FlutterAnimateView Class Reference

Inheritance diagram for FlutterAnimateView:

Public Member Functions
	FlutterAnimateView ()
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 23 of file FlutterAnimateSlide.cpp.

Constructor & Destructor Documentation

FlutterAnimateView()

FlutterAnimateView::FlutterAnimateView ( )

inline

Definition at line 25 of file FlutterAnimateSlide.cpp.

: fCurrTime(0), fResetTime(0) { fName = "FlutterAnimate"; }

Member Function Documentation

animate()

bool FlutterAnimateView::animate ( double  nanos )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 54 of file FlutterAnimateSlide.cpp.

                                        {
        fCurrTime = 1e-9 * nanos - fResetTime;
        if (fCurrTime > kDuration) {
            this->initChars();
            fResetTime = 1e-9 * nanos;
            fCurrTime = 0;
        }
 
        return true;
    }

draw()

void FlutterAnimateView::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 33 of file FlutterAnimateSlide.cpp.

                                         {
        SkFont font(fTypeface, 50);
        SkPaint paint;
 
        // rough center of each glyph
        static constexpr auto kMidX = 35;
        static constexpr auto kMidY = 50;
 
        canvas->clear(SK_ColorWHITE);
        for (int i = 0; i < kNumChars; ++i) {
            canvas->save();
            double rot = SkScalarInterp(fChars[i].fStartRotation, fChars[i].fEndRotation,
                                        fCurrTime/kDuration);
            canvas->translate(fChars[i].fPosition.fX + kMidX, fChars[i].fPosition.fY - kMidY);
            canvas->rotate(SkRadiansToDegrees(rot));
            canvas->translate(-35,+50);
            canvas->drawString(fChars[i].fChar, 0, 0, font, paint);
            canvas->restore();
        }
    }

load()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 28 of file FlutterAnimateSlide.cpp.

                                               {
        fTypeface = ToolUtils::TestFontMgr()->makeFromFile("/skimages/samplefont.ttf");
        initChars();
    }

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

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