AlphaGradientsGM Class Reference

Inheritance diagram for AlphaGradientsGM:

Public Member Functions
	AlphaGradientsGM ()
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 void	onOnceBeforeDraw ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Static Protected Member Functions
static void	draw_grad (SkCanvas *canvas, const SkRect &r, SkColor c0, SkColor c1, bool doPreMul)

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 21 of file alphagradients.cpp.

Constructor & Destructor Documentation

AlphaGradientsGM()

AlphaGradientsGM::AlphaGradientsGM ( )

inline

Definition at line 23 of file alphagradients.cpp.

{}

Member Function Documentation

draw_grad()

static void AlphaGradientsGM::draw_grad ( SkCanvas *  canvas, const SkRect &  r, SkColor  c0, SkColor  c1, bool  doPreMul  )

inlinestaticprotected

Definition at line 30 of file alphagradients.cpp.

                                                                 {
        SkColor colors[] = { c0, c1 };
        SkPoint pts[] = { { r.fLeft, r.fTop }, { r.fRight, r.fBottom } };
        SkPaint paint;
        uint32_t flags = doPreMul ? SkGradientShader::kInterpolateColorsInPremul_Flag : 0;
        paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2,
                                                     SkTileMode::kClamp, flags, nullptr));
        canvas->drawRect(r, paint);
 
        paint.setShader(nullptr);
        paint.setStyle(SkPaint::kStroke_Style);
        canvas->drawRect(r, paint);
    }

getISize()

SkISize AlphaGradientsGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 28 of file alphagradients.cpp.

{ return SkISize::Make(640, 480); }

getName()

SkString AlphaGradientsGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 26 of file alphagradients.cpp.

{ return SkString("alphagradients"); }

onDraw()

void AlphaGradientsGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 45 of file alphagradients.cpp.

                                           {
        constexpr struct {
            SkColor fColor0;
            SkColor fColor1;
        } gRec[] = {
            { 0xFFFFFFFF, 0x00000000 },
            { 0xFFFFFFFF, 0x00FF0000 },
            { 0xFFFFFFFF, 0x00FFFF00 },
            { 0xFFFFFFFF, 0x00FFFFFF },
            { 0xFFFF0000, 0x00000000 },
            { 0xFFFF0000, 0x00FF0000 },
            { 0xFFFF0000, 0x00FFFF00 },
            { 0xFFFF0000, 0x00FFFFFF },
            { 0xFF0000FF, 0x00000000 },
            { 0xFF0000FF, 0x00FF0000 },
            { 0xFF0000FF, 0x00FFFF00 },
            { 0xFF0000FF, 0x00FFFFFF },
        };
 
        SkRect r = SkRect::MakeWH(300, 30);
 
        canvas->translate(10, 10);
 
        for (int doPreMul = 0; doPreMul <= 1; ++doPreMul) {
            canvas->save();
            for (size_t i = 0; i < std::size(gRec); ++i) {
                draw_grad(canvas, r, gRec[i].fColor0, gRec[i].fColor1, SkToBool(doPreMul));
                canvas->translate(0, r.height() + 8);
            }
            canvas->restore();
            canvas->translate(r.width() + 10, 0);
        }
    }

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

• third_party/skia/gm/alphagradients.cpp