private void RenderAnimation (Cairo.Context cr)
{
if (stage.Actor == null) {
// We are not in a transition, just render
RenderStage (cr, current_track, current_image);
return;
}
if (current_track == null) {
// Fade in the whole stage, nothing to fade out
CairoExtensions.PushGroup (cr);
RenderStage (cr, incoming_track, incoming_image);
CairoExtensions.PopGroupToSource (cr);
cr.PaintWithAlpha (stage.Actor.Percent);
return;
}
// Draw the old cover art more and more translucent
CairoExtensions.PushGroup (cr);
RenderCoverArt (cr, current_image);
CairoExtensions.PopGroupToSource (cr);
cr.PaintWithAlpha (1.0 - stage.Actor.Percent);
// Draw the new cover art more and more opaque
CairoExtensions.PushGroup (cr);
RenderCoverArt (cr, incoming_image);
CairoExtensions.PopGroupToSource (cr);
cr.PaintWithAlpha (stage.Actor.Percent);
bool same_artist_album = incoming_track != null ? incoming_track.ArtistAlbumEqual (current_track) : false;
bool same_track = incoming_track != null ? incoming_track.Equals (current_track) : false;
if (same_artist_album) {
RenderTrackInfo (cr, incoming_track, same_track, true);
}
// Don't xfade the text since it'll look bad (overlapping words); instead, fade
// the old out, and then the new in
if (stage.Actor.Percent <= 0.5) {
// Fade out old text
CairoExtensions.PushGroup (cr);
RenderTrackInfo (cr, current_track, !same_track, !same_artist_album);
CairoExtensions.PopGroupToSource (cr);
cr.PaintWithAlpha (1.0 - (stage.Actor.Percent * 2.0));
} else {
// Fade in new text
CairoExtensions.PushGroup (cr);
RenderTrackInfo (cr, incoming_track, !same_track, !same_artist_album);
CairoExtensions.PopGroupToSource (cr);
cr.PaintWithAlpha ((stage.Actor.Percent - 0.5) * 2.0);
}
}
