ShadowsSlide Class Reference

Inheritance diagram for ShadowsSlide:

Public Member Functions
	ShadowsSlide ()
void	load (SkScalar w, SkScalar h) override
bool	onChar (SkUnichar uni) override
bool	animate (double nanos) override
void	draw (SkCanvas *canvas) override
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

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 24 of file AndroidShadowsSlide.cpp.

Constructor & Destructor Documentation

ShadowsSlide()

ShadowsSlide::ShadowsSlide ( )

inline

Definition at line 52 of file AndroidShadowsSlide.cpp.

{ fName = "AndroidShadows"; }

Member Function Documentation

animate()

bool ShadowsSlide::animate ( double  nanos )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 151 of file AndroidShadowsSlide.cpp.

                                        {
        fAnimTranslate = TimeUtils::PingPong(1e-9 * nanos, 30, 0, 125, -125);
        fAnimAngle = TimeUtils::PingPong(1e-9 * nanos, 15, 0, 0, 20);
        if (fDoAlphaAnimation) {
            fAnimAlpha = TimeUtils::PingPong(1e-9 * nanos, 5, 0, 1, 0);
        }
        return true;
    }

draw()

void ShadowsSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 160 of file AndroidShadowsSlide.cpp.

                                         {
        canvas->drawColor(0xFFDDDDDD);
 
        const SkScalar kLightWidth = 800;
        const SkScalar kAmbientAlpha = 0.039f;
        const SkScalar kSpotAlpha = 0.19f;
 
        SkPaint paint;
        paint.setAntiAlias(true);
 
        SkPoint3 lightPos = fLightPos;
        SkPoint3 zPlaneParams = SkPoint3::Make(0, 0, 0);
 
        paint.setColor(SK_ColorWHITE);
        canvas->translate(200, 90);
        zPlaneParams.fZ = std::max(1.0f, 2 + fZDelta);
        this->drawShadowedPath(canvas, fRRPath, zPlaneParams, paint, fAnimAlpha*kAmbientAlpha,
                               lightPos, kLightWidth, fAnimAlpha*kSpotAlpha);
 
        paint.setColor(SK_ColorRED);
        canvas->translate(250, 0);
        zPlaneParams.fZ = std::max(1.0f, 8 + fZDelta);
        this->drawShadowedPath(canvas, fRectPath, zPlaneParams, paint, fAnimAlpha*kAmbientAlpha,
                               lightPos, kLightWidth, fAnimAlpha*kSpotAlpha);
 
        paint.setColor(SK_ColorBLUE);
        canvas->translate(-250, 110);
        zPlaneParams.fZ = std::max(1.0f, 12 + fZDelta);
        this->drawShadowedPath(canvas, fCirclePath, zPlaneParams, paint, fAnimAlpha*kAmbientAlpha,
                               lightPos, kLightWidth, fAnimAlpha*0.5f);
 
        paint.setColor(SK_ColorGREEN);
        canvas->translate(250, 0);
        zPlaneParams.fZ = std::max(1.0f, 64 + fZDelta);
        this->drawShadowedPath(canvas, fRRPath, zPlaneParams, paint, fAnimAlpha*kAmbientAlpha,
                               lightPos, kLightWidth, fAnimAlpha*kSpotAlpha);
 
        paint.setColor(SK_ColorYELLOW);
        canvas->translate(-250, 110);
        zPlaneParams.fZ = std::max(1.0f, 8 + fZDelta);
        this->drawShadowedPath(canvas, fFunkyRRPath, zPlaneParams, paint, fAnimAlpha*kAmbientAlpha,
                               lightPos, kLightWidth, fAnimAlpha*kSpotAlpha);
 
        paint.setColor(SK_ColorCYAN);
        canvas->translate(250, 0);
        zPlaneParams.fZ = std::max(1.0f, 16 + fZDelta);
        this->drawShadowedPath(canvas, fCubicPath, zPlaneParams, paint, fAnimAlpha*kAmbientAlpha,
                               lightPos, kLightWidth, fAnimAlpha*kSpotAlpha);
 
        paint.setColor(SK_ColorWHITE);
        canvas->translate(250, -180);
        zPlaneParams.fZ = std::max(1.0f, 8 + fZDelta);
        this->drawShadowedPath(canvas, fStarPath, zPlaneParams, paint,
                               kAmbientAlpha, lightPos, kLightWidth, kSpotAlpha);
 
        paint.setColor(SK_ColorWHITE);
        canvas->translate(150, 0);
        zPlaneParams.fZ = std::max(1.0f, 2 + fZDelta);
        this->drawShadowedPath(canvas, fNotchPath, zPlaneParams, paint,
                               kAmbientAlpha, lightPos, kLightWidth, kSpotAlpha);
 
        paint.setColor(SK_ColorWHITE);
        canvas->translate(200, 0);
        zPlaneParams.fZ = std::max(1.0f, 16 + fZDelta);
        this->drawShadowedPath(canvas, fTabPath, zPlaneParams, paint,
                               kAmbientAlpha, lightPos, kLightWidth, kSpotAlpha);
 
        // circular reveal
        SkPath tmpPath;
        SkPath tmpClipPath;
        tmpClipPath.addCircle(fAnimTranslate, 0, 60);
        Op(fSquareRRectPath, tmpClipPath, kIntersect_SkPathOp, &tmpPath);
 
        paint.setColor(SK_ColorMAGENTA);
        canvas->translate(-725, 240);
        zPlaneParams.fZ = std::max(1.0f, 32 + fZDelta);
        this->drawShadowedPath(canvas, tmpPath, zPlaneParams, paint, .1f,
                               lightPos, kLightWidth, .5f);
 
        // path ops bug
        SkPath tmpClipPathBug;
        tmpClipPathBug.addCircle(88.0344925f, 0, 60);
        Op(fSquareRRectPath, tmpClipPathBug, kIntersect_SkPathOp, &tmpPath);
 
        canvas->translate(250, 0);
        zPlaneParams.fZ = std::max(1.0f, 32 + fZDelta);
        this->drawShadowedPath(canvas, tmpPath, zPlaneParams, paint, .1f,
                               lightPos, kLightWidth, .5f);
 
        // perspective paths
        SkPoint pivot = SkPoint::Make(fWideRectPath.getBounds().width()/2,
                                      fWideRectPath.getBounds().height()/2);
        SkPoint translate = SkPoint::Make(100, 450);
        paint.setColor(SK_ColorWHITE);
        Sk3DView view;
        view.save();
        view.rotateX(fAnimAngle);
        SkMatrix persp;
        view.getMatrix(&persp);
        persp.preTranslate(-pivot.fX, -pivot.fY);
        persp.postTranslate(pivot.fX + translate.fX, pivot.fY + translate.fY);
        canvas->setMatrix(persp);
        SkScalar radians = SkDegreesToRadians(fAnimAngle);
        zPlaneParams = SkPoint3::Make(0,
                                      SkScalarSin(radians),
                                      std::max(1.0f, 16 + fZDelta) - SkScalarSin(radians)*pivot.fY);
        this->drawShadowedPath(canvas, fWideRectPath, zPlaneParams, paint, .1f,
                               lightPos, kLightWidth, .5f);
 
        pivot = SkPoint::Make(fWideOvalPath.getBounds().width() / 2,
                              fWideOvalPath.getBounds().height() / 2);
        translate = SkPoint::Make(100, 600);
        view.restore();
        view.save();
        view.rotateY(fAnimAngle);
        view.getMatrix(&persp);
        persp.preTranslate(-pivot.fX, -pivot.fY);
        persp.postTranslate(pivot.fX + translate.fX, pivot.fY + translate.fY);
        canvas->setMatrix(persp);
        zPlaneParams = SkPoint3::Make(-SkScalarSin(radians),
                                      0,
                                      std::max(1.0f, 32 + fZDelta) + SkScalarSin(radians)*pivot.fX);
        this->drawShadowedPath(canvas, fWideOvalPath, zPlaneParams, paint, .1f,
                               lightPos, kLightWidth, .5f);
 
        pivot = SkPoint::Make(fStarPath.getBounds().width() / 2,
                              fStarPath.getBounds().height() / 2);
        translate = SkPoint::Make(700, 250);
        view.restore();
        view.rotateY(fAnimAngle);
        view.getMatrix(&persp);
        persp.preTranslate(-pivot.fX, -pivot.fY);
        persp.postTranslate(pivot.fX + translate.fX, pivot.fY + translate.fY);
        canvas->setMatrix(persp);
        zPlaneParams = SkPoint3::Make(-SkScalarSin(radians),
                                      0,
                                      std::max(1.0f, 8 + fZDelta) + SkScalarSin(radians)*pivot.fX);
        this->drawShadowedPath(canvas, fStarPath, zPlaneParams, paint, .1f,
                               lightPos, kLightWidth, .5f);
    }

load()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 54 of file AndroidShadowsSlide.cpp.

                                               {
        fCirclePath.addCircle(0, 0, 50);
        fRectPath.addRect(SkRect::MakeXYWH(-100, -50, 200, 100));
        fRRPath.addRRect(SkRRect::MakeRectXY(SkRect::MakeXYWH(-100, -50, 200, 100), 4, 4));
        fFunkyRRPath.addRoundRect(SkRect::MakeXYWH(-50, -50, SK_Scalar1 * 100, SK_Scalar1 * 100),
                                  40 * SK_Scalar1, 20 * SK_Scalar1,
                                  SkPathDirection::kCW);
        fCubicPath.cubicTo(100 * SK_Scalar1, 50 * SK_Scalar1,
                           20 * SK_Scalar1, 100 * SK_Scalar1,
                           0 * SK_Scalar1, 0 * SK_Scalar1);
        fStarPath.moveTo(0.0f, -50.0f);
        fStarPath.lineTo(14.43f, -25.0f);
        fStarPath.lineTo(43.30f, -25.0f);
        fStarPath.lineTo(28.86f, 0.0f);
        fStarPath.lineTo(43.30f, 25.0f);
        fStarPath.lineTo(14.43f, 25.0f);
        fStarPath.lineTo(0.0f, 50.0f);
        fStarPath.lineTo(-14.43f, 25.0f);
        fStarPath.lineTo(-43.30f, 25.0f);
        fStarPath.lineTo(-28.86f, 0.0f);
        fStarPath.lineTo(-43.30f, -25.0f);
        fStarPath.lineTo(-14.43f, -25.0f);
        fSquareRRectPath.addRRect(SkRRect::MakeRectXY(SkRect::MakeXYWH(-50, -50, 100, 100),
                                                      10, 10));
        fWideRectPath.addRect(SkRect::MakeXYWH(0, 0, 630, 70));
        fWideOvalPath.addOval(SkRect::MakeXYWH(0, 0, 630, 70));
 
        fNotchPath.moveTo(0, 80);
        fNotchPath.arcTo(SkRect::MakeLTRB(-20, 80, 20, 120), -90, -90, false);
        fNotchPath.lineTo(-75, 100);
        fNotchPath.lineTo(-75, -100);
        fNotchPath.lineTo(75, -100);
        fNotchPath.lineTo(75, 100);
        fNotchPath.arcTo(SkRect::MakeLTRB(-20, 80, 20, 120), 0, -90, false);
 
        fTabPath.moveTo(-75, -100);
        fTabPath.lineTo(75, -100);
        fTabPath.lineTo(75, 100);
        fTabPath.arcTo(SkRect::MakeLTRB(-20, 80, 20, 120), 0, 90, false);
        fTabPath.arcTo(SkRect::MakeLTRB(-20, 80, 20, 120), 90, 90, false);
        fTabPath.lineTo(-75, 100);
 
        fLightPos = SkPoint3::Make(350, 0, 600);
    }

onChar()

bool ShadowsSlide::onChar ( SkUnichar  uni )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 99 of file AndroidShadowsSlide.cpp.

                                        {
            bool handled = false;
            switch (uni) {
                case 'W':
                    fShowAmbient = !fShowAmbient;
                    handled = true;
                    break;
                case 'S':
                    fShowSpot = !fShowSpot;
                    handled = true;
                    break;
                case 'T':
                    fUseAlt = !fUseAlt;
                    handled = true;
                    break;
                case 'B':
                    fUseBlur = !fUseBlur;
                    handled = true;
                    break;
                case 'O':
                    fShowObject = !fShowObject;
                    handled = true;
                    break;
                case 'N':
                    fDoAlphaAnimation = !fDoAlphaAnimation;
                    if (!fDoAlphaAnimation) {
                        fAnimAlpha = 1;
                    }
                    handled = true;
                    break;
                case '>':
                    fZDelta += 0.5f;
                    handled = true;
                    break;
                case '<':
                    fZDelta -= 0.5f;
                    handled = true;
                    break;
                case '?':
                    fIgnoreShadowAlpha = !fIgnoreShadowAlpha;
                    handled = true;
                    break;
                default:
                    break;
            }
            if (handled) {
                return true;
            }
            return false;
    }

---

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

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