LayersSlide Class Reference

Inheritance diagram for LayersSlide:

Public Member Functions
	LayersSlide ()
void	draw (SkCanvas *canvas) override
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	draw (SkCanvas *canvas)=0
virtual bool	animate (double nanos)
virtual void	load (SkScalar winWidth, SkScalar winHeight)
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 94 of file LayersSlide.cpp.

Constructor & Destructor Documentation

LayersSlide()

LayersSlide::LayersSlide ( )

inline

Definition at line 96 of file LayersSlide.cpp.

{ fName = "Layers"; }

Member Function Documentation

draw()

void LayersSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 98 of file LayersSlide.cpp.

                                         {
        canvas->drawColor(SK_ColorGRAY);
 
        if ((true)) {
            SkRect r;
            r.setWH(220, 120);
            SkPaint p;
            canvas->saveLayer(&r, &p);
            canvas->drawColor(0xFFFF0000);
            p.setAlpha(0);  // or 0
            p.setBlendMode(SkBlendMode::kSrc);
            canvas->drawOval(r, p);
            canvas->restore();
            return;
        }
 
        if ((false)) {
            SkRect r;
            r.setWH(220, 120);
            SkPaint p;
            p.setAlpha(0x88);
            p.setAntiAlias(true);
 
            if (true) {
                canvas->saveLayer(&r, &p);
                p.setColor(0xFFFF0000);
                canvas->drawOval(r, p);
                canvas->restore();
            }
 
            p.setColor(0xFF0000FF);
            r.offset(SkIntToScalar(20), SkIntToScalar(50));
            canvas->drawOval(r, p);
        }
 
        if ((false)) {
            SkPaint p;
            p.setAlpha(0x88);
            p.setAntiAlias(true);
 
            canvas->translate(SkIntToScalar(300), 0);
 
            SkRect r;
            r.setWH(220, 60);
 
            canvas->saveLayer(&r, &p);
 
            r.setWH(220, 120);
            p.setColor(SK_ColorBLUE);
            canvas->drawOval(r, p);
            canvas->restore();
            return;
        }
 
        test_fade(canvas);
    }

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

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