PathEffectSlide Class Reference

Inheritance diagram for PathEffectSlide:

Public Member Functions
	PathEffectSlide ()
void	load (SkScalar w, SkScalar h) override
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	resize (SkScalar winWidth, SkScalar winHeight)
virtual void	unload ()
virtual bool	onChar (SkUnichar c)
virtual bool	onMouse (SkScalar x, SkScalar y, skui::InputState state, skui::ModifierKey modifiers)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
const SkString &	getName ()
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 71 of file PathEffectsSlide.cpp.

Constructor & Destructor Documentation

PathEffectSlide()

PathEffectSlide::PathEffectSlide ( )

inline

Definition at line 77 of file PathEffectsSlide.cpp.

: fPhase(0) { fName = "PathEffects"; }

Member Function Documentation

animate()

bool PathEffectSlide::animate ( double  nanos )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 131 of file PathEffectsSlide.cpp.

                                        {
        fPhase = TimeUtils::Scaled(1e-9 * nanos, 40);
        return true;
    }

draw()

void PathEffectSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 107 of file PathEffectsSlide.cpp.

                                         {
        canvas->clear(0xFFDDDDDD);
 
        SkPaint paint;
 
        canvas->translate(0, 50);
 
        paint.setColor(SK_ColorBLUE);
        paint.setPathEffect(make_pe(2, fPhase));
        canvas->drawPath(fPath, paint);
 
        canvas->translate(0, 50);
 
        paint.setARGB(0xFF, 0, 0xBB, 0);
        paint.setPathEffect(make_pe(3, fPhase));
        canvas->drawPath(fPath, paint);
 
        canvas->translate(0, 50);
 
        paint.setARGB(0xFF, 0, 0, 0);
        paint.setPathEffect(make_warp_pe(fPhase));
        canvas->drawPath(fPath, paint);
    }

load()

void PathEffectSlide::load ( SkScalar  w, SkScalar  h  )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 79 of file PathEffectsSlide.cpp.

                                               {
        SkRandom    rand;
        int         steps = 20;
        SkScalar    dist = SkIntToScalar(400);
        SkScalar    x = SkIntToScalar(20);
        SkScalar    y = SkIntToScalar(50);
 
        fPath.moveTo(x, y);
        for (int i = 0; i < steps; i++) {
            x += dist/steps;
            SkScalar tmpY = y + SkIntToScalar(rand.nextS() % 25);
            if (i == steps/2) {
                fPath.moveTo(x, tmpY);
            } else {
                fPath.lineTo(x, tmpY);
            }
        }
 
        {
            SkRect  oval;
            oval.setLTRB(20, 30, 100, 60);
            oval.offset(x, 0);
            fPath.addRoundRect(oval, SkIntToScalar(8), SkIntToScalar(8));
        }
 
        fClickPt.set(SkIntToScalar(200), SkIntToScalar(200));
    }

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

• third_party/skia/tools/viewer/PathEffectsSlide.cpp