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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include <sal/log.hxx>
#include <canvas/canvastools.hxx>
#include <tools/diagnose_ex.h>
#include <vcl/bitmapex.hxx>
#include <vcl/BitmapTools.hxx>
#include <vcl/canvastools.hxx>
#include "canvasbitmap.hxx"
#include "canvasbitmaphelper.hxx"
using namespace ::com::sun::star;
namespace vclcanvas
{
CanvasBitmapHelper::CanvasBitmapHelper() :
mpBackBuffer(),
mpOutDevReference()
{
}
void CanvasBitmapHelper::init( const BitmapEx& rBitmap,
rendering::XGraphicDevice& rDevice,
const OutDevProviderSharedPtr& rOutDevReference )
{
mpOutDevReference = rOutDevReference;
mpBackBuffer = std::make_shared<BitmapBackBuffer>( rBitmap, rOutDevReference->getOutDev() );
// forward new settings to base class (ref device, output
// surface, no protection (own backbuffer), alpha depends on
// whether BmpEx is transparent or not)
CanvasHelper::init( rDevice,
mpBackBuffer,
false,
rBitmap.IsAlpha() );
}
void CanvasBitmapHelper::disposing()
{
mpBackBuffer.reset();
mpOutDevReference.reset();
// forward to base class
CanvasHelper::disposing();
}
geometry::IntegerSize2D CanvasBitmapHelper::getSize() const
{
if( !mpBackBuffer )
return geometry::IntegerSize2D();
return vcl::unotools::integerSize2DFromSize( mpBackBuffer->getBitmapSizePixel() );
}
void CanvasBitmapHelper::clear()
{
// are we disposed?
if( mpBackBuffer )
mpBackBuffer->clear(); // alpha vdev needs special treatment
}
uno::Reference< rendering::XBitmap > CanvasBitmapHelper::getScaledBitmap( const geometry::RealSize2D& newSize,
bool beFast )
{
ENSURE_OR_THROW( mpDevice,
"disposed CanvasHelper" );
SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::getScaledBitmap()" );
if( !mpBackBuffer || mpDevice )
return uno::Reference< rendering::XBitmap >(); // we're disposed
BitmapEx aRes( mpBackBuffer->getBitmapReference() );
aRes.Scale( vcl::unotools::sizeFromRealSize2D(newSize),
beFast ? BmpScaleFlag::Default : BmpScaleFlag::BestQuality );
return uno::Reference< rendering::XBitmap >(
new CanvasBitmap( aRes, *mpDevice, mpOutDevReference ) );
}
uno::Sequence< sal_Int8 > CanvasBitmapHelper::getData( rendering::IntegerBitmapLayout& rLayout,
const geometry::IntegerRectangle2D& rect )
{
SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::getData()" );
if( !mpBackBuffer )
return uno::Sequence< sal_Int8 >(); // we're disposed
rLayout = getMemoryLayout();
// TODO(F1): Support more formats.
const Size aBmpSize( mpBackBuffer->getBitmapReference().GetSizePixel() );
rLayout.ScanLines = aBmpSize.Height();
rLayout.ScanLineBytes = aBmpSize.Width()*4;
rLayout.ScanLineStride = rLayout.ScanLineBytes;
uno::Sequence< sal_Int8 > aRes = vcl::bitmap::CanvasExtractBitmapData(mpBackBuffer->getBitmapReference(), rect);
return aRes;
}
uno::Sequence< sal_Int8 > CanvasBitmapHelper::getPixel( rendering::IntegerBitmapLayout& rLayout,
const geometry::IntegerPoint2D& pos )
{
SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::getPixel()" );
if( !mpBackBuffer )
return uno::Sequence< sal_Int8 >(); // we're disposed
rLayout = getMemoryLayout();
rLayout.ScanLines = 1;
rLayout.ScanLineBytes = 4;
rLayout.ScanLineStride = rLayout.ScanLineBytes;
const Size aBmpSize( mpBackBuffer->getBitmapReference().GetSizePixel() );
ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aBmpSize.Width(),
"X coordinate out of bounds" );
ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aBmpSize.Height(),
"Y coordinate out of bounds" );
::Color aColor = mpBackBuffer->getBitmapReference().GetPixelColor(pos.X, pos.Y);
uno::Sequence< sal_Int8 > aRes( 4 );
sal_Int8* pRes = aRes.getArray();
pRes[ 0 ] = aColor.GetRed();
pRes[ 1 ] = aColor.GetGreen();
pRes[ 2 ] = aColor.GetBlue();
pRes[ 3 ] = 255 - aColor.GetAlpha();
return aRes;
}
rendering::IntegerBitmapLayout CanvasBitmapHelper::getMemoryLayout() const
{
if( !mpOutDevProvider )
return rendering::IntegerBitmapLayout(); // we're disposed
rendering::IntegerBitmapLayout aBitmapLayout( ::canvas::tools::getStdMemoryLayout(getSize()) );
if ( !hasAlpha() )
aBitmapLayout.ColorSpace = canvas::tools::getStdColorSpaceWithoutAlpha();
return aBitmapLayout;
}
BitmapEx CanvasBitmapHelper::getBitmap() const
{
if( !mpBackBuffer )
return BitmapEx(); // we're disposed
else
return mpBackBuffer->getBitmapReference();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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