private void MergeTiles(FileInfo targetFile, XkcdTile topLeftTile, XkcdTile topRightTile, XkcdTile bottomLeftTile, XkcdTile bottomRightTile)
{
if (topLeftTile != null ||
topRightTile != null ||
bottomLeftTile != null ||
bottomRightTile != null)
{
Func <XkcdTile, Image> TileToImage = tile => new Image {
Source = XkcdTile.ToImageSource(tile)
};
var grid = new UniformGrid {
Rows = 2, Columns = 2
};
grid.Children.Add(TileToImage(topLeftTile));
grid.Children.Add(TileToImage(topRightTile));
grid.Children.Add(TileToImage(bottomLeftTile));
grid.Children.Add(TileToImage(bottomRightTile));
var viewBox = new Viewbox();
viewBox.Child = grid;
viewBox.Measure(new System.Windows.Size(XkcdTile.Width, XkcdTile.Height));
viewBox.Arrange(new Rect(new System.Windows.Size(XkcdTile.Width, XkcdTile.Height)));
var renderTarget = new RenderTargetBitmap(XkcdTile.Width, XkcdTile.Height, 96, 96, PixelFormats.Default);
renderTarget.Render(viewBox);
var frame = BitmapFrame.Create(renderTarget);
var encoder = new PngBitmapEncoder {
Frames = new[] { frame }
};
using (var fileStream = targetFile.Create())
{
encoder.Save(fileStream);
}
}
}
private void Refresh()
{
if (!_refreshing)
{
_refreshing = true;
var tileMap = this.TileMap;
var width = (int)this.ActualWidth;
var height = (int)this.ActualWidth;
var maxTop = tileMap.NbVertical * XkcdTile.Height - height;
if (this.Top < 0)
{
this.SetCurrentValue(XkcdMapControl.TopProperty, 0);
}
if (this.Top > maxTop)
{
this.SetCurrentValue(XkcdMapControl.TopProperty, maxTop);
}
var maxLeft = tileMap.NbHorizontal * XkcdTile.Width - width;
if (this.Left < 0)
{
this.SetCurrentValue(XkcdMapControl.LeftProperty, 0);
}
if (this.Left > maxLeft)
{
this.SetCurrentValue(XkcdMapControl.LeftProperty, maxLeft);
}
var top = this.Top;
var left = this.Left;
var yMin = top / XkcdTile.Height;
var yMax = (top + height) / XkcdTile.Height;
var xMin = left / XkcdTile.Width;
var xMax = (left + width) / XkcdTile.Width;
var points = (from x in Enumerable.Range(xMin, xMax - xMin + 1)
from y in Enumerable.Range(yMin, yMax - yMin + 1)
select new Point(x, y)).ToArray();
var reusedImages = (from point in points
select tileMap.GetTile(point) into tile
where tile != null
join image in _imageCouples on tile equals image.Tile
select image).ToList();
var freeImages = new Queue <TileImageCouple>(_imageCouples.Except(reusedImages));
foreach (var point in points)
{
var tile = tileMap.GetTile(point);
if (tile != null)
{
TileImageCouple imageCouple = reusedImages.FirstOrDefault(tic => tic.Tile == tile);
if (imageCouple == null)
{
imageCouple = freeImages.Dequeue();
imageCouple.Tile = tile;
imageCouple.Image.Source = XkcdTile.ToImageSource(tile);
}
Canvas.SetTop(imageCouple.Image, point.Y * XkcdTile.Height - top);
Canvas.SetLeft(imageCouple.Image, point.X * XkcdTile.Width - left);
imageCouple.Image.Visibility = Visibility.Visible;
var curIndex = _imageCouples.IndexOf(imageCouple);
_imageCouples[curIndex] = _imageCouples[0];
_imageCouples[0] = imageCouple;
}
}
foreach (var couple in freeImages)
{
couple.Image.Visibility = Visibility.Collapsed;
}
_refreshing = false;
}
}