/// <summary>
/// Xử lý sự kiện Login
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnLogin_Click(object sender, RoutedEventArgs e)
{
if (Validation())
{
//Load image
BitmapImage bi = new BitmapImage();
bi.BeginInit();
bi.UriSource = new Uri(@"pack://application:,,,/Utilities.Common;component/Images/Other/M7_plant.gif", UriKind.RelativeOrAbsolute);
bi.EndInit();
LoadImageDelegate loadImageDelegate = new LoadImageDelegate(ImageBehavior.SetAnimatedSource);
Application.Current.Dispatcher.Invoke(loadImageDelegate, DispatcherPriority.Background, new object[] { imgWaiting, bi });
Login();
}
}
/// <summary>
/// 获取图片
/// </summary>
/// <param name="url"></param>
/// <param name="useCache">是否使用缓存</param>
/// <param name="error">错误原因</param>
/// <param name="loadImage">加载图片的方法</param>
/// <returns></returns>
public static Image GetImage(string url, bool useCache, out string error, LoadImageDelegate loadImage = null)
{
error = string.Empty;
try
{
if (!url.IsValid())
{
error = "无效的URL地址。";
return(null);
}
var lowerUrl = url.LowerCase();
if (useCache && Images.ContainsKey(lowerUrl))
{
return(Images[lowerUrl]);
}
Image image = null;
if (loadImage != null)
{
image = loadImage(url, out error);
}
else
{
image = LoadImage(url, out error);
}
if (image != null)
{
Images.AddOrUpdate(lowerUrl, image, (k, v) => v = image);
}
return(image);
}
catch (Exception ex)
{
error = ex.Message;
return(null);
}
}
/// <summary>
/// Handles LoadImage button event.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void LoadImageClickEventHandler(object sender, System.EventArgs e)
{
if (loadedImageFileDialog.ShowDialog() == DialogResult.OK)
{
//disables the load button.
loadImage.Enabled = false;
//sets the PogressBar to minimum.
loadedImageProgressBar.Value = loadedImageProgressBar.Minimum;
if (image.Image != null)
{
image.Image = null;
}
//loads the image.
LoadImageDelegate loadImageDelegate = new LoadImageDelegate(LoadImage);
loadImageDelegate.BeginInvoke(null, null);
}
}
//static IInstalledFontProvider s_fontProvider;
//public static void RegisterFontProvider(IInstalledFontProvider fontProvider)
//{
// s_fontProvider = fontProvider;
//}
public static void RegisterImageLoader(LoadImageDelegate loadImgDel)
{
s_LoadImgDel = loadImgDel;
}
///////////////////////////////////////////////////////////////
public void LoadImage(Image img)
{
if (isLogo)
{
return;
}
if (this.pbDisplay.InvokeRequired)
{
LoadImageDelegate d = new LoadImageDelegate(LoadImage);
this.Invoke(d, new object[] { img });
}
else
{
pbDisplay.Image = img;
}
//this.BeginInvoke(new LoadImageDelegate(LoadImage), new object[] { img });
//return;
//}
}
/// <summary>
/// 获取图片
/// </summary>
/// <param name="key"></param>
/// <param name="useCache">是否使用缓存</param>
/// <param name="error">错误原因</param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="loadImage">加载图片的方法</param>
/// <returns></returns>
private static Bitmap GetBitmap(string key, bool useCache, out string error, int?width, int?height, LoadImageDelegate loadImage = null)
{
try
{
var image = GetImage(key, useCache, out error, loadImage);
if (null == image)
{
return(null);
}
var bmp = new Bitmap(image);
if ((!width.HasValue || width.Value == bmp.Width) &&
(!height.HasValue || height.Value == bmp.Height))
{
return(bmp);
}
return(ResizeImage(bmp, width ?? bmp.Width, height ?? bmp.Height));
}
catch (Exception ex)
{
error = ex.Message;
return(null);
}
}
public static void SetLoadImageDelegate(LoadImageDelegate loadImg)
{
s_loadImg = loadImg;
}
