ClemensFischer/XAML-Map-Control
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ClemensFischer 2026-04-13 17:14:49 +02:00
parent c14377f976
commit 65aba44af6
152 changed files with 11962 additions and 12115 deletions
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125
MapControl/Shared/MapBorderPanel.cs
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@ -8,84 +8,83 @@ using Microsoft.UI.Xaml;
using Avalonia;
#endif
namespace MapControl
namespace MapControl;
/// <summary>
/// A MapPanel that adjusts the ViewPosition property of its child elements so that
/// elements that would be outside the current viewport are arranged on a border area.
/// Such elements are arranged at a distance of BorderWidth/2 from the edges of the
/// MapBorderPanel in direction of their original azimuth from the map center.
/// </summary>
public partial class MapBorderPanel : MapPanel
{
/// <summary>
/// A MapPanel that adjusts the ViewPosition property of its child elements so that
/// elements that would be outside the current viewport are arranged on a border area.
/// Such elements are arranged at a distance of BorderWidth/2 from the edges of the
/// MapBorderPanel in direction of their original azimuth from the map center.
/// </summary>
public partial class MapBorderPanel : MapPanel
public static readonly DependencyProperty BorderWidthProperty =
DependencyPropertyHelper.Register<MapBorderPanel, double>(nameof(BorderWidth));
public static readonly DependencyProperty OnBorderProperty =
DependencyPropertyHelper.RegisterAttached<bool>("OnBorder", typeof(MapBorderPanel));
public double BorderWidth
{
public static readonly DependencyProperty BorderWidthProperty =
DependencyPropertyHelper.Register<MapBorderPanel, double>(nameof(BorderWidth));
get => (double)GetValue(BorderWidthProperty);
set => SetValue(BorderWidthProperty, value);
}
public static readonly DependencyProperty OnBorderProperty =
DependencyPropertyHelper.RegisterAttached<bool>("OnBorder", typeof(MapBorderPanel));
public static bool GetOnBorder(FrameworkElement element)
{
return (bool)element.GetValue(OnBorderProperty);
}
public double BorderWidth
protected override Point SetViewPosition(FrameworkElement element, Point position)
{
var onBorder = false;
var w = ParentMap.ActualWidth;
var h = ParentMap.ActualHeight;
var minX = BorderWidth / 2d;
var minY = BorderWidth / 2d;
var maxX = w - BorderWidth / 2d;
var maxY = h - BorderWidth / 2d;
if (position.X < minX || position.X > maxX ||
position.Y < minY || position.Y > maxY)
{
get => (double)GetValue(BorderWidthProperty);
set => SetValue(BorderWidthProperty, value);
}
var dx = position.X - w / 2d;
var dy = position.Y - h / 2d;
var cx = (maxX - minX) / 2d;
var cy = (maxY - minY) / 2d;
double x, y;
public static bool GetOnBorder(FrameworkElement element)
{
return (bool)element.GetValue(OnBorderProperty);
}
protected override Point SetViewPosition(FrameworkElement element, Point position)
{
var onBorder = false;
var w = ParentMap.ActualWidth;
var h = ParentMap.ActualHeight;
var minX = BorderWidth / 2d;
var minY = BorderWidth / 2d;
var maxX = w - BorderWidth / 2d;
var maxY = h - BorderWidth / 2d;
if (position.X < minX || position.X > maxX ||
position.Y < minY || position.Y > maxY)
if (dx < 0d)
{
var dx = position.X - w / 2d;
var dy = position.Y - h / 2d;
var cx = (maxX - minX) / 2d;
var cy = (maxY - minY) / 2d;
double x, y;
x = minX;
y = minY + cy - cx * dy / dx;
}
else
{
x = maxX;
y = minY + cy + cx * dy / dx;
}
if (dx < 0d)
if (y < minY || y > maxY)
{
if (dy < 0d)
{
x = minX;
y = minY + cy - cx * dy / dx;
x = minX + cx - cy * dx / dy;
y = minY;
}
else
{
x = maxX;
y = minY + cy + cx * dy / dx;
x = minX + cx + cy * dx / dy;
y = maxY;
}
if (y < minY || y > maxY)
{
if (dy < 0d)
{
x = minX + cx - cy * dx / dy;
y = minY;
}
else
{
x = minX + cx + cy * dx / dy;
y = maxY;
}
}
position = new Point(x, y);
onBorder = true;
}
element.SetValue(OnBorderProperty, onBorder);
return base.SetViewPosition(element, position);
position = new Point(x, y);
onBorder = true;
}
element.SetValue(OnBorderProperty, onBorder);
return base.SetViewPosition(element, position);
}
}