|
public GetTextPointInfoFromCharIndex ( int charIndex ) : |
||
| charIndex | int | |
| return | ||
public void UpdateSelectionRange()
{
if (startPoint.TextRun != null && !startPoint.TextRun.HasParent)
{
EditableTextLine startLine = startPoint.EditableLine;
startPoint = startLine.GetTextPointInfoFromCharIndex(startPoint.LineCharIndex);
}
if (endPoint.TextRun != null && !endPoint.TextRun.HasParent)
{
EditableTextLine stopLine = endPoint.EditableLine;
endPoint = stopLine.GetTextPointInfoFromCharIndex(endPoint.LineCharIndex);
}
}
public Rectangle GetRectAreaOf(int beginlineNum, int beginColumnNum, int endLineNum, int endColumnNum)
{
EditableTextFlowLayer flowLayer = this.textLayer;
EditableTextLine beginLine = flowLayer.GetTextLineAtPos(beginlineNum);
if (beginLine == null)
{
return(Rectangle.Empty);
}
if (beginlineNum == endLineNum)
{
VisualPointInfo beginPoint = beginLine.GetTextPointInfoFromCharIndex(beginColumnNum);
VisualPointInfo endPoint = beginLine.GetTextPointInfoFromCharIndex(endColumnNum);
return(new Rectangle(beginPoint.X, beginLine.Top, endPoint.X, beginLine.ActualLineHeight));
}
else
{
VisualPointInfo beginPoint = beginLine.GetTextPointInfoFromCharIndex(beginColumnNum);
EditableTextLine endLine = flowLayer.GetTextLineAtPos(endLineNum);
VisualPointInfo endPoint = endLine.GetTextPointInfoFromCharIndex(endColumnNum);
return(new Rectangle(beginPoint.X, beginLine.Top, endPoint.X, beginLine.ActualLineHeight));
}
}
