2 * X11 clipboard windows driver
4 * Copyright 1994 Martin Ayotte
9 * This file contains the X specific implementation for the windows
12 * Wine's internal clipboard is exposed to external apps via the X
13 * selection mechanism.
14 * Currently the driver asserts ownership via two selection atoms:
15 * 1. PRIMARY(XA_PRIMARY)
18 * In our implementation, the CLIPBOARD selection takes precedence over PRIMARY.
19 * i.e. if a CLIPBOARD selection is available, it is used instead of PRIMARY.
20 * When Wine taks ownership of the clipboard, it takes ownership of BOTH selections.
21 * While giving up selection ownership, if the CLIPBOARD selection is lost,
22 * it will lose both PRIMARY and CLIPBOARD and empty the clipboard.
23 * However if only PRIMARY is lost, it will continue to hold the CLIPBOARD selection
24 * (leaving the clipboard cache content unaffected).
26 * Every format exposed via a windows clipboard format is also exposed through
27 * a corresponding X selection target. A selection target atom is synthesized
28 * whenever a new Windows clipboard format is registered via RegisterClipboardFormat,
29 * or when a built in format is used for the first time.
30 * Windows native format are exposed by prefixing the format name with "<WCF>"
31 * This allows us to uniquely identify windows native formats exposed by other
34 * In order to allow external applications to query WINE for supported formats,
35 * we respond to the "TARGETS" selection target. (See EVENT_SelectionRequest
36 * for implementation) We use the same mechanism to query external clients for
37 * availability of a particular format, by cacheing the list of available targets
38 * by using the clipboard cache's "delayed render" mechanism. If a selection client
39 * does not support the "TARGETS" selection target, we actually attempt to retrieve
40 * the format requested as a fallback mechanism.
42 * Certain Windows native formats are automatically converted to X native formats
43 * and vice versa. If a native format is available in the selection, it takes
44 * precedence, in order to avoid unnecessary conversions.
55 #include "clipboard.h"
59 #include "debugtools.h"
61 DEFAULT_DEBUG_CHANNEL(clipboard);
65 #define S_NOSELECTION 0
69 /* X selection context info */
71 static char _CLIPBOARD[] = "CLIPBOARD"; /* CLIPBOARD atom name */
72 static char FMT_PREFIX[] = "<WCF>"; /* Prefix for windows specific formats */
73 static int selectionAcquired = 0; /* Contains the current selection masks */
74 static Window selectionWindow = None; /* The top level X window which owns the selection */
75 static Window selectionPrevWindow = None; /* The last X window that owned the selection */
76 static Window PrimarySelectionOwner = None; /* The window which owns the primary selection */
77 static Window ClipboardSelectionOwner = None; /* The window which owns the clipboard selection */
78 static unsigned long cSelectionTargets = 0; /* Number of target formats reported by TARGETS selection */
79 static Atom selectionCacheSrc = XA_PRIMARY; /* The selection source from which the clipboard cache was filled */
80 static HANDLE selectionClearEvent = 0;/* Synchronization object used to block until server is started */
82 typedef struct tagPROPERTY
84 struct tagPROPERTY *next;
89 static PROPERTY *prop_head;
92 /**************************************************************************
93 * X11DRV_CLIPBOARD_MapPropertyToFormat
95 * Map an X selection property type atom name to a windows clipboard format ID
97 UINT X11DRV_CLIPBOARD_MapPropertyToFormat(char *itemFmtName)
100 * If the property name starts with FMT_PREFIX strip this off and
101 * get the ID for a custom Windows registered format with this name.
102 * We can also understand STRING, PIXMAP and BITMAP.
104 if ( NULL == itemFmtName )
106 else if ( 0 == strncmp(itemFmtName, FMT_PREFIX, strlen(FMT_PREFIX)) )
107 return RegisterClipboardFormatA(itemFmtName + strlen(FMT_PREFIX));
108 else if ( 0 == strcmp(itemFmtName, "STRING") )
110 else if ( 0 == strcmp(itemFmtName, "PIXMAP")
111 || 0 == strcmp(itemFmtName, "BITMAP") )
114 * Return CF_DIB as first preference, if WINE is the selection owner
115 * and if CF_DIB exists in the cache.
116 * If wine dowsn't own the selection we always return CF_DIB
118 if ( !X11DRV_IsSelectionOwner() )
120 else if ( CLIPBOARD_IsPresent(CF_DIB) )
126 WARN("\tNo mapping to Windows clipboard format for property %s\n", itemFmtName);
130 /**************************************************************************
131 * X11DRV_CLIPBOARD_MapFormatToProperty
133 * Map a windows clipboard format ID to an X selection property atom
135 Atom X11DRV_CLIPBOARD_MapFormatToProperty(UINT wFormat)
150 * Request a PIXMAP, only if WINE is NOT the selection owner,
151 * AND the requested format is not in the cache.
153 if ( !X11DRV_IsSelectionOwner() && !CLIPBOARD_IsPresent(wFormat) )
158 /* Fall thru to the default case in order to use the native format */
164 * If an X atom is registered for this format, return that
165 * Otherwise register a new atom.
168 char *fmtName = CLIPBOARD_GetFormatName(wFormat);
169 strcpy(str, FMT_PREFIX);
173 strncat(str, fmtName, sizeof(str) - strlen(FMT_PREFIX));
174 prop = TSXInternAtom(display, str, False);
181 TRACE("\tNo mapping to X property for Windows clipboard format %d(%s)\n",
182 wFormat, CLIPBOARD_GetFormatName(wFormat));
187 /**************************************************************************
188 * X11DRV_CLIPBOARD_IsNativeProperty
190 * Checks if a property is a native property type
192 BOOL X11DRV_CLIPBOARD_IsNativeProperty(Atom prop)
194 char *itemFmtName = TSXGetAtomName(display, prop);
197 if ( 0 == strncmp(itemFmtName, FMT_PREFIX, strlen(FMT_PREFIX)) )
200 TSXFree(itemFmtName);
205 /**************************************************************************
206 * X11DRV_CLIPBOARD_LaunchServer
207 * Launches the clipboard server. This is called from X11DRV_CLIPBOARD_ResetOwner
208 * when the selection can no longer be recyled to another top level window.
209 * In order to make the selection persist after Wine shuts down a server
210 * process is launched which services subsequent selection requests.
212 BOOL X11DRV_CLIPBOARD_LaunchServer()
216 /* If persistant selection has been disabled in the .winerc Clipboard section,
217 * don't launch the server
219 if ( !PROFILE_GetWineIniInt("Clipboard", "PersistentSelection", 1) )
222 /* Start up persistant WINE X clipboard server process which will
223 * take ownership of the X selection and continue to service selection
224 * requests from other apps.
226 selectionWindow = selectionPrevWindow;
229 /* NOTE: This code only executes in the context of the child process
230 * Do note make any Wine specific calls here.
234 char selMask[8], dbgClassMask[8], clearSelection[8];
237 /* Don't inherit wine's X sockets to the wineclipsrv, otherwise
238 * windows stay around when you have to kill a hanging wine...
240 for (i = 3; i < 256; ++i)
241 fcntl(i, F_SETFD, 1);
243 sprintf(selMask, "%d", selectionAcquired);
245 /* Build the debug class mask to pass to the server, by inheriting
246 * the settings for the clipboard debug channel.
248 dbgClasses |= FIXME_ON(clipboard) ? 1 : 0;
249 dbgClasses |= ERR_ON(clipboard) ? 2 : 0;
250 dbgClasses |= WARN_ON(clipboard) ? 4 : 0;
251 dbgClasses |= TRACE_ON(clipboard) ? 8 : 0;
252 sprintf(dbgClassMask, "%d", dbgClasses);
254 /* Get the clear selection preference */
255 sprintf(clearSelection, "%d",
256 PROFILE_GetWineIniInt("Clipboard", "ClearAllSelections", 0));
258 /* Exec the clipboard server passing it the selection and debug class masks */
259 execl( BINDIR "/wineclipsrv", "wineclipsrv",
260 selMask, dbgClassMask, clearSelection, NULL );
261 execlp( "wineclipsrv", "wineclipsrv", selMask, dbgClassMask, clearSelection, NULL );
262 execl( "./windows/x11drv/wineclipsrv", "wineclipsrv",
263 selMask, dbgClassMask, clearSelection, NULL );
266 perror("Could not start Wine clipboard server");
267 exit( 1 ); /* Exit the child process */
270 /* Wait until the clipboard server acquires the selection.
271 * We must release the windows lock to enable Wine to process
272 * selection messages in response to the servers requests.
275 iWndsLocks = WIN_SuspendWndsLock();
277 /* We must wait until the server finishes acquiring the selection,
278 * before proceeding, otherwise the window which owns the selection
279 * will be destroyed prematurely!
280 * Create a non-signalled, auto-reset event which will be set by
281 * X11DRV_CLIPBOARD_ReleaseSelection, and wait until this gets
282 * signalled before proceeding.
285 if ( !(selectionClearEvent = CreateEventA(NULL, FALSE, FALSE, NULL)) )
286 ERR("Could not create wait object. Clipboard server won't start!\n");
289 /* Wait until we lose the selection, timing out after a minute */
291 TRACE("Waiting for clipboard server to acquire selection\n");
293 if ( WaitForSingleObject( selectionClearEvent, 60000 ) != WAIT_OBJECT_0 )
294 TRACE("Server could not acquire selection, or a time out occured!\n");
296 TRACE("Server successfully acquired selection\n");
298 /* Release the event */
299 CloseHandle(selectionClearEvent);
300 selectionClearEvent = 0;
303 WIN_RestoreWndsLock(iWndsLocks);
309 /**************************************************************************
310 * X11DRV_CLIPBOARD_CacheDataFormats
312 * Caches the list of data formats available from the current selection.
313 * This queries the selection owner for the TARGETS property and saves all
314 * reported property types.
316 int X11DRV_CLIPBOARD_CacheDataFormats( Atom SelectionName )
319 HWND hWndClipWindow = GetOpenClipboardWindow();
323 Atom atype=AnyPropertyType;
325 unsigned long remain;
326 Atom* targetList=NULL;
328 Window ownerSelection = 0;
331 * Empty the clipboard cache
333 CLIPBOARD_EmptyCache(TRUE);
335 cSelectionTargets = 0;
336 selectionCacheSrc = SelectionName;
338 hWnd = (hWndClipWindow) ? hWndClipWindow : GetActiveWindow();
340 ownerSelection = TSXGetSelectionOwner(display, SelectionName);
341 if ( !hWnd || (ownerSelection == None) )
342 return cSelectionTargets;
345 * Query the selection owner for the TARGETS property
347 wnd = WIN_FindWndPtr(hWnd);
348 w = X11DRV_WND_FindXWindow(wnd);
349 WIN_ReleaseWndPtr(wnd);
352 aTargets = TSXInternAtom(display, "TARGETS", False);
354 TRACE("Requesting TARGETS selection for '%s' (owner=%08x)...\n",
355 TSXGetAtomName(display, selectionCacheSrc), (unsigned)ownerSelection );
357 EnterCriticalSection( &X11DRV_CritSection );
358 XConvertSelection(display, selectionCacheSrc, aTargets,
359 TSXInternAtom(display, "SELECTION_DATA", False),
363 * Wait until SelectionNotify is received
367 if( XCheckTypedWindowEvent(display, w, SelectionNotify, &xe) )
368 if( xe.xselection.selection == selectionCacheSrc )
371 LeaveCriticalSection( &X11DRV_CritSection );
373 /* Verify that the selection returned a valid TARGETS property */
374 if ( (xe.xselection.target != aTargets)
375 || (xe.xselection.property == None) )
377 TRACE("\tCould not retrieve TARGETS\n");
378 return cSelectionTargets;
381 /* Read the TARGETS property contents */
382 if(TSXGetWindowProperty(display, xe.xselection.requestor, xe.xselection.property,
383 0, 0x3FFF, True, AnyPropertyType/*XA_ATOM*/, &atype, &aformat,
384 &cSelectionTargets, &remain, (unsigned char**)&targetList) != Success)
385 TRACE("\tCouldn't read TARGETS property\n");
388 TRACE("\tType %s,Format %d,nItems %ld, Remain %ld\n",
389 TSXGetAtomName(display,atype),aformat,cSelectionTargets, remain);
391 * The TARGETS property should have returned us a list of atoms
392 * corresponding to each selection target format supported.
394 if( (atype == XA_ATOM || atype == aTargets) && aformat == 32 )
397 LPWINE_CLIPFORMAT lpFormat;
399 /* Cache these formats in the clipboard cache */
401 for (i = 0; i < cSelectionTargets; i++)
403 char *itemFmtName = TSXGetAtomName(display, targetList[i]);
404 UINT wFormat = X11DRV_CLIPBOARD_MapPropertyToFormat(itemFmtName);
407 * If the clipboard format maps to a Windows format, simply store
408 * the atom identifier and record its availablity status
409 * in the clipboard cache.
413 lpFormat = CLIPBOARD_LookupFormat( wFormat );
415 /* Don't replace if the property already cached is a native format,
416 * or if a PIXMAP is being replaced by a BITMAP.
418 if (lpFormat->wDataPresent &&
419 ( X11DRV_CLIPBOARD_IsNativeProperty(lpFormat->drvData)
420 || (lpFormat->drvData == XA_PIXMAP && targetList[i] == XA_BITMAP) )
423 TRACE("\tAtom# %d: '%s' --> FormatID(%d) %s (Skipped)\n",
424 i, itemFmtName, wFormat, lpFormat->Name);
428 lpFormat->wDataPresent = 1;
429 lpFormat->drvData = targetList[i];
430 TRACE("\tAtom# %d: '%s' --> FormatID(%d) %s\n",
431 i, itemFmtName, wFormat, lpFormat->Name);
435 TSXFree(itemFmtName);
439 /* Free the list of targets */
443 return cSelectionTargets;
446 /**************************************************************************
447 * X11DRV_CLIPBOARD_ReadSelection
448 * Reads the contents of the X selection property into the WINE clipboard cache
449 * converting the selection into a format compatible with the windows clipboard
451 * This method is invoked only to read the contents of a the selection owned
452 * by an external application. i.e. when we do not own the X selection.
454 static BOOL X11DRV_CLIPBOARD_ReadSelection(UINT wFormat, Window w, Atom prop, Atom reqType)
456 Atom atype=AnyPropertyType;
458 unsigned long nitems,remain,itemSize;
460 unsigned char* val=NULL;
461 LPWINE_CLIPFORMAT lpFormat;
463 HWND hWndClipWindow = GetOpenClipboardWindow();
469 TRACE("Reading X selection...\n");
471 TRACE("\tretrieving property %s from window %ld into %s\n",
472 TSXGetAtomName(display,reqType), (long)w, TSXGetAtomName(display,prop) );
475 * First request a zero length in order to figure out the request size.
477 if(TSXGetWindowProperty(display,w,prop,0,0,False, AnyPropertyType/*reqType*/,
478 &atype, &aformat, &nitems, &itemSize, &val) != Success)
480 WARN("\tcouldn't get property size\n");
484 /* Free zero length return data if any */
491 TRACE("\tretrieving %ld bytes...\n", itemSize * aformat/8);
492 lRequestLength = (itemSize * aformat/8)/4 + 1;
495 * Retrieve the actual property in the required X format.
497 if(TSXGetWindowProperty(display,w,prop,0,lRequestLength,False,AnyPropertyType/*reqType*/,
498 &atype, &aformat, &nitems, &remain, &val) != Success)
500 WARN("\tcouldn't read property\n");
504 TRACE("\tType %s,Format %d,nitems %ld,remain %ld,value %s\n",
505 atype ? TSXGetAtomName(display,atype) : NULL, aformat,nitems,remain,val);
509 WARN("\tCouldn't read entire property- selection may be too large! Remain=%ld\n", remain);
514 * Translate the X property into the appropriate Windows clipboard
515 * format, if possible.
517 if ( (reqType == XA_STRING)
518 && (atype == XA_STRING) && (aformat == 8) ) /* treat Unix text as CF_OEMTEXT */
524 TRACE("\tselection is '%s'\n",val);
526 for(i=0; i <= nitems; i++)
527 if( val[i] == '\n' ) inlcount++;
531 hText=GlobalAlloc16(GMEM_MOVEABLE, nitems + inlcount + 1);
532 if( (lpstr = (char*)GlobalLock16(hText)) )
534 for(i=0,inlcount=0; i <= nitems; i++)
536 if( val[i] == '\n' ) lpstr[inlcount++]='\r';
537 lpstr[inlcount++]=val[i];
539 GlobalUnlock16(hText);
547 /* delete previous CF_TEXT and CF_OEMTEXT data */
548 lpFormat = CLIPBOARD_LookupFormat(CF_TEXT);
549 if (lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32)
550 CLIPBOARD_DeleteRecord(lpFormat, !(hWndClipWindow));
552 lpFormat = CLIPBOARD_LookupFormat(CF_OEMTEXT);
553 if (lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32)
554 CLIPBOARD_DeleteRecord(lpFormat, !(hWndClipWindow));
556 /* Update the CF_OEMTEXT record */
557 lpFormat->wDataPresent = 1;
558 lpFormat->hData32 = 0;
559 lpFormat->hData16 = hText;
564 else if ( reqType == XA_PIXMAP || reqType == XA_BITMAP ) /* treat PIXMAP as CF_DIB or CF_BITMAP */
566 /* Get the first pixmap handle passed to us */
567 Pixmap *pPixmap = (Pixmap *)val;
568 HANDLE hTargetImage = 0; /* Handle to store the converted bitmap or DIB */
570 if (aformat != 32 || nitems < 1 || atype != XA_PIXMAP
571 || (wFormat != CF_BITMAP && wFormat != CF_DIB))
573 WARN("\tUnimplemented format conversion request\n");
577 if ( wFormat == CF_BITMAP )
579 /* For CF_BITMAP requests we must return an HBITMAP */
580 hTargetImage = X11DRV_BITMAP_CreateBitmapFromPixmap(*pPixmap, TRUE);
582 else if (wFormat == CF_DIB)
584 HWND hwnd = GetOpenClipboardWindow();
585 HDC hdc = GetDC(hwnd);
587 /* For CF_DIB requests we must return an HGLOBAL storing a packed DIB */
588 hTargetImage = X11DRV_DIB_CreateDIBFromPixmap(*pPixmap, hdc, TRUE);
590 ReleaseDC(hdc, hwnd);
595 WARN("PIXMAP conversion failed!\n" );
599 /* Delete previous clipboard data */
600 lpFormat = CLIPBOARD_LookupFormat(wFormat);
601 if (lpFormat->wDataPresent && (lpFormat->hData16 || lpFormat->hData32))
602 CLIPBOARD_DeleteRecord(lpFormat, !(hWndClipWindow));
604 /* Update the clipboard record */
605 lpFormat->wDataPresent = 1;
606 lpFormat->hData32 = hTargetImage;
607 lpFormat->hData16 = 0;
612 /* For native properties simply copy the X data without conversion */
613 else if (X11DRV_CLIPBOARD_IsNativeProperty(reqType)) /* <WCF>* */
615 HANDLE hClipData = 0;
617 int cBytes = nitems * aformat/8;
621 /* Turn on the DDESHARE flag to enable shared 32 bit memory */
622 hClipData = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cBytes );
623 if( (lpClipData = GlobalLock(hClipData)) )
625 memcpy(lpClipData, val, cBytes);
626 GlobalUnlock(hClipData);
634 /* delete previous clipboard record if any */
635 lpFormat = CLIPBOARD_LookupFormat(wFormat);
636 if (lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32)
637 CLIPBOARD_DeleteRecord(lpFormat, !(hWndClipWindow));
639 /* Update the clipboard record */
640 lpFormat->wDataPresent = 1;
641 lpFormat->hData32 = hClipData;
642 lpFormat->hData16 = 0;
649 WARN("\tUnimplemented format conversion request\n");
654 /* Delete the property on the window now that we are done
655 * This will send a PropertyNotify event to the selection owner. */
656 TSXDeleteProperty(display,w,prop);
658 /* Free the retrieved property data */
665 /**************************************************************************
666 * X11DRV_CLIPBOARD_ReleaseSelection
668 * Release an XA_PRIMARY or XA_CLIPBOARD selection that we own, in response
669 * to a SelectionClear event.
670 * This can occur in response to another client grabbing the X selection.
671 * If the XA_CLIPBOARD selection is lost, we relinquish XA_PRIMARY as well.
673 void X11DRV_CLIPBOARD_ReleaseSelection(Atom selType, Window w, HWND hwnd)
675 Atom xaClipboard = TSXInternAtom(display, "CLIPBOARD", False);
676 int clearAllSelections = PROFILE_GetWineIniInt("Clipboard", "ClearAllSelections", 0);
678 /* w is the window that lost the selection
679 * selectionPrevWindow is nonzero if CheckSelection() was called.
682 TRACE("\tevent->window = %08x (sw = %08x, spw=%08x)\n",
683 (unsigned)w, (unsigned)selectionWindow, (unsigned)selectionPrevWindow );
685 if( selectionAcquired )
687 if( w == selectionWindow || selectionPrevWindow == None)
689 /* If we're losing the CLIPBOARD selection, or if the preferences in .winerc
690 * dictate that *all* selections should be cleared on loss of a selection,
691 * we must give up all the selections we own.
693 if ( clearAllSelections || (selType == xaClipboard) )
695 /* completely give up the selection */
696 TRACE("Lost CLIPBOARD (+PRIMARY) selection\n");
698 /* We are completely giving up the selection.
699 * Make sure we can open the windows clipboard first. */
701 if ( !OpenClipboard(hwnd) )
704 * We can't empty the clipboard if we cant open it so abandon.
705 * Wine will think that it still owns the selection but this is
706 * safer than losing the selection without properly emptying
707 * the clipboard. Perhaps we should forcibly re-assert ownership
708 * of the CLIPBOARD selection in this case...
710 ERR("\tClipboard is busy. Could not give up selection!\n");
714 /* We really lost CLIPBOARD but want to voluntarily lose PRIMARY */
715 if ( (selType == xaClipboard)
716 && (selectionAcquired & S_PRIMARY) )
718 XSetSelectionOwner(display, XA_PRIMARY, None, CurrentTime);
721 /* We really lost PRIMARY but want to voluntarily lose CLIPBOARD */
722 if ( (selType == XA_PRIMARY)
723 && (selectionAcquired & S_CLIPBOARD) )
725 XSetSelectionOwner(display, xaClipboard, None, CurrentTime);
728 selectionWindow = None;
729 PrimarySelectionOwner = ClipboardSelectionOwner = 0;
731 /* Empty the windows clipboard.
732 * We should pretend that we still own the selection BEFORE calling
733 * EmptyClipboard() since otherwise this has the side effect of
734 * triggering X11DRV_CLIPBOARD_Acquire() and causing the X selection
735 * to be re-acquired by us!
737 selectionAcquired = (S_PRIMARY | S_CLIPBOARD);
741 /* Give up ownership of the windows clipboard */
742 CLIPBOARD_ReleaseOwner();
744 /* Reset the selection flags now that we are done */
745 selectionAcquired = S_NOSELECTION;
747 else if ( selType == XA_PRIMARY ) /* Give up only PRIMARY selection */
749 TRACE("Lost PRIMARY selection\n");
750 PrimarySelectionOwner = 0;
751 selectionAcquired &= ~S_PRIMARY; /* clear S_PRIMARY mask */
754 cSelectionTargets = 0;
756 /* but we'll keep existing data for internal use */
757 else if( w == selectionPrevWindow )
759 Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
761 w = TSXGetSelectionOwner(display, XA_PRIMARY);
763 TSXSetSelectionOwner(display, XA_PRIMARY, selectionWindow, CurrentTime);
765 w = TSXGetSelectionOwner(display, xaClipboard);
767 TSXSetSelectionOwner(display, xaClipboard, selectionWindow, CurrentTime);
771 /* Signal to a selectionClearEvent listener if the selection is completely lost */
772 if (selectionClearEvent && !selectionAcquired)
774 TRACE("Lost all selections, signalling to selectionClearEvent listener\n");
775 SetEvent(selectionClearEvent);
778 selectionPrevWindow = None;
781 /**************************************************************************
782 * X11DRV_ReleaseClipboard
783 * Voluntarily release all currently owned X selections
785 void X11DRV_ReleaseClipboard(void)
787 if( selectionAcquired )
790 Window savePrevWindow = selectionWindow;
791 Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
792 BOOL bHasPrimarySelection = selectionAcquired & S_PRIMARY;
794 selectionAcquired = S_NOSELECTION;
795 selectionPrevWindow = selectionWindow;
796 selectionWindow = None;
798 TRACE("\tgiving up selection (spw = %08x)\n",
799 (unsigned)selectionPrevWindow);
801 EnterCriticalSection(&X11DRV_CritSection);
803 TRACE("Releasing CLIPBOARD selection\n");
804 XSetSelectionOwner(display, xaClipboard, None, CurrentTime);
805 if( selectionPrevWindow )
806 while( !XCheckTypedWindowEvent( display, selectionPrevWindow,
807 SelectionClear, &xe ) );
809 if ( bHasPrimarySelection )
811 TRACE("Releasing XA_PRIMARY selection\n");
812 selectionPrevWindow = savePrevWindow; /* May be cleared in X11DRV_CLIPBOARD_ReleaseSelection */
813 XSetSelectionOwner(display, XA_PRIMARY, None, CurrentTime);
815 if( selectionPrevWindow )
816 while( !XCheckTypedWindowEvent( display, selectionPrevWindow,
817 SelectionClear, &xe ) );
820 LeaveCriticalSection(&X11DRV_CritSection);
823 /* Get rid of any Pixmap resources we may still have */
826 PROPERTY *prop = prop_head;
827 prop_head = prop->next;
828 XFreePixmap( display, prop->pixmap );
829 HeapFree( GetProcessHeap(), 0, prop );
833 /**************************************************************************
834 * X11DRV_AcquireClipboard
836 void X11DRV_AcquireClipboard(void)
839 HWND hWndClipWindow = GetOpenClipboardWindow();
842 * Acquire X selection if we don't already own it.
843 * Note that we only acquire the selection if it hasn't been already
844 * acquired by us, and ignore the fact that another X window may be
845 * asserting ownership. The reason for this is we need *any* top level
846 * X window to hold selection ownership. The actual clipboard data requests
847 * are made via GetClipboardData from EVENT_SelectionRequest and this
848 * ensures that the real HWND owner services the request.
849 * If the owning X window gets destroyed the selection ownership is
850 * re-cycled to another top level X window in X11DRV_CLIPBOARD_ResetOwner.
854 if ( !(selectionAcquired == (S_PRIMARY | S_CLIPBOARD)) )
856 Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
857 WND *tmpWnd = WIN_FindWndPtr( hWndClipWindow ? hWndClipWindow : AnyPopup() );
858 owner = X11DRV_WND_FindXWindow(tmpWnd );
859 WIN_ReleaseWndPtr(tmpWnd);
861 /* Grab PRIMARY selection if not owned */
862 if ( !(selectionAcquired & S_PRIMARY) )
863 TSXSetSelectionOwner(display, XA_PRIMARY, owner, CurrentTime);
865 /* Grab CLIPBOARD selection if not owned */
866 if ( !(selectionAcquired & S_CLIPBOARD) )
867 TSXSetSelectionOwner(display, xaClipboard, owner, CurrentTime);
869 if( TSXGetSelectionOwner(display,XA_PRIMARY) == owner )
870 selectionAcquired |= S_PRIMARY;
872 if( TSXGetSelectionOwner(display,xaClipboard) == owner)
873 selectionAcquired |= S_CLIPBOARD;
875 if (selectionAcquired)
877 selectionWindow = owner;
878 TRACE("Grabbed X selection, owner=(%08x)\n", (unsigned) owner);
883 /**************************************************************************
884 * X11DRV_IsClipboardFormatAvailable
886 * Checks if the specified format is available in the current selection
887 * Only invoked when WINE is not the selection owner
889 BOOL X11DRV_IsClipboardFormatAvailable(UINT wFormat)
891 Atom xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
892 Window ownerPrimary = TSXGetSelectionOwner(display,XA_PRIMARY);
893 Window ownerClipboard = TSXGetSelectionOwner(display,xaClipboard);
896 * If the selection has not been previously cached, or the selection has changed,
897 * try and cache the list of available selection targets from the current selection.
899 if ( !cSelectionTargets || (PrimarySelectionOwner != ownerPrimary)
900 || (ClipboardSelectionOwner != ownerClipboard) )
903 * First try cacheing the CLIPBOARD selection.
904 * If unavailable try PRIMARY.
906 if ( X11DRV_CLIPBOARD_CacheDataFormats(xaClipboard) == 0 )
908 X11DRV_CLIPBOARD_CacheDataFormats(XA_PRIMARY);
911 ClipboardSelectionOwner = ownerClipboard;
912 PrimarySelectionOwner = ownerPrimary;
915 /* Exit if there is no selection */
916 if ( !ownerClipboard && !ownerPrimary )
919 if ( wFormat == CF_TEXT )
920 wFormat = CF_OEMTEXT;
922 /* Check if the format is available in the clipboard cache */
923 if ( CLIPBOARD_IsPresent(wFormat) )
927 * Many X client apps (such as XTerminal) don't support being queried
928 * for the "TARGETS" target atom. To handle such clients we must actually
929 * try to convert the selection to the requested type.
931 if ( !cSelectionTargets )
932 return X11DRV_GetClipboardData( wFormat );
937 /**************************************************************************
938 * X11DRV_RegisterClipboardFormat
940 * Registers a custom X clipboard format
941 * Returns: TRUE - success, FALSE - failure
943 BOOL X11DRV_RegisterClipboardFormat( LPCSTR FormatName )
949 * If an X atom is registered for this format, return that
950 * Otherwise register a new atom.
954 /* Add a WINE specific prefix to the format */
955 strcpy(str, FMT_PREFIX);
956 strncat(str, FormatName, sizeof(str) - strlen(FMT_PREFIX));
957 prop = TSXInternAtom(display, str, False);
960 return (prop) ? TRUE : FALSE;
963 /**************************************************************************
964 * X11DRV_IsSelectionOwner
966 * Returns: TRUE - We(WINE) own the selection, FALSE - Selection not owned by us
968 BOOL X11DRV_IsSelectionOwner(void)
970 return selectionAcquired;
973 /**************************************************************************
974 * X11DRV_SetClipboardData
976 * We don't need to do anything special here since the clipboard code
977 * maintains the cache.
980 void X11DRV_SetClipboardData(UINT wFormat)
982 /* Make sure we have acquired the X selection */
983 X11DRV_AcquireClipboard();
986 /**************************************************************************
987 * X11DRV_GetClipboardData
989 * This method is invoked only when we DO NOT own the X selection
991 * NOTE: Clipboard driver doesn't get requests for CF_TEXT data, only
993 * We always get the data from the selection client each time,
994 * since we have no way of determining if the data in our cache is stale.
996 BOOL X11DRV_GetClipboardData(UINT wFormat)
998 BOOL bRet = selectionAcquired;
999 HWND hWndClipWindow = GetOpenClipboardWindow();
1000 HWND hWnd = (hWndClipWindow) ? hWndClipWindow : GetActiveWindow();
1002 LPWINE_CLIPFORMAT lpFormat;
1004 if( !selectionAcquired && (wnd = WIN_FindWndPtr(hWnd)) )
1008 Window w = X11DRV_WND_FindXWindow(wnd);
1009 WIN_ReleaseWndPtr(wnd);
1012 /* Map the format ID requested to an X selection property.
1013 * If the format is in the cache, use the atom associated
1017 lpFormat = CLIPBOARD_LookupFormat( wFormat );
1018 if (lpFormat && lpFormat->wDataPresent && lpFormat->drvData)
1019 propRequest = (Atom)lpFormat->drvData;
1021 propRequest = X11DRV_CLIPBOARD_MapFormatToProperty(wFormat);
1025 TRACE("Requesting %s selection from %s...\n",
1026 TSXGetAtomName(display, propRequest),
1027 TSXGetAtomName(display, selectionCacheSrc) );
1029 EnterCriticalSection( &X11DRV_CritSection );
1030 XConvertSelection(display, selectionCacheSrc, propRequest,
1031 TSXInternAtom(display, "SELECTION_DATA", False),
1034 /* wait until SelectionNotify is received */
1038 if( XCheckTypedWindowEvent(display, w, SelectionNotify, &xe) )
1039 if( xe.xselection.selection == selectionCacheSrc )
1042 LeaveCriticalSection( &X11DRV_CritSection );
1045 * Read the contents of the X selection property into WINE's
1046 * clipboard cache converting the selection to be compatible if possible.
1048 bRet = X11DRV_CLIPBOARD_ReadSelection( wFormat,
1049 xe.xselection.requestor,
1050 xe.xselection.property,
1051 xe.xselection.target);
1056 TRACE("\tpresent %s = %i\n", CLIPBOARD_GetFormatName(wFormat), bRet );
1062 /**************************************************************************
1063 * X11DRV_ResetSelectionOwner
1065 * Called from DestroyWindow() to prevent X selection from being lost when
1066 * a top level window is destroyed, by switching ownership to another top
1068 * Any top level window can own the selection. See X11DRV_CLIPBOARD_Acquire
1069 * for a more detailed description of this.
1071 void X11DRV_ResetSelectionOwner(WND *pWnd, BOOL bFooBar)
1073 HWND hWndClipOwner = 0;
1074 Window XWnd = X11DRV_WND_GetXWindow(pWnd);
1076 BOOL bLostSelection = FALSE;
1078 /* There is nothing to do if we don't own the selection,
1079 * or if the X window which currently owns the selecion is different
1080 * from the one passed in.
1082 if ( !selectionAcquired || XWnd != selectionWindow
1083 || selectionWindow == None )
1086 if ( (bFooBar && XWnd) || (!bFooBar && !XWnd) )
1089 hWndClipOwner = GetClipboardOwner();
1090 xaClipboard = TSXInternAtom(display, _CLIPBOARD, False);
1092 TRACE("clipboard owner = %04x, selection window = %08x\n",
1093 hWndClipOwner, (unsigned)selectionWindow);
1095 /* now try to salvage current selection from being destroyed by X */
1097 TRACE("\tchecking %08x\n", (unsigned) XWnd);
1099 selectionPrevWindow = selectionWindow;
1100 selectionWindow = None;
1103 selectionWindow = X11DRV_WND_GetXWindow(pWnd->next);
1104 else if( pWnd->parent )
1105 if( pWnd->parent->child != pWnd )
1106 selectionWindow = X11DRV_WND_GetXWindow(pWnd->parent->child);
1108 if( selectionWindow != None )
1110 /* We must pretend that we don't own the selection while making the switch
1111 * since a SelectionClear event will be sent to the last owner.
1112 * If there is no owner X11DRV_CLIPBOARD_ReleaseSelection will do nothing.
1114 int saveSelectionState = selectionAcquired;
1115 selectionAcquired = False;
1117 TRACE("\tswitching selection from %08x to %08x\n",
1118 (unsigned)selectionPrevWindow, (unsigned)selectionWindow);
1120 /* Assume ownership for the PRIMARY and CLIPBOARD selection */
1121 if ( saveSelectionState & S_PRIMARY )
1122 TSXSetSelectionOwner(display, XA_PRIMARY, selectionWindow, CurrentTime);
1124 TSXSetSelectionOwner(display, xaClipboard, selectionWindow, CurrentTime);
1126 /* Restore the selection masks */
1127 selectionAcquired = saveSelectionState;
1129 /* Lose the selection if something went wrong */
1130 if ( ( (saveSelectionState & S_PRIMARY) &&
1131 (TSXGetSelectionOwner(display, XA_PRIMARY) != selectionWindow) )
1132 || (TSXGetSelectionOwner(display, xaClipboard) != selectionWindow) )
1134 bLostSelection = TRUE;
1139 /* Update selection state */
1140 if (saveSelectionState & S_PRIMARY)
1141 PrimarySelectionOwner = selectionWindow;
1143 ClipboardSelectionOwner = selectionWindow;
1148 bLostSelection = TRUE;
1155 /* Launch the clipboard server if the selection can no longer be recyled
1156 * to another top level window. */
1158 if ( !X11DRV_CLIPBOARD_LaunchServer() )
1160 /* Empty the windows clipboard if the server was not launched.
1161 * We should pretend that we still own the selection BEFORE calling
1162 * EmptyClipboard() since otherwise this has the side effect of
1163 * triggering X11DRV_CLIPBOARD_Acquire() and causing the X selection
1164 * to be re-acquired by us!
1167 TRACE("\tLost the selection! Emptying the clipboard...\n");
1170 selectionAcquired = (S_PRIMARY | S_CLIPBOARD);
1175 /* Give up ownership of the windows clipboard */
1176 CLIPBOARD_ReleaseOwner();
1179 selectionAcquired = S_NOSELECTION;
1180 ClipboardSelectionOwner = PrimarySelectionOwner = 0;
1181 selectionWindow = 0;
1185 /**************************************************************************
1186 * X11DRV_CLIPBOARD_RegisterPixmapResource
1187 * Registers a Pixmap resource which is to be associated with a property Atom.
1188 * When the property is destroyed we also destroy the Pixmap through the
1189 * PropertyNotify event.
1191 BOOL X11DRV_CLIPBOARD_RegisterPixmapResource( Atom property, Pixmap pixmap )
1193 PROPERTY *prop = HeapAlloc( GetProcessHeap(), 0, sizeof(*prop) );
1194 if (!prop) return FALSE;
1195 prop->atom = property;
1196 prop->pixmap = pixmap;
1197 prop->next = prop_head;
1202 /**************************************************************************
1203 * X11DRV_CLIPBOARD_FreeResources
1205 * Called from EVENT_PropertyNotify() to give us a chance to destroy
1206 * any resources associated with this property.
1208 void X11DRV_CLIPBOARD_FreeResources( Atom property )
1210 /* Do a simple linear search to see if we have a Pixmap resource
1211 * associated with this property and release it.
1213 PROPERTY **prop = &prop_head;
1217 if ((*prop)->atom == property)
1219 PROPERTY *next = (*prop)->next;
1220 XFreePixmap( display, (*prop)->pixmap );
1221 HeapFree( GetProcessHeap(), 0, *prop );
1224 else prop = &(*prop)->next;