ClemensFischer/XAML-Map-Control
1
0
Fork 0
mirror of https://github.com/ClemensFischer/XAML-Map-Control.git synced 2026-04-04 14:08:32 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Version 4: Upgrade to VS 2017

Browse source
This commit is contained in:
ClemensF 2017-08-04 21:38:58 +02:00
parent 2aafe32e00
commit ec47f225b3
142 changed files with 1828 additions and 18384 deletions
Download patch file Download diff file Expand all files Collapse all files

208
MapControl/UWP/MapGraticule.UWP.cs Normal file
View file

@ -0,0 +1,208 @@
// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
// © 2017 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)
using System;
using Windows.Foundation;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Shapes;
using Windows.UI.Xaml.Data;
namespace MapControl
{
public partial class MapGraticule
{
private Path path;
private Location graticuleStart;
private Location graticuleEnd;
public MapGraticule()
{
IsHitTestVisible = false;
StrokeThickness = 0.5;
}
protected override void OnViewportChanged(ViewportChangedEventArgs e)
{
var projection = ParentMap.MapProjection;
if (!double.IsNaN(projection.LongitudeScale))
{
if (path == null)
{
path = new Path
{
Data = new PathGeometry()
};
path.SetBinding(Shape.StrokeProperty,
GetBindingExpression(StrokeProperty)?.ParentBinding ??
new Binding
{
Source = this,
Path = new PropertyPath("Stroke")
});
path.SetBinding(Shape.StrokeThicknessProperty,
GetBindingExpression(StrokeThicknessProperty)?.ParentBinding ??
new Binding
{
Source = this,
Path = new PropertyPath("StrokeThickness")
});
Children.Add(path);
}
var bounds = projection.ViewportRectToBoundingBox(new Rect(0d, 0d, ParentMap.RenderSize.Width, ParentMap.RenderSize.Height));
var lineDistance = GetLineDistance();
var labelStart = new Location(
Math.Ceiling(bounds.South / lineDistance) * lineDistance,
Math.Ceiling(bounds.West / lineDistance) * lineDistance);
var labelEnd = new Location(
Math.Floor(bounds.North / lineDistance) * lineDistance,
Math.Floor(bounds.East / lineDistance) * lineDistance);
var lineStart = new Location(
Math.Min(Math.Max(labelStart.Latitude - lineDistance, -projection.MaxLatitude), projection.MaxLatitude),
labelStart.Longitude - lineDistance);
var lineEnd = new Location(
Math.Min(Math.Max(labelEnd.Latitude + lineDistance, -projection.MaxLatitude), projection.MaxLatitude),
labelEnd.Longitude + lineDistance);
if (!lineStart.Equals(graticuleStart) || !lineEnd.Equals(graticuleEnd))
{
graticuleStart = lineStart;
graticuleEnd = lineEnd;
var geometry = (PathGeometry)path.Data;
geometry.Figures.Clear();
geometry.Transform = projection.ViewportTransform;
for (var lat = labelStart.Latitude; lat <= bounds.North; lat += lineDistance)
{
var figure = new PathFigure
{
StartPoint = projection.LocationToPoint(new Location(lat, lineStart.Longitude)),
IsClosed = false,
IsFilled = false
};
figure.Segments.Add(new LineSegment
{
Point = projection.LocationToPoint(new Location(lat, lineEnd.Longitude)),
});
geometry.Figures.Add(figure);
}
for (var lon = labelStart.Longitude; lon <= bounds.East; lon += lineDistance)
{
var figure = new PathFigure
{
StartPoint = projection.LocationToPoint(new Location(lineStart.Latitude, lon)),
IsClosed = false,
IsFilled = false
};
figure.Segments.Add(new LineSegment
{
Point = projection.LocationToPoint(new Location(lineEnd.Latitude, lon)),
});
geometry.Figures.Add(figure);
}
var labelFormat = GetLabelFormat(lineDistance);
var childIndex = 1; // 0 for Path
for (var lat = labelStart.Latitude; lat <= bounds.North; lat += lineDistance)
{
for (var lon = labelStart.Longitude; lon <= bounds.East; lon += lineDistance)
{
TextBlock label;
if (childIndex < Children.Count)
{
label = (TextBlock)Children[childIndex];
}
else
{
var renderTransform = new TransformGroup();
renderTransform.Children.Add(new TranslateTransform());
renderTransform.Children.Add(ParentMap.RotateTransform);
renderTransform.Children.Add(new TranslateTransform());
label = new TextBlock
{
RenderTransform = renderTransform
};
label.SetBinding(TextBlock.ForegroundProperty,
GetBindingExpression(ForegroundProperty)?.ParentBinding ??
new Binding
{
Source = this,
Path = new PropertyPath("Foreground")
});
Children.Add(label);
}
childIndex++;
if (FontFamily != null)
{
label.FontFamily = FontFamily;
}
label.FontSize = FontSize;
label.FontStyle = FontStyle;
label.FontStretch = FontStretch;
label.FontWeight = FontWeight;
label.Text = GetLabelText(lat, labelFormat, "NS") + "\n" + GetLabelText(Location.NormalizeLongitude(lon), labelFormat, "EW");
label.Tag = new Location(lat, lon);
label.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
var translateTransform = (TranslateTransform)((TransformGroup)label.RenderTransform).Children[0];
translateTransform.X = StrokeThickness / 2d + 2d;
translateTransform.Y = -label.DesiredSize.Height / 2d;
}
}
while (Children.Count > childIndex)
{
Children.RemoveAt(Children.Count - 1);
}
}
// don't use MapPanel.Location because labels may be at more than 180° distance from map center
for (int i = 1; i < Children.Count; i++)
{
var label = (TextBlock)Children[i];
var location = (Location)label.Tag;
var viewportTransform = (TranslateTransform)((TransformGroup)label.RenderTransform).Children[2];
var viewportPosition = projection.LocationToViewportPoint(location);
viewportTransform.X = viewportPosition.X;
viewportTransform.Y = viewportPosition.Y;
}
}
else if (path != null)
{
path = null;
graticuleStart = null;
graticuleEnd = null;
Children.Clear();
}
base.OnViewportChanged(e);
}
}
}