/// <summary>
/// Method to load picture from disk.
/// </summary>
/// <param name="filename">The full path file name of the picture.</param>
/// <param name="width">The width of the image.</param>
/// <param name="isHttp">Is Http filename Url ?.</param>
/// <returns>A BitmapImage that contain the picture.</returns>
public static BitmapImage GetPicture(string filename, int width = 512, bool isHttp = false)
{
// Initialize bitmap image.
BitmapImage src = new BitmapImage();
// Try to create bitmap image from picture.
try
{
log.Debug($"{typeof(PictureMemoryCache).Name}.{MethodBase.GetCurrentMethod().Name} : Creating bitmap image from picture.");
if (string.IsNullOrWhiteSpace(filename))
{
ArgumentNullException e = new ArgumentNullException(nameof(filename));
log.Error(e.Output(), e);
return(src);
}
if (!Path.IsPathRooted(filename) && !isHttp)
{
filename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, filename);
}
if (!File.Exists(filename) && !isHttp)
{
FileNotFoundException e = new FileNotFoundException("File not found :", filename);
log.Error(e.Output(), e);
return(src);
}
log.Debug($"{typeof(PictureMemoryCache).Name}.{MethodBase.GetCurrentMethod().Name} : {filename}");
src.BeginInit();
src.CacheOption = BitmapCacheOption.OnLoad;
src.CreateOptions = BitmapCreateOptions.IgnoreImageCache | BitmapCreateOptions.PreservePixelFormat;
src.UriSource = new Uri(@filename, UriKind.Absolute);
src.DecodePixelWidth = width;
src.EndInit();
// Freeze picture if possible.
if (!src.IsFrozen && src.CanFreeze)
{
src.Freeze();
log.Debug($"{typeof(PictureMemoryCache).Name}.{MethodBase.GetCurrentMethod().Name} : Freezing Picture => done.");
}
}
// Catch create bitmap image fail.
// Just log error but generate no new exception.
catch (Exception e)
{
log.Error("PictureMemoryCache try to create bitmap image but operation failed !", e);
log.Error("filename : " + filename);
}
return(src);
}
