SafeRLEAdditiveBlitter Class Reference

Inheritance diagram for SafeRLEAdditiveBlitter:

Public Member Functions
	SafeRLEAdditiveBlitter (SkBlitter *realBlitter, const SkIRect &ir, const SkIRect &clipBounds, bool isInverse)
void	blitAntiH (int x, int y, const SkAlpha antialias[], int len) override
void	blitAntiH (int x, int y, const SkAlpha alpha) override
void	blitAntiH (int x, int y, int width, const SkAlpha alpha) override
Public Member Functions inherited from RunBasedAdditiveBlitter
	RunBasedAdditiveBlitter (SkBlitter *realBlitter, const SkIRect &ir, const SkIRect &clipBounds, bool isInverse)
	~RunBasedAdditiveBlitter () override
SkBlitter *	getRealBlitter (bool forceRealBlitter) override
void	blitAntiH (int x, int y, const SkAlpha antialias[], int len) override
void	blitAntiH (int x, int y, const SkAlpha alpha) override
void	blitAntiH (int x, int y, int width, const SkAlpha alpha) override
int	getWidth () override
void	flush_if_y_changed (SkFixed y, SkFixed nextY) override
Public Member Functions inherited from AdditiveBlitter
	~AdditiveBlitter () override
virtual SkBlitter *	getRealBlitter (bool forceRealBlitter=false)=0
virtual void	blitAntiH (int x, int y, const SkAlpha antialias[], int len)=0
virtual void	blitAntiH (int x, int y, const SkAlpha alpha)=0
virtual void	blitAntiH (int x, int y, int width, const SkAlpha alpha)=0
void	blitAntiH (int x, int y, const SkAlpha antialias[], const int16_t runs[]) override
void	blitV (int x, int y, int height, SkAlpha alpha) override
	Blit a vertical run of pixels with a constant alpha value. More...
void	blitH (int x, int y, int width) override
	Blit a horizontal run of one or more pixels. More...
void	blitRect (int x, int y, int width, int height) override
	Blit a solid rectangle one or more pixels wide. More...
void	blitAntiRect (int x, int y, int width, int height, SkAlpha leftAlpha, SkAlpha rightAlpha) override
virtual int	getWidth ()=0
virtual void	flush_if_y_changed (SkFixed y, SkFixed nextY)=0
Public Member Functions inherited from SkBlitter
virtual	~SkBlitter ()
virtual void	blitH (int x, int y, int width)=0
	Blit a horizontal run of one or more pixels. More...
virtual void	blitAntiH (int x, int y, const SkAlpha antialias[], const int16_t runs[])=0
virtual void	blitV (int x, int y, int height, SkAlpha alpha)
	Blit a vertical run of pixels with a constant alpha value. More...
virtual void	blitRect (int x, int y, int width, int height)
	Blit a solid rectangle one or more pixels wide. More...
virtual void	blitAntiRect (int x, int y, int width, int height, SkAlpha leftAlpha, SkAlpha rightAlpha)
void	blitFatAntiRect (const SkRect &rect)
virtual void	blitMask (const SkMask &, const SkIRect &clip)
virtual void	blitAntiH2 (int x, int y, U8CPU a0, U8CPU a1)
virtual void	blitAntiV2 (int x, int y, U8CPU a0, U8CPU a1)
virtual bool	isNullBlitter () const
virtual int	requestRowsPreserved () const
virtual void *	allocBlitMemory (size_t sz)
void	blitRectRegion (const SkIRect &rect, const SkRegion &clip)
void	blitRegion (const SkRegion &clip)

Additional Inherited Members
Static Public Member Functions inherited from SkBlitter
static bool	UseLegacyBlitter (const SkPixmap &, const SkPaint &, const SkMatrix &)
static SkBlitter *	Choose (const SkPixmap &dst, const SkMatrix &ctm, const SkPaint &paint, SkArenaAlloc *, bool drawCoverage, sk_sp< SkShader > clipShader, const SkSurfaceProps &props)
static SkBlitter *	ChooseSprite (const SkPixmap &dst, const SkPaint &, const SkPixmap &src, int left, int top, SkArenaAlloc *, sk_sp< SkShader > clipShader)
Protected Member Functions inherited from RunBasedAdditiveBlitter
bool	check (int x, int width) const
int	getRunsSz () const
void	advanceRuns ()
SkAlpha	snapAlpha (SkAlpha alpha)
void	flush ()
void	checkY (int y)
Protected Attributes inherited from RunBasedAdditiveBlitter
SkBlitter *	fRealBlitter
int	fCurrY
int	fWidth
int	fLeft
int	fTop
int	fRunsToBuffer
void *	fRunsBuffer
int	fCurrentRun
SkAlphaRuns	fRuns
int	fOffsetX
Protected Attributes inherited from SkBlitter
SkAutoMalloc	fBlitMemory

Detailed Description

Definition at line 460 of file SkScan_AAAPath.cpp.

Constructor & Destructor Documentation

SafeRLEAdditiveBlitter()

SafeRLEAdditiveBlitter::SafeRLEAdditiveBlitter ( SkBlitter *  realBlitter, const SkIRect &  ir, const SkIRect &  clipBounds, bool  isInverse  )

inline

Definition at line 462 of file SkScan_AAAPath.cpp.

            : RunBasedAdditiveBlitter(realBlitter, ir, clipBounds, isInverse) {}

Member Function Documentation

blitAntiH() [1/3]

void SafeRLEAdditiveBlitter::blitAntiH ( int  x, int  y, const SkAlpha  alpha  )

overridevirtual

Reimplemented from RunBasedAdditiveBlitter.

Definition at line 502 of file SkScan_AAAPath.cpp.

                                                                        {
    checkY(y);
    x -= fLeft;
 
    if (x < fOffsetX) {
        fOffsetX = 0;
    }
 
    if (check(x, 1)) {
        // Break the run
        fOffsetX = fRuns.add(x, 0, 1, 0, 0, fOffsetX);
        safely_add_alpha(&fRuns.fAlpha[x], alpha);
    }
}

blitAntiH() [2/3]

void SafeRLEAdditiveBlitter::blitAntiH ( int  x, int  y, const SkAlpha  antialias[], int  len  )

overridevirtual

Reimplemented from RunBasedAdditiveBlitter.

Definition at line 473 of file SkScan_AAAPath.cpp.

                                                                                       {
    checkY(y);
    x -= fLeft;
 
    if (x < 0) {
        len += x;
        antialias -= x;
        x = 0;
    }
    len = std::min(len, fWidth - x);
    SkASSERT(check(x, len));
 
    if (x < fOffsetX) {
        fOffsetX = 0;
    }
 
    fOffsetX = fRuns.add(x, 0, len, 0, 0, fOffsetX);  // Break the run
    for (int i = 0; i < len; i += fRuns.fRuns[x + i]) {
        for (int j = 1; j < fRuns.fRuns[x + i]; j++) {
            fRuns.fRuns[x + i + j]  = 1;
            fRuns.fAlpha[x + i + j] = fRuns.fAlpha[x + i];
        }
        fRuns.fRuns[x + i] = 1;
    }
    for (int i = 0; i < len; ++i) {
        safely_add_alpha(&fRuns.fAlpha[x + i], antialias[i]);
    }
}

blitAntiH() [3/3]

void SafeRLEAdditiveBlitter::blitAntiH ( int  x, int  y, int  width, const SkAlpha  alpha  )

overridevirtual

Reimplemented from RunBasedAdditiveBlitter.

Definition at line 517 of file SkScan_AAAPath.cpp.

                                                                                   {
    checkY(y);
    x -= fLeft;
 
    if (x < fOffsetX) {
        fOffsetX = 0;
    }
 
    if (check(x, width)) {
        // Break the run
        fOffsetX = fRuns.add(x, 0, width, 0, 0, fOffsetX);
        for (int i = x; i < x + width; i += fRuns.fRuns[i]) {
            safely_add_alpha(&fRuns.fAlpha[i], alpha);
        }
    }
}

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

• third_party/skia/src/core/SkScan_AAAPath.cpp