private void PopulateSelectedItemPanel(ImageInfo image)
{
mvPreview.SetActiveView(vwImagePreview);
ltName.Text = image.Name;
imgPreview.ImageUrl =
_imageStore.GetThumb(_groupKey, image.Id, new Size(previewMaxWidth, previewMaxHeight)).RelativePath;
imgOriginal.ImageUrl = image.RelativePath;
}
private string GetThumbPathRelative(ImageInfo image, Size maxSize)
{
return Path.Combine(
Path.Combine(_pathRelative, _pathThumbs),
string.Format("{0}_{1}x{2}px.{3}", image.HashCode, maxSize.Width, maxSize.Height,
image.UseJpeg ? "jpg" : "png"));
}
private void EnsureHashCode(ImageInfo info)
{
var imageKey = info.GroupKey != null ? info.GroupKey + info.Id : info.Name;
var key = _appDataKey + imageKey;
if (_appData[key] == null)
CalculateHashCode(info.AbsolutePath, imageKey);
info.HashCode = (int) (_appData[key] ?? 0);
}
private void EnsureThumb(ImageInfo original, ImageInfo thumb, Size maxSize)
{
if (thumb.HashCode == 0) return;
if (File.Exists(thumb.AbsolutePath)) return;
var sourcePath = original.AbsolutePath;
if (!File.Exists(sourcePath)) return;
using (var image = Image.FromFile(sourcePath))
using (var resized = image.Width <= maxSize.Width && image.Height <= maxSize.Height
? image
: maxSize.Width != 0
&& (maxSize.Height == 0
|| (double) image.Width/image.Height
>= (double) maxSize.Width/maxSize.Height)
? ImageUtils.ResizeImage(image, maxSize.Width, false)
: ImageUtils.ResizeImage(image, maxSize.Height, true))
resized.Save(thumb.AbsolutePath, thumb.UseJpeg ? ImageFormat.Jpeg : ImageFormat.Png);
}
public ImageInfo GetThumb(string groupKey, int id, Size maxSize)
{
var image = Get(groupKey, id);
if (image == null) return null;
EnsureHashCode(image);
var thumb = new ImageInfo
{
AbsolutePath = GetThumbPathAbsolute(image, maxSize),
RelativePath = GetThumbPathRelative(image, maxSize),
Name = image.Name,
GroupKey = image.GroupKey,
Id = image.Id,
HashCode = image.HashCode
};
EnsureThumb(image, thumb, maxSize);
return thumb;
}
