222 lines
11 KiB
C++
222 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include <drawinglayer/primitive2d/helplineprimitive2d.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
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#include <basegfx/polygon/b2dpolygonclipper.hxx>
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#include <basegfx/tools/canvastools.hxx>
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#include <drawinglayer/geometry/viewinformation2d.hxx>
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#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
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//////////////////////////////////////////////////////////////////////////////
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using namespace com::sun::star;
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//////////////////////////////////////////////////////////////////////////////
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namespace drawinglayer
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{
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namespace primitive2d
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{
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Primitive2DSequence HelplinePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
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{
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std::vector< BasePrimitive2D* > aTempPrimitiveTarget;
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if(!rViewInformation.getViewport().isEmpty() && !getDirection().equalZero())
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{
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// position to view coordinates, DashLen and DashLen in logic
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const basegfx::B2DPoint aViewPosition(rViewInformation.getObjectToViewTransformation() * getPosition());
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switch(getStyle())
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{
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default : // HELPLINESTYLE2D_POINT
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{
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const double fViewFixValue(15.0);
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basegfx::B2DVector aNormalizedDirection(getDirection());
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aNormalizedDirection.normalize();
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aNormalizedDirection *= fViewFixValue;
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const basegfx::B2DPoint aStartA(aViewPosition - aNormalizedDirection);
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const basegfx::B2DPoint aEndA(aViewPosition + aNormalizedDirection);
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basegfx::B2DPolygon aLineA;
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aLineA.append(aStartA);
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aLineA.append(aEndA);
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aLineA.transform(rViewInformation.getInverseObjectToViewTransformation());
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PolygonMarkerPrimitive2D* pNewA = new PolygonMarkerPrimitive2D(aLineA, getRGBColA(), getRGBColB(), getDiscreteDashLength());
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aTempPrimitiveTarget.push_back(pNewA);
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const basegfx::B2DVector aPerpendicularNormalizedDirection(basegfx::getPerpendicular(aNormalizedDirection));
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const basegfx::B2DPoint aStartB(aViewPosition - aPerpendicularNormalizedDirection);
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const basegfx::B2DPoint aEndB(aViewPosition + aPerpendicularNormalizedDirection);
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basegfx::B2DPolygon aLineB;
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aLineB.append(aStartB);
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aLineB.append(aEndB);
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aLineB.transform(rViewInformation.getInverseObjectToViewTransformation());
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PolygonMarkerPrimitive2D* pNewB = new PolygonMarkerPrimitive2D(aLineB, getRGBColA(), getRGBColB(), getDiscreteDashLength());
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aTempPrimitiveTarget.push_back(pNewB);
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break;
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}
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case HELPLINESTYLE2D_LINE :
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{
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basegfx::B2DPolygon aLine;
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if(basegfx::areParallel(getDirection(), basegfx::B2DVector(1.0, 0.0)))
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{
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// parallel to X-Axis, get cuts with Y-Axes
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const double fCutA((rViewInformation.getDiscreteViewport().getMinX() - aViewPosition.getX()) / getDirection().getX());
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const double fCutB((rViewInformation.getDiscreteViewport().getMaxX() - aViewPosition.getX()) / getDirection().getX());
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const basegfx::B2DPoint aPosA(aViewPosition + (fCutA * getDirection()));
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const basegfx::B2DPoint aPosB(aViewPosition + (fCutB * getDirection()));
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const bool bBothLeft(aPosA.getX() < rViewInformation.getDiscreteViewport().getMinX() && aPosB.getX() < rViewInformation.getDiscreteViewport().getMinX());
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const bool bBothRight(aPosA.getX() > rViewInformation.getDiscreteViewport().getMaxX() && aPosB.getX() < rViewInformation.getDiscreteViewport().getMaxX());
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if(!bBothLeft && !bBothRight)
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{
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aLine.append(aPosA);
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aLine.append(aPosB);
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}
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}
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else
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{
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// get cuts with X-Axes
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const double fCutA((rViewInformation.getDiscreteViewport().getMinY() - aViewPosition.getY()) / getDirection().getY());
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const double fCutB((rViewInformation.getDiscreteViewport().getMaxY() - aViewPosition.getY()) / getDirection().getY());
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const basegfx::B2DPoint aPosA(aViewPosition + (fCutA * getDirection()));
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const basegfx::B2DPoint aPosB(aViewPosition + (fCutB * getDirection()));
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const bool bBothAbove(aPosA.getY() < rViewInformation.getDiscreteViewport().getMinY() && aPosB.getY() < rViewInformation.getDiscreteViewport().getMinY());
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const bool bBothBelow(aPosA.getY() > rViewInformation.getDiscreteViewport().getMaxY() && aPosB.getY() < rViewInformation.getDiscreteViewport().getMaxY());
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if(!bBothAbove && !bBothBelow)
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{
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aLine.append(aPosA);
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aLine.append(aPosB);
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}
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}
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if(aLine.count())
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{
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// clip against visible area
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const basegfx::B2DPolyPolygon aResult(basegfx::tools::clipPolygonOnRange(aLine, rViewInformation.getDiscreteViewport(), true, true));
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for(sal_uInt32 a(0L); a < aResult.count(); a++)
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{
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basegfx::B2DPolygon aPart(aResult.getB2DPolygon(a));
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aPart.transform(rViewInformation.getInverseObjectToViewTransformation());
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PolygonMarkerPrimitive2D* pNew = new PolygonMarkerPrimitive2D(aPart, getRGBColA(), getRGBColB(), getDiscreteDashLength());
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aTempPrimitiveTarget.push_back(pNew);
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}
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}
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break;
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}
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}
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}
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// prepare return value
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Primitive2DSequence aRetval(aTempPrimitiveTarget.size());
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for(sal_uInt32 a(0L); a < aTempPrimitiveTarget.size(); a++)
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{
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const Primitive2DReference xRef(aTempPrimitiveTarget[a]);
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aRetval[a] = xRef;
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}
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return aRetval;
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}
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HelplinePrimitive2D::HelplinePrimitive2D(
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const basegfx::B2DPoint& rPosition,
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const basegfx::B2DVector& rDirection,
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HelplineStyle2D eStyle,
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const basegfx::BColor& rRGBColA,
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const basegfx::BColor& rRGBColB,
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double fDiscreteDashLength)
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: BufferedDecompositionPrimitive2D(),
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maPosition(rPosition),
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maDirection(rDirection),
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meStyle(eStyle),
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maRGBColA(rRGBColA),
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maRGBColB(rRGBColB),
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mfDiscreteDashLength(fDiscreteDashLength),
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maLastObjectToViewTransformation(),
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maLastViewport()
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{
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}
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bool HelplinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
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{
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if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
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{
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const HelplinePrimitive2D& rCompare = (HelplinePrimitive2D&)rPrimitive;
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return (getPosition() == rCompare.getPosition()
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&& getDirection() == rCompare.getDirection()
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&& getStyle() == rCompare.getStyle()
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&& getRGBColA() == rCompare.getRGBColA()
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&& getRGBColB() == rCompare.getRGBColB()
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&& getDiscreteDashLength() == rCompare.getDiscreteDashLength());
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}
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return false;
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}
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Primitive2DSequence HelplinePrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if(getBuffered2DDecomposition().hasElements())
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{
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if(maLastViewport != rViewInformation.getViewport() || maLastObjectToViewTransformation != rViewInformation.getObjectToViewTransformation())
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{
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// conditions of last local decomposition have changed, delete
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const_cast< HelplinePrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DSequence());
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}
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}
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if(!getBuffered2DDecomposition().hasElements())
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{
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// remember ViewRange and ViewTransformation
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const_cast< HelplinePrimitive2D* >(this)->maLastObjectToViewTransformation = rViewInformation.getObjectToViewTransformation();
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const_cast< HelplinePrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport();
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}
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// use parent implementation
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return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
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}
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// provide unique ID
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ImplPrimitrive2DIDBlock(HelplinePrimitive2D, PRIMITIVE2D_ID_HELPLINEPRIMITIVE2D)
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} // end of namespace primitive2d
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} // end of namespace drawinglayer
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//////////////////////////////////////////////////////////////////////////////
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// eof
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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