protected override void OnImageLoad(HtmlImageLoadEventArgs e)
{
byte[] imageContent;
if (ChapterContent.Images.TryGetValue(e.Src, out imageContent))
{
using (MemoryStream imageStream = new MemoryStream(imageContent))
{
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.StreamSource = imageStream;
bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
bitmapImage.EndInit();
bitmapImage.Freeze();
e.Callback(bitmapImage);
}
e.Handled = true;
}
base.OnImageLoad(e);
}
/// <summary>
/// This callback is invoked when a remote image is requested. These are identified by image: prefixes on the img
/// tag source and are assumed to be http based. We request the image from the ImageRequestorTask in CIXClient and
/// provide a callback to be invoked when the image is retrieved.
/// </summary>
private void LabelOnImageLoad(object sender, HtmlImageLoadEventArgs htmlImageLoadEventArgs)
{
string realUrl = htmlImageLoadEventArgs.Src;
if (realUrl.StartsWith("image:", StringComparison.Ordinal))
{
realUrl = "http://" + realUrl.Substring(6);
Image image = CIX.ImageRequestorTask.NewRequest(realUrl, Control.MaximumSize.Width/3, MaxHeight, ImageRetrieved, htmlImageLoadEventArgs);
if (image != null)
{
htmlImageLoadEventArgs.Callback(image);
}
}
else if (realUrl.StartsWith("images:", StringComparison.Ordinal))
{
realUrl = "https://" + realUrl.Substring(7);
Image image = CIX.ImageRequestorTask.NewRequest(realUrl, Control.MaximumSize.Width / 3, MaxHeight, ImageRetrieved, htmlImageLoadEventArgs);
if (image != null)
{
htmlImageLoadEventArgs.Callback(image);
}
}
}
private void OnImageLoad(object sender, HtmlImageLoadEventArgs e)
{
OnImageLoad(e);
}
/// <summary>
/// Propagate the image load event from root container.
/// </summary>
protected virtual void OnImageLoad(HtmlImageLoadEventArgs e)
{
var handler = ImageLoad;
if (handler != null)
handler(this, e);
}
/// <summary>
/// On image load in renderer set the image by event async.
/// </summary>
public static void ImageLoad(HtmlImageLoadEventArgs e)
{
var img = TryLoadResourceImage(e.Src);
if (!e.Handled && e.Attributes != null)
{
if (e.Attributes.ContainsKey("byevent"))
{
int delay;
if (Int32.TryParse(e.Attributes["byevent"], out delay))
{
e.Handled = true;
ThreadPool.QueueUserWorkItem(state =>
{
Thread.Sleep(delay);
e.Callback("https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-snc7/c0.44.403.403/p403x403/318890_10151195988833836_1081776452_n.jpg");
});
return;
}
else
{
e.Callback("http://sphotos-a.xx.fbcdn.net/hphotos-ash4/c22.0.403.403/p403x403/263440_10152243591765596_773620816_n.jpg");
return;
}
}
else if (e.Attributes.ContainsKey("byrect"))
{
var split = e.Attributes["byrect"].Split(',');
var rect = new Rect(Int32.Parse(split[0]), Int32.Parse(split[1]), Int32.Parse(split[2]), Int32.Parse(split[3]));
e.Callback(img ?? TryLoadResourceImage("htmlicon"), rect.X, rect.Y, rect.Width, rect.Height);
return;
}
}
if (img != null)
e.Callback(img);
}
/// <summary>
/// On image load in renderer set the image by event async.
/// </summary>
public static void OnImageLoad(object sender, HtmlImageLoadEventArgs args)
{
ImageLoad(args);
}
/// <summary>
/// Raise the image load event with the given event args.
/// </summary>
/// <param name="args">the event args</param>
internal void RaiseHtmlImageLoadEvent(HtmlImageLoadEventArgs args)
{
try
{
EventHandler<HtmlImageLoadEventArgs> handler = ImageLoad;
if (handler != null)
handler(this, args);
}
catch (Exception ex)
{
ReportError(HtmlRenderErrorType.Image, "Failed image load event", ex);
}
}
/// <summary>
/// Set image of this image box by analyzing the src attribute.<br/>
/// Load the image from inline base64 encoded string.<br/>
/// Or from calling property/method on the bridge object that returns image or URL to image.<br/>
/// Or from file path<br/>
/// Or from URI.
/// </summary>
/// <remarks>
/// File path and URI image loading is executed async and after finishing calling <see cref="ImageLoadComplete"/>
/// on the main thread and not thread-pool.
/// </remarks>
/// <param name="src">the source of the image to load</param>
/// <param name="attributes">the collection of attributes on the element to use in event</param>
/// <returns>the image object (null if failed)</returns>
public void LoadImage(string src, Dictionary<string, string> attributes)
{
try
{
var args = new HtmlImageLoadEventArgs(src, attributes, OnHtmlImageLoadEventCallback);
_htmlContainer.RaiseHtmlImageLoadEvent(args);
_asyncCallback = !_htmlContainer.AvoidAsyncImagesLoading;
if (!args.Handled)
{
if (!string.IsNullOrEmpty(src))
{
if (src.StartsWith("data:image", StringComparison.CurrentCultureIgnoreCase))
{
SetFromInlineData(src);
}
else
{
SetImageFromPath(src);
}
}
else
{
ImageLoadComplete(false);
}
}
}
catch (Exception ex)
{
_htmlContainer.ReportError(HtmlRenderErrorType.Image, "Exception in handling image source", ex);
ImageLoadComplete(false);
}
}
/// <summary>
/// On image load in renderer set the image by event async.
/// </summary>
public static void OnImageLoadPdfSharp(object sender, HtmlImageLoadEventArgs e)
{
ImageLoad(e, true);
}
/// <summary>
/// On image load in renderer set the image by event async.
/// </summary>
public static void OnImageLoad(object sender, HtmlImageLoadEventArgs e)
{
ImageLoad(e, false);
}
/// <summary>
/// On image load in renderer set the image by event async.
/// </summary>
public static void ImageLoad(HtmlImageLoadEventArgs e, bool pdfSharp)
{
var img = TryLoadResourceImage(e.Src);
XImage xImg = null;
if (img != null)
{
using (var ms = new MemoryStream())
{
img.Save(ms, img.RawFormat);
xImg = img != null ? XImage.FromStream(ms) : null;
}
}
object imgObj;
if (pdfSharp)
imgObj = xImg;
else
imgObj = img;
if (!e.Handled && e.Attributes != null)
{
if (e.Attributes.ContainsKey("byevent"))
{
int delay;
if (Int32.TryParse(e.Attributes["byevent"], out delay))
{
e.Handled = true;
ThreadPool.QueueUserWorkItem(state =>
{
Thread.Sleep(delay);
e.Callback("https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-snc7/c0.44.403.403/p403x403/318890_10151195988833836_1081776452_n.jpg");
});
return;
}
else
{
e.Callback("http://sphotos-a.xx.fbcdn.net/hphotos-ash4/c22.0.403.403/p403x403/263440_10152243591765596_773620816_n.jpg");
return;
}
}
else if (e.Attributes.ContainsKey("byrect"))
{
var split = e.Attributes["byrect"].Split(',');
var rect = new Rectangle(Int32.Parse(split[0]), Int32.Parse(split[1]), Int32.Parse(split[2]), Int32.Parse(split[3]));
e.Callback(imgObj ?? TryLoadResourceImage("htmlicon"), rect.X, rect.Y, rect.Width, rect.Height);
return;
}
}
if (img != null)
e.Callback(imgObj);
}
private void OnImageLoad(object sender, HtmlImageLoadEventArgs e)
{
if (CheckAccess())
OnImageLoad(e);
else
Dispatcher.Invoke(new Action<HtmlImageLoadEventArgs>(OnImageLoad), e);
}
/// <summary>
/// Propagate the image load event from root container.
/// </summary>
protected virtual void OnImageLoad(HtmlImageLoadEventArgs e)
{
RoutedEventArgs newEventArgs = new RoutedEvenArgs<HtmlImageLoadEventArgs>(ImageLoadEvent, this, e);
RaiseEvent(newEventArgs);
}
/// <summary>
/// Raise the image load event with the given event args.
/// </summary>
/// <param name="args">the event args</param>
internal void RaiseHtmlImageLoadEvent(HtmlImageLoadEventArgs args)
{
try
{
if (ImageLoad != null)
{
ImageLoad(this, args);
}
}
catch (Exception ex)
{
ReportError(HtmlRenderErrorType.Image, "Failed image load event", ex);
}
}