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Improve generation of glyph advance array.

Browse Source 
Review URL: http://codereview.appspot.com/4830068

git-svn-id: http://skia.googlecode.com/svn/trunk@2126 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
vandebo@chromium.org 2011-08-16 22:45:43 +00:00
parent 8b4a64d318
commit e7f3300f42
13 changed files with 198 additions and 93 deletions
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11
include/core/SkAdvancedTypefaceMetrics.h
View File

@ -132,10 +132,21 @@ void finishRange(
typename SkAdvancedTypefaceMetrics::AdvanceMetric<Data>::MetricType
type);
/** Retrieve advance data for glyphs. Used by the PDF backend. It calls
underlying platform dependent API getAdvance to acquire the data.
@param num_glyphs Total number of glyphs in the given font.
@param glyphIDs For per-glyph info, specify subset of the font by
giving glyph ids. Each integer represents a glyph
id. Passing NULL means all glyphs in the font.
@param glyphIDsCount Number of elements in subsetGlyphIds. Ignored if
glyphIDs is NULL.
*/
template <typename Data, typename FontHandle>
SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* getAdvanceData(
FontHandle fontHandle,
int num_glyphs,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount,
bool (*getAdvance)(FontHandle fontHandle, int gId, Data* data));
} // namespace skia_advanced_typeface_metrics_utils

30
include/core/SkFontHost.h
View File

@ -24,7 +24,7 @@ typedef uint32_t SkFontTableTag;
This class is ported to each environment. It is responsible for bridging
the gap between the (sort of) abstract class SkTypeface and the
platform-specific implementation that provides access to font files.
One basic task is for each create (subclass of) SkTypeface, the FontHost is
resonsible for assigning a uniqueID. The ID should be unique for the
underlying font file/data, not unique per typeface instance. Thus it is
@ -36,7 +36,7 @@ typedef uint32_t SkFontTableTag;
returned). Either way, the fontID for those instance(s) will be the same.
In addition, the fontID should never be set to 0. That value is used as a
sentinel to indicate no-font-id.
The major aspects are:
1) Given either a name/style, return a subclass of SkTypeface that
references the closest matching font available on the host system.
@ -65,17 +65,17 @@ public:
/** Return a new typeface given the data buffer. If the data does not
represent a valid font, returns null.
If a typeface instance is returned, the caller is responsible for
calling unref() on the typeface when they are finished with it.
The returned typeface may or may not have called ref() on the stream
parameter. If the typeface has not called ref(), then it may have made
a copy of the releveant data. In either case, the caller is still
responsible for its refcnt ownership of the stream.
responsible for its refcnt ownership of the stream.
*/
static SkTypeface* CreateTypefaceFromStream(SkStream*);
/** Return a new typeface from the specified file path. If the file does not
represent a valid font, this returns null. If a typeface is returned,
the caller is responsible for calling unref() when it is no longer used.
@ -83,13 +83,13 @@ public:
static SkTypeface* CreateTypefaceFromFile(const char path[]);
///////////////////////////////////////////////////////////////////////////
/** Returns true if the specified unique ID matches an existing font.
Returning false is similar to calling OpenStream with an invalid ID,
which will return NULL in that case.
*/
static bool ValidFontID(SkFontID uniqueID);
/** Return a new stream to read the font data, or null if the uniqueID does
not match an existing typeface. .The caller must call stream->unref()
when it is finished reading the data.
@ -138,7 +138,7 @@ public:
static SkTypeface* Deserialize(SkStream*);
///////////////////////////////////////////////////////////////////////////
/** Return a subclass of SkScalarContext
*/
static SkScalerContext* CreateScalerContext(const SkDescriptor* desc);
@ -181,10 +181,17 @@ public:
names, etc.) should be populated.
@return The returned object has already been referenced. NULL is
returned if the font is not found.
@param glyphIDs For per-glyph info, specify subset of the font by
giving glyph ids. Each integer represents a glyph
id. Passing NULL means all glyphs in the font.
@param glyphIDsCount Number of elements in subsetGlyphIds. Ignored if
glyphIDs is NULL.
*/
static SkAdvancedTypefaceMetrics* GetAdvancedTypefaceMetrics(
SkFontID fontID,
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo);
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount);
/** Return the number of tables in the font
*/
@ -199,7 +206,7 @@ public:
/** Given a table tag, return the size of its contents, or 0 if not present
*/
static size_t GetTableSize(SkFontID, SkFontTableTag);
/** Copy the contents of a table into data (allocated by the caller). Note
that the contents of the table will be in their native endian order
(which for most truetype tables is big endian). If the table tag is
@ -293,4 +300,3 @@ public:
};
#endif

9
include/core/SkTypeface.h
View File

@ -134,10 +134,17 @@ public:
/** Retrieve detailed typeface metrics. Used by the PDF backend.
@param perGlyphInfo Indicate what glyph specific information (advances,
names, etc.) should be populated.
@param glyphIDs For per-glyph info, specify subset of the font by
giving glyph ids. Each integer represents a glyph
id. Passing NULL means all glyphs in the font.
@param glyphIDsCount Number of elements in subsetGlyphIds. Ignored if
glyphIDs is NULL.
@return The returned object has already been referenced.
*/
SkAdvancedTypefaceMetrics* getAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) const;
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs = NULL,
uint32_t glyphIDsCount = 0) const;
protected:
/** uniqueID must be unique (please!) and non-zero

1
include/core/SkTypes.h
View File

@ -478,4 +478,3 @@ private:
#endif /* C++ */
#endif

1
include/pdf/SkPDFFont.h
View File

@ -137,6 +137,7 @@ protected:
// Accessors for subclass.
SkAdvancedTypefaceMetrics* fontInfo();
void setFontInfo(SkAdvancedTypefaceMetrics* info);
uint16_t firstGlyphID() const;
uint16_t lastGlyphID() const;
void setLastGlyphID(uint16_t glyphID);

19
src/core/SkAdvancedTypefaceMetrics.cpp
View File

@ -65,6 +65,8 @@ template <typename Data, typename FontHandle>
SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* getAdvanceData(
FontHandle fontHandle,
int num_glyphs,
const uint32_t* subsetGlyphIDs,
uint32_t subsetGlyphIDsLength,
bool (*getAdvance)(FontHandle fontHandle, int gId, Data* data)) {
// Assuming that an ASCII representation of a width or a glyph id is,
// on average, 3 characters long gives the following cut offs for
@ -82,10 +84,17 @@ SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* getAdvanceData(
curRange = appendRange(&result, 0);
Data lastAdvance = SK_MinS16;
int repeats = 0;
uint32_t subsetIndex = 0;
for (int gId = 0; gId <= num_glyphs; gId++) {
Data advance;
Data advance = 0;
if (gId < num_glyphs) {
SkAssertResult(getAdvance(fontHandle, gId, &advance));
// Get glyph id only when subset is NULL, or the id is in subset.
if (!subsetGlyphIDs ||
(subsetIndex < subsetGlyphIDsLength &&
static_cast<uint32_t>(gId) == subsetGlyphIDs[subsetIndex])) {
SkAssertResult(getAdvance(fontHandle, gId, &advance));
++subsetIndex;
}
} else {
advance = SK_MinS16;
}
@ -139,16 +148,22 @@ SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* getAdvanceData(
template SkAdvancedTypefaceMetrics::WidthRange* getAdvanceData(
HDC hdc,
int num_glyphs,
const uint32_t* subsetGlyphIDs,
uint32_t subsetGlyphIDsLength,
bool (*getAdvance)(HDC hdc, int gId, int16_t* data));
#elif defined(SK_BUILD_FOR_UNIX)
template SkAdvancedTypefaceMetrics::WidthRange* getAdvanceData(
FT_Face face,
int num_glyphs,
const uint32_t* subsetGlyphIDs,
uint32_t subsetGlyphIDsLength,
bool (*getAdvance)(FT_Face face, int gId, int16_t* data));
#elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
template SkAdvancedTypefaceMetrics::WidthRange* getAdvanceData(
CTFontRef ctFont,
int num_glyphs,
const uint32_t* subsetGlyphIDs,
uint32_t subsetGlyphIDsLength,
bool (*getAdvance)(CTFontRef ctFont, int gId, int16_t* data));
#endif
template void resetRange(

11
src/core/SkTypeface.cpp
View File

@ -43,7 +43,7 @@ uint32_t SkTypeface::UniqueID(const SkTypeface* face) {
// The initial value of 0 is fine, since a typeface's uniqueID should not
// be zero.
static uint32_t gDefaultFontID;
if (0 == gDefaultFontID) {
SkTypeface* defaultFace =
SkFontHost::CreateTypeface(NULL, NULL, NULL, 0,
@ -93,6 +93,11 @@ SkTypeface* SkTypeface::Deserialize(SkStream* stream) {
}
SkAdvancedTypefaceMetrics* SkTypeface::getAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) const {
return SkFontHost::GetAdvancedTypefaceMetrics(fUniqueID, perGlyphInfo);
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount) const {
return SkFontHost::GetAdvancedTypefaceMetrics(fUniqueID,
perGlyphInfo,
glyphIDs,
glyphIDsCount);
}

80
src/pdf/SkPDFFont.cpp
View File

@ -528,7 +528,7 @@ static void sk_delete_array(const void* ptr, size_t, void*) {
static int get_subset_font_stream(const char* fontName,
const SkTypeface* typeface,
const SkPDFGlyphSet* subset,
const SkTDArray<uint32_t>& subset,
SkPDFStream** fontStream) {
SkRefPtr<SkStream> fontData =
SkFontHost::OpenStream(SkTypeface::UniqueID(typeface));
@ -537,11 +537,6 @@ static int get_subset_font_stream(const char* fontName,
int fontSize = fontData->getLength();
#if defined (SK_SFNTLY_SUBSETTER)
// Generate glyph id array.
SkTDArray<uint32_t> glyphIDs;
glyphIDs.push(0); // Always include glyph 0.
subset->exportTo(&glyphIDs);
// Read font into buffer.
SkPDFStream* subsetFontStream = NULL;
SkTDArray<unsigned char> originalFont;
@ -555,8 +550,8 @@ static int get_subset_font_stream(const char* fontName,
int subsetFontSize = SfntlyWrapper::SubsetFont(fontName,
originalFont.begin(),
fontSize,
glyphIDs.begin(),
glyphIDs.count(),
subset.begin(),
subset.count(),
&subsetFont);
if (subsetFontSize > 0 && subsetFont != NULL) {
SkAutoDataUnref data(SkData::NewWithProc(subsetFont,
@ -751,13 +746,26 @@ SkPDFFont* SkPDFFont::GetFontResource(SkTypeface* typeface, uint16_t glyphID) {
relatedFontDescriptor = relatedFont->getFontDescriptor();
} else {
SkAdvancedTypefaceMetrics::PerGlyphInfo info;
info = SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo;
info = SkTBitOr<SkAdvancedTypefaceMetrics::PerGlyphInfo>(
info, SkAdvancedTypefaceMetrics::kGlyphNames_PerGlyphInfo);
info = SkAdvancedTypefaceMetrics::kGlyphNames_PerGlyphInfo;
info = SkTBitOr<SkAdvancedTypefaceMetrics::PerGlyphInfo>(
info, SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo);
fontMetrics = SkFontHost::GetAdvancedTypefaceMetrics(fontID, info);
#if !defined (SK_SFNTLY_SUBSETTER)
info = SkTBitOr<SkAdvancedTypefaceMetrics::PerGlyphInfo>(
info, SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo);
#endif
fontMetrics =
SkFontHost::GetAdvancedTypefaceMetrics(fontID, info, NULL, 0);
#if defined (SK_SFNTLY_SUBSETTER)
SkSafeUnref(fontMetrics.get()); // SkRefPtr and Get both took a ref.
if (fontMetrics->fType != SkAdvancedTypefaceMetrics::kTrueType_Font) {
// Font does not support subsetting, get new info with advance.
info = SkTBitOr<SkAdvancedTypefaceMetrics::PerGlyphInfo>(
info, SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo);
fontMetrics =
SkFontHost::GetAdvancedTypefaceMetrics(fontID, info, NULL, 0);
SkSafeUnref(fontMetrics.get()); // SkRefPtr and Get both took a ref
}
#endif
}
SkPDFFont* font = Create(fontMetrics.get(), typeface, glyphID,
@ -850,6 +858,13 @@ SkAdvancedTypefaceMetrics* SkPDFFont::fontInfo() {
return fFontInfo.get();
}
void SkPDFFont::setFontInfo(SkAdvancedTypefaceMetrics* info) {
if (info == NULL || info == fFontInfo.get()) {
return;
}
fFontInfo = info;
}
uint16_t SkPDFFont::firstGlyphID() const {
return fFirstGlyphID;
}
@ -978,9 +993,10 @@ bool SkPDFType0Font::populate(const SkPDFGlyphSet* subset) {
insertName("BaseFont", fontInfo()->fFontName);
insertName("Encoding", "Identity-H");
SkPDFCIDFont* newCIDFont;
newCIDFont = new SkPDFCIDFont(fontInfo(), typeface(), subset);
// Pass ref new created to fResources.
SkPDFCIDFont* newCIDFont =
new SkPDFCIDFont(fontInfo(), typeface(), subset);
addResource(newCIDFont);
SkRefPtr<SkPDFArray> descendantFonts = new SkPDFArray();
descendantFonts->unref(); // SkRefPtr and new took a reference.
@ -1006,18 +1022,19 @@ SkPDFCIDFont::SkPDFCIDFont(SkAdvancedTypefaceMetrics* info,
SkPDFCIDFont::~SkPDFCIDFont() {}
bool SkPDFCIDFont::addFontDescriptor(int16_t defaultWidth,
const SkPDFGlyphSet* subset) {
const SkTDArray<uint32_t>* subset) {
SkRefPtr<SkPDFDict> descriptor = new SkPDFDict("FontDescriptor");
descriptor->unref(); // SkRefPtr and new both took a ref.
setFontDescriptor(descriptor.get());
switch (getType()) {
case SkAdvancedTypefaceMetrics::kTrueType_Font: {
SkASSERT(subset);
// Font subsetting
SkPDFStream* rawStream = NULL;
int fontSize = get_subset_font_stream(fontInfo()->fFontName.c_str(),
typeface(),
subset,
*subset,
&rawStream);
SkASSERT(fontSize);
SkASSERT(rawStream);
@ -1060,6 +1077,35 @@ bool SkPDFCIDFont::addFontDescriptor(int16_t defaultWidth,
}
bool SkPDFCIDFont::populate(const SkPDFGlyphSet* subset) {
// Generate new font metrics with advance info for true type fonts.
if (fontInfo()->fType == SkAdvancedTypefaceMetrics::kTrueType_Font) {
// Generate glyph id array.
SkTDArray<uint32_t> glyphIDs;
glyphIDs.push(0); // Always include glyph 0.
if (subset) {
subset->exportTo(&glyphIDs);
}
SkRefPtr<SkAdvancedTypefaceMetrics> fontMetrics;
SkAdvancedTypefaceMetrics::PerGlyphInfo info;
info = SkAdvancedTypefaceMetrics::kGlyphNames_PerGlyphInfo;
info = SkTBitOr<SkAdvancedTypefaceMetrics::PerGlyphInfo>(
info, SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo);
uint32_t* glyphs = (glyphIDs.count() == 1) ? NULL : glyphIDs.begin();
uint32_t glyphsCount = glyphs ? glyphIDs.count() : 0;
fontMetrics =
SkFontHost::GetAdvancedTypefaceMetrics(typeface()->uniqueID(),
info,
glyphs,
glyphsCount);
SkSafeUnref(fontMetrics.get()); // SkRefPtr and Get both took a ref
setFontInfo(fontMetrics.get());
addFontDescriptor(0, &glyphIDs);
} else {
// Other CID fonts
addFontDescriptor(0, NULL);
}
insertName("BaseFont", fontInfo()->fFontName);
if (getType() == SkAdvancedTypefaceMetrics::kType1CID_Font) {
@ -1078,8 +1124,6 @@ bool SkPDFCIDFont::populate(const SkPDFGlyphSet* subset) {
sysInfo->insertInt("Supplement", 0);
insert("CIDSystemInfo", sysInfo.get());
addFontDescriptor(0, subset);
if (fontInfo()->fGlyphWidths.get()) {
int16_t defaultWidth = 0;
SkRefPtr<SkPDFArray> widths =

3
src/pdf/SkPDFFontImpl.h
View File

@ -46,7 +46,8 @@ private:
const SkPDFGlyphSet* subset);
bool populate(const SkPDFGlyphSet* subset);
bool addFontDescriptor(int16_t defaultWidth, const SkPDFGlyphSet* subset);
bool addFontDescriptor(int16_t defaultWidth,
const SkTDArray<uint32_t>* subset);
};
class SkPDFType1Font : public SkPDFFont {

15
src/ports/SkFontHost_FreeType.cpp
View File

@ -408,7 +408,9 @@ static void populate_glyph_to_unicode(FT_Face& face,
// static
SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
uint32_t fontID,
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) {
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount) {
#if defined(SK_BUILD_FOR_MAC) || defined(ANDROID)
return NULL;
#else
@ -521,7 +523,7 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
info->fBBox = SkIRect::MakeLTRB(face->bbox.xMin, face->bbox.yMax,
face->bbox.xMax, face->bbox.yMin);
if (!canEmbed(face) || !FT_IS_SCALABLE(face) ||
if (!canEmbed(face) || !FT_IS_SCALABLE(face) ||
info->fType == SkAdvancedTypefaceMetrics::kOther_Font) {
perGlyphInfo = SkAdvancedTypefaceMetrics::kNo_PerGlyphInfo;
}
@ -552,7 +554,11 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::WidthRange::kRange);
} else {
info->fGlyphWidths.reset(
getAdvanceData(face, face->num_glyphs, &getWidthAdvance));
getAdvanceData(face,
face->num_glyphs,
glyphIDs,
glyphIDsCount,
&getWidthAdvance));
}
}
@ -588,6 +594,7 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
return info;
#endif
}
///////////////////////////////////////////////////////////////////////////
static bool bothZero(SkScalar a, SkScalar b) {
@ -622,7 +629,7 @@ void SkFontHost::FilterRec(SkScalerContext::Rec* rec) {
// to do subpixel, we must have at most slight hinting
h = SkPaint::kSlight_Hinting;
}
#ifndef SK_IGNORE_ROTATED_FREETYPE_FIX
#ifndef SK_IGNORE_ROTATED_FREETYPE_FIX
// rotated text looks bad with hinting, so we disable it as needed
if (!isAxisAligned(*rec)) {
h = SkPaint::kNo_Hinting;

51
src/ports/SkFontHost_mac_atsui.cpp
View File

@ -40,7 +40,7 @@ public:
static uint32_t find_from_name(const char name[]) {
CFStringRef str = CFStringCreateWithCString(NULL, name,
kCFStringEncodingUTF8);
kCFStringEncodingUTF8);
uint32_t fontID = ::ATSFontFindFromName(str, kATSOptionFlagsDefault);
CFRelease(str);
return fontID;
@ -93,7 +93,7 @@ private:
ATSUStyle fStyle;
CGColorSpaceRef fGrayColorSpace;
CGAffineTransform fTransform;
static OSStatus MoveTo(const Float32Point *pt, void *cb);
static OSStatus Line(const Float32Point *pt, void *cb);
static OSStatus Curve(const Float32Point *pt1, const Float32Point *pt2, const Float32Point *pt3, void *cb);
@ -122,20 +122,20 @@ SkScalerContext_Mac::SkScalerContext_Mac(const SkDescriptor* desc)
{
SkAutoMutexAcquire ac(gFTMutex);
OSStatus err;
err = ::ATSUCreateStyle(&fStyle);
SkASSERT(0 == err);
SkMatrix m;
fRec.getSingleMatrix(&m);
fTransform = CGAffineTransformMake(SkScalarToFloat(m[SkMatrix::kMScaleX]),
SkScalarToFloat(m[SkMatrix::kMSkewX]),
SkScalarToFloat(m[SkMatrix::kMSkewY]),
SkScalarToFloat(m[SkMatrix::kMScaleY]),
SkScalarToFloat(m[SkMatrix::kMTransX]),
SkScalarToFloat(m[SkMatrix::kMTransY]));
ATSStyleRenderingOptions renderOpts = kATSStyleApplyAntiAliasing;
switch (fRec.getHinting()) {
case SkPaint::kNo_Hinting:
@ -192,16 +192,16 @@ unsigned SkScalerContext_Mac::generateGlyphCount() {
uint16_t SkScalerContext_Mac::generateCharToGlyph(SkUnichar uni)
{
SkAutoMutexAcquire ac(gFTMutex);
OSStatus err;
UniChar achar = uni;
err = ::ATSUSetTextPointerLocation(fLayout,&achar,0,1,1);
err = ::ATSUSetRunStyle(fLayout,fStyle,kATSUFromTextBeginning,kATSUToTextEnd);
ATSLayoutRecord *layoutPtr;
ItemCount count;
ATSGlyphRef glyph;
err = ::ATSUDirectGetLayoutDataArrayPtrFromTextLayout(fLayout,0,kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,(void**)&layoutPtr,&count);
glyph = layoutPtr->glyphID;
::ATSUDirectReleaseLayoutDataArrayPtr(NULL,kATSUDirectDataLayoutRecordATSLayoutRecordCurrent,(void**)&layoutPtr);
@ -260,7 +260,7 @@ void SkScalerContext_Mac::generateImage(const SkGlyph& glyph)
{
SkAutoMutexAcquire ac(gFTMutex);
SkASSERT(fLayout);
sk_bzero(glyph.fImage, glyph.fHeight * glyph.rowBytes());
CGContextRef contextRef = ::CGBitmapContextCreate(glyph.fImage,
glyph.fWidth, glyph.fHeight, 8,
@ -270,10 +270,10 @@ void SkScalerContext_Mac::generateImage(const SkGlyph& glyph)
SkASSERT(false);
return;
}
::CGContextSetGrayFillColor(contextRef, 1.0, 1.0);
::CGContextSetTextDrawingMode(contextRef, kCGTextFill);
CGGlyph glyphID = glyph.getGlyphID(fBaseGlyphCount);
CGFontRef fontRef = CGFontCreateWithPlatformFont(&fRec.fFontID);
CGContextSetFont(contextRef, fontRef);
@ -281,7 +281,7 @@ void SkScalerContext_Mac::generateImage(const SkGlyph& glyph)
CGContextSetTextMatrix(contextRef, fTransform);
CGContextShowGlyphsAtPoint(contextRef, -glyph.fLeft,
glyph.fTop + glyph.fHeight, &glyphID, 1);
::CGContextRelease(contextRef);
}
@ -359,7 +359,7 @@ static bool init_vertical_metrics(ATSFontRef font, SkPoint pts[5]) {
for (int i = 0; i < 5; i++) {
pts[i].set(0, SkIntToScalar(ys[i]) / upem);
}
sk_free(hhea);
sk_free(head);
return true;
@ -368,7 +368,7 @@ static bool init_vertical_metrics(ATSFontRef font, SkPoint pts[5]) {
void SkScalerContext_Mac::generateFontMetrics(SkPaint::FontMetrics* mx,
SkPaint::FontMetrics* my) {
SkPoint pts[5];
if (!init_vertical_metrics(fRec.fFontID, pts)) {
// these are not as accurate as init_vertical_metrics :(
ATSFontMetrics metrics;
@ -380,7 +380,7 @@ void SkScalerContext_Mac::generateFontMetrics(SkPaint::FontMetrics* mx,
pts[3].set(0, -SkFloatToScalar(metrics.descent));
pts[4].set(0, SkFloatToScalar(metrics.leading)); //+ or -?
}
SkMatrix m;
fRec.getSingleMatrix(&m);
m.mapPoints(pts, 5);
@ -415,7 +415,7 @@ void SkScalerContext_Mac::generatePath(const SkGlyph& glyph, SkPath* path)
{
SkAutoMutexAcquire ac(gFTMutex);
OSStatus err,result;
err = ::ATSUGlyphGetCubicPaths(
fStyle,glyph.fID,
&SkScalerContext_Mac::MoveTo,
@ -476,7 +476,9 @@ SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) {
// static
SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
uint32_t fontID,
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) {
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount) {
SkASSERT(!"SkFontHost::GetAdvancedTypefaceMetrics unimplemented");
return NULL;
}
@ -545,33 +547,33 @@ struct SfntHeader {
if (ATSFontGetTableDirectory(fontID, 0, NULL, &size)) {
return;
}
SkAutoMalloc storage(size);
SkSFNTHeader* header = reinterpret_cast<SkSFNTHeader*>(storage.get());
if (ATSFontGetTableDirectory(fontID, size, header, &size)) {
return;
}
fCount = SkEndian_SwapBE16(header->fNumTables);
fData = header;
storage.detach();
}
~SfntHeader() {
sk_free(fData);
}
int count() const { return fCount; }
const SkSFNTDirEntry* entries() const {
return reinterpret_cast<const SkSFNTDirEntry*>
(reinterpret_cast<char*>(fData) + sizeof(SkSFNTHeader));
}
private:
int fCount;
void* fData;
};
int SkFontHost::CountTables(SkFontID fontID) {
SfntHeader header(fontID, false);
return header.count();
@ -609,4 +611,3 @@ size_t SkFontHost::GetTableData(SkFontID fontID, SkFontTableTag tag,
}
return length;
}

50
src/ports/SkFontHost_mac_coretext.cpp
View File

@ -129,13 +129,13 @@ static SkTypeface* NewFromName(const char familyName[],
CTFontDescriptorRef ctFontDesc;
CFStringRef cfFontName;
CTFontRef ctFont;
// Get the state we need
ctFontDesc = NULL;
ctFont = NULL;
ctFontTraits = 0;
if (theStyle & SkTypeface::kBold) {
ctFontTraits |= kCTFontBoldTrait;
}
@ -143,27 +143,27 @@ static SkTypeface* NewFromName(const char familyName[],
if (theStyle & SkTypeface::kItalic) {
ctFontTraits |= kCTFontItalicTrait;
}
// Create the font info
cfFontName = CFStringCreateWithCString(NULL, familyName, kCFStringEncodingUTF8);
cfFontTraits = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &ctFontTraits);
cfAttributes = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
cfTraits = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
// Create the font
if (cfFontName != NULL && cfFontTraits != NULL && cfAttributes != NULL && cfTraits != NULL) {
CFDictionaryAddValue(cfTraits, kCTFontSymbolicTrait, cfFontTraits);
CFDictionaryAddValue(cfAttributes, kCTFontFamilyNameAttribute, cfFontName);
CFDictionaryAddValue(cfAttributes, kCTFontTraitsAttribute, cfTraits);
ctFontDesc = CTFontDescriptorCreateWithAttributes(cfAttributes);
if (ctFontDesc != NULL) {
ctFont = CTFontCreateWithFontDescriptor(ctFontDesc, 0, NULL);
}
}
CFSafeRelease(cfFontName);
CFSafeRelease(cfFontTraits);
CFSafeRelease(cfAttributes);
@ -233,7 +233,7 @@ static bool FindByNameStyle(SkTypeface* face, SkTypeface::Style style,
void* ctx) {
const SkTypeface_Mac* mface = reinterpret_cast<SkTypeface_Mac*>(face);
const NameStyleRec* rec = reinterpret_cast<const NameStyleRec*>(ctx);
return rec->fStyle == style && mface->fName.equals(rec->fName);
}
@ -246,7 +246,7 @@ static const char* map_css_names(const char* name) {
{ "serif", "Times" },
{ "monospace", "Courier" }
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
if (strcmp(name, gPairs[i].fFrom) == 0) {
return gPairs[i].fTo;
@ -262,18 +262,18 @@ SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
if (familyName) {
familyName = map_css_names(familyName);
}
// Clone an existing typeface
// TODO: only clone if style matches the familyFace's style...
if (familyName == NULL && familyFace != NULL) {
familyFace->ref();
return const_cast<SkTypeface*>(familyFace);
}
if (!familyName || !*familyName) {
familyName = FONT_DEFAULT_NAME;
}
NameStyleRec rec = { familyName, style };
SkTypeface* face = SkTypefaceCache::FindByProc(FindByNameStyle, &rec);
@ -761,7 +761,9 @@ static bool getWidthAdvance(CTFontRef ctFont, int gId, int16_t* data) {
// static
SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
uint32_t fontID,
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) {
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount) {
CTFontRef ctFont = GetFontRefFromFontID(fontID);
ctFont = CTFontCreateCopyWithAttributes(ctFont, CTFontGetUnitsPerEm(ctFont),
NULL, NULL);
@ -771,11 +773,11 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
// plus 1 byte for the trailing null.
int length = CFStringGetMaximumSizeForEncoding(CFStringGetLength(
fontName), kCFStringEncodingUTF8) + 1;
info->fFontName.resize(length);
info->fFontName.resize(length);
CFStringGetCString(fontName, info->fFontName.writable_str(), length,
kCFStringEncodingUTF8);
// Resize to the actual UTF-8 length used, stripping the null character.
info->fFontName.resize(strlen(info->fFontName.c_str()));
info->fFontName.resize(strlen(info->fFontName.c_str()));
info->fMultiMaster = false;
CFIndex glyphCount = CTFontGetGlyphCount(ctFont);
info->fLastGlyphID = SkToU16(glyphCount - 1);
@ -824,7 +826,7 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
CGGlyph glyphs[count];
CGRect boundingRects[count];
if (CTFontGetGlyphsForCharacters(ctFont, stem_chars, glyphs, count)) {
CTFontGetBoundingRectsForGlyphs(ctFont, kCTFontHorizontalOrientation,
CTFontGetBoundingRectsForGlyphs(ctFont, kCTFontHorizontalOrientation,
glyphs, boundingRects, count);
for (size_t i = 0; i < count; i++) {
int16_t width = boundingRects[i].size.width;
@ -847,7 +849,11 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::WidthRange::kDefault);
} else {
info->fGlyphWidths.reset(
getAdvanceData(ctFont, glyphCount, &getWidthAdvance));
getAdvanceData(ctFont,
glyphCount,
glyphIDs,
glyphIDsCount,
&getWidthAdvance));
}
}
@ -989,7 +995,7 @@ void SkFontHost::FilterRec(SkScalerContext::Rec* rec) {
SkScalerContext::kAutohinting_Flag;
rec->fFlags &= ~flagsWeDontSupport;
// we only support 2 levels of hinting
SkPaint::Hinting h = rec->getHinting();
if (SkPaint::kSlight_Hinting == h) {
@ -1115,7 +1121,3 @@ size_t SkFontHost::GetTableData(SkFontID fontID, SkFontTableTag tag,
memcpy(data, CFDataGetBytePtr(cfData) + offset, length);
return(length);
}

10
src/ports/SkFontHost_win.cpp
View File

@ -743,7 +743,9 @@ static bool getWidthAdvance(HDC hdc, int gId, int16_t* advance) {
// static
SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
uint32_t fontID,
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) {
SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount) {
LOGFONT lf;
GetLogFontByID(fontID, &lf);
SkAdvancedTypefaceMetrics* info = NULL;
@ -863,7 +865,11 @@ SkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::WidthRange::kDefault);
} else {
info->fGlyphWidths.reset(
getAdvanceData(hdc, glyphCount, &getWidthAdvance));
getAdvanceData(hdc,
glyphCount,
glyphIDs,
glyphIDsCount,
&getWidthAdvance));
}
}