private void ProcessImage(CommentImage image, string imageUrl, string originalUrl, ITextViewLine line, int lineNumber, SnapshotSpan span, double scale, string filepath)
{
try
{
var result = image.TrySet(
imageUrl,
originalUrl,
scale,
filepath,
out Exception imageLoadingException);
// Position image and add as adornment
if (imageLoadingException == null)
{
AddAdorment(image, line, lineNumber, span);
}
else
{
Images.TryRemove(lineNumber, out var commentImage);
commentImage.Dispose();
_errorTags.Add(
new TagSpan <ErrorTag>(
span,
new ErrorTag("Trouble loading image", GetErrorMessage(imageLoadingException))));
}
}
catch (Exception ex)
{
ExceptionHandler.Notify(ex, true);
}
}
private void CreateVisuals(ITextViewLine line, int lineNumber, string filepath)
{
try
{
var lineText = line.Extent.GetText();
var lines = lineText.Split(
new string[] { Environment.NewLine },
StringSplitOptions.RemoveEmptyEntries);
// multiline mean a block of code is collapsed
// do not display pics from the collapsed text
if (lines.Length > 1)
{
return;
}
var matchIndex = CommentImageParser.Match(_contentTypeName, lineText, out string matchedText);
if (matchIndex >= 0)
{
// Get coordinates of text
var start = line.Extent.Start.Position + matchIndex;
var end = line.Start + (line.Extent.Length - 1);
var span = new SnapshotSpan(_view.TextSnapshot, Span.FromBounds(start, end));
CommentImageParser.TryParse(
matchedText,
out string imageUrl, out double scale, out Exception xmlParseException);
if (xmlParseException != null)
{
CommentImage commentImage;
if (Images.TryRemove(lineNumber, out commentImage))
{
_layer.RemoveAdornment(commentImage);
commentImage.Dispose();
}
_errorTags.Add(
new TagSpan <ErrorTag>(
span,
new ErrorTag("XML parse error", GetErrorMessage(xmlParseException))));
return;
}
var reload = false;
CommentImage image = Images.AddOrUpdate(lineNumber, ln =>
{
reload = true;
return(new CommentImage(_variableExpander));
}, (ln, img) =>
{
if (img.OriginalUrl == imageUrl && img.Scale != scale)
{
// URL same but scale changed
img.Scale = scale;
reload = true;
}
else if (img.OriginalUrl != imageUrl)
{
// URL different, must load from new source
reload = true;
}
return(img);
});
var originalUrl = imageUrl;
if (reload)
{
if (_processingUris.Contains(imageUrl))
{
return;
}
if (imageUrl.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
if (ImageCache.Instance.TryGetValue(imageUrl, out string localPath))
{
imageUrl = localPath;
}
else
{
_processingUris.Add(imageUrl);
var tempPath = Path.Combine(Path.GetTempPath(), Path.GetFileName(imageUrl));
WebClient client = new WebClient();
client.DownloadDataCompleted += Client_DownloadDataCompleted;
_toaddImages.TryAdd(
client,
new ImageParameters()
{
Uri = imageUrl,
LocalPath = tempPath,
Image = image,
Line = line,
LineNumber = lineNumber,
Span = span,
Scale = scale,
Filepath = filepath
});
client.DownloadDataAsync(new Uri(imageUrl));
return;
}
}
}
if (imageUrl.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
if (ImageCache.Instance.TryGetValue(imageUrl, out string localPath))
{
imageUrl = localPath;
}
}
ProcessImage(image, imageUrl, originalUrl, line, lineNumber, span, scale, filepath);
}
else
{
Images.TryRemove(lineNumber, out var commentImage);
commentImage.Dispose();
}
}
catch (Exception ex)
{
ExceptionHandler.Notify(ex, true);
}
}