blob: 380204330790130f0af6208b97e71d1fad22b1ab [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flutter/testing/testing.h"
#include "impeller/playground/playground_test.h"
#include "impeller/typographer/backends/skia/text_frame_skia.h"
#include "impeller/typographer/backends/skia/text_render_context_skia.h"
#include "impeller/typographer/lazy_glyph_atlas.h"
#include "third_party/skia/include/core/SkData.h"
#include "third_party/skia/include/core/SkTextBlob.h"
namespace impeller {
namespace testing {
using TypographerTest = PlaygroundTest;
INSTANTIATE_PLAYGROUND_SUITE(TypographerTest);
TEST_P(TypographerTest, CanConvertTextBlob) {
SkFont font;
auto blob = SkTextBlob::MakeFromString(
"the quick brown fox jumped over the lazy dog.", font);
ASSERT_TRUE(blob);
auto frame = TextFrameFromTextBlob(blob);
ASSERT_EQ(frame.GetRunCount(), 1u);
for (const auto& run : frame.GetRuns()) {
ASSERT_TRUE(run.IsValid());
ASSERT_EQ(run.GetGlyphCount(), 45u);
}
}
TEST_P(TypographerTest, CanCreateRenderContext) {
auto context = TextRenderContext::Create(GetContext());
ASSERT_TRUE(context && context->IsValid());
}
TEST_P(TypographerTest, CanCreateGlyphAtlas) {
auto context = TextRenderContext::Create(GetContext());
ASSERT_TRUE(context && context->IsValid());
SkFont sk_font;
auto blob = SkTextBlob::MakeFromString("hello", sk_font);
ASSERT_TRUE(blob);
auto atlas = context->CreateGlyphAtlas(GlyphAtlas::Type::kAlphaBitmap,
TextFrameFromTextBlob(blob));
ASSERT_NE(atlas, nullptr);
OpenPlaygroundHere([](RenderTarget&) { return true; });
}
static sk_sp<SkData> OpenFixtureAsSkData(const char* fixture_name) {
auto mapping = flutter::testing::OpenFixtureAsMapping(fixture_name);
if (!mapping) {
return nullptr;
}
auto data = SkData::MakeWithProc(
mapping->GetMapping(), mapping->GetSize(),
[](const void* ptr, void* context) {
delete reinterpret_cast<fml::Mapping*>(context);
},
mapping.get());
mapping.release();
return data;
}
TEST_P(TypographerTest, LazyAtlasTracksColor) {
#if FML_OS_MACOSX
auto mapping = OpenFixtureAsSkData("Apple Color Emoji.ttc");
#else
auto mapping = OpenFixtureAsSkData("NotoColorEmoji.ttf");
#endif
ASSERT_TRUE(mapping);
SkFont emoji_font(SkTypeface::MakeFromData(mapping), 50.0);
SkFont sk_font;
auto blob = SkTextBlob::MakeFromString("hello", sk_font);
ASSERT_TRUE(blob);
auto frame = TextFrameFromTextBlob(blob);
ASSERT_FALSE(frame.HasColor());
LazyGlyphAtlas lazy_atlas;
ASSERT_FALSE(lazy_atlas.HasColor());
lazy_atlas.AddTextFrame(std::move(frame));
ASSERT_FALSE(lazy_atlas.HasColor());
frame = TextFrameFromTextBlob(SkTextBlob::MakeFromString("😀 ", emoji_font));
ASSERT_TRUE(frame.HasColor());
lazy_atlas.AddTextFrame(std::move(frame));
ASSERT_TRUE(lazy_atlas.HasColor());
}
TEST_P(TypographerTest, GlyphAtlasWithOddUniqueGlyphSize) {
auto context = TextRenderContext::Create(GetContext());
ASSERT_TRUE(context && context->IsValid());
SkFont sk_font;
auto blob = SkTextBlob::MakeFromString("AGH", sk_font);
ASSERT_TRUE(blob);
auto atlas = context->CreateGlyphAtlas(GlyphAtlas::Type::kAlphaBitmap,
TextFrameFromTextBlob(blob));
ASSERT_NE(atlas, nullptr);
ASSERT_NE(atlas->GetTexture(), nullptr);
// The 3 unique glyphs should not evenly fit into a square texture, so we
// should have a rectangular one.
ASSERT_EQ(atlas->GetTexture()->GetSize().width * 2,
atlas->GetTexture()->GetSize().height);
}
TEST_P(TypographerTest, GlyphAtlasWithLotsOfdUniqueGlyphSize) {
auto context = TextRenderContext::Create(GetContext());
ASSERT_TRUE(context && context->IsValid());
SkFont sk_font;
auto blob = SkTextBlob::MakeFromString(
"QWERTYUIOPASDFGHJKLZXCVBNMqewrtyuiopasdfghjklzxcvbnm,.<>[]{};':"
"2134567890-=!@#$%^&*()_+"
"œ∑´®†¥¨ˆøπ““‘‘åß∂ƒ©˙∆˚¬…æ≈ç√∫˜µ≤≥≥≥≥÷¡™£¢∞§¶•ªº–≠⁄€‹›fifl‡°·‚—±Œ„´‰Á¨Ø∏”’/"
"* Í˝ */¸˛Ç◊ı˜Â¯˘¿",
sk_font);
ASSERT_TRUE(blob);
TextFrame frame;
size_t count = 0;
TextRenderContext::FrameIterator iterator = [&]() -> const TextFrame* {
if (count < 8) {
count++;
frame = TextFrameFromTextBlob(blob, 0.6 * count);
return &frame;
}
return nullptr;
};
auto atlas =
context->CreateGlyphAtlas(GlyphAtlas::Type::kAlphaBitmap, iterator);
ASSERT_NE(atlas, nullptr);
ASSERT_NE(atlas->GetTexture(), nullptr);
ASSERT_EQ(atlas->GetTexture()->GetSize().width * 2,
atlas->GetTexture()->GetSize().height);
}
} // namespace testing
} // namespace impeller