df52d842cf575c8b1f250baed87aa0b937f385a8
kate
  Thu Jan 26 14:09:50 2017 -0800
Initial cut of hgTracks and hgTrackUi for new barchart type track (generalization of GTEx gene expression display). refs #18736

diff --git src/hg/hgTracks/hgTracks.h src/hg/hgTracks/hgTracks.h
index 2f3f600..3e8c979 100644
--- src/hg/hgTracks/hgTracks.h
+++ src/hg/hgTracks/hgTracks.h
@@ -1492,30 +1492,33 @@
 /* Gene-Tissue Expression (GTEX) gene track*/
 
 void messageLineMethods(struct track *track);
 /* Methods for drawing a single-height message line instead of track items,
  * e.g. if source was compiled without a necessary library. */
 
 void rmskJoinedMethods(struct track *track);
 /* construct track for detailed repeat visualization */
 
 void lrgMethods(struct track *tg);
 /* Locus Reference Genomic (bigBed 12 +) handlers. */
 
 void peptideAtlasMethods(struct track *tg);
 /* PeptideAtlas (bed 12+) handlers */
 
+void barChartMethods(struct track *tg);
+/* Bar Chart track type: draw fixed width chart of colored bars over a BED item */
+
 void parentChildCartCleanup(struct track *trackList,struct cart *newCart,struct hash *oldVars);
 /* When composite/view settings changes, remove subtrack specific vis
    When superTrackChild is found and selected, shape superTrack to match. */
 
 void dontLoadItems(struct track *tg);
 /* No-op loadItems when we aren't going to try. */
 
 void filterItems(struct track *tg, boolean (*filter)(struct track *tg, void *item), 
                 char *filterType);
 /* Filter out items from track->itemList. */
 
 //#define REMOTE_TRACK_AJAX_CALLBACK
 #ifdef REMOTE_TRACK_AJAX_CALLBACK
 #define REMOTE_TRACK_HEIGHT (tl.fontHeight*2)