PathSlide Class Reference

Inheritance diagram for PathSlide:

Public Member Functions
	PathSlide ()
void	load (SkScalar w, SkScalar h) override
void	drawPath (SkCanvas *canvas, const SkPath &path, SkPaint::Join j)
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override
Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey modi) override
bool	onClick (ClickHandlerSlide::Click *) 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	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

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 76 of file PathSlide.cpp.

Constructor & Destructor Documentation

PathSlide()

PathSlide::PathSlide ( )

inline

Definition at line 83 of file PathSlide.cpp.

                {
        fPrevSecs = 0;
        fName = "Paths";
    }

Member Function Documentation

animate()

bool PathSlide::animate ( double  nanos )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 172 of file PathSlide.cpp.

                                        {
        SkScalar currSecs = TimeUtils::Scaled(1e-9 * nanos, 100);
        SkScalar delta = currSecs - fPrevSecs;
        fPrevSecs = currSecs;
 
        fStroke += fDStroke * delta;
        if (fStroke > fMaxStroke || fStroke < fMinStroke) {
            fDStroke = -fDStroke;
        }
        return true;
    }

draw()

void PathSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 149 of file PathSlide.cpp.

                                         {
        canvas->clear(0xFFDDDDDD);
 
        canvas->translate(50, 50);
 
        static const SkPaint::Join gJoins[] = {
            SkPaint::kBevel_Join,
            SkPaint::kMiter_Join,
            SkPaint::kRound_Join
        };
 
        for (size_t i = 0; i < std::size(gJoins); i++) {
            canvas->save();
            for (size_t j = 0; j < std::size(fPath); j++) {
                this->drawPath(canvas, fPath[j], gJoins[i]);
                canvas->translate(200, 0);
            }
            canvas->restore();
 
            canvas->translate(0, 200);
        }
    }

drawPath()

void PathSlide::drawPath ( SkCanvas *  canvas, const SkPath &  path, SkPaint::Join  j  )

inline

Definition at line 126 of file PathSlide.cpp.

                                                                       {
        SkPaint paint;
 
        paint.setAntiAlias(true);
        paint.setStyle(SkPaint::kStroke_Style);
        paint.setStrokeJoin(j);
        paint.setStrokeWidth(fStroke);
 
        if (fShowHairline) {
            SkPath fill;
 
            skpathutils::FillPathWithPaint(path, paint, &fill);
            paint.setStrokeWidth(0);
            canvas->drawPath(fill, paint);
        } else {
            canvas->drawPath(path, paint);
        }
 
        paint.setColor(SK_ColorRED);
        paint.setStrokeWidth(0);
        canvas->drawPath(path, paint);
    }

load()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 88 of file PathSlide.cpp.

                                               {
        test_cubic();
        test_cubic2();
 
        fShowHairline = false;
 
        fDStroke = 1;
        fStroke = 10;
        fMinStroke = 10;
        fMaxStroke = 180;
 
        const SkScalar V = 85;
 
        fPath[0].moveTo(40, 70);
        fPath[0].lineTo(70, 70 + SK_ScalarHalf);
        fPath[0].lineTo(110, 70);
 
        fPath[1].moveTo(40, 70);
        fPath[1].lineTo(70, 70 - SK_ScalarHalf);
        fPath[1].lineTo(110, 70);
 
        fPath[2].moveTo(V, V);
        fPath[2].lineTo(50, V);
        fPath[2].lineTo(50, 50);
 
        fPath[3].moveTo(50, 50);
        fPath[3].lineTo(50, V);
        fPath[3].lineTo(V, V);
 
        fPath[4].moveTo(50, 50);
        fPath[4].lineTo(50, V);
        fPath[4].lineTo(52, 50);
 
        fPath[5].moveTo(52, 50);
        fPath[5].lineTo(50, V);
        fPath[5].lineTo(50, 50);
    }

onClick()

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

inlineoverridevirtual

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

Implements ClickHandlerSlide.

Definition at line 189 of file PathSlide.cpp.

{ return false; }

onFindClickHandler()

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

inlineoverridevirtual

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 184 of file PathSlide.cpp.

                                                                                     {
        fShowHairline = !fShowHairline;
        return nullptr;
    }

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

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