ClemensFischer/XAML-Map-Control
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Partial class Map

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ClemensFischer 2025-06-12 07:41:01 +02:00
parent cceb122486
commit 5777e9cff3
6 changed files with 101 additions and 158 deletions
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57
MapControl/WPF/Map.WPF.cs
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@ -1,30 +1,18 @@
using System;
using System.Windows;
using System.Windows;
using System.Windows.Input;
namespace MapControl
{
/// <summary>
/// MapBase with default input event handling.
/// </summary>
public class Map : MapBase
public partial class Map
{
public static readonly DependencyProperty ManipulationModeProperty =
DependencyPropertyHelper.Register<Map, ManipulationModes>(nameof(ManipulationMode), ManipulationModes.Translate | ManipulationModes.Scale);
public static readonly DependencyProperty MouseWheelZoomDeltaProperty =
DependencyPropertyHelper.Register<Map, double>(nameof(MouseWheelZoomDelta), 0.25);
public static readonly DependencyProperty MouseWheelZoomAnimatedProperty =
DependencyPropertyHelper.Register<Map, bool>(nameof(MouseWheelZoomAnimated), true);
private Point? mousePosition;
static Map()
{
IsManipulationEnabledProperty.OverrideMetadata(typeof(Map), new FrameworkPropertyMetadata(true));
}
public static readonly DependencyProperty ManipulationModeProperty =
DependencyPropertyHelper.Register<Map, ManipulationModes>(nameof(ManipulationMode), ManipulationModes.Translate | ManipulationModes.Scale);
/// <summary>
/// Gets or sets a value that specifies how the map control handles manipulations.
/// </summary>
@ -34,42 +22,11 @@ namespace MapControl
set => SetValue(ManipulationModeProperty, value);
}
/// <summary>
/// Gets or sets the amount by which the ZoomLevel property changes by a MouseWheel event.
/// The default value is 0.25.
/// </summary>
public double MouseWheelZoomDelta
{
get => (double)GetValue(MouseWheelZoomDeltaProperty);
set => SetValue(MouseWheelZoomDeltaProperty, value);
}
/// <summary>
/// Gets or sets a value that controls whether zooming by a MouseWheel event is animated.
/// The default value is true.
/// </summary>
public bool MouseWheelZoomAnimated
{
get => (bool)GetValue(MouseWheelZoomAnimatedProperty);
set => SetValue(MouseWheelZoomAnimatedProperty, value);
}
private Point? mousePosition;
protected override void OnMouseWheel(MouseWheelEventArgs e)
{
var zoomLevel = TargetZoomLevel + MouseWheelZoomDelta * e.Delta / 120d;
var animated = false;
if (e.Delta % 120 == 0)
{
// Zoom to integer multiple of MouseWheelZoomDelta when delta is a multiple of 120,
// i.e. when the event was actually raised by a mouse wheel and not by a touch pad
// or a similar device with higher resolution.
//
zoomLevel = MouseWheelZoomDelta * Math.Round(zoomLevel / MouseWheelZoomDelta);
animated = MouseWheelZoomAnimated;
}
ZoomMap(e.GetPosition(this), zoomLevel, animated);
OnMouseWheel(e.GetPosition(this), e.Delta);
base.OnMouseWheel(e);
}