[PATCH] Heatmap: Draw lines between data points rather than big dots

[Rick Walsh]

By drawing oversize dots for each data point, dots were overlapping such that
the change in tissue presssure wasn't displayed at the right time - typically
out by 1-2 minutes, depending on dive duration.

Drawing a line between discrete points, the data points don't overlap and
change in tissue pressure is displayed at the right time.

Signed-off-by: Rick Walsh <rickmwalsh at gmail.com>
---
 profile-widget/diveprofileitem.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/profile-widget/diveprofileitem.cpp b/profile-widget/diveprofileitem.cpp
index b44586f..8961741 100644
--- a/profile-widget/diveprofileitem.cpp
+++ b/profile-widget/diveprofileitem.cpp
@@ -415,15 +415,15 @@ void DivePercentageItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 		return;
 	painter->save();
 	QPen mypen;
+	mypen.setWidthF(vAxis->posAtValue(0) - vAxis->posAtValue(4));
 	mypen.setCosmetic(false);
-	mypen.setWidth(5);
 	QPolygonF poly = polygon();
-	for (int i = 0, modelDataCount = dataModel->rowCount(); i < modelDataCount; i++) {
+	for (int i = 1, modelDataCount = dataModel->rowCount(); i < modelDataCount; i++) {
 		if (i < poly.count()) {
 			double value = dataModel->index(i, vDataColumn).data().toDouble();
 			mypen.setBrush(QBrush(ColorScale(value)));
 			painter->setPen(mypen);
-			painter->drawPoint(poly[i]);
+			painter->drawLine(poly[i - 1], poly[i]);
 		}
 	}
 	painter->restore();
-- 
2.7.4