QuadStrokerSlide Class Reference

Inheritance diagram for QuadStrokerSlide:

Classes
class	MyClick

Public Member Functions
	QuadStrokerSlide ()
bool	onChar (SkUnichar uni) override
void	load (SkScalar w, SkScalar h) override
void	resize (SkScalar w, SkScalar h) 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 (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 112 of file QuadStrokerSlide.cpp.

Constructor & Destructor Documentation

QuadStrokerSlide()

QuadStrokerSlide::QuadStrokerSlide ( )

inline

Definition at line 156 of file QuadStrokerSlide.cpp.

                       {
        fPts[0].set(50, 200);  // cubic
        fPts[1].set(50, 100);
        fPts[2].set(150, 50);
        fPts[3].set(300, 50);
 
        fPts[4].set(350, 200);  // conic
        fPts[5].set(350, 100);
        fPts[6].set(450, 50);
 
        fPts[7].set(150, 300);  // quad
        fPts[8].set(150, 200);
        fPts[9].set(250, 150);
 
        fPts[10].set(250, 200);  // arc
        fPts[11].set(250, 300);
        fPts[12].set(150, 350);
 
        fPts[13].set(200, 200); // rrect
        fPts[14].set(400, 400);
 
        fPts[15].set(250, 250);  // oval
        fPts[16].set(450, 450);
 
        fText = "a";
        fTextSize = 12;
        fWidth = 50;
        fDWidth = 0.25f;
        fWeight = 1;
        fRadius = 150;
 
        fCubicButton.fLabel = 'C';
        fCubicButton.fEnabled = false;
        fConicButton.fLabel = 'K';
        fConicButton.fEnabled = false;
        fQuadButton.fLabel = 'Q';
        fQuadButton.fEnabled = false;
        fArcButton.fLabel = 'A';
        fArcButton.fEnabled = true;
        fRRectButton.fLabel = 'R';
        fRRectButton.fEnabled = false;
        fCircleButton.fLabel = 'O';
        fCircleButton.fEnabled = true;
        fCircleButton.fFill = true;
        fTextButton.fLabel = 'T';
        fTextButton.fEnabled = false;
        fAnimate = false;
        setAsNeeded();
        fName = "QuadStroker";
    }

Member Function Documentation

draw()

void QuadStrokerSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 232 of file QuadStrokerSlide.cpp.

                                         {
        canvas->clear(SK_ColorLTGRAY);
 
        SkPath path;
        SkScalar width = fWidth;
 
        if (fCubicButton.fEnabled) {
            path.moveTo(fPts[0]);
            path.cubicTo(fPts[1], fPts[2], fPts[3]);
            setForSingles();
            draw_stroke(canvas, path, width, 950, false);
        }
 
        if (fConicButton.fEnabled) {
            path.reset();
            path.moveTo(fPts[4]);
            path.conicTo(fPts[5], fPts[6], fWeight);
            setForSingles();
            draw_stroke(canvas, path, width, 950, false);
        }
 
        if (fQuadButton.fEnabled) {
            path.reset();
            path.moveTo(fPts[7]);
            path.quadTo(fPts[8], fPts[9]);
            setForSingles();
            draw_stroke(canvas, path, width, 950, false);
        }
 
        if (fArcButton.fEnabled) {
            path.reset();
            path.moveTo(fPts[10]);
            path.arcTo(fPts[11], fPts[12], fRadius);
            setForGeometry();
            draw_stroke(canvas, path, width, 950, false);
            SkPath pathPts;
            pathPts.moveTo(fPts[10]);
            pathPts.lineTo(fPts[11]);
            pathPts.lineTo(fPts[12]);
            draw_points(canvas, pathPts, SK_ColorDKGRAY, true);
        }
 
        if (fRRectButton.fEnabled) {
            SkScalar rad = 32;
            SkRect r;
            r.setBounds(&fPts[13], 2);
            path.reset();
            SkRRect rr;
            rr.setRectXY(r, rad, rad);
            path.addRRect(rr);
            setForGeometry();
            draw_stroke(canvas, path, width, 950, false);
 
            path.reset();
            SkRRect rr2;
            rr.inset(width/2, width/2, &rr2);
            path.addRRect(rr2, SkPathDirection::kCCW);
            rr.inset(-width/2, -width/2, &rr2);
            path.addRRect(rr2, SkPathDirection::kCW);
            SkPaint paint;
            paint.setAntiAlias(true);
            paint.setColor(0x40FF8844);
            canvas->drawPath(path, paint);
        }
 
        if (fCircleButton.fEnabled) {
            path.reset();
            SkRect r;
            r.setBounds(&fPts[15], 2);
            path.addOval(r);
            setForGeometry();
            if (fCircleButton.fFill) {
                if (fArcButton.fEnabled) {
                    SkPoint center;
                    if (arcCenter(&center)) {
                        r.setLTRB(center.fX - fRadius, center.fY - fRadius,
                                  center.fX + fRadius, center.fY + fRadius);
                    }
                }
                draw_fill(canvas, r, width);
            } else {
                draw_stroke(canvas, path, width, 950, false);
            }
        }
 
        if (fTextButton.fEnabled) {
            path.reset();
            SkFont font = ToolUtils::DefaultFont();
            font.setSize(fTextSize);
            SkTextUtils::GetPath(fText.c_str(), fText.size(), SkTextEncoding::kUTF8,
                                 0, fTextSize, font, &path);
            setForText();
            draw_stroke(canvas, path, width * fWidthScale / fTextSize, fTextSize, true);
        }
 
        if (fAnimate) {
            fWidth += fDWidth;
            if (fDWidth > 0 && fWidth > kWidthMax) {
                fDWidth = -fDWidth;
            } else if (fDWidth < 0 && fWidth < kWidthMin) {
                fDWidth = -fDWidth;
            }
        }
        setAsNeeded();
        if (fConicButton.fEnabled) {
            draw_control(canvas, fWeightControl, fWeight, 0, 5, "weight");
        }
        if (fArcButton.fEnabled) {
            draw_control(canvas, fRadiusControl, fRadius, 0, 500, "radius");
        }
#ifdef SK_DEBUG
        draw_control(canvas, fErrorControl, gDebugStrokerError, kStrokerErrorMin, kStrokerErrorMax,
                     "error");
#endif
        draw_control(canvas, fWidthControl, fWidth * fWidthScale, kWidthMin * fWidthScale,
                     kWidthMax * fWidthScale, "width");
        draw_button(canvas, fQuadButton);
        draw_button(canvas, fCubicButton);
        draw_button(canvas, fConicButton);
        draw_button(canvas, fArcButton);
        draw_button(canvas, fRRectButton);
        draw_button(canvas, fCircleButton);
        draw_button(canvas, fTextButton);
    }

load()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 228 of file QuadStrokerSlide.cpp.

{ this->layout(w, h); }

onChar()

bool QuadStrokerSlide::onChar ( SkUnichar  uni )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 207 of file QuadStrokerSlide.cpp.

                                        {
        if (fTextButton.fEnabled) {
            switch (uni) {
                case ' ':
                    fText = "";
                    break;
                case '-':
                    fTextSize = std::max(1.0f, fTextSize - 1);
                    break;
                case '+':
                case '=':
                    fTextSize += 1;
                    break;
                default:
                    fText.appendUnichar(uni);
            }
            return true;
        }
        return false;
    }

onClick()

bool QuadStrokerSlide::onClick ( Click *  )

inlineoverrideprotectedvirtual

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

Implements ClickHandlerSlide.

Definition at line 417 of file QuadStrokerSlide.cpp.

                                        {
        int index = ((MyClick*)click)->fIndex;
        if (index < (int) std::size(fPts)) {
            fPts[index].offset(click->fCurr.fX - click->fPrev.fX,
                               click->fCurr.fY - click->fPrev.fY);
        } else if (index == (int) std::size(fPts) + 1) {
            fWeight = MapScreenYtoValue(click->fCurr.fY, fWeightControl, 0, 5);
        } else if (index == (int) std::size(fPts) + 2) {
            fRadius = MapScreenYtoValue(click->fCurr.fY, fRadiusControl, 0, 500);
        }
#ifdef SK_DEBUG
        else if (index == (int) std::size(fPts) + 3) {
            gDebugStrokerError = std::max(FLT_EPSILON, MapScreenYtoValue(click->fCurr.fY,
                                                                         fErrorControl, kStrokerErrorMin, kStrokerErrorMax));
            gDebugStrokerErrorSet = true;
        }
#endif
        else if (index == (int) std::size(fPts) + 4) {
            fWidth = std::max(FLT_EPSILON, MapScreenYtoValue(click->fCurr.fY, fWidthControl,
                                                             kWidthMin, kWidthMax));
            fAnimate = fWidth <= kWidthMin;
        }
        return true;
    }

onFindClickHandler()

Click * QuadStrokerSlide::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 363 of file QuadStrokerSlide.cpp.

                                                                                     {
        for (size_t i = 0; i < std::size(fPts); ++i) {
            if (hittest(fPts[i], x, y)) {
                return new MyClick((int)i);
            }
        }
        const SkRect& rectPt = SkRect::MakeXYWH(x, y, 1, 1);
        if (fWeightControl.contains(rectPt)) {
            return new MyClick((int) std::size(fPts) + 1);
        }
        if (fRadiusControl.contains(rectPt)) {
            return new MyClick((int) std::size(fPts) + 2);
        }
#ifdef SK_DEBUG
        if (fErrorControl.contains(rectPt)) {
            return new MyClick((int) std::size(fPts) + 3);
        }
#endif
        if (fWidthControl.contains(rectPt)) {
            return new MyClick((int) std::size(fPts) + 4);
        }
        if (fCubicButton.fBounds.contains(rectPt)) {
            fCubicButton.fEnabled ^= true;
            return new MyClick((int) std::size(fPts) + 5);
        }
        if (fConicButton.fBounds.contains(rectPt)) {
            fConicButton.fEnabled ^= true;
            return new MyClick((int) std::size(fPts) + 6);
        }
        if (fQuadButton.fBounds.contains(rectPt)) {
            fQuadButton.fEnabled ^= true;
            return new MyClick((int) std::size(fPts) + 7);
        }
        if (fArcButton.fBounds.contains(rectPt)) {
            fArcButton.fEnabled ^= true;
            return new MyClick((int) std::size(fPts) + 8);
        }
        if (fRRectButton.fBounds.contains(rectPt)) {
            fRRectButton.fEnabled ^= true;
            return new MyClick((int) std::size(fPts) + 9);
        }
        if (fCircleButton.fBounds.contains(rectPt)) {
            bool wasEnabled = fCircleButton.fEnabled;
            fCircleButton.fEnabled = !fCircleButton.fFill;
            fCircleButton.fFill = wasEnabled && !fCircleButton.fFill;
            return new MyClick((int) std::size(fPts) + 10);
        }
        if (fTextButton.fBounds.contains(rectPt)) {
            fTextButton.fEnabled ^= true;
            return new MyClick((int) std::size(fPts) + 11);
        }
        return nullptr;
    }

resize()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 230 of file QuadStrokerSlide.cpp.

{ this->layout(w, h); }

---

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

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