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move bitmap copy code from CanvasBitmapHelper to vcl

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part of making GetAlpha/GetMask an internal detail of vcl

Change-Id: Ie1740df3d6435d9f0f2de3297e7f224d2c6b3cc5
Reviewed-on: https://gerrit.libreoffice.org/51436
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
This commit is contained in:
Noel Grandin 2018-03-16 15:40:29 +02:00
parent 62275a93e3
commit 09cf2f4242
3 changed files with 57 additions and 47 deletions
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49
canvas/source/vcl/canvasbitmaphelper.cxx
View File

@ -117,60 +117,15 @@ namespace vclcanvas
return uno::Sequence< sal_Int8 >(); // we're disposed
rLayout = getMemoryLayout();
Bitmap aBitmap( mpBackBuffer->getBitmapReference().GetBitmap() );
Bitmap aAlpha( mpBackBuffer->getBitmapReference().GetAlpha().GetBitmap() );
Bitmap::ScopedReadAccess pReadAccess( aBitmap );
Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha.IsEmpty() ?
nullptr : aAlpha.AcquireReadAccess(),
aAlpha );
ENSURE_OR_THROW( pReadAccess.get() != nullptr,
"Could not acquire read access to bitmap" );
// TODO(F1): Support more formats.
const Size aBmpSize( aBitmap.GetSizePixel() );
const Size aBmpSize( mpBackBuffer->getBitmapReference().GetSizePixel() );
rLayout.ScanLines = aBmpSize.Height();
rLayout.ScanLineBytes = aBmpSize.Width()*4;
rLayout.ScanLineStride = rLayout.ScanLineBytes;
// for the time being, always return as BGRA
uno::Sequence< sal_Int8 > aRes( 4*aBmpSize.Width()*aBmpSize.Height() );
sal_Int8* pRes = aRes.getArray();
int nCurrPos(0);
for( long y=rect.Y1;
y<aBmpSize.Height() && y<rect.Y2;
++y )
{
Scanline pScanlineReadAlpha = pAlphaReadAccess->GetScanline( y );
if( pAlphaReadAccess.get() != nullptr )
{
for( long x=rect.X1;
x<aBmpSize.Width() && x<rect.X2;
++x )
{
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
pRes[ nCurrPos++ ] = pAlphaReadAccess->GetIndexFromData( pScanlineReadAlpha, x );
}
}
else
{
for( long x=rect.X1;
x<aBmpSize.Width() && x<rect.X2;
++x )
{
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
pRes[ nCurrPos++ ] = sal_uInt8(255);
}
}
}
uno::Sequence< sal_Int8 > aRes = vcl::bitmap::CanvasExtractBitmapData(mpBackBuffer->getBitmapReference(), rect);
return aRes;
}

2
include/vcl/BitmapTools.hxx
View File

@ -104,6 +104,8 @@ VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > GetMaskDIB(BitmapEx const & aBmpEx)
**/
VCL_DLLPUBLIC void CanvasCairoExtractBitmapData( BitmapEx & rBmpEx, Bitmap & rBitmap, unsigned char*& data, bool& bHasAlpha );
VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > CanvasExtractBitmapData(BitmapEx & rBitmapEx, const css::geometry::IntegerRectangle2D& rect);
}} // end vcl::bitmap
#endif // INCLUDED_VCL_BITMAP_TOOLS_HXX

53
vcl/source/bitmap/BitmapTools.cxx
View File

@ -939,6 +939,59 @@ void CanvasCairoExtractBitmapData( BitmapEx & aBmpEx, Bitmap & aBitmap, unsigned
}
uno::Sequence< sal_Int8 > CanvasExtractBitmapData(BitmapEx & rBitmapEx, const geometry::IntegerRectangle2D& rect)
{
Bitmap aBitmap( rBitmapEx.GetBitmap() );
Bitmap aAlpha( rBitmapEx.GetAlpha().GetBitmap() );
Bitmap::ScopedReadAccess pReadAccess( aBitmap );
Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha.IsEmpty() ?
nullptr : aAlpha.AcquireReadAccess(),
aAlpha );
assert( pReadAccess );
// TODO(F1): Support more formats.
const Size aBmpSize( aBitmap.GetSizePixel() );
// for the time being, always return as BGRA
uno::Sequence< sal_Int8 > aRes( 4*aBmpSize.Width()*aBmpSize.Height() );
sal_Int8* pRes = aRes.getArray();
int nCurrPos(0);
for( long y=rect.Y1;
y<aBmpSize.Height() && y<rect.Y2;
++y )
{
Scanline pScanlineReadAlpha = pAlphaReadAccess->GetScanline( y );
if( pAlphaReadAccess.get() != nullptr )
{
for( long x=rect.X1;
x<aBmpSize.Width() && x<rect.X2;
++x )
{
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
pRes[ nCurrPos++ ] = pAlphaReadAccess->GetIndexFromData( pScanlineReadAlpha, x );
}
}
else
{
for( long x=rect.X1;
x<aBmpSize.Width() && x<rect.X2;
++x )
{
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
pRes[ nCurrPos++ ] = sal_uInt8(255);
}
}
}
return aRes;
}
}} // end vcl::bitmap
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