vcl/qt5/Qt5Graphics_Text.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <Qt5Graphics.hxx>
  21 #include <Qt5FontFace.hxx>
  22 #include <Qt5Font.hxx>
  23 #include <Qt5Painter.hxx>
  24
  25 #include <vcl/fontcharmap.hxx>
  26 #include <unx/geninst.h>
  27 #include <unx/fontmanager.hxx>
  28 #include <unx/glyphcache.hxx>
  29 #include <unx/genpspgraphics.h>
  30
  31 #include <sallayout.hxx>
  32 #include <PhysicalFontCollection.hxx>
  33
  34 #include <QtGui/QGlyphRun>
  35 #include <QtGui/QFontDatabase>
  36 #include <QtGui/QRawFont>
  37 #include <QtCore/QStringList>
  38
  39 void Qt5Graphics::SetTextColor(Color nColor) { m_aTextColor = nColor; }
  40
  41 void Qt5Graphics::SetFont(LogicalFontInstance* pReqFont, int nFallbackLevel)
  42 {
  43     // release the text styles
  44     for (int i = nFallbackLevel; i < MAX_FALLBACK; ++i)
  45     {
  46         if (!m_pTextStyle[i])
  47             break;
  48         m_pTextStyle[i].clear();
  49     }
  50
  51     if (!pReqFont)
  52         return;
  53
  54     m_pTextStyle[nFallbackLevel] = static_cast<Qt5Font*>(pReqFont);
  55 }
  56
  57 void Qt5Graphics::GetFontMetric(ImplFontMetricDataRef& rFMD, int nFallbackLevel)
  58 {
  59     QRawFont aRawFont(QRawFont::fromFont(*m_pTextStyle[nFallbackLevel]));
  60     Qt5FontFace::fillAttributesFromQFont(*m_pTextStyle[nFallbackLevel], *rFMD);
  61
  62     rFMD->ImplCalcLineSpacing(m_pTextStyle[nFallbackLevel].get());
  63
  64     rFMD->SetSlant(0);
  65     rFMD->SetWidth(aRawFont.averageCharWidth());
  66
  67     rFMD->SetMinKashida(m_pTextStyle[nFallbackLevel]->GetKashidaWidth());
  68 }
  69
  70 FontCharMapRef Qt5Graphics::GetFontCharMap() const
  71 {
  72     if (!m_pTextStyle[0])
  73         return FontCharMapRef(new FontCharMap());
  74     return static_cast<const Qt5FontFace*>(m_pTextStyle[0]->GetFontFace())->GetFontCharMap();
  75 }
  76
  77 bool Qt5Graphics::GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const
  78 {
  79     if (!m_pTextStyle[0])
  80         return false;
  81     return static_cast<const Qt5FontFace*>(m_pTextStyle[0]->GetFontFace())
  82         ->GetFontCapabilities(rFontCapabilities);
  83 }
  84
  85 void Qt5Graphics::GetDevFontList(PhysicalFontCollection* pPFC)
  86 {
  87     static const bool bUseFontconfig = (nullptr == getenv("SAL_VCL_QT5_NO_FONTCONFIG"));
  88
  89     m_pFontCollection = pPFC;
  90     if (pPFC->Count())
  91         return;
  92
  93     QFontDatabase aFDB;
  94     GlyphCache& rGC = GlyphCache::GetInstance();
  95     psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
  96     ::std::vector<psp::fontID> aList;
  97     psp::FastPrintFontInfo aInfo;
  98
  99     rMgr.getFontList(aList);
 100     for (auto const& elem : aList)
 101     {
 102         if (!rMgr.getFontFastInfo(elem, aInfo))
 103             continue;
 104
 105         // normalize face number to the GlyphCache
 106         int nFaceNum = rMgr.getFontFaceNumber(aInfo.m_nID);
 107         int nVariantNum = rMgr.getFontFaceVariation(aInfo.m_nID);
 108
 109         // inform GlyphCache about this font provided by the PsPrint subsystem
 110         FontAttributes aDFA = GenPspGraphics::Info2FontAttributes(aInfo);
 111         aDFA.IncreaseQualityBy(4096);
 112         const OString& rFileName = rMgr.getFontFileSysPath(aInfo.m_nID);
 113         rGC.AddFontFile(rFileName, nFaceNum, nVariantNum, aInfo.m_nID, aDFA);
 114     }
 115
 116     if (bUseFontconfig)
 117         SalGenericInstance::RegisterFontSubstitutors(pPFC);
 118
 119     for (auto& family : aFDB.families())
 120         for (auto& style : aFDB.styles(family))
 121             pPFC->Add(Qt5FontFace::fromQFontDatabase(family, style));
 122 }
 123
 124 void Qt5Graphics::ClearDevFontCache() {}
 125
 126 bool Qt5Graphics::AddTempDevFont(PhysicalFontCollection*, const OUString& /*rFileURL*/,
 127                                  const OUString& /*rFontName*/)
 128 {
 129     return false;
 130 }
 131
 132 bool Qt5Graphics::CreateFontSubset(const OUString& /*rToFile*/, const PhysicalFontFace* /*pFont*/,
 133                                    const sal_GlyphId* /*pGlyphIds*/, const sal_uInt8* /*pEncoding*/,
 134                                    sal_Int32* /*pWidths*/, int /*nGlyphs*/,
 135                                    FontSubsetInfo& /*rInfo*/)
 136 {
 137     return false;
 138 }
 139
 140 const void* Qt5Graphics::GetEmbedFontData(const PhysicalFontFace*, long* /*pDataLen*/)
 141 {
 142     return nullptr;
 143 }
 144
 145 void Qt5Graphics::FreeEmbedFontData(const void* /*pData*/, long /*nDataLen*/) {}
 146
 147 void Qt5Graphics::GetGlyphWidths(const PhysicalFontFace* /*pPFF*/, bool /*bVertical*/,
 148                                  std::vector<sal_Int32>& /*rWidths*/, Ucs2UIntMap& /*rUnicodeEnc*/)
 149 {
 150 }
 151
 152 class Qt5CommonSalLayout : public GenericSalLayout
 153 {
 154 public:
 155     Qt5CommonSalLayout(LogicalFontInstance& rLFI)
 156         : GenericSalLayout(rLFI)
 157     {
 158     }
 159
 160     void SetOrientation(int nOrientation) { mnOrientation = nOrientation; }
 161 };
 162
 163 std::unique_ptr<GenericSalLayout> Qt5Graphics::GetTextLayout(int nFallbackLevel)
 164 {
 165     assert(m_pTextStyle[nFallbackLevel]);
 166     if (!m_pTextStyle[nFallbackLevel])
 167         return nullptr;
 168     return std::make_unique<Qt5CommonSalLayout>(*m_pTextStyle[nFallbackLevel]);
 169 }
 170
 171 void Qt5Graphics::DrawTextLayout(const GenericSalLayout& rLayout)
 172 {
 173     const Qt5Font* pFont = static_cast<const Qt5Font*>(&rLayout.GetFont());
 174     assert(pFont);
 175     QRawFont aRawFont(QRawFont::fromFont(*pFont));
 176
 177     QVector<quint32> glyphIndexes;
 178     QVector<QPointF> positions;
 179
 180     // prevent glyph rotation inside the SalLayout
 181     // probably better to add a parameter to GetNextGlyphs?
 182     Qt5CommonSalLayout* pQt5Layout
 183         = static_cast<Qt5CommonSalLayout*>(const_cast<GenericSalLayout*>(&rLayout));
 184     int nOrientation = rLayout.GetOrientation();
 185     if (nOrientation)
 186         pQt5Layout->SetOrientation(0);
 187
 188     Point aPos;
 189     const GlyphItem* pGlyph;
 190     int nStart = 0;
 191     while (rLayout.GetNextGlyph(&pGlyph, aPos, nStart))
 192     {
 193         glyphIndexes.push_back(pGlyph->glyphId());
 194         positions.push_back(QPointF(aPos.X(), aPos.Y()));
 195     }
 196
 197     if (nOrientation)
 198         pQt5Layout->SetOrientation(nOrientation);
 199
 200     QGlyphRun aGlyphRun;
 201     aGlyphRun.setPositions(positions);
 202     aGlyphRun.setGlyphIndexes(glyphIndexes);
 203     aGlyphRun.setRawFont(aRawFont);
 204
 205     Qt5Painter aPainter(*this);
 206     QColor aColor = toQColor(m_aTextColor);
 207     aPainter.setPen(aColor);
 208
 209     if (nOrientation)
 210     {
 211         // make text position the center of the rotation
 212         // then rotate and move back
 213         QRect window = aPainter.window();
 214         window.moveTo(-positions[0].x(), -positions[0].y());
 215         aPainter.setWindow(window);
 216
 217         QTransform p;
 218         p.rotate(-static_cast<qreal>(nOrientation) / 10.0);
 219         p.translate(-positions[0].x(), -positions[0].y());
 220         aPainter.setTransform(p);
 221     }
 222
 223     aPainter.drawGlyphRun(QPointF(), aGlyphRun);
 224 }
 225
 226 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */