Redefined meaning of a negative index base time.

A negative index base time now corresponds to the last
contributing timestamp instead of the current time.

4 files changed, 9 insertions, 11 deletions

diff --git a/src/bm/bmrequest.cpp b/src/bm/bmrequest.cpp
index 71691ec..e9aac8f 100644
--- a/src/bm/bmrequest.cpp
+++ b/src/bm/bmrequest.cpp
@@ -4906,8 +4906,6 @@ QByteArray BMRequest_IndexGetValues::toReplyBuffer()
     // Get base timestamp ...
     baseTimestamp = argsElem.attributeNode("baseTimestamp").value().toInt(&ok);
     Q_ASSERT(ok);
-    if (baseTimestamp == -1)
-        baseTimestamp = QDateTime::currentDateTime().toTime_t();
 
     // Get median window size ...
     medianWinSize = argsElem.attributeNode("medianWinSize").value().toInt(&ok);
diff --git a/src/bm/index.cpp b/src/bm/index.cpp
index afb5ab1..6bc6c78 100644
--- a/src/bm/index.cpp
+++ b/src/bm/index.cpp
@@ -51,13 +51,6 @@ void Index::init(
     const QList<ResultHistoryInfo *> &candidateRHInfos, QList<int> *evalTimestamps,
     int *rejectedNonPositive)
 {
-    if (baseTimestamp < 0)  {
-        valid = false;
-        invalidReason_ = "negative base timestamp";
-        return;
-    }
-
-    
     int rejectedNonPositive_ = 0;
     QSet<int> etset;
 
@@ -99,6 +92,9 @@ void Index::init(
     qSort(*evalTimestamps);
     evalTimestamps_ = *evalTimestamps;
 
+    if (baseTimestamp < 0)
+        baseTimestamp = evalTimestamps_.last();
+
     valid = true;
     invalidReason_ = "";
 }
diff --git a/src/bm/plotter.cpp b/src/bm/plotter.cpp
index e2ce934..a0e5d73 100644
--- a/src/bm/plotter.cpp
+++ b/src/bm/plotter.cpp
@@ -490,11 +490,15 @@ bool IndexPlotter::drawScenes(
         scene_far->addLine(xmin, y_base, xmax, y_base, QPen(color, 2));
     }
 
+    if (baseTimestamp < 0)
+        baseTimestamp = timestamps.last();
+
     if ((baseTimestamp >= timestamps.first()) && (baseTimestamp <= timestamps.last())) {
         // Draw line indicating the base timestamp ...
         QColor color(50, 50, 255);
         const qreal btx = xmin + (baseTimestamp - loTimestamp) * xfact;
-        scene_far->addLine(btx, ymin, btx, ymax, QPen(color, 2));
+        QGraphicsItem *btItem = scene_far->addLine(btx, ymin, btx, ymax, QPen(color, 2));
+        btItem->setZValue(1);
     }
 
     const int nDispTimestamps = 8;
diff --git a/src/bm/plotter.h b/src/bm/plotter.h
index 789daae..ca15d72 100644
--- a/src/bm/plotter.h
+++ b/src/bm/plotter.h
@@ -84,7 +84,7 @@ private:
     QList<int> timestamps;
     QList<qreal> values;
     QList<int> contributions;
-    int baseTimestamp;
+    mutable int baseTimestamp;
     int baseValuePos;
 
     qreal width;