BackdropSlide Class Reference

Inheritance diagram for BackdropSlide:

Public Member Functions
	BackdropSlide ()
Public Member Functions inherited from ClickHandlerSlide
bool	onMouse (SkScalar x, SkScalar y, skui::InputState clickState, skui::ModifierKey modifierKeys) final
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	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

Protected Member Functions
void	load (SkScalar, SkScalar) override
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override
Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey modi) override
bool	onClick (Click *click) override

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 163 of file LayersSlide.cpp.

Constructor & Destructor Documentation

BackdropSlide()

BackdropSlide::BackdropSlide ( )

inline

Definition at line 170 of file LayersSlide.cpp.

                    {
        fName = "Backdrop";
    }

Member Function Documentation

animate()

bool BackdropSlide::animate ( double  nanos )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 204 of file LayersSlide.cpp.

                                        {
        fAngle = SkDoubleToScalar(fmod(1e-9 * nanos * 360 / 5, 360));
        return true;
    }

draw()

void BackdropSlide::draw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Implements Slide.

Definition at line 182 of file LayersSlide.cpp.

                                         {
        canvas->drawImage(fImage.get(), 0, 0);
 
        const SkScalar w = 250;
        const SkScalar h = 150;
        SkPath path;
        path.addOval(SkRect::MakeXYWH(-w/2, -h/2, w, h));
        SkMatrix m;
        m.setRotate(fAngle);
        m.postTranslate(fCenter.x(), fCenter.y());
        path.transform(m);
 
        canvas->clipPath(path, SkClipOp::kIntersect, true);
        const SkRect bounds = path.getBounds();
 
        SkPaint paint;
        paint.setAlpha(0xCC);
        canvas->saveLayer(SkCanvas::SaveLayerRec(&bounds, &paint, fFilter.get(), 0));
 
        canvas->restore();
    }

load()

void BackdropSlide::load ( SkScalar  , SkScalar    )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 175 of file LayersSlide.cpp.

                                           {
        fCenter.set(200, 150);
        fAngle = 0;
        fImage = ToolUtils::GetResourceAsImage("images/mandrill_512.png");
        fFilter = SkImageFilters::Dilate(8, 8, nullptr);
    }

onClick()

bool BackdropSlide::onClick ( Click *  )

inlineoverrideprotectedvirtual

Override to track clicks. Return true as long as you want to track the pen/mouse.

Implements ClickHandlerSlide.

Definition at line 214 of file LayersSlide.cpp.

                                        {
        fCenter = click->fCurr;
        return true;
    }

onFindClickHandler()

Click * BackdropSlide::onFindClickHandler ( SkScalar  x, SkScalar  y, skui::ModifierKey  modi  )

inlineoverrideprotectedvirtual

Return a Click object to handle the click. onClick will be called repeatedly with the latest mouse state tracked on the Click object until it returns false.

Implements ClickHandlerSlide.

Definition at line 210 of file LayersSlide.cpp.

                                                                                     {
        return new Click();
    }

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

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