150 lines
4.9 KiB
C#
150 lines
4.9 KiB
C#
using System;
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using UnityEngine;
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using UnityEngine.UI;
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namespace XCharts.Runtime
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{
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/// <summary>
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/// Text character limitation and adaptation component. When the length of the text exceeds the set length,
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/// it is cropped and suffixes are appended to the end.Only valid in the category axis.
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/// |文本字符限制和自适应。当文本长度超过设定的长度时进行裁剪,并将后缀附加在最后。
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/// 只在类目轴中有效。
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/// </summary>
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[Serializable]
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public class TextLimit : ChildComponent
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{
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[SerializeField] private bool m_Enable = false;
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[SerializeField] private float m_MaxWidth = 0;
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[SerializeField] private float m_Gap = 1;
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[SerializeField] private string m_Suffix = "...";
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/// <summary>
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/// Whether to enable text limit.
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/// |是否启用文本自适应。
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/// [default:true]
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/// </summary>
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public bool enable
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{
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get { return m_Enable; }
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set { if (PropertyUtil.SetStruct(ref m_Enable, value)) SetComponentDirty(); }
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}
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/// <summary>
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/// Set the maximum width. A default of 0 indicates automatic fetch; otherwise, custom.
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/// |Clipping occurs when the width of the text is greater than this value.
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/// |设定最大宽度。默认为0表示自动获取,否则表示自定义。当文本的宽度大于该值进行裁剪。
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/// </summary>
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public float maxWidth
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{
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get { return m_MaxWidth; }
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set { if (PropertyUtil.SetStruct(ref m_MaxWidth, value)) SetComponentDirty(); }
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}
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/// <summary>
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/// White pixel distance at both ends.
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/// |两边留白像素距离。
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/// [default:10f]
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/// </summary>
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public float gap
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{
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get { return m_Gap; }
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set { if (PropertyUtil.SetStruct(ref m_Gap, value)) SetComponentDirty(); }
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}
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/// <summary>
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/// Suffixes when the length exceeds.
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/// |长度超出时的后缀。
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/// [default: "..."]
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/// </summary>
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public string suffix
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{
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get { return m_Suffix; }
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set { if (PropertyUtil.SetClass(ref m_Suffix, value)) SetComponentDirty(); }
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}
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private ChartText m_RelatedText;
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private float m_RelatedTextWidth = 0;
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public TextLimit Clone()
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{
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var textLimit = new TextLimit();
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textLimit.enable = enable;
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textLimit.maxWidth = maxWidth;
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textLimit.gap = gap;
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textLimit.suffix = suffix;
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return textLimit;
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}
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public void Copy(TextLimit textLimit)
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{
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enable = textLimit.enable;
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maxWidth = textLimit.maxWidth;
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gap = textLimit.gap;
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suffix = textLimit.suffix;
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}
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public void SetRelatedText(ChartText txt, float labelWidth)
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{
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m_RelatedText = txt;
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m_RelatedTextWidth = labelWidth;
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}
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public string GetLimitContent(string content)
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{
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float checkWidth = m_MaxWidth > 0 ? m_MaxWidth : m_RelatedTextWidth;
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if (m_RelatedText == null || checkWidth <= 0)
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{
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return content;
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}
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else
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{
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if (m_Enable)
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{
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float len = m_RelatedText.GetPreferredWidth(content);
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float suffixLen = m_RelatedText.GetPreferredWidth(suffix);
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if (len >= checkWidth - m_Gap * 2)
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{
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return content.Substring(0, GetAdaptLength(content, suffixLen)) + suffix;
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}
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else
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{
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return content;
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}
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}
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else
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{
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return content;
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}
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}
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}
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private int GetAdaptLength(string content, float suffixLen)
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{
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int start = 0;
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int middle = content.Length / 2;
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int end = content.Length;
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float checkWidth = m_MaxWidth > 0 ? m_MaxWidth : m_RelatedTextWidth;
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float limit = checkWidth - m_Gap * 2 - suffixLen;
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if (limit < 0)
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return 0;
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float len = 0;
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while (len != limit && middle != start)
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{
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len = m_RelatedText.GetPreferredWidth(content.Substring(0, middle));
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if (len < limit)
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{
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start = middle;
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}
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else if (len > limit)
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{
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end = middle;
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}
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else
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{
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break;
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}
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middle = (start + end) / 2;
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}
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return middle;
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}
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}
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} |