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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// must be first
#include <canvas/debug.hxx>
#include <tools/diagnose_ex.h>
#include "viewbackgroundshape.hxx"
#include "tools.hxx"
#include <rtl/logfile.hxx>
#include <rtl/math.hxx>
#include <comphelper/anytostring.hxx>
#include <cppuhelper/exc_hlp.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <com/sun/star/rendering/XCanvas.hpp>
#include <canvas/verbosetrace.hxx>
#include <canvas/canvastools.hxx>
#include <cppcanvas/vclfactory.hxx>
#include <cppcanvas/basegfxfactory.hxx>
#include <cppcanvas/renderer.hxx>
#include <cppcanvas/bitmap.hxx>
using namespace ::com::sun::star;
namespace slideshow
{
namespace internal
{
bool ViewBackgroundShape::prefetch( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas,
const GDIMetaFileSharedPtr& rMtf ) const
{
RTL_LOGFILE_CONTEXT( aLog, "::presentation::internal::ViewBackgroundShape::prefetch()" );
ENSURE_OR_RETURN_FALSE( rMtf,
"ViewBackgroundShape::prefetch(): no valid metafile!" );
const ::basegfx::B2DHomMatrix& rCanvasTransform(
mpViewLayer->getTransformation() );
if( !mxBitmap.is() ||
rMtf != mpLastMtf ||
rCanvasTransform != maLastTransformation )
{
// buffered bitmap is invalid, re-create
// determine transformed page bounds
::basegfx::B2DRectangle aTmpRect;
::canvas::tools::calcTransformedRectBounds( aTmpRect,
maBounds,
rCanvasTransform );
// determine pixel size of bitmap (choose it one pixel
// larger, as polygon rendering takes one pixel more
// to the right and to the bottom)
const ::basegfx::B2ISize aBmpSizePixel(
::basegfx::fround( aTmpRect.getRange().getX() + 1),
::basegfx::fround( aTmpRect.getRange().getY() + 1) );
// create a bitmap of appropriate size
::cppcanvas::BitmapSharedPtr pBitmap(
::cppcanvas::BaseGfxFactory::getInstance().createBitmap(
rDestinationCanvas,
aBmpSizePixel ) );
ENSURE_OR_THROW( pBitmap,
"ViewBackgroundShape::prefetch(): Cannot create background bitmap" );
::cppcanvas::BitmapCanvasSharedPtr pBitmapCanvas( pBitmap->getBitmapCanvas() );
ENSURE_OR_THROW( pBitmapCanvas,
"ViewBackgroundShape::prefetch(): Cannot create background bitmap canvas" );
// clear bitmap
initSlideBackground( pBitmapCanvas,
aBmpSizePixel );
// apply linear part of destination canvas transformation (linear means in this context:
// transformation without any translational components)
::basegfx::B2DHomMatrix aLinearTransform( rCanvasTransform );
aLinearTransform.set( 0, 2, 0.0 );
aLinearTransform.set( 1, 2, 0.0 );
pBitmapCanvas->setTransformation( aLinearTransform );
const basegfx::B2DHomMatrix aShapeTransform(basegfx::tools::createScaleTranslateB2DHomMatrix(
maBounds.getWidth(), maBounds.getHeight(),
maBounds.getMinX(), maBounds.getMinY()));
::cppcanvas::RendererSharedPtr pRenderer(
::cppcanvas::VCLFactory::getInstance().createRenderer(
pBitmapCanvas,
*rMtf.get(),
::cppcanvas::Renderer::Parameters() ) );
ENSURE_OR_RETURN_FALSE( pRenderer,
"ViewBackgroundShape::prefetch(): Could not create Renderer" );
pRenderer->setTransformation( aShapeTransform );
pRenderer->draw();
mxBitmap = pBitmap->getUNOBitmap();
}
mpLastMtf = rMtf;
maLastTransformation = rCanvasTransform;
return mxBitmap.is();
}
ViewBackgroundShape::ViewBackgroundShape( const ViewLayerSharedPtr& rViewLayer,
const ::basegfx::B2DRectangle& rShapeBounds ) :
mpViewLayer( rViewLayer ),
mxBitmap(),
mpLastMtf(),
maLastTransformation(),
maBounds( rShapeBounds )
{
ENSURE_OR_THROW( mpViewLayer, "ViewBackgroundShape::ViewBackgroundShape(): Invalid View" );
ENSURE_OR_THROW( mpViewLayer->getCanvas(), "ViewBackgroundShape::ViewBackgroundShape(): Invalid ViewLayer canvas" );
}
ViewLayerSharedPtr ViewBackgroundShape::getViewLayer() const
{
return mpViewLayer;
}
bool ViewBackgroundShape::render( const GDIMetaFileSharedPtr& rMtf ) const
{
RTL_LOGFILE_CONTEXT( aLog, "::presentation::internal::ViewBackgroundShape::draw()" );
const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas( mpViewLayer->getCanvas() );
if( !prefetch( rDestinationCanvas, rMtf ) )
return false;
ENSURE_OR_RETURN_FALSE( mxBitmap.is(),
"ViewBackgroundShape::draw(): Invalid background bitmap" );
::basegfx::B2DHomMatrix aTransform( mpViewLayer->getTransformation() );
// invert the linear part of the view transformation
// (i.e. the view transformation without translational
// components), to be able to leave the canvas
// transformation intact (would otherwise destroy possible
// clippings, as the clip polygon is relative to the view
// coordinate system).
aTransform.set(0,2, 0.0 );
aTransform.set(1,2, 0.0 );
aTransform.invert();
rendering::RenderState aRenderState;
::canvas::tools::initRenderState( aRenderState );
::canvas::tools::setRenderStateTransform( aRenderState, aTransform );
try
{
rDestinationCanvas->getUNOCanvas()->drawBitmap( mxBitmap,
rDestinationCanvas->getViewState(),
aRenderState );
}
catch( uno::Exception& )
{
OSL_FAIL( rtl::OUStringToOString(
comphelper::anyToString( cppu::getCaughtException() ),
RTL_TEXTENCODING_UTF8 ).getStr() );
return false;
}
return true;
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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