Recalculate the decompression if the date / time of a dive changes

The pre-existing tissue load going into a dive can change if the start
time of a dive changes. Therefore we need to recalculate the ceiling when
editing start time (or date) of a dive.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-ui/maintab.cpp

@@ -978,6 +978,7 @@ void MainTab::on_dateEdit_dateChanged(const QDate &date)
 	dateTime.setTimeSpec(Qt::UTC);
 	dateTime.setDate(date);
 	DivePlannerPointsModel::instance()->getDiveplan().when = displayed_dive.when = dateTime.toTime_t();
+	emit dateTimeChanged();
 }
 
 void MainTab::on_timeEdit_timeChanged(const QTime &time)
@@ -989,6 +990,7 @@ void MainTab::on_timeEdit_timeChanged(const QTime &time)
 	dateTime.setTimeSpec(Qt::UTC);
 	dateTime.setTime(time);
 	DivePlannerPointsModel::instance()->getDiveplan().when = displayed_dive.when = dateTime.toTime_t();
+	emit dateTimeChanged();
 }
 
 // changing the tags on multiple dives is semantically strange - what's the right thing to do?

qt-ui/maintab.h

@@ -53,6 +53,7 @@ public:
 
 signals:
 	void addDiveFinished();
+	void dateTimeChanged();
 
 public
 slots:

qt-ui/profile/diveprofileitem.cpp

@@ -11,6 +11,7 @@
 #include "helpers.h"
 #include "diveplanner.h"
 #include "libdivecomputer/parser.h"
+#include "mainwindow.h"
 
 #include <QPen>
 #include <QPainter>
@@ -675,6 +676,7 @@ DiveCalculatedCeiling::DiveCalculatedCeiling() : is3mIncrement(false), gradientF
 	gradientFactor->setY(0);
 	gradientFactor->setBrush(getColor(PRESSURE_TEXT));
 	gradientFactor->setAlignment(Qt::AlignHCenter | Qt::AlignBottom);
+	connect(MainWindow::instance()->information(), SIGNAL(dateTimeChanged()), this, SLOT(recalc()));
 	settingsChanged();
 }
 
@@ -757,11 +759,16 @@ void DiveReportedCeiling::modelDataChanged(const QModelIndex &topLeft, const QMo
 	setBrush(pat);
 }
 
+void DiveCalculatedCeiling::recalc()
+{
+	dataModel->calculateDecompression();
+}
+
 void DiveCalculatedCeiling::settingsChanged()
 {
 	if (dataModel && is3mIncrement != prefs.calcceiling3m) {
 		// recalculate that part.
-		dataModel->calculateDecompression();
+		recalc();
 	}
 	is3mIncrement = prefs.calcceiling3m;
 	setVisible(prefs.calcceiling);

qt-ui/profile/diveprofileitem.h

@@ -162,6 +162,10 @@ public:
 	virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
 	virtual void settingsChanged();
 
+public
+slots:
+	void recalc();
+
 private:
 	bool is3mIncrement;
 	DiveTextItem *gradientFactor;