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Sweden-Number/windows/clipboard.c

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/*
* WIN32 clipboard implementation
*
* Copyright 1994 Martin Ayotte
* 1996 Alex Korobka
* 1999 Noel Borthwick
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* NOTES:
* This file contains the implementation for the WIN32 Clipboard API
* and Wine's internal clipboard cache.
* The actual contents of the clipboard are held in the clipboard cache.
* The internal implementation talks to a "clipboard driver" to fill or
* expose the cache to the native device. (Currently only the X11 and
* TTY clipboard driver are available)
*/
#include "config.h"
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/winuser16.h"
#include "wine/winbase16.h"
#include "heap.h"
#include "user.h"
#include "win.h"
#include "clipboard.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(clipboard);
#define CF_REGFORMATBASE 0xC000
/**************************************************************************
* Clipboard context global variables
*/
static HANDLE hClipLock = 0;
static BOOL bCBHasChanged = FALSE;
static HWND hWndClipWindow; /* window that last opened clipboard */
static HWND hWndClipOwner; /* current clipboard owner */
static HANDLE16 hTaskClipOwner; /* clipboard owner's task */
static HWND hWndViewer; /* start of viewers chain */
static WORD LastRegFormat = CF_REGFORMATBASE;
/* Clipboard cache initial data.
* WARNING: This data ordering is dependent on the WINE_CLIPFORMAT structure
* declared in clipboard.h
*/
WINE_CLIPFORMAT ClipFormats[] = {
{ CF_TEXT, 1, 0, "Text", 0, 0, 0, 0, NULL, &ClipFormats[1]},
{ CF_BITMAP, 1, 0, "Bitmap", 0, 0, 0, 0, &ClipFormats[0], &ClipFormats[2]},
{ CF_METAFILEPICT, 1, 0, "MetaFile Picture", 0, 0, 0, 0, &ClipFormats[1], &ClipFormats[3]},
{ CF_SYLK, 1, 0, "Sylk", 0, 0, 0, 0, &ClipFormats[2], &ClipFormats[4]},
{ CF_DIF, 1, 0, "DIF", 0, 0, 0, 0, &ClipFormats[3], &ClipFormats[5]},
{ CF_TIFF, 1, 0, "TIFF", 0, 0, 0, 0, &ClipFormats[4], &ClipFormats[6]},
{ CF_OEMTEXT, 1, 0, "OEM Text", 0, 0, 0, 0, &ClipFormats[5], &ClipFormats[7]},
{ CF_DIB, 1, 0, "DIB", 0, 0, 0, 0, &ClipFormats[6], &ClipFormats[8]},
{ CF_PALETTE, 1, 0, "Palette", 0, 0, 0, 0, &ClipFormats[7], &ClipFormats[9]},
{ CF_PENDATA, 1, 0, "PenData", 0, 0, 0, 0, &ClipFormats[8], &ClipFormats[10]},
{ CF_RIFF, 1, 0, "RIFF", 0, 0, 0, 0, &ClipFormats[9], &ClipFormats[11]},
{ CF_WAVE, 1, 0, "Wave", 0, 0, 0, 0, &ClipFormats[10], &ClipFormats[12]},
{ CF_UNICODETEXT, 1, 0, "Unicode Text", 0, 0, 0, 0, &ClipFormats[11], &ClipFormats[13]},
{ CF_OWNERDISPLAY, 1, 0, "Owner Display", 0, 0, 0, 0, &ClipFormats[12], &ClipFormats[14]},
{ CF_DSPTEXT, 1, 0, "DSPText", 0, 0, 0, 0, &ClipFormats[13], &ClipFormats[15]},
{ CF_DSPMETAFILEPICT, 1, 0, "DSPMetaFile Picture", 0, 0, 0, 0, &ClipFormats[14], &ClipFormats[16]},
{ CF_DSPBITMAP, 1, 0, "DSPBitmap", 0, 0, 0, 0, &ClipFormats[15], &ClipFormats[17]},
{ CF_HDROP, 1, 0, "HDROP", 0, 0, 0, 0, &ClipFormats[16], NULL}
};
/**************************************************************************
* Internal Clipboard implementation methods
**************************************************************************/
/**************************************************************************
* CLIPBOARD_LookupFormat
*/
static LPWINE_CLIPFORMAT __lookup_format( LPWINE_CLIPFORMAT lpFormat, WORD wID )
{
while(TRUE)
{
if (lpFormat == NULL ||
lpFormat->wFormatID == wID) break;
lpFormat = lpFormat->NextFormat;
}
return lpFormat;
}
LPWINE_CLIPFORMAT CLIPBOARD_LookupFormat( WORD wID )
{
return __lookup_format( ClipFormats, wID );
}
/**************************************************************************
* CLIPBOARD_IsLocked
* Check if the clipboard cache is available to the caller
*/
BOOL CLIPBOARD_IsLocked()
{
BOOL bIsLocked = TRUE;
HANDLE16 hTaskCur = GetCurrentTask();
/*
* The clipboard is available:
* 1. if the caller's task has opened the clipboard,
* or
* 2. if the caller is the clipboard owners task, AND is responding to a
* WM_RENDERFORMAT message.
*/
if ( hClipLock == hTaskCur )
bIsLocked = FALSE;
else if ( hTaskCur == hTaskClipOwner )
{
/* Check if we're currently executing inside a window procedure
* called in response to a WM_RENDERFORMAT message. A WM_RENDERFORMAT
* handler is not permitted to open the clipboard since it has been opened
* by another client. However the handler must have access to the
* clipboard in order to update data in response to this message.
*/
#if 0
MESSAGEQUEUE *queue = QUEUE_Current();
if ( queue
&& queue->smWaiting
&& queue->smWaiting->msg == WM_RENDERFORMAT
&& queue->smWaiting->hSrcQueue
)
bIsLocked = FALSE;
#else
/* FIXME: queue check no longer possible */
bIsLocked = FALSE;
#endif
}
return bIsLocked;
}
/**************************************************************************
* CLIPBOARD_ReleaseOwner
* Gives up ownership of the clipboard
*/
void CLIPBOARD_ReleaseOwner()
{
hWndClipOwner = 0;
hTaskClipOwner = 0;
}
/**************************************************************************
* CLIPBOARD_GlobalFreeProc
*
* This is a callback mechanism to allow HGLOBAL data to be released in
* the context of the process which allocated it. We post a WM_TIMER message
* to the owner window(in CLIPBOARD_DeleteRecord) and destroy the data(in idEvent)
* in this WndProc, which is invoked when the apps message loop calls DispatchMessage.
* This technique is discussed in Matt Pietrek's "Under the Hood".
* An article describing the same may be found in MSDN by searching for WM_TIMER.
* Note that this mechanism will probably stop working when WINE supports
* address space separation. When "queue events" are implemented in Wine we
* should switch to using that mechanism, since it is more robust and does not
* require a procedure address to be passed. See the SetWinEventHook API for
* more info on this.
*/
VOID CALLBACK CLIPBOARD_GlobalFreeProc( HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime )
{
/* idEvent is the HGLOBAL to be deleted */
GlobalFree( (HGLOBAL)idEvent );
}
/**************************************************************************
* CLIPBOARD_DeleteRecord
*/
void CLIPBOARD_DeleteRecord(LPWINE_CLIPFORMAT lpFormat, BOOL bChange)
{
if( (lpFormat->wFormatID >= CF_GDIOBJFIRST &&
lpFormat->wFormatID <= CF_GDIOBJLAST) || lpFormat->wFormatID == CF_BITMAP
|| lpFormat->wFormatID == CF_PALETTE)
{
if (lpFormat->hData32)
DeleteObject(lpFormat->hData32);
if (lpFormat->hData16)
DeleteObject(lpFormat->hData16);
}
else if( lpFormat->wFormatID == CF_METAFILEPICT )
{
if (lpFormat->hData32)
{
DeleteMetaFile( ((METAFILEPICT *)GlobalLock( lpFormat->hData32 ))->hMF );
PostMessageA(hWndClipOwner, WM_TIMER,
(WPARAM)lpFormat->hData32, (LPARAM)CLIPBOARD_GlobalFreeProc);
if (lpFormat->hDataSrc32)
{
/* Release lpFormat->hData32 in the context of the process which created it.
* See CLIPBOARD_GlobalFreeProc for more details about this technique.
* GlobalFree(lpFormat->hDataSrc32);
*/
PostMessageA(hWndClipOwner, WM_TIMER,
(WPARAM)lpFormat->hDataSrc32, (LPARAM)CLIPBOARD_GlobalFreeProc);
}
if (lpFormat->hData16)
/* HMETAFILE16 and HMETAFILE32 are apparently the same thing,
and a shallow copy is enough to share a METAFILEPICT
structure between 16bit and 32bit clipboards. The MetaFile
should of course only be deleted once. */
GlobalFree16(lpFormat->hData16);
}
if (lpFormat->hData16)
{
DeleteMetaFile16( ((METAFILEPICT16 *)GlobalLock16( lpFormat->hData16 ))->hMF );
GlobalFree16(lpFormat->hData16);
}
}
else
{
if (lpFormat->hData32)
{
/* Release lpFormat->hData32 in the context of the process which created it.
* See CLIPBOARD_GlobalFreeProc for more details about this technique.
* GlobalFree( lpFormat->hData32 );
*/
PostMessageA(hWndClipOwner, WM_TIMER,
(WPARAM)lpFormat->hData32, (LPARAM)CLIPBOARD_GlobalFreeProc);
}
if (lpFormat->hDataSrc32)
{
/* Release lpFormat->hData32 in the context of the process which created it.
* See CLIPBOARD_GlobalFreeProc for more details about this technique.
* GlobalFree(lpFormat->hDataSrc32);
*/
PostMessageA(hWndClipOwner, WM_TIMER,
(WPARAM)lpFormat->hDataSrc32, (LPARAM)CLIPBOARD_GlobalFreeProc);
}
if (lpFormat->hData16)
GlobalFree16(lpFormat->hData16);
}
lpFormat->wDataPresent = 0;
lpFormat->hData16 = 0;
lpFormat->hData32 = 0;
lpFormat->hDataSrc32 = 0;
lpFormat->drvData = 0;
if( bChange ) bCBHasChanged = TRUE;
}
/**************************************************************************
* CLIPBOARD_EmptyCache
*/
void CLIPBOARD_EmptyCache( BOOL bChange )
{
LPWINE_CLIPFORMAT lpFormat = ClipFormats;
while(lpFormat)
{
if ( lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32 )
CLIPBOARD_DeleteRecord( lpFormat, bChange );
lpFormat = lpFormat->NextFormat;
}
}
/**************************************************************************
* CLIPBOARD_IsPresent
*/
BOOL CLIPBOARD_IsPresent(WORD wFormat)
{
/* special case */
if( wFormat == CF_TEXT || wFormat == CF_OEMTEXT || wFormat == CF_UNICODETEXT )
return ClipFormats[CF_TEXT-1].wDataPresent ||
ClipFormats[CF_OEMTEXT-1].wDataPresent ||
ClipFormats[CF_UNICODETEXT-1].wDataPresent;
else
{
LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
if( lpFormat ) return (lpFormat->wDataPresent);
}
return FALSE;
}
/**************************************************************************
* CLIPBOARD_IsCacheRendered
* Checks if any data needs to be rendered to the clipboard cache
* RETURNS:
* TRUE - All clipboard data is available in the cache
* FALSE - Some data is marked for delayed render and needs rendering
*/
BOOL CLIPBOARD_IsCacheRendered()
{
LPWINE_CLIPFORMAT lpFormat = ClipFormats;
/* check if all formats were rendered */
while(lpFormat)
{
if( lpFormat->wDataPresent && !lpFormat->hData16 && !lpFormat->hData32 )
return FALSE;
lpFormat = lpFormat->NextFormat;
}
return TRUE;
}
/**************************************************************************
* CLIPBOARD_IsMemoryObject
* Tests if the clipboard format specifies a memory object
*/
BOOL CLIPBOARD_IsMemoryObject( WORD wFormat )
{
switch(wFormat)
{
case CF_BITMAP:
case CF_METAFILEPICT:
case CF_DSPTEXT:
case CF_ENHMETAFILE:
case CF_HDROP:
case CF_PALETTE:
case CF_PENDATA:
return FALSE;
default:
return TRUE;
}
}
/***********************************************************************
* CLIPBOARD_GlobalDupMem( HGLOBAL )
* Helper method to duplicate an HGLOBAL chunk of memory into shared memory
*/
HGLOBAL CLIPBOARD_GlobalDupMem( HGLOBAL hGlobalSrc )
{
HGLOBAL hGlobalDest;
PVOID pGlobalSrc, pGlobalDest;
DWORD cBytes;
if ( !hGlobalSrc )
return 0;
cBytes = GlobalSize(hGlobalSrc);
if ( 0 == cBytes )
return 0;
/* Turn on the DDESHARE and _MOVEABLE flags explicitly */
hGlobalDest = GlobalAlloc( GlobalFlags(hGlobalSrc) | GMEM_DDESHARE | GMEM_MOVEABLE,
cBytes );
if ( !hGlobalDest )
return 0;
pGlobalSrc = GlobalLock(hGlobalSrc);
pGlobalDest = GlobalLock(hGlobalDest);
if ( !pGlobalSrc || !pGlobalDest )
return 0;
memcpy(pGlobalDest, pGlobalSrc, cBytes);
GlobalUnlock(hGlobalSrc);
GlobalUnlock(hGlobalDest);
return hGlobalDest;
}
/**************************************************************************
* CLIPBOARD_GetFormatName
* Gets the format name associated with an ID
*/
char * CLIPBOARD_GetFormatName(UINT wFormat)
{
LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
return (lpFormat) ? lpFormat->Name : NULL;
}
/**************************************************************************
* CLIPBOARD_RenderFormat
*/
static BOOL CLIPBOARD_RenderFormat(LPWINE_CLIPFORMAT lpFormat)
{
/*
* If WINE is not the selection owner, and the format is available
* we must ask the driver to render the data to the clipboard cache.
*/
TRACE("enter format=%d\n", lpFormat->wFormatID);
if ( !USER_Driver.pIsSelectionOwner()
&& USER_Driver.pIsClipboardFormatAvailable( lpFormat->wFormatID ) )
{
if ( !USER_Driver.pGetClipboardData( lpFormat->wFormatID ) )
return FALSE;
}
/*
* If Wine owns the clipboard, and the data is marked for delayed render,
* render it now.
*/
else if( lpFormat->wDataPresent && !lpFormat->hData16 && !lpFormat->hData32 )
{
if( IsWindow(hWndClipOwner) )
{
/* Send a WM_RENDERFORMAT message to notify the owner to render the
* data requested into the clipboard.
*/
TRACE("Sending WM_RENDERFORMAT message\n");
SendMessageW( hWndClipOwner, WM_RENDERFORMAT, (WPARAM)lpFormat->wFormatID, 0 );
}
else
{
WARN("\thWndClipOwner (%04x) is lost!\n",
hWndClipOwner);
CLIPBOARD_ReleaseOwner();
lpFormat->wDataPresent = 0;
return FALSE;
}
}
return (lpFormat->hData16 || lpFormat->hData32) ? TRUE : FALSE;
}
/**************************************************************************
* CLIPBOARD_ConvertText
* Returns number of required/converted characters - not bytes!
*/
static INT CLIPBOARD_ConvertText(WORD src_fmt, void const *src, INT src_size,
WORD dst_fmt, void *dst, INT dst_size)
{
UINT cp;
if(src_fmt == CF_UNICODETEXT)
{
switch(dst_fmt)
{
case CF_TEXT:
cp = CP_ACP;
break;
case CF_OEMTEXT:
cp = CP_OEMCP;
break;
default:
return 0;
}
return WideCharToMultiByte(cp, 0, src, src_size, dst, dst_size, NULL, NULL);
}
if(dst_fmt == CF_UNICODETEXT)
{
switch(src_fmt)
{
case CF_TEXT:
cp = CP_ACP;
break;
case CF_OEMTEXT:
cp = CP_OEMCP;
break;
default:
return 0;
}
return MultiByteToWideChar(cp, 0, src, src_size, dst, dst_size);
}
if(!dst_size) return src_size;
if(dst_size > src_size) dst_size = src_size;
if(src_fmt == CF_TEXT )
CharToOemBuffA(src, dst, dst_size);
else
OemToCharBuffA(src, dst, dst_size);
return dst_size;
}
/**************************************************************************
* CLIPBOARD_RenderText
*
* Renders text to the clipboard buffer converting between UNIX and DOS formats.
*
* RETURNS: pointer to the WINE_CLIPFORMAT if successful, NULL otherwise
*
* FIXME: Should be a pair of driver functions that convert between OEM text and Windows.
*
*/
static LPWINE_CLIPFORMAT CLIPBOARD_RenderText( UINT wFormat )
{
LPWINE_CLIPFORMAT lpSource = ClipFormats;
LPWINE_CLIPFORMAT lpTarget = NULL;
BOOL foundData = FALSE;
/* Asked for CF_TEXT */
if( wFormat == CF_TEXT)
{
if(ClipFormats[CF_TEXT-1].wDataPresent)
{
lpSource = &ClipFormats[CF_TEXT-1];
lpTarget = &ClipFormats[CF_TEXT-1];
foundData = TRUE;
TRACE("\t TEXT -> TEXT\n");
}
else if(ClipFormats[CF_UNICODETEXT-1].wDataPresent)
{
/* Convert UNICODETEXT -> TEXT */
lpSource = &ClipFormats[CF_UNICODETEXT-1];
lpTarget = &ClipFormats[CF_TEXT-1];
foundData = TRUE;
TRACE("\tUNICODETEXT -> TEXT\n");
}
else if(ClipFormats[CF_OEMTEXT-1].wDataPresent)
{
/* Convert OEMTEXT -> TEXT */
lpSource = &ClipFormats[CF_OEMTEXT-1];
lpTarget = &ClipFormats[CF_TEXT-1];
foundData = TRUE;
TRACE("\tOEMTEXT -> TEXT\n");
}
}
/* Asked for CF_OEMTEXT */
else if( wFormat == CF_OEMTEXT)
{
if(ClipFormats[CF_OEMTEXT-1].wDataPresent)
{
lpSource = &ClipFormats[CF_OEMTEXT-1];
lpTarget = &ClipFormats[CF_OEMTEXT-1];
foundData = TRUE;
TRACE("\tOEMTEXT -> OEMTEXT\n");
}
else if(ClipFormats[CF_UNICODETEXT-1].wDataPresent)
{
/* Convert UNICODETEXT -> OEMTEXT */
lpSource = &ClipFormats[CF_UNICODETEXT-1];
lpTarget = &ClipFormats[CF_OEMTEXT-1];
foundData = TRUE;
TRACE("\tUNICODETEXT -> OEMTEXT\n");
}
else if(ClipFormats[CF_TEXT-1].wDataPresent)
{
/* Convert TEXT -> OEMTEXT */
lpSource = &ClipFormats[CF_TEXT-1];
lpTarget = &ClipFormats[CF_OEMTEXT-1];
foundData = TRUE;
TRACE("\tTEXT -> OEMTEXT\n");
}
}
/* Asked for CF_UNICODETEXT */
else if( wFormat == CF_UNICODETEXT )
{
if(ClipFormats[CF_UNICODETEXT-1].wDataPresent)
{
lpSource = &ClipFormats[CF_UNICODETEXT-1];
lpTarget = &ClipFormats[CF_UNICODETEXT-1];
foundData = TRUE;
TRACE("\tUNICODETEXT -> UNICODETEXT\n");
}
else if(ClipFormats[CF_TEXT-1].wDataPresent)
{
/* Convert TEXT -> UNICODETEXT */
lpSource = &ClipFormats[CF_TEXT-1];
lpTarget = &ClipFormats[CF_UNICODETEXT-1];
foundData = TRUE;
TRACE("\tTEXT -> UNICODETEXT\n");
}
else if(ClipFormats[CF_OEMTEXT-1].wDataPresent)
{
/* Convert OEMTEXT -> UNICODETEXT */
lpSource = &ClipFormats[CF_OEMTEXT-1];
lpTarget = &ClipFormats[CF_UNICODETEXT-1];
foundData = TRUE;
TRACE("\tOEMTEXT -> UNICODETEXT\n");
}
}
if (!foundData)
{
if ((wFormat == CF_TEXT) || (wFormat == CF_OEMTEXT))
{
lpSource = &ClipFormats[CF_UNICODETEXT-1];
lpTarget = __lookup_format( ClipFormats, wFormat );
}
else
{
lpSource = __lookup_format( ClipFormats, wFormat );
lpTarget = lpSource;
}
}
/* First render the source text format */
if ( !lpSource || !CLIPBOARD_RenderFormat(lpSource) ) return NULL;
/* Convert to the desired target text format, if necessary */
if( lpTarget != lpSource && !lpTarget->hData16 && !lpTarget->hData32 )
{
INT src_chars, dst_chars, alloc_size;
LPCSTR lpstrS;
LPSTR lpstrT;
if (lpSource->hData32)
{
lpstrS = (LPSTR)GlobalLock(lpSource->hData32);
}
else
{
lpstrS = (LPSTR)GlobalLock16(lpSource->hData16);
}
if( !lpstrS ) return NULL;
/* Text always NULL terminated */
if(lpSource->wFormatID == CF_UNICODETEXT)
src_chars = strlenW((LPCWSTR)lpstrS)+1;
else
src_chars = strlen(lpstrS)+1;
/* Calculate number of characters in the destination buffer */
dst_chars = CLIPBOARD_ConvertText(lpSource->wFormatID, lpstrS, src_chars,
lpTarget->wFormatID, NULL, 0);
if(!dst_chars) return NULL;
TRACE("\tconverting from '%s' to '%s', %i chars\n",
lpSource->Name, lpTarget->Name, src_chars);
/* Convert characters to bytes */
if(lpTarget->wFormatID == CF_UNICODETEXT)
alloc_size = dst_chars * sizeof(WCHAR);
else
alloc_size = dst_chars;
lpTarget->hData32 = GlobalAlloc(GMEM_ZEROINIT | GMEM_MOVEABLE | GMEM_DDESHARE, alloc_size);
lpstrT = (LPSTR)GlobalLock(lpTarget->hData32);
if( lpstrT )
{
CLIPBOARD_ConvertText(lpSource->wFormatID, lpstrS, src_chars,
lpTarget->wFormatID, lpstrT, dst_chars);
GlobalUnlock(lpTarget->hData32);
}
else
lpTarget->hData32 = 0;
/* Unlock source */
if (lpSource->hData32)
GlobalUnlock(lpSource->hData32);
else
GlobalUnlock16(lpSource->hData16);
}
return (lpTarget->hData16 || lpTarget->hData32) ? lpTarget : NULL;
}
/**************************************************************************
* CLIPBOARD_EnumClipboardFormats (internal)
*/
static UINT CLIPBOARD_EnumClipboardFormats( UINT wFormat )
{
LPWINE_CLIPFORMAT lpFormat = ClipFormats;
BOOL bFormatPresent;
if (wFormat == 0) /* start from the beginning */
lpFormat = ClipFormats;
else
{
/* walk up to the specified format record */
if( !(lpFormat = __lookup_format( lpFormat, wFormat )) )
return 0;
lpFormat = lpFormat->NextFormat; /* right */
}
while(TRUE)
{
if (lpFormat == NULL) return 0;
if(CLIPBOARD_IsPresent(lpFormat->wFormatID))
break;
/* Query the driver if not yet in the cache */
if (!USER_Driver.pIsSelectionOwner())
{
if(lpFormat->wFormatID == CF_UNICODETEXT ||
lpFormat->wFormatID == CF_TEXT ||
lpFormat->wFormatID == CF_OEMTEXT)
{
if(USER_Driver.pIsClipboardFormatAvailable(CF_UNICODETEXT) ||
USER_Driver.pIsClipboardFormatAvailable(CF_TEXT) ||
USER_Driver.pIsClipboardFormatAvailable(CF_OEMTEXT))
bFormatPresent = TRUE;
else
bFormatPresent = FALSE;
}
else
bFormatPresent = USER_Driver.pIsClipboardFormatAvailable(lpFormat->wFormatID);
if(bFormatPresent)
break;
}
lpFormat = lpFormat->NextFormat;
}
TRACE("Next available format %d\n", lpFormat->wFormatID);
return lpFormat->wFormatID;
}
/**************************************************************************
* WIN32 Clipboard implementation
**************************************************************************/
/**************************************************************************
* OpenClipboard (USER32.@)
*
* Note: Netscape uses NULL hWnd to open the clipboard.
*/
BOOL WINAPI OpenClipboard( HWND hWnd )
{
BOOL bRet;
TRACE("(%04x)...\n", hWnd);
if (!hClipLock)
{
hClipLock = GetCurrentTask();
/* Save current user of the clipboard */
hWndClipWindow = WIN_GetFullHandle( hWnd );
bCBHasChanged = FALSE;
bRet = TRUE;
}
else bRet = FALSE;
TRACE(" returning %i\n", bRet);
return bRet;
}
/**************************************************************************
* CloseClipboard (USER.138)
*/
BOOL16 WINAPI CloseClipboard16(void)
{
return CloseClipboard();
}
/**************************************************************************
* CloseClipboard (USER32.@)
*/
BOOL WINAPI CloseClipboard(void)
{
TRACE("()\n");
if (hClipLock == GetCurrentTask())
{
hWndClipWindow = 0;
if (bCBHasChanged && hWndViewer) SendMessageW( hWndViewer, WM_DRAWCLIPBOARD, 0, 0 );
hClipLock = 0;
}
return TRUE;
}
/**************************************************************************
* EmptyClipboard (USER.139)
*/
BOOL16 WINAPI EmptyClipboard16(void)
{
return EmptyClipboard();
}
/**************************************************************************
* EmptyClipboard (USER32.@)
* Empties and acquires ownership of the clipboard
*/
BOOL WINAPI EmptyClipboard(void)
{
TRACE("()\n");
if (hClipLock != GetCurrentTask())
{
WARN("Clipboard not opened by calling task!\n");
return FALSE;
}
/* destroy private objects */
if (hWndClipOwner) SendMessageW( hWndClipOwner, WM_DESTROYCLIPBOARD, 0, 0 );
/* empty the cache */
CLIPBOARD_EmptyCache(TRUE);
/* Assign ownership of the clipboard to the current client */
hWndClipOwner = hWndClipWindow;
/* Save the current task */
hTaskClipOwner = GetCurrentTask();
/* Tell the driver to acquire the selection */
USER_Driver.pAcquireClipboard();
return TRUE;
}
/**************************************************************************
* GetClipboardOwner (USER32.@)
* FIXME: Can't return the owner if the clipbard is owned by an external app
*/
HWND WINAPI GetClipboardOwner(void)
{
TRACE("()\n");
return hWndClipOwner;
}
/**************************************************************************
* SetClipboardData (USER.141)
*/
HANDLE16 WINAPI SetClipboardData16( UINT16 wFormat, HANDLE16 hData )
{
LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
TRACE("(%04X, %04x) !\n", wFormat, hData);
/* NOTE: If the hData is zero and current owner doesn't match
* the window that opened the clipboard then this application
* is screwed because WM_RENDERFORMAT will go to the owner.
* (to become the owner it must call EmptyClipboard() before
* adding new data).
*/
if( CLIPBOARD_IsLocked() || !lpFormat ||
(!hData && (!hWndClipOwner || (hWndClipOwner != hWndClipWindow))) )
{
WARN("Invalid hData or clipboard not opened by calling task!\n");
return 0;
}
/* Pass on the request to the driver */
USER_Driver.pSetClipboardData(wFormat);
if ( lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32 )
{
CLIPBOARD_DeleteRecord(lpFormat, TRUE);
/* delete existing CF_UNICODETEXT/CF_TEXT/CF_OEMTEXT aliases */
if(wFormat == CF_UNICODETEXT)
{
CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
}
else if(wFormat == CF_TEXT)
{
CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
}
else if(wFormat == CF_OEMTEXT)
{
CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
}
}
bCBHasChanged = TRUE;
lpFormat->wDataPresent = 1;
lpFormat->hData16 = hData; /* 0 is legal, see WM_RENDERFORMAT */
lpFormat->hData32 = 0;
return lpFormat->hData16;
}
/**************************************************************************
* SetClipboardData (USER32.@)
*/
HANDLE WINAPI SetClipboardData( UINT wFormat, HANDLE hData )
{
LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
TRACE("(%08X, %08x) !\n", wFormat, hData);
/* NOTE: If the hData is zero and current owner doesn't match
* the window that opened the clipboard then this application
* is screwed because WM_RENDERFORMAT will go to the owner.
* (to become the owner it must call EmptyClipboard() before
* adding new data).
*/
if( CLIPBOARD_IsLocked() || !lpFormat ||
(!hData && (!hWndClipOwner || (hWndClipOwner != hWndClipWindow))) )
{
WARN("Invalid hData or clipboard not opened by calling task!\n");
return 0;
}
/* Tell the driver to acquire the selection */
USER_Driver.pAcquireClipboard();
if ( lpFormat->wDataPresent &&
(lpFormat->hData16 || lpFormat->hData32) )
{
CLIPBOARD_DeleteRecord(lpFormat, TRUE);
/* delete existing CF_UNICODETEXT/CF_TEXT/CF_OEMTEXT aliases */
if(wFormat == CF_UNICODETEXT)
{
CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
}
else if(wFormat == CF_TEXT)
{
CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
}
else if(wFormat == CF_OEMTEXT)
{
CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
}
}
bCBHasChanged = TRUE;
lpFormat->wDataPresent = 1;
lpFormat->hDataSrc32 = hData; /* Save the source handle */
/*
* Make a shared duplicate if the memory is not shared
* TODO: What should be done for non-memory objects
*/
if ( CLIPBOARD_IsMemoryObject(wFormat) && hData && !(GlobalFlags(hData) & GMEM_DDESHARE) )
lpFormat->hData32 = CLIPBOARD_GlobalDupMem( hData );
else
lpFormat->hData32 = hData; /* 0 is legal, see WM_RENDERFORMAT */
lpFormat->hData16 = 0;
return lpFormat->hData32; /* Should we return lpFormat->hDataSrc32 */
}
/**************************************************************************
* GetClipboardData (USER.142)
*/
HANDLE16 WINAPI GetClipboardData16( UINT16 wFormat )
{
LPWINE_CLIPFORMAT lpRender = ClipFormats;
TRACE("(%04X)\n", wFormat);
if (CLIPBOARD_IsLocked())
{
WARN("Clipboard not opened by calling task!\n");
return 0;
}
if( wFormat == CF_UNICODETEXT || wFormat == CF_TEXT || wFormat == CF_OEMTEXT )
{
lpRender = CLIPBOARD_RenderText(wFormat);
if ( !lpRender ) return 0;
}
else
{
lpRender = __lookup_format( ClipFormats, wFormat );
if( !lpRender || !CLIPBOARD_RenderFormat(lpRender) ) return 0;
}
/* Convert between 32 -> 16 bit data, if necessary */
if( lpRender->hData32 && !lpRender->hData16
&& CLIPBOARD_IsMemoryObject(wFormat) )
{
int size;
if( lpRender->wFormatID == CF_METAFILEPICT )
size = sizeof( METAFILEPICT16 );
else
size = GlobalSize(lpRender->hData32);
lpRender->hData16 = GlobalAlloc16(GMEM_ZEROINIT, size);
if( !lpRender->hData16 )
ERR("(%04X) -- not enough memory in 16b heap\n", wFormat);
else
{
if( lpRender->wFormatID == CF_METAFILEPICT )
{
FIXME("\timplement function CopyMetaFilePict32to16\n");
FIXME("\tin the appropriate file.\n");
#ifdef SOMEONE_IMPLEMENTED_ME
CopyMetaFilePict32to16( GlobalLock16(lpRender->hData16),
GlobalLock(lpRender->hData32) );
#endif
}
else
{
memcpy( GlobalLock16(lpRender->hData16),
GlobalLock(lpRender->hData32),
size );
}
GlobalUnlock16(lpRender->hData16);
GlobalUnlock(lpRender->hData32);
}
}
TRACE("\treturning %04x (type %i)\n",
lpRender->hData16, lpRender->wFormatID);
return lpRender->hData16;
}
/**************************************************************************
* GetClipboardData (USER32.@)
*/
HANDLE WINAPI GetClipboardData( UINT wFormat )
{
LPWINE_CLIPFORMAT lpRender = ClipFormats;
TRACE("(%08X)\n", wFormat);
if (CLIPBOARD_IsLocked())
{
WARN("Clipboard not opened by calling task!\n");
return 0;
}
if( wFormat == CF_UNICODETEXT || wFormat == CF_TEXT || wFormat == CF_OEMTEXT )
{
lpRender = CLIPBOARD_RenderText(wFormat);
if ( !lpRender ) return 0;
}
else
{
lpRender = __lookup_format( ClipFormats, wFormat );
if( !lpRender || !CLIPBOARD_RenderFormat(lpRender) ) return 0;
}
/* Convert between 16 -> 32 bit data, if necessary */
if( lpRender->hData16 && !lpRender->hData32
&& CLIPBOARD_IsMemoryObject(wFormat) )
{
int size;
if( lpRender->wFormatID == CF_METAFILEPICT )
size = sizeof( METAFILEPICT );
else
size = GlobalSize16(lpRender->hData16);
lpRender->hData32 = GlobalAlloc(GMEM_ZEROINIT | GMEM_MOVEABLE | GMEM_DDESHARE,
size);
if( lpRender->wFormatID == CF_METAFILEPICT )
{
FIXME("\timplement function CopyMetaFilePict16to32\n");
FIXME("\tin the appropriate file.\n");
#ifdef SOMEONE_IMPLEMENTED_ME
CopyMetaFilePict16to32( GlobalLock16(lpRender->hData32),
GlobalLock(lpRender->hData16) );
#endif
}
else
{
memcpy( GlobalLock(lpRender->hData32),
GlobalLock16(lpRender->hData16),
size );
}
GlobalUnlock(lpRender->hData32);
GlobalUnlock16(lpRender->hData16);
}
TRACE("\treturning %04x (type %i)\n",
lpRender->hData32, lpRender->wFormatID);
return lpRender->hData32;
}
/**************************************************************************
* CountClipboardFormats (USER.143)
*/
INT16 WINAPI CountClipboardFormats16(void)
{
return CountClipboardFormats();
}
/**************************************************************************
* CountClipboardFormats (USER32.@)
*/
INT WINAPI CountClipboardFormats(void)
{
INT FormatCount = 0;
LPWINE_CLIPFORMAT lpFormat = ClipFormats;
TRACE("()\n");
while(TRUE)
{
if (lpFormat == NULL) break;
if( lpFormat->wFormatID != CF_TEXT ) /* Don't count CF_TEXT */
{
/*
* The format is available if either:
* 1. The data is already in the cache.
* 2. The selection is not owned by us(WINE) and the data is
* available to the clipboard driver.
*/
if ( lpFormat->wDataPresent ||
( !USER_Driver.pIsSelectionOwner()
&& USER_Driver.pIsClipboardFormatAvailable( lpFormat->wFormatID ) ) )
{
TRACE("\tdata found for format 0x%04x(%s)\n",
lpFormat->wFormatID, CLIPBOARD_GetFormatName(lpFormat->wFormatID));
FormatCount++;
}
}
lpFormat = lpFormat->NextFormat;
}
/* these are equivalent, adjust the total */
FormatCount += (ClipFormats[CF_UNICODETEXT-1].wDataPresent ||
ClipFormats[CF_TEXT-1].wDataPresent ||
ClipFormats[CF_OEMTEXT-1].wDataPresent) ? 1 : 0;
TRACE("\ttotal %d\n", FormatCount);
return FormatCount;
}
/**************************************************************************
* EnumClipboardFormats (USER.144)
*/
UINT16 WINAPI EnumClipboardFormats16( UINT16 wFormat )
{
return EnumClipboardFormats( wFormat );
}
/**************************************************************************
* EnumClipboardFormats (USER32.@)
*/
UINT WINAPI EnumClipboardFormats( UINT wFormat )
{
TRACE("(%04X)\n", wFormat);
if (CLIPBOARD_IsLocked())
{
WARN("Clipboard not opened by calling task!\n");
return 0;
}
return CLIPBOARD_EnumClipboardFormats(wFormat);
}
/**************************************************************************
* RegisterClipboardFormatA (USER32.@)
*/
UINT WINAPI RegisterClipboardFormatA( LPCSTR FormatName )
{
LPWINE_CLIPFORMAT lpNewFormat;
LPWINE_CLIPFORMAT lpFormat = ClipFormats;
if (FormatName == NULL) return 0;
TRACE("('%s') !\n", FormatName);
/* walk format chain to see if it's already registered */
while(TRUE)
{
if ( !strcmp(lpFormat->Name,FormatName) )
{
lpFormat->wRefCount++;
return lpFormat->wFormatID;
}
if ( lpFormat->NextFormat == NULL ) break;
lpFormat = lpFormat->NextFormat;
}
/* allocate storage for new format entry */
lpNewFormat = (LPWINE_CLIPFORMAT)HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_CLIPFORMAT));
if(lpNewFormat == NULL) {
WARN("No more memory for a new format!\n");
return 0;
}
lpFormat->NextFormat = lpNewFormat;
lpNewFormat->wFormatID = LastRegFormat;
lpNewFormat->wRefCount = 1;
if (!(lpNewFormat->Name = HeapAlloc(GetProcessHeap(), 0, strlen(FormatName)+1 )))
{
WARN("No more memory for the new format name!\n");
HeapFree(GetProcessHeap(), 0, lpNewFormat);
return 0;
}
strcpy( lpNewFormat->Name, FormatName );
lpNewFormat->wDataPresent = 0;
lpNewFormat->hData16 = 0;
lpNewFormat->hDataSrc32 = 0;
lpNewFormat->hData32 = 0;
lpNewFormat->drvData = 0;
lpNewFormat->PrevFormat = lpFormat;
lpNewFormat->NextFormat = NULL;
/* Pass on the registration request to the driver */
USER_Driver.pRegisterClipboardFormat( FormatName );
return LastRegFormat++;
}
/**************************************************************************
* RegisterClipboardFormat (USER.145)
*/
UINT16 WINAPI RegisterClipboardFormat16( LPCSTR FormatName )
{
return RegisterClipboardFormatA( FormatName );
}
/**************************************************************************
* RegisterClipboardFormatW (USER32.@)
*/
UINT WINAPI RegisterClipboardFormatW( LPCWSTR formatName )
{
LPSTR aFormat = HEAP_strdupWtoA( GetProcessHeap(), 0, formatName );
UINT ret = RegisterClipboardFormatA( aFormat );
HeapFree( GetProcessHeap(), 0, aFormat );
return ret;
}
/**************************************************************************
* GetClipboardFormatName (USER.146)
*/
INT16 WINAPI GetClipboardFormatName16( UINT16 wFormat, LPSTR retStr, INT16 maxlen )
{
return GetClipboardFormatNameA( wFormat, retStr, maxlen );
}
/**************************************************************************
* GetClipboardFormatNameA (USER32.@)
*/
INT WINAPI GetClipboardFormatNameA( UINT wFormat, LPSTR retStr, INT maxlen )
{
LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
TRACE("(%04X, %p, %d) !\n", wFormat, retStr, maxlen);
if (lpFormat == NULL || lpFormat->Name == NULL ||
lpFormat->wFormatID < CF_REGFORMATBASE) return 0;
TRACE("Name='%s' !\n", lpFormat->Name);
lstrcpynA( retStr, lpFormat->Name, maxlen );
return strlen(retStr);
}
/**************************************************************************
* GetClipboardFormatNameW (USER32.@)
*/
INT WINAPI GetClipboardFormatNameW( UINT wFormat, LPWSTR retStr, INT maxlen )
{
INT ret;
LPSTR p = HeapAlloc( GetProcessHeap(), 0, maxlen );
if(p == NULL) return 0; /* FIXME: is this the correct failure value? */
ret = GetClipboardFormatNameA( wFormat, p, maxlen );
if (maxlen > 0 && !MultiByteToWideChar( CP_ACP, 0, p, -1, retStr, maxlen ))
retStr[maxlen-1] = 0;
HeapFree( GetProcessHeap(), 0, p );
return ret;
}
/**************************************************************************
* SetClipboardViewer (USER32.@)
*/
HWND WINAPI SetClipboardViewer( HWND hWnd )
{
HWND hwndPrev = hWndViewer;
TRACE("(%04x): returning %04x\n", hWnd, hwndPrev);
hWndViewer = WIN_GetFullHandle( hWnd );
return hwndPrev;
}
/**************************************************************************
* GetClipboardViewer (USER32.@)
*/
HWND WINAPI GetClipboardViewer(void)
{
TRACE("()\n");
return hWndViewer;
}
/**************************************************************************
* ChangeClipboardChain (USER32.@)
*/
BOOL WINAPI ChangeClipboardChain(HWND hWnd, HWND hWndNext)
{
BOOL bRet = 0;
FIXME("(0x%04x, 0x%04x): stub?\n", hWnd, hWndNext);
if( hWndViewer )
bRet = !SendMessageW( hWndViewer, WM_CHANGECBCHAIN, (WPARAM)hWnd, (LPARAM)hWndNext );
else
WARN("hWndViewer is lost\n");
if( WIN_GetFullHandle(hWnd) == hWndViewer ) hWndViewer = WIN_GetFullHandle( hWndNext );
return bRet;
}
/**************************************************************************
* IsClipboardFormatAvailable (USER.193)
*/
BOOL16 WINAPI IsClipboardFormatAvailable16( UINT16 wFormat )
{
return IsClipboardFormatAvailable( wFormat );
}
/**************************************************************************
* IsClipboardFormatAvailable (USER32.@)
*/
BOOL WINAPI IsClipboardFormatAvailable( UINT wFormat )
{
BOOL bRet;
if (wFormat == 0) /* Reject this case quickly */
bRet = FALSE;
else
{
UINT iret = CLIPBOARD_EnumClipboardFormats(wFormat - 1);
if ((wFormat == CF_TEXT) || (wFormat == CF_OEMTEXT) || (wFormat == CF_UNICODETEXT))
bRet = ((iret == CF_TEXT) || (iret == CF_OEMTEXT) || (iret == CF_UNICODETEXT));
else
bRet = iret == wFormat;
}
TRACE("(%04X)- ret(%d)\n", wFormat, bRet);
return bRet;
}
/**************************************************************************
* GetOpenClipboardWindow (USER32.@)
* FIXME: This wont work if an external app owns the selection
*/
HWND WINAPI GetOpenClipboardWindow(void)
{
TRACE("()\n");
return hWndClipWindow;
}
/**************************************************************************
* GetPriorityClipboardFormat (USER32.@)
*/
INT WINAPI GetPriorityClipboardFormat( UINT *list, INT nCount )
{
int i;
TRACE("()\n");
if(CountClipboardFormats() == 0) return 0;
for (i = 0; i < nCount; i++)
if (IsClipboardFormatAvailable( list[i] )) return list[i];
return -1;
}
/**************************************************************************
* GetClipboardSequenceNumber (USER32.@)
* Supported on Win2k/Win98
* MSDN: Windows clipboard code keeps a serial number for the clipboard
* for each window station. The number is incremented whenever the
* contents change or are emptied.
* If you do not have WINSTA_ACCESSCLIPBOARD then the function returns 0
*/
DWORD WINAPI GetClipboardSequenceNumber(VOID)
{
FIXME("Returning 0, see windows/clipboard.c\n");
/* FIXME: Use serial numbers */
return 0;
}
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