atype, &aformat, &nitems, &remain, &buffer))
{
WARN("Failed to read property\n");
HeapFree( GetProcessHeap(), 0, val );
return FALSE;
}
count = get_property_size( aformat, nitems );
if (!val) *data = HeapAlloc( GetProcessHeap(), 0, pos * sizeof(int) + count + 1 );
else *data = HeapReAlloc( GetProcessHeap(), 0, val, pos * sizeof(int) + count + 1 );
if (!*data)
{
XFree( buffer );
HeapFree( GetProcessHeap(), 0, val );
return FALSE;
}
val = *data;
memcpy( (int *)val + pos, buffer, count );
XFree( buffer );
if (!remain)
{
*datasize = pos * sizeof(int) + count;
val[*datasize] = 0;
break;
}
pos += count / sizeof(int);
}
TRACE( "got property %s type %s format %u len %lu from window %lx\n",
debugstr_xatom( prop ), debugstr_xatom( *atype ), aformat, *datasize, w );
/* Delete the property on the window now that we are done
* This will send a PropertyNotify event to the selection owner. */
XDeleteProperty(display, w, prop);
return TRUE;
}
struct clipboard_data_packet {
struct list entry;
unsigned long size;
unsigned char *data;
};
/**************************************************************************
* read_property
*
* Reads the contents of the X selection property.
*/
static BOOL read_property( Display *display, Window w, Atom prop,
Atom *type, unsigned char **data, unsigned long *datasize )
{
XEvent xe;
if (prop == None)
return FALSE;
while (XCheckTypedWindowEvent(display, w, PropertyNotify, &xe))
;
if (!X11DRV_CLIPBOARD_GetProperty(display, w, prop, type, data, datasize))
return FALSE;
if (*type == x11drv_atom(INCR))
{
unsigned char *buf;
unsigned long bufsize = 0;
struct list packets;
struct clipboard_data_packet *packet, *packet2;
BOOL res;
HeapFree(GetProcessHeap(), 0, *data);
*data = NULL;
list_init(&packets);
for (;;)
{
int i;
unsigned char *prop_data;
unsigned long prop_size;
/* Wait until PropertyNotify is received */
for (i = 0; i < SELECTION_RETRIES; i++)
{
Bool res;
res = XCheckTypedWindowEvent(display, w, PropertyNotify, &xe);
if (res && xe.xproperty.atom == prop &&
xe.xproperty.state == PropertyNewValue)
break;
usleep(SELECTION_WAIT);
}
if (i >= SELECTION_RETRIES ||
!X11DRV_CLIPBOARD_GetProperty(display, w, prop, type, &prop_data, &prop_size))
{
res = FALSE;
break;
}
/* Retrieved entire data. */
if (prop_size == 0)
{
HeapFree(GetProcessHeap(), 0, prop_data);
res = TRUE;
break;
}
packet = HeapAlloc(GetProcessHeap(), 0, sizeof(*packet));
if (!packet)
{
HeapFree(GetProcessHeap(), 0, prop_data);
res = FALSE;
break;
}
packet->size = prop_size;
packet->data = prop_data;
list_add_tail(&packets, &packet->entry);
bufsize += prop_size;
}
if (res)
{
buf = HeapAlloc(GetProcessHeap(), 0, bufsize + 1);
if (buf)
{
unsigned long bytes_copied = 0;
*datasize = bufsize;
LIST_FOR_EACH_ENTRY( packet, &packets, struct clipboard_data_packet, entry)
{
memcpy(&buf[bytes_copied], packet->data, packet->size);
bytes_copied += packet->size;
}
buf[bufsize] = 0;
*data = buf;
}
else
res = FALSE;
}
LIST_FOR_EACH_ENTRY_SAFE( packet, packet2, &packets, struct clipboard_data_packet, entry)
{
HeapFree(GetProcessHeap(), 0, packet->data);
HeapFree(GetProcessHeap(), 0, packet);
}
return res;
}
return TRUE;
}
/**************************************************************************
* acquire_selection
*
* Acquire the X11 selection when the Win32 clipboard has changed.
*/
static void acquire_selection( Display *display )
{
if (selection_window) XDestroyWindow( display, selection_window );
selection_window = XCreateWindow( display, root_window, 0, 0, 1, 1, 0, CopyFromParent,
InputOutput, CopyFromParent, 0, NULL );
if (!selection_window) return;
XSetSelectionOwner( display, x11drv_atom(CLIPBOARD), selection_window, CurrentTime );
if (use_primary_selection) XSetSelectionOwner( display, XA_PRIMARY, selection_window, CurrentTime );
TRACE( "win %lx\n", selection_window );
}
/**************************************************************************
* release_selection
*
* Release the X11 selection when some other X11 app has grabbed it.
*/
static void release_selection( Display *display, Time time )
{
assert( selection_window );
TRACE( "win %lx\n", selection_window );
/* release PRIMARY if we still own it */
if (use_primary_selection && XGetSelectionOwner( display, XA_PRIMARY ) == selection_window)
XSetSelectionOwner( display, XA_PRIMARY, None, time );
XDestroyWindow( display, selection_window );
selection_window = 0;
}
/**************************************************************************
* request_selection_contents
*
* Retrieve the contents of the X11 selection when it's owned by an X11 app.
*/
static BOOL request_selection_contents( Display *display, BOOL changed )
{
struct clipboard_format *targets = find_x11_format( x11drv_atom(TARGETS) );
struct clipboard_format *string = find_x11_format( XA_STRING );
struct clipboard_format *format = NULL;
Window owner = 0;
unsigned char *data = NULL;
unsigned long size = 0;
Atom type = 0;
static Atom last_selection;
static Window last_owner;
static struct clipboard_format *last_format;
static Atom last_type;
static unsigned char *last_data;
static unsigned long last_size;
assert( targets );
assert( string );
current_selection = 0;
if (use_primary_selection)
{
if ((owner = XGetSelectionOwner( display, XA_PRIMARY )))
current_selection = XA_PRIMARY;
}
if (!current_selection)
{
if ((owner = XGetSelectionOwner( display, x11drv_atom(CLIPBOARD) )))
current_selection = x11drv_atom(CLIPBOARD);
}
if (current_selection)
{
if (convert_selection( display, import_window, current_selection, targets, &type, &data, &size ))
format = targets;
else if (convert_selection( display, import_window, current_selection, string, &type, &data, &size ))
format = string;
}
changed = (changed ||
rendered_formats ||
last_selection != current_selection ||
last_owner != owner ||
last_format != format ||
last_type != type ||
last_size != size ||
memcmp( last_data, data, size ));
if (!changed)
{
HeapFree( GetProcessHeap(), 0, data );
return FALSE;
}
if (!OpenClipboard( clipboard_hwnd )) return FALSE;
TRACE( "selection changed, importing\n" );
EmptyClipboard();
is_clipboard_owner = TRUE;
rendered_formats = 0;
if (format) format->import( type, data, size );
HeapFree( GetProcessHeap(), 0, last_data );
last_selection = current_selection;
last_owner = owner;
last_format = format;
last_type = type;
last_data = data;
last_size = size;
last_clipboard_update = GetTickCount64();
CloseClipboard();
SetTimer( clipboard_hwnd, 1, SELECTION_UPDATE_DELAY, NULL );
return TRUE;
}
/**************************************************************************
* update_clipboard
*
* Periodically update the clipboard while the selection is owned by an X11 app.
*/
BOOL update_clipboard( HWND hwnd )
{
if (hwnd != clipboard_hwnd) return TRUE;
if (!is_clipboard_owner) return TRUE;
if (GetTickCount64() - last_clipboard_update <= SELECTION_UPDATE_DELAY) return TRUE;
return request_selection_contents( thread_display(), FALSE );
}
/**************************************************************************
* clipboard_wndproc
*
* Window procedure for the clipboard manager.
*/
static LRESULT CALLBACK clipboard_wndproc( HWND hwnd, UINT msg, WPARAM wp, LPARAM lp )
{
switch (msg)
{
case WM_NCCREATE:
return TRUE;
case WM_CLIPBOARDUPDATE:
if (is_clipboard_owner) break; /* ignore our own changes */
acquire_selection( thread_init_display() );
break;
case WM_RENDERFORMAT:
if (render_format( wp )) rendered_formats++;
break;
case WM_TIMER:
if (!is_clipboard_owner) break;
request_selection_contents( thread_display(), FALSE );
break;
case WM_DESTROYCLIPBOARD:
TRACE( "WM_DESTROYCLIPBOARD: lost ownership\n" );
is_clipboard_owner = FALSE;
KillTimer( hwnd, 1 );
break;
}
return DefWindowProcW( hwnd, msg, wp, lp );
}
/**************************************************************************
* wait_clipboard_mutex
*
* Make sure that there's only one clipboard thread per window station.
*/
static BOOL wait_clipboard_mutex(void)
{
static const WCHAR prefix[] = {'_','_','w','i','n','e','_','c','l','i','p','b','o','a','r','d','_'};
WCHAR buffer[MAX_PATH + sizeof(prefix) / sizeof(WCHAR)];
HANDLE mutex;
memcpy( buffer, prefix, sizeof(prefix) );
if (!GetUserObjectInformationW( GetProcessWindowStation(), UOI_NAME,
buffer + sizeof(prefix) / sizeof(WCHAR),
sizeof(buffer) - sizeof(prefix), NULL ))
{
ERR( "failed to get winstation name\n" );
return FALSE;
}
mutex = CreateMutexW( NULL, TRUE, buffer );
if (GetLastError() == ERROR_ALREADY_EXISTS)
{
TRACE( "waiting for mutex %s\n", debugstr_w( buffer ));
WaitForSingleObject( mutex, INFINITE );
}
return TRUE;
}
/**************************************************************************
* clipboard_thread
*
* Thread running inside the desktop process to manage the clipboard
*/
static DWORD WINAPI clipboard_thread( void *arg )
{
static const WCHAR clipboard_classname[] = {'_','_','w','i','n','e','_','c','l','i','p','b','o','a','r','d','_','m','a','n','a','g','e','r',0};
XSetWindowAttributes attr;
WNDCLASSW class;
MSG msg;
if (!wait_clipboard_mutex()) return 0;
clipboard_display = thread_init_display();
attr.event_mask = PropertyChangeMask;
import_window = XCreateWindow( clipboard_display, root_window, 0, 0, 1, 1, 0, CopyFromParent,
InputOutput, CopyFromParent, CWEventMask, &attr );
if (!import_window)
{
ERR( "failed to create import window\n" );
return 0;
}
memset( &class, 0, sizeof(class) );
class.lpfnWndProc = clipboard_wndproc;
class.lpszClassName = clipboard_classname;
if (!RegisterClassW( &class ) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
{
ERR( "could not register clipboard window class err %u\n", GetLastError() );
return 0;
}
if (!(clipboard_hwnd = CreateWindowW( clipboard_classname, NULL, 0, 0, 0, 0, 0,
HWND_MESSAGE, 0, 0, NULL )))
{
ERR( "failed to create clipboard window err %u\n", GetLastError() );
return 0;
}
clipboard_thread_id = GetCurrentThreadId();
AddClipboardFormatListener( clipboard_hwnd );
register_builtin_formats();
request_selection_contents( clipboard_display, TRUE );
TRACE( "clipboard thread %04x running\n", GetCurrentThreadId() );
while (GetMessageW( &msg, 0, 0, 0 )) DispatchMessageW( &msg );
return 0;
}
/**************************************************************************
* X11DRV_UpdateClipboard
*/
void CDECL X11DRV_UpdateClipboard(void)
{
static ULONG last_update;
ULONG now;
DWORD_PTR ret;
if (GetCurrentThreadId() == clipboard_thread_id) return;
now = GetTickCount();
if ((int)(now - last_update) <= SELECTION_UPDATE_DELAY) return;
if (SendMessageTimeoutW( GetClipboardOwner(), WM_X11DRV_UPDATE_CLIPBOARD, 0, 0,
SMTO_ABORTIFHUNG, 5000, &ret ) && ret)
last_update = now;
}
/***********************************************************************
* X11DRV_HandleSelectionRequest
*/
BOOL X11DRV_SelectionRequest( HWND hwnd, XEvent *xev )
{
XSelectionRequestEvent *event = &xev->xselectionrequest;
Display *display = event->display;
XEvent result;
Atom rprop = None;
TRACE( "got request on %lx for selection %s target %s win %lx prop %s\n",
event->owner, debugstr_xatom( event->selection ), debugstr_xatom( event->target ),
event->requestor, debugstr_xatom( event->property ));
if (event->owner != selection_window) goto done;
if ((event->selection != x11drv_atom(CLIPBOARD)) &&
(!use_primary_selection || event->selection != XA_PRIMARY)) goto done;
/* If the specified property is None the requestor is an obsolete client.
* We support these by using the specified target atom as the reply property.
*/
rprop = event->property;
if( rprop == None )
rprop = event->target;
if (!export_selection( display, event->requestor, rprop, event->target ))
rprop = None; /* report failure to client */
done:
result.xselection.type = SelectionNotify;
result.xselection.display = display;
result.xselection.requestor = event->requestor;
result.xselection.selection = event->selection;
result.xselection.property = rprop;
result.xselection.target = event->target;
result.xselection.time = event->time;
TRACE( "sending SelectionNotify for %s to %lx\n", debugstr_xatom( rprop ), event->requestor );
XSendEvent( display, event->requestor, False, NoEventMask, &result );
return FALSE;
}
/***********************************************************************
* X11DRV_SelectionClear
*/
BOOL X11DRV_SelectionClear( HWND hwnd, XEvent *xev )
{
XSelectionClearEvent *event = &xev->xselectionclear;
if (event->window != selection_window) return FALSE;
if (event->selection != x11drv_atom(CLIPBOARD)) return FALSE;
release_selection( event->display, event->time );
request_selection_contents( event->display, TRUE );
return FALSE;
}
/**************************************************************************
* X11DRV_InitClipboard
*/
void X11DRV_InitClipboard(void)
{
DWORD id;
HANDLE handle = CreateThread( NULL, 0, clipboard_thread, NULL, 0, &id );
if (handle) CloseHandle( handle );
else ERR( "failed to create clipboard thread\n" );
}
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