Allow passing in external buffers to svp's VirtualDevice.

We also want to be able to set whether or not the buffers
should be painted to top down, so add that parameter
as necessary (default seems to be false, however e.g. gtk
requires this to be true, i.e. needed for tiled rendering).

Change-Id: Id98882e4c7f62508ae5a976c0d8df743460a4ab2

1 files changed, 16 insertions, 8 deletions

diff --git a/vcl/source/gdi/virdev.cxx b/vcl/source/gdi/virdev.cxx
index 6378785526ef..54cd376c0ce0 100644
--- a/vcl/source/gdi/virdev.cxx
+++ b/vcl/source/gdi/virdev.cxx
@@ -267,7 +267,9 @@ VirtualDevice::~VirtualDevice()
         pSVData->maGDIData.mpLastVirDev = mpPrev;
 }
 
-bool VirtualDevice::InnerImplSetOutputSizePixel( const Size& rNewSize, bool bErase, const basebmp::RawMemorySharedArray &pBuffer )
+bool VirtualDevice::InnerImplSetOutputSizePixel( const Size& rNewSize, bool bErase,
+                                                 const basebmp::RawMemorySharedArray &pBuffer,
+                                                 const bool bTopDown )
 {
     SAL_INFO( "vcl.gdi",
               "VirtualDevice::InnerImplSetOutputSizePixel( " << rNewSize.Width() << ", "
@@ -296,7 +298,7 @@ bool VirtualDevice::InnerImplSetOutputSizePixel( const Size& rNewSize, bool bEra
     if ( bErase )
     {
         if ( pBuffer )
-            bRet = mpVirDev->SetSizeUsingBuffer( nNewWidth, nNewHeight, pBuffer );
+            bRet = mpVirDev->SetSizeUsingBuffer( nNewWidth, nNewHeight, pBuffer, bTopDown );
         else
             bRet = mpVirDev->SetSize( nNewWidth, nNewHeight );
 
@@ -381,9 +383,11 @@ void VirtualDevice::ImplFillOpaqueRectangle( const Rectangle& rRect )
     Pop();
 }
 
-bool VirtualDevice::ImplSetOutputSizePixel( const Size& rNewSize, bool bErase, const basebmp::RawMemorySharedArray &pBuffer )
+bool VirtualDevice::ImplSetOutputSizePixel( const Size& rNewSize, bool bErase,
+                                            const basebmp::RawMemorySharedArray &pBuffer,
+                                            const bool bTopDown )
 {
-    if( InnerImplSetOutputSizePixel(rNewSize, bErase, pBuffer) )
+    if( InnerImplSetOutputSizePixel(rNewSize, bErase, pBuffer, bTopDown) )
     {
         if( mnAlphaDepth != -1 )
         {
@@ -397,7 +401,9 @@ bool VirtualDevice::ImplSetOutputSizePixel( const Size& rNewSize, bool bErase, c
             if( !mpAlphaVDev )
             {
                 mpAlphaVDev = new VirtualDevice( *this, mnAlphaDepth );
-                mpAlphaVDev->InnerImplSetOutputSizePixel(rNewSize, bErase, basebmp::RawMemorySharedArray() );
+                mpAlphaVDev->InnerImplSetOutputSizePixel(rNewSize, bErase,
+                                                         basebmp::RawMemorySharedArray(),
+                                                         bTopDown );
             }
 
             // TODO: copy full outdev state to new one, here. Also needed in outdev2.cxx:DrawOutDev
@@ -430,10 +436,12 @@ void VirtualDevice::EnableRTL( bool bEnable )
 
 bool VirtualDevice::SetOutputSizePixel( const Size& rNewSize, bool bErase )
 {
-    return ImplSetOutputSizePixel( rNewSize, bErase, basebmp::RawMemorySharedArray() );
+    return ImplSetOutputSizePixel( rNewSize, bErase, basebmp::RawMemorySharedArray(), false );
 }
 
-bool VirtualDevice::SetOutputSizePixelScaleOffsetAndBuffer( const Size& rNewSize, const Fraction& rScale, const Point& rNewOffset, const basebmp::RawMemorySharedArray &pBuffer )
+bool VirtualDevice::SetOutputSizePixelScaleOffsetAndBuffer(
+    const Size& rNewSize, const Fraction& rScale, const Point& rNewOffset,
+    const basebmp::RawMemorySharedArray &pBuffer, const bool bTopDown )
 {
     if (pBuffer) {
         MapMode mm = GetMapMode();
@@ -442,7 +450,7 @@ bool VirtualDevice::SetOutputSizePixelScaleOffsetAndBuffer( const Size& rNewSize
         mm.SetScaleY( rScale );
         SetMapMode( mm );
     }
-    return ImplSetOutputSizePixel( rNewSize, true, pBuffer);
+    return ImplSetOutputSizePixel( rNewSize, true, pBuffer, bTopDown );
 }
 
 void VirtualDevice::SetReferenceDevice( RefDevMode i_eRefDevMode )