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
  24 #include <vcl/fontcharmap.hxx>
  25
  26 #include <sallayout.hxx>
  27 #include <PhysicalFontCollection.hxx>
  28
  29 #include <QtGui/QFontDatabase>
  30 #include <QtGui/QRawFont>
  31 #include <QtCore/QStringList>
  32
  33 void Qt5Graphics::SetTextColor(Color nColor) { m_aTextColor = nColor; }
  34
  35 void Qt5Graphics::SetFont(const FontSelectPattern* pReqFont, int nFallbackLevel)
  36 {
  37     // release the text styles
  38     for (int i = nFallbackLevel; i < MAX_FALLBACK; ++i)
  39     {
  40         if (!m_pTextStyle[i])
  41             break;
  42         m_pTextStyle[i]->Release();
  43         m_pTextStyle[i] = nullptr;
  44     }
  45
  46     if (!pReqFont)
  47         return;
  48     assert(pReqFont->mpFontInstance);
  49     if (!pReqFont->mpFontInstance)
  50         return;
  51
  52     m_pTextStyle[nFallbackLevel] = static_cast<Qt5Font*>(pReqFont->mpFontInstance);
  53     m_pTextStyle[nFallbackLevel]->Acquire();
  54 }
  55
  56 void Qt5Graphics::GetFontMetric(ImplFontMetricDataRef& rFMD, int nFallbackLevel)
  57 {
  58     QRawFont aRawFont(QRawFont::fromFont(*m_pTextStyle[nFallbackLevel]));
  59
  60     QByteArray aHheaTable = aRawFont.fontTable("hhea");
  61     std::vector<uint8_t> rHhea(aHheaTable.data(), aHheaTable.data() + aHheaTable.size());
  62
  63     QByteArray aOs2Table = aRawFont.fontTable("OS/2");
  64     std::vector<uint8_t> rOS2(aHheaTable.data(), aHheaTable.data() + aHheaTable.size());
  65
  66     rFMD->ImplCalcLineSpacing(rHhea, rOS2, aRawFont.unitsPerEm());
  67
  68     rFMD->SetWidth(aRawFont.averageCharWidth());
  69
  70     rFMD->SetMinKashida(m_pTextStyle[nFallbackLevel]->GetKashidaWidth());
  71 }
  72
  73 const FontCharMapRef Qt5Graphics::GetFontCharMap() const
  74 {
  75     if (!m_pTextStyle[0])
  76         return FontCharMapRef(new FontCharMap());
  77     return static_cast<const Qt5FontFace*>(m_pTextStyle[0]->GetFontFace())->GetFontCharMap();
  78 }
  79
  80 bool Qt5Graphics::GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const
  81 {
  82     if (!m_pTextStyle[0])
  83         return false;
  84     return static_cast<const Qt5FontFace*>(m_pTextStyle[0]->GetFontFace())
  85         ->GetFontCapabilities(rFontCapabilities);
  86 }
  87
  88 void Qt5Graphics::GetDevFontList(PhysicalFontCollection* pPFC)
  89 {
  90     m_pFontCollection = pPFC;
  91     if (pPFC->Count())
  92         return;
  93
  94     QFontDatabase aFDB;
  95     for (auto& family : aFDB.families())
  96         for (auto& style : aFDB.styles(family))
  97         {
  98             // Just get any size - we don't care
  99             QList<int> sizes = aFDB.smoothSizes(family, style);
 100             pPFC->Add(Qt5FontFace::fromQFont(aFDB.font(family, style, *sizes.begin())));
 101         }
 102 }
 103
 104 void Qt5Graphics::ClearDevFontCache() {}
 105
 106 bool Qt5Graphics::AddTempDevFont(PhysicalFontCollection*, const OUString& /*rFileURL*/,
 107                                  const OUString& /*rFontName*/)
 108 {
 109     return false;
 110 }
 111
 112 bool Qt5Graphics::CreateFontSubset(const OUString& /*rToFile*/, const PhysicalFontFace* /*pFont*/,
 113                                    const sal_GlyphId* /*pGlyphIds*/, const sal_uInt8* /*pEncoding*/,
 114                                    sal_Int32* /*pWidths*/, int /*nGlyphs*/,
 115                                    FontSubsetInfo& /*rInfo*/)
 116 {
 117     return false;
 118 }
 119
 120 const void* Qt5Graphics::GetEmbedFontData(const PhysicalFontFace*, long* /*pDataLen*/)
 121 {
 122     return nullptr;
 123 }
 124
 125 void Qt5Graphics::FreeEmbedFontData(const void* /*pData*/, long /*nDataLen*/) {}
 126
 127 void Qt5Graphics::GetGlyphWidths(const PhysicalFontFace* /*pPFF*/, bool /*bVertical*/,
 128                                  std::vector<sal_Int32>& /*rWidths*/, Ucs2UIntMap& /*rUnicodeEnc*/)
 129 {
 130 }
 131
 132 bool Qt5Graphics::GetGlyphBoundRect(const GlyphItem&, tools::Rectangle&) { return false; }
 133
 134 bool Qt5Graphics::GetGlyphOutline(const GlyphItem&, basegfx::B2DPolyPolygon&) { return false; }
 135
 136 std::unique_ptr<SalLayout> Qt5Graphics::GetTextLayout(ImplLayoutArgs&, int nFallbackLevel)
 137 {
 138     if (m_pTextStyle[nFallbackLevel])
 139         return std::unique_ptr<SalLayout>(new GenericSalLayout(*m_pTextStyle[nFallbackLevel]));
 140     return std::unique_ptr<SalLayout>();
 141 }
 142
 143 void Qt5Graphics::DrawTextLayout(const GenericSalLayout&) {}
 144
 145 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */