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Map and MapItem input handling

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ClemensFischer 2025-03-19 11:14:13 +01:00
parent 9da6a13950
commit 74d3a4adfe
8 changed files with 241 additions and 104 deletions
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42
MapControl/WinUI/MapItem.WinUI.cs
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@ -1,10 +1,13 @@
using Windows.System;
using System;
using Windows.System;
#if UWP
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
#else
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Input;
#endif
@ -25,25 +28,44 @@ namespace MapControl
item.UpdateMapTransform(newValue);
});
// Used to detect pointer movement between PointerPressed and
// PointerReleased in order to possibly cancel item selection.
//
private const float pointerMovementThreshold = 2f;
private Windows.Foundation.Point pointerPressedPosition;
public MapItem()
{
DefaultStyleKey = typeof(MapItem);
MapPanel.InitMapElement(this);
}
protected override void OnPointerPressed(PointerRoutedEventArgs e)
{
base.OnPointerPressed(e);
pointerPressedPosition = e.GetCurrentPoint(null).Position;
}
protected override void OnPointerReleased(PointerRoutedEventArgs e)
{
// In contrast to WPF and Avalonia, item selection is done on PointerReleased.
//
if (e.KeyModifiers.HasFlag(VirtualKeyModifiers.Shift))
var p = e.GetCurrentPoint(null).Position;
if (Math.Abs(p.X - pointerPressedPosition.X) <= pointerMovementThreshold &&
Math.Abs(p.Y - pointerPressedPosition.Y) <= pointerMovementThreshold &&
ItemsControl.ItemsControlFromItemContainer(this) is MapItemsControl mapItemsControl)
{
e.Handled = true;
MapItemsControl.SelectItemsInRange(this);
}
else
{
base.OnPointerReleased(e);
if (mapItemsControl.SelectionMode == SelectionMode.Extended &&
e.KeyModifiers.HasFlag(VirtualKeyModifiers.Shift))
{
mapItemsControl.SelectItemsInRange(this);
}
else
{
base.OnPointerReleased(e);
}
}
e.Handled = true;
}
protected override void OnApplyTemplate()