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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"

#include <drawinglayer/primitive2d/backgroundcolorprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

//////////////////////////////////////////////////////////////////////////////

using namespace com::sun::star;

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace primitive2d
	{
		Primitive2DSequence BackgroundColorPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
		{
			if(!rViewInformation.getViewport().isEmpty())
			{
				const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(rViewInformation.getViewport()));
				const Primitive2DReference xRef(new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aOutline), getBColor()));
				return Primitive2DSequence(&xRef, 1L);
			}
			else
			{
				return Primitive2DSequence();
			}
		}

		BackgroundColorPrimitive2D::BackgroundColorPrimitive2D(
			const basegfx::BColor& rBColor)
		:	BufferedDecompositionPrimitive2D(),
			maBColor(rBColor),
			maLastViewport()
		{
		}

		bool BackgroundColorPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
		{
			if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
			{
				const BackgroundColorPrimitive2D& rCompare = (BackgroundColorPrimitive2D&)rPrimitive;

				return (getBColor() == rCompare.getBColor());
			}

			return false;
		}

		basegfx::B2DRange BackgroundColorPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
		{
			// always as big as the view
			return rViewInformation.getViewport();
		}

		Primitive2DSequence BackgroundColorPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
		{ 
			::osl::MutexGuard aGuard( m_aMutex );

			if(getBuffered2DDecomposition().hasElements() && (maLastViewport != rViewInformation.getViewport()))
			{
				// conditions of last local decomposition have changed, delete
				const_cast< BackgroundColorPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DSequence());
			}

			if(!getBuffered2DDecomposition().hasElements())
			{
				// remember ViewRange
				const_cast< BackgroundColorPrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport();
			}

			// use parent implementation
			return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
		}

		// provide unique ID
		ImplPrimitrive2DIDBlock(BackgroundColorPrimitive2D, PRIMITIVE2D_ID_BACKGROUNDCOLORPRIMITIVE2D)

	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// eof