private RectangleF getDocumentArea(Graphics g, RectangleF typingArea, SizeF cellSize)
{
RectangleF unlimitedHeightArea = getUnlimitedHeightArea(typingArea);
RectangleF cursorArea = getCursorCharArea(g, unlimitedHeightArea);
Point cursorColumnRow = getColumnRow(cursorArea.Location, unlimitedHeightArea.Location, cellSize);
oldCursorPositionChangedEventArgs = Util.RaiseIfEventArgsChanged(
OnCursorPositionChanged,
new CursorPositionChangedEventArgs(cursorColumnRow.Y + 1, cursorColumnRow.X + 1),
oldCursorPositionChangedEventArgs);
int currentLineColumns = ImportedText.LineLength(TypedText.Length);
Size documentColumnsRows = new Size(ImportedText.LongestLineLength,
getDocumentRows(g, unlimitedHeightArea, cellSize));
Size visibleColumnsRows = getVisibleColumnsRows(typingArea.Size, cellSize);
float hOffset = cellSize.Width * calcColumnOffset(cursorColumnRow.X, visibleColumnsRows.Width, documentColumnsRows.Width,
currentLineColumns),
vOffset = cellSize.Height * calcRowOffset(cursorColumnRow.Y, visibleColumnsRows.Height, documentColumnsRows.Height);
return(new RectangleF(typingArea.X + hOffset,
typingArea.Y + vOffset,
typingArea.Width,
typingArea.Height - vOffset));
}
