ClemensFischer/XAML-Map-Control
1
0
Fork 0
mirror of https://github.com/ClemensFischer/XAML-Map-Control.git synced 2025-12-06 07:12:04 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Avalonia Map.ManipulationModes

Browse source
This commit is contained in:
ClemensFischer 2024-05-28 22:16:29 +02:00
parent 24b2165d0a
commit fc4139c739
3 changed files with 99 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

117
MapControl/Avalonia/Map.Avalonia.cs
View file

@ -6,11 +6,24 @@ using System;
namespace MapControl
{
[Flags]
public enum ManipulationModes
{
None = 0,
Translate = 1,
Rotate = 2,
Scale = 4,
All = Translate | Rotate | Scale
}
/// <summary>
/// MapBase with default input event handling.
/// </summary>
public class Map : MapBase
{
public static readonly StyledProperty<ManipulationModes> ManipulationModesProperty =
DependencyPropertyHelper.Register<Map, ManipulationModes>(nameof(ManipulationModes), ManipulationModes.Translate | ManipulationModes.Scale);
public static readonly StyledProperty<double> MouseWheelZoomDeltaProperty =
DependencyPropertyHelper.Register<Map, double>(nameof(MouseWheelZoomDelta), 0.25);
@ -19,6 +32,12 @@ namespace MapControl
private Point position1;
private Point position2;
public ManipulationModes ManipulationModes
{
get => GetValue(ManipulationModesProperty);
set => SetValue(ManipulationModesProperty, value);
}
/// <summary>
/// Gets or sets the amount by which the ZoomLevel property changes by a MouseWheel event.
/// The default value is 0.25.
@ -38,15 +57,25 @@ namespace MapControl
base.OnPointerWheelChanged(e);
}
protected override void OnPointerPressed(PointerPressedEventArgs e)
private bool HandleMousePressed(PointerPoint point)
{
var point = e.GetCurrentPoint(this);
if (pointer2 == null &&
(point.Properties.IsLeftButtonPressed || point.Pointer.Type == PointerType.Touch))
var handled = pointer1 == null && point.Properties.IsLeftButtonPressed;
if (handled)
{
point.Pointer.Capture(this);
pointer1 = point.Pointer;
position1 = point.Position;
}
return handled;
}
private bool HandleTouchPressed(PointerPoint point)
{
var handled = pointer2 == null && ManipulationModes != ManipulationModes.None;
if (handled)
{
if (pointer1 == null)
{
pointer1 = point.Pointer;
@ -57,6 +86,19 @@ namespace MapControl
pointer2 = point.Pointer;
position2 = point.Position;
}
}
return handled;
}
protected override void OnPointerPressed(PointerPressedEventArgs e)
{
var point = e.GetCurrentPoint(this);
if (point.Pointer.Type == PointerType.Mouse && HandleMousePressed(point) ||
point.Pointer.Type == PointerType.Touch && HandleTouchPressed(point))
{
point.Pointer.Capture(this);
e.Handled = true;
}
@ -84,21 +126,34 @@ namespace MapControl
base.OnPointerReleased(e);
}
protected override void OnPointerCaptureLost(PointerCaptureLostEventArgs e)
{
if (e.Pointer == pointer1 || e.Pointer == pointer2)
{
if (e.Pointer == pointer1)
{
pointer1 = pointer2;
position1 = position2;
}
pointer2 = null;
e.Handled = true;
}
base.OnPointerCaptureLost(e);
}
protected override void OnPointerMoved(PointerEventArgs e)
{
if (e.Pointer == pointer1 || e.Pointer == pointer2)
{
var position = e.GetPosition(this);
if (pointer2 == null)
if (pointer2 != null)
{
TranslateMap(position - position1);
position1 = position;
}
else
{
Point oldOrigin = new((position1.X + position2.X) / 2d, (position1.Y + position2.Y) / 2d);
Vector oldDistance = position2 - position1;
var oldDistance = new Vector(position2.X - position1.X, position2.Y - position1.Y);
var oldOrigin = new Point((position1.X + position2.X) / 2d, (position1.Y + position2.Y) / 2d);
if (e.Pointer == pointer1)
{
@ -109,14 +164,36 @@ namespace MapControl
position2 = position;
}
Point newOrigin = new((position1.X + position2.X) / 2d, (position1.Y + position2.Y) / 2d);
Vector newDistance = position2 - position1;
var newDistance = new Vector(position2.X - position1.X, position2.Y - position1.Y);
var newOrigin = oldOrigin;
var translation = new Point();
var rotation = 0d;
var scale = 1d;
var oldAngle = Math.Atan2(oldDistance.Y, oldDistance.X) * 180d / Math.PI;
var newAngle = Math.Atan2(newDistance.Y, newDistance.X) * 180d / Math.PI;
var scale = newDistance.Length / oldDistance.Length;
if (ManipulationModes.HasFlag(ManipulationModes.Translate))
{
newOrigin = new Point((position1.X + position2.X) / 2d, (position1.Y + position2.Y) / 2d);
translation = newOrigin - oldOrigin;
}
TransformMap(newOrigin, newOrigin - oldOrigin, newAngle - oldAngle, scale);
if (ManipulationModes.HasFlag(ManipulationModes.Rotate))
{
rotation = 180d / Math.PI
* (Math.Atan2(newDistance.Y, newDistance.X) - Math.Atan2(oldDistance.Y, oldDistance.X));
}
if (ManipulationModes.HasFlag(ManipulationModes.Scale))
{
scale = newDistance.Length / oldDistance.Length;
}
TransformMap(newOrigin, translation, rotation, scale);
}
else if (e.Pointer.Type != PointerType.Touch || ManipulationModes.HasFlag(ManipulationModes.Translate))
{
TranslateMap(position - position1);
position1 = position;
}
e.Handled = true;

2
MapControl/WPF/Map.WPF.cs
View file

@ -17,7 +17,7 @@ namespace MapControl
DependencyPropertyHelper.Register<Map, double>(nameof(MouseWheelZoomDelta), 0.25);
public static readonly DependencyProperty ManipulationModeProperty =
DependencyPropertyHelper.Register<Map, ManipulationModes>(nameof(ManipulationMode), ManipulationModes.Scale | ManipulationModes.Translate);
DependencyPropertyHelper.Register<Map, ManipulationModes>(nameof(ManipulationMode), ManipulationModes.Translate | ManipulationModes.Scale);
private Point? mousePosition;
private double mouseWheelDelta;

1
SampleApps/AvaloniaApp/MainWindow.axaml
View file

@ -13,6 +13,7 @@
<map:Map x:Name="map"
ZoomLevel="11" MinZoomLevel="3"
Center="53.5,8.2"
ManipulationModes="All"
DoubleTapped="OnMapDoubleTapped">
<map:MapItemsControl ItemsSource="{Binding Pushpins}" SelectionMode="Multiple">