XferSlide Class Reference

Inheritance diagram for XferSlide:

Public Member Functions
	XferSlide ()
void	draw (SkCanvas *canvas) override
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	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

Protected Member Functions
Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey) override
bool	onClick (Click *click) override
virtual Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey modi)=0
virtual bool	onClick (Click *)=0

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 109 of file XferSlide.cpp.

Constructor & Destructor Documentation

XferSlide()

XferSlide::XferSlide ( )

inline

Definition at line 111 of file XferSlide.cpp.

                {
        const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorBLACK };
        for (int i = 0; i < N; ++i) {
            fDrs[i].reset(new CircDrawable(200, colors[i]));
            fDrs[i]->fLoc.set(100.f + i * 100, 100.f + i * 100);
            fDrs[i]->fMode = SkBlendMode::kSrcOver;
        }
        fSelected = nullptr;
 
        this->addButtons();
        fName = "XferDemo";
    }

Member Function Documentation

draw()

void XferSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 124 of file XferSlide.cpp.

                                         {
        for (int i = 0; i < N_Modes; ++i) {
            fModeButtons[i].draw(canvas);
        }
 
        SkPaint paint;
        if (fSelected) {
            for (int i = 0; i < N_Modes; ++i) {
                if (fSelected->fMode == gModes[i]) {
                    canvas->drawRect(fModeRect[i], paint);
                    break;
                }
            }
        }
 
        canvas->saveLayer(nullptr, nullptr);
        for (int i = 0; i < N; ++i) {
            fDrs[i]->draw(canvas);
        }
        canvas->restore();
    }

onClick()

bool XferSlide::onClick ( Click *  )

inlineoverrideprotectedvirtual

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

Implements ClickHandlerSlide.

Definition at line 166 of file XferSlide.cpp.

                                        {
        int32_t mode;
        if (click->fMeta.findS32("mode", &mode)) {
            if (fSelected && skui::InputState::kUp == click->fState) {
                fSelected->fMode = gModes[mode];
            }
        } else {
            fSelected->fLoc.fX += click->fCurr.fX - click->fPrev.fX;
            fSelected->fLoc.fY += click->fCurr.fY - click->fPrev.fY;
        }
        return true;
    }

onFindClickHandler()

Click * XferSlide::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 147 of file XferSlide.cpp.

                                                                                {
        // Check mode buttons first
        for (int i = 0; i < N_Modes; ++i) {
            if (fModeButtons[i].hitTest(x, y)) {
                Click* click = new Click();
                click->fMeta.setS32("mode", i);
                return click;
            }
        }
        fSelected = nullptr;
        for (int i = N - 1; i >= 0; --i) {
            if (fDrs[i]->hitTest(x, y)) {
                fSelected = fDrs[i].get();
                break;
            }
        }
        return fSelected ? new Click() : nullptr;
    }

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

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