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/* -*- 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 <drawinglayer/primitive2d/polygonprimitive2d.hxx>
#include <basegfx/polygon/b2dpolygonclipper.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 HelplinePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
std::vector< BasePrimitive2D* > aTempPrimitiveTarget;
if(!rViewInformation.getViewport().isEmpty() && !getDirection().equalZero())
{
// 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());
PolygonMarkerPrimitive2D* pNewA = new PolygonMarkerPrimitive2D(aLineA, getRGBColA(), getRGBColB(), getDiscreteDashLength());
aTempPrimitiveTarget.push_back(pNewA);
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());
PolygonMarkerPrimitive2D* pNewB = new PolygonMarkerPrimitive2D(aLineB, getRGBColA(), getRGBColB(), getDiscreteDashLength());
aTempPrimitiveTarget.push_back(pNewB);
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::tools::clipPolygonOnRange(aLine, rViewInformation.getDiscreteViewport(), true, true));
for(sal_uInt32 a(0L); a < aResult.count(); a++)
{
basegfx::B2DPolygon aPart(aResult.getB2DPolygon(a));
aPart.transform(rViewInformation.getInverseObjectToViewTransformation());
PolygonMarkerPrimitive2D* pNew = new PolygonMarkerPrimitive2D(aPart, getRGBColA(), getRGBColB(), getDiscreteDashLength());
aTempPrimitiveTarget.push_back(pNew);
}
}
break;
}
}
}
// prepare return value
Primitive2DSequence aRetval(aTempPrimitiveTarget.size());
for(sal_uInt32 a(0L); a < aTempPrimitiveTarget.size(); a++)
{
const Primitive2DReference xRef(aTempPrimitiveTarget[a]);
aRetval[a] = xRef;
}
return aRetval;
}
HelplinePrimitive2D::HelplinePrimitive2D(
const basegfx::B2DPoint& rPosition,
const basegfx::B2DVector& rDirection,
HelplineStyle2D eStyle,
const basegfx::BColor& rRGBColA,
const basegfx::BColor& rRGBColB,
double fDiscreteDashLength)
: BufferedDecompositionPrimitive2D(),
maPosition(rPosition),
maDirection(rDirection),
meStyle(eStyle),
maRGBColA(rRGBColA),
maRGBColB(rRGBColB),
mfDiscreteDashLength(fDiscreteDashLength),
maLastObjectToViewTransformation(),
maLastViewport()
{
}
bool HelplinePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
{
if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
{
const HelplinePrimitive2D& rCompare = (HelplinePrimitive2D&)rPrimitive;
return (getPosition() == rCompare.getPosition()
&& getDirection() == rCompare.getDirection()
&& getStyle() == rCompare.getStyle()
&& getRGBColA() == rCompare.getRGBColA()
&& getRGBColB() == rCompare.getRGBColB()
&& getDiscreteDashLength() == rCompare.getDiscreteDashLength());
}
return false;
}
Primitive2DSequence HelplinePrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
::osl::MutexGuard aGuard( m_aMutex );
if(getBuffered2DDecomposition().hasElements())
{
if(maLastViewport != rViewInformation.getViewport() || maLastObjectToViewTransformation != rViewInformation.getObjectToViewTransformation())
{
// conditions of last local decomposition have changed, delete
const_cast< HelplinePrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DSequence());
}
}
if(!getBuffered2DDecomposition().hasElements())
{
// remember ViewRange and ViewTransformation
const_cast< HelplinePrimitive2D* >(this)->maLastObjectToViewTransformation = rViewInformation.getObjectToViewTransformation();
const_cast< HelplinePrimitive2D* >(this)->maLastViewport = rViewInformation.getViewport();
}
// use parent implementation
return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
}
// provide unique ID
ImplPrimitrive2DIDBlock(HelplinePrimitive2D, PRIMITIVE2D_ID_HELPLINEPRIMITIVE2D)
} // end of namespace primitive2d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
// eof
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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