2961c25331a73eba4ddbca0b848b43e4a467fa75
chmalee
  Thu Jul 23 11:12:40 2026 -0700
Trying this again. Let users use a rightclick option to change the color of single bed-like items, gated via hg.conf setting canColorItems, refs #37778

diff --git src/hg/hgTracks/hgTracks.c src/hg/hgTracks/hgTracks.c
index 3ce6f9ba3be..1d7f416e256 100644
--- src/hg/hgTracks/hgTracks.c
+++ src/hg/hgTracks/hgTracks.c
@@ -9104,44 +9104,51 @@
 char *freezeName = NULL;
 boolean hideAll = cgiVarExists("hgt.hideAll");
 boolean hideTracks = cgiOptionalString( "hideTracks") != NULL;
 boolean defaultTracks = cgiVarExists("hgt.reset");
 boolean showedRuler = FALSE;
 boolean showTrackControls = cartUsualBoolean(cart, "trackControlsOnMain", TRUE);
 boolean multiRegionButtonTop = cfgOptionBooleanDefault(MULTI_REGION_CFG_BUTTON_TOP, TRUE);
 long thisTime = 0, lastTime = 0;
 
 basesPerPixel = ((float)virtWinBaseCount) / ((float)fullInsideWidth);
 zoomedToBaseLevel = (virtWinBaseCount <= fullInsideWidth / tl.mWidth);
 zoomedToCodonLevel = (ceil(virtWinBaseCount/3) * tl.mWidth) <= fullInsideWidth;
 zoomedToCodonNumberLevel = (ceil(virtWinBaseCount/3) * tl.mWidth * 5) <= fullInsideWidth;
 zoomedToCdsColorLevel = (virtWinBaseCount <= fullInsideWidth*3);
 
+boolean canColorItems = cfgOptionBooleanDefault("canColorItems", FALSE);
+if (canColorItems)
+    createItemColorHash();
 
 if (psOutput != NULL)
    {
    hPrintDisable();
    hideControls = TRUE;
    withNextItemArrows = FALSE;
    withNextExonArrows = FALSE;
    hgFindMatchesShowHighlight = FALSE;
    }
 
 /* Tell browser where to go when they click on image. */
 hPrintf("<FORM ACTION=\"%s\" NAME=\"TrackHeaderForm\" id=\"TrackHeaderForm\" METHOD=\"GET\">\n\n", hgTracksName());
 jsonObjectAdd(jsonForClient, "insideX", newJsonNumber(insideX));
 jsonObjectAdd(jsonForClient, "revCmplDisp", newJsonBoolean(revCmplDisp));
+jsonObjectAdd(jsonForClient, "canColorItems", newJsonBoolean(canColorItems));
+if (canColorItems)
+    jsonObjectAdd(jsonForClient, "itemColors",
+                  newJsonString(cartUsualString(cart, "itemColors", "")));
 
 if (hPrintStatus()) cartSaveSession(cart);
 
 /* See if want to include sequence search results. */
 userSeqString = cartOptionalString(cart, "ss");
 if (userSeqString && !ssFilesExist(userSeqString))
     {
     userSeqString = NULL;
     cartRemove(cart, "ss");
     }
 if (!hideControls)
     hideControls = cartUsualBoolean(cart, "hideControls", FALSE);
 
 initTrackList();
 //warn("slCount(trackList) after getTrackList: %d", slCount(trackList));