Method update

editor/widgets/toolbox_opencv.py:195–216

(self, *args)

        super(OpencvVideo, self).__del__()

    def update(self, *args):
        while not self.thread_stop_flag:
            time.sleep(1.0/self.framerate)
            if self.app_instance==None:
                self.app_instance = self.search_app_instance(self)
                if self.app_instance==None:
                    continue

            with self.app_instance.update_lock:
                self.app_instance.execute_javascript("""
                    var url = '/%(id)s/get_image_data?index=%(frame_index)s';
                    var xhr = new XMLHttpRequest();
                    xhr.open('GET', url, true);
                    xhr.responseType = 'blob'
                    xhr.onload = function(e){
                        var urlCreator = window.URL || window.webkitURL;
                        urlCreator.revokeObjectURL(document.getElementById('%(id)s').src);
                        var imageUrl = urlCreator.createObjectURL(this.response);
                        document.getElementById('%(id)s').src = imageUrl;
                    }
                    xhr.send();
                    """ % {'id': self.identifier, 'frame_index':str(time.time())})
                

    def get_image_data(self, index=0):