protected override void DrawCaret(ICaret caret, Color color, ITextComponentWrapper text, Vector2 offset)
{
using (var helper = new VertexHelper())
{
caret.Draw(CalculateCaretDrawRect(text, offset, caret.GetIndex() - _drawStart), color, helper);
}
}
public SingleLineInputField(ICaret caret,
IInputEventProcessor inputEventProcessor,
IInputFieldController controller,
ITextComponentWrapper editableText
) : base(caret, inputEventProcessor, controller, editableText)
{
}
public MultiLineInputFieldImpl(
ICaret caret,
IInputEventProcessor inputEventProcessor,
IInputFieldController controller,
ITextComponentWrapper text)
: base(caret, inputEventProcessor, controller, text)
{
}
protected override void DrawSelection(ICaret caret, Color color, ITextComponentWrapper text, Vector2 offset)
{
int index = LocalIndex();
int selectionIndex = LocalSelectionIndex(text);
using (var helper = new VertexHelper())
{
Caret.Draw(CalculateCaretDrawRect(text, offset, index, selectionIndex), color, helper);
}
}
private Rect HightedLineRect(int startIndex, int endIndex, float height, ITextComponentWrapper text)
{
Vector2 start = text.CursorPositionAt(startIndex);
Vector2 end = text.CursorPositionAt(endIndex);
// FIXME: add last char width according to caret moving direction.
Rect rect = new Rect(start.x, start.y - height,
Mathf.Abs(end.x + text.CharWidth(endIndex + _drawStart) - start.x), height);
return(rect);
}
public AbstractInputField(ICaret caret,
IInputEventProcessor inputEventProcessor,
IInputFieldController controller,
ITextComponentWrapper text)
{
_editableText = text;
_caret = caret;
_inputEventProcessor = inputEventProcessor;
_controller = controller;
}
public virtual void DrawCaretOrSelection(ITextComponentWrapper text)
{
if (Caret.GetIndex() != Caret.GetSelectionIndex())
{
DrawSelection(Caret, SelectionColor, text, text.CaretOffset());
}
else
{
DrawCaret(Caret, DefaultColor, text, text.CaretOffset());
}
}
protected override void DrawSelection(ICaret caret, Color color, ITextComponentWrapper text, Vector2 offset)
{
var lines = CalculateSelectionRects(caret, text, offset);
using (var helper = new VertexHelper())
{
foreach (var rect in lines)
{
caret.Draw(rect, color, helper);
}
}
}
private Rect CalculateCaretDrawRect(
ITextComponentWrapper text,
Vector2 offset,
int relativeIndex)
{
Vector2 localCursorPos = text.CursorPositionAt(relativeIndex);
int line = text.GetLineByCharIndex(relativeIndex);
float height = text.LineHeight(line);
return(new Rect(localCursorPos.x + offset.x,
localCursorPos.y - height + offset.y, 1,
height));
}
protected override string ProcessText(ITextComponentWrapper editableText, ICaret caret)
{
// truncate text to display within the bounds of text rect.
Vector2 textRectExtents = editableText.DisplayRect.size;
float width = 0;
if (caret.GetIndex() > _drawEnd || (caret.GetIndex() == TextValue.Length && _drawStart > 0))
{
_drawEnd = caret.GetIndex();
_drawStart = _drawEnd - 1;
while (width < textRectExtents.x && _drawStart >= 0)
{
width += editableText.CharWidth(_drawStart--);
}
if (width >= textRectExtents.x)
{
_drawStart++;
}
_drawStart++;
}
else
{
if (caret.GetIndex() < _drawStart)
{
_drawStart = caret.GetIndex();
}
_drawEnd = _drawStart;
while (width < textRectExtents.x && _drawEnd < TextValue.Length)
{
width += editableText.CharWidth(_drawEnd++);
}
if (width >= textRectExtents.x)
{
_drawEnd--;
}
}
_drawStart = Mathf.Clamp(_drawStart, 0, TextValue.Length);
_drawEnd = Mathf.Clamp(_drawEnd, 0, TextValue.Length);
return(TextValue.Substring(_drawStart, _drawEnd - _drawStart));
}
private void initialize()
{
_editableText = new EditableText(_textComponent, new TextGenerator());
var caret = CreateCaret();
if (_lineType.Equals(LineType.SingleLine))
{
_impl = new VrInputFieldImpl(caret,
new SingleLineInputProcessor(new System.Text.StringBuilder(), new CaretNavigator(caret, _editableText, this)),
this,
_editableText);
}
else
{
_impl = new MultiLineInputFieldImpl(caret,
new BaseTextProcessor(new System.Text.StringBuilder(), new CaretNavigator(caret, _editableText, this)),
this,
_editableText);
}
}
protected override void Start()
{
base.Start();
_editableText = new EditableText(_textComponent, new TextGenerator());
var caret = CreateCaret();
if (_lineType.Equals(LineType.SingleLine))
{
Impl = new SingleLineInputField(caret,
new UnityTextProcessor(new System.Text.StringBuilder(), new CaretNavigator(caret, _editableText, this)),
this,
_editableText);
}
else
{
Impl = new MultiLineInputField(caret,
new UnityTextProcessor(new System.Text.StringBuilder(), new CaretNavigator(caret, _editableText, this)),
this,
_editableText);
}
}
private Rect CalculateCaretDrawRect(
ITextComponentWrapper text,
Vector2 offset,
int index,
int selectionIndex)
{
Vector2 localCursorPos = text.CursorPositionAt(index);
Vector2 localSelectionPos = text.CursorPositionAt(selectionIndex);
float height = text.LineHeight(0);
if (index > selectionIndex)
{
Vector2 temp = localSelectionPos;
localSelectionPos = localCursorPos;
localCursorPos = temp;
}
return(new Rect(localCursorPos.x + offset.x,
localCursorPos.y - height + offset.y,
index != selectionIndex ? Mathf.Abs(localSelectionPos.x - localCursorPos.x) : 1,
height));
}
private List <Rect> CalculateSelectionRects(ICaret caret, ITextComponentWrapper text, Vector2 offset)
{
List <Rect> highlightRects = new List <Rect>();
int start = Mathf.Min(caret.GetIndex(), caret.GetSelectionIndex()) - _drawStart;
start = Mathf.Clamp(start, 0, text.DisplayedTextLength);
int end = Mathf.Max(caret.GetIndex(), caret.GetSelectionIndex()) - _drawStart;
end = Mathf.Clamp(end, 0, text.DisplayedTextLength);
int startLine = text.GetLineByCharIndex(start);
int endLine = text.GetLineByCharIndex(end);
if (startLine == endLine)
{
highlightRects.Add(HightedLineRect(start, end, text.LineHeight(startLine), text));
}
else
{
int currentLineEndIndex = text.LineEndIndex(startLine);
highlightRects.Add(HightedLineRect(start, currentLineEndIndex, text.LineHeight(startLine), text));
while (startLine < endLine - 1)
{
startLine++;
highlightRects.Add(HightedLineRect(
text.LineStartIndex(startLine),
text.LineEndIndex(startLine),
text.LineHeight(startLine),
text));
}
highlightRects.Add(HightedLineRect(
text.LineStartIndex(endLine), end, text.LineHeight(endLine), text));
}
return(highlightRects);
}
protected override string ProcessText(ITextComponentWrapper text, ICaret caret)
{
Vector2 extents = text.DisplayRect.size;
int caretLine = text.GetLineByCharIndex(caret.GetIndex());
if (caret.GetIndex() > _drawEnd)
{
_drawEnd = text.LineEndIndex(caretLine);
float bottomY = text.LineTop(caretLine) - text.LineHeight(caretLine);
// TODO: Remove interline spacing on last line.
int startLine = caretLine;
while (startLine > 0)
{
float topY = text.LineTop(startLine - 1);
if (topY - bottomY > extents.y)
{
break;
}
startLine--;
}
_drawStart = text.LineStartIndex(startLine);
}
else
{
if (caret.GetIndex() < _drawStart)
{
_drawStart = text.LineStartIndex(caretLine);
}
int startLine = text.GetLineByCharIndex(_drawStart);
int endLine = startLine;
float topY = text.LineTop(startLine);
float bottomY = text.LineTop(endLine) - text.LineHeight(endLine);
// TODO: Remove interline spacing on last line.
while (endLine < text.LineCount - 1)
{
bottomY = text.LineTop(endLine + 1) - text.LineHeight(endLine + 1);
// TODO: Remove interline spacing on last line.
if (topY - bottomY > extents.y)
{
break;
}
++endLine;
}
_drawEnd = text.LineEndIndex(endLine);
while (startLine > 0)
{
topY = text.LineTop(startLine - 1);
if (topY - bottomY > extents.y)
{
break;
}
startLine--;
}
_drawStart = text.LineStartIndex(startLine);
}
return(TextValue.Substring(_drawStart, _drawEnd - _drawStart));
}
private int LocalSelectionIndex(ITextComponentWrapper text)
{
// selection index could be out of bounds.
return(Mathf.Clamp(Caret.GetSelectionIndex() - _drawStart, 0, text.DisplayedTextLength));
}
protected abstract void DrawCaret(ICaret caret, Color color, ITextComponentWrapper text, Vector2 offset);
public CaretNavigator(ICaret caret, ITextComponentWrapper text, IVrInputField inputField)
{
_caret = caret;
_textWrapper = text;
_inputField = inputField;
}
protected abstract string ProcessText(ITextComponentWrapper text, ICaret caret);
