获取当前图表设置的背景颜色

Return the average distance between each of the pointers forming the gesture in progress through the focal point. @return Distance between pointers i

Computes the pixel offset for the given X lib value. This may be outside the view bounds.

Computes the pixel offset for the given X lib value. This may be outside the view bounds.

Computes the pixel offset for the given X lib value. This may be outside the view bounds.

Return the event time of the current event being processed. @return Current event time in milliseconds.

@return 获取虚线长度

Return the previous average distance between each of the pointers forming the gesture in progress through the focal point. @return Previous distance

@return 区间统计颜色

@return 获取文本边距

Returns {@code true} if a scale gesture is in progress.

是否是多指触控 @return

是否是伸缩状态

@param startIndex 开始的index @param endIndex 结束的index

Responds to scaling events for a gesture in progress. Reported by pointer motion. @param detector The detector reporting the event - use this to

* 打开区间统计 */