public bool ShowPdf(string pdfFile)
{
_pdfPath = pdfFile;
#if !__MonoCS__
var arc = _pdfViewerControl as AdobeReaderControl;
if (arc != null) // We haven't yet had a problem displaying with Acrobat...
{
if (arc.ShowPdf(pdfFile))
return true; // success using acrobat
// Acrobat not working (probably not installed). Switch to using Gecko to display PDF.
UpdatePdfViewer(new GeckoWebBrowser());
// and continue to show it using that.
}
#endif
// Escaping the filename twice for characters like # is needed in order to get the
// pdf filename through Geckofx/xulrunner to our local server on Linux. This is to
// prevent the filename from being cut short at the # character. As far as I can
// tell, Linux xulrunner strips one level of escaping on input, then before passing
// the query on to the localhost server it truncates the query portion at the first
// # it sees. The localhost processor expects one level of encoding, and we deal
// with having a # in the query (file path) there without any problem. You may
// regard this double escaping as a hack to get around the Linux xulrunner which
// behaves differently than the Windows xulrunner. It is an exception to the rule
// of matching EscapeCharsForHttp() with UnescapeCharsForHttp(). See a comment in
// https://jira.sil.org/browse/BL-951 for a description of the buggy program
// behavior without this hack.
var file = pdfFile;
if (SIL.PlatformUtilities.Platform.IsUnix)
file = file.EscapeCharsForHttp().EscapeCharsForHttp();
var url = string.Format("{0}{1}?file=/bloom/{2}",
Bloom.Api.ServerBase.ServerUrlWithBloomPrefixEndingInSlash,
FileLocator.GetFileDistributedWithApplication("pdf/web/viewer.html"),
file);
var browser = ((GeckoWebBrowser)_pdfViewerControl);
browser.Navigate(url);
browser.DocumentCompleted += (sender, args) =>
{
// We want to suppress several of the buttons that the control normally shows.
// It's nice if we don't have to modify the html and related files, because they are unzipped from a package we install
// from a source I'm not sure we control, and installed into a directory we can't modify at runtime.
// A workaround is to tweak the stylesheet to hide them. The actual buttons (and two menu items) are easily
// hidden by ID.
// Unfortunately we're getting rid of a complete group in the pull-down menu, which leaves an ugly pair of
// adjacent separators. And the separators don't have IDs so we can't easily select just one to hide.
// Fortunately there are no other divs in the parent (besides the separator) so we just hide the second one.
// This is unfortunately rather fragile and may not do exactly what we want if the viewer.html file
// defining the pdfjs viewer changes.
GeckoStyleSheet stylesheet = browser.Document.StyleSheets.First();
stylesheet.CssRules.Add("#toolbarViewerRight, #viewOutline, #viewAttachments, #viewThumbnail, #viewFind {display: none}");
stylesheet.CssRules.Add("#previous, #next, #pageNumberLabel, #pageNumber, #numPages {display: none}");
stylesheet.CssRules.Add("#toolbarViewerLeft .splitToolbarButtonSeparator {display: none}");
#if !__MonoCS__
if (!_haveShownAdobeReaderRecommendation)
{
_haveShownAdobeReaderRecommendation = true;
var message = LocalizationManager.GetString("PublishTab.Notifications.AdobeReaderRecommendation",
"This PDF viewer can be improved by installing the free Adobe Reader on this computer.");
RunJavaScript("toastr.remove();" +
"toastr.options = { 'positionClass': 'toast-bottom-right','timeOut': '15000'};" +
"toastr['info']('" + message + "')");
}
#endif
};
return true;
}
