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Diffstat (limited to 'vcl/qt5/QtGraphics_Text.cxx')
| -rw-r--r-- | vcl/qt5/QtGraphics_Text.cxx | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/vcl/qt5/QtGraphics_Text.cxx b/vcl/qt5/QtGraphics_Text.cxx new file mode 100644 index 000000000..940578c5d --- /dev/null +++ b/vcl/qt5/QtGraphics_Text.cxx @@ -0,0 +1,378 @@ +/* -*- 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 <QtGraphics.hxx> +#include <QtFontFace.hxx> +#include <QtFont.hxx> +#include <QtPainter.hxx> + +#include <fontsubset.hxx> +#include <vcl/fontcharmap.hxx> +#include <unx/geninst.h> +#include <unx/fontmanager.hxx> +#include <unx/glyphcache.hxx> +#include <unx/genpspgraphics.h> + +#include <sallayout.hxx> +#include <font/PhysicalFontCollection.hxx> + +#include <QtGui/QGlyphRun> +#include <QtGui/QFontDatabase> +#include <QtGui/QRawFont> +#include <QtCore/QStringList> + +void QtGraphics::SetTextColor(Color nColor) { m_aTextColor = nColor; } + +void QtGraphics::SetFont(LogicalFontInstance* pReqFont, int nFallbackLevel) +{ + // release the text styles + for (int i = nFallbackLevel; i < MAX_FALLBACK; ++i) + { + if (!m_pTextStyle[i]) + break; + m_pTextStyle[i].clear(); + } + + if (!pReqFont) + return; + + m_pTextStyle[nFallbackLevel] = static_cast<QtFont*>(pReqFont); +} + +void QtGraphics::GetFontMetric(ImplFontMetricDataRef& rFMD, int nFallbackLevel) +{ + QRawFont aRawFont(QRawFont::fromFont(*m_pTextStyle[nFallbackLevel])); + QtFontFace::fillAttributesFromQFont(*m_pTextStyle[nFallbackLevel], *rFMD); + + rFMD->ImplCalcLineSpacing(m_pTextStyle[nFallbackLevel].get()); + rFMD->ImplInitBaselines(m_pTextStyle[nFallbackLevel].get()); + + rFMD->SetSlant(0); + rFMD->SetWidth(aRawFont.averageCharWidth()); + + rFMD->SetMinKashida(m_pTextStyle[nFallbackLevel]->GetKashidaWidth()); +} + +FontCharMapRef QtGraphics::GetFontCharMap() const +{ + if (!m_pTextStyle[0]) + return FontCharMapRef(new FontCharMap()); + return m_pTextStyle[0]->GetFontFace()->GetFontCharMap(); +} + +bool QtGraphics::GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const +{ + if (!m_pTextStyle[0]) + return false; + return m_pTextStyle[0]->GetFontFace()->GetFontCapabilities(rFontCapabilities); +} + +void QtGraphics::GetDevFontList(vcl::font::PhysicalFontCollection* pPFC) +{ + static const bool bUseFontconfig = (nullptr == getenv("SAL_VCL_QT5_NO_FONTCONFIG")); + + if (pPFC->Count()) + return; + + FreetypeManager& rFontManager = FreetypeManager::get(); + psp::PrintFontManager& rMgr = psp::PrintFontManager::get(); + ::std::vector<psp::fontID> aList; + psp::FastPrintFontInfo aInfo; + + rMgr.getFontList(aList); + for (auto const& elem : aList) + { + if (!rMgr.getFontFastInfo(elem, aInfo)) + continue; + + // normalize face number to the FreetypeManager + int nFaceNum = rMgr.getFontFaceNumber(aInfo.m_nID); + int nVariantNum = rMgr.getFontFaceVariation(aInfo.m_nID); + + // inform FreetypeManager about this font provided by the PsPrint subsystem + FontAttributes aDFA = GenPspGraphics::Info2FontAttributes(aInfo); + aDFA.IncreaseQualityBy(4096); + const OString& rFileName = rMgr.getFontFileSysPath(aInfo.m_nID); + rFontManager.AddFontFile(rFileName, nFaceNum, nVariantNum, aInfo.m_nID, aDFA); + } + + if (bUseFontconfig) + SalGenericInstance::RegisterFontSubstitutors(pPFC); + +#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) + for (auto& family : QFontDatabase::families()) + for (auto& style : QFontDatabase::styles(family)) + pPFC->Add(QtFontFace::fromQFontDatabase(family, style)); +#else + QFontDatabase aFDB; + for (auto& family : aFDB.families()) + for (auto& style : aFDB.styles(family)) + pPFC->Add(QtFontFace::fromQFontDatabase(family, style)); +#endif +} + +void QtGraphics::ClearDevFontCache() {} + +bool QtGraphics::AddTempDevFont(vcl::font::PhysicalFontCollection*, const OUString& /*rFileURL*/, + const OUString& /*rFontName*/) +{ + return false; +} + +namespace +{ +class QtTrueTypeFont : public vcl::AbstractTrueTypeFont +{ + const QRawFont& m_aRawFont; + mutable QByteArray m_aFontTable[vcl::NUM_TAGS]; + +public: + QtTrueTypeFont(const QtFontFace& aFontFace, const QRawFont& aRawFont); + + bool hasTable(sal_uInt32 ord) const override; + const sal_uInt8* table(sal_uInt32 ord, sal_uInt32& size) const override; +}; + +QtTrueTypeFont::QtTrueTypeFont(const QtFontFace& aFontFace, const QRawFont& aRawFont) + : vcl::AbstractTrueTypeFont(nullptr, aFontFace.GetFontCharMap()) + , m_aRawFont(aRawFont) +{ + indexGlyphData(); +} + +const char* vclFontTableAsChar(sal_uInt32 ord) +{ + switch (ord) + { + case vcl::O_maxp: + return "maxp"; + case vcl::O_glyf: + return "glyf"; + case vcl::O_head: + return "head"; + case vcl::O_loca: + return "loca"; + case vcl::O_name: + return "name"; + case vcl::O_hhea: + return "hhea"; + case vcl::O_hmtx: + return "hmtx"; + case vcl::O_cmap: + return "cmap"; + case vcl::O_vhea: + return "vhea"; + case vcl::O_vmtx: + return "vmtx"; + case vcl::O_OS2: + return "OS/2"; + case vcl::O_post: + return "post"; + case vcl::O_cvt: + return "cvt "; + case vcl::O_prep: + return "prep"; + case vcl::O_fpgm: + return "fpgm"; + case vcl::O_gsub: + return "gsub"; + case vcl::O_CFF: + return "CFF "; + default: + return nullptr; + } +} + +bool QtTrueTypeFont::hasTable(sal_uInt32 ord) const +{ + const char* table_char = vclFontTableAsChar(ord); + if (!table_char) + return false; + if (m_aFontTable[ord].isEmpty()) + m_aFontTable[ord] = m_aRawFont.fontTable(table_char); + return !m_aFontTable[ord].isEmpty(); +} + +const sal_uInt8* QtTrueTypeFont::table(sal_uInt32 ord, sal_uInt32& size) const +{ + const char* table_char = vclFontTableAsChar(ord); + if (!table_char) + return nullptr; + if (m_aFontTable[ord].isEmpty()) + m_aFontTable[ord] = m_aRawFont.fontTable(table_char); + size = m_aFontTable[ord].size(); + return reinterpret_cast<const sal_uInt8*>(m_aFontTable[ord].data()); +} +} + +bool QtGraphics::CreateFontSubset(const OUString& rToFile, + const vcl::font::PhysicalFontFace* pFontFace, + const sal_GlyphId* pGlyphIds, const sal_uInt8* pEncoding, + sal_Int32* pGlyphWidths, int nGlyphCount, FontSubsetInfo& rInfo) +{ + OUString aSysPath; + if (osl_File_E_None != osl_getSystemPathFromFileURL(rToFile.pData, &aSysPath.pData)) + return false; + + // get the raw-bytes from the font to be subset + const QtFontFace* pQtFontFace = static_cast<const QtFontFace*>(pFontFace); + const QFont aFont = pQtFontFace->CreateFont(); + const QRawFont aRawFont(QRawFont::fromFont(aFont)); + const OString aToFile(OUStringToOString(aSysPath, osl_getThreadTextEncoding())); + + // handle CFF-subsetting + QByteArray aCFFtable = aRawFont.fontTable("CFF "); + if (!aCFFtable.isEmpty()) + return SalGraphics::CreateCFFfontSubset( + reinterpret_cast<const sal_uInt8*>(aCFFtable.data()), aCFFtable.size(), aToFile, + pGlyphIds, pEncoding, pGlyphWidths, nGlyphCount, rInfo); + + // fill details about the subsetted font + rInfo.m_nFontType = FontType::SFNT_TTF; + rInfo.m_aPSName = toOUString(aRawFont.familyName()); + rInfo.m_nCapHeight = aRawFont.capHeight(); + rInfo.m_nAscent = aRawFont.ascent(); + rInfo.m_nDescent = aRawFont.descent(); + + QtTrueTypeFont aTTF(*pQtFontFace, aRawFont); + int nXmin, nYmin, nXmax, nYmax; + sal_uInt16 nMacStyleFlags; + if (GetTTGlobalFontHeadInfo(&aTTF, nXmin, nYmin, nXmax, nYmax, nMacStyleFlags)) + rInfo.m_aFontBBox = tools::Rectangle(Point(nXmin, nYmin), Point(nXmax, nYmax)); + + return SalGraphics::CreateTTFfontSubset(aTTF, aToFile, false /* use FontSelectPattern? */, + pGlyphIds, pEncoding, pGlyphWidths, nGlyphCount); +} + +const void* QtGraphics::GetEmbedFontData(const vcl::font::PhysicalFontFace*, + tools::Long* /*pDataLen*/) +{ + return nullptr; +} + +void QtGraphics::FreeEmbedFontData(const void* /*pData*/, tools::Long /*nDataLen*/) {} + +void QtGraphics::GetGlyphWidths(const vcl::font::PhysicalFontFace* pFontFace, bool bVertical, + std::vector<sal_Int32>& rWidths, Ucs2UIntMap& rUnicodeEnc) +{ + const QtFontFace* pQtFontFace = static_cast<const QtFontFace*>(pFontFace); + const QRawFont aRawFont(QRawFont::fromFont(pQtFontFace->CreateFont())); + QtTrueTypeFont aTTF(*pQtFontFace, aRawFont); + SalGraphics::GetGlyphWidths(aTTF, *pFontFace, bVertical, rWidths, rUnicodeEnc); +} + +namespace +{ +class QtCommonSalLayout : public GenericSalLayout +{ +public: + QtCommonSalLayout(LogicalFontInstance& rLFI) + : GenericSalLayout(rLFI) + { + } + + void SetOrientation(Degree10 nOrientation) { mnOrientation = nOrientation; } +}; +} + +std::unique_ptr<GenericSalLayout> QtGraphics::GetTextLayout(int nFallbackLevel) +{ + assert(m_pTextStyle[nFallbackLevel]); + if (!m_pTextStyle[nFallbackLevel]) + return nullptr; + return std::make_unique<QtCommonSalLayout>(*m_pTextStyle[nFallbackLevel]); +} + +static QRawFont GetRawFont(const QFont& rFont, bool bWithoutHintingInTextDirection) +{ + QFont::HintingPreference eHinting = rFont.hintingPreference(); + bool bAllowedHintStyle + = !bWithoutHintingInTextDirection + || (eHinting == QFont::PreferNoHinting || eHinting == QFont::PreferVerticalHinting); + if (bWithoutHintingInTextDirection && !bAllowedHintStyle) + { + QFont aFont(rFont); + aFont.setHintingPreference(QFont::PreferVerticalHinting); + return QRawFont::fromFont(aFont); + } + return QRawFont::fromFont(rFont); +} + +void QtGraphics::DrawTextLayout(const GenericSalLayout& rLayout) +{ + const QtFont* pFont = static_cast<const QtFont*>(&rLayout.GetFont()); + assert(pFont); + QRawFont aRawFont(GetRawFont(*pFont, getTextRenderModeForResolutionIndependentLayoutEnabled())); + + QVector<quint32> glyphIndexes; + QVector<QPointF> positions; + + // prevent glyph rotation inside the SalLayout + // probably better to add a parameter to GetNextGlyphs? + QtCommonSalLayout* pQtLayout + = static_cast<QtCommonSalLayout*>(const_cast<GenericSalLayout*>(&rLayout)); + Degree10 nOrientation = rLayout.GetOrientation(); + if (nOrientation) + pQtLayout->SetOrientation(0_deg10); + + DevicePoint aPos; + const GlyphItem* pGlyph; + int nStart = 0; + while (rLayout.GetNextGlyph(&pGlyph, aPos, nStart)) + { + glyphIndexes.push_back(pGlyph->glyphId()); + positions.push_back(QPointF(aPos.getX(), aPos.getY())); + } + + // seems to be common to try to layout an empty string... + if (positions.empty()) + return; + + if (nOrientation) + pQtLayout->SetOrientation(nOrientation); + + QGlyphRun aGlyphRun; + aGlyphRun.setPositions(positions); + aGlyphRun.setGlyphIndexes(glyphIndexes); + aGlyphRun.setRawFont(aRawFont); + + QtPainter aPainter(*m_pBackend); + QColor aColor = toQColor(m_aTextColor); + aPainter.setPen(aColor); + + if (nOrientation) + { + // make text position the center of the rotation + // then rotate and move back + QRect window = aPainter.window(); + window.moveTo(-positions[0].x(), -positions[0].y()); + aPainter.setWindow(window); + + QTransform p; + p.rotate(-static_cast<qreal>(nOrientation.get()) / 10.0); + p.translate(-positions[0].x(), -positions[0].y()); + aPainter.setTransform(p); + } + + aPainter.drawGlyphRun(QPointF(), aGlyphRun); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |