private void MapTile_MouseDown(object sender, MouseButtonEventArgs e)
{
Rectangle mapSquare = sender as Rectangle;
var row = Grid.GetRow(mapSquare);
var column = Grid.GetColumn(mapSquare);
var existingTile = ViewModel.Map.GetTileAt(ViewModel.CurrentLevel, row, column);
if (e.ChangedButton == MouseButton.Left && ViewModel.SelectedTile != null)
{
//if this tile already exists, update it. Otherwise, add
if (existingTile != null)
{
Tile newTile = ViewModel.SelectedTile.Clone();
//overlay the tile, so that transparency looks good
existingTile.Tile.LayTileOver(newTile);
}
else
{
var newTile = new MapTile(ViewModel.CurrentLevel, row, column, ViewModel.SelectedTile.Clone());
ViewModel.Map.MapTiles.Add(newTile);
AddMapTile(newTile);
}
}
if (e.ChangedButton == MouseButton.Right)
{
//remove the tile from the map
if (existingTile != null)
{
ViewModel.Map.MapTiles.Remove(existingTile);
}
//remove the child from the map referenced by the existing tile, not necessarily who handled the click event
UIElement toRemove = null;
foreach (UIElement element in MapGrid.Children)
{
var elementCast = element as Rectangle;
if (elementCast != null && elementCast.DataContext != null && elementCast.DataContext == existingTile)
{
toRemove = element;
break;
}
}
if (toRemove != null)
{
MapGrid.Children.Remove(toRemove);
}
}
}
private void AddMapTile(MapTile mapTile)
{
var toAdd = CreateMapTile(mapTile);
MapGrid.Children.Add(toAdd);
}
private Rectangle CreateMapTile(MapTile mapTile)
{
//create the rectangle
var toReturn = new Rectangle
{
Width = 50,
Height = 50,
StrokeThickness = .1,
Stroke = new SolidColorBrush(Colors.White),
SnapsToDevicePixels = true
};
RenderOptions.SetBitmapScalingMode(toReturn, BitmapScalingMode.NearestNeighbor);
toReturn.MouseDown += MapTile_MouseDown;
Grid.SetRow(toReturn, mapTile.Row);
Grid.SetColumn(toReturn, mapTile.Column);
Panel.SetZIndex(toReturn, mapTile.Level);
//create the data context
toReturn.DataContext = mapTile;
//create the binding for the fill, and bind to Tile.CurrentFrame.BitmapSource
var binding = new Binding("Tile.CurrentFrame.BitmapSource");
binding.Source = toReturn.DataContext;
var brush = new ImageBrush();
BindingOperations.SetBinding(brush, ImageBrush.ImageSourceProperty, binding);
toReturn.Fill = brush;
var visibilityBinding = new MultiBinding();
visibilityBinding.Converter = new MapTileVisibilityConverter();
visibilityBinding.Bindings.Add(new Binding("DisplayAllLevels") { Source = ViewModel });
visibilityBinding.Bindings.Add(new Binding("CurrentLevel") { Source = ViewModel });
visibilityBinding.Bindings.Add(new Binding("Level") { Source = toReturn.DataContext });
visibilityBinding.NotifyOnSourceUpdated = true;
toReturn.SetBinding(VisibilityProperty, visibilityBinding);
return toReturn;
}