int IDocHostShowUI.ShowHelp(IntPtr hwnd, string pszHelpFile, uint uCommand, uint dwData, tagPOINT ptMouse, object pDispatchObjectHit)
{
return Hresults.E_NOTIMPL;
}
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;
}
}