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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 <config_features.h>
#include <memory>
#include <numeric>
#include <headless/svpgdi.hxx>
#include <headless/svpbmp.hxx>
#include <headless/svpframe.hxx>
#include <headless/svpcairotextrender.hxx>
#include <headless/CustomWidgetDraw.hxx>
#include <saldatabasic.hxx>
#include <sal/log.hxx>
#include <tools/helpers.hxx>
#include <o3tl/safeint.hxx>
#include <vcl/BitmapTools.hxx>
#include <vcl/sysdata.hxx>
#include <vcl/gradient.hxx>
#include <config_cairo_canvas.h>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/range/b2drange.hxx>
#include <basegfx/range/b2ibox.hxx>
#include <basegfx/range/b2irange.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/utils/canvastools.hxx>
#include <basegfx/utils/systemdependentdata.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <comphelper/lok.hxx>
#include <unx/gendata.hxx>
#include <dlfcn.h>
#if ENABLE_CAIRO_CANVAS
# if defined CAIRO_VERSION && CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 10, 0)
# define CAIRO_OPERATOR_DIFFERENCE (static_cast<cairo_operator_t>(23))
# endif
#endif
namespace
{
basegfx::B2DRange getClipBox(cairo_t* cr)
{
double x1, y1, x2, y2;
cairo_clip_extents(cr, &x1, &y1, &x2, &y2);
// support B2DRange::isEmpty()
if(0.0 != x1 || 0.0 != y1 || 0.0 != x2 || 0.0 != y2)
{
return basegfx::B2DRange(x1, y1, x2, y2);
}
return basegfx::B2DRange();
}
basegfx::B2DRange getFillDamage(cairo_t* cr)
{
double x1, y1, x2, y2;
// this is faster than cairo_fill_extents, at the cost of some overdraw
cairo_path_extents(cr, &x1, &y1, &x2, &y2);
// support B2DRange::isEmpty()
if(0.0 != x1 || 0.0 != y1 || 0.0 != x2 || 0.0 != y2)
{
return basegfx::B2DRange(x1, y1, x2, y2);
}
return basegfx::B2DRange();
}
basegfx::B2DRange getClippedFillDamage(cairo_t* cr)
{
basegfx::B2DRange aDamageRect(getFillDamage(cr));
aDamageRect.intersect(getClipBox(cr));
return aDamageRect;
}
basegfx::B2DRange getStrokeDamage(cairo_t* cr)
{
double x1, y1, x2, y2;
// less accurate, but much faster
cairo_path_extents(cr, &x1, &y1, &x2, &y2);
// support B2DRange::isEmpty()
if(0.0 != x1 || 0.0 != y1 || 0.0 != x2 || 0.0 != y2)
{
return basegfx::B2DRange(x1, y1, x2, y2);
}
return basegfx::B2DRange();
}
basegfx::B2DRange getClippedStrokeDamage(cairo_t* cr)
{
basegfx::B2DRange aDamageRect(getStrokeDamage(cr));
aDamageRect.intersect(getClipBox(cr));
return aDamageRect;
}
}
bool SvpSalGraphics::blendBitmap( const SalTwoRect&, const SalBitmap& /*rBitmap*/ )
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::blendBitmap case");
return false;
}
bool SvpSalGraphics::blendAlphaBitmap( const SalTwoRect&, const SalBitmap&, const SalBitmap&, const SalBitmap& )
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::blendAlphaBitmap case");
return false;
}
namespace
{
cairo_format_t getCairoFormat(const BitmapBuffer& rBuffer)
{
cairo_format_t nFormat;
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
assert(rBuffer.mnBitCount == 32 || rBuffer.mnBitCount == 24 || rBuffer.mnBitCount == 1);
#else
assert(rBuffer.mnBitCount == 32 || rBuffer.mnBitCount == 1);
#endif
if (rBuffer.mnBitCount == 32)
nFormat = CAIRO_FORMAT_ARGB32;
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
else if (rBuffer.mnBitCount == 24)
nFormat = CAIRO_FORMAT_RGB24_888;
#endif
else
nFormat = CAIRO_FORMAT_A1;
return nFormat;
}
void Toggle1BitTransparency(const BitmapBuffer& rBuf)
{
assert(rBuf.maPalette.GetBestIndex(BitmapColor(COL_BLACK)) == 0);
// TODO: make upper layers use standard alpha
if (getCairoFormat(rBuf) == CAIRO_FORMAT_A1)
{
const int nImageSize = rBuf.mnHeight * rBuf.mnScanlineSize;
unsigned char* pDst = rBuf.mpBits;
for (int i = nImageSize; --i >= 0; ++pDst)
*pDst = ~*pDst;
}
}
std::unique_ptr<BitmapBuffer> FastConvert24BitRgbTo32BitCairo(const BitmapBuffer* pSrc)
{
if (pSrc == nullptr)
return nullptr;
assert(pSrc->mnFormat == SVP_24BIT_FORMAT);
const tools::Long nWidth = pSrc->mnWidth;
const tools::Long nHeight = pSrc->mnHeight;
std::unique_ptr<BitmapBuffer> pDst(new BitmapBuffer);
pDst->mnFormat = (ScanlineFormat::N32BitTcArgb | ScanlineFormat::TopDown);
pDst->mnWidth = nWidth;
pDst->mnHeight = nHeight;
pDst->mnBitCount = 32;
pDst->maColorMask = pSrc->maColorMask;
pDst->maPalette = pSrc->maPalette;
tools::Long nScanlineBase;
const bool bFail = o3tl::checked_multiply<tools::Long>(pDst->mnBitCount, nWidth, nScanlineBase);
if (bFail)
{
SAL_WARN("vcl.gdi", "checked multiply failed");
pDst->mpBits = nullptr;
return nullptr;
}
pDst->mnScanlineSize = AlignedWidth4Bytes(nScanlineBase);
if (pDst->mnScanlineSize < nScanlineBase/8)
{
SAL_WARN("vcl.gdi", "scanline calculation wraparound");
pDst->mpBits = nullptr;
return nullptr;
}
try
{
pDst->mpBits = new sal_uInt8[ pDst->mnScanlineSize * nHeight ];
}
catch (const std::bad_alloc&)
{
// memory exception, clean up
pDst->mpBits = nullptr;
return nullptr;
}
for (tools::Long y = 0; y < nHeight; ++y)
{
sal_uInt8* pS = pSrc->mpBits + y * pSrc->mnScanlineSize;
sal_uInt8* pD = pDst->mpBits + y * pDst->mnScanlineSize;
for (tools::Long x = 0; x < nWidth; ++x)
{
#if defined(ANDROID) && !HAVE_FEATURE_ANDROID_LOK
static_assert((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown) == ScanlineFormat::N32BitTcRgba, "Expected SVP_CAIRO_FORMAT set to N32BitTcBgra");
static_assert((SVP_24BIT_FORMAT & ~ScanlineFormat::TopDown) == ScanlineFormat::N24BitTcRgb, "Expected SVP_24BIT_FORMAT set to N24BitTcRgb");
pD[0] = pS[0];
pD[1] = pS[1];
pD[2] = pS[2];
pD[3] = 0xff; // Alpha
#elif defined OSL_BIGENDIAN
static_assert((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown) == ScanlineFormat::N32BitTcArgb, "Expected SVP_CAIRO_FORMAT set to N32BitTcBgra");
static_assert((SVP_24BIT_FORMAT & ~ScanlineFormat::TopDown) == ScanlineFormat::N24BitTcRgb, "Expected SVP_24BIT_FORMAT set to N24BitTcRgb");
pD[0] = 0xff; // Alpha
pD[1] = pS[0];
pD[2] = pS[1];
pD[3] = pS[2];
#else
static_assert((SVP_CAIRO_FORMAT & ~ScanlineFormat::TopDown) == ScanlineFormat::N32BitTcBgra, "Expected SVP_CAIRO_FORMAT set to N32BitTcBgra");
static_assert((SVP_24BIT_FORMAT & ~ScanlineFormat::TopDown) == ScanlineFormat::N24BitTcBgr, "Expected SVP_24BIT_FORMAT set to N24BitTcBgr");
pD[0] = pS[0];
pD[1] = pS[1];
pD[2] = pS[2];
pD[3] = 0xff; // Alpha
#endif
pS += 3;
pD += 4;
}
}
return pDst;
}
// check for env var that decides for using downscale pattern
const char* pDisableDownScale(getenv("SAL_DISABLE_CAIRO_DOWNSCALE"));
bool bDisableDownScale(nullptr != pDisableDownScale);
class SurfaceHelper
{
private:
cairo_surface_t* pSurface;
std::unordered_map<unsigned long long, cairo_surface_t*> maDownscaled;
SurfaceHelper(const SurfaceHelper&) = delete;
SurfaceHelper& operator=(const SurfaceHelper&) = delete;
cairo_surface_t* implCreateOrReuseDownscale(
unsigned long nTargetWidth,
unsigned long nTargetHeight)
{
const unsigned long nSourceWidth(cairo_image_surface_get_width(pSurface));
const unsigned long nSourceHeight(cairo_image_surface_get_height(pSurface));
// zoomed in, need to stretch at paint, no pre-scale useful
if(nTargetWidth >= nSourceWidth || nTargetHeight >= nSourceHeight)
{
return pSurface;
}
// calculate downscale factor
unsigned long nWFactor(1);
unsigned long nW((nSourceWidth + 1) / 2);
unsigned long nHFactor(1);
unsigned long nH((nSourceHeight + 1) / 2);
while(nW > nTargetWidth && nW > 1)
{
nW = (nW + 1) / 2;
nWFactor *= 2;
}
while(nH > nTargetHeight && nH > 1)
{
nH = (nH + 1) / 2;
nHFactor *= 2;
}
if(1 == nWFactor && 1 == nHFactor)
{
// original size *is* best binary size, use it
return pSurface;
}
// go up one scale again - look for no change
nW = (1 == nWFactor) ? nTargetWidth : nW * 2;
nH = (1 == nHFactor) ? nTargetHeight : nH * 2;
// check if we have a downscaled version of required size
const unsigned long long key((nW * LONG_MAX) + nH);
auto isHit(maDownscaled.find(key));
if(isHit != maDownscaled.end())
{
return isHit->second;
}
// create new surface in the targeted size
cairo_surface_t* pSurfaceTarget = cairo_surface_create_similar(
pSurface,
cairo_surface_get_content(pSurface),
nW,
nH);
// made a version to scale self first that worked well, but would've
// been hard to support CAIRO_FORMAT_A1 including bit shifting, so
// I decided to go with cairo itself - use CAIRO_FILTER_FAST or
// CAIRO_FILTER_GOOD though. Please modify as needed for
// performance/quality
cairo_t* cr = cairo_create(pSurfaceTarget);
const double fScaleX(static_cast<double>(nW)/static_cast<double>(nSourceWidth));
const double fScaleY(static_cast<double>(nH)/static_cast<double>(nSourceHeight));
cairo_scale(cr, fScaleX, fScaleY);
cairo_set_source_surface(cr, pSurface, 0.0, 0.0);
cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_GOOD);
cairo_paint(cr);
cairo_destroy(cr);
// need to set device_scale for downscale surfaces to get
// them handled correctly
cairo_surface_set_device_scale(pSurfaceTarget, fScaleX, fScaleY);
// add entry to cached entries
maDownscaled[key] = pSurfaceTarget;
return pSurfaceTarget;
}
protected:
cairo_surface_t* implGetSurface() const { return pSurface; }
void implSetSurface(cairo_surface_t* pNew) { pSurface = pNew; }
bool isTrivial() const
{
constexpr unsigned long nMinimalSquareSizeToBuffer(64*64);
const unsigned long nSourceWidth(cairo_image_surface_get_width(pSurface));
const unsigned long nSourceHeight(cairo_image_surface_get_height(pSurface));
return nSourceWidth * nSourceHeight < nMinimalSquareSizeToBuffer;
}
public:
explicit SurfaceHelper()
: pSurface(nullptr),
maDownscaled()
{
}
~SurfaceHelper()
{
cairo_surface_destroy(pSurface);
for(auto& candidate : maDownscaled)
{
cairo_surface_destroy(candidate.second);
}
}
cairo_surface_t* getSurface(
unsigned long nTargetWidth = 0,
unsigned long nTargetHeight = 0) const
{
if (bDisableDownScale || 0 == nTargetWidth || 0 == nTargetHeight || !pSurface || isTrivial())
{
// caller asks for original or disabled or trivial (smaller then a minimal square size)
// also excludes zero cases for width/height after this point if need to prescale
return pSurface;
}
return const_cast<SurfaceHelper*>(this)->implCreateOrReuseDownscale(
nTargetWidth,
nTargetHeight);
}
};
class BitmapHelper : public SurfaceHelper
{
private:
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
const bool m_bForceARGB32;
#endif
SvpSalBitmap aTmpBmp;
public:
explicit BitmapHelper(
const SalBitmap& rSourceBitmap,
const bool bForceARGB32 = false)
: SurfaceHelper(),
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
m_bForceARGB32(bForceARGB32),
#endif
aTmpBmp()
{
const SvpSalBitmap& rSrcBmp = static_cast<const SvpSalBitmap&>(rSourceBitmap);
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
if ((rSrcBmp.GetBitCount() != 32 && rSrcBmp.GetBitCount() != 24) || bForceARGB32)
#else
(void)bForceARGB32;
if (rSrcBmp.GetBitCount() != 32)
#endif
{
//big stupid copy here
const BitmapBuffer* pSrc = rSrcBmp.GetBuffer();
const SalTwoRect aTwoRect = { 0, 0, pSrc->mnWidth, pSrc->mnHeight,
0, 0, pSrc->mnWidth, pSrc->mnHeight };
std::unique_ptr<BitmapBuffer> pTmp = (pSrc->mnFormat == SVP_24BIT_FORMAT
? FastConvert24BitRgbTo32BitCairo(pSrc)
: StretchAndConvert(*pSrc, aTwoRect, SVP_CAIRO_FORMAT));
aTmpBmp.Create(std::move(pTmp));
assert(aTmpBmp.GetBitCount() == 32);
implSetSurface(SvpSalGraphics::createCairoSurface(aTmpBmp.GetBuffer()));
}
else
{
implSetSurface(SvpSalGraphics::createCairoSurface(rSrcBmp.GetBuffer()));
}
}
void mark_dirty()
{
cairo_surface_mark_dirty(implGetSurface());
}
unsigned char* getBits(sal_Int32 &rStride)
{
cairo_surface_flush(implGetSurface());
unsigned char *mask_data = cairo_image_surface_get_data(implGetSurface());
const cairo_format_t nFormat = cairo_image_surface_get_format(implGetSurface());
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
if (!m_bForceARGB32)
assert(nFormat == CAIRO_FORMAT_RGB24_888 && "Expected RGB24_888 image");
else
#endif
{
assert(nFormat == CAIRO_FORMAT_ARGB32 && "need to implement CAIRO_FORMAT_A1 after all here");
}
rStride = cairo_format_stride_for_width(nFormat, cairo_image_surface_get_width(implGetSurface()));
return mask_data;
}
};
sal_Int64 estimateUsageInBytesForSurfaceHelper(const SurfaceHelper* pHelper)
{
sal_Int64 nRetval(0);
if(nullptr != pHelper)
{
cairo_surface_t* pSurface(pHelper->getSurface());
if(pSurface)
{
const tools::Long nStride(cairo_image_surface_get_stride(pSurface));
const tools::Long nHeight(cairo_image_surface_get_height(pSurface));
nRetval = nStride * nHeight;
// if we do downscale, size will grow by 1/4 + 1/16 + 1/32 + ...,
// rough estimation just multiplies by 1.25, should be good enough
// for estimation of buffer survival time
if(!bDisableDownScale)
{
nRetval = (nRetval * 5) / 4;
}
}
}
return nRetval;
}
class SystemDependentData_BitmapHelper : public basegfx::SystemDependentData
{
private:
std::shared_ptr<BitmapHelper> maBitmapHelper;
public:
SystemDependentData_BitmapHelper(
basegfx::SystemDependentDataManager& rSystemDependentDataManager,
const std::shared_ptr<BitmapHelper>& rBitmapHelper)
: basegfx::SystemDependentData(rSystemDependentDataManager),
maBitmapHelper(rBitmapHelper)
{
}
const std::shared_ptr<BitmapHelper>& getBitmapHelper() const { return maBitmapHelper; };
virtual sal_Int64 estimateUsageInBytes() const override;
};
sal_Int64 SystemDependentData_BitmapHelper::estimateUsageInBytes() const
{
return estimateUsageInBytesForSurfaceHelper(maBitmapHelper.get());
}
class MaskHelper : public SurfaceHelper
{
private:
std::unique_ptr<unsigned char[]> pAlphaBits;
public:
explicit MaskHelper(const SalBitmap& rAlphaBitmap)
: SurfaceHelper(),
pAlphaBits()
{
const SvpSalBitmap& rMask = static_cast<const SvpSalBitmap&>(rAlphaBitmap);
const BitmapBuffer* pMaskBuf = rMask.GetBuffer();
if (rAlphaBitmap.GetBitCount() == 8)
{
// the alpha values need to be inverted for Cairo
// so big stupid copy and invert here
const int nImageSize = pMaskBuf->mnHeight * pMaskBuf->mnScanlineSize;
pAlphaBits.reset( new unsigned char[nImageSize] );
memcpy(pAlphaBits.get(), pMaskBuf->mpBits, nImageSize);
// TODO: make upper layers use standard alpha
sal_uInt32* pLDst = reinterpret_cast<sal_uInt32*>(pAlphaBits.get());
for( int i = nImageSize/sizeof(sal_uInt32); --i >= 0; ++pLDst )
*pLDst = ~*pLDst;
assert(reinterpret_cast<unsigned char*>(pLDst) == pAlphaBits.get()+nImageSize);
implSetSurface(
cairo_image_surface_create_for_data(
pAlphaBits.get(),
CAIRO_FORMAT_A8,
pMaskBuf->mnWidth,
pMaskBuf->mnHeight,
pMaskBuf->mnScanlineSize));
}
else
{
// the alpha values need to be inverted for Cairo
// so big stupid copy and invert here
const int nImageSize = pMaskBuf->mnHeight * pMaskBuf->mnScanlineSize;
pAlphaBits.reset( new unsigned char[nImageSize] );
memcpy(pAlphaBits.get(), pMaskBuf->mpBits, nImageSize);
const sal_Int32 nBlackIndex = pMaskBuf->maPalette.GetBestIndex(BitmapColor(COL_BLACK));
if (nBlackIndex == 0)
{
// TODO: make upper layers use standard alpha
unsigned char* pDst = pAlphaBits.get();
for (int i = nImageSize; --i >= 0; ++pDst)
*pDst = ~*pDst;
}
implSetSurface(
cairo_image_surface_create_for_data(
pAlphaBits.get(),
CAIRO_FORMAT_A1,
pMaskBuf->mnWidth,
pMaskBuf->mnHeight,
pMaskBuf->mnScanlineSize));
}
}
};
class SystemDependentData_MaskHelper : public basegfx::SystemDependentData
{
private:
std::shared_ptr<MaskHelper> maMaskHelper;
public:
SystemDependentData_MaskHelper(
basegfx::SystemDependentDataManager& rSystemDependentDataManager,
const std::shared_ptr<MaskHelper>& rMaskHelper)
: basegfx::SystemDependentData(rSystemDependentDataManager),
maMaskHelper(rMaskHelper)
{
}
const std::shared_ptr<MaskHelper>& getMaskHelper() const { return maMaskHelper; };
virtual sal_Int64 estimateUsageInBytes() const override;
};
sal_Int64 SystemDependentData_MaskHelper::estimateUsageInBytes() const
{
return estimateUsageInBytesForSurfaceHelper(maMaskHelper.get());
}
// MM02 decide to use buffers or not
const char* pDisableMM02Goodies(getenv("SAL_DISABLE_MM02_GOODIES"));
bool bUseBuffer(nullptr == pDisableMM02Goodies);
tools::Long nMinimalSquareSizeToBuffer(64*64);
void tryToUseSourceBuffer(
const SalBitmap& rSourceBitmap,
std::shared_ptr<BitmapHelper>& rSurface)
{
// MM02 try to access buffered BitmapHelper
std::shared_ptr<SystemDependentData_BitmapHelper> pSystemDependentData_BitmapHelper;
const bool bBufferSource(bUseBuffer
&& rSourceBitmap.GetSize().Width() * rSourceBitmap.GetSize().Height() > nMinimalSquareSizeToBuffer);
if(bBufferSource)
{
const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rSourceBitmap));
pSystemDependentData_BitmapHelper = rSrcBmp.getSystemDependentData<SystemDependentData_BitmapHelper>();
if(pSystemDependentData_BitmapHelper)
{
// reuse buffered data
rSurface = pSystemDependentData_BitmapHelper->getBitmapHelper();
}
}
if(rSurface)
return;
// create data on-demand
rSurface = std::make_shared<BitmapHelper>(rSourceBitmap);
if(bBufferSource)
{
// add to buffering mechanism to potentially reuse next time
const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rSourceBitmap));
rSrcBmp.addOrReplaceSystemDependentData<SystemDependentData_BitmapHelper>(
ImplGetSystemDependentDataManager(),
rSurface);
}
}
void tryToUseMaskBuffer(
const SalBitmap& rMaskBitmap,
std::shared_ptr<MaskHelper>& rMask)
{
// MM02 try to access buffered MaskHelper
std::shared_ptr<SystemDependentData_MaskHelper> pSystemDependentData_MaskHelper;
const bool bBufferMask(bUseBuffer
&& rMaskBitmap.GetSize().Width() * rMaskBitmap.GetSize().Height() > nMinimalSquareSizeToBuffer);
if(bBufferMask)
{
const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rMaskBitmap));
pSystemDependentData_MaskHelper = rSrcBmp.getSystemDependentData<SystemDependentData_MaskHelper>();
if(pSystemDependentData_MaskHelper)
{
// reuse buffered data
rMask = pSystemDependentData_MaskHelper->getMaskHelper();
}
}
if(rMask)
return;
// create data on-demand
rMask = std::make_shared<MaskHelper>(rMaskBitmap);
if(bBufferMask)
{
// add to buffering mechanism to potentially reuse next time
const SvpSalBitmap& rSrcBmp(static_cast<const SvpSalBitmap&>(rMaskBitmap));
rSrcBmp.addOrReplaceSystemDependentData<SystemDependentData_MaskHelper>(
ImplGetSystemDependentDataManager(),
rMask);
}
}
}
bool SvpSalGraphics::drawAlphaBitmap( const SalTwoRect& rTR, const SalBitmap& rSourceBitmap, const SalBitmap& rAlphaBitmap )
{
if (rAlphaBitmap.GetBitCount() != 8 && rAlphaBitmap.GetBitCount() != 1)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap alpha depth case: " << rAlphaBitmap.GetBitCount());
return false;
}
// MM02 try to access buffered BitmapHelper
std::shared_ptr<BitmapHelper> aSurface;
tryToUseSourceBuffer(rSourceBitmap, aSurface);
cairo_surface_t* source = aSurface->getSurface(
rTR.mnDestWidth,
rTR.mnDestHeight);
if (!source)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap case");
return false;
}
// MM02 try to access buffered MaskHelper
std::shared_ptr<MaskHelper> aMask;
tryToUseMaskBuffer(rAlphaBitmap, aMask);
cairo_surface_t *mask = aMask->getSurface(
rTR.mnDestWidth,
rTR.mnDestHeight);
if (!mask)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap case");
return false;
}
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
cairo_rectangle(cr, rTR.mnDestX, rTR.mnDestY, rTR.mnDestWidth, rTR.mnDestHeight);
basegfx::B2DRange extents = getClippedFillDamage(cr);
cairo_clip(cr);
cairo_pattern_t* maskpattern = cairo_pattern_create_for_surface(mask);
cairo_translate(cr, rTR.mnDestX, rTR.mnDestY);
double fXScale = static_cast<double>(rTR.mnDestWidth)/rTR.mnSrcWidth;
double fYScale = static_cast<double>(rTR.mnDestHeight)/rTR.mnSrcHeight;
cairo_scale(cr, fXScale, fYScale);
cairo_set_source_surface(cr, source, -rTR.mnSrcX, -rTR.mnSrcY);
//tdf#114117 when stretching a single pixel width/height source to fit an area
//set extend and filter to stretch it with simplest expected interpolation
if ((fXScale != 1.0 && rTR.mnSrcWidth == 1) || (fYScale != 1.0 && rTR.mnSrcHeight == 1))
{
cairo_pattern_t* sourcepattern = cairo_get_source(cr);
cairo_pattern_set_extend(sourcepattern, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_filter(sourcepattern, CAIRO_FILTER_NEAREST);
cairo_pattern_set_extend(maskpattern, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_filter(maskpattern, CAIRO_FILTER_NEAREST);
}
//this block is just "cairo_mask_surface", but we have to make it explicit
//because of the cairo_pattern_set_filter etc we may want applied
cairo_matrix_t matrix;
cairo_matrix_init_translate(&matrix, rTR.mnSrcX, rTR.mnSrcY);
cairo_pattern_set_matrix(maskpattern, &matrix);
cairo_mask(cr, maskpattern);
cairo_pattern_destroy(maskpattern);
releaseCairoContext(cr, false, extents);
return true;
}
bool SvpSalGraphics::drawTransformedBitmap(
const basegfx::B2DPoint& rNull,
const basegfx::B2DPoint& rX,
const basegfx::B2DPoint& rY,
const SalBitmap& rSourceBitmap,
const SalBitmap* pAlphaBitmap)
{
if (pAlphaBitmap && pAlphaBitmap->GetBitCount() != 8 && pAlphaBitmap->GetBitCount() != 1)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawTransformedBitmap alpha depth case: " << pAlphaBitmap->GetBitCount());
return false;
}
// MM02 try to access buffered BitmapHelper
std::shared_ptr<BitmapHelper> aSurface;
tryToUseSourceBuffer(rSourceBitmap, aSurface);
const tools::Long nDestWidth(basegfx::fround(basegfx::B2DVector(rX - rNull).getLength()));
const tools::Long nDestHeight(basegfx::fround(basegfx::B2DVector(rY - rNull).getLength()));
cairo_surface_t* source(
aSurface->getSurface(
nDestWidth,
nDestHeight));
if(!source)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawTransformedBitmap case");
return false;
}
// MM02 try to access buffered MaskHelper
std::shared_ptr<MaskHelper> aMask;
if(nullptr != pAlphaBitmap)
{
tryToUseMaskBuffer(*pAlphaBitmap, aMask);
}
// access cairo_surface_t from MaskHelper
cairo_surface_t* mask(nullptr);
if(aMask)
{
mask = aMask->getSurface(
nDestWidth,
nDestHeight);
}
if(nullptr != pAlphaBitmap && nullptr == mask)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawTransformedBitmap case");
return false;
}
const Size aSize = rSourceBitmap.GetSize();
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
// setup the image transformation
// using the rNull,rX,rY points as destinations for the (0,0),(0,Width),(Height,0) source points
const basegfx::B2DVector aXRel = rX - rNull;
const basegfx::B2DVector aYRel = rY - rNull;
cairo_matrix_t matrix;
cairo_matrix_init(&matrix,
aXRel.getX()/aSize.Width(), aXRel.getY()/aSize.Width(),
aYRel.getX()/aSize.Height(), aYRel.getY()/aSize.Height(),
rNull.getX(), rNull.getY());
cairo_transform(cr, &matrix);
cairo_rectangle(cr, 0, 0, aSize.Width(), aSize.Height());
basegfx::B2DRange extents = getClippedFillDamage(cr);
cairo_clip(cr);
cairo_set_source_surface(cr, source, 0, 0);
if (mask)
cairo_mask_surface(cr, mask, 0, 0);
else
cairo_paint(cr);
releaseCairoContext(cr, false, extents);
return true;
}
void SvpSalGraphics::clipRegion(cairo_t* cr, const vcl::Region& rClipRegion)
{
RectangleVector aRectangles;
if (!rClipRegion.IsEmpty())
{
rClipRegion.GetRegionRectangles(aRectangles);
}
if (!aRectangles.empty())
{
for (auto const& rectangle : aRectangles)
{
cairo_rectangle(cr, rectangle.Left(), rectangle.Top(), rectangle.GetWidth(), rectangle.GetHeight());
}
cairo_clip(cr);
}
}
void SvpSalGraphics::clipRegion(cairo_t* cr)
{
SvpSalGraphics::clipRegion(cr, m_aClipRegion);
}
bool SvpSalGraphics::drawAlphaRect(tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight, sal_uInt8 nTransparency)
{
const bool bHasFill(m_aFillColor != SALCOLOR_NONE);
const bool bHasLine(m_aLineColor != SALCOLOR_NONE);
if(!(bHasFill || bHasLine))
{
return true;
}
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
const double fTransparency = nTransparency * (1.0/100);
// To make releaseCairoContext work, use empty extents
basegfx::B2DRange extents;
if (bHasFill)
{
cairo_rectangle(cr, nX, nY, nWidth, nHeight);
applyColor(cr, m_aFillColor, fTransparency);
// set FillDamage
extents = getClippedFillDamage(cr);
cairo_fill(cr);
}
if (bHasLine)
{
// PixelOffset used: Set PixelOffset as linear transformation
// Note: Was missing here - probably not by purpose (?)
cairo_matrix_t aMatrix;
cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
cairo_set_matrix(cr, &aMatrix);
cairo_rectangle(cr, nX, nY, nWidth, nHeight);
applyColor(cr, m_aLineColor, fTransparency);
// expand with possible StrokeDamage
basegfx::B2DRange stroke_extents = getClippedStrokeDamage(cr);
stroke_extents.transform(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
extents.expand(stroke_extents);
cairo_stroke(cr);
}
releaseCairoContext(cr, false, extents);
return true;
}
SvpSalGraphics::SvpSalGraphics()
: m_pSurface(nullptr)
, m_fScale(1.0)
, m_aLineColor(Color(0x00, 0x00, 0x00))
, m_aFillColor(Color(0xFF, 0xFF, 0XFF))
, m_ePaintMode(PaintMode::Over)
, m_aTextRenderImpl(*this)
{
bool bLOKActive = comphelper::LibreOfficeKit::isActive();
if (!initWidgetDrawBackends(bLOKActive))
{
if (bLOKActive)
m_pWidgetDraw.reset(new vcl::CustomWidgetDraw(*this));
}
}
SvpSalGraphics::~SvpSalGraphics()
{
ReleaseFonts();
}
void SvpSalGraphics::setSurface(cairo_surface_t* pSurface, const basegfx::B2IVector& rSize)
{
m_pSurface = pSurface;
m_aFrameSize = rSize;
dl_cairo_surface_get_device_scale(pSurface, &m_fScale, nullptr);
ResetClipRegion();
}
void SvpSalGraphics::GetResolution( sal_Int32& rDPIX, sal_Int32& rDPIY )
{
rDPIX = rDPIY = 96;
}
sal_uInt16 SvpSalGraphics::GetBitCount() const
{
if (cairo_surface_get_content(m_pSurface) != CAIRO_CONTENT_COLOR_ALPHA)
return 1;
return 32;
}
tools::Long SvpSalGraphics::GetGraphicsWidth() const
{
return m_pSurface ? m_aFrameSize.getX() : 0;
}
void SvpSalGraphics::ResetClipRegion()
{
m_aClipRegion.SetNull();
}
bool SvpSalGraphics::setClipRegion( const vcl::Region& i_rClip )
{
m_aClipRegion = i_rClip;
return true;
}
void SvpSalGraphics::SetLineColor()
{
m_aLineColor = SALCOLOR_NONE;
}
void SvpSalGraphics::SetLineColor( Color nColor )
{
m_aLineColor = nColor;
}
void SvpSalGraphics::SetFillColor()
{
m_aFillColor = SALCOLOR_NONE;
}
void SvpSalGraphics::SetFillColor( Color nColor )
{
m_aFillColor = nColor;
}
void SvpSalGraphics::SetXORMode(bool bSet, bool )
{
m_ePaintMode = bSet ? PaintMode::Xor : PaintMode::Over;
}
void SvpSalGraphics::SetROPLineColor( SalROPColor nROPColor )
{
switch( nROPColor )
{
case SalROPColor::N0:
m_aLineColor = Color(0, 0, 0);
break;
case SalROPColor::N1:
m_aLineColor = Color(0xff, 0xff, 0xff);
break;
case SalROPColor::Invert:
m_aLineColor = Color(0xff, 0xff, 0xff);
break;
}
}
void SvpSalGraphics::SetROPFillColor( SalROPColor nROPColor )
{
switch( nROPColor )
{
case SalROPColor::N0:
m_aFillColor = Color(0, 0, 0);
break;
case SalROPColor::N1:
m_aFillColor = Color(0xff, 0xff, 0xff);
break;
case SalROPColor::Invert:
m_aFillColor = Color(0xff, 0xff, 0xff);
break;
}
}
void SvpSalGraphics::drawPixel( tools::Long nX, tools::Long nY )
{
if (m_aLineColor != SALCOLOR_NONE)
{
drawPixel(nX, nY, m_aLineColor);
}
}
void SvpSalGraphics::drawPixel( tools::Long nX, tools::Long nY, Color aColor )
{
cairo_t* cr = getCairoContext(true);
clipRegion(cr);
cairo_rectangle(cr, nX, nY, 1, 1);
applyColor(cr, aColor, 0.0);
cairo_fill(cr);
basegfx::B2DRange extents = getClippedFillDamage(cr);
releaseCairoContext(cr, true, extents);
}
void SvpSalGraphics::drawRect( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight )
{
// because of the -1 hack we have to do fill and draw separately
Color aOrigFillColor = m_aFillColor;
Color aOrigLineColor = m_aLineColor;
m_aFillColor = SALCOLOR_NONE;
m_aLineColor = SALCOLOR_NONE;
if (aOrigFillColor != SALCOLOR_NONE)
{
basegfx::B2DPolygon aRect = basegfx::utils::createPolygonFromRect(basegfx::B2DRectangle(nX, nY, nX+nWidth, nY+nHeight));
m_aFillColor = aOrigFillColor;
drawPolyPolygon(
basegfx::B2DHomMatrix(),
basegfx::B2DPolyPolygon(aRect),
0.0);
m_aFillColor = SALCOLOR_NONE;
}
if (aOrigLineColor != SALCOLOR_NONE)
{
// need same -1 hack as X11SalGraphicsImpl::drawRect
basegfx::B2DPolygon aRect = basegfx::utils::createPolygonFromRect(basegfx::B2DRectangle( nX, nY, nX+nWidth-1, nY+nHeight-1));
m_aLineColor = aOrigLineColor;
drawPolyPolygon(
basegfx::B2DHomMatrix(),
basegfx::B2DPolyPolygon(aRect),
0.0);
m_aLineColor = SALCOLOR_NONE;
}
m_aFillColor = aOrigFillColor;
m_aLineColor = aOrigLineColor;
}
void SvpSalGraphics::drawPolyLine(sal_uInt32 nPoints, const Point* pPtAry)
{
basegfx::B2DPolygon aPoly;
aPoly.append(basegfx::B2DPoint(pPtAry->getX(), pPtAry->getY()), nPoints);
for (sal_uInt32 i = 1; i < nPoints; ++i)
aPoly.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].getX(), pPtAry[i].getY()));
aPoly.setClosed(false);
drawPolyLine(
basegfx::B2DHomMatrix(),
aPoly,
0.0,
1.0,
nullptr, // MM01
basegfx::B2DLineJoin::Miter,
css::drawing::LineCap_BUTT,
basegfx::deg2rad(15.0) /*default*/,
false);
}
void SvpSalGraphics::drawPolygon(sal_uInt32 nPoints, const Point* pPtAry)
{
basegfx::B2DPolygon aPoly;
aPoly.append(basegfx::B2DPoint(pPtAry->getX(), pPtAry->getY()), nPoints);
for (sal_uInt32 i = 1; i < nPoints; ++i)
aPoly.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].getX(), pPtAry[i].getY()));
drawPolyPolygon(
basegfx::B2DHomMatrix(),
basegfx::B2DPolyPolygon(aPoly),
0.0);
}
void SvpSalGraphics::drawPolyPolygon(sal_uInt32 nPoly,
const sal_uInt32* pPointCounts,
const Point** pPtAry)
{
basegfx::B2DPolyPolygon aPolyPoly;
for(sal_uInt32 nPolygon = 0; nPolygon < nPoly; ++nPolygon)
{
sal_uInt32 nPoints = pPointCounts[nPolygon];
if (nPoints)
{
const Point* pPoints = pPtAry[nPolygon];
basegfx::B2DPolygon aPoly;
aPoly.append( basegfx::B2DPoint(pPoints->getX(), pPoints->getY()), nPoints);
for (sal_uInt32 i = 1; i < nPoints; ++i)
aPoly.setB2DPoint(i, basegfx::B2DPoint( pPoints[i].getX(), pPoints[i].getY()));
aPolyPoly.append(aPoly);
}
}
drawPolyPolygon(
basegfx::B2DHomMatrix(),
aPolyPoly,
0.0);
}
static basegfx::B2DPoint impPixelSnap(
const basegfx::B2DPolygon& rPolygon,
const basegfx::B2DHomMatrix& rObjectToDevice,
basegfx::B2DHomMatrix& rObjectToDeviceInv,
sal_uInt32 nIndex)
{
const sal_uInt32 nCount(rPolygon.count());
// get the data
const basegfx::B2ITuple aPrevTuple(basegfx::fround(rObjectToDevice * rPolygon.getB2DPoint((nIndex + nCount - 1) % nCount)));
const basegfx::B2DPoint aCurrPoint(rObjectToDevice * rPolygon.getB2DPoint(nIndex));
const basegfx::B2ITuple aCurrTuple(basegfx::fround(aCurrPoint));
const basegfx::B2ITuple aNextTuple(basegfx::fround(rObjectToDevice * rPolygon.getB2DPoint((nIndex + 1) % nCount)));
// get the states
const bool bPrevVertical(aPrevTuple.getX() == aCurrTuple.getX());
const bool bNextVertical(aNextTuple.getX() == aCurrTuple.getX());
const bool bPrevHorizontal(aPrevTuple.getY() == aCurrTuple.getY());
const bool bNextHorizontal(aNextTuple.getY() == aCurrTuple.getY());
const bool bSnapX(bPrevVertical || bNextVertical);
const bool bSnapY(bPrevHorizontal || bNextHorizontal);
if(bSnapX || bSnapY)
{
basegfx::B2DPoint aSnappedPoint(
bSnapX ? aCurrTuple.getX() : aCurrPoint.getX(),
bSnapY ? aCurrTuple.getY() : aCurrPoint.getY());
if(rObjectToDeviceInv.isIdentity())
{
rObjectToDeviceInv = rObjectToDevice;
rObjectToDeviceInv.invert();
}
aSnappedPoint *= rObjectToDeviceInv;
return aSnappedPoint;
}
return rPolygon.getB2DPoint(nIndex);
}
// Remove bClosePath: Checked that the already used mechanism for Win using
// Gdiplus already relies on rPolygon.isClosed(), so should be safe to replace
// this.
// For PixelSnap we need the ObjectToDevice transformation here now. This is a
// special case relative to the also executed LineDraw-Offset of (0.5, 0.5) in
// DeviceCoordinates: The LineDraw-Offset is applied *after* the snap, so we
// need the ObjectToDevice transformation *without* that offset here to do the
// same. The LineDraw-Offset will be applied by the callers using a linear
// transformation for Cairo now
// For support of PixelSnapHairline we also need the ObjectToDevice transformation
// and a method (same as in gdiimpl.cxx for Win and Gdiplus). This is needed e.g.
// for Chart-content visualization. CAUTION: It's not the same as PixelSnap (!)
// tdf#129845 add reply value to allow counting a point/byte/size measurement to
// be included
static size_t AddPolygonToPath(
cairo_t* cr,
const basegfx::B2DPolygon& rPolygon,
const basegfx::B2DHomMatrix& rObjectToDevice,
bool bPixelSnap,
bool bPixelSnapHairline)
{
// short circuit if there is nothing to do
const sal_uInt32 nPointCount(rPolygon.count());
size_t nSizeMeasure(0);
if(0 == nPointCount)
{
return nSizeMeasure;
}
const bool bHasCurves(rPolygon.areControlPointsUsed());
const bool bClosePath(rPolygon.isClosed());
const bool bObjectToDeviceUsed(!rObjectToDevice.isIdentity());
basegfx::B2DHomMatrix aObjectToDeviceInv;
basegfx::B2DPoint aLast;
for( sal_uInt32 nPointIdx = 0, nPrevIdx = 0;; nPrevIdx = nPointIdx++ )
{
int nClosedIdx = nPointIdx;
if( nPointIdx >= nPointCount )
{
// prepare to close last curve segment if needed
if( bClosePath && (nPointIdx == nPointCount) )
{
nClosedIdx = 0;
}
else
{
break;
}
}
basegfx::B2DPoint aPoint(rPolygon.getB2DPoint(nClosedIdx));
if(bPixelSnap)
{
// snap device coordinates to full pixels
if(bObjectToDeviceUsed)
{
// go to DeviceCoordinates
aPoint *= rObjectToDevice;
}
// snap by rounding
aPoint.setX( basegfx::fround( aPoint.getX() ) );
aPoint.setY( basegfx::fround( aPoint.getY() ) );
if(bObjectToDeviceUsed)
{
if(aObjectToDeviceInv.isIdentity())
{
aObjectToDeviceInv = rObjectToDevice;
aObjectToDeviceInv.invert();
}
// go back to ObjectCoordinates
aPoint *= aObjectToDeviceInv;
}
}
if(bPixelSnapHairline)
{
// snap horizontal and vertical lines (mainly used in Chart for
// 'nicer' AAing)
aPoint = impPixelSnap(rPolygon, rObjectToDevice, aObjectToDeviceInv, nClosedIdx);
}
if( !nPointIdx )
{
// first point => just move there
cairo_move_to(cr, aPoint.getX(), aPoint.getY());
aLast = aPoint;
continue;
}
bool bPendingCurve(false);
if( bHasCurves )
{
bPendingCurve = rPolygon.isNextControlPointUsed( nPrevIdx );
bPendingCurve |= rPolygon.isPrevControlPointUsed( nClosedIdx );
}
if( !bPendingCurve ) // line segment
{
cairo_line_to(cr, aPoint.getX(), aPoint.getY());
nSizeMeasure++;
}
else // cubic bezier segment
{
basegfx::B2DPoint aCP1 = rPolygon.getNextControlPoint( nPrevIdx );
basegfx::B2DPoint aCP2 = rPolygon.getPrevControlPoint( nClosedIdx );
// tdf#99165 if the control points are 'empty', create the mathematical
// correct replacement ones to avoid problems with the graphical sub-system
// 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 (aCP1.equal(aLast))
{
aCP1 = aLast + ((aCP2 - aLast) * 0.0005);
}
if(aCP2.equal(aPoint))
{
aCP2 = aPoint + ((aCP1 - aPoint) * 0.0005);
}
cairo_curve_to(cr, aCP1.getX(), aCP1.getY(), aCP2.getX(), aCP2.getY(),
aPoint.getX(), aPoint.getY());
// take some bigger measure for curve segments - too expensive to subdivide
// here and that precision not needed, but four (2 points, 2 control-points)
// would be a too low weight
nSizeMeasure += 10;
}
aLast = aPoint;
}
if( bClosePath )
{
cairo_close_path(cr);
}
return nSizeMeasure;
}
void SvpSalGraphics::drawLine( tools::Long nX1, tools::Long nY1, tools::Long nX2, tools::Long nY2 )
{
basegfx::B2DPolygon aPoly;
// PixelOffset used: To not mix with possible PixelSnap, cannot do
// directly on coordinates as tried before - despite being already 'snapped'
// due to being integer. If it would be directly added here, it would be
// 'snapped' again when !getAntiAlias(), losing the (0.5, 0.5) offset
aPoly.append(basegfx::B2DPoint(nX1, nY1));
aPoly.append(basegfx::B2DPoint(nX2, nY2));
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
// PixelOffset used: Set PixelOffset as linear transformation
cairo_matrix_t aMatrix;
cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
cairo_set_matrix(cr, &aMatrix);
AddPolygonToPath(
cr,
aPoly,
basegfx::B2DHomMatrix(),
!getAntiAlias(),
false);
applyColor(cr, m_aLineColor);
basegfx::B2DRange extents = getClippedStrokeDamage(cr);
extents.transform(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
cairo_stroke(cr);
releaseCairoContext(cr, false, extents);
}
namespace {
class SystemDependentData_CairoPath : public basegfx::SystemDependentData
{
private:
// the path data itself
cairo_path_t* mpCairoPath;
// all other values the path data is based on and
// need to be compared with to check for data validity
bool mbNoJoin;
bool mbAntiAlias;
std::vector< double > maStroke;
public:
SystemDependentData_CairoPath(
basegfx::SystemDependentDataManager& rSystemDependentDataManager,
size_t nSizeMeasure,
cairo_t* cr,
bool bNoJoin,
bool bAntiAlias,
const std::vector< double >* pStroke); // MM01
virtual ~SystemDependentData_CairoPath() override;
// read access
cairo_path_t* getCairoPath() { return mpCairoPath; }
bool getNoJoin() const { return mbNoJoin; }
bool getAntiAlias() const { return mbAntiAlias; }
const std::vector< double >& getStroke() const { return maStroke; }
virtual sal_Int64 estimateUsageInBytes() const override;
};
}
SystemDependentData_CairoPath::SystemDependentData_CairoPath(
basegfx::SystemDependentDataManager& rSystemDependentDataManager,
size_t nSizeMeasure,
cairo_t* cr,
bool bNoJoin,
bool bAntiAlias,
const std::vector< double >* pStroke)
: basegfx::SystemDependentData(rSystemDependentDataManager),
mpCairoPath(nullptr),
mbNoJoin(bNoJoin),
mbAntiAlias(bAntiAlias),
maStroke()
{
// tdf#129845 only create a copy of the path when nSizeMeasure is
// bigger than some decent threshold
if(nSizeMeasure > 50)
{
mpCairoPath = cairo_copy_path(cr);
if(nullptr != pStroke)
{
maStroke = *pStroke;
}
}
}
SystemDependentData_CairoPath::~SystemDependentData_CairoPath()
{
if(nullptr != mpCairoPath)
{
cairo_path_destroy(mpCairoPath);
mpCairoPath = nullptr;
}
}
sal_Int64 SystemDependentData_CairoPath::estimateUsageInBytes() const
{
// tdf#129845 by using the default return value of zero when no path
// was created, SystemDependentData::calculateCombinedHoldCyclesInSeconds
// will do the right thing and not buffer this entry at all
sal_Int64 nRetval(0);
if(nullptr != mpCairoPath)
{
// per node
// - num_data incarnations of
// - sizeof(cairo_path_data_t) which is a union of defines and point data
// thus may 2 x sizeof(double)
nRetval = mpCairoPath->num_data * sizeof(cairo_path_data_t);
}
return nRetval;
}
bool SvpSalGraphics::drawPolyLine(
const basegfx::B2DHomMatrix& rObjectToDevice,
const basegfx::B2DPolygon& rPolyLine,
double fTransparency,
double fLineWidth,
const std::vector< double >* pStroke, // MM01
basegfx::B2DLineJoin eLineJoin,
css::drawing::LineCap eLineCap,
double fMiterMinimumAngle,
bool bPixelSnapHairline)
{
// short circuit if there is nothing to do
if(0 == rPolyLine.count() || fTransparency < 0.0 || fTransparency >= 1.0)
{
return true;
}
// Wrap call to static version of ::drawPolyLine by
// preparing/getting some local data and parameters
// due to usage in vcl/unx/generic/gdi/salgdi.cxx.
// This is mainly about extended handling of extents
// and the way destruction of CairoContext is handled
// due to current XOR stuff
cairo_t* cr = getCairoContext(false);
basegfx::B2DRange aExtents;
clipRegion(cr);
bool bRetval(
drawPolyLine(
cr,
&aExtents,
m_aLineColor,
getAntiAlias(),
rObjectToDevice,
rPolyLine,
fTransparency,
fLineWidth,
pStroke, // MM01
eLineJoin,
eLineCap,
fMiterMinimumAngle,
bPixelSnapHairline));
releaseCairoContext(cr, false, aExtents);
return bRetval;
}
bool SvpSalGraphics::drawPolyLine(
cairo_t* cr,
basegfx::B2DRange* pExtents,
const Color& rLineColor,
bool bAntiAlias,
const basegfx::B2DHomMatrix& rObjectToDevice,
const basegfx::B2DPolygon& rPolyLine,
double fTransparency,
double fLineWidth,
const std::vector< double >* pStroke, // MM01
basegfx::B2DLineJoin eLineJoin,
css::drawing::LineCap eLineCap,
double fMiterMinimumAngle,
bool bPixelSnapHairline)
{
// short circuit if there is nothing to do
if(0 == rPolyLine.count() || fTransparency < 0.0 || fTransparency >= 1.0)
{
return true;
}
// need to check/handle LineWidth when ObjectToDevice transformation is used
const bool bObjectToDeviceIsIdentity(rObjectToDevice.isIdentity());
// tdf#124848 calculate-back logical LineWidth for a hairline
// since this implementation hands over the transformation to
// the graphic sub-system
if(fLineWidth == 0)
{
fLineWidth = 1.0;
if(!bObjectToDeviceIsIdentity)
{
basegfx::B2DHomMatrix aObjectToDeviceInv(rObjectToDevice);
aObjectToDeviceInv.invert();
fLineWidth = (aObjectToDeviceInv * basegfx::B2DVector(fLineWidth, 0)).getLength();
}
}
// PixelOffset used: Need to reflect in linear transformation
cairo_matrix_t aMatrix;
basegfx::B2DHomMatrix aDamageMatrix(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
if (bObjectToDeviceIsIdentity)
{
// Set PixelOffset as requested
cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
}
else
{
// Prepare ObjectToDevice transformation. Take PixelOffset for Lines into
// account: Multiply from left to act in DeviceCoordinates
aDamageMatrix = aDamageMatrix * rObjectToDevice;
cairo_matrix_init(
&aMatrix,
aDamageMatrix.get( 0, 0 ),
aDamageMatrix.get( 1, 0 ),
aDamageMatrix.get( 0, 1 ),
aDamageMatrix.get( 1, 1 ),
aDamageMatrix.get( 0, 2 ),
aDamageMatrix.get( 1, 2 ));
}
// set linear transformation
cairo_set_matrix(cr, &aMatrix);
// setup line attributes
cairo_line_join_t eCairoLineJoin = CAIRO_LINE_JOIN_MITER;
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:
case basegfx::B2DLineJoin::Miter:
eCairoLineJoin = CAIRO_LINE_JOIN_MITER;
break;
}
// convert miter minimum angle to miter limit
double fMiterLimit = 1.0 / sin( fMiterMinimumAngle / 2.0);
// 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,
rLineColor.GetRed()/255.0,
rLineColor.GetGreen()/255.0,
rLineColor.GetBlue()/255.0,
1.0-fTransparency);
cairo_set_line_join(cr, eCairoLineJoin);
cairo_set_line_cap(cr, eCairoLineCap);
cairo_set_line_width(cr, fLineWidth);
cairo_set_miter_limit(cr, fMiterLimit);
// try to access buffered data
std::shared_ptr<SystemDependentData_CairoPath> pSystemDependentData_CairoPath(
rPolyLine.getSystemDependentData<SystemDependentData_CairoPath>());
// MM01 need to do line dashing as fallback stuff here now
const double fDotDashLength(nullptr != pStroke ? std::accumulate(pStroke->begin(), pStroke->end(), 0.0) : 0.0);
const bool bStrokeUsed(0.0 != fDotDashLength);
assert(!bStrokeUsed || (bStrokeUsed && pStroke));
// MM01 decide if to stroke directly
static bool bDoDirectCairoStroke(true);
// MM01 activate to stroke directly
if(bDoDirectCairoStroke && bStrokeUsed)
{
cairo_set_dash(cr, pStroke->data(), pStroke->size(), 0.0);
}
if(!bDoDirectCairoStroke && pSystemDependentData_CairoPath)
{
// MM01 - check on stroke change. Used against not used, or if both used,
// equal or different?
const bool bStrokeWasUsed(!pSystemDependentData_CairoPath->getStroke().empty());
if(bStrokeWasUsed != bStrokeUsed
|| (bStrokeUsed && *pStroke != pSystemDependentData_CairoPath->getStroke()))
{
// data invalid, forget
pSystemDependentData_CairoPath.reset();
}
}
// check for basegfx::B2DLineJoin::NONE to react accordingly
const bool bNoJoin((basegfx::B2DLineJoin::NONE == eLineJoin
&& basegfx::fTools::more(fLineWidth, 0.0)));
if(pSystemDependentData_CairoPath)
{
// check data validity
if(nullptr == pSystemDependentData_CairoPath->getCairoPath()
|| pSystemDependentData_CairoPath->getNoJoin() != bNoJoin
|| pSystemDependentData_CairoPath->getAntiAlias() != bAntiAlias
|| bPixelSnapHairline /*tdf#124700*/ )
{
// data invalid, forget
pSystemDependentData_CairoPath.reset();
}
}
if(pSystemDependentData_CairoPath)
{
// re-use data
cairo_append_path(cr, pSystemDependentData_CairoPath->getCairoPath());
}
else
{
// create data
size_t nSizeMeasure(0);
// MM01 need to do line dashing as fallback stuff here now
basegfx::B2DPolyPolygon aPolyPolygonLine;
if(!bDoDirectCairoStroke && bStrokeUsed)
{
// apply LineStyle
basegfx::utils::applyLineDashing(
rPolyLine, // source
*pStroke, // pattern
&aPolyPolygonLine, // target for lines
nullptr, // target for gaps
fDotDashLength); // full length if available
}
else
{
// no line dashing or direct stroke, just copy
aPolyPolygonLine.append(rPolyLine);
}
// MM01 checked/verified for Cairo
for(sal_uInt32 a(0); a < aPolyPolygonLine.count(); a++)
{
const basegfx::B2DPolygon aPolyLine(aPolyPolygonLine.getB2DPolygon(a));
if (!bNoJoin)
{
// PixelOffset now reflected in linear transformation used
nSizeMeasure += AddPolygonToPath(
cr,
aPolyLine,
rObjectToDevice, // ObjectToDevice *without* LineDraw-Offset
!bAntiAlias,
bPixelSnapHairline);
}
else
{
const sal_uInt32 nPointCount(aPolyLine.count());
const sal_uInt32 nEdgeCount(aPolyLine.isClosed() ? nPointCount : nPointCount - 1);
basegfx::B2DPolygon aEdge;
aEdge.append(aPolyLine.getB2DPoint(0));
aEdge.append(basegfx::B2DPoint(0.0, 0.0));
for (sal_uInt32 i(0); i < nEdgeCount; i++)
{
const sal_uInt32 nNextIndex((i + 1) % nPointCount);
aEdge.setB2DPoint(1, aPolyLine.getB2DPoint(nNextIndex));
aEdge.setNextControlPoint(0, aPolyLine.getNextControlPoint(i));
aEdge.setPrevControlPoint(1, aPolyLine.getPrevControlPoint(nNextIndex));
// PixelOffset now reflected in linear transformation used
nSizeMeasure += AddPolygonToPath(
cr,
aEdge,
rObjectToDevice, // ObjectToDevice *without* LineDraw-Offset
!bAntiAlias,
bPixelSnapHairline);
// prepare next step
aEdge.setB2DPoint(0, aEdge.getB2DPoint(1));
}
}
}
// copy and add to buffering mechanism
if (!bPixelSnapHairline /*tdf#124700*/)
{
pSystemDependentData_CairoPath = rPolyLine.addOrReplaceSystemDependentData<SystemDependentData_CairoPath>(
ImplGetSystemDependentDataManager(),
nSizeMeasure,
cr,
bNoJoin,
bAntiAlias,
pStroke);
}
}
// extract extents
if (pExtents)
{
*pExtents = getClippedStrokeDamage(cr);
// transform also extents (ranges) of damage so they can be correctly redrawn
pExtents->transform(aDamageMatrix);
}
// draw and consume
cairo_stroke(cr);
return true;
}
bool SvpSalGraphics::drawPolyLineBezier( sal_uInt32,
const Point*,
const PolyFlags* )
{
SAL_INFO("vcl.gdi", "unsupported SvpSalGraphics::drawPolyLineBezier case");
return false;
}
bool SvpSalGraphics::drawPolygonBezier( sal_uInt32,
const Point*,
const PolyFlags* )
{
SAL_INFO("vcl.gdi", "unsupported SvpSalGraphics::drawPolygonBezier case");
return false;
}
bool SvpSalGraphics::drawPolyPolygonBezier( sal_uInt32,
const sal_uInt32*,
const Point* const*,
const PolyFlags* const* )
{
SAL_INFO("vcl.gdi", "unsupported SvpSalGraphics::drawPolyPolygonBezier case");
return false;
}
namespace
{
void add_polygon_path(cairo_t* cr, const basegfx::B2DPolyPolygon& rPolyPolygon, const basegfx::B2DHomMatrix& rObjectToDevice, bool bPixelSnap)
{
// try to access buffered data
std::shared_ptr<SystemDependentData_CairoPath> pSystemDependentData_CairoPath(
rPolyPolygon.getSystemDependentData<SystemDependentData_CairoPath>());
if(pSystemDependentData_CairoPath)
{
// re-use data
cairo_append_path(cr, pSystemDependentData_CairoPath->getCairoPath());
}
else
{
// create data
size_t nSizeMeasure(0);
for (const auto & rPoly : rPolyPolygon)
{
// PixelOffset used: Was dependent of 'm_aLineColor != SALCOLOR_NONE'
// Adapt setupPolyPolygon-users to set a linear transformation to achieve PixelOffset
nSizeMeasure += AddPolygonToPath(
cr,
rPoly,
rObjectToDevice,
bPixelSnap,
false);
}
// copy and add to buffering mechanism
// for decisions how/what to buffer, see Note in WinSalGraphicsImpl::drawPolyPolygon
pSystemDependentData_CairoPath = rPolyPolygon.addOrReplaceSystemDependentData<SystemDependentData_CairoPath>(
ImplGetSystemDependentDataManager(),
nSizeMeasure,
cr,
false,
false,
nullptr);
}
}
}
bool SvpSalGraphics::drawPolyPolygon(
const basegfx::B2DHomMatrix& rObjectToDevice,
const basegfx::B2DPolyPolygon& rPolyPolygon,
double fTransparency)
{
const bool bHasFill(m_aFillColor != SALCOLOR_NONE);
const bool bHasLine(m_aLineColor != SALCOLOR_NONE);
if(0 == rPolyPolygon.count() || !(bHasFill || bHasLine) || fTransparency < 0.0 || fTransparency >= 1.0)
{
return true;
}
cairo_t* cr = getCairoContext(true);
clipRegion(cr);
// Set full (Object-to-Device) transformation - if used
if(!rObjectToDevice.isIdentity())
{
cairo_matrix_t aMatrix;
cairo_matrix_init(
&aMatrix,
rObjectToDevice.get( 0, 0 ),
rObjectToDevice.get( 1, 0 ),
rObjectToDevice.get( 0, 1 ),
rObjectToDevice.get( 1, 1 ),
rObjectToDevice.get( 0, 2 ),
rObjectToDevice.get( 1, 2 ));
cairo_set_matrix(cr, &aMatrix);
}
// To make releaseCairoContext work, use empty extents
basegfx::B2DRange extents;
if (bHasFill)
{
add_polygon_path(cr, rPolyPolygon, rObjectToDevice, !getAntiAlias());
applyColor(cr, m_aFillColor, fTransparency);
// Get FillDamage (will be extended for LineDamage below)
extents = getClippedFillDamage(cr);
cairo_fill(cr);
}
if (bHasLine)
{
// PixelOffset used: Set PixelOffset as linear transformation
cairo_matrix_t aMatrix;
cairo_matrix_init_translate(&aMatrix, 0.5, 0.5);
cairo_set_matrix(cr, &aMatrix);
add_polygon_path(cr, rPolyPolygon, rObjectToDevice, !getAntiAlias());
applyColor(cr, m_aLineColor, fTransparency);
// expand with possible StrokeDamage
basegfx::B2DRange stroke_extents = getClippedStrokeDamage(cr);
stroke_extents.transform(basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5));
extents.expand(stroke_extents);
cairo_stroke(cr);
}
// if transformation has been applied, transform also extents (ranges)
// of damage so they can be correctly redrawn
extents.transform(rObjectToDevice);
releaseCairoContext(cr, true, extents);
return true;
}
bool SvpSalGraphics::drawGradient(const tools::PolyPolygon& rPolyPolygon, const Gradient& rGradient)
{
if (rGradient.GetStyle() != GradientStyle::Linear
&& rGradient.GetStyle() != GradientStyle::Radial)
return false; // unsupported
if (rGradient.GetSteps() != 0)
return false; // We can't tell cairo how many colors to use in the gradient.
cairo_t* cr = getCairoContext(true);
clipRegion(cr);
tools::Rectangle aInputRect(rPolyPolygon.GetBoundRect());
if( rPolyPolygon.IsRect())
{
// Rect->Polygon conversion loses the right and bottom edge, fix that.
aInputRect.AdjustRight( 1 );
aInputRect.AdjustBottom( 1 );
basegfx::B2DHomMatrix rObjectToDevice;
AddPolygonToPath(cr, tools::Polygon(aInputRect).getB2DPolygon(), rObjectToDevice, !getAntiAlias(), false);
}
else
{
basegfx::B2DPolyPolygon aB2DPolyPolygon(rPolyPolygon.getB2DPolyPolygon());
for (auto const & rPolygon : aB2DPolyPolygon)
{
basegfx::B2DHomMatrix rObjectToDevice;
AddPolygonToPath(cr, rPolygon, rObjectToDevice, !getAntiAlias(), false);
}
}
Gradient aGradient(rGradient);
tools::Rectangle aBoundRect;
Point aCenter;
aGradient.SetAngle(aGradient.GetAngle() + 2700_deg10);
aGradient.GetBoundRect(aInputRect, aBoundRect, aCenter);
Color aStartColor = aGradient.GetStartColor();
Color aEndColor = aGradient.GetEndColor();
cairo_pattern_t* pattern;
if (rGradient.GetStyle() == GradientStyle::Linear)
{
tools::Polygon aPoly(aBoundRect);
aPoly.Rotate(aCenter, aGradient.GetAngle() % 3600_deg10);
pattern = cairo_pattern_create_linear(aPoly[0].X(), aPoly[0].Y(), aPoly[1].X(), aPoly[1].Y());
}
else
{
double radius = std::max(aBoundRect.GetWidth() / 2.0, aBoundRect.GetHeight() / 2.0);
// Move the center a bit to the top-left (the default VCL algorithm is a bit off-center that way,
// cairo is the opposite way).
pattern = cairo_pattern_create_radial(aCenter.X() - 0.5, aCenter.Y() - 0.5, 0,
aCenter.X() - 0.5, aCenter.Y() - 0.5, radius);
std::swap( aStartColor, aEndColor );
}
cairo_pattern_add_color_stop_rgba(pattern, aGradient.GetBorder() / 100.0,
aStartColor.GetRed() * aGradient.GetStartIntensity() / 25500.0,
aStartColor.GetGreen() * aGradient.GetStartIntensity() / 25500.0,
aStartColor.GetBlue() * aGradient.GetStartIntensity() / 25500.0,
1.0);
cairo_pattern_add_color_stop_rgba(pattern, 1.0,
aEndColor.GetRed() * aGradient.GetEndIntensity() / 25500.0,
aEndColor.GetGreen() * aGradient.GetEndIntensity() / 25500.0,
aEndColor.GetBlue() * aGradient.GetEndIntensity() / 25500.0,
1.0);
cairo_set_source(cr, pattern);
basegfx::B2DRange extents = getClippedFillDamage(cr);
cairo_fill_preserve(cr);
releaseCairoContext(cr, true, extents);
return true;
}
bool SvpSalGraphics::implDrawGradient(basegfx::B2DPolyPolygon const & rPolyPolygon, SalGradient const & rGradient)
{
cairo_t* cr = getCairoContext(true);
clipRegion(cr);
basegfx::B2DHomMatrix rObjectToDevice;
for (auto const & rPolygon : rPolyPolygon)
AddPolygonToPath(cr, rPolygon, rObjectToDevice, !getAntiAlias(), false);
cairo_pattern_t* pattern;
pattern = cairo_pattern_create_linear(rGradient.maPoint1.getX(), rGradient.maPoint1.getY(), rGradient.maPoint2.getX(), rGradient.maPoint2.getY());
for (SalGradientStop const & rStop : rGradient.maStops)
{
double r = rStop.maColor.GetRed() / 255.0;
double g = rStop.maColor.GetGreen() / 255.0;
double b = rStop.maColor.GetBlue() / 255.0;
double a = rStop.maColor.GetAlpha() / 255.0;
double offset = rStop.mfOffset;
cairo_pattern_add_color_stop_rgba(pattern, offset, r, g, b, a);
}
cairo_set_source(cr, pattern);
basegfx::B2DRange extents = getClippedFillDamage(cr);
cairo_fill_preserve(cr);
releaseCairoContext(cr, true, extents);
return true;
}
void SvpSalGraphics::applyColor(cairo_t *cr, Color aColor, double fTransparency)
{
if (cairo_surface_get_content(m_pSurface) == CAIRO_CONTENT_COLOR_ALPHA)
{
cairo_set_source_rgba(cr, aColor.GetRed()/255.0,
aColor.GetGreen()/255.0,
aColor.GetBlue()/255.0,
1.0 - fTransparency);
}
else
{
double fSet = aColor == COL_BLACK ? 1.0 : 0.0;
cairo_set_source_rgba(cr, 1, 1, 1, fSet);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
}
}
void SvpSalGraphics::copyArea( tools::Long nDestX,
tools::Long nDestY,
tools::Long nSrcX,
tools::Long nSrcY,
tools::Long nSrcWidth,
tools::Long nSrcHeight,
bool /*bWindowInvalidate*/ )
{
SalTwoRect aTR(nSrcX, nSrcY, nSrcWidth, nSrcHeight, nDestX, nDestY, nSrcWidth, nSrcHeight);
copyBits(aTR, this);
}
static basegfx::B2DRange renderWithOperator(cairo_t* cr, const SalTwoRect& rTR,
cairo_surface_t* source, cairo_operator_t eOperator = CAIRO_OPERATOR_SOURCE)
{
cairo_rectangle(cr, rTR.mnDestX, rTR.mnDestY, rTR.mnDestWidth, rTR.mnDestHeight);
basegfx::B2DRange extents = getClippedFillDamage(cr);
cairo_clip(cr);
cairo_translate(cr, rTR.mnDestX, rTR.mnDestY);
double fXScale = 1.0f;
double fYScale = 1.0f;
if (rTR.mnSrcWidth != 0 && rTR.mnSrcHeight != 0) {
fXScale = static_cast<double>(rTR.mnDestWidth)/rTR.mnSrcWidth;
fYScale = static_cast<double>(rTR.mnDestHeight)/rTR.mnSrcHeight;
cairo_scale(cr, fXScale, fYScale);
}
cairo_save(cr);
cairo_set_source_surface(cr, source, -rTR.mnSrcX, -rTR.mnSrcY);
if ((fXScale != 1.0 && rTR.mnSrcWidth == 1) || (fYScale != 1.0 && rTR.mnSrcHeight == 1))
{
cairo_pattern_t* sourcepattern = cairo_get_source(cr);
cairo_pattern_set_extend(sourcepattern, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_filter(sourcepattern, CAIRO_FILTER_NEAREST);
}
cairo_set_operator(cr, eOperator);
cairo_paint(cr);
cairo_restore(cr);
return extents;
}
static basegfx::B2DRange renderSource(cairo_t* cr, const SalTwoRect& rTR,
cairo_surface_t* source)
{
return renderWithOperator(cr, rTR, source, CAIRO_OPERATOR_SOURCE);
}
void SvpSalGraphics::copyWithOperator( const SalTwoRect& rTR, cairo_surface_t* source,
cairo_operator_t eOp )
{
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
basegfx::B2DRange extents = renderWithOperator(cr, rTR, source, eOp);
releaseCairoContext(cr, false, extents);
}
void SvpSalGraphics::copySource( const SalTwoRect& rTR, cairo_surface_t* source )
{
copyWithOperator(rTR, source, CAIRO_OPERATOR_SOURCE);
}
void SvpSalGraphics::copyBits( const SalTwoRect& rTR,
SalGraphics* pSrcGraphics )
{
SalTwoRect aTR(rTR);
SvpSalGraphics* pSrc = pSrcGraphics ?
static_cast<SvpSalGraphics*>(pSrcGraphics) : this;
cairo_surface_t* source = pSrc->m_pSurface;
cairo_surface_t *pCopy = nullptr;
if (pSrc == this)
{
//self copy is a problem, so dup source in that case
pCopy = cairo_surface_create_similar(source,
cairo_surface_get_content(m_pSurface),
aTR.mnSrcWidth * m_fScale,
aTR.mnSrcHeight * m_fScale);
dl_cairo_surface_set_device_scale(pCopy, m_fScale, m_fScale);
cairo_t* cr = cairo_create(pCopy);
cairo_set_source_surface(cr, source, -aTR.mnSrcX, -aTR.mnSrcY);
cairo_rectangle(cr, 0, 0, aTR.mnSrcWidth, aTR.mnSrcHeight);
cairo_fill(cr);
cairo_destroy(cr);
source = pCopy;
aTR.mnSrcX = 0;
aTR.mnSrcY = 0;
}
copySource(aTR, source);
if (pCopy)
cairo_surface_destroy(pCopy);
}
void SvpSalGraphics::drawBitmap(const SalTwoRect& rTR, const SalBitmap& rSourceBitmap)
{
// MM02 try to access buffered BitmapHelper
std::shared_ptr<BitmapHelper> aSurface;
tryToUseSourceBuffer(rSourceBitmap, aSurface);
cairo_surface_t* source = aSurface->getSurface(
rTR.mnDestWidth,
rTR.mnDestHeight);
if (!source)
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawAlphaBitmap case");
return;
}
copyWithOperator(rTR, source, CAIRO_OPERATOR_OVER);
}
void SvpSalGraphics::drawBitmap(const SalTwoRect& rTR, const BitmapBuffer* pBuffer, cairo_operator_t eOp)
{
cairo_surface_t* source = createCairoSurface( pBuffer );
copyWithOperator(rTR, source, eOp);
cairo_surface_destroy(source);
}
void SvpSalGraphics::drawBitmap( const SalTwoRect& rTR,
const SalBitmap& rSourceBitmap,
const SalBitmap& rTransparentBitmap )
{
drawAlphaBitmap(rTR, rSourceBitmap, rTransparentBitmap);
}
void SvpSalGraphics::drawMask( const SalTwoRect& rTR,
const SalBitmap& rSalBitmap,
Color nMaskColor )
{
/** creates an image from the given rectangle, replacing all black pixels
* with nMaskColor and make all other full transparent */
// MM02 here decided *against* using buffered BitmapHelper
// because the data gets somehow 'unmuliplied'. This may also be
// done just once, but I am not sure if this is safe to do.
// So for now dispense re-using data here.
BitmapHelper aSurface(rSalBitmap, true); // The mask is argb32
if (!aSurface.getSurface())
{
SAL_WARN("vcl.gdi", "unsupported SvpSalGraphics::drawMask case");
return;
}
sal_Int32 nStride;
unsigned char *mask_data = aSurface.getBits(nStride);
vcl::bitmap::lookup_table unpremultiply_table = vcl::bitmap::get_unpremultiply_table();
for (tools::Long y = rTR.mnSrcY ; y < rTR.mnSrcY + rTR.mnSrcHeight; ++y)
{
unsigned char *row = mask_data + (nStride*y);
unsigned char *data = row + (rTR.mnSrcX * 4);
for (tools::Long x = rTR.mnSrcX; x < rTR.mnSrcX + rTR.mnSrcWidth; ++x)
{
sal_uInt8 a = data[SVP_CAIRO_ALPHA];
sal_uInt8 b = unpremultiply_table[a][data[SVP_CAIRO_BLUE]];
sal_uInt8 g = unpremultiply_table[a][data[SVP_CAIRO_GREEN]];
sal_uInt8 r = unpremultiply_table[a][data[SVP_CAIRO_RED]];
if (r == 0 && g == 0 && b == 0)
{
data[0] = nMaskColor.GetBlue();
data[1] = nMaskColor.GetGreen();
data[2] = nMaskColor.GetRed();
data[3] = 0xff;
}
else
{
data[0] = 0;
data[1] = 0;
data[2] = 0;
data[3] = 0;
}
data+=4;
}
}
aSurface.mark_dirty();
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
cairo_rectangle(cr, rTR.mnDestX, rTR.mnDestY, rTR.mnDestWidth, rTR.mnDestHeight);
basegfx::B2DRange extents = getClippedFillDamage(cr);
cairo_clip(cr);
cairo_translate(cr, rTR.mnDestX, rTR.mnDestY);
double fXScale = static_cast<double>(rTR.mnDestWidth)/rTR.mnSrcWidth;
double fYScale = static_cast<double>(rTR.mnDestHeight)/rTR.mnSrcHeight;
cairo_scale(cr, fXScale, fYScale);
cairo_set_source_surface(cr, aSurface.getSurface(), -rTR.mnSrcX, -rTR.mnSrcY);
if ((fXScale != 1.0 && rTR.mnSrcWidth == 1) || (fYScale != 1.0 && rTR.mnSrcHeight == 1))
{
cairo_pattern_t* sourcepattern = cairo_get_source(cr);
cairo_pattern_set_extend(sourcepattern, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_filter(sourcepattern, CAIRO_FILTER_NEAREST);
}
cairo_paint(cr);
releaseCairoContext(cr, false, extents);
}
std::shared_ptr<SalBitmap> SvpSalGraphics::getBitmap( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight )
{
std::shared_ptr<SvpSalBitmap> pBitmap = std::make_shared<SvpSalBitmap>();
BitmapPalette aPal;
if (GetBitCount() == 1)
{
aPal.SetEntryCount(2);
aPal[0] = COL_BLACK;
aPal[1] = COL_WHITE;
}
if (!pBitmap->Create(Size(nWidth, nHeight), GetBitCount(), aPal))
{
SAL_WARN("vcl.gdi", "SvpSalGraphics::getBitmap, cannot create bitmap");
return nullptr;
}
cairo_surface_t* target = SvpSalGraphics::createCairoSurface(pBitmap->GetBuffer());
if (!target)
{
SAL_WARN("vcl.gdi", "SvpSalGraphics::getBitmap, cannot create cairo surface");
return nullptr;
}
cairo_t* cr = cairo_create(target);
SalTwoRect aTR(nX, nY, nWidth, nHeight, 0, 0, nWidth, nHeight);
renderSource(cr, aTR, m_pSurface);
cairo_destroy(cr);
cairo_surface_destroy(target);
Toggle1BitTransparency(*pBitmap->GetBuffer());
return pBitmap;
}
Color SvpSalGraphics::getPixel( tools::Long nX, tools::Long nY )
{
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
cairo_surface_t *target = cairo_surface_create_similar_image(m_pSurface, CAIRO_FORMAT_ARGB32, 1, 1);
#else
cairo_surface_t *target = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 1, 1);
#endif
cairo_t* cr = cairo_create(target);
cairo_rectangle(cr, 0, 0, 1, 1);
cairo_set_source_surface(cr, m_pSurface, -nX, -nY);
cairo_paint(cr);
cairo_destroy(cr);
cairo_surface_flush(target);
vcl::bitmap::lookup_table unpremultiply_table = vcl::bitmap::get_unpremultiply_table();
unsigned char *data = cairo_image_surface_get_data(target);
sal_uInt8 a = data[SVP_CAIRO_ALPHA];
sal_uInt8 b = unpremultiply_table[a][data[SVP_CAIRO_BLUE]];
sal_uInt8 g = unpremultiply_table[a][data[SVP_CAIRO_GREEN]];
sal_uInt8 r = unpremultiply_table[a][data[SVP_CAIRO_RED]];
Color aColor(0xFF - a, r, g, b);
cairo_surface_destroy(target);
return aColor;
}
namespace
{
cairo_pattern_t * create_stipple()
{
static unsigned char data[16] = { 0xFF, 0xFF, 0x00, 0x00,
0xFF, 0xFF, 0x00, 0x00,
0x00, 0x00, 0xFF, 0xFF,
0x00, 0x00, 0xFF, 0xFF };
cairo_surface_t* surface = cairo_image_surface_create_for_data(data, CAIRO_FORMAT_A8, 4, 4, 4);
cairo_pattern_t* pattern = cairo_pattern_create_for_surface(surface);
cairo_surface_destroy(surface);
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
return pattern;
}
}
void SvpSalGraphics::invert(const basegfx::B2DPolygon &rPoly, SalInvert nFlags)
{
cairo_t* cr = getCairoContext(false);
clipRegion(cr);
// To make releaseCairoContext work, use empty extents
basegfx::B2DRange extents;
AddPolygonToPath(
cr,
rPoly,
basegfx::B2DHomMatrix(),
!getAntiAlias(),
false);
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
if (cairo_version() >= CAIRO_VERSION_ENCODE(1, 10, 0))
{
cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
}
else
{
SAL_WARN("vcl.gdi", "SvpSalGraphics::invert, archaic cairo");
}
if (nFlags & SalInvert::TrackFrame)
{
cairo_set_line_width(cr, 2.0);
const double dashLengths[2] = { 4.0, 4.0 };
cairo_set_dash(cr, dashLengths, 2, 0);
extents = getClippedStrokeDamage(cr);
//see tdf#106577 under wayland, some pixel droppings seen, maybe we're
//out by one somewhere, or cairo_stroke_extents is confused by
//dashes/line width
if(!extents.isEmpty())
{
extents.grow(1);
}
cairo_stroke(cr);
}
else
{
extents = getClippedFillDamage(cr);
cairo_clip(cr);
if (nFlags & SalInvert::N50)
{
cairo_pattern_t *pattern = create_stipple();
cairo_surface_t* surface = cairo_surface_create_similar(m_pSurface,
cairo_surface_get_content(m_pSurface),
extents.getWidth() * m_fScale,
extents.getHeight() * m_fScale);
dl_cairo_surface_set_device_scale(surface, m_fScale, m_fScale);
cairo_t* stipple_cr = cairo_create(surface);
cairo_set_source_rgb(stipple_cr, 1.0, 1.0, 1.0);
cairo_mask(stipple_cr, pattern);
cairo_pattern_destroy(pattern);
cairo_destroy(stipple_cr);
cairo_mask_surface(cr, surface, extents.getMinX(), extents.getMinY());
cairo_surface_destroy(surface);
}
else
{
cairo_paint(cr);
}
}
releaseCairoContext(cr, false, extents);
}
void SvpSalGraphics::invert( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight, SalInvert nFlags )
{
basegfx::B2DPolygon aRect = basegfx::utils::createPolygonFromRect(basegfx::B2DRectangle(nX, nY, nX+nWidth, nY+nHeight));
invert(aRect, nFlags);
}
void SvpSalGraphics::invert(sal_uInt32 nPoints, const Point* pPtAry, SalInvert nFlags)
{
basegfx::B2DPolygon aPoly;
aPoly.append(basegfx::B2DPoint(pPtAry->getX(), pPtAry->getY()), nPoints);
for (sal_uInt32 i = 1; i < nPoints; ++i)
aPoly.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].getX(), pPtAry[i].getY()));
aPoly.setClosed(true);
invert(aPoly, nFlags);
}
bool SvpSalGraphics::drawEPS( tools::Long, tools::Long, tools::Long, tools::Long, void*, sal_uInt32 )
{
return false;
}
namespace
{
bool isCairoCompatible(const BitmapBuffer* pBuffer)
{
if (!pBuffer)
return false;
// We use Cairo that supports 24-bit RGB.
#ifdef HAVE_CAIRO_FORMAT_RGB24_888
if (pBuffer->mnBitCount != 32 && pBuffer->mnBitCount != 24 && pBuffer->mnBitCount != 1)
#else
if (pBuffer->mnBitCount != 32 && pBuffer->mnBitCount != 1)
#endif
return false;
cairo_format_t nFormat = getCairoFormat(*pBuffer);
return (cairo_format_stride_for_width(nFormat, pBuffer->mnWidth) == pBuffer->mnScanlineSize);
}
}
cairo_surface_t* SvpSalGraphics::createCairoSurface(const BitmapBuffer *pBuffer)
{
if (!isCairoCompatible(pBuffer))
return nullptr;
cairo_format_t nFormat = getCairoFormat(*pBuffer);
cairo_surface_t *target =
cairo_image_surface_create_for_data(pBuffer->mpBits,
nFormat,
pBuffer->mnWidth, pBuffer->mnHeight,
pBuffer->mnScanlineSize);
if (cairo_surface_status(target) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy(target);
return nullptr;
}
return target;
}
cairo_t* SvpSalGraphics::createTmpCompatibleCairoContext() const
{
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
cairo_surface_t *target = cairo_surface_create_similar_image(m_pSurface,
#else
cairo_surface_t *target = cairo_image_surface_create(
#endif
CAIRO_FORMAT_ARGB32,
m_aFrameSize.getX() * m_fScale,
m_aFrameSize.getY() * m_fScale);
dl_cairo_surface_set_device_scale(target, m_fScale, m_fScale);
return cairo_create(target);
}
cairo_t* SvpSalGraphics::getCairoContext(bool bXorModeAllowed) const
{
cairo_t* cr;
if (m_ePaintMode == PaintMode::Xor && bXorModeAllowed)
cr = createTmpCompatibleCairoContext();
else
cr = cairo_create(m_pSurface);
cairo_set_line_width(cr, 1);
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_set_antialias(cr, getAntiAlias() ? CAIRO_ANTIALIAS_DEFAULT : CAIRO_ANTIALIAS_NONE);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
// ensure no linear transformation and no PathInfo in local cairo_path_t
cairo_identity_matrix(cr);
cairo_new_path(cr);
return cr;
}
cairo_user_data_key_t* SvpSalGraphics::getDamageKey()
{
static cairo_user_data_key_t aDamageKey;
return &aDamageKey;
}
void SvpSalGraphics::releaseCairoContext(cairo_t* cr, bool bXorModeAllowed, const basegfx::B2DRange& rExtents) const
{
const bool bXoring = (m_ePaintMode == PaintMode::Xor && bXorModeAllowed);
if (rExtents.isEmpty())
{
//nothing changed, return early
if (bXoring)
{
cairo_surface_t* surface = cairo_get_target(cr);
cairo_surface_destroy(surface);
}
cairo_destroy(cr);
return;
}
basegfx::B2IRange aIntExtents(basegfx::unotools::b2ISurroundingRangeFromB2DRange(rExtents));
sal_Int32 nExtentsLeft(aIntExtents.getMinX()), nExtentsTop(aIntExtents.getMinY());
sal_Int32 nExtentsRight(aIntExtents.getMaxX()), nExtentsBottom(aIntExtents.getMaxY());
sal_Int32 nWidth = m_aFrameSize.getX();
sal_Int32 nHeight = m_aFrameSize.getY();
nExtentsLeft = std::max<sal_Int32>(nExtentsLeft, 0);
nExtentsTop = std::max<sal_Int32>(nExtentsTop, 0);
nExtentsRight = std::min<sal_Int32>(nExtentsRight, nWidth);
nExtentsBottom = std::min<sal_Int32>(nExtentsBottom, nHeight);
cairo_surface_t* surface = cairo_get_target(cr);
cairo_surface_flush(surface);
//For the most part we avoid the use of XOR these days, but there
//are some edge cases where legacy stuff still supports it, so
//emulate it (slowly) here.
if (bXoring)
{
cairo_surface_t* target_surface = m_pSurface;
if (cairo_surface_get_type(target_surface) != CAIRO_SURFACE_TYPE_IMAGE)
{
//in the unlikely case we can't use m_pSurface directly, copy contents
//to another temp image surface
cairo_t* copycr = createTmpCompatibleCairoContext();
cairo_rectangle(copycr, nExtentsLeft, nExtentsTop,
nExtentsRight - nExtentsLeft,
nExtentsBottom - nExtentsTop);
cairo_set_source_surface(copycr, m_pSurface, 0, 0);
cairo_paint(copycr);
target_surface = cairo_get_target(copycr);
cairo_destroy(copycr);
}
cairo_surface_flush(target_surface);
unsigned char *target_surface_data = cairo_image_surface_get_data(target_surface);
unsigned char *xor_surface_data = cairo_image_surface_get_data(surface);
cairo_format_t nFormat = cairo_image_surface_get_format(target_surface);
assert(nFormat == CAIRO_FORMAT_ARGB32 && "need to implement CAIRO_FORMAT_A1 after all here");
sal_Int32 nStride = cairo_format_stride_for_width(nFormat, nWidth * m_fScale);
sal_Int32 nUnscaledExtentsLeft = nExtentsLeft * m_fScale;
sal_Int32 nUnscaledExtentsRight = nExtentsRight * m_fScale;
sal_Int32 nUnscaledExtentsTop = nExtentsTop * m_fScale;
sal_Int32 nUnscaledExtentsBottom = nExtentsBottom * m_fScale;
vcl::bitmap::lookup_table unpremultiply_table = vcl::bitmap::get_unpremultiply_table();
vcl::bitmap::lookup_table premultiply_table = vcl::bitmap::get_premultiply_table();
for (sal_Int32 y = nUnscaledExtentsTop; y < nUnscaledExtentsBottom; ++y)
{
unsigned char *true_row = target_surface_data + (nStride*y);
unsigned char *xor_row = xor_surface_data + (nStride*y);
unsigned char *true_data = true_row + (nUnscaledExtentsLeft * 4);
unsigned char *xor_data = xor_row + (nUnscaledExtentsLeft * 4);
for (sal_Int32 x = nUnscaledExtentsLeft; x < nUnscaledExtentsRight; ++x)
{
sal_uInt8 a = true_data[SVP_CAIRO_ALPHA];
sal_uInt8 xor_a = xor_data[SVP_CAIRO_ALPHA];
sal_uInt8 b = unpremultiply_table[a][true_data[SVP_CAIRO_BLUE]] ^
unpremultiply_table[xor_a][xor_data[SVP_CAIRO_BLUE]];
sal_uInt8 g = unpremultiply_table[a][true_data[SVP_CAIRO_GREEN]] ^
unpremultiply_table[xor_a][xor_data[SVP_CAIRO_GREEN]];
sal_uInt8 r = unpremultiply_table[a][true_data[SVP_CAIRO_RED]] ^
unpremultiply_table[xor_a][xor_data[SVP_CAIRO_RED]];
true_data[SVP_CAIRO_BLUE] = premultiply_table[a][b];
true_data[SVP_CAIRO_GREEN] = premultiply_table[a][g];
true_data[SVP_CAIRO_RED] = premultiply_table[a][r];
true_data+=4;
xor_data+=4;
}
}
cairo_surface_mark_dirty(target_surface);
if (target_surface != m_pSurface)
{
cairo_t* copycr = cairo_create(m_pSurface);
//unlikely case we couldn't use m_pSurface directly, copy contents
//back from image surface
cairo_rectangle(copycr, nExtentsLeft, nExtentsTop,
nExtentsRight - nExtentsLeft,
nExtentsBottom - nExtentsTop);
cairo_set_source_surface(copycr, target_surface, 0, 0);
cairo_paint(copycr);
cairo_destroy(copycr);
cairo_surface_destroy(target_surface);
}
cairo_surface_destroy(surface);
}
cairo_destroy(cr); // unref
DamageHandler* pDamage = static_cast<DamageHandler*>(cairo_surface_get_user_data(m_pSurface, getDamageKey()));
if (pDamage)
{
pDamage->damaged(pDamage->handle, nExtentsLeft, nExtentsTop,
nExtentsRight - nExtentsLeft,
nExtentsBottom - nExtentsTop);
}
}
#if ENABLE_CAIRO_CANVAS
bool SvpSalGraphics::SupportsCairo() const
{
return false;
}
cairo::SurfaceSharedPtr SvpSalGraphics::CreateSurface(const cairo::CairoSurfaceSharedPtr& /*rSurface*/) const
{
return cairo::SurfaceSharedPtr();
}
cairo::SurfaceSharedPtr SvpSalGraphics::CreateSurface(const OutputDevice& /*rRefDevice*/, int /*x*/, int /*y*/, int /*width*/, int /*height*/) const
{
return cairo::SurfaceSharedPtr();
}
cairo::SurfaceSharedPtr SvpSalGraphics::CreateBitmapSurface(const OutputDevice& /*rRefDevice*/, const BitmapSystemData& /*rData*/, const Size& /*rSize*/) const
{
return cairo::SurfaceSharedPtr();
}
css::uno::Any SvpSalGraphics::GetNativeSurfaceHandle(cairo::SurfaceSharedPtr& /*rSurface*/, const basegfx::B2ISize& /*rSize*/) const
{
return css::uno::Any();
}
#endif // ENABLE_CAIRO_CANVAS
SystemGraphicsData SvpSalGraphics::GetGraphicsData() const
{
return SystemGraphicsData();
}
bool SvpSalGraphics::supportsOperation(OutDevSupportType eType) const
{
switch (eType)
{
case OutDevSupportType::TransparentRect:
case OutDevSupportType::B2DDraw:
return true;
}
return false;
}
void dl_cairo_surface_set_device_scale(cairo_surface_t *surface, double x_scale, double y_scale)
{
#ifdef ANDROID
cairo_surface_set_device_scale(surface, x_scale, y_scale);
#else
static auto func = reinterpret_cast<void(*)(cairo_surface_t*, double, double)>(
dlsym(nullptr, "cairo_surface_set_device_scale"));
if (func)
func(surface, x_scale, y_scale);
#endif
}
void dl_cairo_surface_get_device_scale(cairo_surface_t *surface, double* x_scale, double* y_scale)
{
#ifdef ANDROID
cairo_surface_get_device_scale(surface, x_scale, y_scale);
#else
static auto func = reinterpret_cast<void(*)(cairo_surface_t*, double*, double*)>(
dlsym(nullptr, "cairo_surface_get_device_scale"));
if (func)
func(surface, x_scale, y_scale);
else
{
if (x_scale)
*x_scale = 1.0;
if (y_scale)
*y_scale = 1.0;
}
#endif
}
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