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Improve touch input handling

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This commit is contained in:
ClemensFischer 2022-11-12 11:08:10 +01:00
parent 7448daa531
commit 47a96b22cc
4 changed files with 17 additions and 47 deletions
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11
MapControl/Shared/MapImageLayer.cs
View file

@ -149,8 +149,15 @@ namespace MapControl
}
else if (Children.Count == 0)
{
Children.Add(new Image { Opacity = 0d, Stretch = Stretch.Fill });
Children.Add(new Image { Opacity = 0d, Stretch = Stretch.Fill });
for (int i = 0; i < 2; i++)
{
Children.Add(new Image
{
Opacity = 0d,
Stretch = Stretch.Fill,
IsHitTestVisible = false // avoid touch capture issues
});
}
}
base.SetParentMap(map);

2
MapControl/Shared/MapTileLayerBase.cs
View file

@ -52,7 +52,7 @@ namespace MapControl
new PropertyMetadata(TimeSpan.FromSeconds(0.2), (o, e) => ((MapTileLayerBase)o).updateTimer.Interval = (TimeSpan)e.NewValue));
public static readonly DependencyProperty UpdateWhileViewportChangingProperty = DependencyProperty.Register(
nameof(UpdateWhileViewportChanging), typeof(bool), typeof(MapTileLayerBase), new PropertyMetadata(false));
nameof(UpdateWhileViewportChanging), typeof(bool), typeof(MapTileLayerBase), new PropertyMetadata(true));
public static readonly DependencyProperty MapBackgroundProperty = DependencyProperty.Register(
nameof(MapBackground), typeof(Brush), typeof(MapTileLayerBase), new PropertyMetadata(null));

7
MapControl/Shared/Tile.cs
View file

@ -43,7 +43,12 @@ namespace MapControl
}
}
public Image Image { get; } = new Image { Opacity = 0d, Stretch = Stretch.Fill };
public Image Image { get; } = new Image
{
Opacity = 0d,
Stretch = Stretch.Fill,
IsHitTestVisible = false // avoid touch capture issues
};
public bool Pending { get; set; } = true;

44
MapControl/WinUI/Map.WinUI.cs
View file

@ -23,7 +23,6 @@ namespace MapControl
public static readonly DependencyProperty MouseWheelZoomDeltaProperty = DependencyProperty.Register(
nameof(MouseWheelZoomDelta), typeof(double), typeof(Map), new PropertyMetadata(0.25));
private Point? mousePosition;
private double mouseWheelDelta;
public Map()
@ -35,9 +34,6 @@ namespace MapControl
| ManipulationModes.TranslateInertia;
ManipulationDelta += OnManipulationDelta;
PointerPressed += OnPointerPressed;
PointerReleased += OnPointerReleased;
PointerMoved += OnPointerMoved;
PointerWheelChanged += OnPointerWheelChanged;
}
@ -53,45 +49,7 @@ namespace MapControl
private void OnManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)
{
if (!mousePosition.HasValue)
{
TransformMap(e.Position, e.Delta.Translation, e.Delta.Rotation, e.Delta.Scale);
}
}
private void OnPointerPressed(object sender, PointerRoutedEventArgs e)
{
if (e.Pointer.PointerDeviceType == PointerDeviceType.Mouse &&
CapturePointer(e.Pointer))
{
mousePosition = e.GetCurrentPoint(this).Position;
}
}
private void OnPointerReleased(object sender, PointerRoutedEventArgs e)
{
if (e.Pointer.PointerDeviceType == PointerDeviceType.Mouse &&
mousePosition.HasValue)
{
mousePosition = null;
ReleasePointerCaptures();
}
}
private void OnPointerMoved(object sender, PointerRoutedEventArgs e)
{
// Perform translation by explicit Mouse input because with Manipulation pointer capture is
// lost when Map content changes, e.g. when a MapTileLayer or WmsImageLayer loads new images.
if (e.Pointer.PointerDeviceType == PointerDeviceType.Mouse &&
mousePosition.HasValue)
{
Point position = e.GetCurrentPoint(this).Position;
var translation = position - mousePosition.Value;
mousePosition = position;
TranslateMap(translation);
}
TransformMap(e.Position, e.Delta.Translation, e.Delta.Rotation, e.Delta.Scale);
}
private void OnPointerWheelChanged(object sender, PointerRoutedEventArgs e)