func (m *Module) Display(display Display, sz size.Event, glctx gl.Context, images *glutil.Images) {
im := images.NewImage(sz.WidthPx, sz.HeightPx)
switch {
case m.err != nil:
// There was an error of some kind. We should display the error indication until the error
// is removed from the module by a timeout.
m.renderInformation(im.RGBA, sz.Size(), errorBackground, "T_T", "T_T")
case !display.Loaded:
// We haven't loaded any predictions yet. Dislay the loading screen.
loadingStr := "Loading" + strings.Repeat(".", int(time.Now().Unix()%4))
m.renderInformation(im.RGBA, sz.Size(), loadingBackground, loadingStr, "Loading...")
case !display.NextOK:
// We don't have a prediction for the next train. This is probably because there are no
// trains coming for a while (ex., after nightly shutdown).
m.renderInformation(im.RGBA, sz.Size(), loadingBackground, "No trains :(", "No trains :(")
default:
// If everything else is ok, then we have at least 1 prediction. Display it.
m.render(im.RGBA, display, sz.Size())
}
if display.TransitRouteName != "" {
m.renderTransitRouteName(im.RGBA, sz.Size(), display.TransitRouteName)
}
im.Upload()
im.Draw(
sz,
geom.Point{},
geom.Point{X: sz.WidthPt},
geom.Point{Y: sz.HeightPt},
sz.Bounds())
im.Release()
}
