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();
}
void SkPDFType0Font::getFontSubset(SkPDFCanon* canon) {
const SkAdvancedTypefaceMetrics* metricsPtr =
SkPDFFont::GetMetrics(this->typeface(), canon);
SkASSERT(metricsPtr);
if (!metricsPtr) { return; }
const SkAdvancedTypefaceMetrics& metrics = *metricsPtr;
SkASSERT(can_embed(metrics));
SkAdvancedTypefaceMetrics::FontType type = this->getType();
SkTypeface* face = this->typeface();
SkASSERT(face);
auto descriptor = sk_make_sp<SkPDFDict>("FontDescriptor");
uint16_t emSize = SkToU16(this->typeface()->getUnitsPerEm());
add_common_font_descriptor_entries(descriptor.get(), metrics, emSize , 0);
int ttcIndex;
std::unique_ptr<SkStreamAsset> fontAsset(face->openStream(&ttcIndex));
size_t fontSize = fontAsset ? fontAsset->getLength() : 0;
if (0 == fontSize) {
SkDebugf("Error: (SkTypeface)(%p)::openStream() returned "
"empty stream (%p) when identified as kType1CID_Font "
"or kTrueType_Font.\n", face, fontAsset.get());
} else {
switch (type) {
case SkAdvancedTypefaceMetrics::kTrueType_Font: {
#ifdef SK_PDF_USE_SFNTLY
if (!SkToBool(metrics.fFlags &
SkAdvancedTypefaceMetrics::kNotSubsettable_FontFlag)) {
sk_sp<SkPDFStream> subsetStream = get_subset_font_stream(
std::move(fontAsset), this->glyphUsage(),
metrics.fFontName.c_str(), ttcIndex);
if (subsetStream) {
descriptor->insertObjRef("FontFile2", std::move(subsetStream));
break;
}
// If subsetting fails, fall back to original font data.
fontAsset.reset(face->openStream(&ttcIndex));
SkASSERT(fontAsset);
SkASSERT(fontAsset->getLength() == fontSize);
if (!fontAsset || fontAsset->getLength() == 0) { break; }
}
#endif // SK_PDF_USE_SFNTLY
auto fontStream = sk_make_sp<SkPDFSharedStream>(std::move(fontAsset));
fontStream->dict()->insertInt("Length1", fontSize);
descriptor->insertObjRef("FontFile2", std::move(fontStream));
break;
}
case SkAdvancedTypefaceMetrics::kType1CID_Font: {
auto fontStream = sk_make_sp<SkPDFSharedStream>(std::move(fontAsset));
fontStream->dict()->insertName("Subtype", "CIDFontType0C");
descriptor->insertObjRef("FontFile3", std::move(fontStream));
break;
}
default:
SkASSERT(false);
}
}
auto newCIDFont = sk_make_sp<SkPDFDict>("Font");
newCIDFont->insertObjRef("FontDescriptor", std::move(descriptor));
newCIDFont->insertName("BaseFont", metrics.fPostScriptName);
switch (type) {
case SkAdvancedTypefaceMetrics::kType1CID_Font:
newCIDFont->insertName("Subtype", "CIDFontType0");
break;
case SkAdvancedTypefaceMetrics::kTrueType_Font:
newCIDFont->insertName("Subtype", "CIDFontType2");
newCIDFont->insertName("CIDToGIDMap", "Identity");
break;
default:
SkASSERT(false);
}
auto sysInfo = sk_make_sp<SkPDFDict>();
sysInfo->insertString("Registry", "Adobe");
sysInfo->insertString("Ordering", "Identity");
sysInfo->insertInt("Supplement", 0);
newCIDFont->insertObject("CIDSystemInfo", std::move(sysInfo));
int16_t defaultWidth = 0;
{
int emSize;
auto glyphCache = SkPDFFont::MakeVectorCache(face, &emSize);
sk_sp<SkPDFArray> widths = SkPDFMakeCIDGlyphWidthsArray(
glyphCache.get(), &this->glyphUsage(), SkToS16(emSize), &defaultWidth);
if (widths && widths->size() > 0) {
newCIDFont->insertObject("W", std::move(widths));
}
newCIDFont->insertScalar(
"DW", scaleFromFontUnits(defaultWidth, SkToS16(emSize)));
}
////////////////////////////////////////////////////////////////////////////
this->insertName("Subtype", "Type0");
this->insertName("BaseFont", metrics.fPostScriptName);
this->insertName("Encoding", "Identity-H");
auto descendantFonts = sk_make_sp<SkPDFArray>();
descendantFonts->appendObjRef(std::move(newCIDFont));
this->insertObject("DescendantFonts", std::move(descendantFonts));
if (metrics.fGlyphToUnicode.count() > 0) {
this->insertObjRef("ToUnicode",
SkPDFMakeToUnicodeCmap(metrics.fGlyphToUnicode,
&this->glyphUsage(),
multiByteGlyphs(),
firstGlyphID(),
lastGlyphID()));
}
SkDEBUGCODE(fPopulated = true);
return;
}