558 lines
22 KiB
C++
558 lines
22 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <canvas/debug.hxx>
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#include <tools/diagnose_ex.h>
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#include <com/sun/star/util/Endianness.hpp>
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#include <rtl/math.hxx>
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#include <tools/poly.hxx>
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#include <vcl/window.hxx>
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#include <vcl/bitmapex.hxx>
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#include <vcl/bmpacc.hxx>
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#include <vcl/canvastools.hxx>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/point/b2dpoint.hxx>
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#include <basegfx/tools/canvastools.hxx>
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#include <basegfx/numeric/ftools.hxx>
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#include <canvas/canvastools.hxx>
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#include "canvasbitmap.hxx"
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#include "canvasbitmaphelper.hxx"
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using namespace ::com::sun::star;
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namespace vclcanvas
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{
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CanvasBitmapHelper::CanvasBitmapHelper() :
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mpBackBuffer(),
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mpOutDevReference()
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{
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}
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void CanvasBitmapHelper::setBitmap( const BitmapEx& rBitmap )
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{
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ENSURE_OR_THROW( mpOutDev,
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"Invalid reference device" );
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mpBackBuffer.reset( new BitmapBackBuffer( rBitmap,
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mpOutDev->getOutDev() ) );
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// tell canvas helper about the new target OutDev (don't
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// protect state, it's our own VirDev, anyways)
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setOutDev( mpBackBuffer, false );
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}
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void CanvasBitmapHelper::init( const BitmapEx& rBitmap,
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rendering::XGraphicDevice& rDevice,
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const OutDevProviderSharedPtr& rOutDevReference )
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{
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mpOutDevReference = rOutDevReference;
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mpBackBuffer.reset( new BitmapBackBuffer( rBitmap, rOutDevReference->getOutDev() ));
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// forward new settings to base class (ref device, output
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// surface, no protection (own backbuffer), alpha depends on
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// whether BmpEx is transparent or not)
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CanvasHelper::init( rDevice,
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mpBackBuffer,
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false,
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rBitmap.IsTransparent() );
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}
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void CanvasBitmapHelper::disposing()
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{
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mpBackBuffer.reset();
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mpOutDevReference.reset();
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// forward to base class
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CanvasHelper::disposing();
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}
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geometry::IntegerSize2D CanvasBitmapHelper::getSize()
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{
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if( !mpBackBuffer )
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return geometry::IntegerSize2D();
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return ::vcl::unotools::integerSize2DFromSize( mpBackBuffer->getBitmapSizePixel() );
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}
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void CanvasBitmapHelper::clear()
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{
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// are we disposed?
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if( mpBackBuffer )
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mpBackBuffer->clear(); // alpha vdev needs special treatment
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}
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uno::Reference< rendering::XBitmap > CanvasBitmapHelper::getScaledBitmap( const geometry::RealSize2D& newSize,
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bool beFast )
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{
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ENSURE_OR_THROW( mpDevice,
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"disposed CanvasHelper" );
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SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::getScaledBitmap()" );
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if( !mpBackBuffer || mpDevice )
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return uno::Reference< rendering::XBitmap >(); // we're disposed
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BitmapEx aRes( mpBackBuffer->getBitmapReference() );
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aRes.Scale( ::vcl::unotools::sizeFromRealSize2D(newSize),
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beFast ? BMP_SCALE_DEFAULT : BMP_SCALE_BESTQUALITY );
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return uno::Reference< rendering::XBitmap >(
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new CanvasBitmap( aRes, *mpDevice, mpOutDevReference ) );
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}
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uno::Sequence< sal_Int8 > CanvasBitmapHelper::getData( rendering::IntegerBitmapLayout& rLayout,
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const geometry::IntegerRectangle2D& rect )
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{
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SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::getData()" );
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if( !mpBackBuffer )
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return uno::Sequence< sal_Int8 >(); // we're disposed
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rLayout = getMemoryLayout();
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Bitmap aBitmap( mpBackBuffer->getBitmapReference().GetBitmap() );
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Bitmap aAlpha( mpBackBuffer->getBitmapReference().GetAlpha().GetBitmap() );
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Bitmap::ScopedReadAccess pReadAccess( aBitmap );
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Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha.IsEmpty() ?
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(BitmapReadAccess*)NULL : aAlpha.AcquireReadAccess(),
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aAlpha );
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ENSURE_OR_THROW( pReadAccess.get() != NULL,
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"Could not acquire read access to bitmap" );
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// TODO(F1): Support more formats.
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const Size aBmpSize( aBitmap.GetSizePixel() );
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rLayout.ScanLines = aBmpSize.Height();
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rLayout.ScanLineBytes = aBmpSize.Width()*4;
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rLayout.ScanLineStride = rLayout.ScanLineBytes;
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// for the time being, always return as BGRA
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uno::Sequence< sal_Int8 > aRes( 4*aBmpSize.Width()*aBmpSize.Height() );
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sal_Int8* pRes = aRes.getArray();
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int nCurrPos(0);
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for( int y=rect.Y1;
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y<aBmpSize.Height() && y<rect.Y2;
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++y )
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{
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if( pAlphaReadAccess.get() != NULL )
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{
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for( int x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
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pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
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pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
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pRes[ nCurrPos++ ] = pAlphaReadAccess->GetPixel( y, x ).GetIndex();
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}
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}
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else
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{
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for( int x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
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pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
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pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
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pRes[ nCurrPos++ ] = sal_uInt8(255);
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}
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}
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}
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return aRes;
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}
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void CanvasBitmapHelper::setData( const uno::Sequence< sal_Int8 >& data,
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const rendering::IntegerBitmapLayout& rLayout,
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const geometry::IntegerRectangle2D& rect )
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{
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SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::setData()" );
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if( !mpBackBuffer )
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return; // we're disposed
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const rendering::IntegerBitmapLayout aRefLayout( getMemoryLayout() );
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ENSURE_ARG_OR_THROW( aRefLayout.PlaneStride != rLayout.PlaneStride ||
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aRefLayout.ColorSpace != rLayout.ColorSpace ||
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aRefLayout.Palette != rLayout.Palette ||
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aRefLayout.IsMsbFirst != rLayout.IsMsbFirst,
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"Mismatching memory layout" );
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// retrieve local copies from the BitmapEx, which are later
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// stored back. Unfortunately, the BitmapEx does not permit
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// in-place modifications, as they are necessary here.
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Bitmap aBitmap( mpBackBuffer->getBitmapReference().GetBitmap() );
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Bitmap aAlpha( mpBackBuffer->getBitmapReference().GetAlpha().GetBitmap() );
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bool bCopyBack( false ); // only copy something back, if we
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// actually changed a pixel
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{
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Bitmap::ScopedWriteAccess pWriteAccess( aBitmap );
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Bitmap::ScopedWriteAccess pAlphaWriteAccess( aAlpha.IsEmpty() ?
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(BitmapWriteAccess*)NULL : aAlpha.AcquireWriteAccess(),
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aAlpha );
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if( pAlphaWriteAccess.get() )
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{
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DBG_ASSERT( pAlphaWriteAccess->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ||
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pAlphaWriteAccess->GetScanlineFormat() == BMP_FORMAT_8BIT_TC_MASK,
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"non-8bit alpha not supported!" );
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}
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ENSURE_OR_THROW( pWriteAccess.get() != NULL,
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"Could not acquire write access to bitmap" );
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// TODO(F1): Support more formats.
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const Size aBmpSize( aBitmap.GetSizePixel() );
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// for the time being, always read as BGRA
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int x, y, nCurrPos(0);
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for( y=rect.Y1;
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y<aBmpSize.Height() && y<rect.Y2;
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++y )
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{
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if( pAlphaWriteAccess.get() != NULL )
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{
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switch( pWriteAccess->GetScanlineFormat() )
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{
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case BMP_FORMAT_8BIT_PAL:
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{
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Scanline pScan = pWriteAccess->GetScanline( y );
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Scanline pAScan = pAlphaWriteAccess->GetScanline( y );
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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*pScan++ = (sal_uInt8)pWriteAccess->GetBestPaletteIndex(
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BitmapColor( data[ nCurrPos ],
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data[ nCurrPos+1 ],
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data[ nCurrPos+2 ] ) );
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nCurrPos += 3;
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// cast to unsigned byte, for correct subtraction result
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*pAScan++ = static_cast<sal_uInt8>(255 -
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static_cast<sal_uInt8>(data[ nCurrPos++ ]));
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}
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}
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break;
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case BMP_FORMAT_24BIT_TC_BGR:
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{
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Scanline pScan = pWriteAccess->GetScanline( y );
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Scanline pAScan = pAlphaWriteAccess->GetScanline( y );
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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*pScan++ = data[ nCurrPos+2 ];
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*pScan++ = data[ nCurrPos+1 ];
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*pScan++ = data[ nCurrPos ];
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nCurrPos += 3;
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// cast to unsigned byte, for correct subtraction result
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*pAScan++ = static_cast<sal_uInt8>(255 -
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static_cast<sal_uInt8>(data[ nCurrPos++ ]));
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}
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}
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break;
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case BMP_FORMAT_24BIT_TC_RGB:
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{
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Scanline pScan = pWriteAccess->GetScanline( y );
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Scanline pAScan = pAlphaWriteAccess->GetScanline( y );
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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*pScan++ = data[ nCurrPos ];
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*pScan++ = data[ nCurrPos+1 ];
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*pScan++ = data[ nCurrPos+2 ];
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nCurrPos += 3;
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// cast to unsigned byte, for correct subtraction result
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*pAScan++ = static_cast<sal_uInt8>(255 -
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static_cast<sal_uInt8>(data[ nCurrPos++ ]));
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}
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}
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break;
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default:
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{
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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pWriteAccess->SetPixel( y, x, BitmapColor( data[ nCurrPos ],
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data[ nCurrPos+1 ],
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data[ nCurrPos+2 ] ) );
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nCurrPos += 3;
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// cast to unsigned byte, for correct subtraction result
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pAlphaWriteAccess->SetPixel( y, x,
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BitmapColor(
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static_cast<sal_uInt8>(255 -
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static_cast<sal_uInt8>(data[ nCurrPos++ ])) ) );
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}
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}
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break;
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}
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}
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else
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{
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// TODO(Q3): This is copy'n'pasted from
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// canvashelper.cxx, unify!
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switch( pWriteAccess->GetScanlineFormat() )
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{
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case BMP_FORMAT_8BIT_PAL:
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{
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Scanline pScan = pWriteAccess->GetScanline( y );
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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*pScan++ = (sal_uInt8)pWriteAccess->GetBestPaletteIndex(
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BitmapColor( data[ nCurrPos ],
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data[ nCurrPos+1 ],
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data[ nCurrPos+2 ] ) );
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nCurrPos += 4; // skip three colors, _plus_ alpha
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}
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}
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break;
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case BMP_FORMAT_24BIT_TC_BGR:
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{
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Scanline pScan = pWriteAccess->GetScanline( y );
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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*pScan++ = data[ nCurrPos+2 ];
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*pScan++ = data[ nCurrPos+1 ];
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*pScan++ = data[ nCurrPos ];
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nCurrPos += 4; // skip three colors, _plus_ alpha
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}
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}
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break;
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case BMP_FORMAT_24BIT_TC_RGB:
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{
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Scanline pScan = pWriteAccess->GetScanline( y );
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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*pScan++ = data[ nCurrPos ];
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*pScan++ = data[ nCurrPos+1 ];
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*pScan++ = data[ nCurrPos+2 ];
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nCurrPos += 4; // skip three colors, _plus_ alpha
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}
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}
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break;
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default:
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{
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for( x=rect.X1;
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x<aBmpSize.Width() && x<rect.X2;
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++x )
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{
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pWriteAccess->SetPixel( y, x, BitmapColor( data[ nCurrPos ],
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data[ nCurrPos+1 ],
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data[ nCurrPos+2 ] ) );
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nCurrPos += 4; // skip three colors, _plus_ alpha
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}
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}
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break;
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}
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}
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bCopyBack = true;
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}
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}
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// copy back only here, since the BitmapAccessors must be
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// destroyed beforehand
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if( bCopyBack )
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{
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if( aAlpha.IsEmpty() )
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setBitmap( BitmapEx( aBitmap ) );
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else
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setBitmap( BitmapEx( aBitmap,
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AlphaMask( aAlpha ) ) );
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}
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}
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void CanvasBitmapHelper::setPixel( const uno::Sequence< sal_Int8 >& color,
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const rendering::IntegerBitmapLayout& rLayout,
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const geometry::IntegerPoint2D& pos )
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{
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SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::setPixel()" );
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if( !mpBackBuffer )
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return; // we're disposed
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const Size aBmpSize( mpBackBuffer->getBitmapReference().GetSizePixel() );
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ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aBmpSize.Width(),
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"X coordinate out of bounds" );
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ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aBmpSize.Height(),
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"Y coordinate out of bounds" );
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ENSURE_ARG_OR_THROW( color.getLength() > 3,
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"not enough color components" );
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const rendering::IntegerBitmapLayout aRefLayout( getMemoryLayout() );
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ENSURE_ARG_OR_THROW( aRefLayout.PlaneStride != rLayout.PlaneStride ||
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aRefLayout.ColorSpace != rLayout.ColorSpace ||
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aRefLayout.Palette != rLayout.Palette ||
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aRefLayout.IsMsbFirst != rLayout.IsMsbFirst,
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"Mismatching memory layout" );
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// retrieve local copies from the BitmapEx, which are later
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// stored back. Unfortunately, the BitmapEx does not permit
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// in-place modifications, as they are necessary here.
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Bitmap aBitmap( mpBackBuffer->getBitmapReference().GetBitmap() );
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Bitmap aAlpha( mpBackBuffer->getBitmapReference().GetAlpha().GetBitmap() );
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bool bCopyBack( false ); // only copy something back, if we
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// actually changed a pixel
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{
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Bitmap::ScopedWriteAccess pWriteAccess( aBitmap );
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Bitmap::ScopedWriteAccess pAlphaWriteAccess( aAlpha.IsEmpty() ?
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(BitmapWriteAccess*)NULL : aAlpha.AcquireWriteAccess(),
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aAlpha );
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ENSURE_OR_THROW( pWriteAccess.get() != NULL,
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"Could not acquire write access to bitmap" );
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pWriteAccess->SetPixel( pos.Y, pos.X, BitmapColor( color[ 0 ],
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color[ 1 ],
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color[ 2 ] ) );
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if( pAlphaWriteAccess.get() != NULL )
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pAlphaWriteAccess->SetPixel( pos.Y, pos.X, BitmapColor( 255 - color[ 3 ] ) );
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bCopyBack = true;
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}
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// copy back only here, since the BitmapAccessors must be
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// destroyed beforehand
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if( bCopyBack )
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{
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if( aAlpha.IsEmpty() )
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setBitmap( BitmapEx( aBitmap ) );
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else
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setBitmap( BitmapEx( aBitmap,
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AlphaMask( aAlpha ) ) );
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}
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}
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uno::Sequence< sal_Int8 > CanvasBitmapHelper::getPixel( rendering::IntegerBitmapLayout& rLayout,
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const geometry::IntegerPoint2D& pos )
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{
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SAL_INFO( "canvas.vcl", "::vclcanvas::CanvasBitmapHelper::getPixel()" );
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if( !mpBackBuffer )
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return uno::Sequence< sal_Int8 >(); // we're disposed
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rLayout = getMemoryLayout();
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rLayout.ScanLines = 1;
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rLayout.ScanLineBytes = 4;
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rLayout.ScanLineStride = rLayout.ScanLineBytes;
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const Size aBmpSize( mpBackBuffer->getBitmapReference().GetSizePixel() );
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ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aBmpSize.Width(),
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"X coordinate out of bounds" );
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ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aBmpSize.Height(),
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"Y coordinate out of bounds" );
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Bitmap aBitmap( mpBackBuffer->getBitmapReference().GetBitmap() );
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Bitmap aAlpha( mpBackBuffer->getBitmapReference().GetAlpha().GetBitmap() );
|
|
|
|
Bitmap::ScopedReadAccess pReadAccess( aBitmap );
|
|
Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha.IsEmpty() ?
|
|
(BitmapReadAccess*)NULL : aAlpha.AcquireReadAccess(),
|
|
aAlpha );
|
|
ENSURE_OR_THROW( pReadAccess.get() != NULL,
|
|
"Could not acquire read access to bitmap" );
|
|
|
|
uno::Sequence< sal_Int8 > aRes( 4 );
|
|
sal_Int8* pRes = aRes.getArray();
|
|
|
|
const BitmapColor aColor( pReadAccess->GetColor( pos.Y, pos.X ) );
|
|
pRes[ 0 ] = aColor.GetRed();
|
|
pRes[ 1 ] = aColor.GetGreen();
|
|
pRes[ 2 ] = aColor.GetBlue();
|
|
|
|
if( pAlphaReadAccess.get() != NULL )
|
|
pRes[ 3 ] = pAlphaReadAccess->GetPixel( pos.Y, pos.X ).GetIndex();
|
|
else
|
|
pRes[ 3 ] = sal_uInt8(255);
|
|
|
|
return aRes;
|
|
}
|
|
|
|
rendering::IntegerBitmapLayout CanvasBitmapHelper::getMemoryLayout()
|
|
{
|
|
if( !mpOutDev.get() )
|
|
return rendering::IntegerBitmapLayout(); // we're disposed
|
|
|
|
rendering::IntegerBitmapLayout xBitmapLayout( ::canvas::tools::getStdMemoryLayout(getSize()) );
|
|
if ( !hasAlpha() )
|
|
xBitmapLayout.ColorSpace = canvas::tools::getStdColorSpaceWithoutAlpha();
|
|
|
|
return xBitmapLayout;
|
|
}
|
|
|
|
BitmapEx CanvasBitmapHelper::getBitmap() const
|
|
{
|
|
if( !mpBackBuffer )
|
|
return BitmapEx(); // we're disposed
|
|
else
|
|
return mpBackBuffer->getBitmapReference();
|
|
}
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|