ClemensFischer/XAML-Map-Control
1
0
Fork 0
mirror of https://github.com/ClemensFischer/XAML-Map-Control.git synced 2026-04-04 22:18:56 +00:00
Code Issues Projects Releases Packages Wiki Activity

Updated mouse wheel event handling

Browse source
This commit is contained in:
ClemensFischer 2025-06-12 00:31:01 +02:00
parent 140f800f33
commit cceb122486
4 changed files with 122 additions and 74 deletions
Download patch file Download diff file Expand all files Collapse all files

89
MapControl/WPF/Map.WPF.cs
View file

@ -9,20 +9,31 @@ namespace MapControl
/// </summary>
public class Map : MapBase
{
public static readonly DependencyProperty MouseWheelZoomDeltaProperty =
DependencyPropertyHelper.Register<Map, double>(nameof(MouseWheelZoomDelta), 0.25);
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;
private double mouseWheelDelta;
static Map()
{
IsManipulationEnabledProperty.OverrideMetadata(typeof(Map), new FrameworkPropertyMetadata(true));
}
/// <summary>
/// Gets or sets a value that specifies how the map control handles manipulations.
/// </summary>
public ManipulationModes ManipulationMode
{
get => (ManipulationModes)GetValue(ManipulationModeProperty);
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.
@ -34,57 +45,59 @@ namespace MapControl
}
/// <summary>
/// Gets or sets a value that specifies how the map control handles manipulations.
/// Gets or sets a value that controls whether zooming by a MouseWheel event is animated.
/// The default value is true.
/// </summary>
public ManipulationModes ManipulationMode
public bool MouseWheelZoomAnimated
{
get => (ManipulationModes)GetValue(ManipulationModeProperty);
set => SetValue(ManipulationModeProperty, value);
get => (bool)GetValue(MouseWheelZoomAnimatedProperty);
set => SetValue(MouseWheelZoomAnimatedProperty, value);
}
protected override void OnManipulationStarted(ManipulationStartedEventArgs e)
protected override void OnMouseWheel(MouseWheelEventArgs e)
{
base.OnManipulationStarted(e);
var zoomLevel = TargetZoomLevel + MouseWheelZoomDelta * e.Delta / 120d;
var animated = false;
Manipulation.SetManipulationMode(this, ManipulationMode);
}
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;
}
protected override void OnManipulationDelta(ManipulationDeltaEventArgs e)
{
base.OnManipulationDelta(e);
ZoomMap(e.GetPosition(this), zoomLevel, animated);
TransformMap(e.ManipulationOrigin,
(Point)e.DeltaManipulation.Translation,
e.DeltaManipulation.Rotation,
e.DeltaManipulation.Scale.LengthSquared / 2d);
base.OnMouseWheel(e);
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonDown(e);
if (Keyboard.Modifiers == ModifierKeys.None &&
CaptureMouse())
{
mousePosition = e.GetPosition(this);
}
base.OnMouseLeftButtonDown(e);
}
protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonUp(e);
if (mousePosition.HasValue)
{
mousePosition = null;
ReleaseMouseCapture();
}
base.OnMouseLeftButtonUp(e);
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (mousePosition.HasValue)
{
var p = e.GetPosition(this);
@ -99,25 +112,25 @@ namespace MapControl
//
mousePosition = e.GetPosition(this);
}
base.OnMouseMove(e);
}
protected override void OnMouseWheel(MouseWheelEventArgs e)
protected override void OnManipulationStarted(ManipulationStartedEventArgs e)
{
base.OnMouseWheel(e);
Manipulation.SetManipulationMode(this, ManipulationMode);
// Standard mouse wheel delta value is 120.
//
mouseWheelDelta += e.Delta / 120d;
base.OnManipulationStarted(e);
}
if (Math.Abs(mouseWheelDelta) >= 1d)
{
// Zoom to integer multiple of MouseWheelZoomDelta.
//
ZoomMap(e.GetPosition(this),
MouseWheelZoomDelta * Math.Round(TargetZoomLevel / MouseWheelZoomDelta + mouseWheelDelta));
protected override void OnManipulationDelta(ManipulationDeltaEventArgs e)
{
TransformMap(e.ManipulationOrigin,
(Point)e.DeltaManipulation.Translation,
e.DeltaManipulation.Rotation,
e.DeltaManipulation.Scale.LengthSquared / 2d);
mouseWheelDelta = 0d;
}
base.OnManipulationDelta(e);
}
}
}