ScaledStrokesGM Class Reference

Inheritance diagram for ScaledStrokesGM:

Public Member Functions
	ScaledStrokesGM ()
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 SkISize	getISize ()=0
virtual SkString	getName () const =0
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 void	onDraw (SkCanvas *)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Static Protected Member Functions
static void	draw_path (SkScalar size, SkCanvas *canvas, SkPaint paint)

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 17 of file scaledstrokes.cpp.

Constructor & Destructor Documentation

ScaledStrokesGM()

ScaledStrokesGM::ScaledStrokesGM ( )

inline

Definition at line 19 of file scaledstrokes.cpp.

{}

Member Function Documentation

draw_path()

static void ScaledStrokesGM::draw_path ( SkScalar  size, SkCanvas *  canvas, SkPaint  paint  )

inlinestaticprotected

Definition at line 26 of file scaledstrokes.cpp.

                                                                          {
        SkScalar c = 0.551915024494f * size;
        SkPathBuilder path;
        path.moveTo(0.0f, size);
        path.cubicTo(c, size, size, c, size, 0.0f);
        path.cubicTo(size, -c, c, -size, 0.0f, -size);
        path.cubicTo(-c, -size, -size, -c, -size, 0.0f);
        path.cubicTo(-size, c, -c, size, 0.0f, size);
        canvas->drawPath(path.detach(), paint);
    }

getISize()

SkISize ScaledStrokesGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 24 of file scaledstrokes.cpp.

{ return SkISize::Make(640, 320); }

getName()

SkString ScaledStrokesGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 22 of file scaledstrokes.cpp.

{ return SkString("scaledstrokes"); }

onDraw()

void ScaledStrokesGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 37 of file scaledstrokes.cpp.

                                           {
        SkPaint paint;
        SkPath path;
        paint.setStyle(SkPaint::Style::kStroke_Style);
        canvas->translate(5.0f, 5.0f);
        const SkScalar size = 60.0f;
        for (int i = 0; i < 2; i++) {
            paint.setAntiAlias(i == 1);
            for (int j = 0; j < 4; j++) {
                SkScalar scale = 4.0f - j;
                paint.setStrokeWidth(4.0f / scale);
                canvas->save();
                canvas->translate(size / 2.0f, size / 2.0f);
                canvas->scale(scale, scale);
                draw_path(size / 2.0f / scale, canvas, paint);
                canvas->restore();
 
                canvas->save();
                canvas->translate(size / 2.0f, 80.0f + size / 2.0f);
                canvas->scale(scale, scale);
                canvas->drawCircle(0.0f, 0.0f, size / 2.0f / scale, paint);
                canvas->restore();
 
                canvas->save();
                canvas->translate(0.0f, 160.0f);
                canvas->scale(scale, scale);
                canvas->drawRect(SkRect::MakeXYWH(0.0f, 0.0f, size / scale, size / scale), paint);
                canvas->restore();
 
                canvas->save();
                canvas->translate(0.0f, 240.0f);
                canvas->scale(scale, scale);
                canvas->drawLine(0.0f, 0.0f, size / scale, size / scale, paint);
                canvas->restore();
 
                canvas->translate(80.0f, 0.0f);
            }
        }
 
    }

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

• third_party/skia/gm/scaledstrokes.cpp