vcl/unx/generic/gdi/freetypetextrender.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 <sal/config.h>
  21
  22 #include <unx/freetypetextrender.hxx>
  23
  24 #include <unotools/configmgr.hxx>
  25 #include <vcl/settings.hxx>
  26 #include <vcl/sysdata.hxx>
  27 #include <vcl/svapp.hxx>
  28 #include <vcl/fontcharmap.hxx>
  29 #include <sal/log.hxx>
  30
  31 #include <unx/fontmanager.hxx>
  32 #include <unx/geninst.h>
  33 #include <unx/glyphcache.hxx>
  34 #include <unx/fc_fontoptions.hxx>
  35 #include <unx/freetype_glyphcache.hxx>
  36 #include <font/PhysicalFontFace.hxx>
  37 #include <font/FontMetricData.hxx>
  38
  39 #include <sallayout.hxx>
  40
  41 FreeTypeTextRenderImpl::FreeTypeTextRenderImpl()
  42     : mnTextColor(Color(0x00, 0x00, 0x00)) //black
  43 {
  44 }
  45
  46 FreeTypeTextRenderImpl::~FreeTypeTextRenderImpl()
  47 {
  48     ReleaseFonts();
  49 }
  50
  51 void FreeTypeTextRenderImpl::SetFont(LogicalFontInstance *pEntry, int nFallbackLevel)
  52 {
  53     // release all no longer needed font resources
  54     for( int i = nFallbackLevel; i < MAX_FALLBACK; ++i )
  55     {
  56         // old server side font is no longer referenced
  57         mpFreetypeFont[i] = nullptr;
  58     }
  59
  60     // return early if there is no new font
  61     if( !pEntry )
  62         return;
  63
  64     FreetypeFontInstance* pFreetypeFont = static_cast<FreetypeFontInstance*>(pEntry);
  65     mpFreetypeFont[ nFallbackLevel ] = pFreetypeFont;
  66
  67     // ignore fonts with e.g. corrupted font files
  68     if (!mpFreetypeFont[nFallbackLevel]->GetFreetypeFont().TestFont())
  69         mpFreetypeFont[nFallbackLevel] = nullptr;
  70 }
  71
  72 FontCharMapRef FreeTypeTextRenderImpl::GetFontCharMap() const
  73 {
  74     if (!mpFreetypeFont[0])
  75         return nullptr;
  76     return mpFreetypeFont[0]->GetFontFace()->GetFontCharMap();
  77 }
  78
  79 bool FreeTypeTextRenderImpl::GetFontCapabilities(vcl::FontCapabilities &rGetImplFontCapabilities) const
  80 {
  81     if (!mpFreetypeFont[0])
  82         return false;
  83     return mpFreetypeFont[0]->GetFontFace()->GetFontCapabilities(rGetImplFontCapabilities);
  84 }
  85
  86 // SalGraphics
  87 void
  88 FreeTypeTextRenderImpl::SetTextColor( Color nColor )
  89 {
  90     if( mnTextColor != nColor )
  91     {
  92         mnTextColor = nColor;
  93     }
  94 }
  95
  96 bool FreeTypeTextRenderImpl::AddTempDevFont(vcl::font::PhysicalFontCollection* pFontCollection,
  97                                             const OUString& rFileURL, const OUString& rFontName)
  98 {
  99     // inform PSP font manager
 100     psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
 101     std::vector<psp::fontID> aFontIds = rMgr.addFontFile(rFileURL);
 102     if (aFontIds.empty())
 103         return false;
 104
 105     FreetypeManager& rFreetypeManager = FreetypeManager::get();
 106     for (auto const& nFontId : aFontIds)
 107     {
 108         // prepare font data
 109         auto const* pFont = rMgr.getFont(nFontId);
 110         if (!pFont)
 111             continue;
 112
 113         // inform glyph cache of new font
 114         FontAttributes aDFA = pFont->m_aFontAttributes;
 115         aDFA.IncreaseQualityBy(5800);
 116         if (!rFontName.isEmpty())
 117             aDFA.SetFamilyName(rFontName);
 118
 119         int nFaceNum = rMgr.getFontFaceNumber(nFontId);
 120         int nVariantNum = rMgr.getFontFaceVariation(nFontId);
 121
 122         const OString aFileName = rMgr.getFontFileSysPath(nFontId);
 123         rFreetypeManager.AddFontFile(aFileName, nFaceNum, nVariantNum, nFontId, aDFA);
 124     }
 125
 126     // announce new font to device's font list
 127     rFreetypeManager.AnnounceFonts(pFontCollection);
 128     return true;
 129 }
 130
 131 void FreeTypeTextRenderImpl::ClearDevFontCache()
 132 {
 133     FreetypeManager::get().ClearFontCache();
 134 }
 135
 136 void FreeTypeTextRenderImpl::GetDevFontList(vcl::font::PhysicalFontCollection* pFontCollection)
 137 {
 138     // prepare the FreetypeManager using psprint's font infos
 139     FreetypeManager& rFreetypeManager = FreetypeManager::get();
 140
 141     psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
 142     ::std::vector<psp::fontID> aList;
 143     rMgr.getFontList(aList);
 144     for (auto const& nFontId : aList)
 145     {
 146         auto const* pFont = rMgr.getFont(nFontId);
 147         if (!pFont)
 148             continue;
 149
 150         // normalize face number to the FreetypeManager
 151         int nFaceNum = rMgr.getFontFaceNumber(nFontId);
 152         int nVariantNum = rMgr.getFontFaceVariation(nFontId);
 153
 154         // inform FreetypeManager about this font provided by the PsPrint subsystem
 155         FontAttributes aDFA = pFont->m_aFontAttributes;
 156         aDFA.IncreaseQualityBy(4096);
 157         const OString aFileName = rMgr.getFontFileSysPath(nFontId);
 158         rFreetypeManager.AddFontFile(aFileName, nFaceNum, nVariantNum, nFontId, aDFA);
 159     }
 160
 161     // announce glyphcache fonts
 162     rFreetypeManager.AnnounceFonts(pFontCollection);
 163
 164     // register platform specific font substitutions if available
 165     SalGenericInstance::RegisterFontSubstitutors(pFontCollection);
 166 }
 167
 168 void FreeTypeTextRenderImpl::GetFontMetric( FontMetricDataRef& rxFontMetric, int nFallbackLevel )
 169 {
 170     if( nFallbackLevel >= MAX_FALLBACK )
 171         return;
 172
 173     if (mpFreetypeFont[nFallbackLevel])
 174         mpFreetypeFont[nFallbackLevel]->GetFreetypeFont().GetFontMetric(rxFontMetric);
 175 }
 176
 177 std::unique_ptr<GenericSalLayout> FreeTypeTextRenderImpl::GetTextLayout(int nFallbackLevel)
 178 {
 179     assert(mpFreetypeFont[nFallbackLevel]);
 180     if (!mpFreetypeFont[nFallbackLevel])
 181         return nullptr;
 182     return std::make_unique<GenericSalLayout>(*mpFreetypeFont[nFallbackLevel]);
 183 }
 184
 185 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */