public Bitmap Load(string path, Size size)
{
if (path == null)
{
return(null);
}
if (UrlHelper.IsUrl(path))
{
return(null);
}
if (imageCache.ContainsKey(path))
{
return(imageCache[path]);
}
using (Image img = ImageHelper2.SafeGetEmbeddedThumbnail(path) ?? ImageHelper2.SafeFromFile(path))
{
if (img == null)
{
imageCache.Add(path, null);
}
else
{
ImageHelper.AutoRotateFromExifOrientation(img);
imageCache.Add(path, ResizeImage((Bitmap)img, size.Width, size.Height));
}
}
return(imageCache[path]);
}
private static Bitmap GetElementPreviewImage(IHTMLDocument3 doc3, IHTMLElement element, int snapshotWidth, int snapshotHeight)
{
try
{
// @RIBBON TODO: Need to make this work for RTL as well.
IDisplayServices displayServices = ((IDisplayServices)doc3);
element.scrollIntoView(true);
tagPOINT offset = new tagPOINT();
offset.x = 0;
offset.y = 0;
displayServices.TransformPoint(ref offset, _COORD_SYSTEM.COORD_SYSTEM_CONTENT, _COORD_SYSTEM.COORD_SYSTEM_GLOBAL, element);
using (Bitmap snapshotAfter = HtmlScreenCaptureCore.TakeSnapshot((IViewObject)doc3, snapshotWidth, snapshotHeight))
{
//snapshotAfter.Save(@"c:\temp\snapshot" + element.id + ".bmp");
Rectangle elementRect;
elementRect = new Rectangle(Math.Max(2, offset.x), 2, Math.Min(element.offsetWidth, element.offsetParent.offsetWidth), element.offsetHeight);
if (element.offsetWidth <= 0 || element.offsetHeight <= 0)
{
return(null);
}
Bitmap cropped = ImageHelper2.CropBitmap(snapshotAfter, elementRect);
//cropped.Save(@"c:\temp\snapshot" + element.id + ".cropped.bmp");
return(cropped);
}
}
catch (Exception ex)
{
Trace.Fail("Failed to get element preview image for id " + element.id + ": " + ex);
return(null);
}
}
void Save(Stream stream, ImageFormat format)
{
if (format == ImageFormat.Gif)
{
if ((bitmap.PixelFormat & PixelFormat.Indexed) != PixelFormat.Indexed && bitmap.Palette.Entries.Length == 0 && !ImageHelper2.IsAnimated(bitmap))
{
OctreeQuantizer quantizer = new OctreeQuantizer(255, 8);
bitmap = quantizer.Quantize(bitmap);
}
/*
* ColorPalette p = bitmap.Palette;
* bool seenTransparent = false;
* foreach (Color c in p.Entries)
* {
* if (c.A == 0)
* {
* Trace.Assert(!seenTransparent);
* seenTransparent = true;
* }
* }
*/
}
bitmap.Save(stream, format);
}
private static Bitmap ResizeImage(Bitmap image, int maxWidth, int maxHeight)
{
Size resize = ImageHelper2.ImageResizer.ScaledResize(image, new Size(maxWidth, maxHeight));
return(ImageHelper2.CreateResizedBitmap(image, resize.Width, resize.Height, ImageFormat.Jpeg));
}