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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 <com/sun/star/rendering/RepaintResult.hpp>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <canvas/canvastools.hxx>
#include <cppcanvas/canvas.hxx>
#include "cachedprimitivebase.hxx"
#include <sal/log.hxx>
#include <utility>
using namespace ::com::sun::star;
namespace cppcanvas::internal
{
CachedPrimitiveBase::CachedPrimitiveBase( CanvasSharedPtr xCanvas,
bool bOnlyRedrawWithSameTransform ) :
mpCanvas(std::move( xCanvas )),
mbOnlyRedrawWithSameTransform( bOnlyRedrawWithSameTransform )
{
// TODO(F2): also store last view transform, and refuse to
// redraw if changed.
}
bool CachedPrimitiveBase::render( const ::basegfx::B2DHomMatrix& rTransformation ) const
{
SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::CachedPrimitiveBase::render()" );
SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::CachedPrimitiveBase: 0x" << std::hex << this );
const rendering::ViewState aViewState( mpCanvas->getViewState() );
::basegfx::B2DHomMatrix aTotalTransform;
::canvas::tools::getViewStateTransform( aTotalTransform,
aViewState );
aTotalTransform *= rTransformation;
// can we use the cached primitive? For that, it must be
// present in the first place, and, if
// mbOnlyRedrawWithSameTransform is true, the overall
// transformation must be the same.
if( mxCachedPrimitive.is() &&
(!mbOnlyRedrawWithSameTransform ||
maLastTransformation == aTotalTransform) )
{
if( mxCachedPrimitive->redraw( aViewState ) ==
rendering::RepaintResult::REDRAWN )
{
// cached repaint succeeded, done.
return true;
}
}
maLastTransformation = aTotalTransform;
// delegate rendering to derived classes
return renderPrimitive( mxCachedPrimitive,
rTransformation );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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