SkFontScanner_Fontations Class Reference

#include <SkFontScanner_fontations.h>

Inheritance diagram for SkFontScanner_Fontations:

Public Member Functions
	SkFontScanner_Fontations ()
	~SkFontScanner_Fontations () override
bool	scanFile (SkStreamAsset *stream, int *numFaces) const override
bool	scanFace (SkStreamAsset *stream, int faceIndex, int *numInstances) const override
bool	scanInstance (SkStreamAsset *stream, int faceIndex, int instanceIndex, SkString *name, SkFontStyle *style, bool *isFixedPitch, AxisDefinitions *axes) const override
Public Member Functions inherited from SkFontScanner
virtual	~SkFontScanner ()=default
virtual bool	scanFile (SkStreamAsset *stream, int *numFaces) const =0
virtual bool	scanFace (SkStreamAsset *stream, int faceIndex, int *numInstances) const =0
virtual bool	scanInstance (SkStreamAsset *stream, int faceIndex, int instanceIndex, SkString *name, SkFontStyle *style, bool *isFixedPitch, AxisDefinitions *axes) const =0
Public Member Functions inherited from SkNoncopyable
	SkNoncopyable ()=default
	SkNoncopyable (SkNoncopyable &&)=default
SkNoncopyable &	operator= (SkNoncopyable &&)=default

Additional Inherited Members
Public Types inherited from SkFontScanner
typedef skia_private::STArray< 4, AxisDefinition, true >	AxisDefinitions

Detailed Description

Definition at line 26 of file SkFontScanner_fontations.h.

Constructor & Destructor Documentation

SkFontScanner_Fontations()

SkFontScanner_Fontations::SkFontScanner_Fontations

(

)

Definition at line 24 of file SkFontScanner_fontations.cpp.

                                                   {
}

~SkFontScanner_Fontations()

SkFontScanner_Fontations::~SkFontScanner_Fontations ( )

override

Definition at line 27 of file SkFontScanner_fontations.cpp.

                                                    {
}

Member Function Documentation

scanFace()

bool SkFontScanner_Fontations::scanFace ( SkStreamAsset *  stream, int  faceIndex, int *  numInstances  ) const

overridevirtual

Implements SkFontScanner.

Definition at line 42 of file SkFontScanner_fontations.cpp.

                                                                 {
    rust::Box<fontations_ffi::BridgeFontRef> fontRef =
            make_bridge_font_ref(SkData::MakeFromStream(stream, stream->getLength()), faceIndex);
    stream->rewind();
    if (!fontations_ffi::font_ref_is_valid(*fontRef)) {
        return false;
    }
 
    // TODO: For now assume only the default instance (not variation)
    *numInstances = 1;
    return true;
}

scanFile()

bool SkFontScanner_Fontations::scanFile ( SkStreamAsset *  stream, int *  numFaces  ) const

overridevirtual

Implements SkFontScanner.

Definition at line 30 of file SkFontScanner_fontations.cpp.

                                                                                  {
    sk_sp<SkData> fontData = SkData::MakeFromStream(stream, stream->getLength());
    stream->rewind();
    rust::Slice<const uint8_t> slice{fontData->bytes(), fontData->size()};
    ::std::uint32_t num_fonts;
    if (!fontations_ffi::font_or_collection(slice, num_fonts)) {
        return false;
    }
    *numFaces = num_fonts == 0 ? 1 : num_fonts;
    return true;
}

scanInstance()

bool SkFontScanner_Fontations::scanInstance ( SkStreamAsset *  stream, int  faceIndex, int  instanceIndex, SkString *  name, SkFontStyle *  style, bool *  isFixedPitch, AxisDefinitions *  axes  ) const

overridevirtual

Implements SkFontScanner.

Definition at line 58 of file SkFontScanner_fontations.cpp.

                                                                         {
    SkASSERT(instanceIndex == 0);
    rust::Box<fontations_ffi::BridgeFontRef> fontRef =
            make_bridge_font_ref(SkData::MakeFromStream(stream, stream->getLength()), faceIndex);
    if (!fontations_ffi::font_ref_is_valid(*fontRef)) {
        return false;
    }
 
    if (name != nullptr) {
        rust::String readFamilyName = fontations_ffi::family_name(*fontRef);
        *name = SkString(readFamilyName.data(), readFamilyName.size());
    }
 
    if (style != nullptr) {
        rust::Slice<const fontations_ffi::SkiaDesignCoordinate> coordinates;
        rust::Box<fontations_ffi::BridgeNormalizedCoords> normalizedCoords =
            resolve_into_normalized_coords(*fontRef, coordinates);
        fontations_ffi::BridgeFontStyle fontStyle;
        if (fontations_ffi::get_font_style(*fontRef, *normalizedCoords, fontStyle)) {
            *style = SkFontStyle(fontStyle.weight, fontStyle.width,  (SkFontStyle::Slant)fontStyle.slant);
        } else {
            *style = SkFontStyle::Normal();
        }
    }
 
    if (isFixedPitch != nullptr) {
        *isFixedPitch = false;  // TODO
    }
 
    return true;
}

---

The documentation for this class was generated from the following files:

• third_party/skia/src/ports/SkFontScanner_fontations.h
• third_party/skia/src/ports/SkFontScanner_fontations.cpp