DrawShipSlide Class Reference

Inheritance diagram for DrawShipSlide:

Public Member Functions
	DrawShipSlide (const char name[], DrawAtlasProc proc)
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
void	load (SkScalar, SkScalar) override
void	unload () override
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 50 of file ShipSlide.cpp.

Constructor & Destructor Documentation

DrawShipSlide()

DrawShipSlide::DrawShipSlide ( const char  name[], DrawAtlasProc  proc  )

inline

Definition at line 52 of file ShipSlide.cpp.

                                                         : fProc(proc) {
        fName = name;
    }

Member Function Documentation

animate()

bool DrawShipSlide::animate ( double  nanos )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 129 of file ShipSlide.cpp.

                                        {
        //TODO: use nanos
        //SkScalar angle = SkDoubleToScalar(fmod(1e-9 * nanos * 360 / 24, 360));
        //fAnimatingDrawable->setSweep(angle);
        return true;
    }

draw()

void DrawShipSlide::draw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Implements Slide.

Definition at line 96 of file ShipSlide.cpp.

                                         {
        const float kCosDiff = 0.99984769515f;
        const float kSinDiff = 0.01745240643f;
 
        if (!fAtlas) {
            return;
        }
 
        SkPaint paint;
        paint.setColor(SK_ColorWHITE);
 
        SkScalar anchorX = fAtlas->width()*0.5f;
        SkScalar anchorY = fAtlas->height()*0.5f;
        for (int i = 0; i < kGrid*kGrid+1; ++i) {
            SkScalar c = fXform[i].fSCos;
            SkScalar s = fXform[i].fSSin;
 
            SkScalar dx = c*anchorX - s*anchorY;
            SkScalar dy = s*anchorX + c*anchorY;
 
            fXform[i].fSCos = kCosDiff*c - kSinDiff*s;
            fXform[i].fSSin = kSinDiff*c + kCosDiff*s;
 
            dx -= fXform[i].fSCos*anchorX - fXform[i].fSSin*anchorY;
            dy -= fXform[i].fSSin*anchorX + fXform[i].fSCos*anchorY;
            fXform[i].fTx += dx;
            fXform[i].fTy += dy;
        }
 
        fProc(canvas, fAtlas.get(), fXform, fTex, nullptr, kGrid*kGrid+1, nullptr,
              SkSamplingOptions(SkFilterMode::kLinear), &paint);
    }

load()

void DrawShipSlide::load ( SkScalar  , SkScalar    )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 57 of file ShipSlide.cpp.

                                           {
        fAtlas = ToolUtils::GetResourceAsImage("images/ship.png");
        if (!fAtlas) {
            SkDebugf("\nCould not decode file ship.png. Falling back to penguin mode.\n");
            fAtlas = ToolUtils::GetResourceAsImage("images/baby_tux.png");
            if (!fAtlas) {
                SkDebugf("\nCould not decode file baby_tux.png. Did you forget"
                         " to set the resourcePath?\n");
                return;
            }
        }
 
        SkScalar anchorX = fAtlas->width()*0.5f;
        SkScalar anchorY = fAtlas->height()*0.5f;
        int currIndex = 0;
        for (int x = 0; x < kGrid; x++) {
            for (int y = 0; y < kGrid; y++) {
                float xPos = (x / (kGrid - 1.0f)) * kWidth;
                float yPos = (y / (kGrid - 1.0f)) * kWidth;
 
                fTex[currIndex] = SkRect::MakeLTRB(0.0f, 0.0f,
                                                   SkIntToScalar(fAtlas->width()),
                                                   SkIntToScalar(fAtlas->height()));
                fXform[currIndex] = SkRSXform::MakeFromRadians(0.1f, SK_ScalarPI*0.5f,
                                                               xPos, yPos, anchorX, anchorY);
                currIndex++;
            }
        }
        fTex[currIndex] = SkRect::MakeLTRB(0.0f, 0.0f,
                                           SkIntToScalar(fAtlas->width()),
                                           SkIntToScalar(fAtlas->height()));
        fXform[currIndex] = SkRSXform::MakeFromRadians(0.5f, SK_ScalarPI*0.5f,
                                                       kWidth*0.5f, kHeight*0.5f, anchorX, anchorY);
    }

unload()

void DrawShipSlide::unload ( )

inlineoverrideprotectedvirtual

Reimplemented from Slide.

Definition at line 92 of file ShipSlide.cpp.

                           {
        fAtlas = nullptr;
    }

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

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