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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/borderlineprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
#include <numeric>

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

namespace drawinglayer
{
	namespace primitive2d
	{
		Primitive2DSequence BorderLinePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
		{
			Primitive2DSequence xRetval;

			if(!getStart().equal(getEnd()) && (getCreateInside() || getCreateOutside()))
			{
				if(isInsideUsed())
				{
					// get data and vectors
					const double fWidth(getWidth());
					basegfx::B2DVector aVector(getEnd() - getStart());
					aVector.normalize();
					const basegfx::B2DVector aPerpendicular(basegfx::getPerpendicular(aVector));

					if(isOutsideUsed())
					{
						// both used, double line definition. Create left and right offset
						xRetval.realloc(getCreateInside() && getCreateOutside() ? 2 : 1);
						sal_uInt32 nInsert(0);

						if(getCreateInside())
						{
							// create geometry for left
							const basegfx::B2DVector aLeftOff(aPerpendicular * (0.5 * (getCorrectedLeftWidth() - fWidth)));
							const basegfx::B2DPoint aTmpStart(getStart() + aLeftOff - (getExtendInnerStart() * aVector));
							const basegfx::B2DPoint aTmpEnd(getEnd() + aLeftOff + (getExtendInnerEnd() * aVector));
							basegfx::B2DPolygon aLeft;

							if(leftIsHairline())
							{
								// create hairline primitive
								aLeft.append(aTmpStart);
								aLeft.append(aTmpEnd);

								xRetval[nInsert++] = Primitive2DReference(new PolygonHairlinePrimitive2D(
									aLeft, 
									getRGBColor()));
							}
							else
							{
								// create filled polygon primitive. Already tried to create thick lines
								// with the correct LineWidth, but this leads to problems when no AA
								// is available and fat line special case reductions between 0.5 < x < 2.5 line widths
								// are executed due to the FilledPolygon-do-not-paint-their-bottom-and-right-lines.
								const basegfx::B2DVector aLineWidthOffset((getCorrectedLeftWidth() * 0.5) * aPerpendicular);
								
								aLeft.append(aTmpStart + aLineWidthOffset);
								aLeft.append(aTmpEnd + aLineWidthOffset);
								aLeft.append(aTmpEnd - aLineWidthOffset);
								aLeft.append(aTmpStart - aLineWidthOffset);
								aLeft.setClosed(true);

								xRetval[nInsert++] = Primitive2DReference(new PolyPolygonColorPrimitive2D(
									basegfx::B2DPolyPolygon(aLeft), getRGBColor()));
							}
						}

						if(getCreateOutside())
						{
							// create geometry for right
							const basegfx::B2DVector aRightOff(aPerpendicular * (0.5 * (fWidth - getCorrectedRightWidth())));
							const basegfx::B2DPoint aTmpStart(getStart() + aRightOff - (getExtendOuterStart() * aVector));
							const basegfx::B2DPoint aTmpEnd(getEnd() + aRightOff + (getExtendOuterEnd() * aVector));
							basegfx::B2DPolygon aRight;

							if(rightIsHairline())
							{
								// create hairline primitive
								aRight.append(aTmpStart);
								aRight.append(aTmpEnd);
								
								xRetval[nInsert++] = Primitive2DReference(new PolygonHairlinePrimitive2D(
									aRight, 
									getRGBColor()));
							}
							else
							{
								// create filled polygon primitive
								const basegfx::B2DVector aLineWidthOffset((getCorrectedRightWidth() * 0.5) * aPerpendicular);

								aRight.append(aTmpStart + aLineWidthOffset);
								aRight.append(aTmpEnd + aLineWidthOffset);
								aRight.append(aTmpEnd - aLineWidthOffset);
								aRight.append(aTmpStart - aLineWidthOffset);
								aRight.setClosed(true);

								xRetval[nInsert++] = Primitive2DReference(new PolyPolygonColorPrimitive2D(
									basegfx::B2DPolyPolygon(aRight), getRGBColor()));
							}
						}
					}
					else
					{
						// single line, create geometry
						basegfx::B2DPolygon aPolygon;
						const double fMaxExtStart(::std::max(getExtendInnerStart(), getExtendOuterStart()));
						const double fMaxExtEnd(::std::max(getExtendInnerEnd(), getExtendOuterEnd()));
						const basegfx::B2DPoint aTmpStart(getStart() - (fMaxExtStart * aVector));
						const basegfx::B2DPoint aTmpEnd(getEnd() + (fMaxExtEnd * aVector));
						xRetval.realloc(1);

						if(leftIsHairline())
						{
							// create hairline primitive
							aPolygon.append(aTmpStart);
							aPolygon.append(aTmpEnd);

							xRetval[0] = Primitive2DReference(new PolygonHairlinePrimitive2D(
								aPolygon, 
								getRGBColor()));
						}
						else
						{
							// create filled polygon primitive
							const basegfx::B2DVector aLineWidthOffset((getCorrectedLeftWidth() * 0.5) * aPerpendicular);
							
							aPolygon.append(aTmpStart + aLineWidthOffset);
							aPolygon.append(aTmpEnd + aLineWidthOffset);
							aPolygon.append(aTmpEnd - aLineWidthOffset);
							aPolygon.append(aTmpStart - aLineWidthOffset);
							aPolygon.setClosed(true);

							xRetval[0] = Primitive2DReference(new PolyPolygonColorPrimitive2D(
								basegfx::B2DPolyPolygon(aPolygon), getRGBColor()));
						}
					}
				}
			}

			return xRetval;
		}

		BorderLinePrimitive2D::BorderLinePrimitive2D(
			const basegfx::B2DPoint& rStart,
			const basegfx::B2DPoint& rEnd,
			double fLeftWidth,
			double fDistance,
			double fRightWidth,
			double fExtendInnerStart,
			double fExtendInnerEnd,
			double fExtendOuterStart,
			double fExtendOuterEnd,
			bool bCreateInside,
			bool bCreateOutside,
			const basegfx::BColor& rRGBColor)
		:	BufferedDecompositionPrimitive2D(),
			maStart(rStart),
			maEnd(rEnd),
			mfLeftWidth(fLeftWidth),
			mfDistance(fDistance),
			mfRightWidth(fRightWidth),
			mfExtendInnerStart(fExtendInnerStart),
			mfExtendInnerEnd(fExtendInnerEnd),
			mfExtendOuterStart(fExtendOuterStart),
			mfExtendOuterEnd(fExtendOuterEnd),
			maRGBColor(rRGBColor),
			mbCreateInside(bCreateInside),
			mbCreateOutside(bCreateOutside)
		{
		}

		bool BorderLinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
		{
			if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
			{
				const BorderLinePrimitive2D& rCompare = (BorderLinePrimitive2D&)rPrimitive;

				return (getStart() == rCompare.getStart()
					&& getEnd() == rCompare.getEnd()
					&& getLeftWidth() == rCompare.getLeftWidth()
					&& getDistance() == rCompare.getDistance()
					&& getRightWidth() == rCompare.getRightWidth()
					&& getExtendInnerStart() == rCompare.getExtendInnerStart()
					&& getExtendInnerEnd() == rCompare.getExtendInnerEnd()
					&& getExtendOuterStart() == rCompare.getExtendOuterStart()
					&& getExtendOuterEnd() == rCompare.getExtendOuterEnd()
					&& getCreateInside() == rCompare.getCreateInside()
					&& getCreateOutside() == rCompare.getCreateOutside()
					&& getRGBColor() == rCompare.getRGBColor());
			}

			return false;
		}

		// provide unique ID
		ImplPrimitrive2DIDBlock(BorderLinePrimitive2D, PRIMITIVE2D_ID_BORDERLINEPRIMITIVE2D)

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

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