Draw the Ceiling in red if preferences are marked for that.

This code actually uses the preferences for something. It will show and
hide the calculated ceiling in red if the prefrerences are changed for
that. One bad thing that I did in this commit ( so it was easy to try ) is
that a preference change will redraw the whole graph - not optimized. I'll
make this better in a later commit so that only the affected items will be
redrawn.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-ui/profile/diveprofileitem.cpp

@@ -364,3 +364,42 @@ void DiveCalculatedCeiling::paint(QPainter* painter, const QStyleOptionGraphicsI
 {
 	QGraphicsPolygonItem::paint(painter, option, widget);
 }
+
+
+void DiveReportedCeiling::modelDataChanged()
+{
+	if (!hAxis || !vAxis || !dataModel || hDataColumn == -1 || vDataColumn == -1)
+		return;
+
+	if (prefs.profile_dc_ceiling){
+		setVisible(prefs.profile_red_ceiling);
+	}else{
+		setVisible(false);
+	}
+
+	QPolygonF p;
+	p.append(QPointF(hAxis->posAtValue(0), vAxis->posAtValue(0)));
+	plot_data *entry = dataModel->data();
+	for (int i = 0, count = dataModel->rowCount(); i < count; i++, entry++) {
+		if (entry->in_deco && entry->stopdepth) {
+			if (entry->stopdepth < entry->depth) {
+				p.append(QPointF(hAxis->posAtValue(entry->sec), vAxis->posAtValue(entry->stopdepth)));
+			} else {
+				p.append(QPointF(hAxis->posAtValue(entry->sec), vAxis->posAtValue(entry->depth)));
+			}
+		} else {
+			p.append(QPointF(hAxis->posAtValue(entry->sec), vAxis->posAtValue(0)));
+		}
+	}
+	setPolygon(p);
+	QLinearGradient pat(0, p.boundingRect().top(), 0, p.boundingRect().bottom());
+	pat.setColorAt(0, getColor(CEILING_SHALLOW));
+	pat.setColorAt(1, getColor(CEILING_DEEP));
+	setPen(QPen(QBrush(Qt::NoBrush),0));
+	setBrush(pat);
+}
+
+void DiveReportedCeiling::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
+{
+	QGraphicsPolygonItem::paint(painter, option, widget);
+}

qt-ui/profile/diveprofileitem.h

@@ -87,4 +87,11 @@ public:
 	virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
 };
 
+class DiveReportedCeiling : public AbstractProfilePolygonItem{
+	Q_OBJECT
+
+public:
+	virtual void modelDataChanged();
+	virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
+};
 #endif

qt-ui/profile/profilewidget2.cpp

@@ -39,7 +39,8 @@ ProfileWidget2::ProfileWidget2(QWidget *parent) :
 	cartesianPlane(new DiveCartesianPlane()),
 	meanDepth(new DiveLineItem()),
 	diveComputerText(new DiveTextItem()),
-	diveCeiling(NULL)
+	diveCeiling(NULL),
+	reportedCeiling(NULL)
 {
 	setScene(new QGraphicsScene());
 	scene()->setSceneRect(0, 0, 100, 100);
@@ -386,6 +387,18 @@ void ProfileWidget2::plotDives(QList<dive*> dives)
 		allTissues.append(tissueItem);
 		scene()->addItem(tissueItem);
 	}
+
+	if(reportedCeiling){
+		scene()->removeItem(reportedCeiling);
+		delete reportedCeiling;
+	}
+	reportedCeiling = new DiveReportedCeiling();
+	reportedCeiling->setHorizontalAxis(timeAxis);
+	reportedCeiling->setVerticalAxis(profileYAxis);
+	reportedCeiling->setModel(dataModel);
+	reportedCeiling->setVerticalDataColumn(DivePlotDataModel::CEILING);
+	reportedCeiling->setHorizontalDataColumn(DivePlotDataModel::TIME);
+	scene()->addItem(reportedCeiling);
 	emit startProfileState();
 }
 

qt-ui/profile/profilewidget2.h

@@ -16,6 +16,7 @@
 #include "graphicsview-common.h"
 #include "divelineitem.h"
 
+class DiveReportedCeiling;
 class DiveTextItem;
 class TemperatureAxis;
 class DiveEventItem;
@@ -33,6 +34,7 @@ struct DiveTemperatureItem;
 struct plot_info;
 struct DiveGasPressureItem;
 struct DiveCalculatedCeiling;
+struct DiveReportedCeiling;
 
 class ProfileWidget2 : public QGraphicsView {
 	Q_OBJECT
@@ -86,6 +88,7 @@ private:
 	DiveTextItem *diveComputerText;
 	DiveCalculatedCeiling *diveCeiling;
 	QList<DiveCalculatedCeiling*> allTissues;
+	DiveReportedCeiling *reportedCeiling;
 };
 
 #endif