void onDraw(int loops, SkCanvas* canvas) override {
SkFont font;
font.setEdging(SkFont::Edging::kAntiAlias);
const uint16_t* array = gUniqueGlyphIDs;
while (*array != gUniqueGlyphIDs_Sentinel) {
int count = count_glyphs(array);
for (int i = 0; i < loops; ++i) {
(void)font.measureText(array, count * sizeof(uint16_t), SkTextEncoding::kGlyphID);
}
array += count + 1; // skip the sentinel
}
}
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);
}
void drawText(SkCanvas* canvas) {
static const int kSizes[] = {8, 9, 10, 11, 12, 13, 18, 20, 25};
static const SkString kTexts[] = {SkString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"),
SkString("abcdefghijklmnopqrstuvwxyz"),
SkString("0123456789"),
SkString("!@#$%^&*()<>[]{}")};
SkFont font;
font.setEdging(SkFont::Edging::kAntiAlias);
font.setSubpixel(true);
static const SkScalar kSubPixelInc = 1 / 2.f;
SkScalar x = 0;
SkScalar y = 10;
SkScalar subpixelX = 0;
SkScalar subpixelY = 0;
bool offsetX = true;
if (GrContextOptions::Enable::kYes == fAllowMultipleTextures) {
canvas->scale(10, 10);
}
do {
for (auto s : kSizes) {
auto size = 2 * s;
font.setSize(size);
for (const auto& typeface : fTypefaces) {
font.setTypeface(typeface);
for (const auto& text : kTexts) {
x = size + draw_string(canvas, text, x + subpixelX, y + subpixelY, font);
x = SkScalarCeilToScalar(x);
if (x + 100 > kSize) {
x = 0;
y += SkScalarCeilToScalar(size + 3);
if (y > kSize) {
return;
}
}
}
}
(offsetX ? subpixelX : subpixelY) += kSubPixelInc;
offsetX = !offsetX;
}
} while (true);
}
// Verify that text-related properties are captured in run paints.
static void TestPaintProps(skiatest::Reporter* reporter) {
SkFont font;
// Kitchen sink font.
font.setSize(42);
font.setScaleX(4.2f);
font.setTypeface(ToolUtils::create_portable_typeface());
font.setSkewX(0.42f);
font.setHinting(SkFontHinting::kFull);
font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
font.setEmbolden(true);
font.setLinearMetrics(true);
font.setSubpixel(true);
font.setEmbeddedBitmaps(true);
font.setForceAutoHinting(true);
// Ensure we didn't pick default values by mistake.
SkFont defaultFont;
REPORTER_ASSERT(reporter, defaultFont.getSize() != font.getSize());
REPORTER_ASSERT(reporter, defaultFont.getScaleX() != font.getScaleX());
REPORTER_ASSERT(reporter, defaultFont.getTypefaceOrDefault() != font.getTypefaceOrDefault());
REPORTER_ASSERT(reporter, defaultFont.getSkewX() != font.getSkewX());
REPORTER_ASSERT(reporter, defaultFont.getHinting() != font.getHinting());
REPORTER_ASSERT(reporter, defaultFont.getEdging() != font.getEdging());
REPORTER_ASSERT(reporter, defaultFont.isEmbolden() != font.isEmbolden());
REPORTER_ASSERT(reporter, defaultFont.isLinearMetrics() != font.isLinearMetrics());
REPORTER_ASSERT(reporter, defaultFont.isSubpixel() != font.isSubpixel());
REPORTER_ASSERT(reporter,
defaultFont.isEmbeddedBitmaps() != font.isEmbeddedBitmaps());
REPORTER_ASSERT(reporter, defaultFont.isForceAutoHinting() != font.isForceAutoHinting());
SkTextBlobBuilder builder;
AddRun(font, 1, SkTextBlobRunIterator::kDefault_Positioning, SkPoint::Make(0, 0), builder);
AddRun(font, 1, SkTextBlobRunIterator::kHorizontal_Positioning, SkPoint::Make(0, 0),
builder);
AddRun(font, 1, SkTextBlobRunIterator::kFull_Positioning, SkPoint::Make(0, 0), builder);
sk_sp<SkTextBlob> blob(builder.make());
SkTextBlobRunIterator it(blob.get());
while (!it.done()) {
REPORTER_ASSERT(reporter, it.font() == font);
it.next();
}
}
static void draw_scene(SkCanvas* canvas, const SkHighContrastConfig& config) {
SkRect bounds = SkRect::MakeLTRB(0.0f, 0.0f, 1.0f, 1.0f);
SkPaint xferPaint;
xferPaint.setColorFilter(SkHighContrastFilter::Make(config));
canvas->saveLayer(&bounds, &xferPaint);
SkPaint paint;
bounds = SkRect::MakeLTRB(0.1f, 0.2f, 0.9f, 0.4f);
paint.setARGB(0xff, 0x66, 0x11, 0x11);
canvas->drawRect(bounds, paint);
SkFont font;
font.setSize(0.15f);
font.setEdging(SkFont::Edging::kAlias);
paint.setARGB(0xff, 0xbb, 0x77, 0x77);
canvas->drawString("A", 0.15f, 0.35f, font, paint);
bounds = SkRect::MakeLTRB(0.1f, 0.8f, 0.9f, 1.0f);
paint.setARGB(0xff, 0xcc, 0xcc, 0xff);
canvas->drawRect(bounds, paint);
paint.setARGB(0xff, 0x88, 0x88, 0xbb);
canvas->drawString("Z", 0.75f, 0.95f, font, paint);
bounds = SkRect::MakeLTRB(0.1f, 0.4f, 0.9f, 0.6f);
SkPoint pts[] = { { 0, 0 }, { 1, 0 } };
SkColor colors[] = { SK_ColorWHITE, SK_ColorBLACK };
SkScalar pos[] = { 0.2f, 0.8f };
paint.setShader(SkGradientShader::MakeLinear(
pts, colors, pos,
SK_ARRAY_COUNT(colors), SkTileMode::kClamp));
canvas->drawRect(bounds, paint);
bounds = SkRect::MakeLTRB(0.1f, 0.6f, 0.9f, 0.8f);
SkColor colors2[] = { SK_ColorGREEN, SK_ColorWHITE };
paint.setShader(SkGradientShader::MakeLinear(
pts, colors2, pos,
SK_ARRAY_COUNT(colors2), SkTileMode::kClamp));
canvas->drawRect(bounds, paint);
canvas->restore();
}
static void draw_label(SkCanvas* canvas, const SkHighContrastConfig& config) {
char labelBuffer[256];
const char* invertStr =
(config.fInvertStyle == InvertStyle::kInvertBrightness ?
"InvBrightness" :
(config.fInvertStyle == InvertStyle::kInvertLightness ?
"InvLightness" : "NoInvert"));
snprintf(labelBuffer, sizeof(labelBuffer), "%s%s contrast=%.1f",
config.fGrayscale ? "Gray " : "",
invertStr,
config.fContrast);
SkFont font;
font.setTypeface(ToolUtils::create_portable_typeface());
font.setSize(0.05f);
font.setEdging(SkFont::Edging::kAlias);
size_t len = strlen(labelBuffer);
SkScalar width = font.measureText(labelBuffer, len, SkTextEncoding::kUTF8);
canvas->drawSimpleText(labelBuffer, len, SkTextEncoding::kUTF8, 0.5f - width / 2, 0.16f, font, SkPaint());
}
sk_sp<SkTextBlob> makeBlob(unsigned blobIndex) {
SkTextBlobBuilder builder;
SkFont font;
font.setSubpixel(true);
font.setEdging(SkFont::Edging::kAntiAlias);
font.setTypeface(fTypeface);
for (unsigned l = 0; l < SK_ARRAY_COUNT(blobConfigs[blobIndex]); ++l) {
unsigned currentGlyph = 0;
for (unsigned c = 0; c < SK_ARRAY_COUNT(blobConfigs[blobIndex][l]); ++c) {
const BlobCfg* cfg = &blobConfigs[blobIndex][l][c];
unsigned count = cfg->count;
if (count > fGlyphs.count() - currentGlyph) {
count = fGlyphs.count() - currentGlyph;
}
if (0 == count) {
break;
}
font.setSize(kFontSize * cfg->scale);
const SkScalar advanceX = font.getSize() * 0.85f;
const SkScalar advanceY = font.getSize() * 1.5f;
SkPoint offset = SkPoint::Make(currentGlyph * advanceX + c * advanceX,
advanceY * l);
switch (cfg->pos) {
case kDefault_Pos: {
const SkTextBlobBuilder::RunBuffer& buf = builder.allocRun(font, count,
offset.x(),
offset.y());
memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t));
} break;
case kScalar_Pos: {
const SkTextBlobBuilder::RunBuffer& buf = builder.allocRunPosH(font, count,
offset.y());
SkTDArray<SkScalar> pos;
for (unsigned i = 0; i < count; ++i) {
*pos.append() = offset.x() + i * advanceX;
}
memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t));
memcpy(buf.pos, pos.begin(), count * sizeof(SkScalar));
} break;
case kPoint_Pos: {
const SkTextBlobBuilder::RunBuffer& buf = builder.allocRunPos(font, count);
SkTDArray<SkScalar> pos;
for (unsigned i = 0; i < count; ++i) {
*pos.append() = offset.x() + i * advanceX;
*pos.append() = offset.y() + i * (advanceY / count);
}
memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t));
memcpy(buf.pos, pos.begin(), count * sizeof(SkScalar) * 2);
} break;
default:
SK_ABORT("unhandled pos value");
}
currentGlyph += count;
}
}
return builder.make();
}
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
if (!fAnim) {
*errorMsg = "No animation.";
return DrawResult::kFail;
}
SkMatrix44 camera,
perspective,
mv;
SkMatrix viewport;
{
float w = this->width();
float h = this->height();
float s = std::min(w, h);
viewport.setTranslate(1, -1);
viewport.postScale(s/2, -s/2);
draw_viewport(canvas, viewport);
}
Sk3Perspective(&perspective, fNear, fFar, fAngle);
Sk3LookAt(&camera, fEye, fCOA, fUp);
mv.postConcat(camera);
mv.postConcat(perspective);
SkPoint pts[8];
Sk3MapPts(pts, mv, fP3, 8);
viewport.mapPoints(pts, 8);
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
SkFont font;
font.setEdging(SkFont::Edging::kAlias);
SkPath cube;
cube.moveTo(pts[0]);
cube.lineTo(pts[2]);
cube.lineTo(pts[6]);
cube.lineTo(pts[4]);
cube.close();
cube.moveTo(pts[1]);
cube.lineTo(pts[3]);
cube.lineTo(pts[7]);
cube.lineTo(pts[5]);
cube.close();
cube.moveTo(pts[0]); cube.lineTo(pts[1]);
cube.moveTo(pts[2]); cube.lineTo(pts[3]);
cube.moveTo(pts[4]); cube.lineTo(pts[5]);
cube.moveTo(pts[6]); cube.lineTo(pts[7]);
canvas->drawPath(cube, paint);
{
SkPoint3 src[4] = {
{ 0, 0, 0 }, { 2, 0, 0 }, { 0, 2, 0 }, { 0, 0, 2 },
};
SkPoint dst[4];
mv.setConcat(perspective, camera);
Sk3MapPts(dst, mv, src, 4);
viewport.mapPoints(dst, 4);
const char* str[3] = { "X", "Y", "Z" };
for (int i = 1; i <= 3; ++i) {
canvas->drawLine(dst[0], dst[i], paint);
}
for (int i = 0; i < 3; ++i) {
canvas->drawString(str[i], dst[i + 1].fX, dst[i + 1].fY, font, paint);
}
}
fAnim->seek(fAnimT);
draw_skia(canvas, mv, viewport, fAnim.get());
return DrawResult::kOk;
}
