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Sweden-Number/windows/x11drv/clipboard.c

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/*
* X11 clipboard windows driver
*
* Copyright 1994 Martin Ayotte
* 1996 Alex Korobka
* 1999 Noel Borthwick
*
* 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.
*
*/
#include "ts_xlib.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include "winreg.h"
#include "clipboard.h"
#include "win.h"
#include "x11drv.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(clipboard);
/* Selection masks */
#define S_NOSELECTION 0
#define S_PRIMARY 1
#define S_CLIPBOARD 2
/* X selection context info */
static char _CLIPBOARD[] = "CLIPBOARD"; /* CLIPBOARD atom name */
static char FMT_PREFIX[] = "<WCF>"; /* Prefix for windows specific formats */
static int selectionAcquired = 0; /* Contains the current selection masks */
static Window selectionWindow = None; /* The top level X window which owns the selection */
static Window selectionPrevWindow = None; /* The last X window that owned the selection */
static Window PrimarySelectionOwner = None; /* The window which owns the primary selection */
static Window ClipboardSelectionOwner = None; /* The window which owns the clipboard selection */
static unsigned long cSelectionTargets = 0; /* Number of target formats reported by TARGETS selection */
static Atom selectionCacheSrc = XA_PRIMARY; /* The selection source from which the clipboard cache was filled */
static HANDLE selectionClearEvent = 0;/* Synchronization object used to block until server is started */
typedef struct tagPROPERTY
{
struct tagPROPERTY *next;
Atom atom;
Pixmap pixmap;
} PROPERTY;
static PROPERTY *prop_head;
/**************************************************************************
* X11DRV_CLIPBOARD_MapPropertyToFormat
*
* Map an X selection property type atom name to a windows clipboard format ID
*/
UINT X11DRV_CLIPBOARD_MapPropertyToFormat(char *itemFmtName)
{
/*
* If the property name starts with FMT_PREFIX strip this off and
* get the ID for a custom Windows registered format with this name.
* We can also understand STRING, PIXMAP and BITMAP.
*/
if ( NULL == itemFmtName )
return 0;
else if ( 0 == strncmp(itemFmtName, FMT_PREFIX, strlen(FMT_PREFIX)) )
return RegisterClipboardFormatA(itemFmtName + strlen(FMT_PREFIX));
else if ( 0 == strcmp(itemFmtName, "STRING") )
return CF_UNICODETEXT;
else if ( 0 == strcmp(itemFmtName, "PIXMAP")
|| 0 == strcmp(itemFmtName, "BITMAP") )
{
/*
* Return CF_DIB as first preference, if WINE is the selection owner
* and if CF_DIB exists in the cache.
* If wine dowsn't own the selection we always return CF_DIB
*/
if ( !X11DRV_IsSelectionOwner() )
return CF_DIB;
else if ( CLIPBOARD_IsPresent(CF_DIB) )
return CF_DIB;
else
return CF_BITMAP;
}
WARN("\tNo mapping to Windows clipboard format for property %s\n", itemFmtName);
return 0;
}
/**************************************************************************
* X11DRV_CLIPBOARD_MapFormatToProperty
*
* Map a windows clipboard format ID to an X selection property atom
*/
Atom X11DRV_CLIPBOARD_MapFormatToProperty(UINT wFormat)
{
Atom prop = None;
switch (wFormat)
{
/* We support only CF_UNICODETEXT, other formats are synthesized */
case CF_OEMTEXT:
case CF_TEXT:
return None;
case CF_UNICODETEXT:
prop = XA_STRING;
break;
case CF_DIB:
case CF_BITMAP:
{
/*
* Request a PIXMAP, only if WINE is NOT the selection owner,
* AND the requested format is not in the cache.
*/
if ( !X11DRV_IsSelectionOwner() && !CLIPBOARD_IsPresent(wFormat) )
{
prop = XA_PIXMAP;
break;
}
/* Fall through to the default case in order to use the native format */
}
default:
{
/*
* If an X atom is registered for this format, return that
* Otherwise register a new atom.
*/
char str[256];
char *fmtName = CLIPBOARD_GetFormatName(wFormat);
strcpy(str, FMT_PREFIX);
if (fmtName)
{
strncat(str, fmtName, sizeof(str) - strlen(FMT_PREFIX));
prop = TSXInternAtom(thread_display(), str, False);
}
break;
}
}
if (prop == None)
TRACE("\tNo mapping to X property for Windows clipboard format %d(%s)\n",
wFormat, CLIPBOARD_GetFormatName(wFormat));
return prop;
}
/**************************************************************************
* X11DRV_CLIPBOARD_IsNativeProperty
*
* Checks if a property is a native Wine property type
*/
BOOL X11DRV_CLIPBOARD_IsNativeProperty(Atom prop)
{
char *itemFmtName = TSXGetAtomName(thread_display(), prop);
BOOL bRet = FALSE;
if ( 0 == strncmp(itemFmtName, FMT_PREFIX, strlen(FMT_PREFIX)) )
bRet = TRUE;
TSXFree(itemFmtName);
return bRet;
}
/**************************************************************************
* X11DRV_CLIPBOARD_LaunchServer
* Launches the clipboard server. This is called from X11DRV_CLIPBOARD_ResetOwner
* when the selection can no longer be recyled to another top level window.
* In order to make the selection persist after Wine shuts down a server
* process is launched which services subsequent selection requests.
*/
BOOL X11DRV_CLIPBOARD_LaunchServer()
{
int iWndsLocks;
char clearSelection[8] = "0";
int persistent_selection = 1;
HKEY hkey;
/* If persistant selection has been disabled in the .winerc Clipboard section,
* don't launch the server
*/
if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\Clipboard", &hkey))
{
char buffer[20];
DWORD type, count = sizeof(buffer);
if(!RegQueryValueExA(hkey, "PersistentSelection", 0, &type, buffer, &count))
persistent_selection = atoi(buffer);
/* Get the clear selection preference */
count = sizeof(clearSelection);
RegQueryValueExA(hkey, "ClearAllSelections", 0, &type, clearSelection, &count);
RegCloseKey(hkey);
}
if ( !persistent_selection )
return FALSE;
/* Start up persistant WINE X clipboard server process which will
* take ownership of the X selection and continue to service selection
* requests from other apps.
*/
selectionWindow = selectionPrevWindow;
if ( !fork() )
{
/* NOTE: This code only executes in the context of the child process
* Do note make any Wine specific calls here.
*/
int dbgClasses = 0;
char selMask[8], dbgClassMask[8];
sprintf(selMask, "%d", selectionAcquired);
/* Build the debug class mask to pass to the server, by inheriting
* the settings for the clipboard debug channel.
*/
dbgClasses |= FIXME_ON(clipboard) ? 1 : 0;
dbgClasses |= ERR_ON(clipboard) ? 2 : 0;
dbgClasses |= WARN_ON(clipboard) ? 4 : 0;
dbgClasses |= TRACE_ON(clipboard) ? 8 : 0;
sprintf(dbgClassMask, "%d", dbgClasses);
/* Exec the clipboard server passing it the selection and debug class masks */
execl( BINDIR "/wineclipsrv", "wineclipsrv",
selMask, dbgClassMask, clearSelection, NULL );
execlp( "wineclipsrv", "wineclipsrv", selMask, dbgClassMask, clearSelection, NULL );
execl( "./windows/x11drv/wineclipsrv", "wineclipsrv",
selMask, dbgClassMask, clearSelection, NULL );
/* Exec Failed! */
perror("Could not start Wine clipboard server");
exit( 1 ); /* Exit the child process */
}
/* Wait until the clipboard server acquires the selection.
* We must release the windows lock to enable Wine to process
* selection messages in response to the servers requests.
*/
iWndsLocks = WIN_SuspendWndsLock();
/* We must wait until the server finishes acquiring the selection,
* before proceeding, otherwise the window which owns the selection
* will be destroyed prematurely!
* Create a non-signalled, auto-reset event which will be set by
* X11DRV_CLIPBOARD_ReleaseSelection, and wait until this gets
* signalled before proceeding.
*/
if ( !(selectionClearEvent = CreateEventA(NULL, FALSE, FALSE, NULL)) )
ERR("Could not create wait object. Clipboard server won't start!\n");
else
{
/* Wait until we lose the selection, timing out after a minute */
DWORD start_time, timeout, elapsed, ret;
TRACE("Waiting for clipboard server to acquire selection\n");
timeout = 60000;
start_time = GetTickCount();
elapsed=0;
do
{
ret = MsgWaitForMultipleObjects( 1, &selectionClearEvent, FALSE, timeout - elapsed, QS_ALLINPUT );
if (ret != WAIT_OBJECT_0+1)
break;
elapsed = GetTickCount() - start_time;
if (elapsed > timeout)
break;
}
while (1);
if ( ret != WAIT_OBJECT_0 )
TRACE("Server could not acquire selection, or a timeout occurred!\n");
else
TRACE("Server successfully acquired selection\n");
/* Release the event */
CloseHandle(selectionClearEvent);
selectionClearEvent = 0;
}
WIN_RestoreWndsLock(iWndsLocks);
return TRUE;
}
/**************************************************************************
* X11DRV_CLIPBOARD_CacheDataFormats
*
* Caches the list of data formats available from the current selection.
* This queries the selection owner for the TARGETS property and saves all
* reported property types.
*/
int X11DRV_CLIPBOARD_CacheDataFormats( Atom SelectionName )
{
Display *display = thread_display();
HWND hWnd = 0;
HWND hWndClipWindow = GetOpenClipboardWindow();
XEvent xe;
Atom aTargets;
Atom atype=AnyPropertyType;
int aformat;
unsigned long remain;
Atom* targetList=NULL;
Window w;
Window ownerSelection = 0;
TRACE("enter\n");
/*
* Empty the clipboard cache
*/
CLIPBOARD_EmptyCache(TRUE);
cSelectionTargets = 0;
selectionCacheSrc = SelectionName;
hWnd = (hWndClipWindow) ? hWndClipWindow : GetActiveWindow();
ownerSelection = TSXGetSelectionOwner(display, SelectionName);
if ( !hWnd || (ownerSelection == None) )
return cSelectionTargets;
/*
* Query the selection owner for the TARGETS property
*/
w = X11DRV_get_whole_window( GetAncestor(hWnd,GA_ROOT) );
aTargets = TSXInternAtom(display, "TARGETS", False);
TRACE("Requesting TARGETS selection for '%s' (owner=%08x)...\n",
TSXGetAtomName(display, selectionCacheSrc), (unsigned)ownerSelection );
wine_tsx11_lock();
XConvertSelection(display, selectionCacheSrc, aTargets,
TSXInternAtom(display, "SELECTION_DATA", False),
w, CurrentTime);
/*
* Wait until SelectionNotify is received
*/
while( TRUE )
{
if( XCheckTypedWindowEvent(display, w, SelectionNotify, &xe) )
if( xe.xselection.selection == selectionCacheSrc )
break;
}
wine_tsx11_unlock();
/* Verify that the selection returned a valid TARGETS property */
if ( (xe.xselection.target != aTargets)
|| (xe.xselection.property == None) )
{
TRACE("\tExit, could not retrieve TARGETS\n");
return cSelectionTargets;
}
/* Read the TARGETS property contents */
if(TSXGetWindowProperty(display, xe.xselection.requestor, xe.xselection.property,
0, 0x3FFF, True, AnyPropertyType/*XA_ATOM*/, &atype, &aformat,
&cSelectionTargets, &remain, (unsigned char**)&targetList) != Success)
TRACE("\tCouldn't read TARGETS property\n");
else
{
TRACE("\tType %s,Format %d,nItems %ld, Remain %ld\n",
TSXGetAtomName(display,atype),aformat,cSelectionTargets, remain);
/*
* The TARGETS property should have returned us a list of atoms
* corresponding to each selection target format supported.
*/
if( (atype == XA_ATOM || atype == aTargets) && aformat == 32 )
{
int i;
LPWINE_CLIPFORMAT lpFormat;
/* Cache these formats in the clipboard cache */
for (i = 0; i < cSelectionTargets; i++)
{
char *itemFmtName = TSXGetAtomName(display, targetList[i]);
UINT wFormat = X11DRV_CLIPBOARD_MapPropertyToFormat(itemFmtName);
/*
* If the clipboard format maps to a Windows format, simply store
* the atom identifier and record its availablity status
* in the clipboard cache.
*/
if (wFormat)
{
lpFormat = CLIPBOARD_LookupFormat( wFormat );
/* Don't replace if the property already cached is a native format,
* or if a PIXMAP is being replaced by a BITMAP.
*/
if (lpFormat->wDataPresent &&
( X11DRV_CLIPBOARD_IsNativeProperty(lpFormat->drvData)
|| (lpFormat->drvData == XA_PIXMAP && targetList[i] == XA_BITMAP) )
)
{
TRACE("\tAtom# %d: '%s' --> FormatID(%d) %s (Skipped)\n",
i, itemFmtName, wFormat, lpFormat->Name);
}
else
{
lpFormat->wDataPresent = 1;
lpFormat->drvData = targetList[i];
TRACE("\tAtom# %d: '%s' --> FormatID(%d) %s\n",
i, itemFmtName, wFormat, lpFormat->Name);
}
}
TSXFree(itemFmtName);
}
}
/* Free the list of targets */
TSXFree(targetList);
}
return cSelectionTargets;
}
/**************************************************************************
* X11DRV_CLIPBOARD_ReadSelection
* Reads the contents of the X selection property into the WINE clipboard cache
* converting the selection into a format compatible with the windows clipboard
* if possible.
* This method is invoked only to read the contents of a the selection owned
* by an external application. i.e. when we do not own the X selection.
*/
static BOOL X11DRV_CLIPBOARD_ReadSelection(UINT wFormat, Window w, Atom prop, Atom reqType)
{
Display *display = thread_display();
Atom atype=AnyPropertyType;
int aformat;
unsigned long total,nitems,remain,itemSize,val_cnt;
long lRequestLength,bwc;
unsigned char* val;
unsigned char* buffer;
LPWINE_CLIPFORMAT lpFormat;
BOOL bRet = FALSE;
HWND hWndClipWindow = GetOpenClipboardWindow();
if(prop == None)
return bRet;
TRACE("Reading X selection...\n");
TRACE("\tretrieving property %s from window %ld into %s\n",
TSXGetAtomName(display,reqType), (long)w, TSXGetAtomName(display,prop) );
/*
* First request a zero length in order to figure out the request size.
*/
if(TSXGetWindowProperty(display,w,prop,0,0,False, AnyPropertyType/*reqType*/,
&atype, &aformat, &nitems, &itemSize, &val) != Success)
{
WARN("\tcouldn't get property size\n");
return bRet;
}
/* Free zero length return data if any */
if ( val )
{
TSXFree(val);
val = NULL;
}
TRACE("\tretrieving %ld bytes...\n", itemSize * aformat/8);
lRequestLength = (itemSize * aformat/8)/4 + 1;
bwc = aformat/8;
/* we want to read the property, but not it too large of chunks or
we could hang the cause problems. Lets go for 4k blocks */
if(TSXGetWindowProperty(display,w,prop,0,4096,False,
AnyPropertyType/*reqType*/,
&atype, &aformat, &nitems, &remain, &buffer)
!= Success)
{
WARN("\tcouldn't read property\n");
return bRet;
}
val = (char*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,
nitems*bwc);
memcpy(val,buffer,nitems*bwc);
TSXFree(buffer);
for (total = nitems*bwc,val_cnt=0; remain;)
{
val_cnt +=nitems*bwc;
TSXGetWindowProperty(display, w, prop,
(total / 4), 4096, False,
AnyPropertyType, &atype,
&aformat, &nitems, &remain,
&buffer);
total += nitems*bwc;
HeapReAlloc(GetProcessHeap(),0,val, total);
memcpy(&val[val_cnt], buffer, nitems*(aformat/8));
TSXFree(buffer);
}
nitems = total;
/*
* Translate the X property into the appropriate Windows clipboard
* format, if possible.
*/
if ( (reqType == XA_STRING)
&& (atype == XA_STRING) && (aformat == 8) )
/* convert Unix text to CF_UNICODETEXT */
{
int i,inlcount = 0;
char* lpstr;
for(i=0; i <= nitems; i++)
if( val[i] == '\n' ) inlcount++;
if( (lpstr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, nitems + inlcount + 1)) )
{
static UINT text_cp = (UINT)-1;
UINT count;
HANDLE hUnicodeText;
for(i=0,inlcount=0; i <= nitems; i++)
{
if( val[i] == '\n' ) lpstr[inlcount++]='\r';
lpstr[inlcount++]=val[i];
}
if(text_cp == (UINT)-1)
{
HKEY hkey;
/* default value */
text_cp = CP_ACP;
if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\x11drv", &hkey))
{
char buf[20];
DWORD type, count = sizeof(buf);
if(!RegQueryValueExA(hkey, "TextCP", 0, &type, buf, &count))
text_cp = atoi(buf);
RegCloseKey(hkey);
}
}
count = MultiByteToWideChar(text_cp, 0, lpstr, -1, NULL, 0);
hUnicodeText = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, count * sizeof(WCHAR));
if(hUnicodeText)
{
WCHAR *textW = GlobalLock(hUnicodeText);
MultiByteToWideChar(text_cp, 0, lpstr, -1, textW, count);
GlobalUnlock(hUnicodeText);
if (!SetClipboardData(CF_UNICODETEXT, hUnicodeText))
{
ERR("Not SET! Need to free our own block\n");
GlobalFree(hUnicodeText);
}
bRet = TRUE;
}
HeapFree(GetProcessHeap(), 0, lpstr);
}
}
else if ( reqType == XA_PIXMAP || reqType == XA_BITMAP ) /* treat PIXMAP as CF_DIB or CF_BITMAP */
{
/* Get the first pixmap handle passed to us */
Pixmap *pPixmap = (Pixmap *)val;
HANDLE hTargetImage = 0; /* Handle to store the converted bitmap or DIB */
if (aformat != 32 || nitems < 1 || atype != XA_PIXMAP
|| (wFormat != CF_BITMAP && wFormat != CF_DIB))
{
WARN("\tUnimplemented format conversion request\n");
goto END;
}
if ( wFormat == CF_BITMAP )
{
/* For CF_BITMAP requests we must return an HBITMAP */
hTargetImage = X11DRV_BITMAP_CreateBitmapFromPixmap(*pPixmap, TRUE);
}
else if (wFormat == CF_DIB)
{
HWND hwnd = GetOpenClipboardWindow();
HDC hdc = GetDC(hwnd);
/* For CF_DIB requests we must return an HGLOBAL storing a packed DIB */
hTargetImage = X11DRV_DIB_CreateDIBFromPixmap(*pPixmap, hdc, TRUE);
ReleaseDC(hwnd, hdc);
}
if (!hTargetImage)
{
WARN("PIXMAP conversion failed!\n" );
goto END;
}
/* Delete previous clipboard data */
lpFormat = CLIPBOARD_LookupFormat(wFormat);
if (lpFormat->wDataPresent && (lpFormat->hData16 || lpFormat->hData32))
CLIPBOARD_DeleteRecord(lpFormat, !(hWndClipWindow));
/* Update the clipboard record */
lpFormat->wDataPresent = 1;
lpFormat->hData32 = hTargetImage;
lpFormat->hData16 = 0;
bRet = TRUE;
}
/* For native properties simply copy the X data without conversion */
else if (X11DRV_CLIPBOARD_IsNativeProperty(reqType)) /* <WCF>* */
{
HANDLE hClipData = 0;
void* lpClipData;
int cBytes = nitems * aformat/8;
if( cBytes )
{
/* Turn on the DDESHARE flag to enable shared 32 bit memory */
hClipData = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cBytes );
if( (lpClipData = GlobalLock(hClipData)) )
{
memcpy(lpClipData, val, cBytes);
GlobalUnlock(hClipData);
}
else
hClipData = 0;
}
if( hClipData )
{
/* delete previous clipboard record if any */
lpFormat = CLIPBOARD_LookupFormat(wFormat);
if (lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32)
CLIPBOARD_DeleteRecord(lpFormat, !(hWndClipWindow));
/* Update the clipboard record */
lpFormat->wDataPresent = 1;
lpFormat->hData32 = hClipData;
lpFormat->hData16 = 0;
bRet = TRUE;
}
}
else
{
WARN("\tUnimplemented format conversion request\n");
goto END;
}
END:
/* Delete the property on the window now that we are done
* This will send a PropertyNotify event to the selection owner. */
TSXDeleteProperty(display,w,prop);
/* Free the retrieved property data */
HeapFree(GetProcessHeap(),0,val);
return bRet;
}
/**************************************************************************
* X11DRV_CLIPBOARD_ReleaseSelection
*
* Release an XA_PRIMARY or XA_CLIPBOARD selection that we own, in response
* to a SelectionClear event.
* This can occur in response to another client grabbing the X selection.
* If the XA_CLIPBOARD selection is lost, we relinquish XA_PRIMARY as well.
*/
void X11DRV_CLIPBOARD_ReleaseSelection(Atom selType, Window w, HWND hwnd)
{
Display *display = thread_display();
Atom xaClipboard = TSXInternAtom(display, "CLIPBOARD", False);
int clearAllSelections = 0;
HKEY hkey;
if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\Clipboard", &hkey))
{
char buffer[20];
DWORD type, count = sizeof(buffer);
if(!RegQueryValueExA(hkey, "ClearAllSelections", 0, &type, buffer, &count))
clearAllSelections = atoi(buffer);
RegCloseKey(hkey);
}
/* w is the window that lost the selection
* selectionPrevWindow is nonzero if CheckSelection() was called.
*/
TRACE("\tevent->window = %08x (sw = %08x, spw=%08x)\n",
(unsigned)w, (unsigned)selectionWindow, (unsigned)selectionPrevWindow );
if( selectionAcquired )
{
if( w == selectionWindow || selectionPrevWindow == None)
{
/* If we're losing the CLIPBOARD selection, or if the preferences in .winerc
* dictate that *all* selections should be cleared on loss of a selection,
* we must give up all the selections we own.
*/
if ( clearAllSelections || (selType == xaClipboard) )
{
/* completely give up the selection */
TRACE("Lost CLIPBOARD (+PRIMARY) selection\n");
/* We are completely giving up the selection.
* Make sure we can open the windows clipboard first. */
if ( !OpenClipboard(hwnd) )
{
/*
* We can't empty the clipboard if we cant open it so abandon.
* Wine will think that it still owns the selection but this is
* safer than losing the selection without properly emptying
* the clipboard. Perhaps we should forcibly re-assert ownership
* of the CLIPBOARD selection in this case...
*/
ERR("\tClipboard is busy. Could not give up selection!\n");
return;
}
/* We really lost CLIPBOARD but want to voluntarily lose PRIMARY */
if ( (selType == xaClipboard)
&& (selectionAcquired & S_PRIMARY) )
{
XSetSelectionOwner(display, XA_PRIMARY, None, CurrentTime);
}
/* We really lost PRIMARY but want to voluntarily lose CLIPBOARD */
if ( (selType == XA_PRIMARY)
&& (selectionAcquired & S_CLIPBOARD) )
{
XSetSelectionOwner(display, xaClipboard, None, CurrentTime);
}
selectionWindow = None;
PrimarySelectionOwner = ClipboardSelectionOwner = 0;
/* Empty the windows clipboard.
* We should pretend that we still own the selection BEFORE calling
* EmptyClipboard() since otherwise this has the side effect of
* triggering X11DRV_CLIPBOARD_Acquire() and causing the X selection
* to be re-acquired by us!
*/
selectionAcquired = (S_PRIMARY | S_CLIPBOARD);
EmptyClipboard();
CloseClipboard();
/* Give up ownership of the windows clipboard */
CLIPBOARD_ReleaseOwner();
/* Reset the selection flags now that we are done */
selectionAcquired = S_NOSELECTION;
}
else if ( selType == XA_PRIMARY ) /* Give up only PRIMARY selection */
{
TRACE("Lost PRIMARY selection\n");
PrimarySelectionOwner = 0;
selectionAcquired &= ~S_PRIMARY; /* clear S_PRIMARY mask */
}
cSelectionTargets = 0;
}
/* but we'll keep existing data for internal use */
else if( w == selectionPrevWindow )
{
Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
w = TSXGetSelectionOwner(display, XA_PRIMARY);
if( w == None )
TSXSetSelectionOwner(display, XA_PRIMARY, selectionWindow, CurrentTime);
w = TSXGetSelectionOwner(display, xaClipboard);
if( w == None )
TSXSetSelectionOwner(display, xaClipboard, selectionWindow, CurrentTime);
}
}
/* Signal to a selectionClearEvent listener if the selection is completely lost */
if (selectionClearEvent && !selectionAcquired)
{
TRACE("Lost all selections, signalling to selectionClearEvent listener\n");
SetEvent(selectionClearEvent);
}
selectionPrevWindow = None;
}
/**************************************************************************
* ReleaseClipboard (X11DRV.@)
* Voluntarily release all currently owned X selections
*/
void X11DRV_ReleaseClipboard(void)
{
Display *display = thread_display();
if( selectionAcquired )
{
XEvent xe;
Window savePrevWindow = selectionWindow;
Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
BOOL bHasPrimarySelection = selectionAcquired & S_PRIMARY;
selectionAcquired = S_NOSELECTION;
selectionPrevWindow = selectionWindow;
selectionWindow = None;
TRACE("\tgiving up selection (spw = %08x)\n",
(unsigned)selectionPrevWindow);
wine_tsx11_lock();
TRACE("Releasing CLIPBOARD selection\n");
XSetSelectionOwner(display, xaClipboard, None, CurrentTime);
if( selectionPrevWindow )
while( !XCheckTypedWindowEvent( display, selectionPrevWindow,
SelectionClear, &xe ) );
if ( bHasPrimarySelection )
{
TRACE("Releasing XA_PRIMARY selection\n");
selectionPrevWindow = savePrevWindow; /* May be cleared in X11DRV_CLIPBOARD_ReleaseSelection */
XSetSelectionOwner(display, XA_PRIMARY, None, CurrentTime);
if( selectionPrevWindow )
while( !XCheckTypedWindowEvent( display, selectionPrevWindow,
SelectionClear, &xe ) );
}
wine_tsx11_unlock();
}
/* Get rid of any Pixmap resources we may still have */
while (prop_head)
{
PROPERTY *prop = prop_head;
prop_head = prop->next;
XFreePixmap( gdi_display, prop->pixmap );
HeapFree( GetProcessHeap(), 0, prop );
}
}
/**************************************************************************
* AcquireClipboard (X11DRV.@)
*/
void X11DRV_AcquireClipboard(void)
{
Display *display = thread_display();
Window owner;
HWND hWndClipWindow = GetOpenClipboardWindow();
/*
* Acquire X selection if we don't already own it.
* Note that we only acquire the selection if it hasn't been already
* acquired by us, and ignore the fact that another X window may be
* asserting ownership. The reason for this is we need *any* top level
* X window to hold selection ownership. The actual clipboard data requests
* are made via GetClipboardData from EVENT_SelectionRequest and this
* ensures that the real HWND owner services the request.
* If the owning X window gets destroyed the selection ownership is
* re-cycled to another top level X window in X11DRV_CLIPBOARD_ResetOwner.
*
*/
if ( !(selectionAcquired == (S_PRIMARY | S_CLIPBOARD)) )
{
Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
owner = X11DRV_get_whole_window( GetAncestor( hWndClipWindow ? hWndClipWindow : AnyPopup(),
GA_ROOT ) );
/* Grab PRIMARY selection if not owned */
if ( !(selectionAcquired & S_PRIMARY) )
TSXSetSelectionOwner(display, XA_PRIMARY, owner, CurrentTime);
/* Grab CLIPBOARD selection if not owned */
if ( !(selectionAcquired & S_CLIPBOARD) )
TSXSetSelectionOwner(display, xaClipboard, owner, CurrentTime);
if( TSXGetSelectionOwner(display,XA_PRIMARY) == owner )
selectionAcquired |= S_PRIMARY;
if( TSXGetSelectionOwner(display,xaClipboard) == owner)
selectionAcquired |= S_CLIPBOARD;
if (selectionAcquired)
{
selectionWindow = owner;
TRACE("Grabbed X selection, owner=(%08x)\n", (unsigned) owner);
}
}
}
/**************************************************************************
* IsClipboardFormatAvailable (X11DRV.@)
*
* Checks if the specified format is available in the current selection
* Only invoked when WINE is not the selection owner
*/
BOOL X11DRV_IsClipboardFormatAvailable(UINT wFormat)
{
Display *display = thread_display();
Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
Window ownerPrimary = TSXGetSelectionOwner(display,XA_PRIMARY);
Window ownerClipboard = TSXGetSelectionOwner(display,xaClipboard);
TRACE("enter for %d\n", wFormat);
/*
* If the selection has not been previously cached, or the selection has changed,
* try and cache the list of available selection targets from the current selection.
*/
if ( !cSelectionTargets || (PrimarySelectionOwner != ownerPrimary)
|| (ClipboardSelectionOwner != ownerClipboard) )
{
/*
* First try caching the CLIPBOARD selection.
* If unavailable try PRIMARY.
*/
if ( X11DRV_CLIPBOARD_CacheDataFormats(xaClipboard) == 0 )
{
X11DRV_CLIPBOARD_CacheDataFormats(XA_PRIMARY);
}
ClipboardSelectionOwner = ownerClipboard;
PrimarySelectionOwner = ownerPrimary;
}
/* Exit if there is no selection */
if ( !ownerClipboard && !ownerPrimary )
{
TRACE("There is no selection owner\n");
return FALSE;
}
/* Check if the format is available in the clipboard cache */
if ( CLIPBOARD_IsPresent(wFormat) )
return TRUE;
/*
* Many X client apps (such as XTerminal) don't support being queried
* for the "TARGETS" target atom. To handle such clients we must actually
* try to convert the selection to the requested type.
*/
if ( !cSelectionTargets )
return X11DRV_GetClipboardData( wFormat );
TRACE("There is no selection\n");
return FALSE;
}
/**************************************************************************
* RegisterClipboardFormat (X11DRV.@)
*
* Registers a custom X clipboard format
* Returns: TRUE - success, FALSE - failure
*/
BOOL X11DRV_RegisterClipboardFormat( LPCSTR FormatName )
{
Display *display = thread_display();
Atom prop = None;
char str[256];
/*
* If an X atom is registered for this format, return that
* Otherwise register a new atom.
*/
if (FormatName)
{
/* Add a WINE specific prefix to the format */
strcpy(str, FMT_PREFIX);
strncat(str, FormatName, sizeof(str) - strlen(FMT_PREFIX));
prop = TSXInternAtom(display, str, False);
}
return (prop) ? TRUE : FALSE;
}
/**************************************************************************
* IsSelectionOwner (X11DRV.@)
*
* Returns: TRUE - We(WINE) own the selection, FALSE - Selection not owned by us
*/
BOOL X11DRV_IsSelectionOwner(void)
{
return selectionAcquired;
}
/**************************************************************************
* SetClipboardData (X11DRV.@)
*
* We don't need to do anything special here since the clipboard code
* maintains the cache.
*
*/
void X11DRV_SetClipboardData(UINT wFormat)
{
/* Make sure we have acquired the X selection */
X11DRV_AcquireClipboard();
}
/**************************************************************************
* GetClipboardData (X11DRV.@)
*
* This method is invoked only when we DO NOT own the X selection
*
* NOTE: Clipboard driver get requests only for CF_UNICODETEXT data.
* We always get the data from the selection client each time,
* since we have no way of determining if the data in our cache is stale.
*/
BOOL X11DRV_GetClipboardData(UINT wFormat)
{
Display *display = thread_display();
BOOL bRet = selectionAcquired;
HWND hWndClipWindow = GetOpenClipboardWindow();
HWND hWnd = (hWndClipWindow) ? hWndClipWindow : GetActiveWindow();
LPWINE_CLIPFORMAT lpFormat;
TRACE("%d\n", wFormat);
if (!selectionAcquired)
{
XEvent xe;
Atom propRequest;
Window w = X11DRV_get_whole_window( GetAncestor( hWnd, GA_ROOT ));
if(!w)
{
FIXME("No parent win found %x %x\n", hWnd, hWndClipWindow);
return FALSE;
}
/* Map the format ID requested to an X selection property.
* If the format is in the cache, use the atom associated
* with it.
*/
lpFormat = CLIPBOARD_LookupFormat( wFormat );
if (lpFormat && lpFormat->wDataPresent && lpFormat->drvData)
propRequest = (Atom)lpFormat->drvData;
else
propRequest = X11DRV_CLIPBOARD_MapFormatToProperty(wFormat);
if (propRequest)
{
TRACE("Requesting %s selection from %s...\n",
TSXGetAtomName(display, propRequest),
TSXGetAtomName(display, selectionCacheSrc) );
wine_tsx11_lock();
XConvertSelection(display, selectionCacheSrc, propRequest,
TSXInternAtom(display, "SELECTION_DATA", False),
w, CurrentTime);
/* wait until SelectionNotify is received */
while( TRUE )
{
if( XCheckTypedWindowEvent(display, w, SelectionNotify, &xe) )
if( xe.xselection.selection == selectionCacheSrc )
break;
}
wine_tsx11_unlock();
/*
* Read the contents of the X selection property into WINE's
* clipboard cache converting the selection to be compatible if possible.
*/
bRet = X11DRV_CLIPBOARD_ReadSelection( wFormat,
xe.xselection.requestor,
xe.xselection.property,
xe.xselection.target);
}
else
bRet = FALSE;
TRACE("\tpresent %s = %i\n", CLIPBOARD_GetFormatName(wFormat), bRet );
}
TRACE("Returning %d\n", bRet);
return bRet;
}
/**************************************************************************
* ResetSelectionOwner (X11DRV.@)
*
* Called from DestroyWindow() to prevent X selection from being lost when
* a top level window is destroyed, by switching ownership to another top
* level window.
* Any top level window can own the selection. See X11DRV_CLIPBOARD_Acquire
* for a more detailed description of this.
*/
void X11DRV_ResetSelectionOwner(HWND hwnd, BOOL bFooBar)
{
Display *display = thread_display();
HWND hWndClipOwner = 0;
HWND tmp;
Window XWnd = X11DRV_get_whole_window(hwnd);
Atom xaClipboard;
BOOL bLostSelection = FALSE;
/* There is nothing to do if we don't own the selection,
* or if the X window which currently owns the selecion is different
* from the one passed in.
*/
if ( !selectionAcquired || XWnd != selectionWindow
|| selectionWindow == None )
return;
if ( (bFooBar && XWnd) || (!bFooBar && !XWnd) )
return;
hWndClipOwner = GetClipboardOwner();
xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
TRACE("clipboard owner = %04x, selection window = %08x\n",
hWndClipOwner, (unsigned)selectionWindow);
/* now try to salvage current selection from being destroyed by X */
TRACE("\tchecking %08x\n", (unsigned) XWnd);
selectionPrevWindow = selectionWindow;
selectionWindow = None;
if (!(tmp = GetWindow( hwnd, GW_HWNDNEXT ))) tmp = GetWindow( hwnd, GW_HWNDFIRST );
if (tmp && tmp != hwnd) selectionWindow = X11DRV_get_whole_window(tmp);
if( selectionWindow != None )
{
/* We must pretend that we don't own the selection while making the switch
* since a SelectionClear event will be sent to the last owner.
* If there is no owner X11DRV_CLIPBOARD_ReleaseSelection will do nothing.
*/
int saveSelectionState = selectionAcquired;
selectionAcquired = False;
TRACE("\tswitching selection from %08x to %08x\n",
(unsigned)selectionPrevWindow, (unsigned)selectionWindow);
/* Assume ownership for the PRIMARY and CLIPBOARD selection */
if ( saveSelectionState & S_PRIMARY )
TSXSetSelectionOwner(display, XA_PRIMARY, selectionWindow, CurrentTime);
TSXSetSelectionOwner(display, xaClipboard, selectionWindow, CurrentTime);
/* Restore the selection masks */
selectionAcquired = saveSelectionState;
/* Lose the selection if something went wrong */
if ( ( (saveSelectionState & S_PRIMARY) &&
(TSXGetSelectionOwner(display, XA_PRIMARY) != selectionWindow) )
|| (TSXGetSelectionOwner(display, xaClipboard) != selectionWindow) )
{
bLostSelection = TRUE;
goto END;
}
else
{
/* Update selection state */
if (saveSelectionState & S_PRIMARY)
PrimarySelectionOwner = selectionWindow;
ClipboardSelectionOwner = selectionWindow;
}
}
else
{
bLostSelection = TRUE;
goto END;
}
END:
if (bLostSelection)
{
/* Launch the clipboard server if the selection can no longer be recyled
* to another top level window. */
if ( !X11DRV_CLIPBOARD_LaunchServer() )
{
/* Empty the windows clipboard if the server was not launched.
* We should pretend that we still own the selection BEFORE calling
* EmptyClipboard() since otherwise this has the side effect of
* triggering X11DRV_CLIPBOARD_Acquire() and causing the X selection
* to be re-acquired by us!
*/
TRACE("\tLost the selection! Emptying the clipboard...\n");
OpenClipboard( 0 );
selectionAcquired = (S_PRIMARY | S_CLIPBOARD);
EmptyClipboard();
CloseClipboard();
/* Give up ownership of the windows clipboard */
CLIPBOARD_ReleaseOwner();
}
selectionAcquired = S_NOSELECTION;
ClipboardSelectionOwner = PrimarySelectionOwner = 0;
selectionWindow = 0;
}
}
/**************************************************************************
* X11DRV_CLIPBOARD_RegisterPixmapResource
* Registers a Pixmap resource which is to be associated with a property Atom.
* When the property is destroyed we also destroy the Pixmap through the
* PropertyNotify event.
*/
BOOL X11DRV_CLIPBOARD_RegisterPixmapResource( Atom property, Pixmap pixmap )
{
PROPERTY *prop = HeapAlloc( GetProcessHeap(), 0, sizeof(*prop) );
if (!prop) return FALSE;
prop->atom = property;
prop->pixmap = pixmap;
prop->next = prop_head;
prop_head = prop;
return TRUE;
}
/**************************************************************************
* X11DRV_CLIPBOARD_FreeResources
*
* Called from EVENT_PropertyNotify() to give us a chance to destroy
* any resources associated with this property.
*/
void X11DRV_CLIPBOARD_FreeResources( Atom property )
{
/* Do a simple linear search to see if we have a Pixmap resource
* associated with this property and release it.
*/
PROPERTY **prop = &prop_head;
while (*prop)
{
if ((*prop)->atom == property)
{
PROPERTY *next = (*prop)->next;
XFreePixmap( gdi_display, (*prop)->pixmap );
HeapFree( GetProcessHeap(), 0, *prop );
*prop = next;
}
else prop = &(*prop)->next;
}
}
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