public static void AddStyle(ref LinkedList <RichTextStyle> styles, RichTextStyle newSet, bool overrideOldStyle)
{
if (newSet.end <= newSet.start || newSet.start < 0 || !newSet.hasAnyStyle)
{
return;
}
if (styles == null)
{
styles = new LinkedList <RichTextStyle>();
}
if (styles.Count == 0)
{
styles.AddLast(newSet);
return;
}
LinkedListNode <RichTextStyle> node = styles.First;
while (node != null)
{
RichTextStyle set = node.Value;
LinkedListNode <RichTextStyle> next = node.Next;
if (newSet.end <= set.start)
{
styles.AddBefore(node, newSet);
return;
}
else if (newSet.start >= set.end)
{
node = next;
continue;
}
//newSet.end>set.Start, newSet.start<set.end
int off0, off1;
//左边区域
off0 = Mathf.Min(newSet.start, set.start);
off1 = Mathf.Max(newSet.start, set.start);
if (off0 < off1)
{
RichTextStyle insert = newSet.start < set.start ? newSet.CopyTo(off0, off1) : set.CopyTo(off0, off1);
styles.AddBefore(node, insert);
newSet.start = off1;
set.start = off1;
node.Value = set;
}
//公共区域
off0 = off1;
off1 = Mathf.Min(set.end, newSet.end);
if (off0 < off1)
{
RichTextStyle insert;
if (overrideOldStyle)
{
insert = set.CopyTo(off0, off1);
insert.OverrideSet(newSet);
}
else
{
insert = newSet.CopyTo(off0, off1);
insert.OverrideSet(set);
}
node.Value = insert;
set.start = off1;
newSet.start = off1;
}
if (newSet.start >= newSet.end)
{
styles.AddAfter(node, set);
break;
}
else
{
node = next;
}
}
if (newSet.start < newSet.end)
{
styles.AddLast(newSet);
}
}