DEF_TEST(TextBlob_extended, reporter) {
SkTextBlobBuilder textBlobBuilder;
SkFont font;
const char text1[] = "Foo";
const char text2[] = "Bar";
int glyphCount = font.countText(text1, strlen(text1), SkTextEncoding::kUTF8);
SkAutoTMalloc<uint16_t> glyphs(glyphCount);
(void)font.textToGlyphs(text1, strlen(text1), SkTextEncoding::kUTF8, glyphs.get(), glyphCount);
auto run = SkTextBlobBuilderPriv::AllocRunText(&textBlobBuilder,
font, glyphCount, 0, 0, SkToInt(strlen(text2)), SkString(), nullptr);
memcpy(run.glyphs, glyphs.get(), sizeof(uint16_t) * glyphCount);
memcpy(run.utf8text, text2, strlen(text2));
for (int i = 0; i < glyphCount; ++i) {
run.clusters[i] = SkTMin(SkToU32(i), SkToU32(strlen(text2)));
}
sk_sp<SkTextBlob> blob(textBlobBuilder.make());
REPORTER_ASSERT(reporter, blob);
for (SkTextBlobRunIterator it(blob.get()); !it.done(); it.next()) {
REPORTER_ASSERT(reporter, it.glyphCount() == (uint32_t)glyphCount);
for (uint32_t i = 0; i < it.glyphCount(); ++i) {
REPORTER_ASSERT(reporter, it.glyphs()[i] == glyphs[i]);
}
REPORTER_ASSERT(reporter, SkTextBlobRunIterator::kDefault_Positioning == it.positioning());
REPORTER_ASSERT(reporter, (SkPoint{0.0f, 0.0f}) == it.offset());
REPORTER_ASSERT(reporter, it.textSize() > 0);
REPORTER_ASSERT(reporter, it.clusters());
for (uint32_t i = 0; i < it.glyphCount(); ++i) {
REPORTER_ASSERT(reporter, i == it.clusters()[i]);
}
REPORTER_ASSERT(reporter, 0 == strncmp(text2, it.text(), it.textSize()));
}
}
static void add_run(SkTextBlobBuilder* builder, const char text[], SkScalar x, SkScalar y,
sk_sp<SkTypeface> tf) {
SkFont font;
font.setEdging(SkFont::Edging::kAntiAlias);
font.setSubpixel(true);
font.setSize(16);
font.setTypeface(tf);
int glyphCount = font.countText(text, strlen(text), SkTextEncoding::kUTF8);
SkTextBlobBuilder::RunBuffer buffer = builder->allocRun(font, glyphCount, x, y);
(void)font.textToGlyphs(text, strlen(text), SkTextEncoding::kUTF8, buffer.glyphs, glyphCount);
}
// This unit test verifies blob bounds computation.
static void TestBounds(skiatest::Reporter* reporter) {
SkTextBlobBuilder builder;
SkFont font;
// Explicit bounds.
{
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, !blob);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
builder.allocRun(font, 16, 0, 0, &r1);
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, blob->bounds() == r1);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
builder.allocRunPosH(font, 16, 0, &r1);
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, blob->bounds() == r1);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
builder.allocRunPos(font, 16, &r1);
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, blob->bounds() == r1);
}
{
SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
SkRect r2 = SkRect::MakeXYWH(15, 20, 50, 50);
SkRect r3 = SkRect::MakeXYWH(0, 5, 10, 5);
builder.allocRun(font, 16, 0, 0, &r1);
builder.allocRunPosH(font, 16, 0, &r2);
builder.allocRunPos(font, 16, &r3);
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, blob->bounds() == SkRect::MakeXYWH(0, 5, 65, 65));
}
{
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, !blob);
}
// Implicit bounds
{
// Exercise the empty bounds path, and ensure that RunRecord-aligned pos buffers
// don't trigger asserts (http://crbug.com/542643).
SkFont font;
font.setSize(0);
const char* txt = "BOOO";
const size_t txtLen = strlen(txt);
const int glyphCount = font.countText(txt, txtLen, SkTextEncoding::kUTF8);
const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(font, glyphCount);
font.textToGlyphs(txt, txtLen, SkTextEncoding::kUTF8, buffer.glyphs, glyphCount);
memset(buffer.pos, 0, sizeof(SkScalar) * glyphCount * 2);
sk_sp<SkTextBlob> blob(builder.make());
REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
}
}
