public static void SetDrag(Map map, Point point, Point origin, Location mouseCenter)
{
MouseDragBehavior behavior = (Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift ?
map.MouseShiftDragMode : map.MouseDragMode;
switch (behavior)
{
case MouseDragBehavior.Drag:
{
ICoordinateService coordinateService = CoordinateServiceProvider.GetService(map);
Point pixelCenter = coordinateService.LogicalToPixel(map.SpatialReference.GeographicToLogical(mouseCenter));
pixelCenter.X += origin.X - point.X;
pixelCenter.Y += origin.Y - point.Y;
Point offset = map.MultiScaleImage.ViewportOrigin;
Size viewLogicalSize = new Size(map.MultiScaleImage.ViewportWidth,
map.MultiScaleImage.ViewportWidth * map.MultiScaleImage.ActualHeight / map.MultiScaleImage.ActualWidth);
double pixelFactorX = viewLogicalSize.Width / map.MultiScaleImage.ActualWidth;
double pixelFactorY = viewLogicalSize.Height / map.MultiScaleImage.ActualHeight;
Point logical = new Point((pixelCenter.X * pixelFactorX) + offset.X, (pixelCenter.Y * pixelFactorY) + offset.Y);
map.Center = coordinateService.LogicalToGeographic(logical);
}
break;
case MouseDragBehavior.Select:
{
map.MouseControl.SelectBoxLocation = new Point(Math.Min(origin.X, point.X), Math.Min(origin.Y, point.Y));
var newSize = new Size(Math.Abs(origin.X - point.X), Math.Abs(origin.Y - point.Y));
map.MouseControl.SelectBoxSize = newSize;
}
break;
}
}
public static void SetZoomToPoint(Map map, Point point, int zoomAdjustment)
{
ICoordinateService coordinateService = CoordinateServiceProvider.GetService(map);
Point center = map.SpatialReference.GeographicToLogical(map.Center);
Location newCenter = map.Center;
IMapSource mode = map.Provider.CurrentSource;
Point sourceLogical = coordinateService.PixelToLogical(point);
Location sourcePoint = coordinateService.PixelToGeographic(point);
map.ZoomLevel += zoomAdjustment;
Point currentLogical = coordinateService.PixelToLogical(point);
Location currentPoint = coordinateService.PixelToGeographic(point);
if (mode == map.Provider.CurrentSource)
{
Point shift = new Point(sourceLogical.X - currentLogical.X, sourceLogical.Y - currentLogical.Y);
center.X += shift.X;
center.Y += shift.Y;
newCenter = map.SpatialReference.LogicalToGeographic(center);
}
else
{
if (map.Center.Longitude < sourcePoint.Longitude)
{
newCenter.Longitude = map.Center.Longitude + sourcePoint.Longitude - currentPoint.Longitude;
}
else
{
newCenter.Longitude = map.Center.Longitude - currentPoint.Longitude + sourcePoint.Longitude;
}
if (map.Center.Latitude < sourcePoint.Latitude)
{
newCenter.Latitude = map.Center.Latitude + sourcePoint.Latitude - currentPoint.Latitude;
}
else
{
newCenter.Latitude = map.Center.Latitude - currentPoint.Latitude + sourcePoint.Latitude;
}
}
map.Center = newCenter;
}
/// <summary>
/// Arrange item in canvas.
/// </summary>
/// <param name="item">Item to arrange.</param>
internal void ArrangeItem(UIElement element)
{
MapCanvasItem item = null;
this.internalItems.TryGetValue(element.GetHashCode(), out item);
if (item != null)
{
Location location = MapLayer.GetLocation(element);
if (location.IsEmpty)
{
return;
}
ICoordinateService coordinateService = CoordinateServiceProvider.GetService(this.Map);
Point pixel = coordinateService.GeographicToPixel(location);
this.SetItemPosition(item, pixel);
}
}
