LatticeGM2 Class Reference

Inheritance diagram for LatticeGM2:

Public Member Functions
	LatticeGM2 ()
SkString	getName () const override
SkISize	getISize () override
sk_sp< SkImage >	makeImage (SkCanvas *root, int padLeft, int padTop, int padRight, int padBottom)
void	onDrawHelper (SkCanvas *canvas, int padLeft, int padTop, int padRight, int padBottom, SkPaint &paint)
void	onDraw (SkCanvas *canvas) override
Public Member Functions inherited from skiagm::GM
	GM (SkColor backgroundColor=SK_ColorWHITE)
virtual	~GM ()
void	setMode (Mode mode)
Mode	getMode () const
DrawResult	gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
void	gpuTeardown ()
void	onceBeforeDraw ()
DrawResult	draw (SkCanvas *canvas)
DrawResult	draw (SkCanvas *, SkString *errorMsg)
void	drawBackground (SkCanvas *)
DrawResult	drawContent (SkCanvas *canvas)
DrawResult	drawContent (SkCanvas *, SkString *errorMsg)
virtual bool	runAsBench () const
SkScalar	width ()
SkScalar	height ()
SkColor	getBGColor () const
void	setBGColor (SkColor)
void	drawSizeBounds (SkCanvas *, SkColor)
bool	animate (double)
virtual bool	onChar (SkUnichar)
bool	getControls (SkMetaData *controls)
void	setControls (const SkMetaData &controls)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual void	modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
virtual bool	isBazelOnly () const
virtual std::map< std::string, std::string >	getGoldKeys () const

Additional Inherited Members
Public Types inherited from skiagm::GM
enum	Mode { kGM_Mode , kSample_Mode , kBench_Mode }
using	DrawResult = skiagm::DrawResult
using	GraphiteTestContext = skiatest::graphite::GraphiteTestContext
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual void	onOnceBeforeDraw ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Detailed Description

Definition at line 226 of file lattice.cpp.

Constructor & Destructor Documentation

LatticeGM2()

LatticeGM2::LatticeGM2 ( )

inline

Definition at line 228 of file lattice.cpp.

{}

Member Function Documentation

getISize()

SkISize LatticeGM2::getISize ( )

inlineoverridevirtual

Implements skiagm::GM.

Definition at line 231 of file lattice.cpp.

{ return SkISize::Make(800, 800); }

getName()

SkString LatticeGM2::getName ( ) const

inlineoverridevirtual

Implements skiagm::GM.

Definition at line 229 of file lattice.cpp.

{ return SkString("lattice2"); }

makeImage()

sk_sp< SkImage > LatticeGM2::makeImage ( SkCanvas *  root, int  padLeft, int  padTop, int  padRight, int  padBottom  )

inline

Definition at line 233 of file lattice.cpp.

                                                                                                   {
        const int kSize = 80;
        auto surface(make_surface(root, kSize, padLeft, padTop, padRight, padBottom));
        SkCanvas* canvas = surface->getCanvas();
        SkPaint paint;
        paint.setAntiAlias(false);
        SkRect r;
 
        //first line
        r.setXYWH(0, 0, 4, 1);  //4x1 green rect
        paint.setColor(0xFF00FF00);
        canvas->drawRect(r, paint);
 
        r.setXYWH(4, 0, 1, 1); //1x1 blue pixel -> draws as rectangle
        paint.setColor(0xFF0000FF);
        canvas->drawRect(r, paint);
 
        r.setXYWH(5, 0, kSize-5, 1); //the rest of the line is red
        paint.setColor(0xFFFF0000);
        canvas->drawRect(r, paint);
 
 
        //second line -> draws as fixed color rectangles
        r.setXYWH(0, 1, 4, 1);  //4x1 red rect
        paint.setColor(0xFFFF0000);
        canvas->drawRect(r, paint);
 
        r.setXYWH(4, 1, 1, 1); //1x1 blue pixel with alpha
        paint.setColor(0x880000FF);
        canvas->drawRect(r, paint);
 
        r.setXYWH(5, 1, kSize-5, 1); //the rest of the line is green
        paint.setColor(0xFF00FF00);
        canvas->drawRect(r, paint);
 
 
        //third line - does not draw, because it is transparent
        r.setXYWH(0, 2, 4, kSize-2);  //4x78 green rect
        paint.setColor(0xFF00FF00);
        canvas->drawRect(r, paint);
 
        r.setXYWH(4, 2, 1, kSize-2); //1x78 red pixel with alpha
        paint.setColor(0x88FF0000);
        canvas->drawRect(r, paint);
 
        r.setXYWH(5, 2, kSize-5, kSize-2); //the rest of the image is blue
        paint.setColor(0xFF0000FF);
        canvas->drawRect(r, paint);
 
        return surface->makeImageSnapshot();
    }

onDraw()

void LatticeGM2::onDraw ( SkCanvas *  canvas )

inlineoverridevirtual

Reimplemented from skiagm::GM.

Definition at line 333 of file lattice.cpp.

                                           {
 
        //draw a rectangle in the background with transparent pixels
        SkPaint paint;
        paint.setColor(0x7F123456);
        paint.setBlendMode(SkBlendMode::kSrc);
        canvas->drawRect( SkRect::MakeXYWH(300, 0, 300, 800), paint);
 
        //draw image lattice with kSrcOver blending
        paint.setBlendMode(SkBlendMode::kSrcOver);
        this->onDrawHelper(canvas, 0, 0, 0, 0, paint);
 
        //draw image lattice with kSrcATop blending
        canvas->translate(0.0f, 400.0f);
        paint.setBlendMode(SkBlendMode::kSrcATop);
        this->onDrawHelper(canvas, 0, 0, 0, 0, paint);
    }

onDrawHelper()

void LatticeGM2::onDrawHelper ( SkCanvas *  canvas, int  padLeft, int  padTop, int  padRight, int  padBottom, SkPaint &  paint  )

inline

Definition at line 285 of file lattice.cpp.

                                      {
        int xDivs[2] = {4, 5};
        int yDivs[2] = {1, 2};
 
        canvas->save();
 
        sk_sp<SkImage> image = makeImage(canvas, padLeft, padTop, padRight, padBottom);
 
        canvas->drawImage(image, 10, 10);
 
        SkCanvas::Lattice lattice;
        lattice.fXCount = 2;
        lattice.fXDivs = xDivs;
        lattice.fYCount = 2;
        lattice.fYDivs = yDivs;
        lattice.fBounds = nullptr;
 
        SkCanvas::Lattice::RectType flags[9];
        sk_bzero(flags, 9 * sizeof(SkCanvas::Lattice::RectType));
        flags[3] = SkCanvas::Lattice::kFixedColor;
        flags[4] = SkCanvas::Lattice::kFixedColor;
        flags[5] = SkCanvas::Lattice::kFixedColor;
 
        flags[6] = SkCanvas::Lattice::kTransparent;
        flags[7] = SkCanvas::Lattice::kTransparent;
        flags[8] = SkCanvas::Lattice::kTransparent;
        lattice.fRectTypes = flags;
 
        SkColor colors[9] = {SK_ColorBLACK, SK_ColorBLACK, SK_ColorBLACK,
                             0xFFFF0000, 0x880000FF, 0xFF00FF00,
                             SK_ColorBLACK, SK_ColorBLACK, SK_ColorBLACK};
        lattice.fColors = colors;
        paint.setColor(0xFFFFFFFF);
        canvas->drawImageLattice(image.get(), lattice,
                                 SkRect::MakeXYWH(100, 100, 200, 200),
                                 SkFilterMode::kNearest, &paint);
 
        //draw the same content with alpha
        canvas->translate(400, 0);
        paint.setColor(0x80000FFF);
        canvas->drawImageLattice(image.get(), lattice,
                                 SkRect::MakeXYWH(100, 100, 200, 200),
                                 SkFilterMode::kNearest, &paint);
 
        canvas->restore();
    }

---

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

• third_party/skia/gm/lattice.cpp