StickChart等chartY坐标在右侧时selectedindex计算有误

[limccn]

StickChart等chartY坐标在右侧时selectedindex计算有误，
应当返回
stickData.size() - maxSticksNum + index
实际返回
index

需要增加以下判断
if (axisYPosition == AXIS_Y_POSITION_LEFT) {
return index;
}else{
return stickData.size() - maxSticksNum + index;
}