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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 <comphelper/diagnose_ex.hxx>
#include <com/sun/star/rendering/XCanvas.hpp>
#include <basegfx/utils/canvastools.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/vector/b2dvector.hxx>
#include <canvas/canvastools.hxx>
#include <rtl/math.hxx>
#include <vcl/canvastools.hxx>
#include <vcl/virdev.hxx>
#include <vcl/metric.hxx>
#include "mtftools.hxx"
#include <outdevstate.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
using namespace ::com::sun::star;
namespace cppcanvas::tools
{
void initRenderState( rendering::RenderState& renderState,
const ::cppcanvas::internal::OutDevState& outdevState )
{
::canvas::tools::initRenderState( renderState );
::canvas::tools::setRenderStateTransform( renderState,
outdevState.transform );
renderState.Clip = outdevState.xClipPoly;
}
::Size getBaselineOffset( const ::cppcanvas::internal::OutDevState& outdevState,
const VirtualDevice& rVDev )
{
const ::FontMetric& aMetric = rVDev.GetFontMetric();
// calc offset for text output, the XCanvas always renders
// baseline offset.
switch( outdevState.textReferencePoint )
{
case ALIGN_TOP:
return ::Size( 0,
aMetric.GetInternalLeading() + aMetric.GetAscent() );
case ALIGN_BASELINE:
return ::Size( 0, 0 );
case ALIGN_BOTTOM:
return ::Size( 0,
-aMetric.GetDescent() );
default:
throw css::uno::RuntimeException(
u"tools::getBaselineOffset(): Unexpected TextAlign value"_ustr );
}
}
::basegfx::B2DHomMatrix& calcLogic2PixelLinearTransform( ::basegfx::B2DHomMatrix& o_rMatrix,
const VirtualDevice& rVDev )
{
// select size value in the middle of the available range,
// to have headroom both when map mode scales up, and when
// it scales down.
const ::Size aSizeLogic( 0x00010000L,
0x00010000L );
const ::Size aSizePixel( rVDev.LogicToPixel( aSizeLogic ) );
o_rMatrix = basegfx::utils::createScaleB2DHomMatrix(
aSizePixel.Width() / static_cast<double>(aSizeLogic.Width()),
aSizePixel.Height() / static_cast<double>(aSizeLogic.Height()) );
return o_rMatrix;
}
::basegfx::B2DHomMatrix& calcLogic2PixelAffineTransform( ::basegfx::B2DHomMatrix& o_rMatrix,
const VirtualDevice& rVDev )
{
// retrieves scale
calcLogic2PixelLinearTransform(o_rMatrix, rVDev);
// translate according to curr map mode/pref map mode offset
const ::Point aEmptyPoint;
const ::Point& rTranslatedPoint(
rVDev.LogicToPixel( aEmptyPoint ));
o_rMatrix.translate(rTranslatedPoint.X(),
rTranslatedPoint.Y());
return o_rMatrix;
}
bool modifyClip( rendering::RenderState& o_rRenderState,
const struct ::cppcanvas::internal::OutDevState& rOutdevState,
const CanvasSharedPtr& rCanvas,
const ::basegfx::B2DPoint& rOffset,
const ::basegfx::B2DVector* pScaling,
const double* pRotation )
{
const bool bOffsetting( !rOffset.equalZero() );
const bool bScaling( pScaling &&
!rtl::math::approxEqual(pScaling->getX(), 1.0) &&
!rtl::math::approxEqual(pScaling->getY(), 1.0) );
const bool bRotation( pRotation &&
*pRotation != 0.0 );
if( !bOffsetting && !bScaling && !bRotation )
return false; // nothing to do
if( rOutdevState.clip.count() )
{
// general polygon case
::basegfx::B2DPolyPolygon aLocalClip( rOutdevState.clip );
::basegfx::B2DHomMatrix aTransform;
if( bOffsetting )
aTransform.translate( -rOffset.getX(),
-rOffset.getY() );
if( bScaling )
aTransform.scale( 1.0/pScaling->getX(), 1.0/pScaling->getY() );
if( bRotation )
aTransform.rotate( - *pRotation );
aLocalClip.transform( aTransform );
o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
rCanvas->getUNOCanvas()->getDevice(),
aLocalClip );
return true;
}
else if( !rOutdevState.clipRect.IsEmpty() )
{
// simple rect case
const ::tools::Rectangle aLocalClipRect( rOutdevState.clipRect );
if( bRotation )
{
// rotation involved - convert to polygon first,
// then transform that
::basegfx::B2DPolygon aLocalClip(
::basegfx::utils::createPolygonFromRect(
vcl::unotools::b2DRectangleFromRectangle(aLocalClipRect) ) );
::basegfx::B2DHomMatrix aTransform;
if( bOffsetting )
aTransform.translate( -rOffset.getX(),
-rOffset.getY() );
if( bScaling )
aTransform.scale( 1.0/pScaling->getX(), 1.0/pScaling->getY() );
aTransform.rotate( - *pRotation );
aLocalClip.transform( aTransform );
o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
rCanvas->getUNOCanvas()->getDevice(),
::basegfx::B2DPolyPolygon( aLocalClip ) );
}
else if( bScaling )
{
// scale and offset - do it on the fly, have to
// convert to float anyway.
o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
rCanvas->getUNOCanvas()->getDevice(),
::basegfx::B2DPolyPolygon(
::basegfx::utils::createPolygonFromRect(
::basegfx::B2DRectangle(
(aLocalClipRect.Left() - rOffset.getX())/pScaling->getX(),
(aLocalClipRect.Top() - rOffset.getY())/pScaling->getY(),
(aLocalClipRect.Right() - rOffset.getX())/pScaling->getX(),
(aLocalClipRect.Bottom() - rOffset.getY())/pScaling->getY() ) ) ) );
}
else
{
// offset only - do it on the fly, have to convert
// to float anyway.
o_rRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
rCanvas->getUNOCanvas()->getDevice(),
::basegfx::B2DPolyPolygon(
::basegfx::utils::createPolygonFromRect(
::basegfx::B2DRectangle( aLocalClipRect.Left() - rOffset.getX(),
aLocalClipRect.Top() - rOffset.getY(),
aLocalClipRect.Right() - rOffset.getX(),
aLocalClipRect.Bottom() - rOffset.getY() ) ) ) );
}
return true;
}
// empty clip, nothing to do
return false;
}
// create overline/underline/strikeout line info struct
TextLineInfo createTextLineInfo( const ::VirtualDevice& rVDev,
const ::cppcanvas::internal::OutDevState& rState )
{
const bool bOldMode( rVDev.IsMapModeEnabled() );
// #i68512# Force metric regeneration with mapmode enabled
// (prolly OutDev bug)
rVDev.GetFontMetric();
// will restore map mode below
const_cast< ::VirtualDevice& >(rVDev).EnableMapMode( false );
const ::FontMetric aMetric = rVDev.GetFontMetric();
TextLineInfo aTextInfo(
(aMetric.GetDescent() + 2) / 4.0,
((aMetric.GetInternalLeading() + 1.5) / 3.0),
(aMetric.GetInternalLeading() / 2.0) - aMetric.GetAscent(),
aMetric.GetDescent() / 2.0,
(aMetric.GetInternalLeading() - aMetric.GetAscent()) / 3.0,
rState.textOverlineStyle,
rState.textUnderlineStyle,
rState.textStrikeoutStyle );
const_cast< ::VirtualDevice& >(rVDev).EnableMapMode( bOldMode );
return aTextInfo;
}
namespace
{
void appendWaveline( ::basegfx::B2DPolyPolygon& o_rPoly,
const ::basegfx::B2DPoint& rStartPos,
const double nStartOffset,
const double nWidth,
const double nHeight,
sal_Int8 nLineStyle)
{
const double x(rStartPos.getX());
const double y(rStartPos.getY() + nStartOffset + nHeight);
double nWaveWidth = nHeight * 10.6 * 0.25;
// Offset for the double line.
double nOffset = 0.0;
if (nLineStyle == LINESTYLE_DOUBLEWAVE)
nOffset = -nHeight * 0.5;
else
nWaveWidth *= 2.0;
basegfx::B2DPolygon aLine;
aLine.append(basegfx::B2DPoint(x, y + nOffset));
aLine.append(basegfx::B2DPoint(x + nWidth, y + nOffset));
o_rPoly.append(::basegfx::utils::createWaveline(aLine, nWaveWidth, nWaveWidth * 0.5));
if (nLineStyle == LINESTYLE_DOUBLEWAVE)
{
nOffset = nHeight * 1.2;
basegfx::B2DPolygon aLine2;
aLine2.append(basegfx::B2DPoint(x, y + nOffset));
aLine2.append(basegfx::B2DPoint(x + nWidth, y + nOffset));
o_rPoly.append(::basegfx::utils::createWaveline(aLine2, nWaveWidth, nWaveWidth * 0.5));
}
}
void appendRect( ::basegfx::B2DPolyPolygon& o_rPoly,
const ::basegfx::B2DPoint& rStartPos,
const double nX1,
const double nY1,
const double nX2,
const double nY2 )
{
const double x( rStartPos.getX() );
const double y( rStartPos.getY() );
o_rPoly.append(
::basegfx::utils::createPolygonFromRect(
::basegfx::B2DRectangle( x + nX1, y + nY1, x + nX2, y + nY2 ) ) );
}
void appendRect( ::basegfx::B2DPolyPolygon& o_rPoly,
const double nX1,
const double nY1,
const double nX2,
const double nY2 )
{
o_rPoly.append(
::basegfx::utils::createPolygonFromRect(
::basegfx::B2DRectangle( nX1, nY1, nX2, nY2 ) ) );
}
bool appendDashes( ::basegfx::B2DPolyPolygon& o_rPoly,
const double nX,
double nY,
const double nLineWidth,
double nLineHeight,
sal_Int8 nLineStyle,
bool bIsOverline)
{
static const int aDottedArray[] = { 1, 1, 0}; // DOTTED LINE
static const int aDotDashArray[] = { 1, 1, 4, 1, 0}; // DASHDOT
static const int aDashDotDotArray[] = { 1, 1, 1, 1, 4, 1, 0}; // DASHDOTDOT
static const int aDashedArray[] = { 5, 2, 0}; // DASHED LINE
static const int aLongDashArray[] = { 7, 2, 0}; // LONGDASH
const int *pArray = nullptr;
bool bIsBold = false;
switch(nLineStyle)
{
case LINESTYLE_BOLDDOTTED:
bIsBold = true;
[[fallthrough]];
case LINESTYLE_DOTTED:
pArray = aDottedArray;
break;
case LINESTYLE_BOLDDASH:
bIsBold = true;
[[fallthrough]];
case LINESTYLE_DASH:
pArray = aDashedArray;
break;
case LINESTYLE_BOLDLONGDASH:
bIsBold = true;
[[fallthrough]];
case LINESTYLE_LONGDASH:
pArray = aLongDashArray;
break;
case LINESTYLE_BOLDDASHDOT:
bIsBold = true;
[[fallthrough]];
case LINESTYLE_DASHDOT:
pArray = aDotDashArray;
break;
case LINESTYLE_BOLDDASHDOTDOT:
bIsBold = true;
[[fallthrough]];
case LINESTYLE_DASHDOTDOT:
pArray = aDashDotDotArray;
break;
}
if (!pArray)
return false;
if (bIsBold)
{
if (bIsOverline)
nY -= nLineHeight;
nLineHeight *= 2;
}
const double nEnd = nX + nLineWidth;
sal_Int32 nIndex = 0;
bool bAppend = true;
double nX1 = nX;
while(nX1 < nEnd)
{
if (pArray[nIndex] == 0)
nIndex = 0;
const double nX2 = std::min(nEnd, nX1 + pArray[nIndex] * nLineHeight);
if (bAppend)
appendRect(o_rPoly, nX1, nY, nX2, nY + nLineHeight);
nX1 = nX2;
++nIndex;
bAppend = !bAppend;
}
return true;
}
// create line actions for text such as underline and
// strikeout
void createOverlinePolyPolygon(::basegfx::B2DPolyPolygon& rTextLinesPolyPoly,
const ::basegfx::B2DPoint& rStartPos,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo)
{
switch( rTextLineInfo.mnOverlineStyle )
{
case LINESTYLE_NONE: // nothing to do
case LINESTYLE_DONTKNOW:
break;
case LINESTYLE_DOUBLEWAVE:
case LINESTYLE_SMALLWAVE:
case LINESTYLE_BOLDWAVE:
case LINESTYLE_WAVE:
appendWaveline(
rTextLinesPolyPoly,
rStartPos,
rTextLineInfo.mnOverlineOffset,
rLineWidth,
rTextLineInfo.mnOverlineHeight,
rTextLineInfo.mnOverlineStyle);
break;
case LINESTYLE_SINGLE:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnOverlineOffset,
rLineWidth,
rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight );
break;
case LINESTYLE_BOLD:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnOverlineOffset - rTextLineInfo.mnOverlineHeight,
rLineWidth,
rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight );
break;
case LINESTYLE_DOUBLE:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnOverlineOffset - rTextLineInfo.mnOverlineHeight * 2.0 ,
rLineWidth,
rTextLineInfo.mnOverlineOffset - rTextLineInfo.mnOverlineHeight );
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight,
rLineWidth,
rTextLineInfo.mnOverlineOffset + rTextLineInfo.mnOverlineHeight * 2.0 );
break;
default:
if (!appendDashes(
rTextLinesPolyPoly,
rStartPos.getX(),
rStartPos.getY() + rTextLineInfo.mnOverlineOffset,
rLineWidth,
rTextLineInfo.mnOverlineHeight,
rTextLineInfo.mnOverlineStyle,
true))
{
ENSURE_OR_THROW( false,
"::cppcanvas::internal::createTextLinesPolyPolygon(): Unexpected overline case" );
}
}
}
void createUnderlinePolyPolygon(::basegfx::B2DPolyPolygon& rTextLinesPolyPoly,
const ::basegfx::B2DPoint& rStartPos,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo )
{
switch( rTextLineInfo.mnUnderlineStyle )
{
case LINESTYLE_NONE: // nothing to do
case LINESTYLE_DONTKNOW:
break;
case LINESTYLE_DOUBLEWAVE:
case LINESTYLE_SMALLWAVE:
case LINESTYLE_BOLDWAVE:
case LINESTYLE_WAVE:
appendWaveline(
rTextLinesPolyPoly,
rStartPos,
rTextLineInfo.mnUnderlineOffset,
rLineWidth,
rTextLineInfo.mnLineHeight,
rTextLineInfo.mnUnderlineStyle);
break;
case LINESTYLE_SINGLE:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnUnderlineOffset,
rLineWidth,
rTextLineInfo.mnUnderlineOffset + rTextLineInfo.mnLineHeight );
break;
case LINESTYLE_BOLD:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnUnderlineOffset,
rLineWidth,
rTextLineInfo.mnUnderlineOffset + 2*rTextLineInfo.mnLineHeight );
break;
case LINESTYLE_DOUBLE:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnUnderlineOffset - rTextLineInfo.mnLineHeight,
rLineWidth,
rTextLineInfo.mnUnderlineOffset );
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnUnderlineOffset + 2*rTextLineInfo.mnLineHeight,
rLineWidth,
rTextLineInfo.mnUnderlineOffset + 3*rTextLineInfo.mnLineHeight );
break;
default:
if (!appendDashes(
rTextLinesPolyPoly,
rStartPos.getX(),
rStartPos.getY() + rTextLineInfo.mnUnderlineOffset,
rLineWidth,
rTextLineInfo.mnLineHeight,
rTextLineInfo.mnUnderlineStyle,
false))
{
ENSURE_OR_THROW( false,
"::cppcanvas::internal::createTextLinesPolyPolygon(): Unexpected underline case" );
}
}
}
void createStrikeoutPolyPolygon(::basegfx::B2DPolyPolygon& rTextLinesPolyPoly,
const ::basegfx::B2DPoint& rStartPos,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo)
{
switch( rTextLineInfo.mnStrikeoutStyle )
{
case STRIKEOUT_NONE: // nothing to do
case STRIKEOUT_DONTKNOW:
break;
case STRIKEOUT_SLASH: // TODO(Q1): we should handle this in the text layer
case STRIKEOUT_X:
break;
case STRIKEOUT_SINGLE:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnStrikeoutOffset,
rLineWidth,
rTextLineInfo.mnStrikeoutOffset + rTextLineInfo.mnLineHeight );
break;
case STRIKEOUT_BOLD:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnStrikeoutOffset,
rLineWidth,
rTextLineInfo.mnStrikeoutOffset + 2*rTextLineInfo.mnLineHeight );
break;
case STRIKEOUT_DOUBLE:
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnStrikeoutOffset - rTextLineInfo.mnLineHeight,
rLineWidth,
rTextLineInfo.mnStrikeoutOffset );
appendRect(
rTextLinesPolyPoly,
rStartPos,
0,
rTextLineInfo.mnStrikeoutOffset + 2*rTextLineInfo.mnLineHeight,
rLineWidth,
rTextLineInfo.mnStrikeoutOffset + 3*rTextLineInfo.mnLineHeight );
break;
default:
ENSURE_OR_THROW( false,
"::cppcanvas::internal::createTextLinesPolyPolygon(): Unexpected strikeout case" );
}
}
}
::basegfx::B2DPolyPolygon createTextLinesPolyPolygon( const ::basegfx::B2DPoint& rStartPos,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo )
{
// fill the polypolygon with all text lines
::basegfx::B2DPolyPolygon aTextLinesPolyPoly;
createOverlinePolyPolygon(aTextLinesPolyPoly, rStartPos, rLineWidth, rTextLineInfo);
createUnderlinePolyPolygon(aTextLinesPolyPoly, rStartPos, rLineWidth, rTextLineInfo);
createStrikeoutPolyPolygon(aTextLinesPolyPoly, rStartPos, rLineWidth, rTextLineInfo);
return aTextLinesPolyPoly;
}
::basegfx::B2DRange calcDevicePixelBounds( const ::basegfx::B2DRange& rBounds,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
::basegfx::B2DHomMatrix aTransform;
::canvas::tools::mergeViewAndRenderTransform( aTransform,
viewState,
renderState );
::basegfx::B2DRange aTransformedBounds;
return ::canvas::tools::calcTransformedRectBounds( aTransformedBounds,
rBounds,
aTransform );
}
// create line actions for text such as underline and
// strikeout
::basegfx::B2DPolyPolygon createTextLinesPolyPolygon( const double& rStartOffset,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo )
{
return createTextLinesPolyPolygon(
::basegfx::B2DPoint( rStartOffset,
0.0 ),
rLineWidth,
rTextLineInfo );
}
void createTextLinesPolyPolygon( const double& rStartOffset,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo,
::basegfx::B2DPolyPolygon& rOverlinePolyPoly,
::basegfx::B2DPolyPolygon& rUnderlinePolyPoly,
::basegfx::B2DPolyPolygon& rStrikeoutPolyPoly )
{
::basegfx::B2DPoint aStartPos(rStartOffset, 0.0);
createOverlinePolyPolygon(rOverlinePolyPoly, aStartPos, rLineWidth, rTextLineInfo);
createUnderlinePolyPolygon(rUnderlinePolyPoly, aStartPos, rLineWidth, rTextLineInfo);
createStrikeoutPolyPolygon(rStrikeoutPolyPoly, aStartPos, rLineWidth, rTextLineInfo);
}
}
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