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424 lines
12 KiB
C++
424 lines
12 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/test/fontconfig_util_linux.h"
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#include <fontconfig/fontconfig.h>
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#include "base/base_paths.h"
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#include "base/environment.h"
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#include "base/files/file_path.h"
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#include "base/files/file_util.h"
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#include "base/logging.h"
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#include "base/macros.h"
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#include "base/path_service.h"
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#include "base/strings/string_util.h"
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namespace base {
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namespace {
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const char kFontsConfTemplate[] = R"(<?xml version="1.0"?>
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<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
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<fontconfig>
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<!-- Cache location. -->
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<cachedir>$1</cachedir>
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<!-- GCS-synced fonts. -->
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<dir>$2</dir>
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<!-- Default properties. -->
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<match target="font">
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<edit name="embeddedbitmap" mode="append_last">
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<bool>false</bool>
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</edit>
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</match>
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<!-- TODO(thomasanderson): Figure out why this is necessary. -->
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<match target="pattern">
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<test name="family" compare="eq">
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<string>Tinos</string>
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</test>
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<test name="prgname" compare="eq">
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<string>chromevox_tests</string>
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</test>
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<edit name="hintstyle" mode="assign">
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<const>hintslight</const>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Times</string>
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</test>
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<edit name="family" mode="assign">
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<string>Tinos</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>sans</string>
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</test>
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<edit name="family" mode="assign">
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<string>DejaVu Sans</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>sans serif</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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</match>
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<!-- Some layout tests specify Helvetica as a family and we need to make sure
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that we don't fallback to Tinos for them -->
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<match target="pattern">
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<test qual="any" name="family">
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<string>Helvetica</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>sans-serif</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>serif</string>
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</test>
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<edit name="family" mode="assign">
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<string>Tinos</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>mono</string>
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</test>
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<edit name="family" mode="assign">
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<string>Cousine</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>monospace</string>
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</test>
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<edit name="family" mode="assign">
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<string>Cousine</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Courier</string>
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</test>
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<edit name="family" mode="assign">
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<string>Cousine</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>cursive</string>
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</test>
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<edit name="family" mode="assign">
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<string>Comic Sans MS</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>fantasy</string>
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</test>
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<edit name="family" mode="assign">
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<string>Impact</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Monaco</string>
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</test>
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<edit name="family" mode="assign">
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<string>Tinos</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Arial</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Courier New</string>
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</test>
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<edit name="family" mode="assign">
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<string>Cousine</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Georgia</string>
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</test>
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<edit name="family" mode="assign">
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<string>Gelasio</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Times New Roman</string>
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</test>
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<edit name="family" mode="assign">
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<string>Tinos</string>
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</edit>
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</match>
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<match target="pattern">
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<test qual="any" name="family">
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<string>Verdana</string>
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</test>
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<!-- NOT metrically compatible! -->
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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</match>
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<!-- TODO(thomasanderson): Move these configs to be test-specific. -->
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<match target="pattern">
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<test name="family" compare="eq">
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<string>NonAntiAliasedSans</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<edit name="antialias" mode="assign">
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<bool>false</bool>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>SlightHintedGeorgia</string>
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</test>
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<edit name="family" mode="assign">
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<string>Gelasio</string>
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</edit>
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<edit name="hintstyle" mode="assign">
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<const>hintslight</const>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>NonHintedSans</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<!-- These deliberately contradict each other. The 'hinting' preference
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should take priority -->
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<edit name="hintstyle" mode="assign">
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<const>hintfull</const>
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</edit>
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<edit name="hinting" mode="assign">
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<bool>false</bool>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>AutohintedSerif</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<edit name="autohint" mode="assign">
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<bool>true</bool>
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</edit>
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<edit name="hintstyle" mode="assign">
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<const>hintmedium</const>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>HintedSerif</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<edit name="autohint" mode="assign">
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<bool>false</bool>
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</edit>
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<edit name="hintstyle" mode="assign">
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<const>hintmedium</const>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>FullAndAutoHintedSerif</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<edit name="autohint" mode="assign">
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<bool>true</bool>
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</edit>
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<edit name="hintstyle" mode="assign">
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<const>hintfull</const>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>SubpixelEnabledArial</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<edit name="rgba" mode="assign">
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<const>rgb</const>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>SubpixelDisabledArial</string>
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</test>
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<edit name="family" mode="assign">
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<string>Arimo</string>
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</edit>
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<edit name="rgba" mode="assign">
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<const>none</const>
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</edit>
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</match>
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<match target="pattern">
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<!-- FontConfig doesn't currently provide a well-defined way to turn on
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subpixel positioning. This is just an arbitrary pattern to use after
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turning subpixel positioning on globally to ensure that we don't have
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issues with our style getting cached for other tests. -->
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<test name="family" compare="eq">
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<string>SubpixelPositioning</string>
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</test>
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<edit name="family" mode="assign">
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<string>Tinos</string>
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</edit>
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</match>
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<match target="pattern">
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<!-- See comments above -->
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<test name="family" compare="eq">
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<string>SubpixelPositioningAhem</string>
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</test>
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<edit name="family" mode="assign">
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<string>ahem</string>
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</edit>
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</match>
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<match target="pattern">
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<test name="family" compare="eq">
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<string>SlightHintedTimesNewRoman</string>
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</test>
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<edit name="family" mode="assign">
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<string>Tinos</string>
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</edit>
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<edit name="hintstyle" mode="assign">
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<const>hintslight</const>
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</edit>
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</match>
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<!-- When we encounter a character that the current font doesn't
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support, gfx::GetFallbackFontForChar() returns the first font
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that does have a glyph for the character. The list of fonts is
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sorted by a pattern that includes the current locale, but doesn't
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include a font family (which means that the fallback font depends
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on the locale but not on the current font).
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DejaVu Sans is commonly the only font that supports some
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characters, such as "⇧", and even when other candidates are
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available, DejaVu Sans is commonly first among them, because of
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the way Fontconfig is ordinarily configured. For example, the
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configuration in the Fonconfig source lists DejaVu Sans under the
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sans-serif generic family, and appends sans-serif to patterns
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that don't already include a generic family (such as the pattern
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in gfx::GetFallbackFontForChar()).
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To get the same fallback font in the layout tests, we could
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duplicate this configuration here, or more directly, simply
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append DejaVu Sans to all patterns. -->
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<match target="pattern">
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<edit name="family" mode="append_last">
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<string>DejaVu Sans</string>
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</edit>
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</match>
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</fontconfig>
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)";
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} // namespace
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void SetUpFontconfig() {
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// TODO(thomasanderson): Use FONTCONFIG_SYSROOT to avoid having to write
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// a new fonts.conf with updated paths.
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std::unique_ptr<Environment> env = Environment::Create();
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if (!env->HasVar("FONTCONFIG_FILE")) {
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// fonts.conf must be generated on-the-fly since it contains absolute paths
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// which may be different if
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// 1. The user moves/renames their build directory (or any parent dirs).
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// 2. The build directory is mapped on a swarming bot at a location
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// different from the one the buildbot used.
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FilePath dir_module;
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PathService::Get(DIR_MODULE, &dir_module);
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FilePath font_cache = dir_module.Append("fontconfig_caches");
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FilePath test_fonts = dir_module.Append("test_fonts");
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std::string fonts_conf = ReplaceStringPlaceholders(
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kFontsConfTemplate, {font_cache.value(), test_fonts.value()}, nullptr);
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// Write the data to a different file and then atomically rename it to
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// fonts.conf. This avoids the file being in a bad state when different
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// parallel tests call this function at the same time.
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FilePath fonts_conf_file_temp;
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if(!CreateTemporaryFileInDir(dir_module, &fonts_conf_file_temp))
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CHECK(CreateTemporaryFile(&fonts_conf_file_temp));
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CHECK(
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WriteFile(fonts_conf_file_temp, fonts_conf.c_str(), fonts_conf.size()));
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FilePath fonts_conf_file = dir_module.Append("fonts.conf");
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if (ReplaceFile(fonts_conf_file_temp, fonts_conf_file, nullptr))
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env->SetVar("FONTCONFIG_FILE", fonts_conf_file.value());
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else
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env->SetVar("FONTCONFIG_FILE", fonts_conf_file_temp.value());
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}
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CHECK(FcInit());
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}
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void TearDownFontconfig() {
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FcFini();
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}
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} // namespace base
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