C++ PasteboardSynchronize函数代码示例

/**
 * Paste buffer into guest clipboard.
 *
 * @param   pPasteboard    Guest PasteBoard reference.
 * @param   pData          Data to be pasted.
 * @param   cbDataSize     The size of *pData.
 * @param   fFormat        Buffer data format.
 * @param   fClear         Whether or not clear guest clipboard before insert data.
 *
 * @returns IPRT status code.
 */
static int vbclClipboardGuestPasteData(PasteboardRef pPasteboard, UInt8 *pData, CFIndex cbDataSize, CFStringRef sFormat, bool fClear)
{
    PasteboardItemID    itemId   = (PasteboardItemID)1;
    CFDataRef           textData = NULL;
    OSStatus            rc;

    /* Ignoring sunchronization flags here */
    PasteboardSynchronize(pPasteboard);

    if (fClear)
    {
        rc = PasteboardClear(pPasteboard);
        AssertReturn(rc == noErr, VERR_NOT_SUPPORTED);
    }

    /* Create a CData object which we could pass to the pasteboard */
    if ((textData = CFDataCreate(kCFAllocatorDefault, pData, cbDataSize)))
    {
        /* Put the Utf-8 version to the pasteboard */
        rc = PasteboardPutItemFlavor(pPasteboard, itemId, sFormat, textData, 0);
        CFRelease(textData);
        if (rc != noErr)
        {
            VBoxClientVerbose(3, "unable to put data into guest's clipboard: %d\n", rc);
            return VERR_GENERAL_FAILURE;
        }
    }
    else
        return VERR_NO_MEMORY;

    /* Synchronize updated content */
    PasteboardSynchronize(pPasteboard);

    return VINF_SUCCESS;
}

/**
 * Inspect the global pasteboard for new content. Check if there is some type
 * that is supported by vbox and return it.
 *
 * @param   pPasteboardRef Reference to the global pasteboard.
 * @param   pfFormats      Pointer for the bit combination of the
 *                         supported types.
 * @param   pbChanged      True if something has changed after the
 *                         last call.
 *
 * @returns IPRT status code. (Always VINF_SUCCESS atm.)
 */
int queryNewPasteboardFormats(PasteboardRef pPasteboard, uint32_t *pfFormats, bool *pfChanged)
{
    Log(("queryNewPasteboardFormats\n"));

    OSStatus err = noErr;
    *pfChanged = true;

    PasteboardSyncFlags syncFlags;
    /* Make sure all is in sync */
    syncFlags = PasteboardSynchronize(pPasteboard);
    /* If nothing changed return */
    if (!(syncFlags & kPasteboardModified))
    {
        *pfChanged = false;
        return VINF_SUCCESS;
    }

    /* Are some items in the pasteboard? */
    ItemCount itemCount;
    err = PasteboardGetItemCount(pPasteboard, &itemCount);
    if (itemCount < 1)
        return VINF_SUCCESS;

    /* The id of the first element in the pasteboard */
    int rc = VINF_SUCCESS;
    PasteboardItemID itemID;
    if (!(err = PasteboardGetItemIdentifier(pPasteboard, 1, &itemID)))
    {
        /* Retrieve all flavors in the pasteboard, maybe there
         * is something we can use. */
        CFArrayRef flavorTypeArray;
        if (!(err = PasteboardCopyItemFlavors(pPasteboard, itemID, &flavorTypeArray)))
        {
            CFIndex flavorCount;
            flavorCount = CFArrayGetCount(flavorTypeArray);
            for (CFIndex flavorIndex = 0; flavorIndex < flavorCount; flavorIndex++)
            {
                CFStringRef flavorType;
                flavorType = static_cast <CFStringRef>(CFArrayGetValueAtIndex(flavorTypeArray,
                                                                               flavorIndex));
                /* Currently only unicode supported */
                if (UTTypeConformsTo(flavorType, kUTTypeUTF8PlainText) ||
                    UTTypeConformsTo(flavorType, kUTTypeUTF16PlainText))
                {
                    Log(("Unicode flavor detected.\n"));
                    *pfFormats |= VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT;
                }
                else if (UTTypeConformsTo(flavorType, kUTTypeBMP))
                {
                    Log(("BMP flavor detected.\n"));
                    *pfFormats |= VBOX_SHARED_CLIPBOARD_FMT_BITMAP;
                }
            }
            CFRelease(flavorTypeArray);
        }
    }

    Log(("queryNewPasteboardFormats: rc = %02X\n", rc));
    return rc;
}

void GHOST_SystemCarbon::putClipboard(GHOST_TInt8 *buffer, bool selection) const
{
	if (selection) {return; } // for copying the selection, used on X11

	PasteboardRef inPasteboard;
	CFDataRef textData = NULL;
	OSStatus err = noErr; /*For error checking*/
	OSStatus syncFlags;
	
	err = PasteboardCreate(kPasteboardClipboard, &inPasteboard);
	if (err != noErr) { return; }
	
	syncFlags = PasteboardSynchronize(inPasteboard);
	/* as we always put in a new string, we can safely ignore sync flags */
	if (syncFlags < 0) { return; }
	
	err = PasteboardClear(inPasteboard);
	if (err != noErr) { return; }
	
	textData = CFDataCreate(kCFAllocatorDefault, (UInt8 *)buffer, strlen(buffer));
	
	if (textData) {
		err = PasteboardPutItemFlavor(inPasteboard, (PasteboardItemID)1, CFSTR("public.utf8-plain-text"), textData, 0);
		if (err != noErr) {
			if (textData) { CFRelease(textData); }
			return;
		}
	}
	
	if (textData) {
		CFRelease(textData);
	}
}

char*
_applegetsnarf(void)
{
	char *s, *t;
	CFArrayRef flavors;
	CFDataRef data;
	CFIndex nflavor, ndata, j;
	CFStringRef type;
	ItemCount nitem;
	PasteboardItemID id;
	PasteboardSyncFlags flags;
	UInt32 i;

/*	fprint(2, "applegetsnarf\n"); */
	qlock(&clip.lk);
	if(clip.apple == nil){
		if(PasteboardCreate(kPasteboardClipboard, &clip.apple) != noErr){
			fprint(2, "apple pasteboard create failed\n");
			qunlock(&clip.lk);
			return nil;
		}
	}
	flags = PasteboardSynchronize(clip.apple);
	if(flags&kPasteboardClientIsOwner){
		s = strdup(clip.buf);
		qunlock(&clip.lk);
		return s;
	}
	if(PasteboardGetItemCount(clip.apple, &nitem) != noErr){
		fprint(2, "apple pasteboard get item count failed\n");
		qunlock(&clip.lk);
		return nil;
	}
	for(i=1; i<=nitem; i++){
		if(PasteboardGetItemIdentifier(clip.apple, i, &id) != noErr)
			continue;
		if(PasteboardCopyItemFlavors(clip.apple, id, &flavors) != noErr)
			continue;
		nflavor = CFArrayGetCount(flavors);
		for(j=0; j<nflavor; j++){
			type = (CFStringRef)CFArrayGetValueAtIndex(flavors, j);
			if(!UTTypeConformsTo(type, CFSTR("public.utf16-plain-text")))
				continue;
			if(PasteboardCopyItemFlavorData(clip.apple, id, type, &data) != noErr)
				continue;
			ndata = CFDataGetLength(data);
			qunlock(&clip.lk);
			s = smprint("%.*S", ndata/2, (Rune*)CFDataGetBytePtr(data));
			CFRelease(flavors);
			CFRelease(data);
			for(t=s; *t; t++)
				if(*t == '\r')
					*t = '\n';
			return s;
		}
		CFRelease(flavors);
	}
	qunlock(&clip.lk);
	return nil;		
}

static void RomInfoCopyToClipboard (void)
{
	OSStatus			err;
	PasteboardRef		clipboard;
	PasteboardSyncFlags	sync;
	CFDataRef			cfdata;
	char				text[1024];

	RomInfoBuildInfoText(text);

	err = PasteboardCreate(kPasteboardClipboard, &clipboard);
	if (err == noErr)
	{
		err = PasteboardClear(clipboard);
		if (err == noErr)
		{
			sync = PasteboardSynchronize(clipboard);
			if (!(sync & kPasteboardModified) && (sync & kPasteboardClientIsOwner))
			{
				cfdata = CFDataCreate(kCFAllocatorDefault, (UInt8 *) text, (CFIndex) strlen(text));
				if (cfdata)
				{
					err = PasteboardPutItemFlavor(clipboard, (PasteboardItemID) 1, CFSTR("com.apple.traditional-mac-plain-text"), cfdata, 0);
					CFRelease(cfdata);
				}
			}
		}

		CFRelease(clipboard);
	}
}

void clipboard_push_text(char * text)
{
#ifdef MACOSX
	PasteboardRef newclipboard;

	if (PasteboardCreate(kPasteboardClipboard, &newclipboard)!=noErr) return;
	if (PasteboardClear(newclipboard)!=noErr) return;
	PasteboardSynchronize(newclipboard);

	CFDataRef data = CFDataCreate(kCFAllocatorDefault, text, strlen(text));
	PasteboardPutItemFlavor(newclipboard, (PasteboardItemID)1, CFSTR("com.apple.traditional-mac-plain-text"), data, 0);
#elif defined WIN32
	if (OpenClipboard(NULL))
	{
		HGLOBAL cbuffer;
		char * glbuffer;

		EmptyClipboard();

		cbuffer = GlobalAlloc(GMEM_DDESHARE, strlen(text)+1);
		glbuffer = (char*)GlobalLock(cbuffer);

		strcpy(glbuffer, text);

		GlobalUnlock(cbuffer);
		SetClipboardData(CF_TEXT, cbuffer);
		CloseClipboard();
	}
#else
	printf("Not implemented: put text on clipboard \"%s\"\n", text);
#endif
}

void copy_to_clipboard(const std::string& text, const bool)
{
	std::string new_str;
	new_str.reserve(text.size());
	for (unsigned int i = 0; i < text.size(); ++i)
	{
		if (text[i] == '\n')
		{
			new_str.push_back('\r');
		} else {
			new_str.push_back(text[i]);
		}
	}
	OSStatus err = noErr;
	PasteboardRef clipboard;
	PasteboardSyncFlags syncFlags;
	CFDataRef textData = NULL;
	err = PasteboardCreate(kPasteboardClipboard, &clipboard);
	if (err != noErr) return;
	err = PasteboardClear(clipboard);
	if (err != noErr) return;
	syncFlags = PasteboardSynchronize(clipboard);
	if ((syncFlags&kPasteboardModified) && !(syncFlags&kPasteboardClientIsOwner)) return;
	textData = CFDataCreate(kCFAllocatorDefault, (const UInt8 *)new_str.c_str(), text.size());
	PasteboardPutItemFlavor(clipboard, (PasteboardItemID)1, CFSTR("public.utf8-plain-text"), textData, 0);
}

COSXClipboard::COSXClipboard() :
	m_time(0),
	m_pboard(NULL)
{
	m_converters.push_back(new COSXClipboardHTMLConverter);
	m_converters.push_back(new COSXClipboardBMPConverter);
	m_converters.push_back(new COSXClipboardUTF16Converter);
	m_converters.push_back(new COSXClipboardTextConverter);



	OSStatus createErr = PasteboardCreate(kPasteboardClipboard, &m_pboard);
	if (createErr != noErr) {
		LOG((CLOG_DEBUG "failed to create clipboard reference: error %i", createErr));
		LOG((CLOG_ERR "unable to connect to pasteboard, clipboard sharing disabled", createErr));
		m_pboard = NULL;
		return;

	}

	OSStatus syncErr = PasteboardSynchronize(m_pboard);
	if (syncErr != noErr) {
		LOG((CLOG_DEBUG "failed to syncronize clipboard: error %i", syncErr));
	}
}

bool wxDataObject::HasDataInPasteboard( void * pb )
{
    PasteboardRef pasteboard = (PasteboardRef) pb;
    size_t formatcount = GetFormatCount() + 1;
    wxDataFormat *array = new wxDataFormat[ formatcount ];
    array[0] = GetPreferredFormat();
    GetAllFormats( &array[1] );
    ItemCount itemCount = 0;
    bool hasData = false;

    // we synchronize here once again, so we don't mind which flags get returned
    PasteboardSynchronize( pasteboard );

    OSStatus err = PasteboardGetItemCount( pasteboard, &itemCount );
    if ( err == noErr )
    {
        for (size_t i = 0; !hasData && i < formatcount; i++)
        {
            // go through the data in our order of preference
            wxDataFormat dataFormat = array[ i ];

            for( UInt32 itemIndex = 1; itemIndex <= itemCount && hasData == false ; itemIndex++ )
            {
                PasteboardItemID    itemID = 0;
                CFArrayRef          flavorTypeArray = NULL;
                CFIndex             flavorCount = 0;

                err = PasteboardGetItemIdentifier( pasteboard, itemIndex, &itemID );
                if ( err != noErr )
                    continue;

                err = PasteboardCopyItemFlavors( pasteboard, itemID, &flavorTypeArray );
                if ( err != noErr )
                    continue;
                    
                flavorCount = CFArrayGetCount( flavorTypeArray );

                for( CFIndex flavorIndex = 0; !hasData && flavorIndex < flavorCount ; flavorIndex++ )
                {
                    CFStringRef             flavorType;
          
                    flavorType = (CFStringRef)CFArrayGetValueAtIndex( flavorTypeArray,
                                                                         flavorIndex );

                    wxDataFormat flavorFormat( (wxDataFormat::NativeFormat) flavorType );
 
                    if ( dataFormat == flavorFormat || 
                        dataFormat.GetType() == wxDF_UNICODETEXT && flavorFormat.GetType() == wxDF_TEXT )
                    {
                        hasData = true;
                    }
                }
                CFRelease( flavorTypeArray );
            }
        }
    }
    return hasData;
}

//******************************************************************************
bool CClipboard::SetString(
//Copies the given string into the system clipboard
//Returns: true on success, false otherwise.
//
//Params:
	const WSTRING& sClip)  //(in)
{
#ifdef WIN32
	if (!OpenClipboard(NULL))
		return false;
	EmptyClipboard();

	HGLOBAL global = GlobalAlloc(GMEM_ZEROINIT, (sClip.size()+1)*sizeof(WCHAR));

	if (global == NULL) {
		CloseClipboard();
		return false;
	}

	LPWSTR data = (LPWSTR)GlobalLock(global);

	WCScpy(data, sClip.c_str());

	GlobalUnlock(global);
	SetClipboardData(CF_UNICODETEXT, global);
	CloseClipboard();

	return true;
#elif defined(__APPLE__)
	PasteboardRef theClipboard;
    	OSStatus err = PasteboardCreate(kPasteboardClipboard, &theClipboard);
	if (err != noErr)
		return false;
	PasteboardClear(theClipboard);
	PasteboardSynchronize(theClipboard);
	BYTE *pbOutStr = NULL;
	if (to_utf8(sClip.c_str(), pbOutStr)) {
		CFDataRef data = CFDataCreate(kCFAllocatorDefault, (UInt8*)pbOutStr, sClip.size() + 1);
		PasteboardPutItemFlavor(theClipboard, (PasteboardItemID)1, CFSTR("public.utf8-plain-text"), data, 0);
	}
	delete[] pbOutStr;
	return true;
#elif defined(__linux__) || defined(__FreeBSD__)
	bool bSuccess = false;
	BYTE *pbOutStr = NULL;
	if (to_utf8(sClip.c_str(), pbOutStr))
		bSuccess = SetStringUTF8((const char*)pbOutStr);
	delete[] pbOutStr;
	return bSuccess;

#elif defined(__native_client__)
	return false;
#else
#error CClipboard::SetString -- Unicode not implemented
#endif
}

void g2LabelEdit::CopyBuffer()
{
    // Win32 implementation
    #ifdef _WIN32
    
        // Attempt to open clipboard
        if(!OpenClipboard(GetForegroundWindow()))
            return;
        
        // Empty current clipboard
        EmptyClipboard();
        
        // Allocate a system resource (a memory buffer for the text)
        HGLOBAL TextHandle = GlobalAlloc(GMEM_MOVEABLE, (strlen(TextBuffer) + 1) * sizeof(char));
        if(TextHandle == NULL)
            return;
        
        LPTSTR StringLock = (LPTSTR)GlobalLock(TextHandle);
        if(StringLock == NULL)
            return;
        strcpy(StringLock, TextBuffer);
        GlobalUnlock(TextHandle);
        
        // Copy to the clipboard
        SetClipboardData(CF_TEXT, TextHandle);
        
        // Close clipboard
        CloseClipboard();
    
    // OSX implementation
    #elif __APPLE__
    
        // Allocate or get a reference to the application's active clipboard
        PasteboardRef ClipboardHandle;
        if(PasteboardCreate(kPasteboardClipboard, &ClipboardHandle) != noErr)
            return;
        
        // Clear current clipboard
        if(PasteboardClear(ClipboardHandle) != noErr)
            return;
        
        // Explicitly update (after cleaning is important)
        PasteboardSynchronize(ClipboardHandle);
        
        // Create a system-wide buffer to give to the clipboard
        CFDataRef DataBuffer = CFDataCreate(kCFAllocatorDefault, (const UInt8*)TextBuffer, CFIndex((strlen(TextBuffer) + 1) * sizeof(char)));
        if(DataBuffer == NULL)
            return;
        
        // Paste into clipboard
        PasteboardPutItemFlavor(ClipboardHandle, (PasteboardItemID)1, CFSTR("public.utf8-plain-text"), DataBuffer, kPasteboardFlavorNoFlags);
    
    // Not a feature in Linux...
    #endif
}

void QuartzBitmap_Output(QuartzDesc_t dev, QuartzBitmapDevice *qbd)
{
    if(qbd->path && qbd->uti) {
        /* On 10.4+ we can employ the CGImageDestination API to create a
           variety of different bitmap formats */
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
	char buf[PATH_MAX+1];
	snprintf(buf, PATH_MAX, qbd->path, qbd->page); buf[PATH_MAX] = '\0';
        CFStringRef pathString = CFStringCreateWithBytes(kCFAllocatorDefault, (UInt8*) buf, strlen(buf), kCFStringEncodingUTF8, FALSE);
        CFURLRef path;
        if(CFStringFind(pathString, CFSTR("://"), 0).location != kCFNotFound) {
            CFStringRef pathEscaped = CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, pathString, NULL, NULL, kCFStringEncodingUTF8);
            path = CFURLCreateWithString(kCFAllocatorDefault, pathEscaped, NULL);
            CFRelease(pathEscaped);
        } else {
            path = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, (const UInt8*) buf, strlen(buf), FALSE);
        }
        CFRelease(pathString);

        CFStringRef scheme = CFURLCopyScheme(path);
       	CFStringRef type  = CFStringCreateWithBytes(kCFAllocatorDefault, (UInt8*) qbd->uti, strlen(qbd->uti), kCFStringEncodingUTF8, FALSE);
    	CGImageRef image = CGBitmapContextCreateImage(qbd->bitmap);
        if(CFStringCompare(scheme,CFSTR("file"), 0) == 0) { /* file output */
            CGImageDestinationRef dest = CGImageDestinationCreateWithURL(path, type, 1, NULL);
	    if(dest) {
		CGImageDestinationAddImage(dest, image, NULL);
		CGImageDestinationFinalize(dest);
		CFRelease(dest);
	    } else 
		error(_("QuartzBitmap_Output - unable to open file '%s'"), buf);
        } else if(CFStringCompare(scheme, CFSTR("clipboard"), 0) == 0) { /* clipboard output */
            CFMutableDataRef      data = CFDataCreateMutable(kCFAllocatorDefault, 0);
            CGImageDestinationRef dest = CGImageDestinationCreateWithData(data, type, 1, NULL);
            CGImageDestinationAddImage(dest, image, NULL);
            CGImageDestinationFinalize(dest);
            CFRelease(dest);
            PasteboardRef pb = NULL;
            if(PasteboardCreate(kPasteboardClipboard, &pb) == noErr) {
                PasteboardClear(pb);
                PasteboardSynchronize(pb);
                PasteboardPutItemFlavor(pb, (PasteboardItemID) 1, type, data, 0);
            }
            CFRelease(data);
        } else
            warning(_("not a supported scheme, no image data written"));
        CFRelease(scheme);
       	CFRelease(type);
        CFRelease(path);
        CFRelease(image);
#endif
    }
}

bool wxDataObject::IsFormatInPasteboard( void * pb, const wxDataFormat &dataFormat )
{
    PasteboardRef pasteboard = (PasteboardRef) pb;
    bool hasData = false;
    OSStatus err = noErr;
    ItemCount itemCount;

    // we synchronize here once again, so we don't mind which flags get returned
    PasteboardSynchronize( pasteboard );

    err = PasteboardGetItemCount( pasteboard, &itemCount );
    if ( err == noErr )
    {
        for( UInt32 itemIndex = 1; itemIndex <= itemCount && hasData == false ; itemIndex++ )
        {
            PasteboardItemID    itemID;
            CFArrayRef          flavorTypeArray;
            CFIndex             flavorCount;
     
            err = PasteboardGetItemIdentifier( pasteboard, itemIndex, &itemID );
            if ( err != noErr )
                continue;
     
            err = PasteboardCopyItemFlavors( pasteboard, itemID, &flavorTypeArray );
            if ( err != noErr )
                continue;
     
            flavorCount = CFArrayGetCount( flavorTypeArray );
     
            for( CFIndex flavorIndex = 0; flavorIndex < flavorCount && hasData == false ; flavorIndex++ )
            {
                CFStringRef             flavorType;
     
                flavorType = (CFStringRef)CFArrayGetValueAtIndex( flavorTypeArray,
                                                                     flavorIndex );
                     
                wxDataFormat flavorFormat( (wxDataFormat::NativeFormat) flavorType );
                if ( dataFormat == flavorFormat )
                    hasData = true;
                else if (  dataFormat.GetType() == wxDF_UNICODETEXT && flavorFormat.GetType() == wxDF_TEXT )
                    hasData = true;
            }
            CFRelease (flavorTypeArray);
        }
    }

    return hasData;
}

void
_appleputsnarf(char *s)
{
	CFDataRef cfdata;
	PasteboardSyncFlags flags;

/*	fprint(2, "appleputsnarf\n"); */

	if(strlen(s) >= SnarfSize)
		return;
	qlock(&clip.lk);
	strcpy(clip.buf, s);
	runesnprint(clip.rbuf, nelem(clip.rbuf), "%s", s);
	if(clip.apple == nil){
		if(PasteboardCreate(kPasteboardClipboard, &clip.apple) != noErr){
			fprint(2, "apple pasteboard create failed\n");
			qunlock(&clip.lk);
			return;
		}
	}
	if(PasteboardClear(clip.apple) != noErr){
		fprint(2, "apple pasteboard clear failed\n");
		qunlock(&clip.lk);
		return;
	}
	flags = PasteboardSynchronize(clip.apple);
	if((flags&kPasteboardModified) || !(flags&kPasteboardClientIsOwner)){
		fprint(2, "apple pasteboard cannot assert ownership\n");
		qunlock(&clip.lk);
		return;
	}
	cfdata = CFDataCreate(kCFAllocatorDefault, 
		(uchar*)clip.rbuf, runestrlen(clip.rbuf)*2);
	if(cfdata == nil){
		fprint(2, "apple pasteboard cfdatacreate failed\n");
		qunlock(&clip.lk);
		return;
	}
	if(PasteboardPutItemFlavor(clip.apple, (PasteboardItemID)1,
		CFSTR("public.utf16-plain-text"), cfdata, 0) != noErr){
		fprint(2, "apple pasteboard putitem failed\n");
		CFRelease(cfdata);
		qunlock(&clip.lk);
		return;
	}
	/* CFRelease(cfdata); ??? */
	qunlock(&clip.lk);
}

bool
QMacPasteboard::sync() const
{
    if (!paste)
        return false;
    const bool fromGlobal = PasteboardSynchronize(paste) & kPasteboardModified;
    
    if (fromGlobal)
        const_cast<QMacPasteboard *>(this)->setMimeData(0);

#ifdef DEBUG_PASTEBOARD
    if(fromGlobal)
        qDebug("Pasteboard: Synchronize!");
#endif
    return fromGlobal;
}