ChineseFlingSlide Class Reference

Inheritance diagram for ChineseFlingSlide:

Public Member Functions
	ChineseFlingSlide ()
void	draw (SkCanvas *canvas) override
void	load (SkScalar w, SkScalar h) override
void	createRandomWord (SkUnichar glyphs[kWordLength])
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual bool	animate (double nanos)
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 42 of file ChineseFlingSlide.cpp.

Constructor & Destructor Documentation

ChineseFlingSlide()

ChineseFlingSlide::ChineseFlingSlide ( )

inline

Definition at line 53 of file ChineseFlingSlide.cpp.

{ fName = "chinese-fling"; }

Member Function Documentation

createRandomWord()

void ChineseFlingSlide::createRandomWord ( SkUnichar  glyphs[kWordLength] )

inline

Definition at line 101 of file ChineseFlingSlide.cpp.

                                                         {
        for (int i = 0; i < kWordLength; ++i) {
            glyphs[i] = fRand.nextRangeU(0x4F00, 0x9FA0);
        }
    }

draw()

void ChineseFlingSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 55 of file ChineseFlingSlide.cpp.

                                         {
        canvas->clear(0xFFDDDDDD);
 
        SkPaint paint;
        paint.setColor(0xDE000000);
 
        // draw a consistent run of the 'words' - one word per line
        int index = fIndex;
        for (SkScalar y = 0.0f; y < 1024.0f; ) {
 
            y += -fMetrics.fAscent;
            canvas->drawTextBlob(fBlobs[index], 0, y, paint);
 
            y += fMetrics.fDescent + fMetrics.fLeading;
            ++index;
            index %= kNumBlobs;
        }
        // now "fling" a random amount
        fIndex += fRand.nextRangeU(5, 20);
        fIndex %= kNumBlobs;
    }

load()

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

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 77 of file ChineseFlingSlide.cpp.

                                               {
        fTypeface = chinese_typeface();
 
        SkFont font(fTypeface, 56);
        font.getMetrics(&fMetrics);
 
        SkUnichar glyphs[kWordLength];
        for (int32_t i = 0; i < kNumBlobs; ++i) {
            this->createRandomWord(glyphs);
 
            SkTextBlobBuilder builder;
            ToolUtils::add_to_text_blob_w_len(&builder,
                                              (const char*)glyphs,
                                              kWordLength * 4,
                                              SkTextEncoding::kUTF32,
                                              font,
                                              0,
                                              0);
 
            fBlobs[i] = builder.make();
        }
    }

---

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

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