private void PrepareImages()
{
_rows.Clear();
_items.Clear();
_layoutRoot.Children.Clear();
if (Source == null)
return;
foreach (var bitmapImage in Source)
{
var image = new Image();
image.Stretch = Stretch.UniformToFill;
image.Source = bitmapImage;
var item = new MosaicItem1(image, new Size(bitmapImage.PixelWidth, bitmapImage.PixelHeight));
_items.Add(item);
_layoutRoot.Children.Add(image);
}
}
private void PlaceItem(MosaicItem1 item, Rect targetRect)
{
item.ComputedLocation = new Point(targetRect.X, targetRect.Y);
Canvas.SetLeft(item.Image, targetRect.X);
Canvas.SetTop(item.Image, targetRect.Y);
}
private void FitToRow(MosaicItem1 item, double rowHeight)
{
var scale = rowHeight / item.ComputedSize.Height;
item.Image.Width *= scale;
item.Image.Height *= scale;
item.ComputedSize = new Size(item.Image.Width, item.Image.Height);
}
private void MeasureItem(MosaicItem1 item)
{
if (item.OriginalSize.Width > MaxImageSize || item.OriginalSize.Height > MaxImageSize)
{
var scale = MaxImageSize / (item.OriginalSize.Width > item.OriginalSize.Height ? item.OriginalSize.Width : item.OriginalSize.Height);
item.Image.Width = item.OriginalSize.Width * scale;
item.Image.Height = item.OriginalSize.Height * scale;
}
else
{
item.Image.Width = item.OriginalSize.Width;
item.Image.Height = item.OriginalSize.Height;
}
item.ComputedSize = new Size(item.Image.Width, item.Image.Height);
}
private Rect ComputeItemLocation(MosaicItem1 item, Rect targetRect)
{
return new Rect(targetRect.X, targetRect.Y, item.ComputedSize.Width, item.ComputedSize.Height);
}