/* -*- 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 <sal/config.h>
#include <algorithm>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/attribute/fontattribute.hxx>
#include <drawinglayer/primitive2d/textlayoutdevice.hxx>
#include <comphelper/processfactory.hxx>
#include <comphelper/unique_disposing_ptr.hxx>
#include <osl/diagnose.h>
#include <tools/gen.hxx>
#include <vcl/canvastools.hxx>
#include <vcl/kernarray.hxx>
#include <vcl/timer.hxx>
#include <vcl/virdev.hxx>
#include <vcl/font.hxx>
#include <vcl/metric.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <vcl/svapp.hxx>
#include <vcl/vcllayout.hxx>
#include <vcl/glyphitemcache.hxx>
namespace drawinglayer::primitive2d
{
namespace
{
class ImpTimedRefDev;
// VDev RevDevice provider
//the scoped_timed_RefDev owns an ImpTimeRefDev and releases it on dtor
//or disposing of the default XComponentContext which causes the underlying
//OutputDevice to get released
//The ImpTimerRefDev itself, if the timeout ever gets hit, will call
//reset on the scoped_timed_RefDev to release the ImpTimerRefDev early
//if it's unused for a few minutes
class scoped_timed_RefDev : public comphelper::unique_disposing_ptr<ImpTimedRefDev>
{
public:
scoped_timed_RefDev()
: comphelper::unique_disposing_ptr<ImpTimedRefDev>(
(css::uno::Reference<css::lang::XComponent>(
::comphelper::getProcessComponentContext(), css::uno::UNO_QUERY_THROW)))
{
}
};
class the_scoped_timed_RefDev : public rtl::Static<scoped_timed_RefDev, the_scoped_timed_RefDev>
{
};
class ImpTimedRefDev : public Timer
{
scoped_timed_RefDev& mrOwnerOfMe;
VclPtr<VirtualDevice> mpVirDev;
sal_uInt32 mnUseCount;
public:
explicit ImpTimedRefDev(scoped_timed_RefDev& rOwnerofMe);
virtual ~ImpTimedRefDev() override;
virtual void Invoke() override;
VirtualDevice& acquireVirtualDevice();
void releaseVirtualDevice();
};
ImpTimedRefDev::ImpTimedRefDev(scoped_timed_RefDev& rOwnerOfMe)
: Timer("drawinglayer ImpTimedRefDev destroy mpVirDev")
, mrOwnerOfMe(rOwnerOfMe)
, mpVirDev(nullptr)
, mnUseCount(0)
{
SetTimeout(3L * 60L * 1000L); // three minutes
Start();
}
ImpTimedRefDev::~ImpTimedRefDev()
{
OSL_ENSURE(0 == mnUseCount, "destruction of a still used ImpTimedRefDev (!)");
const SolarMutexGuard aSolarGuard;
mpVirDev.disposeAndClear();
}
void ImpTimedRefDev::Invoke()
{
// for obvious reasons, do not call anything after this
mrOwnerOfMe.reset();
}
VirtualDevice& ImpTimedRefDev::acquireVirtualDevice()
{
if (!mpVirDev)
{
mpVirDev = VclPtr<VirtualDevice>::Create();
mpVirDev->SetReferenceDevice(VirtualDevice::RefDevMode::MSO1);
}
if (!mnUseCount)
{
Stop();
}
mnUseCount++;
return *mpVirDev;
}
void ImpTimedRefDev::releaseVirtualDevice()
{
OSL_ENSURE(mnUseCount, "mismatch call number to releaseVirtualDevice() (!)");
mnUseCount--;
if (!mnUseCount)
{
Start();
}
}
VirtualDevice& acquireGlobalVirtualDevice()
{
scoped_timed_RefDev& rStdRefDevice = the_scoped_timed_RefDev::get();
if (!rStdRefDevice)
rStdRefDevice.reset(new ImpTimedRefDev(rStdRefDevice));
return rStdRefDevice->acquireVirtualDevice();
}
void releaseGlobalVirtualDevice()
{
scoped_timed_RefDev& rStdRefDevice = the_scoped_timed_RefDev::get();
OSL_ENSURE(rStdRefDevice,
"releaseGlobalVirtualDevice() without prior acquireGlobalVirtualDevice() call(!)");
rStdRefDevice->releaseVirtualDevice();
}
} // end of anonymous namespace
TextLayouterDevice::TextLayouterDevice()
: mrDevice(acquireGlobalVirtualDevice())
{
}
TextLayouterDevice::~TextLayouterDevice() COVERITY_NOEXCEPT_FALSE { releaseGlobalVirtualDevice(); }
void TextLayouterDevice::setFont(const vcl::Font& rFont)
{
mrDevice.SetFont(rFont);
mnFontScalingFixX = 1.0;
mnFontScalingFixY = 1.0;
}
void TextLayouterDevice::setFontAttribute(const attribute::FontAttribute& rFontAttribute,
double fFontScaleX, double fFontScaleY,
const css::lang::Locale& rLocale)
{
vcl::Font aFont
= getVclFontFromFontAttribute(rFontAttribute, fFontScaleX, fFontScaleY, 0.0, rLocale);
setFont(aFont);
Size aFontSize = aFont.GetFontSize();
if (aFontSize.Height())
{
mnFontScalingFixY = fFontScaleY / aFontSize.Height();
// aFontSize.Width() is 0 for uninformly scaled fonts: see getVclFontFromFontAttribute
mnFontScalingFixX
= fFontScaleX / (aFontSize.Width() ? aFontSize.Width() : aFontSize.Height());
}
else
{
mnFontScalingFixX = mnFontScalingFixY = 1.0;
}
}
void TextLayouterDevice::setLayoutMode(vcl::text::ComplexTextLayoutFlags nTextLayoutMode)
{
mrDevice.SetLayoutMode(nTextLayoutMode);
}
vcl::text::ComplexTextLayoutFlags TextLayouterDevice::getLayoutMode() const
{
return mrDevice.GetLayoutMode();
}
void TextLayouterDevice::setTextColor(const basegfx::BColor& rColor)
{
mrDevice.SetTextColor(Color(rColor));
}
double TextLayouterDevice::getOverlineOffset() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
double fRet = (aMetric.GetInternalLeading() / 2.0) - aMetric.GetAscent();
return fRet * mnFontScalingFixY;
}
double TextLayouterDevice::getUnderlineOffset() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
double fRet = aMetric.GetDescent() / 2.0;
return fRet * mnFontScalingFixY;
}
double TextLayouterDevice::getStrikeoutOffset() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
double fRet = (aMetric.GetAscent() - aMetric.GetInternalLeading()) / 3.0;
return fRet * mnFontScalingFixY;
}
double TextLayouterDevice::getOverlineHeight() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
double fRet = aMetric.GetInternalLeading() / 2.5;
return fRet * mnFontScalingFixY;
}
double TextLayouterDevice::getUnderlineHeight() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
double fRet = aMetric.GetDescent() / 4.0;
return fRet * mnFontScalingFixY;
}
double TextLayouterDevice::getTextHeight() const
{
return mrDevice.GetTextHeightDouble() * mnFontScalingFixY;
}
double TextLayouterDevice::getTextWidth(const OUString& rText, sal_uInt32 nIndex,
sal_uInt32 nLength) const
{
return mrDevice.GetTextWidthDouble(rText, nIndex, nLength) * mnFontScalingFixX;
}
void TextLayouterDevice::getTextOutlines(basegfx::B2DPolyPolygonVector& rB2DPolyPolyVector,
const OUString& rText, sal_uInt32 nIndex,
sal_uInt32 nLength, const std::vector<double>& rDXArray,
const std::vector<sal_Bool>& rKashidaArray) const
{
const sal_uInt32 nDXArrayCount(rDXArray.size());
sal_uInt32 nTextLength(nLength);
const sal_uInt32 nStringLength(rText.getLength());
if (nTextLength + nIndex > nStringLength)
{
nTextLength = nStringLength - nIndex;
}
if (nDXArrayCount)
{
OSL_ENSURE(nDXArrayCount == nTextLength,
"DXArray size does not correspond to text portion size (!)");
mrDevice.GetTextOutlines(rB2DPolyPolyVector, rText, nIndex, nIndex, nLength, 0, rDXArray,
rKashidaArray);
}
else
{
mrDevice.GetTextOutlines(rB2DPolyPolyVector, rText, nIndex, nIndex, nLength);
}
if (!rtl_math_approxEqual(mnFontScalingFixY, 1.0)
|| !rtl_math_approxEqual(mnFontScalingFixX, 1.0))
{
auto scale = basegfx::utils::createScaleB2DHomMatrix(mnFontScalingFixX, mnFontScalingFixY);
for (auto& poly : rB2DPolyPolyVector)
poly.transform(scale);
}
}
basegfx::B2DRange TextLayouterDevice::getTextBoundRect(const OUString& rText, sal_uInt32 nIndex,
sal_uInt32 nLength) const
{
sal_uInt32 nTextLength(nLength);
const sal_uInt32 nStringLength(rText.getLength());
if (nTextLength + nIndex > nStringLength)
{
nTextLength = nStringLength - nIndex;
}
if (nTextLength)
{
basegfx::B2DRange aRect;
mrDevice.GetTextBoundRect(aRect, rText, nIndex, nIndex, nLength);
if (!rtl_math_approxEqual(mnFontScalingFixY, 1.0)
|| !rtl_math_approxEqual(mnFontScalingFixX, 1.0))
{
aRect.transform(
basegfx::utils::createScaleB2DHomMatrix(mnFontScalingFixX, mnFontScalingFixY));
}
return aRect;
}
return basegfx::B2DRange();
}
double TextLayouterDevice::getFontAscent() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
return aMetric.GetAscent() * mnFontScalingFixY;
}
double TextLayouterDevice::getFontDescent() const
{
const ::FontMetric aMetric = mrDevice.GetFontMetric();
return aMetric.GetDescent() * mnFontScalingFixY;
}
void TextLayouterDevice::addTextRectActions(const ::tools::Rectangle& rRectangle,
const OUString& rText, DrawTextFlags nStyle,
GDIMetaFile& rGDIMetaFile) const
{
mrDevice.AddTextRectActions(rRectangle, rText, nStyle, rGDIMetaFile);
}
std::vector<double> TextLayouterDevice::getTextArray(const OUString& rText, sal_uInt32 nIndex,
sal_uInt32 nLength, bool bCaret) const
{
std::vector<double> aRetval;
sal_uInt32 nTextLength(nLength);
const sal_uInt32 nStringLength(rText.getLength());
if (nTextLength + nIndex > nStringLength)
{
nTextLength = nStringLength - nIndex;
}
if (nTextLength)
{
KernArray aArray;
mrDevice.GetTextArray(rText, &aArray, nIndex, nTextLength, bCaret);
aRetval.reserve(aArray.size());
for (size_t i = 0, nEnd = aArray.size(); i < nEnd; ++i)
aRetval.push_back(aArray[i] * mnFontScalingFixX);
}
return aRetval;
}
std::unique_ptr<SalLayout>
TextLayouterDevice::getSalLayout(const OUString& rText, sal_uInt32 nIndex, sal_uInt32 nLength,
const basegfx::B2DPoint& rStartPoint, const KernArray& rDXArray,
std::span<const sal_Bool> pKashidaAry) const
{
const SalLayoutGlyphs* pGlyphs(
SalLayoutGlyphsCache::self()->GetLayoutGlyphs(&mrDevice, rText, nIndex, nLength));
const Point aStartPoint(basegfx::fround<tools::Long>(rStartPoint.getX()),
basegfx::fround<tools::Long>(rStartPoint.getY()));
return mrDevice.ImplLayout(rText, nIndex, nLength, aStartPoint, 0, rDXArray, pKashidaAry,
SalLayoutFlags::NONE, nullptr, pGlyphs);
}
void TextLayouterDevice::createEmphasisMarks(
SalLayout& rSalLayout, TextEmphasisMark aTextEmphasisMark, bool bAbove,
const std::function<void(const basegfx::B2DPoint&, const basegfx::B2DPolyPolygon&, bool,
const tools::Rectangle&, const tools::Rectangle&)>& rCallback) const
{
FontEmphasisMark nEmphasisMark(FontEmphasisMark::NONE);
double fEmphasisHeight(getTextHeight() * (250.0 / 1000.0));
switch (aTextEmphasisMark)
{
case TEXT_FONT_EMPHASIS_MARK_DOT:
nEmphasisMark = FontEmphasisMark::Dot;
break;
case TEXT_FONT_EMPHASIS_MARK_CIRCLE:
nEmphasisMark = FontEmphasisMark::Circle;
break;
case TEXT_FONT_EMPHASIS_MARK_DISC:
nEmphasisMark = FontEmphasisMark::Disc;
break;
case TEXT_FONT_EMPHASIS_MARK_ACCENT:
nEmphasisMark = FontEmphasisMark::Accent;
break;
default:
break;
}
if (bAbove)
nEmphasisMark |= FontEmphasisMark::PosAbove;
else
nEmphasisMark |= FontEmphasisMark::PosBelow;
mrDevice.createEmphasisMarks(nEmphasisMark, static_cast<tools::Long>(fEmphasisHeight),
rSalLayout, rCallback);
}
// helper methods for vcl font handling
vcl::Font getVclFontFromFontAttribute(const attribute::FontAttribute& rFontAttribute,
double fFontScaleX, double fFontScaleY, double fFontRotation,
const css::lang::Locale& rLocale)
{
// detect FontScaling
const sal_uInt32 nHeight(basegfx::fround(fabs(fFontScaleY)));
const sal_uInt32 nWidth(basegfx::fround(fabs(fFontScaleX)));
const bool bFontIsScaled(nHeight != nWidth);
#ifdef _WIN32
// for WIN32 systems, start with creating an unscaled font. If FontScaling
// is wanted, that width needs to be adapted using FontMetric again to get a
// width of the unscaled font
vcl::Font aRetval(rFontAttribute.getFamilyName(), rFontAttribute.getStyleName(),
Size(0, nHeight));
#else
// for non-WIN32 systems things are easier since these accept a Font creation
// with initially nWidth != nHeight for FontScaling. Despite that, use zero for
// FontWidth when no scaling is used to explicitly have that zero when e.g. the
// Font would be recorded in a MetaFile (The MetaFile FontAction WILL record a
// set FontWidth; import that in a WIN32 system, and trouble is there)
vcl::Font aRetval(rFontAttribute.getFamilyName(), rFontAttribute.getStyleName(),
Size(bFontIsScaled ? std::max<sal_uInt32>(nWidth, 1) : 0, nHeight));
#endif
// define various other FontAttribute
aRetval.SetAlignment(ALIGN_BASELINE);
aRetval.SetCharSet(rFontAttribute.getSymbol() ? RTL_TEXTENCODING_SYMBOL
: RTL_TEXTENCODING_UNICODE);
aRetval.SetVertical(rFontAttribute.getVertical());
aRetval.SetWeight(static_cast<FontWeight>(rFontAttribute.getWeight()));
aRetval.SetItalic(rFontAttribute.getItalic() ? ITALIC_NORMAL : ITALIC_NONE);
aRetval.SetOutline(rFontAttribute.getOutline());
aRetval.SetPitch(rFontAttribute.getMonospaced() ? PITCH_FIXED : PITCH_VARIABLE);
aRetval.SetLanguage(LanguageTag::convertToLanguageType(rLocale, false));
#ifdef _WIN32
// for WIN32 systems, correct the FontWidth if FontScaling is used
if (bFontIsScaled && nHeight > 0)
{
const FontMetric aUnscaledFontMetric(
Application::GetDefaultDevice()->GetFontMetric(aRetval));
if (aUnscaledFontMetric.GetAverageFontWidth() > 0)
{
const double fScaleFactor(static_cast<double>(nWidth) / static_cast<double>(nHeight));
const sal_uInt32 nScaledWidth(basegfx::fround(
static_cast<double>(aUnscaledFontMetric.GetAverageFontWidth()) * fScaleFactor));
aRetval.SetAverageFontWidth(nScaledWidth);
}
}
#endif
// handle FontRotation (if defined)
if (!basegfx::fTools::equalZero(fFontRotation))
{
int aRotate10th(-basegfx::rad2deg<10>(fFontRotation));
aRetval.SetOrientation(Degree10(aRotate10th % 3600));
}
return aRetval;
}
attribute::FontAttribute getFontAttributeFromVclFont(basegfx::B2DVector& o_rSize,
const vcl::Font& rFont, bool bRTL,
bool bBiDiStrong)
{
const attribute::FontAttribute aRetval(
rFont.GetFamilyName(), rFont.GetStyleName(), static_cast<sal_uInt16>(rFont.GetWeight()),
RTL_TEXTENCODING_SYMBOL == rFont.GetCharSet(), rFont.IsVertical(),
ITALIC_NONE != rFont.GetItalic(), PITCH_FIXED == rFont.GetPitch(), rFont.IsOutline(), bRTL,
bBiDiStrong);
// TODO: eKerning
// set FontHeight and init to no FontScaling
o_rSize.setY(std::max<tools::Long>(rFont.GetFontSize().getHeight(), 0));
o_rSize.setX(o_rSize.getY());
#ifdef _WIN32
// for WIN32 systems, the FontScaling at the Font is detected by
// checking that FontWidth != 0. When FontScaling is used, WIN32
// needs to do extra stuff to detect the correct width (since it's
// zero and not equal the font height) and its relationship to
// the height
if (rFont.GetFontSize().getWidth() > 0)
{
vcl::Font aUnscaledFont(rFont);
aUnscaledFont.SetAverageFontWidth(0);
const FontMetric aUnscaledFontMetric(
Application::GetDefaultDevice()->GetFontMetric(aUnscaledFont));
if (aUnscaledFontMetric.GetAverageFontWidth() > 0)
{
const double fScaleFactor(
static_cast<double>(rFont.GetFontSize().getWidth())
/ static_cast<double>(aUnscaledFontMetric.GetAverageFontWidth()));
o_rSize.setX(fScaleFactor * o_rSize.getY());
}
}
#else
// For non-WIN32 systems the detection is the same, but the value
// is easier achieved since width == height is interpreted as no
// scaling. Ergo, Width == 0 means width == height, and width != 0
// means the scaling is in the direct relation of width to height
if (rFont.GetFontSize().getWidth() > 0)
{
o_rSize.setX(static_cast<double>(rFont.GetFontSize().getWidth()));
}
#endif
return aRetval;
}
} // end of namespace
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V1053 Calling the 'Start' virtual function in the constructor may lead to unexpected result at runtime.