private static void OnIsDisabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d is UIElement element)
{
if ((bool)e.NewValue)
{
element.PreviewMouseWheel += ScrollViewerPreviewMouseWheel;
}
else
{
element.PreviewMouseWheel -= ScrollViewerPreviewMouseWheel;
}
}
void ScrollViewerPreviewMouseWheel(object sender, MouseWheelEventArgs args)
{
if (args.Handled)
{
return;
}
args.Handled = true;
if (VisualHelper.GetParent <System.Windows.Controls.ScrollViewer>((UIElement)sender) is { } scrollViewer)
{
scrollViewer.RaiseEvent(new MouseWheelEventArgs(args.MouseDevice, args.Timestamp, args.Delta)
{
RoutedEvent = UIElement.MouseWheelEvent,
Source = sender
});
}
}
}
public override Style SelectStyle(object item, DependencyObject container)
{
if (container is TabItem tabItem && VisualHelper.GetParent <TabControl>(tabItem) is { } tabControl)
{
var count = tabControl.Items.Count;
if (count == 1)
{
return(ResourceHelper.GetResourceInternal <Style>(ResourceToken.TabItemCapsuleSingle));
}
var index = tabControl.ItemContainerGenerator.IndexFromContainer(tabItem);
return(index == 0
? ResourceHelper.GetResourceInternal <Style>(
tabControl.TabStripPlacement == Dock.Top || tabControl.TabStripPlacement == Dock.Bottom
? ResourceToken.TabItemCapsuleHorizontalFirst
: ResourceToken.TabItemCapsuleVerticalFirst)
: ResourceHelper.GetResourceInternal <Style>(index == count - 1
? tabControl.TabStripPlacement == Dock.Top || tabControl.TabStripPlacement == Dock.Bottom
? ResourceToken.TabItemCapsuleHorizontalLast
: ResourceToken.TabItemCapsuleVerticalLast
: ResourceToken.TabItemCapsuleDefault));
}
return(null);
}
private static void Popup_Opened(object sender, EventArgs e)
{
var popup = (Popup)sender;
if (popup.TemplatedParent is MenuItem menuItem)
{
var topLine = GetTopLine(menuItem);
if (topLine == null)
{
return;
}
topLine.HorizontalAlignment = HorizontalAlignment.Left;
topLine.Width = menuItem.ActualWidth;
topLine.Margin = new Thickness();
var positionLeftTop = menuItem.PointToScreen(new Point());
var positionRightBottom = menuItem.PointToScreen(new Point(menuItem.ActualWidth, menuItem.ActualHeight));
ScreenHelper.FindMonitorRectsFromPoint(InteropMethods.GetCursorPos(), out _, out var workAreaRect);
var panel = VisualHelper.GetParent <Panel>(topLine);
if (positionLeftTop.X < 0)
{
topLine.Margin = new Thickness(positionLeftTop.X - panel.Margin.Left, 0, 0, 0);
}
else if (positionLeftTop.X + panel.ActualWidth > workAreaRect.Right)
{
var overflowWidth = positionRightBottom.X - workAreaRect.Right;
if (overflowWidth > 0)
{
topLine.Width -= overflowWidth + panel.Margin.Right;
}
topLine.HorizontalAlignment = HorizontalAlignment.Left;
topLine.Margin = new Thickness(positionLeftTop.X + panel.ActualWidth - workAreaRect.Right + panel.Margin.Right, 0, 0, 0);
}
if (positionRightBottom.Y > workAreaRect.Bottom)
{
topLine.Width = 0;
topLine.HorizontalAlignment = HorizontalAlignment.Stretch;
topLine.Margin = new Thickness();
}
}
}
public override Style SelectStyle(object item, DependencyObject container)
{
if (container is ComboBoxItem comboBoxItem && VisualHelper.GetParent <ComboBox>(comboBoxItem) is { } comboBox)
{
var count = comboBox.Items.Count;
if (count == 1)
{
return(ResourceHelper.GetResourceInternal <Style>(ResourceToken.ComboBoxItemCapsuleSingle));
}
var index = comboBox.ItemContainerGenerator.IndexFromContainer(comboBoxItem);
return(index == 0
? ResourceHelper.GetResourceInternal <Style>(ResourceToken.ComboBoxItemCapsuleHorizontalFirst)
: ResourceHelper.GetResourceInternal <Style>(index == count - 1
? ResourceToken.ComboBoxItemCapsuleHorizontalLast
: ResourceToken.ComboBoxItemCapsuleDefault));
}
return(null);
}