bool HandleText(RichElementText element, RichElementTextProxy proxy)
{
if (proxy != null)
{
return(HandleTextRecur(element.GetText(), element.GetStyle(), element.GetClickHandler(), element, proxy));
}
return(false);
}
// NOTE now we always anchor of game object is at the top-left,
// also we assume rich text anchor is at the top-left
// TODO improve
bool HandleTextRecur(string text, string style, Action clickHandler, RichElementText element, RichElementTextProxy proxy)
{
// param check
if (string.IsNullOrEmpty(text))
{
return(true);
}
if (m_leftWidth <= 0)
{
HandleNewline();
}
var textGO = proxy.Create(text, style, clickHandler);
if (!textGO)
{
Debug.LogError("[RichText]Unable to create rich element : " + element.ToString());
return(false);
}
// NOTE we need to add it to textGO immediately for retrieving correct size
textGO.transform.SetParent(transform, false);
AddElementRenderer(element, textGO);
var size = proxy.GetSize(textGO);
if (size.x < m_leftWidth)
{
// enough width space, just add game object
textGO.transform.localPosition = m_renderPos;
// update control data
var oldMaxHeight = m_maxHeight;
m_maxHeight = size.y > m_maxHeight ? size.y : m_maxHeight;
m_textHeight = m_textHeight - oldMaxHeight + m_maxHeight;
m_leftWidth -= size.x;
m_renderPos += new Vector3(size.x, 0, 0);
return(true);
}
else
{
// not enough space, have to adjust
float factor = m_leftWidth / size.x;
int subStrLength = Mathf.FloorToInt(factor * text.Length);
if (subStrLength <= 0)
{
HandleNewline();
// recalculate sub string length
factor = m_leftWidth / size.x;
factor = Mathf.Min(factor, 1);
subStrLength = Mathf.FloorToInt(factor * text.Length);
// still not enough space, seems ill situation
if (subStrLength <= 0)
{
// NOTE not so sure about this ...
Debug.LogWarning("[RichText]Incorrect to handle rich text here, seems width is too small ...");
// we reset sub string length here
// NOTE not so sure about this ...
subStrLength = 1;
}
}
string subStr = text.Substring(0, subStrLength);
proxy.SetText(textGO, subStr);
// check width after adjust text
var adjustSize = proxy.GetSize(textGO);
if (adjustSize.x > m_leftWidth)
{
// still out of width
for (int i = subStrLength - 1; i > 0; --i)
{
subStr = text.Substring(0, i);
proxy.SetText(textGO, subStr);
adjustSize = proxy.GetSize(textGO);
if (adjustSize.x <= m_leftWidth)
{
break;
}
}
}
else
{
// enough space, but we need to search most adjust
for (int i = subStrLength + 1; i < text.Length; ++i)
{
subStr = text.Substring(0, i);
proxy.SetText(textGO, subStr);
adjustSize = proxy.GetSize(textGO);
if (adjustSize.x > m_leftWidth)
{
// roll back
subStr = text.Substring(0, i - 1);
proxy.SetText(textGO, subStr);
adjustSize = proxy.GetSize(textGO);
break;
}
}
}
textGO.transform.localPosition = m_renderPos;
// update control data
m_renderPos += new Vector3(adjustSize.x, 0, 0);
var oldMaxHeight = m_maxHeight;
m_maxHeight = size.y > m_maxHeight ? size.y : m_maxHeight;
m_textHeight = m_textHeight - oldMaxHeight + m_maxHeight;
m_leftWidth -= adjustSize.x;
return(HandleTextRecur(text.Substring(subStr.Length, text.Length - subStr.Length), style, clickHandler, element, proxy));
}
}
