skiagm::Xfermodes2GM Class Reference

Inheritance diagram for skiagm::Xfermodes2GM:

Public Member Functions
	Xfermodes2GM (bool grayscale)
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	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

Private Member Functions
void	onOnceBeforeDraw () override

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 34 of file xfermodes2.cpp.

Constructor & Destructor Documentation

Xfermodes2GM()

skiagm::Xfermodes2GM::Xfermodes2GM ( bool  grayscale )

inline

Definition at line 36 of file xfermodes2.cpp.

: fGrayscale(grayscale) {}

Member Function Documentation

getISize()

SkISize skiagm::Xfermodes2GM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 43 of file xfermodes2.cpp.

{ return SkISize::Make(455, 475); }

getName()

SkString skiagm::Xfermodes2GM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 39 of file xfermodes2.cpp.

                                      {
        return fGrayscale ? SkString("xfermodes2_gray") : SkString("xfermodes2");
    }

onDraw()

void skiagm::Xfermodes2GM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 45 of file xfermodes2.cpp.

                                           {
        canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
 
        const SkScalar w = SkIntToScalar(kSize);
        const SkScalar h = SkIntToScalar(kSize);
 
        SkFont font = ToolUtils::DefaultPortableFont();
 
        const int W = 6;
 
        SkScalar x = 0, y = 0;
        for (size_t m = 0; m < kSkBlendModeCount; m++) {
            SkBlendMode mode = static_cast<SkBlendMode>(m);
 
            canvas->save();
 
            canvas->translate(x, y);
            SkPaint p;
            p.setAntiAlias(false);
            p.setStyle(SkPaint::kFill_Style);
            p.setShader(fBG);
            SkRect r = SkRect::MakeWH(w, h);
            canvas->drawRect(r, p);
 
            canvas->saveLayer(&r, nullptr);
 
            p.setShader(fDst);
            canvas->drawRect(r, p);
            p.setShader(fSrc);
            p.setBlendMode(mode);
            canvas->drawRect(r, p);
 
            canvas->restore();
 
            r.inset(-SK_ScalarHalf, -SK_ScalarHalf);
            p.setStyle(SkPaint::kStroke_Style);
            p.setShader(nullptr);
            p.setBlendMode(SkBlendMode::kSrcOver);
            canvas->drawRect(r, p);
 
            canvas->restore();
 
#if 1
            SkTextUtils::DrawString(canvas, SkBlendMode_Name(mode), x + w/2, y - font.getSize()/2, font, SkPaint(),
                                    SkTextUtils::kCenter_Align);
#endif
            x += w + SkIntToScalar(10);
            if ((m % W) == W - 1) {
                x = 0;
                y += h + SkIntToScalar(30);
            }
        }
    }

onOnceBeforeDraw()

void skiagm::Xfermodes2GM::onOnceBeforeDraw ( )

inlineoverrideprivatevirtual

Reimplemented from skiagm::GM.

Definition at line 100 of file xfermodes2.cpp.

                                     {
        const uint32_t kCheckData[] = {
            SkPackARGB32(0xFF, 0x42, 0x41, 0x42),
            SkPackARGB32(0xFF, 0xD6, 0xD3, 0xD6),
            SkPackARGB32(0xFF, 0xD6, 0xD3, 0xD6),
            SkPackARGB32(0xFF, 0x42, 0x41, 0x42)
        };
        SkBitmap bg;
        bg.allocN32Pixels(2, 2, true);
        memcpy(bg.getPixels(), kCheckData, sizeof(kCheckData));
 
        SkMatrix lm;
        lm.setScale(SkIntToScalar(16), SkIntToScalar(16));
        fBG = bg.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, SkSamplingOptions(), lm);
 
        SkBitmap srcBmp;
        srcBmp.allocN32Pixels(kSize, kSize);
        SkPMColor* pixels = reinterpret_cast<SkPMColor*>(srcBmp.getPixels());
 
        for (int y = 0; y < kSize; ++y) {
            int c = y * (1 << kShift);
            SkPMColor rowColor = fGrayscale ? SkPackARGB32(c, c, c, c) : SkPackARGB32(c, c, 0, c/2);
            for (int x = 0; x < kSize; ++x) {
                pixels[kSize * y + x] = rowColor;
            }
        }
        fSrc = srcBmp.makeShader(SkSamplingOptions());
        SkBitmap dstBmp;
        dstBmp.allocN32Pixels(kSize, kSize);
        pixels = reinterpret_cast<SkPMColor*>(dstBmp.getPixels());
 
        for (int x = 0; x < kSize; ++x) {
            int c = x * (1 << kShift);
            SkPMColor colColor = fGrayscale ? SkPackARGB32(c, c, c, c) : SkPackARGB32(c, 0, c, c/2);
            for (int y = 0; y < kSize; ++y) {
                pixels[kSize * y + x] = colColor;
            }
        }
        fDst = dstBmp.makeShader(SkSamplingOptions());
    }

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

• third_party/skia/gm/xfermodes2.cpp