ClemensFischer/XAML-Map-Control
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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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45
MapControl/WPF/Map.WPF.cs
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@ -23,16 +23,6 @@ namespace MapControl
IsManipulationEnabledProperty.OverrideMetadata(typeof(Map), new FrameworkPropertyMetadata(true));
}
public Map()
{
ManipulationStarted += OnManipulationStarted;
ManipulationDelta += OnManipulationDelta;
MouseLeftButtonDown += OnMouseLeftButtonDown;
MouseLeftButtonUp += OnMouseLeftButtonUp;
MouseMove += OnMouseMove;
MouseWheel += OnMouseWheel;
}
/// <summary>
/// Gets or sets the amount by which the ZoomLevel property changes by a MouseWheel event.
/// The default value is 0.25.
@ -52,29 +42,38 @@ namespace MapControl
set => SetValue(ManipulationModeProperty, value);
}
private void OnManipulationStarted(object sender, ManipulationStartedEventArgs e)
protected override void OnManipulationStarted(ManipulationStartedEventArgs e)
{
base.OnManipulationStarted(e);
Manipulation.SetManipulationMode(this, ManipulationMode);
}
private void OnManipulationDelta(object sender, ManipulationDeltaEventArgs e)
protected override void OnManipulationDelta(ManipulationDeltaEventArgs e)
{
base.OnManipulationDelta(e);
TransformMap(e.ManipulationOrigin,
(Point)e.DeltaManipulation.Translation,
e.DeltaManipulation.Rotation,
e.DeltaManipulation.Scale.LengthSquared / 2d);
}
private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (Keyboard.Modifiers == ModifierKeys.None && CaptureMouse())
base.OnMouseLeftButtonDown(e);
if (Keyboard.Modifiers == ModifierKeys.None &&
CaptureMouse())
{
mousePosition = e.GetPosition(this);
}
}
private void OnMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonUp(e);
if (mousePosition.HasValue)
{
mousePosition = null;
@ -82,18 +81,30 @@ namespace MapControl
}
}
private void OnMouseMove(object sender, MouseEventArgs e)
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (mousePosition.HasValue)
{
var p = e.GetPosition(this);
TranslateMap(new Point(p.X - mousePosition.Value.X, p.Y - mousePosition.Value.Y));
mousePosition = p;
}
else if (e.LeftButton == MouseButtonState.Pressed &&
Keyboard.Modifiers == ModifierKeys.None &&
CaptureMouse())
{
// Set mousePosition when no MouseLeftButtonDown event was received.
//
mousePosition = e.GetPosition(this);
}
}
private void OnMouseWheel(object sender, MouseWheelEventArgs e)
protected override void OnMouseWheel(MouseWheelEventArgs e)
{
base.OnMouseWheel(e);
// Standard mouse wheel delta value is 120.
//
mouseWheelDelta += e.Delta / 120d;

54
MapControl/WPF/MapItem.WPF.cs
View file

@ -18,17 +18,57 @@ namespace MapControl
DefaultStyleKeyProperty.OverrideMetadata(typeof(MapItem), new FrameworkPropertyMetadata(typeof(MapItem)));
}
protected override void OnTouchDown(TouchEventArgs e)
{
// Prevent default touch handling.
//
e.Handled = true;
}
protected override void OnTouchUp(TouchEventArgs e)
{
// Prevent default touch handling.
//
e.Handled = true;
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift))
// Prevent default item selection on mouse down.
//
e.Handled = true;
}
protected override void OnMouseRightButtonDown(MouseButtonEventArgs e)
{
// Prevent default item selection on mouse down.
//
e.Handled = true;
}
protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
{
if (ItemsControl.ItemsControlFromItemContainer(this) is MapItemsControl mapItemsControl)
{
e.Handled = true;
MapItemsControl.SelectItemsInRange(this);
}
else
{
base.OnMouseLeftButtonDown(e);
if (mapItemsControl.SelectionMode == SelectionMode.Extended &&
Keyboard.Modifiers.HasFlag(ModifierKeys.Shift))
{
mapItemsControl.SelectItemsInRange(this);
}
else
{
// Perform default mouse down item selection on mouse up.
//
base.OnMouseLeftButtonDown(e);
}
}
e.Handled = true;
}
protected override void OnMouseRightButtonUp(MouseButtonEventArgs e)
{
OnMouseLeftButtonUp(e);
}
}
}