/// <summary>
/// Renders the actual tabs
/// </summary>
/// <param name="dc">The dc.</param>
/// <param name="tabItemsPanel">The tab items panel.</param>
public void Render(DrawingContext dc, TabItemsPanel tabItemsPanel)
{
// Making sure we have a selected page.
if (tabItemsPanel.SelectedPage < 0)
{
var visibleCounter = -1;
foreach (var element in tabItemsPanel.Children.OfType <UIElement>())
{
visibleCounter++;
if (TabItemsPanel.GetTabVisibility(element) == Visibility.Visible)
{
tabItemsPanel.SelectedPage = visibleCounter;
break;
}
}
return;
}
// Making sure the selected page is in fact visible
var allPages = tabItemsPanel.Children.OfType <UIElement>().ToList();
if (TabItemsPanel.GetTabVisibility(allPages[tabItemsPanel.SelectedPage]) != Visibility.Visible)
{
var visibleCounter = -1;
foreach (var element in tabItemsPanel.Children.OfType <UIElement>())
{
visibleCounter++;
if (TabItemsPanel.GetTabVisibility(element) == Visibility.Visible)
{
tabItemsPanel.SelectedPage = visibleCounter;
break;
}
}
return;
}
_pageHeaders.Clear();
foreach (var element in tabItemsPanel.Children.OfType <UIElement>())
{
var header = SimpleView.GetTitle(element).Trim();
if (string.IsNullOrEmpty(header))
{
header = "Item";
}
_pageHeaders.Add(header);
}
_headerRectangles.Clear();
var boldType = new Typeface(FontFamily, FontStyles.Normal, FontWeights.Bold, FontStretches.Normal);
var regularType = new Typeface(new FontFamily("Segoe UI"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
var linePen = new Pen(Brushes.Gray, 1d);
var highlightPen = new Pen(Brushes.RoyalBlue, 2d);
dc.DrawLine(linePen, new Point(0, 29.5), new Point(tabItemsPanel.ActualWidth, 29.5));
var counter = -1;
var left = 5d;
foreach (var element in tabItemsPanel.Children.OfType <UIElement>())
{
counter++;
if (TabItemsPanel.GetTabVisibility(element) != Visibility.Visible)
{
_headerRectangles.Add(Rect.Empty);
continue;
}
if (counter == tabItemsPanel.SelectedPage)
{
var ft = new FormattedText(_pageHeaders[counter], CultureInfo.CurrentUICulture, FlowDirection.LeftToRight, boldType, 11d, Brushes.Black);
var textWidth = ft.Width;
var headerRect = new Rect(left, 0, textWidth + 20, 30);
_headerRectangles.Add(headerRect);
dc.DrawRectangle(Brushes.White, null, headerRect);
dc.DrawLine(linePen, new Point(left, 3), new Point(left, 30));
dc.DrawLine(linePen, new Point(left + textWidth + 20, 3), new Point(left + textWidth + 20, 30));
dc.DrawLine(highlightPen, new Point(left, 2), new Point(left + textWidth + 20, 2));
dc.DrawText(ft, new Point(left + 10, 7));
left += textWidth + 20;
}
else
{
var ft = new FormattedText(_pageHeaders[counter], CultureInfo.CurrentUICulture, FlowDirection.LeftToRight, regularType, 11d, Brushes.Black);
var textWidth = ft.Width;
var headerRect = new Rect(left, 0, textWidth + 20, 30);
_headerRectangles.Add(headerRect);
dc.DrawRectangle(Brushes.Transparent, null, headerRect); // Makes the area hit-test visible
dc.DrawText(ft, new Point(left + 10, 7));
left += textWidth + 20;
}
}
}
/// <summary>
/// Handles a mouse click
/// </summary>
/// <param name="position">The position.</param>
/// <param name="mouseButtonEventArgs">The <see cref="MouseButtonEventArgs"/> instance containing the event data.</param>
/// <param name="tabItemsPanel">The tab items panel.</param>
public void MouseClick(Point position, MouseButtonEventArgs mouseButtonEventArgs, TabItemsPanel tabItemsPanel)
{
var counter = -1;
foreach (var rect in _headerRectangles)
{
counter++;
if (rect.Contains(position))
{
tabItemsPanel.SelectedPage = counter;
mouseButtonEventArgs.Handled = true;
return;
}
}
}
/// <summary>
/// Returns the size and position of the client area for child elements
/// </summary>
/// <param name="panel">The tab items panel.</param>
/// <param name="finalSize">The size of the tab items panel.</param>
/// <returns>Rect.</returns>
public Rect GetClientRect(TabItemsPanel panel, Size finalSize)
{
return(GeometryHelper.NewRect(2, HeaderHeight + 2, finalSize.Width - 4, finalSize.Height - HeaderHeight - 4));
}