ui/gfx/test/fontconfig_util_linux.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gfx/test/fontconfig_util_linux.h"
   6
   7 #include <fontconfig/fontconfig.h>
   8
   9 #include "base/files/file_util.h"
  10 #include "base/logging.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/stringprintf.h"
  13
  14 namespace gfx {
  15
  16 const char* const kSystemFontsForFontconfig[] = {
  17   "/usr/share/fonts/truetype/kochi/kochi-gothic.ttf",
  18   "/usr/share/fonts/truetype/kochi/kochi-mincho.ttf",
  19   "/usr/share/fonts/truetype/msttcorefonts/Arial.ttf",
  20   "/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf",
  21   "/usr/share/fonts/truetype/msttcorefonts/Arial_Bold_Italic.ttf",
  22   "/usr/share/fonts/truetype/msttcorefonts/Arial_Italic.ttf",
  23   "/usr/share/fonts/truetype/msttcorefonts/Comic_Sans_MS.ttf",
  24   "/usr/share/fonts/truetype/msttcorefonts/Comic_Sans_MS_Bold.ttf",
  25   "/usr/share/fonts/truetype/msttcorefonts/Courier_New.ttf",
  26   "/usr/share/fonts/truetype/msttcorefonts/Courier_New_Bold.ttf",
  27   "/usr/share/fonts/truetype/msttcorefonts/Courier_New_Bold_Italic.ttf",
  28   "/usr/share/fonts/truetype/msttcorefonts/Courier_New_Italic.ttf",
  29   "/usr/share/fonts/truetype/msttcorefonts/Georgia.ttf",
  30   "/usr/share/fonts/truetype/msttcorefonts/Georgia_Bold.ttf",
  31   "/usr/share/fonts/truetype/msttcorefonts/Georgia_Bold_Italic.ttf",
  32   "/usr/share/fonts/truetype/msttcorefonts/Georgia_Italic.ttf",
  33   "/usr/share/fonts/truetype/msttcorefonts/Impact.ttf",
  34   "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS.ttf",
  35   "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS_Bold.ttf",
  36   "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS_Bold_Italic.ttf",
  37   "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS_Italic.ttf",
  38   "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman.ttf",
  39   "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman_Bold.ttf",
  40   "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman_Bold_Italic.ttf",
  41   "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman_Italic.ttf",
  42   "/usr/share/fonts/truetype/msttcorefonts/Verdana.ttf",
  43   "/usr/share/fonts/truetype/msttcorefonts/Verdana_Bold.ttf",
  44   "/usr/share/fonts/truetype/msttcorefonts/Verdana_Bold_Italic.ttf",
  45   "/usr/share/fonts/truetype/msttcorefonts/Verdana_Italic.ttf",
  46   // The DejaVuSans font is used by the css2.1 tests.
  47   "/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf",
  48   "/usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_hi.ttf",
  49   "/usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_ta.ttf",
  50   "/usr/share/fonts/truetype/ttf-indic-fonts-core/MuktiNarrow.ttf",
  51 };
  52
  53 const size_t kNumSystemFontsForFontconfig =
  54     arraysize(kSystemFontsForFontconfig);
  55
  56 const char kFontconfigFileHeader[] =
  57     "<?xml version=\"1.0\"?>\n"
  58     "<!DOCTYPE fontconfig SYSTEM \"fonts.dtd\">\n"
  59     "<fontconfig>\n";
  60 const char kFontconfigFileFooter[] = "</fontconfig>";
  61 const char kFontconfigMatchFontHeader[] = "  <match target=\"font\">\n";
  62 const char kFontconfigMatchPatternHeader[] = "  <match target=\"pattern\">\n";
  63 const char kFontconfigMatchFooter[] = "  </match>\n";
  64
  65 void SetUpFontconfig() {
  66   FcInit();
  67
  68   // A primer on undocumented FcConfig reference-counting:
  69   //
  70   // - FcConfigCreate() creates a config with a refcount of 1.
  71   // - FcConfigReference() increments a config's refcount.
  72   // - FcConfigDestroy() decrements a config's refcount, deallocating the
  73   //   config when the count reaches 0.
  74   // - FcConfigSetCurrent() calls FcConfigDestroy() on the old config, but
  75   //   interestingly does not call FcConfigReference() on the new config.
  76   CHECK(FcConfigSetCurrent(FcConfigCreate()));
  77 }
  78
  79 void TearDownFontconfig() {
  80   FcFini();
  81 }
  82
  83 bool LoadFontIntoFontconfig(const base::FilePath& path) {
  84   if (!base::PathExists(path)) {
  85     LOG(ERROR) << "You are missing " << path.value() << ". Try re-running "
  86                << "build/install-build-deps.sh. Also see "
  87                << "http://code.google.com/p/chromium/wiki/LayoutTestsLinux";
  88     return false;
  89   }
  90
  91   if (!FcConfigAppFontAddFile(
  92           NULL, reinterpret_cast<const FcChar8*>(path.value().c_str()))) {
  93     LOG(ERROR) << "Failed to load font " << path.value();
  94     return false;
  95   }
  96
  97   return true;
  98 }
  99
 100 bool LoadSystemFontIntoFontconfig(const std::string& basename) {
 101   for (size_t i = 0; i < kNumSystemFontsForFontconfig; ++i) {
 102     base::FilePath path(kSystemFontsForFontconfig[i]);
 103     if (base::EqualsCaseInsensitiveASCII(path.BaseName().value(), basename))
 104       return LoadFontIntoFontconfig(path);
 105   }
 106   LOG(ERROR) << "Unable to find system font named " << basename;
 107   return false;
 108 }
 109
 110 bool LoadConfigFileIntoFontconfig(const base::FilePath& path) {
 111   // Unlike other FcConfig functions, FcConfigParseAndLoad() doesn't default to
 112   // the current config when passed NULL. So that's cool.
 113   if (!FcConfigParseAndLoad(FcConfigGetCurrent(),
 114           reinterpret_cast<const FcChar8*>(path.value().c_str()), FcTrue)) {
 115     LOG(ERROR) << "Fontconfig failed to load " << path.value();
 116     return false;
 117   }
 118   return true;
 119 }
 120
 121 bool LoadConfigDataIntoFontconfig(const base::FilePath& temp_dir,
 122                                   const std::string& data) {
 123   base::FilePath path;
 124   if (!CreateTemporaryFileInDir(temp_dir, &path)) {
 125     PLOG(ERROR) << "Unable to create temporary file in " << temp_dir.value();
 126     return false;
 127   }
 128   if (base::WriteFile(path, data.data(), data.size()) !=
 129       static_cast<int>(data.size())) {
 130     PLOG(ERROR) << "Unable to write config data to " << path.value();
 131     return false;
 132   }
 133   return LoadConfigFileIntoFontconfig(path);
 134 }
 135
 136 std::string CreateFontconfigEditStanza(const std::string& name,
 137                                        const std::string& type,
 138                                        const std::string& value) {
 139   return base::StringPrintf(
 140       "    <edit name=\"%s\" mode=\"assign\">\n"
 141       "      <%s>%s</%s>\n"
 142       "    </edit>\n",
 143       name.c_str(), type.c_str(), value.c_str(), type.c_str());
 144 }
 145
 146 std::string CreateFontconfigTestStanza(const std::string& name,
 147                                        const std::string& op,
 148                                        const std::string& type,
 149                                        const std::string& value) {
 150   return base::StringPrintf(
 151       "    <test name=\"%s\" compare=\"%s\" qual=\"any\">\n"
 152       "      <%s>%s</%s>\n"
 153       "    </test>\n",
 154       name.c_str(), op.c_str(), type.c_str(), value.c_str(), type.c_str());
 155 }
 156
 157 std::string CreateFontconfigAliasStanza(const std::string& original_family,
 158                                         const std::string& preferred_family) {
 159   return base::StringPrintf(
 160       "  <alias>\n"
 161       "    <family>%s</family>\n"
 162       "    <prefer><family>%s</family></prefer>\n"
 163       "  </alias>\n",
 164       original_family.c_str(), preferred_family.c_str());
 165 }
 166
 167 }  // namespace gfx