skiagm::AndroidBlendModesGM Class Reference

Inheritance diagram for skiagm::AndroidBlendModesGM:

Public Member Functions
	AndroidBlendModesGM ()
Public Member Functions inherited from skiagm::GM
	GM (SkColor backgroundColor=SK_ColorWHITE)
virtual	~GM ()
void	setMode (Mode mode)
Mode	getMode () const
DrawResult	gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
void	gpuTeardown ()
void	onceBeforeDraw ()
DrawResult	draw (SkCanvas *canvas)
DrawResult	draw (SkCanvas *, SkString *errorMsg)
void	drawBackground (SkCanvas *)
DrawResult	drawContent (SkCanvas *canvas)
DrawResult	drawContent (SkCanvas *, SkString *errorMsg)
virtual bool	runAsBench () const
SkScalar	width ()
SkScalar	height ()
SkColor	getBGColor () const
void	setBGColor (SkColor)
void	drawSizeBounds (SkCanvas *, SkColor)
bool	animate (double)
virtual bool	onChar (SkUnichar)
bool	getControls (SkMetaData *controls)
void	setControls (const SkMetaData &controls)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual void	modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
virtual bool	isBazelOnly () const
virtual std::map< std::string, std::string >	getGoldKeys () const

Protected Member Functions
SkString	getName () const override
SkISize	getISize () override
void	onOnceBeforeDraw () override
void	drawTile (SkCanvas *canvas, int xOffset, int yOffset, SkBlendMode mode)
void	onDraw (SkCanvas *canvas) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Additional Inherited Members
Public Types inherited from skiagm::GM
enum	Mode { kGM_Mode , kSample_Mode , kBench_Mode }
using	DrawResult = skiagm::DrawResult
using	GraphiteTestContext = skiatest::graphite::GraphiteTestContext
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []

Detailed Description

Definition at line 29 of file androidblendmodes.cpp.

Constructor & Destructor Documentation

AndroidBlendModesGM()

skiagm::AndroidBlendModesGM::AndroidBlendModesGM ( )

inline

Definition at line 31 of file androidblendmodes.cpp.

                          {
        this->setBGColor(SK_ColorBLACK);
    }

Member Function Documentation

drawTile()

void skiagm::AndroidBlendModesGM::drawTile ( SkCanvas *  canvas, int  xOffset, int  yOffset, SkBlendMode  mode  )

inlineprotected

Definition at line 65 of file androidblendmodes.cpp.

                                                                                {
        canvas->translate(xOffset, yOffset);
 
        canvas->clipRect(SkRect::MakeXYWH(0, 0, 256, 256));
 
        canvas->saveLayer(nullptr, nullptr);
 
        SkPaint p;
        canvas->drawImage(fCompositeDst.asImage(), 0, 0, SkSamplingOptions(), &p);
        p.setBlendMode(mode);
        canvas->drawImage(fCompositeSrc.asImage(), 0, 0, SkSamplingOptions(), &p);
    }

getISize()

SkISize skiagm::AndroidBlendModesGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 38 of file androidblendmodes.cpp.

                                {
        return SkISize::Make(kNumCols * kBitmapSize, kNumRows * kBitmapSize);
    }

getName()

SkString skiagm::AndroidBlendModesGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 36 of file androidblendmodes.cpp.

{ return SkString("androidblendmodes"); }

onDraw()

void skiagm::AndroidBlendModesGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 78 of file androidblendmodes.cpp.

                                           {
        SkFont font = ToolUtils::DefaultPortableFont();
 
        ToolUtils::draw_checkerboard(canvas, kWhite, kGrey, 32);
 
        int xOffset = 0, yOffset = 0;
 
        // Android doesn't expose all the blend modes
        // Note that the Android documentation calls:
        //    Skia's kPlus,     add
        //    Skia's kModulate, multiply
        for (SkBlendMode mode : { SkBlendMode::kPlus /* add */, SkBlendMode::kClear,
                                  SkBlendMode::kDarken, SkBlendMode::kDst,
                                  SkBlendMode::kDstATop, SkBlendMode::kDstIn,
                                  SkBlendMode::kDstOut, SkBlendMode::kDstOver,
                                  SkBlendMode::kLighten, SkBlendMode::kModulate /* multiply */,
                                  SkBlendMode::kOverlay, SkBlendMode::kScreen,
                                  SkBlendMode::kSrc, SkBlendMode::kSrcATop,
                                  SkBlendMode::kSrcIn, SkBlendMode::kSrcOut,
                                  SkBlendMode::kSrcOver, SkBlendMode::kXor } ) {
 
            int saveCount = canvas->save();
            this->drawTile(canvas, xOffset, yOffset, mode);
            canvas->restoreToCount(saveCount);
 
            SkTextUtils::DrawString(canvas, SkBlendMode_Name(mode),
                               xOffset + kBitmapSize/2.0f,
                               yOffset + kBitmapSize,
                               font, SkPaint(), SkTextUtils::kCenter_Align);
 
            xOffset += 256;
            if (xOffset >= 1024) {
                xOffset = 0;
                yOffset += 256;
            }
        }
    }

onOnceBeforeDraw()

void skiagm::AndroidBlendModesGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 42 of file androidblendmodes.cpp.

                                     {
        SkImageInfo ii = SkImageInfo::MakeN32Premul(kBitmapSize, kBitmapSize);
        {
            fCompositeSrc.allocPixels(ii);
            SkCanvas tmp(fCompositeSrc);
            tmp.clear(SK_ColorTRANSPARENT);
            SkPaint p;
            p.setAntiAlias(true);
            p.setColor(ToolUtils::color_to_565(kBlue));
            tmp.drawRect(SkRect::MakeLTRB(16, 96, 160, 240), p);
        }
 
        {
            fCompositeDst.allocPixels(ii);
            SkCanvas tmp(fCompositeDst);
            tmp.clear(SK_ColorTRANSPARENT);
            SkPaint p;
            p.setAntiAlias(true);
            p.setColor(ToolUtils::color_to_565(kRed));
            tmp.drawCircle(160, 95, 80, p);
        }
    }

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

• third_party/skia/gm/androidblendmodes.cpp