本文整理汇总了C++中CFbsBitmap::LockHeapLC方法的典型用法代码示例。如果您正苦于以下问题：C++ CFbsBitmap::LockHeapLC方法的具体用法？C++ CFbsBitmap::LockHeapLC怎么用？C++ CFbsBitmap::LockHeapLC使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CFbsBitmap的用法示例。
在下文中一共展示了CFbsBitmap::LockHeapLC方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CreateBitmapOptimizedL
CFbsBitmap* AknBitmapMirrorUtils::CreateBitmapOptimizedL(CFbsBitmap* aSourceBitmap, TInt aMirrorDirection)
{
// Check if displaymode is optimized, fallback to non-optimized version if not.
TBool fallback = ETrue;
TDisplayMode displayMode = aSourceBitmap->DisplayMode();
switch( displayMode )
{
case EGray256:
case EColor256:
case EColor4K:
case EColor64K:
fallback = EFalse;
break;
default:
fallback = ETrue;
}
// Check if mirroring mode is supported, fallback to non-optimized version if not.
if ((aMirrorDirection != EAknVerticalMirroring) && (aMirrorDirection != EAknHorizontalMirroring))
{
fallback = ETrue;
}
if( fallback )
return CreateBitmapL(aSourceBitmap, aMirrorDirection);
// Prepare destination bitmap
User::LeaveIfNull(aSourceBitmap);
CFbsBitmap* destinationBitmap = new (ELeave) CFbsBitmap();
CleanupStack::PushL(destinationBitmap);
TSize sourceBitmapSize = aSourceBitmap->SizeInPixels();
TRect sourceRect = TRect(TPoint(0,0), sourceBitmapSize);
TSize destinationBitmapSize(sourceRect.Width(), sourceRect.Height());
User::LeaveIfError(destinationBitmap->Create(destinationBitmapSize, aSourceBitmap->DisplayMode()));
// Check source, if rom bitmap or compressed then create uncompressed ram bitmap
TBool srcTemporary = EFalse;
if( aSourceBitmap->IsRomBitmap() )
{
srcTemporary = ETrue;
}
// Heap lock for FBServ large chunk to prevent background
// compression of aSrcBitmap after if IsCompressedInRAM returns EFalse
aSourceBitmap->LockHeapLC( ETrue ); // fbsheaplock
TBool fbsHeapLock = ETrue;
if( aSourceBitmap->IsCompressedInRAM() )
{
srcTemporary = ETrue;
}
if( aSourceBitmap->ExtendedBitmapType() != KNullUid )
{
srcTemporary = ETrue;
}
CFbsBitmap* realSource = aSourceBitmap;
if( srcTemporary )
{
CleanupStack::PopAndDestroy(); // fbsheaplock
fbsHeapLock = EFalse;
realSource = new (ELeave) CFbsBitmap();
CleanupStack::PushL( realSource );
User::LeaveIfError( realSource->Create( sourceBitmapSize, aSourceBitmap->DisplayMode() ) );
CFbsBitmapDevice* dev = CFbsBitmapDevice::NewL( realSource );
CleanupStack::PushL( dev );
CFbsBitGc* gc = NULL;
User::LeaveIfError( dev->CreateContext( gc ) );
CleanupStack::PushL( gc );
gc->BitBlt( TPoint(0,0), aSourceBitmap );
CleanupStack::PopAndDestroy(2); // dev, gc
}
// Heap lock for FBServ large chunk is only needed with large bitmaps.
if (!fbsHeapLock)
{
if ( realSource->IsLargeBitmap() || destinationBitmap->IsLargeBitmap() )
{
destinationBitmap->LockHeapLC( ETrue ); // fbsheaplock
}
else
{
CleanupStack::PushL( (TAny*)NULL );
}
}
TUint32* srcAddress = realSource->DataAddress();
TUint32* trgAddress = destinationBitmap->DataAddress();
if ( displayMode == EColor4K || displayMode == EColor64K )
{
TInt srcScanLen16 = CFbsBitmap::ScanLineLength(sourceBitmapSize.iWidth, displayMode) / 2;
TInt trgScanLen16 = CFbsBitmap::ScanLineLength(destinationBitmapSize.iWidth, displayMode) / 2;
TInt srcScanLen32 = CFbsBitmap::ScanLineLength(sourceBitmapSize.iWidth, displayMode) / 4;
TInt trgScanLen32 = CFbsBitmap::ScanLineLength(destinationBitmapSize.iWidth, displayMode) / 4;
switch (aMirrorDirection)
//.........这里部分代码省略.........