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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/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/borderlineprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygonclipper.hxx>
#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
#include <svtools/borderhelper.hxx>
#include <numeric>
#include <algorithm>
namespace drawinglayer {
namespace {
void moveLine(basegfx::B2DPolygon& rPoly, double fGap, const basegfx::B2DVector& rVector)
{
if (basegfx::fTools::equalZero(rVector.getX()))
{
basegfx::B2DHomMatrix aMat(1, 0, fGap, 0, 1, 0);
rPoly.transform(aMat);
}
else if (basegfx::fTools::equalZero(rVector.getY()))
{
basegfx::B2DHomMatrix aMat(1, 0, 0, 0, 1, fGap);
rPoly.transform(aMat);
}
}
primitive2d::Primitive2DReference makeHairLinePrimitive(
const basegfx::B2DPoint& rStart, const basegfx::B2DPoint& rEnd, const basegfx::B2DVector& rVector,
const basegfx::BColor& rColor, double fGap)
{
basegfx::B2DPolygon aPolygon;
aPolygon.append(rStart);
aPolygon.append(rEnd);
moveLine(aPolygon, fGap, rVector);
return primitive2d::Primitive2DReference(new primitive2d::PolygonHairlinePrimitive2D(aPolygon, rColor));
}
primitive2d::Primitive2DReference makeSolidLinePrimitive(
const basegfx::B2DPolyPolygon& rClipRegion, const basegfx::B2DPoint& rStart, const basegfx::B2DPoint& rEnd,
const basegfx::B2DVector& rVector, const basegfx::BColor& rColor, double fLineWidth, double fGap)
{
const basegfx::B2DVector aPerpendicular = basegfx::getPerpendicular(rVector);
const basegfx::B2DVector aLineWidthOffset = ((fLineWidth + 1.0) * 0.5) * aPerpendicular;
basegfx::B2DPolygon aPolygon;
aPolygon.append(rStart + aLineWidthOffset);
aPolygon.append(rEnd + aLineWidthOffset);
aPolygon.append(rEnd - aLineWidthOffset);
aPolygon.append(rStart - aLineWidthOffset);
aPolygon.setClosed(true);
moveLine(aPolygon, fGap, rVector);
basegfx::B2DPolyPolygon aClipped =
basegfx::tools::clipPolygonOnPolyPolygon(aPolygon, rClipRegion, true, false);
if (aClipped.count())
aPolygon = aClipped.getB2DPolygon(0);
return primitive2d::Primitive2DReference(
new primitive2d::PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aPolygon), rColor));
}
}
// fdo#49438: heuristic pseudo hack
static bool lcl_UseHairline(double const fW,
basegfx::B2DPoint const& rStart, basegfx::B2DPoint const& rEnd,
geometry::ViewInformation2D const& rViewInformation)
{
basegfx::B2DTuple scale;
basegfx::B2DTuple translation;
double fRotation;
double fShear;
rViewInformation.getObjectToViewTransformation().decompose(
scale, translation, fRotation, fShear);
double const fScale(
(rEnd.getX() - rStart.getX() > rEnd.getY() - rStart.getY())
? scale.getY() : scale.getX());
return (fW * fScale < 0.51);
}
static double lcl_GetCorrectedWidth(double const fW,
basegfx::B2DPoint const& rStart, basegfx::B2DPoint const& rEnd,
geometry::ViewInformation2D const& rViewInformation)
{
return (lcl_UseHairline(fW, rStart, rEnd, rViewInformation)) ? 0.0 : fW;
}
namespace primitive2d
{
double BorderLinePrimitive2D::getWidth(
geometry::ViewInformation2D const& rViewInformation) const
{
return lcl_GetCorrectedWidth(mfLeftWidth, getStart(), getEnd(),
rViewInformation)
+ lcl_GetCorrectedWidth(mfDistance, getStart(), getEnd(),
rViewInformation)
+ lcl_GetCorrectedWidth(mfRightWidth, getStart(), getEnd(),
rViewInformation);
}
basegfx::B2DPolyPolygon BorderLinePrimitive2D::getClipPolygon(
geometry::ViewInformation2D const& rViewInformation) const
{
basegfx::B2DPolygon clipPolygon;
// Get the vectors
basegfx::B2DVector aVector( getEnd() - getStart() );
aVector.normalize();
const basegfx::B2DVector aPerpendicular(basegfx::getPerpendicular(aVector));
// Get the points
const double fWidth(getWidth(rViewInformation));
const basegfx::B2DVector aLeftOff(
aPerpendicular * (-0.5 * std::max(fWidth, 1.0)));
const basegfx::B2DVector aRightOff(
aPerpendicular * (0.5 * std::max(fWidth, 1.0)));
const basegfx::B2DVector aSLVector( aLeftOff - ( getExtendLeftStart() * aVector ) );
clipPolygon.append( basegfx::B2DPoint( getStart() + aSLVector * 2.0 ) );
clipPolygon.append( getStart( ) );
const basegfx::B2DVector aSRVector( aRightOff - ( getExtendRightStart() * aVector ) );
clipPolygon.append( basegfx::B2DPoint( getStart() + aSRVector * 2.0 ) );
const basegfx::B2DVector aERVector( aRightOff + ( getExtendRightEnd() * aVector ) );
clipPolygon.append( basegfx::B2DPoint( getEnd() + aERVector * 2.0 ) );
clipPolygon.append( getEnd( ) );
const basegfx::B2DVector aELVector( aLeftOff + ( getExtendLeftEnd() * aVector ) );
clipPolygon.append( basegfx::B2DPoint( getEnd() + aELVector * 2.0 ) );
clipPolygon.setClosed( true );
return basegfx::B2DPolyPolygon( clipPolygon );
}
Primitive2DSequence BorderLinePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
Primitive2DSequence xRetval;
if(!getStart().equal(getEnd()) && ( isInsideUsed() || isOutsideUsed() ) )
{
// get data and vectors
basegfx::B2DVector aVector(getEnd() - getStart());
aVector.normalize();
const basegfx::B2DVector aPerpendicular(basegfx::getPerpendicular(aVector));
const basegfx::B2DPolyPolygon& aClipRegion =
getClipPolygon(rViewInformation);
if(isOutsideUsed() && isInsideUsed())
{
const double fExt = getWidth(rViewInformation); // Extend a lot: it'll be clipped later.
const basegfx::B2DPoint aTmpStart(getStart() - (fExt * aVector));
const basegfx::B2DPoint aTmpEnd(getEnd() + (fExt * aVector));
xRetval.realloc(2);
double fLeftWidth = getLeftWidth();
bool bLeftHairline = lcl_UseHairline(fLeftWidth, getStart(), getEnd(), rViewInformation);
if (bLeftHairline)
fLeftWidth = 0.0;
double fRightWidth = getRightWidth();
bool bRightHairline = lcl_UseHairline(fRightWidth, getStart(), getEnd(), rViewInformation);
if (bRightHairline)
fRightWidth = 0.0;
// "inside" line
if (bLeftHairline)
xRetval[0] = makeHairLinePrimitive(
getStart(), getEnd(), aVector, getRGBColorLeft(), 0.0);
else
xRetval[0] = makeSolidLinePrimitive(
aClipRegion, aTmpStart, aTmpEnd, aVector, getRGBColorLeft(), fLeftWidth, 0.0);
// "outside" line
if (bRightHairline)
xRetval[1] = makeHairLinePrimitive(
getStart(), getEnd(), aVector, getRGBColorRight(), fLeftWidth+mfDistance);
else
xRetval[1] = makeSolidLinePrimitive(
aClipRegion, aTmpStart, aTmpEnd, aVector, getRGBColorRight(), fRightWidth, fLeftWidth+mfDistance);
}
else
{
// single line, create geometry
basegfx::B2DPolygon aPolygon;
const double fExt = getWidth(rViewInformation); // Extend a lot: it'll be clipped after
const basegfx::B2DPoint aTmpStart(getStart() - (fExt * aVector));
const basegfx::B2DPoint aTmpEnd(getEnd() + (fExt * aVector));
// Get which is the line to show
bool bIsSolidline = isSolidLine();
double nWidth = getLeftWidth();
basegfx::BColor aColor = getRGBColorLeft();
if ( basegfx::fTools::equal( 0.0, mfLeftWidth ) )
{
nWidth = getRightWidth();
aColor = getRGBColorRight();
}
bool const bIsHairline = lcl_UseHairline(
nWidth, getStart(), getEnd(), rViewInformation);
nWidth = lcl_GetCorrectedWidth(nWidth,
getStart(), getEnd(), rViewInformation);
if(bIsHairline && bIsSolidline)
{
// create hairline primitive
aPolygon.append( getStart() );
aPolygon.append( getEnd() );
xRetval.realloc(1);
xRetval[0] = Primitive2DReference(new PolygonHairlinePrimitive2D(
aPolygon,
aColor));
}
else
{
// create filled polygon primitive
const basegfx::B2DVector aLineWidthOffset(((nWidth + 1) * 0.5) * aPerpendicular);
aPolygon.append( aTmpStart );
aPolygon.append( aTmpEnd );
basegfx::B2DPolyPolygon aDashed =
svtools::ApplyLineDashing(aPolygon, getStyle(), mfPatternScale*10.0);
for (sal_uInt32 i = 0; i < aDashed.count(); i++ )
{
basegfx::B2DPolygon aDash = aDashed.getB2DPolygon( i );
basegfx::B2DPoint aDashStart = aDash.getB2DPoint( 0 );
basegfx::B2DPoint aDashEnd = aDash.getB2DPoint( aDash.count() - 1 );
basegfx::B2DPolygon aDashPolygon;
aDashPolygon.append( aDashStart + aLineWidthOffset );
aDashPolygon.append( aDashEnd + aLineWidthOffset );
aDashPolygon.append( aDashEnd - aLineWidthOffset );
aDashPolygon.append( aDashStart - aLineWidthOffset );
aDashPolygon.setClosed( true );
basegfx::B2DPolyPolygon aClipped = basegfx::tools::clipPolygonOnPolyPolygon(
aDashPolygon, aClipRegion, true, false );
if ( aClipped.count() )
aDashed.setB2DPolygon( i, aClipped.getB2DPolygon( 0 ) );
}
sal_uInt32 n = aDashed.count();
xRetval.realloc(n);
for (sal_uInt32 i = 0; i < n; ++i)
{
basegfx::B2DPolygon aDash = aDashed.getB2DPolygon(i);
if (bIsHairline)
{
// Convert a rectanglar polygon into a line.
basegfx::B2DPolygon aDash2;
basegfx::B2DRange aRange = aDash.getB2DRange();
aDash2.append(basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY()));
aDash2.append(basegfx::B2DPoint(aRange.getMaxX(), aRange.getMinY()));
xRetval[i] = Primitive2DReference(
new PolygonHairlinePrimitive2D(aDash2, aColor));
}
else
{
xRetval[i] = Primitive2DReference(
new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aDash), aColor));
}
}
}
}
}
return xRetval;
}
BorderLinePrimitive2D::BorderLinePrimitive2D(
const basegfx::B2DPoint& rStart,
const basegfx::B2DPoint& rEnd,
double fLeftWidth,
double fDistance,
double fRightWidth,
double fExtendLeftStart,
double fExtendLeftEnd,
double fExtendRightStart,
double fExtendRightEnd,
const basegfx::BColor& rRGBColorRight,
const basegfx::BColor& rRGBColorLeft,
const basegfx::BColor& rRGBColorGap,
bool bHasGapColor,
const short nStyle,
double fPatternScale)
: BufferedDecompositionPrimitive2D(),
maStart(rStart),
maEnd(rEnd),
mfLeftWidth(fLeftWidth),
mfDistance(fDistance),
mfRightWidth(fRightWidth),
mfExtendLeftStart(fExtendLeftStart),
mfExtendLeftEnd(fExtendLeftEnd),
mfExtendRightStart(fExtendRightStart),
mfExtendRightEnd(fExtendRightEnd),
maRGBColorRight(rRGBColorRight),
maRGBColorLeft(rRGBColorLeft),
maRGBColorGap(rRGBColorGap),
mbHasGapColor(bHasGapColor),
mnStyle(nStyle),
mfPatternScale(fPatternScale)
{
}
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()
&& getExtendLeftStart() == rCompare.getExtendLeftStart()
&& getExtendLeftEnd() == rCompare.getExtendLeftEnd()
&& getExtendRightStart() == rCompare.getExtendRightStart()
&& getExtendRightEnd() == rCompare.getExtendRightEnd()
&& getRGBColorRight() == rCompare.getRGBColorRight()
&& getRGBColorLeft() == rCompare.getRGBColorLeft()
&& getRGBColorGap() == rCompare.getRGBColorGap()
&& hasGapColor() == rCompare.hasGapColor()
&& getStyle() == rCompare.getStyle()
&& getPatternScale() == rCompare.getPatternScale());
}
return false;
}
// provide unique ID
ImplPrimitive2DIDBlock(BorderLinePrimitive2D, PRIMITIVE2D_ID_BORDERLINEPRIMITIVE2D)
} // end of namespace primitive2d
} // end of namespace drawinglayer
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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