/// <summary> /// 获得分割段宽度 /// </summary> /// <param name="coordinateWidth"></param> /// <param name="dataZoom"></param> /// <returns></returns> public static float GetScaleWidth(Axis axis, float coordinateWidth, int index, DataZoom dataZoom = null) { if (index < 0) { return(0); } int num = GetScaleNumber(axis, coordinateWidth, dataZoom); int splitNum = GetSplitNumber(axis, coordinateWidth, dataZoom); if (num <= 0) { num = 1; } if (axis.IsTime() || axis.IsValue()) { var value = axis.GetLabelValue(index); var lastValue = axis.GetLabelValue(index - 1); return(axis.context.minMaxRange == 0 ? 0 : (float)(coordinateWidth * (value - lastValue) / axis.context.minMaxRange)); } else { var data = axis.GetDataList(dataZoom); if (axis.IsCategory() && data.Count > 0) { var count = axis.boundaryGap ? data.Count : data.Count - 1; int tick = count / splitNum; if (count <= 0) { return(0); } var each = coordinateWidth / count; if (axis.insertDataToHead) { var max = axis.boundaryGap ? splitNum : splitNum - 1; if (index == 1) { if (axis.axisTick.alignWithLabel) { return(each * tick); } else { return(coordinateWidth - each * tick * max); } } else { if (count < splitNum) { return(each); } else { return(each * (count / splitNum)); } } } else { var max = axis.boundaryGap ? num - 1 : num; if (index >= max) { if (axis.axisTick.alignWithLabel) { return(each * tick); } else { return(coordinateWidth - each * tick * (index - 1)); } } else { if (count < splitNum) { return(each); } else { return(each * (count / splitNum)); } } } } else { if (splitNum <= 0) { return(0); } else { return(coordinateWidth / splitNum); } } } }
/// <summary> /// 获得标签显示的名称 /// </summary> /// <param name="index"></param> /// <param name="minValue"></param> /// <param name="maxValue"></param> /// <param name="dataZoom"></param> /// <returns></returns> public static string GetLabelName(Axis axis, float coordinateWidth, int index, double minValue, double maxValue, DataZoom dataZoom, bool forcePercent) { int split = GetSplitNumber(axis, coordinateWidth, dataZoom); if (axis.type == Axis.AxisType.Value) { if (minValue == 0 && maxValue == 0) { maxValue = axis.max != 0 ? axis.max : 1; } double value = 0; if (forcePercent) { maxValue = 100; } value = axis.GetLabelValue(index); if (axis.inverse) { value = -value; minValue = -minValue; maxValue = -maxValue; } if (forcePercent) { return(string.Format("{0}%", (int)value)); } else { return(axis.axisLabel.GetFormatterContent(index, value, minValue, maxValue)); } } else if (axis.type == Axis.AxisType.Log) { double value = axis.logBaseE ? System.Math.Exp(axis.GetLogMinIndex() + index) : System.Math.Pow(axis.logBase, axis.GetLogMinIndex() + index); if (axis.inverse) { value = -value; minValue = -minValue; maxValue = -maxValue; } return(axis.axisLabel.GetFormatterContent(index, value, minValue, maxValue, true)); } else if (axis.type == Axis.AxisType.Time) { if (minValue == 0 && maxValue == 0) { return(string.Empty); } if (index > axis.context.labelValueList.Count - 1) { return(string.Empty); } var value = axis.GetLabelValue(index); return(axis.axisLabel.GetFormatterDateTime(index, value, minValue, maxValue)); } var showData = axis.GetDataList(dataZoom); int dataCount = showData.Count; if (dataCount <= 0) { return(""); } int rate = axis.boundaryGap ? (dataCount / split) : (dataCount - 1) / split; if (rate == 0) { rate = 1; } if (axis.insertDataToHead) { if (index > 0) { var residue = (dataCount - 1) - split * rate; var newIndex = residue + (index - 1) * rate; if (newIndex < 0) { newIndex = 0; } return(axis.axisLabel.GetFormatterContent(newIndex, showData[newIndex])); } else { if (axis.boundaryGap && coordinateWidth / dataCount > 5) { return(string.Empty); } else { return(axis.axisLabel.GetFormatterContent(0, showData[0])); } } } else { int newIndex = index * rate; if (newIndex < dataCount) { return(axis.axisLabel.GetFormatterContent(newIndex, showData[newIndex])); } else { if (axis.boundaryGap && coordinateWidth / dataCount > 5) { return(string.Empty); } else { return(axis.axisLabel.GetFormatterContent(dataCount - 1, showData[dataCount - 1])); } } } }