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Diffstat (limited to 'drawinglayer/source/primitive2d/helplineprimitive2d.cxx')
| -rw-r--r-- | drawinglayer/source/primitive2d/helplineprimitive2d.cxx | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drawinglayer/source/primitive2d/helplineprimitive2d.cxx b/drawinglayer/source/primitive2d/helplineprimitive2d.cxx new file mode 100644 index 000000000..07d6a7f22 --- /dev/null +++ b/drawinglayer/source/primitive2d/helplineprimitive2d.cxx @@ -0,0 +1,186 @@ +/* -*- 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 <drawinglayer/primitive2d/helplineprimitive2d.hxx> +#include <basegfx/polygon/b2dpolygon.hxx> +#include <basegfx/polygon/b2dpolygonclipper.hxx> +#include <drawinglayer/geometry/viewinformation2d.hxx> +#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx> +#include <drawinglayer/primitive2d/PolygonMarkerPrimitive2D.hxx> + + +using namespace com::sun::star; + + +namespace drawinglayer::primitive2d +{ + void HelplinePrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const + { + if(rViewInformation.getViewport().isEmpty() || getDirection().equalZero()) + return; + + // position to view coordinates, DashLen and DashLen in logic + const basegfx::B2DPoint aViewPosition(rViewInformation.getObjectToViewTransformation() * getPosition()); + + switch(getStyle()) + { + default : // HelplineStyle2D::Point + { + const double fViewFixValue(15.0); + basegfx::B2DVector aNormalizedDirection(getDirection()); + aNormalizedDirection.normalize(); + aNormalizedDirection *= fViewFixValue; + const basegfx::B2DPoint aStartA(aViewPosition - aNormalizedDirection); + const basegfx::B2DPoint aEndA(aViewPosition + aNormalizedDirection); + basegfx::B2DPolygon aLineA; + aLineA.append(aStartA); + aLineA.append(aEndA); + aLineA.transform(rViewInformation.getInverseObjectToViewTransformation()); + rContainer.push_back(new PolygonMarkerPrimitive2D(aLineA, getRGBColA(), getRGBColB(), getDiscreteDashLength())); + + const basegfx::B2DVector aPerpendicularNormalizedDirection(basegfx::getPerpendicular(aNormalizedDirection)); + const basegfx::B2DPoint aStartB(aViewPosition - aPerpendicularNormalizedDirection); + const basegfx::B2DPoint aEndB(aViewPosition + aPerpendicularNormalizedDirection); + basegfx::B2DPolygon aLineB; + aLineB.append(aStartB); + aLineB.append(aEndB); + aLineB.transform(rViewInformation.getInverseObjectToViewTransformation()); + rContainer.push_back(new PolygonMarkerPrimitive2D(aLineB, getRGBColA(), getRGBColB(), getDiscreteDashLength())); + + break; + } + case HelplineStyle2D::Line : + { + basegfx::B2DPolygon aLine; + + if(basegfx::areParallel(getDirection(), basegfx::B2DVector(1.0, 0.0))) + { + // parallel to X-Axis, get cuts with Y-Axes + const double fCutA((rViewInformation.getDiscreteViewport().getMinX() - aViewPosition.getX()) / getDirection().getX()); + const double fCutB((rViewInformation.getDiscreteViewport().getMaxX() - aViewPosition.getX()) / getDirection().getX()); + const basegfx::B2DPoint aPosA(aViewPosition + (fCutA * getDirection())); + const basegfx::B2DPoint aPosB(aViewPosition + (fCutB * getDirection())); + const bool bBothLeft(aPosA.getX() < rViewInformation.getDiscreteViewport().getMinX() && aPosB.getX() < rViewInformation.getDiscreteViewport().getMinX()); + const bool bBothRight(aPosA.getX() > rViewInformation.getDiscreteViewport().getMaxX() && aPosB.getX() < rViewInformation.getDiscreteViewport().getMaxX()); + + if(!bBothLeft && !bBothRight) + { + aLine.append(aPosA); + aLine.append(aPosB); + } + } + else + { + // get cuts with X-Axes + const double fCutA((rViewInformation.getDiscreteViewport().getMinY() - aViewPosition.getY()) / getDirection().getY()); + const double fCutB((rViewInformation.getDiscreteViewport().getMaxY() - aViewPosition.getY()) / getDirection().getY()); + const basegfx::B2DPoint aPosA(aViewPosition + (fCutA * getDirection())); + const basegfx::B2DPoint aPosB(aViewPosition + (fCutB * getDirection())); + const bool bBothAbove(aPosA.getY() < rViewInformation.getDiscreteViewport().getMinY() && aPosB.getY() < rViewInformation.getDiscreteViewport().getMinY()); + const bool bBothBelow(aPosA.getY() > rViewInformation.getDiscreteViewport().getMaxY() && aPosB.getY() < rViewInformation.getDiscreteViewport().getMaxY()); + + if(!bBothAbove && !bBothBelow) + { + aLine.append(aPosA); + aLine.append(aPosB); + } + } + + if(aLine.count()) + { + // clip against visible area + const basegfx::B2DPolyPolygon aResult(basegfx::utils::clipPolygonOnRange(aLine, rViewInformation.getDiscreteViewport(), true, true)); + + for(sal_uInt32 a(0); a < aResult.count(); a++) + { + basegfx::B2DPolygon aPart(aResult.getB2DPolygon(a)); + aPart.transform(rViewInformation.getInverseObjectToViewTransformation()); + rContainer.push_back(new PolygonMarkerPrimitive2D(aPart, getRGBColA(), getRGBColB(), getDiscreteDashLength())); + } + } + + break; + } + } + } + + HelplinePrimitive2D::HelplinePrimitive2D( + const basegfx::B2DPoint& rPosition, + const basegfx::B2DVector& rDirection, + HelplineStyle2D eStyle, + const basegfx::BColor& rRGBColA, + const basegfx::BColor& rRGBColB, + double fDiscreteDashLength) + : maPosition(rPosition), + maDirection(rDirection), + meStyle(eStyle), + maRGBColA(rRGBColA), + maRGBColB(rRGBColB), + mfDiscreteDashLength(fDiscreteDashLength) + { + } + + bool HelplinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const + { + if(BufferedDecompositionPrimitive2D::operator==(rPrimitive)) + { + const HelplinePrimitive2D& rCompare = static_cast<const HelplinePrimitive2D&>(rPrimitive); + + return (getPosition() == rCompare.getPosition() + && getDirection() == rCompare.getDirection() + && getStyle() == rCompare.getStyle() + && getRGBColA() == rCompare.getRGBColA() + && getRGBColB() == rCompare.getRGBColB() + && getDiscreteDashLength() == rCompare.getDiscreteDashLength()); + } + + return false; + } + + void HelplinePrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const + { + if(!getBuffered2DDecomposition().empty()) + { + if(maLastViewport != rViewInformation.getViewport() || maLastObjectToViewTransformation != rViewInformation.getObjectToViewTransformation()) + { + // conditions of last local decomposition have changed, delete + const_cast< HelplinePrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer()); + } + } + + if(getBuffered2DDecomposition().empty()) + { + // remember ViewRange and ViewTransformation + const_cast< HelplinePrimitive2D* >(this)->maLastObjectToViewTransformation = rViewInformation.getObjectToViewTransformation(); + const_cast< HelplinePrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport(); + } + + // use parent implementation + BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation); + } + + // provide unique ID + sal_uInt32 HelplinePrimitive2D::getPrimitive2DID() const + { + return PRIMITIVE2D_ID_HELPLINEPRIMITIVE2D; + } + +} // end of namespace + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |