ManyRectsSlide Class Reference

Inheritance diagram for ManyRectsSlide:

Public Member Functions
	ManyRectsSlide ()
void	draw (SkCanvas *canvas) override
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
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

Animated sample used to develop a predecessor of GrDrawOp combining.

Definition at line 16 of file ManyRectsSlide.cpp.

Constructor & Destructor Documentation

ManyRectsSlide()

ManyRectsSlide::ManyRectsSlide ( )

inline

Definition at line 23 of file ManyRectsSlide.cpp.

{ fName = "ManyRects"; }

Member Function Documentation

draw()

void ManyRectsSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 25 of file ManyRectsSlide.cpp.

                                         {
        SkISize dsize = canvas->getBaseLayerSize();
        canvas->clear(0xFFF0E0F0);
 
        for (int i = 0; i < N; ++i) {
            SkRect rect = SkRect::MakeWH(SkIntToScalar(fRandom.nextRangeU(10, 100)),
                                         SkIntToScalar(fRandom.nextRangeU(10, 100)));
            int x = fRandom.nextRangeU(0, dsize.fWidth);
            int y = fRandom.nextRangeU(0, dsize.fHeight);
            canvas->save();
 
            canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
            // Uncomment to test rotated rect draw combining.
            if ((false)) {
                SkMatrix rotate;
                rotate.setRotate(fRandom.nextUScalar1() * 360,
                                 SkIntToScalar(x) + SkScalarHalf(rect.fRight),
                                 SkIntToScalar(y) + SkScalarHalf(rect.fBottom));
                canvas->concat(rotate);
            }
            SkRect clipRect = rect;
            // This clip will always contain the entire rect. It's here to give the GPU op combining
            // code a little more challenge.
            clipRect.outset(10, 10);
            canvas->clipRect(clipRect);
            SkPaint paint;
            paint.setColor(fRandom.nextU());
            canvas->drawRect(rect, paint);
            canvas->restore();
        }
    }

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

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