html - WebGL in QuickLook -

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is possible use webgl in quicklook plugin?

i followed tutorial replacing relevant code in generatepreviewforurl.m with

osstatus generatepreviewforurl(void *thisinterface, qlpreviewrequestref preview, cfurlref url, cfstringref contenttypeuti, cfdictionaryref options) {     nsstring *_content = [nsstring stringwithcontentsofurl:(__bridge nsurl *)url encoding:nsutf8stringencoding error:nil];     nsstring* path = @"/users/myusername/downloads/todoql/demo.html";      nserror *error = nil;     nsstring* _html = [nsstring stringwithcontentsoffile:path       encoding:nsutf8stringencoding        error:&error];    if(error) { // if error object instantiated, handle it.       nslog(@"error while loading file: %@", error);       }     nslog(@"\n%@\n",_html);     qlpreviewrequestsetdatarepresentation(preview,(__bridge cfdataref)[_html datausingencoding:nsutf8stringencoding],kuttypehtml,null);      return noerr; }  void cancelpreviewgeneration(void *thisinterface, qlpreviewrequestref preview) {     // implement if supported  }

for debugging, set discard contents of of file quicklook given , rather render local html file located @ /users/myusername/downloads/todoql/demo.html.

i use this barebones webgl example, altering slight show gl context not being loaded:

gl = canvas.getcontext("experimental-webgl"); if(!gl) {   document.body.innerhtml = ":-(";   return; }

indeed, running /usr/bin/qlmanage -p example.example shows disappointed face rather webgl demo.

in safari, demo works long "enable webgl". need enable webgl somehow quicklook plugins? how?


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