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 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"

#include <canvas/debug.hxx>
#include <tools/diagnose_ex.h>

#include <rtl/logfile.hxx>
#include <rtl/math.hxx>

#include <com/sun/star/rendering/TexturingMode.hpp>
#include <com/sun/star/rendering/CompositeOperation.hpp>
#include <com/sun/star/rendering/RepaintResult.hpp>
#include <com/sun/star/rendering/PathCapType.hpp>
#include <com/sun/star/rendering/PathJoinType.hpp>

#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/tools/canvastools.hxx>

#include <comphelper/sequence.hxx>
#include <canvas/canvastools.hxx>

#include "dx_spritecanvas.hxx"
#include "dx_impltools.hxx"
#include "dx_canvasfont.hxx"
#include "dx_textlayout.hxx"
#include "dx_bitmapcanvashelper.hxx"

#include <algorithm>


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

namespace dxcanvas
{
    BitmapCanvasHelper::BitmapCanvasHelper() :
        mpTarget()
    {}

    void BitmapCanvasHelper::disposing()
    {
        mpTarget.reset();
        CanvasHelper::disposing();
    }

    void BitmapCanvasHelper::setTarget( const IBitmapSharedPtr& rTarget )
    {
        ENSURE_OR_THROW( rTarget,
                          "BitmapCanvasHelper::setTarget(): Invalid target" );
        ENSURE_OR_THROW( !mpTarget.get(),
                          "BitmapCanvasHelper::setTarget(): target set, old target would be overwritten" );

        mpTarget = rTarget;
        CanvasHelper::setTarget(rTarget);
    }

    void BitmapCanvasHelper::setTarget( const IBitmapSharedPtr&   rTarget,
                                        const ::basegfx::B2ISize& rOutputOffset )
    {
        ENSURE_OR_THROW( rTarget,
                         "BitmapCanvasHelper::setTarget(): invalid target" );
        ENSURE_OR_THROW( !mpTarget.get(),
                         "BitmapCanvasHelper::setTarget(): target set, old target would be overwritten" );

        mpTarget = rTarget;
        CanvasHelper::setTarget(rTarget,rOutputOffset);
    }

    void BitmapCanvasHelper::clear()
    {
        if( needOutput() )
        {
            GraphicsSharedPtr pGraphics( mpTarget->getGraphics() );

            Gdiplus::Color aClearColor = hasAlpha() ? 
                Gdiplus::Color( 0,255,255,255 ) : Gdiplus::Color((Gdiplus::ARGB)Gdiplus::Color::White);

            ENSURE_OR_THROW(
                Gdiplus::Ok == pGraphics->SetCompositingMode( 
                    Gdiplus::CompositingModeSourceCopy ), // force set, don't blend
                "BitmapCanvasHelper::clear(): GDI+ SetCompositingMode call failed" );
            ENSURE_OR_THROW(
                Gdiplus::Ok == pGraphics->Clear( aClearColor ),
                "BitmapCanvasHelper::clear(): GDI+ Clear call failed" );
        }
    }

    uno::Reference< rendering::XCachedPrimitive > BitmapCanvasHelper::drawTextLayout( const rendering::XCanvas* 					  /*pCanvas*/, 
                                                                                      const uno::Reference< rendering::XTextLayout >& xLayoutetText, 
                                                                                      const rendering::ViewState& 					  viewState, 
                                                                                      const rendering::RenderState& 				  renderState )
    {
        ENSURE_OR_THROW( xLayoutetText.is(), 
                          "BitmapCanvasHelper::drawTextLayout: layout is NULL");

        if( needOutput() )
        {
			TextLayout* pTextLayout = 
                dynamic_cast< TextLayout* >( xLayoutetText.get() );

            ENSURE_OR_THROW( pTextLayout,
                                "BitmapCanvasHelper::drawTextLayout(): TextLayout not compatible with this canvas" );

			pTextLayout->draw( mpTarget->getGraphics(),
                               viewState, 
                               renderState, 
                               maOutputOffset, 
                               mpDevice,
                               mpTarget->hasAlpha() );
        }

        return uno::Reference< rendering::XCachedPrimitive >(NULL);
    }

    void BitmapCanvasHelper::copyRect( const rendering::XCanvas* 							/*pCanvas*/, 
                                       const uno::Reference< rendering::XBitmapCanvas >&	/*sourceCanvas*/, 
                                       const geometry::RealRectangle2D& 					/*sourceRect*/, 
                                       const rendering::ViewState& 							/*sourceViewState*/, 
                                       const rendering::RenderState& 						/*sourceRenderState*/, 
                                       const geometry::RealRectangle2D& 					/*destRect*/, 
                                       const rendering::ViewState& 							/*destViewState*/, 
                                       const rendering::RenderState& 						/*destRenderState*/ )
    {
        // TODO(F2): copyRect NYI
    }

    geometry::IntegerSize2D BitmapCanvasHelper::getSize()
    {
        if( !mpTarget )
            return geometry::IntegerSize2D(1, 1);

        return basegfx::unotools::integerSize2DFromB2ISize(mpTarget->getSize());
    }

    uno::Reference< rendering::XBitmap > BitmapCanvasHelper::getScaledBitmap( const geometry::RealSize2D& /*newSize*/, 
                                                                              sal_Bool 					  /*beFast*/ )
    {
        // TODO(F1):
        return uno::Reference< rendering::XBitmap >();
    }

    uno::Sequence< sal_Int8 > BitmapCanvasHelper::getData( rendering::IntegerBitmapLayout&     bitmapLayout, 
                                                           const geometry::IntegerRectangle2D& rect )
    {
        RTL_LOGFILE_CONTEXT( aLog, "::dxcanvas::BitmapCanvasHelper::getData()" );

        ENSURE_OR_THROW( mpTarget,
                          "::dxcanvas::BitmapCanvasHelper::getData(): disposed" );

		if( !mpTarget )
	        return uno::Sequence< sal_Int8 >();
	
		bitmapLayout = getMemoryLayout();
		return mpTarget->getData(bitmapLayout,rect);
    }

    void BitmapCanvasHelper::setData( const uno::Sequence< sal_Int8 >& 		data, 
                                      const rendering::IntegerBitmapLayout& bitmapLayout, 
                                      const geometry::IntegerRectangle2D& 	rect )
    {
        RTL_LOGFILE_CONTEXT( aLog, "::dxcanvas::BitmapCanvasHelper::setData()" );

        ENSURE_OR_THROW( mpTarget,
                          "::dxcanvas::BitmapCanvasHelper::setData(): disposed" );

		if( !mpTarget )
			return;

		mpTarget->setData(data,bitmapLayout,rect);
    }

    void BitmapCanvasHelper::setPixel( const uno::Sequence< sal_Int8 >&       color, 
                                       const rendering::IntegerBitmapLayout&  bitmapLayout, 
                                       const geometry::IntegerPoint2D&        pos )
    {
        RTL_LOGFILE_CONTEXT( aLog, "::dxcanvas::BitmapCanvasHelper::setPixel()" );

        ENSURE_OR_THROW( mpTarget,
                          "::dxcanvas::BitmapCanvasHelper::setPixel(): disposed" );

		if( !mpTarget )
			return;

		mpTarget->setPixel(color,bitmapLayout,pos);
    }

    uno::Sequence< sal_Int8 > BitmapCanvasHelper::getPixel( rendering::IntegerBitmapLayout&   bitmapLayout, 
                                                            const geometry::IntegerPoint2D&   pos )
    {
        RTL_LOGFILE_CONTEXT( aLog, "::dxcanvas::BitmapCanvasHelper::getPixel()" );

        ENSURE_OR_THROW( mpTarget,
                          "::dxcanvas::BitmapCanvasHelper::getPixel(): disposed" );

		if( !mpTarget )
			return uno::Sequence< sal_Int8 >();

		bitmapLayout = getMemoryLayout();
		return mpTarget->getPixel(bitmapLayout,pos);
    }

    uno::Reference< rendering::XBitmapPalette > BitmapCanvasHelper::getPalette()
    {
        // TODO(F1): Palette bitmaps NYI
        return uno::Reference< rendering::XBitmapPalette >();
    }

    rendering::IntegerBitmapLayout BitmapCanvasHelper::getMemoryLayout()
    {
        if( !mpTarget )
            return rendering::IntegerBitmapLayout(); // we're disposed

        return ::canvas::tools::getStdMemoryLayout(getSize());
    }
    bool BitmapCanvasHelper::hasAlpha() const
    {
		return mpTarget ? mpTarget->hasAlpha() : false;
    }
}