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 setFont(const char * pFontName = NULL, int nSize = 0)
{
bool bRet = false;
if (m_pPaint)
{
delete m_pPaint;
m_pPaint = NULL;
}
do
{
/* init paint */
m_pPaint = new SkPaint();
CC_BREAK_IF(! m_pPaint);
m_pPaint->setColor(SK_ColorWHITE);
m_pPaint->setTextSize(nSize);
/* create font */
SkTypeface *pTypeFace = SkTypeface::CreateFromName(pFontName, SkTypeface::kNormal);
if (! pTypeFace)
{
CC_SAFE_DELETE(m_pPaint);
break;
}
m_pPaint->setTypeface( pTypeFace );
/* can not unref, I don't know why. It may be memory leak, but how to avoid? */
pTypeFace->unref();
bRet = true;
} while (0);
return bRet;
}
GrPathRange* GrStencilAndCoverTextContext::TextRun::createGlyphs(GrContext* ctx,
SkGlyphCache* glyphCache) {
SkTypeface* typeface = fUsingRawGlyphPaths ? fFont.getTypeface()
: glyphCache->getScalerContext()->getTypeface();
const SkDescriptor* desc = fUsingRawGlyphPaths ? nullptr : &glyphCache->getDescriptor();
static const GrUniqueKey::Domain kPathGlyphDomain = GrUniqueKey::GenerateDomain();
int strokeDataCount = fStroke.computeUniqueKeyFragmentData32Cnt();
GrUniqueKey glyphKey;
GrUniqueKey::Builder builder(&glyphKey, kPathGlyphDomain, 2 + strokeDataCount);
reinterpret_cast<uint32_t&>(builder[0]) = desc ? desc->getChecksum() : 0;
reinterpret_cast<uint32_t&>(builder[1]) = typeface ? typeface->uniqueID() : 0;
if (strokeDataCount > 0) {
fStroke.asUniqueKeyFragment(&builder[2]);
}
builder.finish();
SkAutoTUnref<GrPathRange> glyphs(
static_cast<GrPathRange*>(
ctx->resourceProvider()->findAndRefResourceByUniqueKey(glyphKey)));
if (nullptr == glyphs) {
glyphs.reset(ctx->resourceProvider()->createGlyphs(typeface, desc, fStroke));
ctx->resourceProvider()->assignUniqueKeyToResource(glyphKey, glyphs);
} else {
SkASSERT(nullptr == desc || glyphs->isEqualTo(*desc));
}
return glyphs.detach();
}
static void drawKernText(SkCanvas* canvas, const void* text, size_t len,
SkScalar x, SkScalar y, const SkFont& font, const SkPaint& paint) {
SkTypeface* face = font.getTypefaceOrDefault();
if (!face) {
canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, x, y, font, paint);
return;
}
SkAutoSTMalloc<128, uint16_t> glyphStorage(len);
uint16_t* glyphs = glyphStorage.get();
int glyphCount = font.textToGlyphs(text, len, SkTextEncoding::kUTF8, glyphs, len);
if (glyphCount < 1) {
return;
}
SkAutoSTMalloc<128, int32_t> adjustmentStorage(glyphCount - 1);
int32_t* adjustments = adjustmentStorage.get();
if (!face->getKerningPairAdjustments(glyphs, glyphCount, adjustments)) {
canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, x, y, font, paint);
return;
}
SkTextBlobBuilder builder;
auto rec = builder.allocRunPos(font, glyphCount);
memcpy(rec.glyphs, glyphs, glyphCount * sizeof(SkGlyphID));
getGlyphPositions(font, glyphs, glyphCount, x, y, rec.points());
applyKerning(rec.points(), adjustments, glyphCount, font);
canvas->drawTextBlob(builder.make(), 0, 0, paint);
}
static SkScalar drawCharacter(SkCanvas* canvas, uint32_t character, SkScalar x,
SkScalar y, SkPaint& paint, SkFontMgr* fm,
const char* fontName, const char* bcp47[], int bcp47Count,
const SkFontStyle& fontStyle) {
// find typeface containing the requested character and draw it
SkString ch;
ch.appendUnichar(character);
SkTypeface* typeface = fm->matchFamilyStyleCharacter(fontName, fontStyle,
bcp47, bcp47Count, character);
SkSafeUnref(paint.setTypeface(typeface));
x = drawString(canvas, ch, x, y, paint) + 20;
if (nullptr == typeface) {
return x;
}
// repeat the process, but this time use the family name of the typeface
// from the first pass. This emulates the behavior in Blink where it
// it expects to get the same glyph when following this pattern.
SkString familyName;
typeface->getFamilyName(&familyName);
SkTypeface* typefaceCopy = fm->legacyCreateTypeface(familyName.c_str(), typeface->fontStyle());
SkSafeUnref(paint.setTypeface(typefaceCopy));
return drawString(canvas, ch, x, y, paint) + 20;
}
SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
const char familyName[],
SkTypeface::Style style) {
load_system_fonts();
SkAutoMutexAcquire ac(gFamilyMutex);
// clip to legal style bits
style = (SkTypeface::Style)(style & SkTypeface::kBoldItalic);
SkTypeface* tf = NULL;
if (NULL != familyFace) {
tf = find_typeface(familyFace, style);
} else if (NULL != familyName) {
// SkDebugf("======= familyName <%s>\n", familyName);
tf = find_typeface(familyName, style);
}
if (NULL == tf) {
tf = find_best_face(gDefaultFamily, style);
}
// we ref(), since the symantic is to return a new instance
tf->ref();
return tf;
}
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;
}
// Return the context associated with the next logical typeface, or NULL if
// there are no more entries in the fallback chain.
SkScalerContext* SkScalerContext::allocNextContext() const {
#ifdef SK_BUILD_FOR_ANDROID
SkTypeface* newFace = SkAndroidNextLogicalTypeface(fRec.fFontID,
fRec.fOrigFontID,
fPaintOptionsAndroid);
if (0 == newFace) {
return NULL;
}
SkAutoTUnref<SkTypeface> aur(newFace);
uint32_t newFontID = newFace->uniqueID();
SkOrderedWriteBuffer androidBuffer(128);
fPaintOptionsAndroid.flatten(androidBuffer);
SkAutoDescriptor ad(sizeof(fRec) + androidBuffer.size() + SkDescriptor::ComputeOverhead(2));
SkDescriptor* desc = ad.getDesc();
desc->init();
SkScalerContext::Rec* newRec =
(SkScalerContext::Rec*)desc->addEntry(kRec_SkDescriptorTag,
sizeof(fRec), &fRec);
androidBuffer.writeToMemory(desc->addEntry(kAndroidOpts_SkDescriptorTag,
androidBuffer.size(), NULL));
newRec->fFontID = newFontID;
desc->computeChecksum();
return newFace->createScalerContext(desc);
#else
return NULL;
#endif
}
SkTypeface* SkCreateTypefaceForScript(FallbackScripts script) {
if (!SkTypeface_ValidScript(script)) {
return NULL;
}
// ensure that our table is populated
initFBScriptInfo();
FBScriptInfo& scriptInfo = gFBScriptInfo[script];
// ensure the element with that index actually maps to the correct script
SkASSERT(scriptInfo.fScript == script);
// if a suitable script could not be found then return NULL
if (scriptInfo.fFontID == 0) {
return NULL;
}
SkAutoMutexAcquire ac(gFamilyHeadAndNameListMutex);
// retrieve the typeface the corresponds to this fontID
SkTypeface* tf = find_from_uniqueID(scriptInfo.fFontID);
// we ref(), since the semantic is to return a new instance
tf->ref();
return tf;
}
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;
}
SkTypeface* SkTypefaceFromPdfStandardFont(const char* fontName, bool bold, bool italic) {
SkTDict<SkPdfStandardFontEntry>& standardFontMap = getStandardFonts();
SkTypeface* typeface = NULL;
SkPdfStandardFontEntry fontData;
if (standardFontMap.find(fontName, &fontData)) {
// TODO(edisonn): How does the bold/italic specified in standard definition combines with
// the one in /font key? use OR for now.
bold = bold || fontData.fIsBold;
italic = italic || fontData.fIsItalic;
typeface = SkTypeface::CreateFromName(
fontData.fName,
SkTypeface::Style((bold ? SkTypeface::kBold : 0) |
(italic ? SkTypeface::kItalic : 0)));
} else {
typeface = SkTypeface::CreateFromName(
fontName,
SkTypeface::kNormal);
}
if (typeface) {
typeface->ref();
}
return typeface;
}
static void drawKernText(SkCanvas* canvas, const void* text, size_t len,
SkScalar x, SkScalar y, const SkPaint& paint) {
SkTypeface* face = paint.getTypeface();
if (!face) {
canvas->drawText(text, len, x, y, paint);
return;
}
SkAutoSTMalloc<128, uint16_t> glyphStorage(len);
uint16_t* glyphs = glyphStorage.get();
int glyphCount = paint.textToGlyphs(text, len, glyphs);
if (glyphCount < 1) {
return;
}
SkAutoSTMalloc<128, int32_t> adjustmentStorage(glyphCount - 1);
int32_t* adjustments = adjustmentStorage.get();
if (!face->getKerningPairAdjustments(glyphs, glyphCount, adjustments)) {
canvas->drawText(text, len, x, y, paint);
return;
}
SkPaint glyphPaint(paint);
glyphPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
SkAutoSTMalloc<128, SkPoint> posStorage(glyphCount);
SkPoint* pos = posStorage.get();
getGlyphPositions(glyphPaint, glyphs, glyphCount, x, y, pos);
applyKerning(pos, adjustments, glyphCount, glyphPaint);
canvas->drawPosText(glyphs, glyphCount * sizeof(uint16_t), pos, glyphPaint);
}
FONTDef
_DC::SelectObject(FONTDef font){
if( !context_ )
return NULL;
if (_canvas) {
LOGFONT lf;
::GetObject(font, sizeof(LOGFONT), &lf);
SkTypeface::Style style = SkTypeface::Style::kNormal;
if (lf.lfItalic) {
if (lf.lfWidth == FW_BOLD)
style = SkTypeface::Style::kBoldItalic;
else
style = SkTypeface::Style::kItalic;
}
else {
if (lf.lfWidth == FW_BOLD)
style = SkTypeface::Style::kBold;
else
style = SkTypeface::Style::kNormal;
}
SkTypeface* tf = SkTypeface::CreateFromName(lf.lfFaceName, style);
_skPaintText.setTypeface(tf);
_skPaintText.setAntiAlias(true);
_skPaintText.setTextSize(SkIntToScalar(lf.lfHeight));
_skPaintText.setTextEncoding(SkPaint::TextEncoding::kUTF8_TextEncoding);
tf->unref();
}
return (FONTDef)::SelectObject(context_, font);
}
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);
}
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription,
const AtomicString& family)
{
const char* name = 0;
CString s;
if (family.length() == 0) {
static const struct {
FontDescription::GenericFamilyType mType;
const char* mName;
} fontDescriptions[] = {
{ FontDescription::SerifFamily, "serif" },
{ FontDescription::SansSerifFamily, "sans-serif" },
{ FontDescription::MonospaceFamily, "monospace" },
{ FontDescription::CursiveFamily, "cursive" },
{ FontDescription::FantasyFamily, "fantasy" }
};
FontDescription::GenericFamilyType type = fontDescription.genericFamily();
for (unsigned i = 0; i < SK_ARRAY_COUNT(fontDescriptions); i++) {
if (type == fontDescriptions[i].mType) {
name = fontDescriptions[i].mName;
break;
}
}
// if we fall out of the loop, it's ok for name to still be 0
}
else { // convert the name to utf8
s = family.string().utf8();
name = s.data();
}
int style = SkTypeface::kNormal;
if (fontDescription.weight() >= FontWeightBold)
style |= SkTypeface::kBold;
if (fontDescription.italic())
style |= SkTypeface::kItalic;
// FIXME: This #ifdef can go away once we're firmly using the new Skia.
// During the transition, this makes the code compatible with both versions.
#ifdef SK_USE_OLD_255_TO_256
SkTypeface* tf = SkTypeface::CreateFromName(name, static_cast<SkTypeface::Style>(style));
#else
SkTypeface* tf = SkTypeface::Create(name, static_cast<SkTypeface::Style>(style));
#endif
if (!tf)
return 0;
FontPlatformData* result =
new FontPlatformData(tf,
fontDescription.computedSize(),
(style & SkTypeface::kBold) && !tf->isBold(),
(style & SkTypeface::kItalic) && !tf->isItalic());
tf->unref();
return result;
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription,
const AtomicString& family)
{
const char* name = 0;
CString s;
// If we're creating a fallback font (e.g. "-webkit-monospace"), convert the name into
// the fallback name (like "monospace") that fontconfig understands.
if (!family.length() || family.startsWith("-webkit-")) {
static const struct {
FontDescription::GenericFamilyType mType;
const char* mName;
} fontDescriptions[] = {
{ FontDescription::SerifFamily, "serif" },
{ FontDescription::SansSerifFamily, "sans-serif" },
{ FontDescription::MonospaceFamily, "monospace" },
{ FontDescription::CursiveFamily, "cursive" },
{ FontDescription::FantasyFamily, "fantasy" }
};
FontDescription::GenericFamilyType type = fontDescription.genericFamily();
for (unsigned i = 0; i < SK_ARRAY_COUNT(fontDescriptions); i++) {
if (type == fontDescriptions[i].mType) {
name = fontDescriptions[i].mName;
break;
}
}
if (!name)
name = "";
} else {
// convert the name to utf8
s = family.string().utf8();
name = s.data();
}
int style = SkTypeface::kNormal;
if (fontDescription.weight() >= FontWeightBold)
style |= SkTypeface::kBold;
if (fontDescription.italic())
style |= SkTypeface::kItalic;
SkTypeface* tf = SkTypeface::CreateFromName(name, static_cast<SkTypeface::Style>(style));
if (!tf)
return 0;
FontPlatformData* result =
new FontPlatformData(tf,
name,
fontDescription.computedSize(),
(style & SkTypeface::kBold) && !tf->isBold(),
(style & SkTypeface::kItalic) && !tf->isItalic(),
fontDescription.orientation(),
fontDescription.textOrientation());
tf->unref();
return result;
}
ACanvasSkia::~ACanvasSkia()
{
for(std::map<AString,SkTypeface*>::iterator it=m_aFontType.begin();it!=m_aFontType.end();it++)
{
SkTypeface* p = it->second;
p->unref();
}
m_aFontType.clear();
Free();
}
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);
}
}
}
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family)
{
char* storage = 0;
const char* name = 0;
if (family.length() == 0) {
static const struct {
FontDescription::GenericFamilyType mType;
const char* mName;
} gNames[] = {
{ FontDescription::SerifFamily, "serif" },
{ FontDescription::SansSerifFamily, "sans-serif" },
{ FontDescription::MonospaceFamily, "monospace" },
{ FontDescription::CursiveFamily, "cursive" },
{ FontDescription::FantasyFamily, "fantasy" }
};
FontDescription::GenericFamilyType type = fontDescription.genericFamily();
for (unsigned i = 0; i < SK_ARRAY_COUNT(gNames); i++)
{
if (type == gNames[i].mType)
{
name = gNames[i].mName;
break;
}
}
// if we fall out of the loop, its ok for name to still be 0
}
else { // convert the name to utf8
storage = AtomicStringToUTF8String(family);
name = storage;
}
int style = SkTypeface::kNormal;
if (fontDescription.weight() >= FontWeightBold)
style |= SkTypeface::kBold;
if (fontDescription.italic())
style |= SkTypeface::kItalic;
SkTypeface* tf = SkTypeface::CreateFromName(name, (SkTypeface::Style)style);
if (!tf)
return 0;
FontPlatformData* result = new FontPlatformData(tf,
name,
fontDescription.computedSize(),
(style & SkTypeface::kBold) && !tf->isBold(),
(style & SkTypeface::kItalic) && !tf->isItalic());
tf->unref();
sk_free(storage);
return result;
}
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);
}
}
/**
* This guy is public. It first searches the cache, and if a match is not found,
* it creates a new face.
*/
SkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT& origLF) {
LOGFONT lf = origLF;
make_canonical(&lf);
SkTypeface* face = SkTypefaceCache::FindByProc(FindByLogFont, &lf);
if (face) {
face->ref();
} else {
face = LogFontTypeface::Create(lf);
SkTypefaceCache::Add(face, get_style(lf));
}
return face;
}
SkTypeface* SkCreateTypefaceFromCairoFont(cairo_font_face_t* fontFace, const SkFontStyle& style, bool isFixedWidth)
{
SkTypeface* typeface = reinterpret_cast<SkTypeface*>(cairo_font_face_get_user_data(fontFace, &kSkTypefaceKey));
if (typeface) {
typeface->ref();
} else {
typeface = SkCairoFTTypeface::CreateTypeface(fontFace, style, isFixedWidth);
SkTypefaceCache::Add(typeface, style);
}
return typeface;
}
/* Returns the matching typeface, or NULL. If a typeface is found, its refcnt
is not modified.
*/
static SkTypeface* find_from_uniqueID(uint32_t uniqueID) {
FamilyRec* curr = gFamilyHead;
while (curr != NULL) {
for (int i = 0; i < 4; i++) {
SkTypeface* face = curr->fFaces[i];
if (face != NULL && face->uniqueID() == uniqueID) {
return face;
}
}
curr = curr->fNext;
}
return NULL;
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family)
{
char* storage = 0;
const char* name = 0;
FontPlatformData* result = 0;
if (family.length()) {
storage = AtomicStringToUTF8String(family);
name = storage;
} else
name = getFallbackFontName(fontDescription);
int style = SkTypeface::kNormal;
#ifndef FONT_SOFTWARE_RENDER
if (fontDescription.weight() >= FontWeightBold)
style |= SkTypeface::kBold;
if (fontDescription.italic())
style |= SkTypeface::kItalic;
#endif
// CreateFromName always returns a typeface, falling back to a default font
// if the one requested is not found. Calling Equal() with a null pointer
// serves to compare the returned font against the default, with the caveat
// that the default is always of normal style. If we detect the default, we
// ignore it and allow WebCore to give us the next font on the CSS fallback
// list. The only exception is if the family name is a commonly used generic
// family, as when called by getSimilarFontPlatformData() and
// getLastResortFallbackFont(). In this case, the default font is an
// acceptable result.
SkTypeface* tf = SkTypeface::CreateFromName(name, SkTypeface::kNormal);
if (!SkTypeface::Equal(tf, 0) || isFallbackFamily(family.string())) {
// We had to use normal styling to see if this was a default font. If
// we need bold or italic, replace with the corrected typeface.
if (style != SkTypeface::kNormal) {
tf->unref();
tf = SkTypeface::CreateFromName(name, (SkTypeface::Style)style);
}
result = new FontPlatformData(tf, fontDescription.computedSize(),
(style & SkTypeface::kBold),
(style & SkTypeface::kItalic) && !tf->isItalic(),
fontDescription.orientation(),
fontDescription.textOrientation());
}
tf->unref();
sk_free(storage);
return result;
}
DEF_TEST(FontHostStream, reporter) {
{
SkPaint paint;
paint.setColor(SK_ColorGRAY);
paint.setTextSize(SkIntToScalar(30));
SkTypeface* fTypeface = SkTypeface::CreateFromName("Georgia",
SkTypeface::kNormal);
SkSafeUnref(paint.setTypeface(fTypeface));
SkIRect origRect = SkIRect::MakeWH(64, 64);
SkBitmap origBitmap;
create(&origBitmap, origRect);
SkCanvas origCanvas(origBitmap);
SkIRect streamRect = SkIRect::MakeWH(64, 64);
SkBitmap streamBitmap;
create(&streamBitmap, streamRect);
SkCanvas streamCanvas(streamBitmap);
SkPoint point = SkPoint::Make(24, 32);
// Test: origTypeface and streamTypeface from orig data draw the same
drawBG(&origCanvas);
origCanvas.drawText("A", 1, point.fX, point.fY, paint);
SkTypeface* origTypeface = paint.getTypeface();
SkAutoTUnref<SkTypeface> aur;
if (NULL == origTypeface) {
origTypeface = aur.reset(SkTypeface::RefDefault());
}
int ttcIndex;
SkAutoTDelete<SkStreamAsset> fontData(origTypeface->openStream(&ttcIndex));
SkTypeface* streamTypeface = SkTypeface::CreateFromStream(fontData.detach());
SkFontDescriptor desc;
bool isLocalStream = false;
streamTypeface->getFontDescriptor(&desc, &isLocalStream);
REPORTER_ASSERT(reporter, isLocalStream);
SkSafeUnref(paint.setTypeface(streamTypeface));
drawBG(&streamCanvas);
streamCanvas.drawPosText("A", 1, &point, paint);
REPORTER_ASSERT(reporter,
compare(origBitmap, origRect, streamBitmap, streamRect));
}
//Make sure the typeface is deleted and removed.
SkGraphics::PurgeFontCache();
}
GlyphGenerator(const SkTypeface& typeface, const SkScalerContextEffects& effects,
const SkDescriptor& desc)
: fScalerContext(typeface.createScalerContext(effects, &desc))
#ifdef SK_DEBUG
, fDesc(desc.copy())
#endif
{}
std::unique_ptr<SkScalerContext> SkGlyphCache::CreateScalerContext(
const SkDescriptor& desc,
const SkScalerContextEffects& effects,
const SkTypeface& typeface) {
auto scaler = typeface.createScalerContext(effects, &desc, true /* can fail */);
// Check if we can create a scaler-context before creating the glyphcache.
// If not, we may have exhausted OS/font resources, so try purging the
// cache once and try again
// pass true the first time, to notice if the scalercontext failed,
if (scaler == nullptr) {
get_globals().purgeAll();
scaler = typeface.createScalerContext(effects, &desc, false /* must succeed */);
}
return scaler;
}
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family)
{
const char* name = 0;
// If a fallback font is being created (e.g. "-webkit-monospace"), convert
// it in to the fallback name (e.g. "monospace").
if (!family.length() || family.startsWith("-webkit-"))
name = getFallbackFontName(fontDescription);
else
name = family.string().utf8().data();
int style = SkTypeface::kNormal;
if (fontDescription.weight() >= FontWeightBold)
style |= SkTypeface::kBold;
if (fontDescription.italic())
style |= SkTypeface::kItalic;
SkTypeface* typeface = SkTypeface::CreateFromName(name, SkTypeface::kNormal);
FontPlatformData* result = 0;
// CreateFromName always returns a typeface, falling back to a default font
// if the one requested could not be found. Calling Equal() with a null
// pointer will compare the returned font against the default, with the
// caveat that the default is always of normal style. When that happens,
// ignore the default font and allow WebCore to provide the next font on the
// CSS fallback list. The only exception to this occurs when the family name
// is a commonly used generic family, which is the case when called by
// getSimilarFontPlatformData() or getLastResortFallbackFont(). In that case
// the default font is an acceptable result.
if (!SkTypeface::Equal(typeface, 0) || isFallbackFamily(family.string())) {
if (style != SkTypeface::kNormal) {
typeface->unref();
typeface = SkTypeface::CreateFromName(name, static_cast<SkTypeface::Style>(style));
}
result = new FontPlatformData(typeface, name, fontDescription.computedSize(),
(style & SkTypeface::kBold) && !typeface->isBold(),
(style & SkTypeface::kItalic) && !typeface->isItalic(),
fontDescription.orientation(),
fontDescription.textOrientation());
}
typeface->unref();
return result;
}
SkTypeface* SkCreateFallbackTypefaceForChar(SkUnichar uni,
SkTypeface::Style style) {
{
SkAutoMutexAcquire ac(gFamilyHeadAndNameListMutex);
load_system_fonts();
}
SkTypeface* tf = findFallbackTypefaceForChar(uni);
if (!tf) {
return NULL;
}
SkAutoMutexAcquire ac(gFamilyHeadAndNameListMutex);
tf = find_typeface(tf, style);
// we ref(), since the semantic is to return a new instance
tf->ref();
return tf;
}
GlyphGenerator(const SkTypeface& typeface, const SkDescriptor& desc)
: fScalerContext(typeface.createScalerContext(&desc))
#ifdef SK_DEBUG
, fDesc(desc.copy())
#endif
{
fFlipMatrix.setScale(1, -1);
}
