src/hg/hgTracks/bigWigTrack.c 1.7

Index: src/hg/hgTracks/bigWigTrack.c
===================================================================
RCS file: /projects/compbio/cvsroot/kent/src/hg/hgTracks/bigWigTrack.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -b -B -U 1000000 -r1.6 -r1.7
--- src/hg/hgTracks/bigWigTrack.c	24 Jun 2009 18:48:00 -0000	1.6
+++ src/hg/hgTracks/bigWigTrack.c	10 Nov 2009 05:48:17 -0000	1.7
@@ -1,75 +1,75 @@
 /* bigWigTrack - stuff to handle loading and display of bigWig type tracks in browser.   */
 
 #include "common.h"
 #include "hash.h"
 #include "linefile.h"
 #include "jksql.h"
 #include "hdb.h"
 #include "hgTracks.h"
 // #include "wiggle.h"
 // #include "scoredRef.h"
 // #include "customTrack.h"
 #include "localmem.h"
 #include "wigCommon.h"
 #include "bbiFile.h"
 #include "bigWig.h"
 
 static char const rcsid[] = "$Id$";
 
 static void bigWigDrawItems(struct track *tg, int seqStart, int seqEnd,
 	struct hvGfx *hvg, int xOff, int yOff, int width,
 	MgFont *font, Color color, enum trackVisibility vis)
 {
 /* Allocate predraw area. */
 int preDrawZero, preDrawSize;
 struct preDrawElement *preDraw = initPreDraw(width, &preDrawSize, &preDrawZero);
 
 /* Get summary info from bigWig */
 int summarySize = width;
 struct bbiSummaryElement *summary;
 AllocArray(summary, summarySize);
-char *wigFileName = tg->bbiFileName;
-if (bigWigSummaryArrayExtended(wigFileName, chromName, winStart, winEnd, summarySize, summary))
+if (bigWigSummaryArrayExtended(tg->bbiFile, chromName, winStart, winEnd, summarySize, summary))
     {
     /* Convert format to predraw */
     int i;
     for (i=0; i<summarySize; ++i)
         {
 	struct preDrawElement *pe = &preDraw[i + preDrawZero];
 	struct bbiSummaryElement *be = &summary[i];
 	pe->count = be->validCount;
 	pe->min = be->minVal;
 	pe->max = be->maxVal;
 	pe->sumData = be->sumData;
 	pe->sumSquares = be->sumSquares;
 	}
 
     /* Call actual graphing routine. */
     wigDrawPredraw(tg, seqStart, seqEnd, hvg, xOff, yOff, width, font, color, vis,
 		   preDraw, preDrawZero, preDrawSize, &tg->graphUpperLimit, &tg->graphLowerLimit);
     }
 
 freeMem(preDraw);
 freeMem(summary);
 }
 
 static void bigWigLoadItems(struct track *tg)
 /* Fill up tg->items with bedGraphItems derived from a bigWig file */
 {
-if (tg->bbiFileName == NULL)
+if (tg->bbiFile == NULL)
     {
     /* Figure out bigWig file name. */
     struct sqlConnection *conn = hAllocConn(database);
-    tg->bbiFileName = bbiNameFromTable(conn, tg->mapName);
+    char *fileName = bbiNameFromTable(conn, tg->mapName);
+    tg->bbiFile = bigWigFileOpen(fileName);
     hFreeConn(&conn);
     }
 }
 
 void bigWigMethods(struct track *track, struct trackDb *tdb, 
 	int wordCount, char *words[])
 /* Set up bigWig methods. */
 {
 bedGraphMethods(track, tdb, wordCount, words);
 track->loadItems = bigWigLoadItems;
 track->drawItems = bigWigDrawItems;
 }