_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

drawBitmap() bool GiCanvasAdapter::drawBitmap ( const char *  name, float  xc, float  yc, float  w, float  h, float  angle  ) virtual Draw a image whose center will at (xc, yc). 参数 name The image's identify which is usually a filename without path. xc The center X position of the image. yc The center Y position of the image. w Display width of the image. h Display height of the image. angle Rotate angle in radians, it's positive direction is CCW in the world coordinate system. 返回 true if successful 实现了 GiCanvas.