LumaFilterGM Class Reference

Inheritance diagram for LumaFilterGM:

Protected Member Functions
void	onOnceBeforeDraw () override
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

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 103 of file lumafilter.cpp.

Member Function Documentation

getISize()

SkISize LumaFilterGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 121 of file lumafilter.cpp.

{ return SkISize::Make(600, 420); }

getName()

SkString LumaFilterGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 119 of file lumafilter.cpp.

{ return SkString("lumafilter"); }

onDraw()

void LumaFilterGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 123 of file lumafilter.cpp.

                                           {
        SkBlendMode modes[] = {
            SkBlendMode::kSrcOver,
            SkBlendMode::kDstOver,
            SkBlendMode::kSrcATop,
            SkBlendMode::kDstATop,
            SkBlendMode::kSrcIn,
            SkBlendMode::kDstIn,
        };
        struct {
            const sk_sp<SkShader>& fShader1;
            const sk_sp<SkShader>& fShader2;
        } shaders[] = {
            { nullptr, nullptr },
            { nullptr, fGr2 },
            { fGr1, nullptr },
            { fGr1, fGr2 },
        };
 
        SkScalar gridStep = kSize + 2 * kInset;
        for (size_t i = 0; i < std::size(modes); ++i) {
            draw_label(canvas, SkBlendMode_Name(modes[i]),
                       SkPoint::Make(gridStep * (0.5f + i), 20));
        }
 
        for (size_t i = 0; i < std::size(shaders); ++i) {
            canvas->save();
            canvas->translate(kInset, gridStep * i + 30);
            for (size_t m = 0; m < std::size(modes); ++m) {
                draw_scene(canvas, fFilter, modes[m], shaders[i].fShader1,
                           shaders[i].fShader2);
                canvas->translate(gridStep, 0);
            }
            canvas->restore();
        }
    }

onOnceBeforeDraw()

void LumaFilterGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 105 of file lumafilter.cpp.

                                     {
        SkColor  g1Colors[] = { kColor1, SkColorSetA(kColor1, 0x20) };
        SkColor  g2Colors[] = { kColor2, SkColorSetA(kColor2, 0x20) };
        SkPoint  g1Points[] = { { 0, 0 }, { 0,     100 } };
        SkPoint  g2Points[] = { { 0, 0 }, { kSize, 0   } };
        SkScalar pos[] = { 0.2f, 1.0f };
 
        fFilter = SkLumaColorFilter::Make();
        fGr1 = SkGradientShader::MakeLinear(g1Points, g1Colors, pos, std::size(g1Colors),
                                            SkTileMode::kClamp);
        fGr2 = SkGradientShader::MakeLinear(g2Points, g2Colors, pos, std::size(g2Colors),
                                            SkTileMode::kClamp);
    }

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

• third_party/skia/gm/lumafilter.cpp