/* -*- 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 = ::canvastools::getViewStateTransform(

                                                    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 );

        }

}

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