public RichEditBlock(Transform parent, float width, float lineSpacing)
{
gameObject = new GameObject("RichEditBlock");
transform = gameObject.AddComponent<RectTransform>();
transform.SetParent(parent, false);
transform.SetAsLastSibling();
layoutElement = gameObject.AddComponent<LayoutElement>();
layoutElement.preferredWidth = width;
layoutElement.preferredHeight = 0;
layoutGroup = gameObject.AddComponent<VerticalLayoutGroup>();
layoutGroup.childForceExpandWidth = false;
layoutGroup.childForceExpandHeight = false;
layoutGroup.childAlignment = TextAnchor.LowerLeft;
layoutGroup.spacing = lineSpacing;
currentLine = AddNewLine();
}
public void Add(string text, Text textSample)
{
if (string.IsNullOrEmpty(text))
{
return;
}
textSample.gameObject.SetActive(true);
string remain = text;
string addableText = "";
while (!string.IsNullOrEmpty(remain))
{
bool canAdd = false;
bool forceAdd = false;
addableText = GetAddableText(remain, textSample);
canAdd = !string.IsNullOrEmpty(addableText);
if (!canAdd && currentLine.IsEmpty)
{
canAdd = true;
forceAdd = true;
addableText = remain.Substring(0, 1);
}
if (!canAdd)
{
currentLine = AddNewLine();
continue;
}
remain = remain.Substring(addableText.Length, remain.Length - addableText.Length);
var textObject = GameObject.Instantiate(textSample.gameObject);
var newText = textObject.GetComponent<Text>();
newText.text = addableText;
var textRectTransform = textObject.transform as RectTransform;
textRectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, newText.preferredWidth);
textRectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, newText.preferredHeight);
currentLine.Add(textObject.transform as RectTransform, forceAdd);
UpdateHeight();
}
textSample.gameObject.SetActive(true);
}
private RichEditLine AddNewLine()
{
RichEditLine line = new RichEditLine(transform, layoutElement.preferredWidth);
lineList.Add(line);
UpdateHeightForNewLine(line);
return line;
}
private void UpdateHeightForNewLine(RichEditLine line)
{
if (currentLine != null)
{
previousHeight += currentLine.LayoutElement.preferredHeight + LineSpacing;
}
layoutElement.preferredHeight = previousHeight + line.LayoutElement.preferredHeight;
}
public void Add(RectTransform child)
{
bool canAdd = currentLine.CanAdd(child);
if (!canAdd && !currentLine.IsEmpty)
{
currentLine = AddNewLine();
}
currentLine.Add(child, true);
UpdateHeight();
}