_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

beginPaint() bool GiCanvasAdapter::beginPaint ( CGContextRef  context, bool  fast = false  ) 在给定上下文上开始绘制 函数调用图: 这是这个函数的调用关系图: