Add the gas presssure profile texts.

This just adds the texts for the gas profile. I've also added a method on
the dataModel() to return the diveId of the last used dive in a way that
the other methods can use it.

This code is almost 1-to-1 with the old one, a bit of thinkering can be
used to merge this loop with the upper one.

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

qt-ui/profile/diveplotdatamodel.cpp

@@ -95,8 +95,14 @@ void DivePlotDataModel::setDive(dive* d,const plot_info& pInfo)
 
 	if (d)
 		dc = select_dc(&d->dc);
+	diveId = d->id;
 	plotData = pInfo.entry;
 	sampleCount = pInfo.nr;
 	beginInsertRows(QModelIndex(), 0, sampleCount-1);
 	endInsertRows();
 }
+
+int DivePlotDataModel::id() const
+{
+	return diveId;
+}

qt-ui/profile/diveplotdatamodel.h

@@ -19,9 +19,11 @@ public:
 	void clear();
 	void setDive(struct dive *d, const plot_info& pInfo);
 	plot_data* data();
+	int id() const;
 private:
 	int sampleCount;
 	plot_data *plotData;
+	int diveId;
 };
 
 #endif

qt-ui/profile/diveprofileitem.cpp

@@ -32,7 +32,7 @@ void AbstractProfilePolygonItem::setHorizontalDataColumn(int column)
 	modelDataChanged();
 }
 
-void AbstractProfilePolygonItem::setModel(QAbstractTableModel* model)
+void AbstractProfilePolygonItem::setModel(DivePlotDataModel* model)
 {
 	dataModel = model;
 	modelDataChanged();
@@ -69,6 +69,9 @@ void AbstractProfilePolygonItem::modelDataChanged()
 		poly.append(point);
 	}
 	setPolygon(poly);
+
+	qDeleteAll(texts);
+	texts.clear();
 }
 
 void DiveProfileItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) {
@@ -104,13 +107,10 @@ void DiveProfileItem::modelDataChanged(){
 	pat.setColorAt(0, getColor(DEPTH_TOP));
 	setBrush(QBrush(pat));
 
-	qDeleteAll(texts);
-	texts.clear();
-
 	int last = -1;
 	for (int i = 0, count  = dataModel->rowCount(); i < count; i++) {
 
-		struct plot_data *entry = static_cast<DivePlotDataModel*>(dataModel)->data()+i;
+		struct plot_data *entry = dataModel->data()+i;
 		if (entry->depth < 2000)
 			continue;
 
@@ -243,6 +243,54 @@ void DiveGasPressureItem::modelDataChanged()
 		polygons.last().push_back(point); // The polygon thta will be plotted.
 	}
 	setPolygon(boundingPoly);
+
+	int mbar, cyl;
+	int seen_cyl[MAX_CYLINDERS] = { false, };
+	int last_pressure[MAX_CYLINDERS] = { 0, };
+	int last_time[MAX_CYLINDERS] = { 0, };
+	struct plot_data *entry;
+	struct dive *dive = getDiveById(dataModel->id());
+	Q_ASSERT(dive != NULL);
+
+	cyl = -1;
+	for (int i = 0, count = dataModel->rowCount(); i < count; i++) {
+		entry = dataModel->data() + i;
+		mbar = GET_PRESSURE(entry);
+
+		if (!mbar)
+			continue;
+		if (cyl != entry->cylinderindex) {
+			cyl = entry->cylinderindex;
+			if (!seen_cyl[cyl]) {
+				plot_pressure_value(mbar, entry->sec, Qt::AlignLeft | Qt::AlignBottom);
+// 				plot_gas_value(mbar, entry->sec, LEFT, TOP,
+// 						get_o2(&dive->cylinder[cyl].gasmix),
+// 						get_he(&dive->cylinder[cyl].gasmix));
+				seen_cyl[cyl] = true;
+			}
+		}
+		last_pressure[cyl] = mbar;
+		last_time[cyl] = entry->sec;
+	}
+
+	for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) {
+		if (last_time[cyl]) {
+			plot_pressure_value(last_pressure[cyl], last_time[cyl], Qt::AlignHCenter | Qt::AlignTop);
+		}
+	}
+}
+
+void DiveGasPressureItem::plot_pressure_value(int mbar, int sec, QFlags<Qt::AlignmentFlag> flags)
+{
+	const char *unit;
+	int pressure = get_pressure_units(mbar, &unit);
+	//static text_render_options_t tro = {PRESSURE_TEXT_SIZE, PRESSURE_TEXT, xalign, yalign};
+	DiveTextItem *text = new DiveTextItem(this);
+	text->setPos(hAxis->posAtValue(sec), vAxis->posAtValue(mbar));
+	text->setText(QString("%1 %2").arg(pressure).arg(unit));
+	text->setAlignment(flags);
+	text->setBrush(getColor(PRESSURE_TEXT));
+	texts.push_back(text);
 }
 
 void DiveGasPressureItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)

qt-ui/profile/diveprofileitem.h

@@ -18,6 +18,7 @@
  This is a generically item and should be used as a base for others, I think...
 */
 
+class DivePlotDataModel;
 class DiveTextItem;
 class DiveCartesianAxis;
 class QAbstractTableModel;
@@ -32,7 +33,7 @@ public:
 	AbstractProfilePolygonItem();
 	void setVerticalAxis(DiveCartesianAxis *vertical);
 	void setHorizontalAxis(DiveCartesianAxis *horizontal);
-	void setModel(QAbstractTableModel *model);
+	void setModel(DivePlotDataModel *model);
 	void setHorizontalDataColumn(int column);
 	void setVerticalDataColumn(int column);
 	virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0) = 0;
@@ -41,7 +42,7 @@ public slots:
 protected:
 	DiveCartesianAxis *hAxis;
 	DiveCartesianAxis *vAxis;
-	QAbstractTableModel *dataModel;
+	DivePlotDataModel *dataModel;
 	int hDataColumn;
 	int vDataColumn;
 	QList<DiveTextItem*> texts;
@@ -69,13 +70,13 @@ private:
 
 class DiveGasPressureItem : public AbstractProfilePolygonItem{
 	Q_OBJECT
+
 public:
 	virtual void modelDataChanged();
 	virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
 private:
+	void plot_pressure_value(int mbar, int sec, QFlags<Qt::AlignmentFlag> align);
 	QVector<QPolygonF> polygons;
 };
 
-QGraphicsItemGroup *plotText(text_render_options_t *tro,const QPointF& pos, const QString& text, QGraphicsItem *parent);
-
 #endif