font_platform_data_mac_test.mm | Explore in Territory

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/platform/fonts/mac/font_platform_data_mac.h"

#include "base/apple/bridging.h"
#include "base/apple/foundation_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/font_family_names.h"
#include "third_party/blink/renderer/platform/fonts/font_selection_types.h"
#include "third_party/blink/renderer/platform/fonts/mac/font_matcher_mac.h"
#include "third_party/skia/include/core/SkTypeface.h"
#include "third_party/skia/include/ports/SkTypeface_mac.h"

namespace blink {

namespace {

constexpr SkFourByteTag kOpszTag = SkSetFourByteTag('o', 'p', 's', 'z');
constexpr SkFourByteTag kWghtTag = SkSetFourByteTag('w', 'g', 'h', 't');

sk_sp<SkTypeface> MakeSystemFontOfSize(float size) {
  return SkMakeTypefaceFromCTFont(MatchSystemUIFont(kNormalWeightValue,
                                                    kNormalSlopeValue,
                                                    kNormalWidthValue, size)
                                      .release());
}

}  // namespace

TEST(FontPlatformDataMacTest, VariableOpticalSizingThreshold) {
  // The system font has a real optical size axis with range 17-96.

  // Below the optical size axis minimum.
  sk_sp<SkTypeface> system_font(MakeSystemFontOfSize(12));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 6));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 12));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 17));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 18));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 19));
  EXPECT_TRUE(
      VariableAxisChangeEffective(system_font.get(), kOpszTag, 19.8999));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 20));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 24));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 72));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 96));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 97));

  // Just smaller than the old switch-over size in 10.15, which is 19.9.
  system_font = MakeSystemFontOfSize(19);
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 6));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 12));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 17));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 18));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 19));
  EXPECT_TRUE(
      VariableAxisChangeEffective(system_font.get(), kOpszTag, 19.8999));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 20));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 24));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 72));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 96));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 97));

  // Just larger than the old switch-over size in 10.15, which is 19.9.
  system_font = MakeSystemFontOfSize(20);
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 6));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 12));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 17));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 18));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 19));
  EXPECT_TRUE(
      VariableAxisChangeEffective(system_font.get(), kOpszTag, 19.8999));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 20));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 24));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 72));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 96));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 97));

  // Above the optical size axis maximum.
  system_font = MakeSystemFontOfSize(128);
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 6));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 12));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 17));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 18));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 19));
  EXPECT_TRUE(
      VariableAxisChangeEffective(system_font.get(), kOpszTag, 19.8999));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 20));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 24));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 72));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 96));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kOpszTag, 97));
}

TEST(FontPlatformDataMacTest, VariableWeight) {
  sk_sp<SkTypeface> system_font(MakeSystemFontOfSize(19));
  EXPECT_FALSE(VariableAxisChangeEffective(system_font.get(), kWghtTag, 400));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kWghtTag, 400.5));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kWghtTag, 395.5));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kWghtTag, 2000));
  EXPECT_TRUE(VariableAxisChangeEffective(system_font.get(), kWghtTag, 0));
}

TEST(FontPlatformDataMacTest, VariableWeightClamped) {
  sk_sp<SkTypeface> system_font(MakeSystemFontOfSize(19));

  SkFontArguments::VariationPosition::Coordinate coordinates[1] = {
      {kWghtTag, 1000}};

  SkFontArguments::VariationPosition variation_design_position_black{
      coordinates, 1};
  sk_sp<SkTypeface> black_typeface(
      system_font->makeClone(SkFontArguments().setVariationDesignPosition(
          variation_design_position_black)));

  EXPECT_FALSE(
      VariableAxisChangeEffective(black_typeface.get(), kWghtTag, 1001));
  EXPECT_FALSE(
      VariableAxisChangeEffective(black_typeface.get(), kWghtTag, 10000));
  EXPECT_TRUE(VariableAxisChangeEffective(black_typeface.get(), kWghtTag, 999));

  coordinates[0].value = 1;
  SkFontArguments::VariationPosition variation_design_position_thin{coordinates,
                                                                    1};
  sk_sp<SkTypeface> thin_typeface(
      system_font->makeClone(SkFontArguments().setVariationDesignPosition(
          variation_design_position_thin)));

  EXPECT_FALSE(VariableAxisChangeEffective(thin_typeface.get(), kWghtTag, 0));
  EXPECT_FALSE(VariableAxisChangeEffective(thin_typeface.get(), kWghtTag, -1));
  EXPECT_TRUE(VariableAxisChangeEffective(thin_typeface.get(), kWghtTag, 2));
}
}
chromium/third_party/blink/renderer/platform/fonts/mac/font_platform_data_mac_test.mm
