HSLColorFilterGM Class Reference

Inheritance diagram for HSLColorFilterGM:

Protected Member Functions
SkString	getName () const override
SkISize	getISize () override
void	onOnceBeforeDraw () 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

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
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
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []

Detailed Description

Definition at line 86 of file colorfilters.cpp.

Member Function Documentation

getISize()

SkISize HSLColorFilterGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 90 of file colorfilters.cpp.

{ return {840, 1100}; }

getName()

SkString HSLColorFilterGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 88 of file colorfilters.cpp.

{ return SkString("hslcolorfilter"); }

onDraw()

void HSLColorFilterGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 111 of file colorfilters.cpp.

                                           {
        using std::make_tuple;
 
        static constexpr struct {
            std::tuple<float, float> h, s, l;
        } gTests[] = {
            { make_tuple(-0.5f, 0.5f), make_tuple( 0.0f, 0.0f), make_tuple( 0.0f, 0.0f) },
            { make_tuple( 0.0f, 0.0f), make_tuple(-1.0f, 1.0f), make_tuple( 0.0f, 0.0f) },
            { make_tuple( 0.0f, 0.0f), make_tuple( 0.0f, 0.0f), make_tuple(-1.0f, 1.0f) },
        };
 
        const auto rect = SkRect::MakeWH(kWheelSize, kWheelSize);
 
        canvas->drawColor(0xffcccccc);
        SkPaint paint;
 
        for (const auto& shader : fShaders) {
            paint.setShader(shader);
 
            for (const auto& tst: gTests) {
                canvas->translate(0, kWheelSize * 0.1f);
 
                const auto dh = (std::get<1>(tst.h) - std::get<0>(tst.h)) / (kSteps - 1),
                           ds = (std::get<1>(tst.s) - std::get<0>(tst.s)) / (kSteps - 1),
                           dl = (std::get<1>(tst.l) - std::get<0>(tst.l)) / (kSteps - 1);
                auto h = std::get<0>(tst.h),
                     s = std::get<0>(tst.s),
                     l = std::get<0>(tst.l);
                {
                    SkAutoCanvasRestore acr(canvas, true);
                    for (size_t i = 0; i < kSteps; ++i) {
                        paint.setColorFilter(make_filter(h, s, l));
                        canvas->translate(kWheelSize * 0.1f, 0);
                        canvas->drawRect(rect, paint);
                        canvas->translate(kWheelSize * 1.1f, 0);
                        h += dh;
                        s += ds;
                        l += dl;
                    }
                }
                canvas->translate(0, kWheelSize * 1.1f);
            }
            canvas->translate(0, kWheelSize * 0.1f);
        }
    }

onOnceBeforeDraw()

void HSLColorFilterGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 92 of file colorfilters.cpp.

                                     {
        sk_sp<SkImage> mandrill = ToolUtils::GetResourceAsImage("images/mandrill_256.png");
        const auto lm = SkMatrix::RectToRect(SkRect::MakeWH(mandrill->width(), mandrill->height()),
                                             SkRect::MakeWH(kWheelSize, kWheelSize));
        fShaders.push_back(mandrill->makeShader(SkSamplingOptions(), &lm));
 
        static constexpr SkColor gGrads[][4] = {
            { 0xffff0000, 0xff00ff00, 0xff0000ff, 0xffff0000 },
            { 0xdfc08040, 0xdf8040c0, 0xdf40c080, 0xdfc08040 },
        };
 
        for (const auto& cols : gGrads) {
            fShaders.push_back(SkGradientShader::MakeSweep(kWheelSize / 2, kWheelSize / 2,
                                                           cols, nullptr, std::size(cols),
                                                           SkTileMode::kRepeat, -90, 270, 0,
                                                           nullptr));
        }
    }

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

• third_party/skia/gm/colorfilters.cpp