149 lines
5.7 KiB
C++
149 lines
5.7 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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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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*/
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#include "include/core/SkFontArguments.h"
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#include "include/core/SkFontMgr.h"
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#include "include/core/SkFontStyle.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkStream.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "include/ports/SkFontConfigInterface.h"
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#include "src/ports/SkFontConfigInterface_direct.h"
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#include "tests/Test.h"
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#include "tools/Resources.h"
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#include <fontconfig/fontconfig.h>
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#include <memory>
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#include <utility>
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#include <vector>
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namespace {
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FcConfig* build_fontconfig_with_fontfile(const char* fontFilename) {
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FcConfig* config = FcConfigCreate();
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// FontConfig may modify the passed path (make absolute or other).
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FcConfigSetSysRoot(config, reinterpret_cast<const FcChar8*>(GetResourcePath("").c_str()));
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// FontConfig will lexically compare paths against its version of the sysroot.
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SkString fontFilePath(reinterpret_cast<const char*>(FcConfigGetSysRoot(config)));
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fontFilePath += fontFilename;
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FcConfigAppFontAddFile(config, reinterpret_cast<const FcChar8*>(fontFilePath.c_str()));
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FcConfigBuildFonts(config);
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return config;
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}
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bool fontmgr_understands_ft_named_instance_bits() {
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std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("fonts/Distortable.ttf"));
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if (!distortable) {
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return false;
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}
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sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault();
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SkFontArguments params;
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// The first named variation position in Distortable is 'Thin'.
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params.setCollectionIndex(0x00010000);
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sk_sp<SkTypeface> typeface = fm->makeFromStream(std::move(distortable), params);
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return !!typeface;
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}
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} // namespace
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DEF_TEST(FontConfigInterface_MatchStyleNamedInstance, reporter) {
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if (!fontmgr_understands_ft_named_instance_bits()) {
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return;
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}
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FcConfig* config = build_fontconfig_with_fontfile("/fonts/NotoSansCJK-VF-subset.otf.ttc");
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sk_sp<SkFontConfigInterfaceDirect> fciDirect(new SkFontConfigInterfaceDirect(config));
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static constexpr const char* family_names[]{"Noto Sans CJK JP",
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"Noto Sans CJK HK",
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"Noto Sans CJK SC",
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"Noto Sans CJK TC",
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"Noto Sans CJK KR"};
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static constexpr const struct Test {
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int weight;
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bool highBitsExpectation;
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} tests[] {
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{100, false},
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{300, true },
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{350, true },
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{400, true },
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{500, true },
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{700, true },
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{900, true },
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};
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for (auto&& font_name : family_names) {
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for (auto&& [weight, highBitsExpectation] : tests) {
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SkFontStyle fontStyle(weight, SkFontStyle::kNormal_Width, SkFontStyle::kUpright_Slant);
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SkFontConfigInterface::FontIdentity resultIdentity;
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SkFontStyle resultStyle;
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SkString resultFamily;
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const bool r = fciDirect->matchFamilyName(
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font_name, fontStyle, &resultIdentity, &resultFamily, &resultStyle);
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REPORTER_ASSERT(reporter, r, "Expecting to find a match result.");
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REPORTER_ASSERT(
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reporter,
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(resultIdentity.fTTCIndex >> 16 > 0) == highBitsExpectation,
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"Expected to have the ttcIndex' upper 16 bits refer to a named instance.");
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// Intentionally go through manually creating the typeface so that SkFontStyle is
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// derived from data inside the font, not from the FcPattern that is the FontConfig
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// match result, see https://crbug.com/skia/12881
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sk_sp<SkTypeface> typeface(fciDirect->makeTypeface(resultIdentity).release());
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if (!typeface) {
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ERRORF(reporter, "Could not instantiate typeface, FcVersion: %d", FcGetVersion());
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return;
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}
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SkString family_from_typeface;
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typeface->getFamilyName(&family_from_typeface);
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REPORTER_ASSERT(reporter,
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family_from_typeface == SkString(font_name),
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"Matched font's family name should match the request.");
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SkFontStyle intrinsic_style = typeface->fontStyle();
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REPORTER_ASSERT(reporter,
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intrinsic_style.weight() == weight,
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"Matched font's weight should match request.");
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if (intrinsic_style.weight() != weight) {
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ERRORF(reporter,
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"Matched font had weight: %d, expected %d, family: %s",
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intrinsic_style.weight(),
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weight,
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family_from_typeface.c_str());
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}
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int numAxes = typeface->getVariationDesignPosition(nullptr, 0);
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std::vector<SkFontArguments::VariationPosition::Coordinate> coords;
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coords.resize(numAxes);
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typeface->getVariationDesignPosition(coords.data(), numAxes);
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REPORTER_ASSERT(reporter,
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coords.size() == 1,
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"The font must only have one axis, the weight axis.");
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REPORTER_ASSERT(reporter,
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coords[0].axis == SkSetFourByteTag('w', 'g', 'h', 't'),
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"The weight axis must be present and configured.");
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REPORTER_ASSERT(reporter,
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static_cast<int>(coords[0].value) == weight,
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"The weight axis must match the weight from the request.");
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}
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}
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}
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