/* -*- 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/XBitmap.hpp>

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

#include <vcl/bitmap.hxx>

#include <tools/gen.hxx>

#include <vcl/canvastools.hxx>

#include <canvas/canvastools.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>

#include <basegfx/point/b2dpoint.hxx>

#include <basegfx/range/b2drange.hxx>

#include <sal/log.hxx>

#include "cachedprimitivebase.hxx"

#include "bitmapaction.hxx"

#include <outdevstate.hxx>

#include "mtftools.hxx"

#include <basegfx/matrix/b2dhommatrixtools.hxx>

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

namespace cppcanvas::internal

{

        namespace

        {

            class BitmapAction : public CachedPrimitiveBase

            {

            public:

                BitmapAction( const ::Bitmap&,

                              const ::basegfx::B2DPoint& rDstPoint,

                              const CanvasSharedPtr&,

                              const OutDevState& );

                BitmapAction( const ::Bitmap&,

                              const ::basegfx::B2DPoint&  rDstPoint,

                              const ::basegfx::B2DVector& rDstSize,

                              const CanvasSharedPtr&,

                              const OutDevState& );

                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:

                using Action::render;

                virtual bool renderPrimitive( uno::Reference< rendering::XCachedPrimitive >& rCachedPrimitive,

                                              const ::basegfx::B2DHomMatrix&                 rTransformation ) const override;

                uno::Reference< rendering::XBitmap >                    mxBitmap;

                CanvasSharedPtr                                         mpCanvas;

                rendering::RenderState                                  maState;

            };

            BitmapAction::BitmapAction( const ::Bitmap&          rBmpEx,

                                        const ::basegfx::B2DPoint& rDstPoint,

                                        const CanvasSharedPtr&     rCanvas,

                                        const OutDevState&         rState ) :

                CachedPrimitiveBase( rCanvas, true ),

                mxBitmap( vcl::unotools::xBitmapFromBitmap( rBmpEx ) ),

                mpCanvas( rCanvas )

            {

                cppcanvastools::initRenderState(maState,rState);

                // Setup transformation such that the next render call is

                // moved rPoint away.

                const basegfx::B2DHomMatrix aLocalTransformation(basegfx::utils::createTranslateB2DHomMatrix(rDstPoint));

                ::canvastools::appendToRenderState( maState,

                                                      aLocalTransformation );

                // correct clip (which is relative to original transform)

                cppcanvastools::modifyClip( maState,

                                   rState,

                                   rCanvas,

                                   rDstPoint,

                                   nullptr,

                                   nullptr );

            }

            BitmapAction::BitmapAction( const ::Bitmap&           rBmp,

                                        const ::basegfx::B2DPoint&  rDstPoint,

                                        const ::basegfx::B2DVector& rDstSize,

                                        const CanvasSharedPtr&      rCanvas,

                                        const OutDevState&          rState      ) :

                CachedPrimitiveBase( rCanvas, true ),

                mxBitmap( vcl::unotools::xBitmapFromBitmap( rBmp ) ),

                mpCanvas( rCanvas )

            {

                cppcanvastools::initRenderState(maState,rState);

                // Setup transformation such that the next render call is

                // moved rPoint away, and scaled according to the ratio

                // given by src and dst size.

                const ::Size aBmpSize( rBmp.GetSizePixel() );

                const ::basegfx::B2DVector aScale( rDstSize.getX() / aBmpSize.Width(),

                                                   rDstSize.getY() / aBmpSize.Height() );

                const basegfx::B2DHomMatrix aLocalTransformation(basegfx::utils::createScaleTranslateB2DHomMatrix(

                    aScale, rDstPoint));

                ::canvastools::appendToRenderState( maState, aLocalTransformation );

                // correct clip (which is relative to original transform)

                cppcanvastools::modifyClip( maState,

                                   rState,

                                   rCanvas,

                                   rDstPoint,

                                   &aScale,

                                   nullptr );

            }

            bool BitmapAction::renderPrimitive( uno::Reference< rendering::XCachedPrimitive >& rCachedPrimitive,

                                                const ::basegfx::B2DHomMatrix&                 rTransformation ) const

            {

                SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::BitmapAction::renderPrimitive()" );

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

                rendering::RenderState aLocalState( maState );

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

                rCachedPrimitive = mpCanvas->getUNOCanvas()->drawBitmap( mxBitmap,

                                                                         mpCanvas->getViewState(),

                                                                         aLocalState );

                return true;

            }

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

                                             const Subset&                    rSubset ) const

            {

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

                // requests different range

                if( rSubset.mnSubsetBegin != 0 ||

                    rSubset.mnSubsetEnd != 1 )

                    return false;

                return CachedPrimitiveBase::render( rTransformation );

            }

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

            {

                rendering::RenderState aLocalState( maState );

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

                const geometry::IntegerSize2D aSize( mxBitmap->getSize() );

                return cppcanvastools::calcDevicePixelBounds( ::basegfx::B2DRange( 0,0,

                                                                          aSize.Width,

                                                                          aSize.Height ),

                                                     mpCanvas->getViewState(),

                                                     aLocalState );

            }

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

                                                         const Subset&                  rSubset ) const

            {

                // bitmap 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 BitmapAction::getActionCount() const

            {

                return 1;

            }

        }

        std::shared_ptr<Action> BitmapActionFactory::createBitmapAction( const ::Bitmap&          rBmp,

                                                                 const ::basegfx::B2DPoint& rDstPoint,

                                                                 const CanvasSharedPtr&     rCanvas,

                                                                 const OutDevState&         rState )

        {

            return std::make_shared<BitmapAction>(rBmp, rDstPoint, rCanvas, rState );

        }

        std::shared_ptr<Action> BitmapActionFactory::createBitmapAction( const ::Bitmap&           rBmp,

                                                                 const ::basegfx::B2DPoint&  rDstPoint,

                                                                 const ::basegfx::B2DVector& rDstSize,

                                                                 const CanvasSharedPtr&      rCanvas,

                                                                 const OutDevState&          rState )

        {

            return std::make_shared<BitmapAction>(rBmp,

                                                  rDstPoint,

                                                  rDstSize,

                                                  rCanvas,

                                                  rState );

        }

}

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