_cache _ctx _fill _fillARGB _gradient _gradient0 beginPaint beginPath bezierTo clearRect clipPath clipRect closePath colorPart context drawBitmap drawEllipse drawHandle drawLine drawPath drawRect drawTextAt endPaint GiCanvasAdapter LINEDASH lineTo moveTo quadTo restoreClip saveClip setBrush setPen ~GiCanvasAdapter

drawEllipse() void GiCanvasAdapter::drawEllipse ( float  x, float  y, float  w, float  h, bool  stroke, bool  fill  ) virtual Fill or stroke a ellipse with a corner and size (w>0, h>0). 实现了 GiCanvas.