/* -*- 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 "lineaction.hxx"

#include <outdevstate.hxx>

#include <com/sun/star/rendering/XCanvas.hpp>

#include <basegfx/range/b2drange.hxx>

#include <basegfx/point/b2dpoint.hxx>

#include <basegfx/utils/canvastools.hxx>

#include <canvas/canvastools.hxx>

#include <sal/log.hxx>

#include <cppcanvas/canvas.hxx>

#include <utility>

#include "mtftools.hxx"

using namespace ::com::sun::star;

namespace cppcanvas::internal

{

        namespace

        {

            class LineAction : public Action

            {

            public:

                LineAction( const ::basegfx::B2DPoint&,

                            const ::basegfx::B2DPoint&,

                            CanvasSharedPtr,

                            const OutDevState& );

                LineAction(const LineAction&) = delete;

                const LineAction& operator=(const LineAction&) = delete;

                virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation ) const override;

                virtual bool renderSubset( const ::basegfx::B2DHomMatrix& rTransformation,

                                           const Subset&                  rSubset ) const override;

                virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const override;

                virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix&   rTransformation,

                                                       const Subset&                    rSubset ) const override;

                virtual sal_Int32 getActionCount() const override;

            private:

                ::basegfx::B2DPoint     maStartPoint;

                ::basegfx::B2DPoint     maEndPoint;

                CanvasSharedPtr         mpCanvas;

                rendering::RenderState  maState;

            };

            LineAction::LineAction( const ::basegfx::B2DPoint& rStartPoint,

                                    const ::basegfx::B2DPoint& rEndPoint,

                                    CanvasSharedPtr            xCanvas,

                                    const OutDevState&         rState ) :

                maStartPoint( rStartPoint ),

                maEndPoint( rEndPoint ),

                mpCanvas(std::move( xCanvas ))

            {

                cppcanvastools::initRenderState(maState,rState);

                maState.DeviceColor = rState.lineColor;

            }

            bool LineAction::render( const ::basegfx::B2DHomMatrix& rTransformation ) const

            {

                SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::LineAction::render()" );

                SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::LineAction: 0x" << std::hex << this );

                rendering::RenderState aLocalState( maState );

                ::canvastools::prependToRenderState(aLocalState, rTransformation);

                mpCanvas->getUNOCanvas()->drawLine( ::basegfx::unotools::point2DFromB2DPoint(maStartPoint),

                                                    ::basegfx::unotools::point2DFromB2DPoint(maEndPoint),

                                                    mpCanvas->getViewState(),

                                                    aLocalState );

                return true;

            }

            bool LineAction::renderSubset( const ::basegfx::B2DHomMatrix& rTransformation,

                                           const Subset&                  rSubset ) const

            {

                // line only contains a single action, fail if subset

                // requests different range

                if( rSubset.mnSubsetBegin != 0 ||

                    rSubset.mnSubsetEnd != 1 )

                    return false;

                return render( rTransformation );

            }

            ::basegfx::B2DRange LineAction::getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const

            {

                rendering::RenderState aLocalState( maState );

                ::canvastools::prependToRenderState(aLocalState, rTransformation);

                return cppcanvastools::calcDevicePixelBounds( ::basegfx::B2DRange( maStartPoint,

                                                                          maEndPoint ),

                                                     mpCanvas->getViewState(),

                                                     aLocalState );

            }

            ::basegfx::B2DRange LineAction::getBounds( const ::basegfx::B2DHomMatrix&   rTransformation,

                                                       const Subset&                    rSubset ) const

            {

                // line only contains a single action, empty bounds

                // if subset requests different range

                if( rSubset.mnSubsetBegin != 0 ||

                    rSubset.mnSubsetEnd != 1 )

                    return ::basegfx::B2DRange();

                return getBounds( rTransformation );

            }

            sal_Int32 LineAction::getActionCount() const

            {

                return 1;

            }

        }

        std::shared_ptr<Action> LineActionFactory::createLineAction( const ::basegfx::B2DPoint& rStartPoint,

                                                             const ::basegfx::B2DPoint& rEndPoint,

                                                             const CanvasSharedPtr&     rCanvas,

                                                             const OutDevState&         rState  )

        {

            return std::make_shared<LineAction>( rStartPoint,

                                                 rEndPoint,

                                                 rCanvas,

                                                 rState);

        }

}

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