/// <summary>
/// 删除选中的文本
/// </summary>
/// <returns></returns>
public static bool DeleteSelectString()
{
if (StartPress.Index == EndPress.Index)
{
return(false);
}
if (EndPress.Index < StartPress.Index)
{
int c = StartPress.Index - EndPress.Index;
Content.Remove(EndPress.Index, c);
StartPress = EndPress;
}
else
{
int c = EndPress.Index - StartPress.Index;
Content.Remove(StartPress.Index, c);
EndPress = StartPress;
}
ChangeText(Target, Content);
if (StartPress.Row < ShowStart)
{
ShowStart = StartPress.Row;
}
else if (StartPress.Row >= ShowStart + ShowRow)
{
ShowStart = StartPress.Row - ShowRow + 1;
}
return(true);
}
public static void PointerDown(UserEvent user, UserAction action, ref PressInfo press)
{
var offset = action.CanPosition;
offset.x -= user.GlobalPosition.x;//全局坐标
offset.y -= user.GlobalPosition.y;
var q = Quaternion.Inverse(user.GlobalRotation);
offset = q * offset;
var scale = user.GlobalScale;//全局尺寸
offset.x /= scale.x;
offset.y /= scale.y;
float oy = lines[0].topY - lines[ShowStart].topY;
offset.y -= oy;
offset.y += StartY;
int row = ShowStart;
int end = VisibleCount;
if (lines.Count > 0)
{
for (int i = ShowStart; i < lines.Count; i++)
{
if (offset.y > lines[i].topY)
{
end = lines[i].startCharIdx;
break;
}
else
{
row = i;
}
}
}
int start = lines[row].startCharIdx;
int col = end - start;
for (int i = start; i < end; i++)
{
if (offset.x < chars[i].cursorPos.x + chars[i].charWidth * 0.5f)
{
col = i - start;
break;
}
}
press.Row = row;
press.Offset = col;
press.Index = start + col;
}
/// <summary>
/// 设置光标位置
/// </summary>
/// <param name="index">光标位置</param>
/// <param name="LineChanged">是否改变的行号</param>
/// <returns>是否改变成功</returns>
public static bool SetPressIndex(int index, ref bool LineChanged)
{
if (SetPressIndex(index, ref StartPress))
{
EndPress = StartPress;
if (StartPress.Row < ShowStart)
{
ShowStart = StartPress.Row;
LineChanged = true;
}
else
if (StartPress.Row >= ShowStart + ShowRow)
{
ShowStart = StartPress.Row - ShowRow + 1;
LineChanged = true;
}
return(true);
}
return(false);
}
/// <summary>
/// 设置光标位置
/// </summary>
/// <param name="index"></param>
/// <param name="press"></param>
/// <returns></returns>
static bool SetPressIndex(int index, ref PressInfo press)
{
if (index < 0)
{
index = 0;
}
if (lines.Count == 0)
{
press.Index = 0;
press.Row = 0;
press.Offset = 0;
return(false);
}
if (index == press.Index)
{
return(false);
}
if (index >= chars.Count)
{
index = chars.Count - 1;
if (index == press.Index)
{
return(false);
}
press.Index = index;
press.Row = lines.Count - 1;
press.Offset = index - lines[press.Row].startCharIdx;
return(true);
}
for (int i = 0; i < lines.Count; i++)
{
if (index <= lines[i].endIdx)
{
press.Index = index;
press.Row = i;
press.Offset = index - lines[i].startCharIdx;
break;
}
}
return(true);
}
/// <summary>
/// 光标向右移动
/// </summary>
/// <param name="LineChanged">是否改变了行号</param>
/// <returns>是否移动成功</returns>
public static bool PointerMoveRight(ref bool LineChanged)
{
if (StartPress.Index < chars.Count - 1)
{
StartPress.Index++;
int r = StartPress.Row;
if (StartPress.Index > lines[r].endIdx)
{
StartPress.Row++;
}
StartPress.Offset = StartPress.Index - lines[StartPress.Row].startCharIdx;
EndPress = StartPress;
if (StartPress.Row >= ShowStart + ShowRow)
{
ShowStart = StartPress.Row - ShowRow + 1;
LineChanged = true;
}
return(true);
}
return(false);
}
/// <summary>
/// 光标向左移动
/// </summary>
/// <param name="LineChanged">是否改变了行号</param>
/// <returns>是否移动成功</returns>
public static bool PointerMoveLeft(ref bool LineChanged)
{
if (StartPress.Index > 0)
{
StartPress.Index--;
int r = StartPress.Row;
if (StartPress.Index < lines[r].startCharIdx)
{
StartPress.Row--;
}
StartPress.Offset = StartPress.Index - lines[StartPress.Row].startCharIdx;
EndPress = StartPress;
if (StartPress.Row < ShowStart)
{
ShowStart = StartPress.Row;
LineChanged = true;
}
return(true);
}
return(false);
}
public static void ChangeText(HText text, EmojiString str)
{
verts.Clear();
lines.Clear();
chars.Clear();
Target = text;
Content = str;
text.GetGenerationSettings(ref text.m_sizeDelta, ref HText.settings);
HText.settings.richText = false;
var g = HText.Generator;
string fs = Content.FilterString;
if (contentType == ContentType.Password)
{
ContentHeight = g.GetPreferredHeight(new string('●', fs.Length), HText.settings);
}
else
{
ContentHeight = g.GetPreferredHeight(fs, HText.settings);
}
VisibleCount = g.characterCountVisible;
if (g.lines.Count > 0)
{
float per = ContentHeight / g.lines.Count;
ShowRow = (int)(text.m_sizeDelta.y / per);
}
else
{
ShowRow = (int)text.m_sizeDelta.y / text.FontSize;
}
StartY = ContentHeight * 0.5f - text.m_sizeDelta.y * 0.5f;
verts.AddRange(g.verts);
chars.AddRange(g.characters);
LineInfo line = new LineInfo();
if (g.lines.Count > 0)
{
var l = g.lines[0];
for (int i = 1; i < g.lines.Count; i++)
{
var n = g.lines[i];
line.startCharIdx = l.startCharIdx;
line.endIdx = n.startCharIdx - 1;
line.topY = l.topY;
line.endY = n.topY;
l = n;
lines.Add(line);
}
l = g.lines[g.lines.Count - 1];
line.startCharIdx = l.startCharIdx;
line.endIdx = chars.Count - 1;
line.topY = l.topY;
line.endY = g.lines[0].topY - ContentHeight - g.lines[g.lines.Count - 1].leading;
lines.Add(line);
}
if (StartPress.Index > fs.Length)
{
SetPressIndex(fs.Length, ref StartPress);
EndPress = StartPress;
}
SetShowStart(ShowStart);
}
public static void SetStartPointer(UserEvent user, UserAction action)
{
PointerDown(user, action, ref StartPress);
EndPress = StartPress;
}
