ClemensFischer/XAML-Map-Control
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Added DependencyPropertyHelper

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ClemensFischer 2024-05-20 23:24:34 +02:00
parent 422f1dce0d
commit 3706709cfc
22 changed files with 967 additions and 1879 deletions
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44
MapControl/Avalonia/Map.Avalonia.cs
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@ -3,7 +3,6 @@
// Licensed under the Microsoft Public License (Ms-PL)
using Avalonia.Input;
using System.Threading;
namespace MapControl
{
@ -16,16 +15,6 @@ namespace MapControl
= AvaloniaProperty.Register<Map, double>(nameof(MouseWheelZoomDelta), 0.25);
private Point? mousePosition;
private double targetZoomLevel;
private CancellationTokenSource cancellationTokenSource;
public Map()
{
PointerWheelChanged += OnPointerWheelChanged;
PointerPressed += OnPointerPressed;
PointerReleased += OnPointerReleased;
PointerMoved += OnPointerMoved;
}
/// <summary>
/// Gets or sets the amount by which the ZoomLevel property changes by a MouseWheel event.
@ -37,30 +26,17 @@ namespace MapControl
set => SetValue(MouseWheelZoomDeltaProperty, value);
}
private async void OnPointerWheelChanged(object sender, PointerWheelEventArgs e)
protected override void OnPointerWheelChanged(PointerWheelEventArgs e)
{
var delta = MouseWheelZoomDelta * e.Delta.Y;
base.OnPointerWheelChanged(e);
if (cancellationTokenSource != null)
{
cancellationTokenSource.Cancel();
targetZoomLevel += delta;
}
else
{
targetZoomLevel = ZoomLevel + delta;
}
cancellationTokenSource = new CancellationTokenSource();
await ZoomMap(e.GetPosition(this), targetZoomLevel, cancellationTokenSource.Token);
cancellationTokenSource.Dispose();
cancellationTokenSource = null;
ZoomMap(e.GetPosition(this), TargetZoomLevel + MouseWheelZoomDelta * e.Delta.Y);
}
private void OnPointerPressed(object sender, PointerPressedEventArgs e)
protected override void OnPointerPressed(PointerPressedEventArgs e)
{
base.OnPointerPressed(e);
var point = e.GetCurrentPoint(this);
if (point.Properties.IsLeftButtonPressed)
@ -70,8 +46,10 @@ namespace MapControl
}
}
private void OnPointerReleased(object sender, PointerReleasedEventArgs e)
protected override void OnPointerReleased(PointerReleasedEventArgs e)
{
base.OnPointerReleased(e);
if (mousePosition.HasValue)
{
e.Pointer.Capture(null);
@ -79,8 +57,10 @@ namespace MapControl
}
}
private void OnPointerMoved(object sender, PointerEventArgs e)
protected override void OnPointerMoved(PointerEventArgs e)
{
base.OnPointerMoved(e);
if (mousePosition.HasValue)
{
var position = e.GetPosition(this);