void AdjustCaret(TextField.CharPosition cp)
{
_caretPosition = cp.caretIndex;
Vector2 pos = GetCharLocation(cp);
TextField.LineInfo line = textField.lines[cp.lineIndex];
pos.y = line.y + textField.y;
Vector2 newPos = pos;
if (newPos.x < textField.textFormat.size)
{
newPos.x += Math.Min(50, (int)(_contentRect.width / 2));
}
else if (newPos.x > _contentRect.width - GUTTER_X - textField.textFormat.size)
{
newPos.x -= Math.Min(50, (int)(_contentRect.width / 2));
}
if (newPos.x < GUTTER_X)
{
newPos.x = GUTTER_X;
}
else if (newPos.x > _contentRect.width - GUTTER_X)
{
newPos.x = Math.Max(GUTTER_X, _contentRect.width - GUTTER_X);
}
if (newPos.y < GUTTER_Y)
{
newPos.y = GUTTER_Y;
}
else if (newPos.y + line.height >= _contentRect.height - GUTTER_Y)
{
newPos.y = Math.Max(GUTTER_Y, _contentRect.height - line.height - GUTTER_Y);
}
pos += MoveContent(newPos - pos);
if (_editing)
{
if (line.height > 0) //将光标居中
{
pos.y += (int)(line.height - textField.textFormat.size) / 2;
}
_caret.SetPosition(pos.x, pos.y, 0);
Vector2 cursorPos = _caret.LocalToGlobal(new Vector2(0, _caret.height));
Input.compositionCursorPos = cursorPos;
_nextBlink = Time.time + 0.5f;
_caret.graphics.enabled = true;
if (_selectionStart != null)
{
UpdateSelection(cp);
}
}
}
/// <summary>
/// 获得字符的坐标。这个坐标是容器的坐标，不是文本里的坐标。
/// </summary>
/// <param name="cp"></param>
/// <returns></returns>
Vector2 GetCharLocation(TextField.CharPosition cp)
{
TextField.LineInfo line = textField.lines[cp.lineIndex];
Vector2 pos;
if (line.charCount == 0 || textField.charPositions.Count == 0)
{
if (textField.align == AlignType.Center)
{
pos.x = (int)(_contentRect.width / 2);
}
else
{
pos.x = GUTTER_X;
}
}
else
{
TextField.CharPosition v = textField.charPositions[Math.Min(cp.charIndex, textField.charPositions.Count - 1)];
pos.x = v.offsetX - 1;
}
pos.x += textField.x;
pos.y = textField.y + line.y;
return(pos);
}
void Scroll(int hScroll, int vScroll)
{
vScroll = Mathf.Clamp(vScroll, 0, textField.lines.Count - 1);
TextField.LineInfo line = textField.lines[vScroll];
hScroll = Mathf.Clamp(hScroll, 0, line.charCount - 1);
TextField.CharPosition cp = GetCharPosition(line.charIndex + hScroll);
Vector2 pt = GetCharLocation(cp);
MoveContent(new Vector2(GUTTER_X - pt.x, GUTTER_Y - pt.y), false);
}
void UpdateCaret(bool forceUpdate = false)
{
TextField.CharPosition cp;
if (_editing)
{
cp = GetCharPosition(_caretPosition + Input.compositionString.Length);
}
else
{
cp = GetCharPosition(_caretPosition);
}
Vector2 pos = GetCharLocation(cp);
TextField.LineInfo line = textField.lines[cp.lineIndex];
Vector2 offset = pos + textField.xy;
if (offset.x < textField.textFormat.size)
{
offset.x += Mathf.Min(50, _contentRect.width * 0.5f);
}
else if (offset.x > _contentRect.width - GUTTER_X - textField.textFormat.size)
{
offset.x -= Mathf.Min(50, _contentRect.width * 0.5f);
}
if (offset.x < GUTTER_X)
{
offset.x = GUTTER_X;
}
else if (offset.x > _contentRect.width - GUTTER_X)
{
offset.x = Mathf.Max(GUTTER_X, _contentRect.width - GUTTER_X);
}
if (offset.y < GUTTER_Y)
{
offset.y = GUTTER_Y;
}
else if (offset.y + line.height >= _contentRect.height - GUTTER_Y)
{
offset.y = Mathf.Max(GUTTER_Y, _contentRect.height - line.height - GUTTER_Y);
}
MoveContent(offset - pos, forceUpdate);
if (_editing)
{
_caret.position = textField.xy + pos;
_caret.height = line.height > 0 ? line.height : textField.textFormat.size;
if (_editable)
{
Vector2 cursorPos = _caret.LocalToWorld(new Vector2(0, _caret.height));
cursorPos = StageCamera.main.WorldToScreenPoint(cursorPos);
#if !UNITY_2019_OR_NEWER
if (Stage.devicePixelRatio == 1)
{
#endif
cursorPos.y = Screen.height - cursorPos.y;
cursorPos = cursorPos / Stage.devicePixelRatio;
Input.compositionCursorPos = cursorPos + new Vector2(0, 20);
#if !UNITY_2019_OR_NEWER
}
else
{
Input.compositionCursorPos = cursorPos - new Vector2(0, 20);
}
#endif
}
_nextBlink = Time.time + 0.5f;
_caret.graphics.enabled = true;
UpdateSelection(cp);
}
}
bool HandleKey(InputEvent evt)
{
bool keyCodeHandled = true;
switch (evt.keyCode)
{
case KeyCode.Backspace:
{
if (evt.command)
{
//for mac:CMD+Backspace=Delete
if (_selectionStart == _caretPosition && _caretPosition < textField.charPositions.Count - 1)
{
_selectionStart = _caretPosition + 1;
}
}
else
{
if (_selectionStart == _caretPosition && _caretPosition > 0)
{
_selectionStart = _caretPosition - 1;
}
}
if (_editable)
{
ReplaceSelection(null);
}
break;
}
case KeyCode.Delete:
{
if (_selectionStart == _caretPosition && _caretPosition < textField.charPositions.Count - 1)
{
_selectionStart = _caretPosition + 1;
}
if (_editable)
{
ReplaceSelection(null);
}
break;
}
case KeyCode.LeftArrow:
{
if (!evt.shift)
{
ClearSelection();
}
if (_caretPosition > 0)
{
if (evt.command) //mac keyboard
{
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MinValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
}
else
{
TextField.CharPosition cp = GetCharPosition(_caretPosition - 1);
AdjustCaret(cp, !evt.shift);
}
}
break;
}
case KeyCode.RightArrow:
{
if (!evt.shift)
{
ClearSelection();
}
if (_caretPosition < textField.charPositions.Count - 1)
{
if (evt.command)
{
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MaxValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
}
else
{
TextField.CharPosition cp = GetCharPosition(_caretPosition + 1);
AdjustCaret(cp, !evt.shift);
}
}
break;
}
case KeyCode.UpArrow:
{
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex > 0)
{
TextField.LineInfo line = textField.lines[cp.lineIndex - 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
}
break;
}
case KeyCode.DownArrow:
{
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == textField.lines.Count - 1)
{
cp.charIndex = textField.charPositions.Count - 1;
}
else
{
TextField.LineInfo line = textField.lines[cp.lineIndex + 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
}
AdjustCaret(cp, !evt.shift);
break;
}
case KeyCode.PageUp:
{
ClearSelection();
break;
}
case KeyCode.PageDown:
{
ClearSelection();
break;
}
case KeyCode.Home:
{
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MinValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
case KeyCode.End:
{
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MaxValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
//Select All
case KeyCode.A:
{
if (evt.ctrlOrCmd)
{
_selectionStart = 0;
AdjustCaret(GetCharPosition(int.MaxValue));
}
break;
}
//Copy
case KeyCode.C:
{
if (evt.ctrlOrCmd && !_displayAsPassword)
{
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
}
}
break;
}
//Paste
case KeyCode.V:
{
if (evt.ctrlOrCmd && _editable)
{
DoPaste();
}
break;
}
//Cut
case KeyCode.X:
{
if (evt.ctrlOrCmd && !_displayAsPassword)
{
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
if (_editable)
{
ReplaceSelection(null);
}
}
}
break;
}
case KeyCode.Z:
{
if (evt.ctrlOrCmd && _editable)
{
if (evt.shift)
{
TextInputHistory.inst.Redo(this);
}
else
{
TextInputHistory.inst.Undo(this);
}
}
break;
}
case KeyCode.Y:
{
if (evt.ctrlOrCmd && _editable)
{
TextInputHistory.inst.Redo(this);
}
break;
}
case KeyCode.Return:
case KeyCode.KeypadEnter:
{
if (textField.singleLine)
{
Stage.inst.focus = parent;
DispatchEvent("onSubmit", null);
DispatchEvent("onKeyDown", null); //for backward compatibility
}
break;
}
case KeyCode.Tab:
{
if (textField.singleLine)
{
Stage.inst.DoKeyNavigate(evt.shift);
keyCodeHandled = false;
}
break;
}
case KeyCode.Escape:
{
this.text = _textBeforeEdit;
Stage.inst.focus = parent;
break;
}
default:
keyCodeHandled = (int)evt.keyCode <= 272 && !evt.ctrlOrCmd;
break;
}
char c = evt.character;
if (c != 0)
{
if (evt.ctrlOrCmd)
{
return(true);
}
if (c == '\r' || c == 3)
{
c = '\n';
}
if (c == 25)/*shift+tab*/
{
c = '\t';
}
if (c == 27 /*escape*/ || textField.singleLine && (c == '\n' || c == '\t'))
{
return(true);
}
if (char.IsHighSurrogate(c))
{
_highSurrogateChar = c;
return(true);
}
if (_editable)
{
if (char.IsLowSurrogate(c))
{
ReplaceSelection(char.ConvertFromUtf32(((int)c & 0x03FF) + ((((int)_highSurrogateChar & 0x03FF) + 0x40) << 10)));
}
else
{
ReplaceSelection(c.ToString());
}
}
return(true);
}
else
{
if (Input.compositionString.Length > 0 && _editable)
{
UpdateText();
}
return(keyCodeHandled);
}
}
void __keydown(EventContext context)
{
if (!_editing || context.isDefaultPrevented)
{
return;
}
InputEvent evt = context.inputEvent;
switch (evt.keyCode)
{
case KeyCode.Backspace:
{
context.PreventDefault();
if (_selectionStart == _caretPosition && _caretPosition > 0)
{
_selectionStart = _caretPosition - 1;
}
ReplaceSelection(null);
break;
}
case KeyCode.Delete:
{
context.PreventDefault();
if (_selectionStart == _caretPosition && _caretPosition < textField.charPositions.Count - 1)
{
_selectionStart = _caretPosition + 1;
}
ReplaceSelection(null);
break;
}
case KeyCode.LeftArrow:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
if (_caretPosition > 0)
{
TextField.CharPosition cp = GetCharPosition(_caretPosition - 1);
AdjustCaret(cp, !evt.shift);
}
break;
}
case KeyCode.RightArrow:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
if (_caretPosition < textField.charPositions.Count - 1)
{
TextField.CharPosition cp = GetCharPosition(_caretPosition + 1);
AdjustCaret(cp, !evt.shift);
}
break;
}
case KeyCode.UpArrow:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == 0)
{
return;
}
TextField.LineInfo line = textField.lines[cp.lineIndex - 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
case KeyCode.DownArrow:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == textField.lines.Count - 1)
{
cp.charIndex = textField.charPositions.Count - 1;
}
else
{
TextField.LineInfo line = textField.lines[cp.lineIndex + 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
}
AdjustCaret(cp, !evt.shift);
break;
}
case KeyCode.PageUp:
{
context.PreventDefault();
ClearSelection();
break;
}
case KeyCode.PageDown:
{
context.PreventDefault();
ClearSelection();
break;
}
case KeyCode.Home:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MinValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
case KeyCode.End:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MaxValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
//Select All
case KeyCode.A:
{
if (evt.ctrl)
{
context.PreventDefault();
_selectionStart = 0;
AdjustCaret(GetCharPosition(int.MaxValue));
}
break;
}
//Copy
case KeyCode.C:
{
if (evt.ctrl && !_displayAsPassword)
{
context.PreventDefault();
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
}
}
break;
}
//Paste
case KeyCode.V:
{
if (evt.ctrl)
{
context.PreventDefault();
DoPaste();
}
break;
}
//Cut
case KeyCode.X:
{
if (evt.ctrl && !_displayAsPassword)
{
context.PreventDefault();
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
ReplaceSelection(null);
}
}
break;
}
case KeyCode.Return:
case KeyCode.KeypadEnter:
{
if (textField.singleLine)
{
onSubmit.Call();
return;
}
break;
}
}
char c = evt.character;
if (c != 0)
{
if (evt.ctrl)
{
return;
}
if (c == '\r' || (int)c == 3)
{
c = '\n';
}
if (c == 127 || textField.singleLine && c == '\n')
{
return;
}
if (char.IsHighSurrogate(c))
{
_highSurrogateChar = c;
return;
}
if (char.IsLowSurrogate(c))
{
ReplaceSelection(char.ConvertFromUtf32(((int)c & 0x03FF) + ((((int)_highSurrogateChar & 0x03FF) + 0x40) << 10)));
}
else
{
ReplaceSelection(c.ToString());
}
}
else
{
if (Input.compositionString.Length > 0)
{
UpdateText();
}
}
}
void __keydown(EventContext context)
{
if (!_editing || context.isDefaultPrevented)
{
return;
}
InputEvent evt = context.inputEvent;
switch (evt.keyCode)
{
case Keys.Back:
{
if (textField.text.Length > 0)
{
IMEAdapter.compositionString = textField.text.Remove(textField.text.Length - 1, 1);
}
context.PreventDefault();
if (_selectionStart == _caretPosition && _caretPosition > 0)
{
_selectionStart = _caretPosition - 1;
}
ReplaceSelection(null);
break;
}
case Keys.Delete:
{
context.PreventDefault();
if (_selectionStart == _caretPosition && _caretPosition < textField.charPositions.Count - 1)
{
_selectionStart = _caretPosition + 1;
}
ReplaceSelection(null);
break;
}
case Keys.Left:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
if (_caretPosition > 0)
{
TextField.CharPosition cp = GetCharPosition(_caretPosition - 1);
AdjustCaret(cp, !evt.shift);
}
break;
}
case Keys.Right:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
if (_caretPosition < textField.charPositions.Count - 1)
{
TextField.CharPosition cp = GetCharPosition(_caretPosition + 1);
AdjustCaret(cp, !evt.shift);
}
break;
}
case Keys.Up:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == 0)
{
return;
}
TextField.LineInfo line = textField.lines[cp.lineIndex - 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
case Keys.Down:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == textField.lines.Count - 1)
{
cp.charIndex = textField.charPositions.Count - 1;
}
else
{
TextField.LineInfo line = textField.lines[cp.lineIndex + 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
}
AdjustCaret(cp, !evt.shift);
break;
}
case Keys.PageUp:
{
context.PreventDefault();
ClearSelection();
break;
}
case Keys.PageDown:
{
context.PreventDefault();
ClearSelection();
break;
}
case Keys.Home:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MinValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
case Keys.End:
{
context.PreventDefault();
if (!evt.shift)
{
ClearSelection();
}
TextField.CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MaxValue, line.y + textField.y));
AdjustCaret(cp, !evt.shift);
break;
}
//Select All
case Keys.A:
{
if (evt.ctrl)
{
context.PreventDefault();
_selectionStart = 0;
AdjustCaret(GetCharPosition(int.MaxValue));
}
break;
}
//Copy
case Keys.C:
{
if (evt.ctrl && !_displayAsPassword)
{
context.PreventDefault();
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
}
}
break;
}
//Paste
case Keys.V:
{
if (evt.ctrl)
{
context.PreventDefault();
DoPaste();
}
break;
}
//Cut
case Keys.X:
{
if (evt.ctrl && !_displayAsPassword)
{
context.PreventDefault();
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
ReplaceSelection(null);
}
}
break;
}
case Keys.Enter:
{
if (textField.singleLine)
{
DispatchEvent("onSubmit", null);
return;
}
break;
}
}
if (evt.ctrl)
{
return;
}
string str = evt.KeyName;
if (!string.IsNullOrEmpty(str) && IMEAdapter.compositionMode == IMEAdapter.CompositionMode.Off)
{
if (textField.singleLine && str == "\n")
{
return;
}
ReplaceSelection(str);
}
else
{
if (IMEAdapter.compositionString.Length > 0)
{
UpdateText();
}
}
}
void UpdateCaret(bool forceUpdate = false)
{
TextField.CharPosition cp;
if (_editing)
{
cp = GetCharPosition(_caretPosition + IMEAdapter.compositionString.Length);
}
else
{
cp = GetCharPosition(_caretPosition);
}
Vector2 pos = GetCharLocation(cp);
TextField.LineInfo line = textField.lines[cp.lineIndex];
pos.Y = line.y + textField.y;
Vector2 newPos = pos;
if (newPos.X < textField.textFormat.size)
{
newPos.X += Math.Min(50, (int)(_contentRect.Width / 2));
}
else if (newPos.X > _contentRect.Width - GUTTER_X - textField.textFormat.size)
{
newPos.X -= Math.Min(50, (int)(_contentRect.Width / 2));
}
if (newPos.X < GUTTER_X)
{
newPos.X = GUTTER_X;
}
else if (newPos.X > _contentRect.Width - GUTTER_X)
{
newPos.X = Math.Max(GUTTER_X, _contentRect.Width - GUTTER_X);
}
if (newPos.Y < GUTTER_Y)
{
newPos.Y = GUTTER_Y;
}
else if (newPos.Y + line.height >= _contentRect.Height - GUTTER_Y)
{
newPos.Y = Math.Max(GUTTER_Y, _contentRect.Height - line.height - GUTTER_Y);
}
pos += MoveContent(newPos - pos, forceUpdate);
if (_editing)
{
if (line.height > 0) //将光标居中
{
pos.Y += (int)(line.height - textField.textFormat.size) / 2;
}
_caret.SetPosition(pos.X, pos.Y, 0);
Vector2 cursorPos = _caret.LocalToGlobal(new Vector2(0, _caret.height));
IMEAdapter.compositionCursorPos = cursorPos;
_nextBlink = Timers.time + 0.5f;
_caret.graphics.enabled = true;
UpdateSelection(cp);
}
}
void __keydown(EventContext context)
{
if (!_editing || context.isDefaultPrevented)
{
return;
}
InputEvent evt = context.inputEvent;
switch (evt.keyCode)
{
case KeyCode.Backspace:
{
context.PreventDefault();
if (_selectionStart != null)
{
ReplaceSelection(null);
}
else if (_caretPosition > 0)
{
int tmp = _caretPosition;
_caretPosition--;
ReplaceText(textField.text.Substring(0, tmp - 1) + textField.text.Substring(tmp));
}
break;
}
case KeyCode.Delete:
{
context.PreventDefault();
if (_selectionStart != null)
{
ReplaceSelection(null);
}
else if (_caretPosition < textField.text.Length)
{
ReplaceText(textField.text.Substring(0, _caretPosition) + textField.text.Substring(_caretPosition + 1));
}
break;
}
case KeyCode.LeftArrow:
{
context.PreventDefault();
if (evt.shift)
{
if (_selectionStart == null)
{
_selectionStart = GetCharPosition(_caretPosition);
}
}
else
{
ClearSelection();
}
if (_caretPosition > 0)
{
CharPosition cp = GetCharPosition(_caretPosition - 1);
AdjustCaret(cp);
}
break;
}
case KeyCode.RightArrow:
{
context.PreventDefault();
if (evt.shift)
{
if (_selectionStart == null)
{
_selectionStart = GetCharPosition(_caretPosition);
}
}
else
{
ClearSelection();
}
if (_caretPosition < textField.text.Length)
{
CharPosition cp = GetCharPosition(_caretPosition + 1);
AdjustCaret(cp);
}
break;
}
case KeyCode.UpArrow:
{
context.PreventDefault();
if (evt.shift)
{
if (_selectionStart == null)
{
_selectionStart = GetCharPosition(_caretPosition);
}
}
else
{
ClearSelection();
}
CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == 0)
{
return;
}
TextField.LineInfo line = textField.lines[cp.lineIndex - 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
AdjustCaret(cp);
break;
}
case KeyCode.DownArrow:
{
context.PreventDefault();
if (evt.shift)
{
if (_selectionStart == null)
{
_selectionStart = GetCharPosition(_caretPosition);
}
}
else
{
ClearSelection();
}
CharPosition cp = GetCharPosition(_caretPosition);
if (cp.lineIndex == textField.lines.Count - 1)
{
cp.charIndex = textField.charPositions.Count - 1;
}
else
{
TextField.LineInfo line = textField.lines[cp.lineIndex + 1];
cp = GetCharPosition(new Vector2(_caret.x, line.y + textField.y));
}
AdjustCaret(cp);
break;
}
case KeyCode.PageUp:
{
context.PreventDefault();
ClearSelection();
break;
}
case KeyCode.PageDown:
{
context.PreventDefault();
ClearSelection();
break;
}
case KeyCode.Home:
{
context.PreventDefault();
ClearSelection();
CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MinValue, line.y + textField.y));
AdjustCaret(cp);
break;
}
case KeyCode.End:
{
context.PreventDefault();
ClearSelection();
CharPosition cp = GetCharPosition(_caretPosition);
TextField.LineInfo line = textField.lines[cp.lineIndex];
cp = GetCharPosition(new Vector2(int.MaxValue, line.y + textField.y));
AdjustCaret(cp);
break;
}
//Select All
case KeyCode.A:
{
if (evt.ctrl)
{
context.PreventDefault();
_selectionStart = GetCharPosition(0);
AdjustCaret(GetCharPosition(textField.text.Length));
}
break;
}
//Copy
case KeyCode.C:
{
if (evt.ctrl && !_displayAsPassword)
{
context.PreventDefault();
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
}
}
break;
}
//Paste
case KeyCode.V:
{
if (evt.ctrl)
{
context.PreventDefault();
DoPaste();
}
break;
}
//Cut
case KeyCode.X:
{
if (evt.ctrl && !_displayAsPassword)
{
context.PreventDefault();
string s = GetSelection();
if (!string.IsNullOrEmpty(s))
{
DoCopy(s);
ReplaceSelection(null);
}
}
break;
}
case KeyCode.Return:
case KeyCode.KeypadEnter:
{
if (!evt.ctrl && !evt.shift)
{
context.PreventDefault();
if (!textField.singleLine)
{
ReplaceSelection("\n");
}
}
break;
}
}
}
void UpdateCaret(bool forceUpdate = false)
{
TextField.CharPosition cp;
if (_editing)
{
cp = GetCharPosition(_caretPosition + Input.compositionString.Length);
}
else
{
cp = GetCharPosition(_caretPosition);
}
Vector2 pos = GetCharLocation(cp);
TextField.LineInfo line = textField.lines[cp.lineIndex];
pos.y = line.y + textField.y;
Vector2 newPos = pos;
if (newPos.x < textField.textFormat.size)
{
newPos.x += Math.Min(50, (int)(_contentRect.width / 2));
}
else if (newPos.x > _contentRect.width - GUTTER_X - textField.textFormat.size)
{
newPos.x -= Math.Min(50, (int)(_contentRect.width / 2));
}
if (newPos.x < GUTTER_X)
{
newPos.x = GUTTER_X;
}
else if (newPos.x > _contentRect.width - GUTTER_X)
{
newPos.x = Math.Max(GUTTER_X, _contentRect.width - GUTTER_X);
}
if (newPos.y < GUTTER_Y)
{
newPos.y = GUTTER_Y;
}
else if (newPos.y + line.height >= _contentRect.height - GUTTER_Y)
{
newPos.y = Math.Max(GUTTER_Y, _contentRect.height - line.height - GUTTER_Y);
}
pos += MoveContent(newPos - pos, forceUpdate);
if (_editing)
{
if (line.height > 0) //将光标居中
{
pos.y += (int)(line.height - textField.textFormat.size) / 2;
}
_caret.SetPosition(pos.x, pos.y, 0);
Vector2 cursorPos = _caret.LocalToGlobal(new Vector2(0, _caret.height));
Input.compositionCursorPos = UIScreen.UIScreenPosToScreenPos(cursorPos);
_nextBlink = Time.time + 0.5f;
_caret.graphics.enabled = true;
UpdateSelection(cp);
}
}
