_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

quadTo() void GiCanvasAdapter::quadTo ( float  cpx, float  cpy, float  x, float  y  ) virtual Add a quadratic bezier segment to the current subpath. 实现了 GiCanvas.