This is probably not the best performing solution, but wanted to share
it regardless.
Given that a band has an existing SpanHighlightDecorator, that is
simply a "watermark" text for the entire band that should always be
visible, we did the following:
....
band.addOnScrollListener(this.scrollListener);
....
// scroll listener for all source bands, not including the
overview band
scrollListener : function(band) {
var minVisibleDate = band.getMinVisibleDate();
// find watermarks
for (var j = 0; j < band._decorators.length; j++) {
var d = band._decorators[j];
// move watermarks, but not the "now" line
if (d instanceof Timeline.SpanHighlightDecorator) {
band._decorators[j]._startDate = minVisibleDate;
band._decorators[j]._endDate = minVisibleDate;
break;
}
}
band._paintDecorators();
}
I wonder if there is a better solution using a background image for
the band?
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