TheXamlGuy
89 lines
2.7 KiB
C#
89 lines
2.7 KiB
C#
using Microsoft.UI.Xaml;
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using Hyperbar.Windows.Win32;
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using Microsoft.UI.Xaml.Controls.Primitives;
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using Microsoft.UI.Xaml.Controls;
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namespace Hyperbar.Windows.Controls;
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internal class DesktopFlyoutHost : Window
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{
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private readonly DesktopFlyoutPresenter presenter;
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private DesktopFlyoutPlacement placement;
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private Popup? popup;
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public DesktopFlyoutHost(DesktopFlyoutPresenter presenter)
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{
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Border root = new();
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root.Loaded += OnLoaded;
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this.presenter = presenter;
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presenter.SizeChanged += OnChildSizeChanged;
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Content = root;
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this.SetOpacity(0);
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this.SetStyle(WindowStyle.SysMenu | WindowStyle.Visible);
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this.SetTopMost(true);
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this.SetIsShownInSwitchers(false);
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}
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internal void UpdatePlacement(DesktopFlyoutPlacement placement)
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{
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this.placement = placement;
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// Not ready
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if (popup is null)
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{
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return;
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}
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// presenter.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
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double height = presenter.DesiredSize.Height;
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double width = presenter.DesiredSize.Width;
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switch (placement)
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{
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case DesktopFlyoutPlacement.Left:
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this.Snap(WindowPlacement.Left, 0, 0);
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break;
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case DesktopFlyoutPlacement.Top:
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this.Snap(WindowPlacement.Top, width, height);
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break;
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case DesktopFlyoutPlacement.Right:
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this.Snap(WindowPlacement.Right, 0, 0);
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break;
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case DesktopFlyoutPlacement.Bottom:
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this.Snap(WindowPlacement.Bottom, width, height);
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break;
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default:
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break;
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}
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presenter.TemplateSettings.SetValue(DesktopFlyoutPresenterTemplateSettings.HeightProperty, height);
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presenter.TemplateSettings.SetValue(DesktopFlyoutPresenterTemplateSettings.WidthProperty, width);
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presenter.TemplateSettings.SetValue(DesktopFlyoutPresenterTemplateSettings.NegativeHeightProperty, -height);
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presenter.TemplateSettings.SetValue(DesktopFlyoutPresenterTemplateSettings.NegativeWidthProperty, -width);
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presenter.UpdatePlacementState(placement);
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}
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private void OnChildSizeChanged(object sender,
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SizeChangedEventArgs args) => UpdatePlacement(this.placement);
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private void OnLoaded(object sender,
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RoutedEventArgs args)
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{
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popup = new Popup
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{
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Child = presenter,
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XamlRoot = Content.XamlRoot,
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ShouldConstrainToRootBounds = false,
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IsOpen = true,
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};
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UpdatePlacement(placement);
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}
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}
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