internal void DrawTab(Graphics g, TabPage tabPage, int nIndex)
{
Rectangle recBounds = GetTabRect(nIndex);
RectangleF tabTextArea = GetTabRect(nIndex);
bool hasErrors = CheckForErrors(tabPage.Controls);
bool isSelected = (SelectedIndex == nIndex);
var pt = GetPolyPoints(recBounds);
//-------------------------------------------//
//--- fill this tab with background color ---//
//-------------------------------------------//
Color tabBackColor = (hasErrors ? GetErrorColor(isSelected) :
isSelected ? tabPage.BackColor : UTRSGraphicsUtils.DarkenColor(tabPage.BackColor, 10)
);
DrawTabBackground(g, tabBackColor, pt);
DrawTabBorder(g, tabPage, pt, isSelected, ref recBounds);
DrawTabIcon(g, tabPage, nIndex, ref recBounds, ref tabTextArea, hasErrors);
DrawTabText(g, tabPage, ref tabTextArea, hasErrors);
}
private static void DrawTabBackground(Graphics g, Color tabBackColor, Point[] pt)
{
Rectangle rc = new Rectangle(pt[0], new Size(pt[5]));
GraphicsPath path = new GraphicsPath();
path.AddLines(pt);
using (LinearGradientBrush pthGrBrush = new LinearGradientBrush(rc, tabBackColor, UTRSGraphicsUtils.DarkenColor(tabBackColor, 5), LinearGradientMode.Vertical))
{
g.FillPath(pthGrBrush, path);
pthGrBrush.Dispose();
}
}
private Color GetErrorColor(bool isSelected)
{
return(isSelected ? _errColor : UTRSGraphicsUtils.DarkenColor(_errColor, 10));
}
