blob: 9e21eef8293c4deab5946ac69c1353a74b14b5e2 [file] [log] [blame]
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkFontArguments.h"
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontStyle.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/ports/SkFontConfigInterface.h"
#include "src/ports/SkFontConfigInterface_direct.h"
#include "tests/Test.h"
#include "tools/Resources.h"
#include <fontconfig/fontconfig.h>
#include <memory>
#include <utility>
#include <vector>
namespace {
FcConfig* build_fontconfig_with_fontfile(const char* fontFilename) {
FcConfig* config = FcConfigCreate();
// FontConfig may modify the passed path (make absolute or other).
FcConfigSetSysRoot(config, reinterpret_cast<const FcChar8*>(GetResourcePath("").c_str()));
// FontConfig will lexically compare paths against its version of the sysroot.
SkString fontFilePath(reinterpret_cast<const char*>(FcConfigGetSysRoot(config)));
fontFilePath += fontFilename;
FcConfigAppFontAddFile(config, reinterpret_cast<const FcChar8*>(fontFilePath.c_str()));
FcConfigBuildFonts(config);
return config;
}
bool fontmgr_understands_ft_named_instance_bits() {
std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("fonts/Distortable.ttf"));
if (!distortable) {
return false;
}
sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault();
SkFontArguments params;
// The first named variation position in Distortable is 'Thin'.
params.setCollectionIndex(0x00010000);
sk_sp<SkTypeface> typeface = fm->makeFromStream(std::move(distortable), params);
return !!typeface;
}
} // namespace
DEF_TEST(FontConfigInterface_MatchStyleNamedInstance, reporter) {
if (!fontmgr_understands_ft_named_instance_bits()) {
return;
}
FcConfig* config = build_fontconfig_with_fontfile("/fonts/NotoSansCJK-VF-subset.otf.ttc");
sk_sp<SkFontConfigInterfaceDirect> fciDirect(new SkFontConfigInterfaceDirect(config));
static constexpr const char* family_names[]{"Noto Sans CJK JP",
"Noto Sans CJK HK",
"Noto Sans CJK SC",
"Noto Sans CJK TC",
"Noto Sans CJK KR"};
static constexpr const struct Test {
int weight;
bool highBitsExpectation;
} tests[] {
{100, false},
{300, true },
{350, true },
{400, true },
{500, true },
{700, true },
{900, true },
};
for (auto&& font_name : family_names) {
for (auto&& [weight, highBitsExpectation] : tests) {
SkFontStyle fontStyle(weight, SkFontStyle::kNormal_Width, SkFontStyle::kUpright_Slant);
SkFontConfigInterface::FontIdentity resultIdentity;
SkFontStyle resultStyle;
SkString resultFamily;
const bool r = fciDirect->matchFamilyName(
font_name, fontStyle, &resultIdentity, &resultFamily, &resultStyle);
REPORTER_ASSERT(reporter, r, "Expecting to find a match result.");
REPORTER_ASSERT(
reporter,
(resultIdentity.fTTCIndex >> 16 > 0) == highBitsExpectation,
"Expected to have the ttcIndex' upper 16 bits refer to a named instance.");
// Intentionally go through manually creating the typeface so that SkFontStyle is
// derived from data inside the font, not from the FcPattern that is the FontConfig
// match result, see https://crbug.com/skia/12881
sk_sp<SkTypeface> typeface(fciDirect->makeTypeface(resultIdentity).release());
if (!typeface) {
ERRORF(reporter, "Could not instantiate typeface, FcVersion: %d", FcGetVersion());
return;
}
SkString family_from_typeface;
typeface->getFamilyName(&family_from_typeface);
REPORTER_ASSERT(reporter,
family_from_typeface == SkString(font_name),
"Matched font's family name should match the request.");
SkFontStyle intrinsic_style = typeface->fontStyle();
REPORTER_ASSERT(reporter,
intrinsic_style.weight() == weight,
"Matched font's weight should match request.");
if (intrinsic_style.weight() != weight) {
ERRORF(reporter,
"Matched font had weight: %d, expected %d, family: %s",
intrinsic_style.weight(),
weight,
family_from_typeface.c_str());
}
int numAxes = typeface->getVariationDesignPosition(nullptr, 0);
std::vector<SkFontArguments::VariationPosition::Coordinate> coords;
coords.resize(numAxes);
typeface->getVariationDesignPosition(coords.data(), numAxes);
REPORTER_ASSERT(reporter,
coords.size() == 1,
"The font must only have one axis, the weight axis.");
REPORTER_ASSERT(reporter,
coords[0].axis == SkSetFourByteTag('w', 'g', 'h', 't'),
"The weight axis must be present and configured.");
REPORTER_ASSERT(reporter,
static_cast<int>(coords[0].value) == weight,
"The weight axis must match the weight from the request.");
}
}
}