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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 <vector>
#include <queue>
#include <set>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/Xrender.h>
#include <X11/Xproto.h>
#include "tools/debug.hxx"
#include "basegfx/polygon/b2dpolygon.hxx"
#include "basegfx/polygon/b2dpolypolygon.hxx"
#include "basegfx/polygon/b2dpolypolygontools.hxx"
#include "basegfx/polygon/b2dpolygontools.hxx"
#include "basegfx/polygon/b2dpolygonclipper.hxx"
#include "basegfx/polygon/b2dlinegeometry.hxx"
#include "basegfx/matrix/b2dhommatrix.hxx"
#include "basegfx/matrix/b2dhommatrixtools.hxx"
#include "basegfx/polygon/b2dpolypolygoncutter.hxx"
#include "basegfx/polygon/b2dtrapezoid.hxx"
#include <basegfx/curve/b2dcubicbezier.hxx>
#include <vcl/jobdata.hxx>
#include <vcl/sysdata.hxx>
#include <vcl/virdev.hxx>
#include "unx/salunx.h"
#include "unx/saldisp.hxx"
#include "unx/salgdi.h"
#include "unx/salvd.h"
#include "unx/x11/x11gdiimpl.h"
#include <unx/x11/xlimits.hxx>
#include "salgdiimpl.hxx"
#include "unx/nativewindowhandleprovider.hxx"
#include "textrender.hxx"
#include "gdiimpl.hxx"
#include "opengl/x11/gdiimpl.hxx"
#include "x11cairotextrender.hxx"
#include "openglx11cairotextrender.hxx"
#include "unx/printergfx.hxx"
#include "xrender_peer.hxx"
#include "cairo_xlib_cairo.hxx"
#include <cairo-xlib.h>
#include <vcl/opengl/OpenGLHelper.hxx>
X11SalGraphics::X11SalGraphics():
m_pFrame(nullptr),
m_pVDev(nullptr),
m_pColormap(nullptr),
m_pDeleteColormap(nullptr),
hDrawable_(None),
m_nXScreen( 0 ),
m_pXRenderFormat(nullptr),
m_aXRenderPicture(0),
mpClipRegion(nullptr),
#if ENABLE_CAIRO_CANVAS
maClipRegion(),
mnPenColor(SALCOLOR_NONE),
mnFillColor(SALCOLOR_NONE),
#endif // ENABLE_CAIRO_CANVAS
pFontGC_(nullptr),
nTextPixel_(0),
hBrush_(None),
bWindow_(false),
bPrinter_(false),
bVirDev_(false),
bFontGC_(false),
m_bOpenGL(OpenGLHelper::isVCLOpenGLEnabled())
{
if (m_bOpenGL)
{
mxImpl.reset(new X11OpenGLSalGraphicsImpl(*this));
mxTextRenderImpl.reset((new OpenGLX11CairoTextRender(*this)));
}
else
{
mxTextRenderImpl.reset((new X11CairoTextRender(*this)));
mxImpl.reset(new X11SalGraphicsImpl(*this));
}
}
X11SalGraphics::~X11SalGraphics()
{
DeInit();
ReleaseFonts();
freeResources();
}
void X11SalGraphics::freeResources()
{
Display *pDisplay = GetXDisplay();
if( mpClipRegion )
{
XDestroyRegion( mpClipRegion );
mpClipRegion = None;
}
mxImpl->freeResources();
if( hBrush_ )
{
XFreePixmap( pDisplay, hBrush_ );
hBrush_ = None;
}
if( pFontGC_ )
{
XFreeGC( pDisplay, pFontGC_ );
pFontGC_ = None;
}
if( m_pDeleteColormap )
{
delete m_pDeleteColormap;
m_pColormap = m_pDeleteColormap = nullptr;
}
if( m_aXRenderPicture )
{
XRenderPeer::GetInstance().FreePicture( m_aXRenderPicture );
m_aXRenderPicture = 0;
}
bFontGC_ = false;
}
SalGraphicsImpl* X11SalGraphics::GetImpl() const
{
return mxImpl.get();
}
void X11SalGraphics::SetDrawable( Drawable aDrawable, SalX11Screen nXScreen )
{
// shortcut if nothing changed
if( hDrawable_ == aDrawable )
return;
// free screen specific resources if needed
if( nXScreen != m_nXScreen )
{
freeResources();
m_pColormap = &vcl_sal::getSalDisplay(GetGenericData())->GetColormap( nXScreen );
m_nXScreen = nXScreen;
}
hDrawable_ = aDrawable;
SetXRenderFormat( nullptr );
if( m_aXRenderPicture )
{
XRenderPeer::GetInstance().FreePicture( m_aXRenderPicture );
m_aXRenderPicture = 0;
}
// TODO: moggi: FIXME nTextPixel_ = GetPixel( nTextColor_ );
}
void X11SalGraphics::Init( SalFrame *pFrame, Drawable aTarget,
SalX11Screen nXScreen )
{
m_pColormap = &vcl_sal::getSalDisplay(GetGenericData())->GetColormap(nXScreen);
m_nXScreen = nXScreen;
m_pFrame = pFrame;
m_pVDev = nullptr;
bWindow_ = true;
bVirDev_ = false;
SetDrawable( aTarget, nXScreen );
mxImpl->Init();
}
void X11SalGraphics::DeInit()
{
mxImpl->DeInit();
SetDrawable( None, m_nXScreen );
}
void X11SalGraphics::SetClipRegion( GC pGC, Region pXReg ) const
{
Display *pDisplay = GetXDisplay();
int n = 0;
Region Regions[3];
if( mpClipRegion )
Regions[n++] = mpClipRegion;
if( pXReg && !XEmptyRegion( pXReg ) )
Regions[n++] = pXReg;
if( 0 == n )
XSetClipMask( pDisplay, pGC, None );
else if( 1 == n )
XSetRegion( pDisplay, pGC, Regions[0] );
else
{
Region pTmpRegion = XCreateRegion();
XIntersectRegion( Regions[0], Regions[1], pTmpRegion );
XSetRegion( pDisplay, pGC, pTmpRegion );
XDestroyRegion( pTmpRegion );
}
}
// Calculate a dither-pixmap and make a brush of it
#define P_DELTA 51
#define DMAP( v, m ) ((v % P_DELTA) > m ? (v / P_DELTA) + 1 : (v / P_DELTA))
bool X11SalGraphics::GetDitherPixmap( SalColor nSalColor )
{
static const short nOrdDither8Bit[ 8 ][ 8 ] =
{
{ 0, 38, 9, 48, 2, 40, 12, 50},
{25, 12, 35, 22, 28, 15, 37, 24},
{ 6, 44, 3, 41, 8, 47, 5, 44},
{32, 19, 28, 16, 34, 21, 31, 18},
{ 1, 40, 11, 49, 0, 39, 10, 48},
{27, 14, 36, 24, 26, 13, 36, 23},
{ 8, 46, 4, 43, 7, 45, 4, 42},
{33, 20, 30, 17, 32, 20, 29, 16}
};
// test for correct depth (8bit)
if( GetColormap().GetVisual().GetDepth() != 8 )
return false;
char pBits[64];
char *pBitsPtr = pBits;
// Set the palette-entries for the dithering tile
sal_uInt8 nSalColorRed = SALCOLOR_RED ( nSalColor );
sal_uInt8 nSalColorGreen = SALCOLOR_GREEN ( nSalColor );
sal_uInt8 nSalColorBlue = SALCOLOR_BLUE ( nSalColor );
for(auto & nY : nOrdDither8Bit)
{
for( int nX = 0; nX < 8; nX++ )
{
short nMagic = nY[nX];
sal_uInt8 nR = P_DELTA * DMAP( nSalColorRed, nMagic );
sal_uInt8 nG = P_DELTA * DMAP( nSalColorGreen, nMagic );
sal_uInt8 nB = P_DELTA * DMAP( nSalColorBlue, nMagic );
*pBitsPtr++ = GetColormap().GetPixel( MAKE_SALCOLOR( nR, nG, nB ) );
}
}
// create the tile as ximage and an according pixmap -> caching
XImage *pImage = XCreateImage( GetXDisplay(),
GetColormap().GetXVisual(),
8,
ZPixmap,
0, // offset
pBits, // data
8, 8, // width & height
8, // bitmap_pad
0 ); // (default) bytes_per_line
if( !hBrush_ )
hBrush_ = limitXCreatePixmap( GetXDisplay(), GetDrawable(), 8, 8, 8 );
// put the ximage to the pixmap
XPutImage( GetXDisplay(),
hBrush_,
GetDisplay()->GetCopyGC( m_nXScreen ),
pImage,
0, 0, // Source
0, 0, // Destination
8, 8 ); // width & height
// destroy image-frame but not palette-data
pImage->data = nullptr;
XDestroyImage( pImage );
return true;
}
void X11SalGraphics::GetResolution( sal_Int32 &rDPIX, sal_Int32 &rDPIY ) // const
{
char* pForceDpi;
if ((pForceDpi = getenv("SAL_FORCEDPI")))
{
OString sForceDPI(pForceDpi);
rDPIX = rDPIY = sForceDPI.toInt32();
return;
}
const SalDisplay *pDisplay = GetDisplay();
if (!pDisplay)
{
SAL_WARN( "vcl", "Null display");
rDPIX = rDPIY = 96;
return;
}
Pair dpi = pDisplay->GetResolution();
rDPIX = dpi.A();
rDPIY = dpi.B();
if ( rDPIY > 200 )
{
rDPIX = Divide( rDPIX * 200, rDPIY );
rDPIY = 200;
}
// #i12705# equalize x- and y-resolution if they are close enough
if( rDPIX != rDPIY )
{
// different x- and y- resolutions are usually artifacts of
// a wrongly calculated screen size.
#ifdef DEBUG
printf("Forcing Resolution from %" SAL_PRIdINT32 "x%" SAL_PRIdINT32 " to %" SAL_PRIdINT32 "x%" SAL_PRIdINT32 "\n",
rDPIX,rDPIY,rDPIY,rDPIY);
#endif
rDPIX = rDPIY; // y-resolution is more trustworthy
}
}
sal_uInt16 X11SalGraphics::GetBitCount() const
{
return mxImpl->GetBitCount();
}
long X11SalGraphics::GetGraphicsWidth() const
{
return mxImpl->GetGraphicsWidth();
}
void X11SalGraphics::ResetClipRegion()
{
mxImpl->ResetClipRegion();
}
bool X11SalGraphics::setClipRegion( const vcl::Region& i_rClip )
{
#if ENABLE_CAIRO_CANVAS
maClipRegion = i_rClip;
#endif
return mxImpl->setClipRegion( i_rClip );
}
void X11SalGraphics::SetLineColor()
{
#if ENABLE_CAIRO_CANVAS
mnPenColor = SALCOLOR_NONE;
#endif // ENABLE_CAIRO_CANVAS
mxImpl->SetLineColor();
}
void X11SalGraphics::SetLineColor( SalColor nSalColor )
{
#if ENABLE_CAIRO_CANVAS
mnPenColor = nSalColor;
#endif // ENABLE_CAIRO_CANVAS
mxImpl->SetLineColor( nSalColor );
}
void X11SalGraphics::SetFillColor()
{
#if ENABLE_CAIRO_CANVAS
mnFillColor = SALCOLOR_NONE;
#endif // ENABLE_CAIRO_CANVAS
mxImpl->SetFillColor();
}
void X11SalGraphics::SetFillColor( SalColor nSalColor )
{
#if ENABLE_CAIRO_CANVAS
mnFillColor = nSalColor;
#endif // ENABLE_CAIRO_CANVAS
mxImpl->SetFillColor( nSalColor );
}
void X11SalGraphics::SetROPLineColor( SalROPColor nROPColor )
{
mxImpl->SetROPLineColor( nROPColor );
}
void X11SalGraphics::SetROPFillColor( SalROPColor nROPColor )
{
mxImpl->SetROPFillColor( nROPColor );
}
void X11SalGraphics::SetXORMode( bool bSet )
{
mxImpl->SetXORMode( bSet );
}
void X11SalGraphics::drawPixel( long nX, long nY )
{
mxImpl->drawPixel( nX, nY );
}
void X11SalGraphics::drawPixel( long nX, long nY, SalColor nSalColor )
{
mxImpl->drawPixel( nX, nY, nSalColor );
}
void X11SalGraphics::drawLine( long nX1, long nY1, long nX2, long nY2 )
{
mxImpl->drawLine( nX1, nY1, nX2, nY2 );
}
void X11SalGraphics::drawRect( long nX, long nY, long nDX, long nDY )
{
mxImpl->drawRect( nX, nY, nDX, nDY );
}
void X11SalGraphics::drawPolyLine( sal_uInt32 nPoints, const SalPoint *pPtAry )
{
mxImpl->drawPolyLine( nPoints, pPtAry );
}
void X11SalGraphics::drawPolygon( sal_uInt32 nPoints, const SalPoint* pPtAry )
{
mxImpl->drawPolygon( nPoints, pPtAry );
}
void X11SalGraphics::drawPolyPolygon( sal_uInt32 nPoly,
const sal_uInt32 *pPoints,
PCONSTSALPOINT *pPtAry )
{
mxImpl->drawPolyPolygon( nPoly, pPoints, pPtAry );
}
bool X11SalGraphics::drawPolyLineBezier( sal_uInt32 nPoints, const SalPoint* pPtAry, const PolyFlags* pFlgAry )
{
return mxImpl->drawPolyLineBezier( nPoints, pPtAry, pFlgAry );
}
bool X11SalGraphics::drawPolygonBezier( sal_uInt32 nPoints, const SalPoint* pPtAry, const PolyFlags* pFlgAry )
{
return mxImpl->drawPolygonBezier( nPoints, pPtAry, pFlgAry );
}
bool X11SalGraphics::drawPolyPolygonBezier( sal_uInt32 nPoints, const sal_uInt32* pPoints,
const SalPoint* const* pPtAry, const PolyFlags* const* pFlgAry)
{
return mxImpl->drawPolyPolygonBezier( nPoints, pPoints, pPtAry, pFlgAry );
}
void X11SalGraphics::invert( sal_uInt32 nPoints,
const SalPoint* pPtAry,
SalInvert nFlags )
{
mxImpl->invert( nPoints, pPtAry, nFlags );
}
bool X11SalGraphics::drawEPS( long nX, long nY, long nWidth,
long nHeight, void* pPtr, sal_uLong nSize )
{
return mxImpl->drawEPS( nX, nY, nWidth, nHeight, pPtr, nSize );
}
XRenderPictFormat* X11SalGraphics::GetXRenderFormat() const
{
if( m_pXRenderFormat == nullptr )
m_pXRenderFormat = XRenderPeer::GetInstance().FindVisualFormat( GetVisual().visual );
return m_pXRenderFormat;
}
SystemGraphicsData X11SalGraphics::GetGraphicsData() const
{
SystemGraphicsData aRes;
aRes.nSize = sizeof(aRes);
aRes.pDisplay = GetXDisplay();
aRes.hDrawable = hDrawable_;
aRes.pVisual = GetVisual().visual;
aRes.nScreen = m_nXScreen.getXScreen();
aRes.nDepth = GetBitCount();
aRes.aColormap = GetColormap().GetXColormap();
aRes.pXRenderFormat = m_pXRenderFormat;
return aRes;
}
#if ENABLE_CAIRO_CANVAS
bool X11SalGraphics::SupportsCairo() const
{
Display *pDisplay = GetXDisplay();
int nDummy;
return XQueryExtension(pDisplay, "RENDER", &nDummy, &nDummy, &nDummy);
}
cairo::SurfaceSharedPtr X11SalGraphics::CreateSurface(const cairo::CairoSurfaceSharedPtr& rSurface) const
{
return cairo::SurfaceSharedPtr(new cairo::X11Surface(rSurface));
}
namespace
{
cairo::X11SysData getSysData( const vcl::Window& rWindow )
{
const SystemEnvData* pSysData = rWindow.GetSystemData();
if( !pSysData )
return cairo::X11SysData();
else
return cairo::X11SysData(*pSysData);
}
cairo::X11SysData getSysData( const VirtualDevice& rVirDev )
{
return cairo::X11SysData( rVirDev.GetSystemGfxData() );
}
}
cairo::SurfaceSharedPtr X11SalGraphics::CreateSurface( const OutputDevice& rRefDevice,
int x, int y, int width, int height ) const
{
if( rRefDevice.GetOutDevType() == OUTDEV_WINDOW )
return cairo::SurfaceSharedPtr(new cairo::X11Surface(getSysData(static_cast<const vcl::Window&>(rRefDevice)),
x,y,width,height));
if( rRefDevice.GetOutDevType() == OUTDEV_VIRDEV )
return cairo::SurfaceSharedPtr(new cairo::X11Surface(getSysData(static_cast<const VirtualDevice&>(rRefDevice)),
x,y,width,height));
return cairo::SurfaceSharedPtr();
}
cairo::SurfaceSharedPtr X11SalGraphics::CreateBitmapSurface( const OutputDevice& rRefDevice,
const BitmapSystemData& rData,
const Size& rSize ) const
{
SAL_INFO("vcl", "requested size: " << rSize.Width() << " x " << rSize.Height()
<< " available size: " << rData.mnWidth << " x "
<< rData.mnHeight);
if ( rData.mnWidth == rSize.Width() && rData.mnHeight == rSize.Height() )
{
if( rRefDevice.GetOutDevType() == OUTDEV_WINDOW )
return cairo::SurfaceSharedPtr(new cairo::X11Surface(getSysData(static_cast<const vcl::Window&>(rRefDevice)), rData ));
else if( rRefDevice.GetOutDevType() == OUTDEV_VIRDEV )
return cairo::SurfaceSharedPtr(new cairo::X11Surface(getSysData(static_cast<const VirtualDevice&>(rRefDevice)), rData ));
}
return cairo::SurfaceSharedPtr();
}
css::uno::Any X11SalGraphics::GetNativeSurfaceHandle(cairo::SurfaceSharedPtr& rSurface, const basegfx::B2ISize& /*rSize*/) const
{
cairo::X11Surface& rXlibSurface=dynamic_cast<cairo::X11Surface&>(*rSurface.get());
css::uno::Sequence< css::uno::Any > args( 3 );
args[0] = css::uno::Any( false ); // do not call XFreePixmap on it
args[1] = css::uno::Any( rXlibSurface.getPixmap()->mhDrawable );
args[2] = css::uno::Any( sal_Int32( rXlibSurface.getDepth() ) );
return css::uno::Any(args);
}
#endif // ENABLE_CAIRO_CANVAS
// draw a poly-polygon
bool X11SalGraphics::drawPolyPolygon( const basegfx::B2DPolyPolygon& rOrigPolyPoly, double fTransparency )
{
if(fTransparency >= 1.0)
{
return true;
}
const sal_uInt32 nPolyCount(rOrigPolyPoly.count());
if(nPolyCount <= 0)
{
return true;
}
#if ENABLE_CAIRO_CANVAS
if(SALCOLOR_NONE == mnFillColor && SALCOLOR_NONE == mnPenColor)
{
return true;
}
static bool bUseCairoForPolygons = false;
if (!m_bOpenGL && bUseCairoForPolygons && SupportsCairo())
{
// snap to raster if requested
basegfx::B2DPolyPolygon aPolyPoly(rOrigPolyPoly);
const bool bSnapPoints(!getAntiAliasB2DDraw());
if(bSnapPoints)
{
aPolyPoly = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aPolyPoly);
}
cairo_t* cr = getCairoContext();
clipRegion(cr);
for(sal_uInt32 a(0); a < nPolyCount; ++a)
{
const basegfx::B2DPolygon aPolygon(aPolyPoly.getB2DPolygon(a));
const sal_uInt32 nPointCount(aPolygon.count());
if(nPointCount)
{
const sal_uInt32 nEdgeCount(aPolygon.isClosed() ? nPointCount : nPointCount - 1);
if(nEdgeCount)
{
basegfx::B2DCubicBezier aEdge;
for(sal_uInt32 b = 0; b < nEdgeCount; ++b)
{
aPolygon.getBezierSegment(b, aEdge);
if(!b)
{
const basegfx::B2DPoint aStart(aEdge.getStartPoint());
cairo_move_to(cr, aStart.getX(), aStart.getY());
}
const basegfx::B2DPoint aEnd(aEdge.getEndPoint());
if(aEdge.isBezier())
{
const basegfx::B2DPoint aCP1(aEdge.getControlPointA());
const basegfx::B2DPoint aCP2(aEdge.getControlPointB());
cairo_curve_to(cr,
aCP1.getX(), aCP1.getY(),
aCP2.getX(), aCP2.getY(),
aEnd.getX(), aEnd.getY());
}
else
{
cairo_line_to(cr, aEnd.getX(), aEnd.getY());
}
}
cairo_close_path(cr);
}
}
}
if(SALCOLOR_NONE != mnFillColor)
{
cairo_set_source_rgba(cr,
SALCOLOR_RED(mnFillColor)/255.0,
SALCOLOR_GREEN(mnFillColor)/255.0,
SALCOLOR_BLUE(mnFillColor)/255.0,
1.0 - fTransparency);
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_fill_preserve(cr);
}
if(SALCOLOR_NONE != mnPenColor)
{
cairo_set_source_rgba(cr,
SALCOLOR_RED(mnPenColor)/255.0,
SALCOLOR_GREEN(mnPenColor)/255.0,
SALCOLOR_BLUE(mnPenColor)/255.0,
1.0 - fTransparency);
cairo_stroke_preserve(cr);
}
releaseCairoContext(cr);
return true;
}
#endif // ENABLE_CAIRO_CANVAS
return mxImpl->drawPolyPolygon( rOrigPolyPoly, fTransparency );
}
#if ENABLE_CAIRO_CANVAS
void X11SalGraphics::clipRegion(cairo_t* cr)
{
if(!maClipRegion.IsEmpty())
{
RectangleVector aRectangles;
maClipRegion.GetRegionRectangles(aRectangles);
if (!aRectangles.empty())
{
for (RectangleVector::const_iterator aRectIter(aRectangles.begin()); aRectIter != aRectangles.end(); ++aRectIter)
{
cairo_rectangle(cr, aRectIter->Left(), aRectIter->Top(), aRectIter->GetWidth(), aRectIter->GetHeight());
}
cairo_clip(cr);
}
}
}
#endif // ENABLE_CAIRO_CANVAS
bool X11SalGraphics::drawPolyLine(
const basegfx::B2DPolygon& rPolygon,
double fTransparency,
const basegfx::B2DVector& rLineWidth,
basegfx::B2DLineJoin eLineJoin,
css::drawing::LineCap eLineCap,
double fMiterMinimumAngle)
{
const int nPointCount(rPolygon.count());
if(nPointCount <= 0)
{
return true;
}
if(fTransparency >= 1.0)
{
return true;
}
#if ENABLE_CAIRO_CANVAS
static bool bUseCairoForFatLines = true;
if (!m_bOpenGL && bUseCairoForFatLines && SupportsCairo())
{
cairo_t* cr = getCairoContext();
clipRegion(cr);
cairo_line_join_t eCairoLineJoin(CAIRO_LINE_JOIN_MITER);
bool bNoJoin(false);
switch(eLineJoin)
{
case basegfx::B2DLineJoin::Bevel:
eCairoLineJoin = CAIRO_LINE_JOIN_BEVEL;
break;
case basegfx::B2DLineJoin::Round:
eCairoLineJoin = CAIRO_LINE_JOIN_ROUND;
break;
case basegfx::B2DLineJoin::NONE:
bNoJoin = true;
SAL_FALLTHROUGH;
case basegfx::B2DLineJoin::Miter:
eCairoLineJoin = CAIRO_LINE_JOIN_MITER;
break;
}
// setup cap attribute
cairo_line_cap_t eCairoLineCap(CAIRO_LINE_CAP_BUTT);
switch(eLineCap)
{
default: // css::drawing::LineCap_BUTT:
{
eCairoLineCap = CAIRO_LINE_CAP_BUTT;
break;
}
case css::drawing::LineCap_ROUND:
{
eCairoLineCap = CAIRO_LINE_CAP_ROUND;
break;
}
case css::drawing::LineCap_SQUARE:
{
eCairoLineCap = CAIRO_LINE_CAP_SQUARE;
break;
}
}
cairo_set_source_rgba(cr,
SALCOLOR_RED(mnPenColor)/255.0,
SALCOLOR_GREEN(mnPenColor)/255.0,
SALCOLOR_BLUE(mnPenColor)/255.0,
1.0 - fTransparency);
cairo_set_line_join(cr, eCairoLineJoin);
cairo_set_line_cap(cr, eCairoLineCap);
cairo_set_line_width(cr, (fabs(rLineWidth.getX()) + fabs(rLineWidth.getY())) * 0.5);
if(CAIRO_LINE_JOIN_MITER == eCairoLineJoin)
{
cairo_set_miter_limit(cr, 15.0);
}
const sal_uInt32 nEdgeCount(rPolygon.isClosed() ? nPointCount : nPointCount - 1);
if(nEdgeCount)
{
const bool bSnapPoints(!getAntiAliasB2DDraw());
static basegfx::B2DHomMatrix aHalfPointTransform(basegfx::tools::createTranslateB2DHomMatrix(0.5, 0.5));
basegfx::B2DCubicBezier aEdge;
basegfx::B2DPoint aStart;
for(sal_uInt32 i = 0; i < nEdgeCount; ++i)
{
rPolygon.getBezierSegment(i, aEdge);
aEdge.transform(aHalfPointTransform);
if(bSnapPoints)
{
aEdge.fround();
}
if(!i || bNoJoin)
{
aStart = aEdge.getStartPoint();
cairo_move_to(cr, aStart.getX(), aStart.getY());
}
const basegfx::B2DPoint aEnd(aEdge.getEndPoint());
if(aEdge.isBezier())
{
basegfx::B2DPoint aCP1(aEdge.getControlPointA());
basegfx::B2DPoint aCP2(aEdge.getControlPointB());
// tdf#99165 cairo has problems in creating the evtl. needed
// miter graphics (and maybe others) when empty control points
// are used, so fallback to the mathematical 'default' control
// points in that case
// tdf#101026 The 1st attempt to create a mathematically correct replacement control
// vector was wrong. Best alternative is one as close as possible which means short.
if (aStart.equal(aCP1))
{
aCP1 = aStart + ((aCP2 - aStart) * 0.0005);
}
if(aEnd.equal(aCP2))
{
aCP2 = aEnd + ((aCP1 - aEnd) * 0.0005);
}
cairo_curve_to(cr,
aCP1.getX(), aCP1.getY(),
aCP2.getX(), aCP2.getY(),
aEnd.getX(), aEnd.getY());
}
else
{
cairo_line_to(cr, aEnd.getX(), aEnd.getY());
}
aStart = aEnd;
}
if(rPolygon.isClosed() && !bNoJoin)
{
cairo_close_path(cr);
}
cairo_stroke(cr);
}
releaseCairoContext(cr);
return true;
}
#endif // ENABLE_CAIRO_CANVAS
return mxImpl->drawPolyLine( rPolygon, fTransparency, rLineWidth,
eLineJoin, eLineCap, fMiterMinimumAngle );
}
bool X11SalGraphics::drawGradient(const tools::PolyPolygon& rPoly, const Gradient& rGradient)
{
return mxImpl->drawGradient(rPoly, rGradient);
}
SalGeometryProvider *X11SalGraphics::GetGeometryProvider() const
{
if (m_pFrame)
return static_cast< SalGeometryProvider * >(m_pFrame);
else
return static_cast< SalGeometryProvider * >(m_pVDev);
}
cairo_t* X11SalGraphics::getCairoContext()
{
cairo_surface_t* surface = cairo_xlib_surface_create(GetXDisplay(), hDrawable_,
GetVisual().visual, SAL_MAX_INT16, SAL_MAX_INT16);
cairo_t *cr = cairo_create(surface);
cairo_surface_destroy(surface);
return cr;
}
void X11SalGraphics::releaseCairoContext(cairo_t* cr)
{
cairo_destroy(cr);
}
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