VariableWidthStrokerSlide Class Reference

Inheritance diagram for VariableWidthStrokerSlide:

Public Member Functions
	VariableWidthStrokerSlide ()
void	load (SkScalar w, SkScalar h) override
void	resize (SkScalar w, SkScalar h) override
bool	onChar (SkUnichar uni) override
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 modi) override
bool	onClick (ClickHandlerSlide::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 1024 of file VariableWidthStrokerSlide.cpp.

Constructor & Destructor Documentation

VariableWidthStrokerSlide()

VariableWidthStrokerSlide::VariableWidthStrokerSlide ( )

inline

Definition at line 1026 of file VariableWidthStrokerSlide.cpp.

            : fShowHidden(true)
            , fShowSkeleton(true)
            , fShowStrokePoints(false)
            , fShowUI(false)
            , fDifferentInnerFunc(false)
            , fShowErrorCurve(false) {
        resetToDefaults();
 
        fPtsPaint.setAntiAlias(true);
        fPtsPaint.setStrokeWidth(10);
        fPtsPaint.setStrokeCap(SkPaint::kRound_Cap);
 
        fStrokePointsPaint.setAntiAlias(true);
        fStrokePointsPaint.setStrokeWidth(5);
        fStrokePointsPaint.setStrokeCap(SkPaint::kRound_Cap);
 
        fStrokePaint.setAntiAlias(true);
        fStrokePaint.setStyle(SkPaint::kStroke_Style);
        fStrokePaint.setColor(0x80FF0000);
 
        fNewFillPaint.setAntiAlias(true);
        fNewFillPaint.setColor(0x8000FF00);
 
        fHiddenPaint.setAntiAlias(true);
        fHiddenPaint.setStyle(SkPaint::kStroke_Style);
        fHiddenPaint.setColor(0xFF0000FF);
 
        fSkeletonPaint.setAntiAlias(true);
        fSkeletonPaint.setStyle(SkPaint::kStroke_Style);
        fSkeletonPaint.setColor(SK_ColorRED);
 
        fName = "VariableWidthStroker";
    }

Member Function Documentation

draw()

void VariableWidthStrokerSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 1100 of file VariableWidthStrokerSlide.cpp.

                                         {
        canvas->drawColor(0xFFEEEEEE);
 
        SkPath path;
        this->makePath(&path);
 
        fStrokePaint.setStrokeWidth(fWidth);
 
        // Elber-Cohen stroker result
        ScalarBezCurve distFnc = makeDistFnc(fDistFncs, fWidth);
        ScalarBezCurve distFncInner =
                fDifferentInnerFunc ? makeDistFnc(fDistFncsInner, fWidth) : distFnc;
        SkVarWidthStroker stroker;
        SkPath fillPath =
                stroker.getFillPath(path, fStrokePaint, distFnc, distFncInner, fLengthMetric);
        fillPath.setFillType(SkPathFillType::kWinding);
        canvas->drawPath(fillPath, fNewFillPaint);
 
        if (fShowHidden) {
            canvas->drawPath(fillPath, fHiddenPaint);
        }
 
        if (fShowSkeleton) {
            canvas->drawPath(path, fSkeletonPaint);
            canvas->drawPoints(SkCanvas::kPoints_PointMode, fPathPts.size(), fPathPts.data(),
                               fPtsPaint);
        }
 
        if (fShowStrokePoints) {
            drawStrokePoints(canvas, fillPath);
        }
 
        if (fShowUI) {
            drawUI();
        }
 
        if (fShowErrorCurve && viz::outerErr != nullptr) {
            SkPaint firstApproxPaint;
            firstApproxPaint.setStrokeWidth(4);
            firstApproxPaint.setStyle(SkPaint::kStroke_Style);
            firstApproxPaint.setColor(SK_ColorRED);
            canvas->drawPath(viz::outerFirstApprox, firstApproxPaint);
            drawErrorCurve(canvas, *viz::outerErr);
        }
    }

load()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 1061 of file VariableWidthStrokerSlide.cpp.

{ fWinSize = {w, h}; }

onChar()

bool VariableWidthStrokerSlide::onChar ( SkUnichar  uni )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 1065 of file VariableWidthStrokerSlide.cpp.

                                        {
        switch (uni) {
            case '0':
                this->toggle(fShowUI);
                return true;
            case '1':
                this->toggle(fShowSkeleton);
                return true;
            case '2':
                this->toggle(fShowHidden);
                return true;
            case '3':
                this->toggle(fShowStrokePoints);
                return true;
            case '4':
                this->toggle(fShowErrorCurve);
                return true;
            case '5':
                this->toggle(fLengthMetric);
                return true;
            case 'x':
                resetToDefaults();
                return true;
            case '-':
                fWidth -= 5;
                return true;
            case '=':
                fWidth += 5;
                return true;
            default:
                break;
        }
        return false;
    }

onClick()

bool VariableWidthStrokerSlide::onClick ( ClickHandlerSlide::Click *  )

inlineoverrideprotectedvirtual

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

Implements ClickHandlerSlide.

Definition at line 1161 of file VariableWidthStrokerSlide.cpp.

{ return false; }

onFindClickHandler()

Click * VariableWidthStrokerSlide::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 1147 of file VariableWidthStrokerSlide.cpp.

                                                                                     {
        const SkScalar tol = 4;
        const SkRect r = SkRect::MakeXYWH(x - tol, y - tol, tol * 2, tol * 2);
        for (size_t i = 0; i < fPathPts.size(); ++i) {
            if (r.intersects(SkRect::MakeXYWH(fPathPts[i].fX, fPathPts[i].fY, 1, 1))) {
                return new Click([this, i](Click* c) {
                    fPathPts[i] = c->fCurr;
                    return true;
                });
            }
        }
        return nullptr;
    }

resize()

void VariableWidthStrokerSlide::resize ( SkScalar  w, SkScalar  h  )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 1063 of file VariableWidthStrokerSlide.cpp.

{ fWinSize = {w, h}; }

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

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