public void InvokeHover(Point screenPosition, float scale, ISymbolCache symbolCache)
{
if (Hover == null)
{
return;
}
if (HoverLayers.Count == 0)
{
return;
}
var mapInfo = InfoHelper.GetMapInfo(Viewport, screenPosition, scale, HoverLayers, symbolCache);
if (mapInfo?.Feature != _previousHoverEventArgs?.MapInfo.Feature) // only notify when the feature changes
{
var mapInfoEventArgs = new MapInfoEventArgs
{
MapInfo = mapInfo,
NumTaps = 0,
Handled = false
};
_previousHoverEventArgs = mapInfoEventArgs;
Hover?.Invoke(this, mapInfoEventArgs);
}
}
public void IgnoringDisabledLayers()
{
// arrange
var map = new Map();
map.Viewport.Resolution = 1;
map.Viewport.Width = 10;
map.Viewport.Height = 10;
map.Viewport.Center = new Point(5, 5);
var disabledLayer = new MemoryLayer
{
Name = "TestLayer",
DataSource = new MemoryProvider(CreatePolygon(1, 3)),
Enabled = false
};
map.Layers.Add(disabledLayer);
map.InfoLayers.Add(disabledLayer);
var screenPositionHit = map.Viewport.WorldToScreen(2, 2);
// act
var argsHit = InfoHelper.GetMapInfo(map.Viewport, screenPositionHit, map.InfoLayers, null);
// assert;
Assert.IsTrue(argsHit.Feature == null);
Assert.IsTrue(argsHit.Layer == null);
Assert.IsTrue(argsHit.WorldPosition.Equals(new Point(2, 2)));
}
/// <summary>
/// Check, if a widget or feature at a given screen position is clicked/tapped
/// </summary>
/// <param name="screenPosition">Screen position to check for widgets and features</param>
/// <param name="startScreenPosition">Screen position of Viewport/MapControl</param>
/// <param name="scale">Scale of scrren. Normally is 1, but could be greater.</param>
/// <param name="symbolCache">Cache for symbols to determin size</param>
/// <param name="widgetCallback">Callback, which is called when Widget is hiten</param>
/// <param name="numTaps">Number of clickes/taps</param>
/// <returns>True, if something done </returns>
public bool InvokeInfo(Point screenPosition, Point startScreenPosition, float scale, ISymbolCache symbolCache,
Action <IWidget, Point> widgetCallback, int numTaps)
{
var layerWidgets = Layers.Select(l => l.Attribution).Where(a => a != null);
var allWidgets = layerWidgets.Concat(Widgets).ToList(); // Concat layer widgets and map widgets.
// First check if a Widget is clicked. In the current design they are always on top of the map.
var widget = WidgetTouch.GetWidget(screenPosition, startScreenPosition, scale, allWidgets);
if (widget != null)
{
// TODO how should widgetCallback have a handled type thing?
// Widgets should be iterated through rather than getting a single widget,
// based on Z index and then called until handled = true; Ordered By highest Z
widgetCallback(widget, new Point(screenPosition.X / scale, screenPosition.Y / scale));
return(true);
}
if (Info == null)
{
return(false);
}
var mapInfo = InfoHelper.GetMapInfo(Viewport, screenPosition, scale, InfoLayers, symbolCache);
if (mapInfo != null)
{
// TODO Info items should be iterated through rather than getting a single item,
// based on Z index and then called until handled = true; Ordered By highest Z
var mapInfoEventArgs = new MapInfoEventArgs
{
MapInfo = mapInfo,
NumTaps = numTaps,
Handled = false
};
Info?.Invoke(this, mapInfoEventArgs);
return(mapInfoEventArgs.Handled);
}
return(false);
}
public void IgnoringLayersOutOfScaleRange()
{
// arrange
var map = new Map();
map.Viewport.Resolution = 1;
map.Viewport.Width = 10;
map.Viewport.Height = 10;
map.Viewport.Center = new Point(5, 5);
var layerBelowRange = new MemoryLayer
{
Name = "MaxVisibleLayer",
DataSource = new MemoryProvider(CreatePolygon(1, 3)),
MaxVisible = 0.9
};
var layerAboveRange = new MemoryLayer
{
Name = "MinVisibleLayer",
DataSource = new MemoryProvider(CreatePolygon(1, 3)),
MinVisible = 1.1
};
map.Layers.Add(layerBelowRange);
map.Layers.Add(layerAboveRange);
map.InfoLayers.Add(layerBelowRange);
map.InfoLayers.Add(layerAboveRange);
var screenPositionHit = map.Viewport.WorldToScreen(2, 2);
var scale = 1;
// act
var argsHit = InfoHelper.GetMapInfo(map.Viewport, screenPositionHit, scale, map.InfoLayers, null);
// assert;
Assert.IsTrue(argsHit.Feature == null);
Assert.IsTrue(argsHit.Layer == null);
Assert.IsTrue(argsHit.WorldPosition.Equals(new Point(2, 2)));
}
public void TestInfo()
{
// arrange
var map = new Map();
map.Viewport.Resolution = 1;
map.Viewport.Width = 10;
map.Viewport.Height = 10;
map.Viewport.Center = new Point(5, 5);
var layer = new MemoryLayer
{
Name = "TestLayer",
DataSource = new MemoryProvider(CreatePolygon(1, 4))
};
map.Layers.Add(layer);
map.InfoLayers.Add(layer);
var screenPositionHit = map.Viewport.WorldToScreen(2, 2);
var screenPositionMiss = map.Viewport.WorldToScreen(9, 9);
var scale = 1;
// act
var argsHit = InfoHelper.GetMapInfo(map.Viewport, screenPositionHit, scale, map.InfoLayers, null);
var argsMis = InfoHelper.GetMapInfo(map.Viewport, screenPositionMiss, scale, map.InfoLayers, null);
// assert;
Assert.IsTrue(argsHit.Feature.Geometry != null);
Assert.IsTrue(argsHit.Layer.Name == "TestLayer");
Assert.IsTrue(argsHit.WorldPosition.Equals(new Point(2, 2)));
// If not on feature still return args with world position.
Assert.IsTrue(argsMis.Feature?.Geometry == null);
Assert.IsTrue(argsMis.Layer == null);
Assert.IsTrue(argsMis.WorldPosition.Equals(new Point(9, 9)));
}