Glyph SimpleFontData::glyphForCharacter(UChar32 codepoint) const {
uint16_t glyph;
SkTypeface* typeface = platformData().typeface();
RELEASE_ASSERT(typeface);
typeface->charsToGlyphs(&codepoint, SkTypeface::kUTF32_Encoding, &glyph, 1);
return glyph;
}
bool SimpleFontData::fillGlyphPage(GlyphPage* pageToFill,
unsigned offset,
unsigned length,
UChar* buffer,
unsigned bufferLength) const {
if (U16_IS_LEAD(buffer[bufferLength - 1])) {
SkDebugf("%s last char is high-surrogate", __FUNCTION__);
return false;
}
SkAutoSTMalloc<GlyphPage::size, uint16_t> glyphStorage(length);
uint16_t* glyphs = glyphStorage.get();
SkTypeface* typeface = platformData().typeface();
typeface->charsToGlyphs(buffer, SkTypeface::kUTF16_Encoding, glyphs, length);
bool haveGlyphs = false;
for (unsigned i = 0; i < length; i++) {
if (glyphs[i]) {
pageToFill->setGlyphDataForIndex(offset + i, glyphs[i], this);
haveGlyphs = true;
}
}
return haveGlyphs;
}
bool SimpleFontData::fillGlyphPage(GlyphPage* pageToFill, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength) const
{
if (U16_IS_LEAD(buffer[bufferLength-1])) {
DLOG(ERROR) << "Last UTF-16 code unit is high-surrogate.";
return false;
}
SkTypeface* typeface = platformData().typeface();
if (!typeface) {
DLOG(ERROR) << "fillGlyphPage called on an empty Skia typeface.";
return false;
}
SkAutoSTMalloc<GlyphPage::size, uint16_t> glyphStorage(length);
uint16_t* glyphs = glyphStorage.get();
typeface->charsToGlyphs(buffer, SkTypeface::kUTF16_Encoding, glyphs, length);
bool haveGlyphs = false;
for (unsigned i = 0; i < length; i++) {
if (glyphs[i]) {
pageToFill->setGlyphDataForIndex(offset + i, glyphs[i], this);
haveGlyphs = true;
}
}
return haveGlyphs;
}
static void charsToGlyphsNull_proc(int loops, const SkPaint& paint, const void* text,
size_t len, int glyphCount) {
SkTypeface::Encoding encoding = paint2Encoding(paint);
SkTypeface* face = paint.getTypeface();
for (int i = 0; i < loops; ++i) {
face->charsToGlyphs(text, encoding, NULL, glyphCount);
}
}
DEF_TEST(Paint_cmap, reporter) {
// need to implement charsToGlyphs on other backends (e.g. linux, win)
// before we can run this tests everywhere
return;
static const int NGLYPHS = 64;
SkUnichar src[NGLYPHS];
SkUnichar dst[NGLYPHS]; // used for utf8, utf16, utf32 storage
static const struct {
size_t (*fSeedTextProc)(const SkUnichar[], void* dst, int count);
SkPaint::TextEncoding fEncoding;
} gRec[] = {
{ uni_to_utf8, SkPaint::kUTF8_TextEncoding },
{ uni_to_utf16, SkPaint::kUTF16_TextEncoding },
{ uni_to_utf32, SkPaint::kUTF32_TextEncoding },
};
SkRandom rand;
SkPaint paint;
paint.setTypeface(SkTypeface::RefDefault())->unref();
SkTypeface* face = paint.getTypeface();
for (int i = 0; i < 1000; ++i) {
// generate some random text
for (int j = 0; j < NGLYPHS; ++j) {
src[j] = ' ' + j;
}
// inject some random chars, to sometimes abort early
src[rand.nextU() & 63] = rand.nextU() & 0xFFF;
for (size_t k = 0; k < SK_ARRAY_COUNT(gRec); ++k) {
paint.setTextEncoding(gRec[k].fEncoding);
size_t len = gRec[k].fSeedTextProc(src, dst, NGLYPHS);
uint16_t glyphs0[NGLYPHS], glyphs1[NGLYPHS];
bool contains = paint.containsText(dst, len);
int nglyphs = paint.textToGlyphs(dst, len, glyphs0);
int first = face->charsToGlyphs(dst, paint2encoding(paint), glyphs1, NGLYPHS);
int index = find_first_zero(glyphs1, NGLYPHS);
REPORTER_ASSERT(reporter, NGLYPHS == nglyphs);
REPORTER_ASSERT(reporter, index == first);
REPORTER_ASSERT(reporter, 0 == memcmp(glyphs0, glyphs1, NGLYPHS * sizeof(uint16_t)));
if (contains) {
REPORTER_ASSERT(reporter, NGLYPHS == first);
} else {
REPORTER_ASSERT(reporter, NGLYPHS > first);
}
}
}
}
static void charsToGlyphs_proc(int loops, const SkPaint& paint, const void* text,
size_t len, int glyphCount) {
SkTypeface::Encoding encoding = paint2Encoding(paint);
uint16_t glyphs[NGLYPHS];
SkASSERT(glyphCount <= NGLYPHS);
SkTypeface* face = paint.getTypeface();
for (int i = 0; i < loops; ++i) {
face->charsToGlyphs(text, encoding, glyphs, glyphCount);
}
}
