SkUnicodeBidiRunIterator Class Reference

Inheritance diagram for SkUnicodeBidiRunIterator:

Public Member Functions
	SkUnicodeBidiRunIterator (const char *utf8, const char *end, SkUnicodeBidi bidi)
void	consume () override
size_t	endOfCurrentRun () const override
bool	atEnd () const override
SkBidiIterator::Level	currentLevel () const override
virtual uint8_t	currentLevel () const =0
Public Member Functions inherited from SkShaper::RunIterator
virtual	~RunIterator ()=default
virtual void	consume ()=0
virtual size_t	endOfCurrentRun () const =0
virtual bool	atEnd () const =0

Detailed Description

Definition at line 29 of file SkShaper_skunicode.cpp.

Constructor & Destructor Documentation

SkUnicodeBidiRunIterator()

SkUnicodeBidiRunIterator::SkUnicodeBidiRunIterator ( const char *  utf8, const char *  end, SkUnicodeBidi  bidi  )

inline

Definition at line 31 of file SkShaper_skunicode.cpp.

        : fBidi(std::move(bidi))
        , fEndOfCurrentRun(utf8)
        , fBegin(utf8)
        , fEnd(end)
        , fUTF16LogicalPosition(0)
        , fLevel(SkBidiIterator::kLTR)
    {}

Member Function Documentation

atEnd()

bool SkUnicodeBidiRunIterator::atEnd ( ) const

inlineoverridevirtual

Return true if consume should no longer be called.

Implements SkShaper::RunIterator.

Definition at line 60 of file SkShaper_skunicode.cpp.

                                {
        return fUTF16LogicalPosition == fBidi->getLength();
    }

consume()

void SkUnicodeBidiRunIterator::consume ( )

inlineoverridevirtual

Set state to that of current run and move iterator to end of that run.

Implements SkShaper::RunIterator.

Definition at line 40 of file SkShaper_skunicode.cpp.

                            {
        SkASSERT(fUTF16LogicalPosition < fBidi->getLength());
        int32_t endPosition = fBidi->getLength();
        fLevel = fBidi->getLevelAt(fUTF16LogicalPosition);
        SkUnichar u = utf8_next(&fEndOfCurrentRun, fEnd);
        fUTF16LogicalPosition += SkUTF::ToUTF16(u);
        SkBidiIterator::Level level;
        while (fUTF16LogicalPosition < endPosition) {
            level = fBidi->getLevelAt(fUTF16LogicalPosition);
            if (level != fLevel) {
                break;
            }
            u = utf8_next(&fEndOfCurrentRun, fEnd);
 
            fUTF16LogicalPosition += SkUTF::ToUTF16(u);
        }
    }

currentLevel()

SkBidiIterator::Level SkUnicodeBidiRunIterator::currentLevel ( ) const

inlineoverridevirtual

The unicode bidi embedding level (even ltr, odd rtl)

Implements SkShaper::BiDiRunIterator.

Definition at line 63 of file SkShaper_skunicode.cpp.

                                                      {
        return fLevel;
    }

endOfCurrentRun()

size_t SkUnicodeBidiRunIterator::endOfCurrentRun ( ) const

inlineoverridevirtual

Offset to one past the last (utf8) element in the current run.

Implements SkShaper::RunIterator.

Definition at line 57 of file SkShaper_skunicode.cpp.

                                            {
        return fEndOfCurrentRun - fBegin;
    }

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

• third_party/skia/modules/skshaper/src/SkShaper_skunicode.cpp