src/hg/hgTracks/multiWig.c 1.1

Index: src/hg/hgTracks/multiWig.c
===================================================================
RCS file: src/hg/hgTracks/multiWig.c
diff -N src/hg/hgTracks/multiWig.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/hg/hgTracks/multiWig.c	7 May 2010 22:30:14 -0000	1.1
@@ -0,0 +1,67 @@
+/* A container for multiple wiggles. */
+
+#include "common.h"
+#include "hash.h"
+#include "linefile.h"
+#include "jksql.h"
+#include "hdb.h"
+#include "hgTracks.h"
+#include "container.h"
+#include "wigCommon.h"
+
+static void multiWigDraw(struct track *tg, int seqStart, int seqEnd,
+        struct hvGfx *hvg, int xOff, int yOff, int width, 
+        MgFont *font, Color color, enum trackVisibility vis)
+/* Draw items in container. */
+{
+struct track *subtrack;
+for (subtrack = tg->subtracks; subtrack != NULL; subtrack = subtrack->next)
+    {
+    if (isSubtrackVisible(subtrack))
+	subtrack->drawItems(subtrack, seqStart, seqEnd, hvg, xOff, yOff, width, font, color, vis);
+    }
+}
+
+static int multiWigTotalHeight(struct track *tg, enum trackVisibility vis)
+/* Return total height of container. */
+{
+int totalHeight =  wigTotalHeight(tg, vis);
+struct track *subtrack;
+for (subtrack = tg->subtracks; subtrack != NULL; subtrack = subtrack->next)
+    subtrack->totalHeight(subtrack, vis);
+return totalHeight;
+}
+
+static boolean graphLimitsAllSame(struct track *trackList)
+/* Return TRUE if graphUpperLimit and graphLowerLimit same for all tracks. */
+{
+struct track *firstTrack = trackList;
+if (firstTrack == NULL)
+    return FALSE;
+struct track *track;
+for (track = firstTrack->next; track != NULL; track = track->next)
+    if (track->graphUpperLimit != firstTrack->graphUpperLimit 
+      || track->graphLowerLimit != firstTrack->graphLowerLimit)
+        return FALSE;
+return TRUE;
+}
+
+static void multiWigLeftLabels(struct track *tg, int seqStart, int seqEnd,
+	struct hvGfx *hvg, int xOff, int yOff, int width, int height,
+	boolean withCenterLabels, MgFont *font, Color color,
+	enum trackVisibility vis)
+/* Draw left labels - by deferring to first subtrack. */
+{
+boolean showNumbers = graphLimitsAllSame(tg->subtracks);
+wigLeftAxisLabels(tg, seqStart, seqEnd, hvg, xOff, yOff, width, height, withCenterLabels,
+	font, color, vis, tg->shortLabel, tg->subtracks->graphUpperLimit, 
+	tg->subtracks->graphLowerLimit, showNumbers);
+}
+
+void multiWigContainerMethods(struct track *track)
+/* Override general container methods for multiWig. */
+{
+track->totalHeight = multiWigTotalHeight;
+track->drawItems = multiWigDraw;
+track->drawLeftLabels = multiWigLeftLabels;
+}