Reworked the calculate_max_limits and plotted the dive.

Created a new version of calculate_max_limits that doesn't have a
graphics_context and returns a plot_info. The code is basically the same
as the old calculate_max_limits, so there's not much to talk about.

The rest of the code is just boilerplate to plug the Profile
code with the axis and model stuff, to be plotted on screen.

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

profile.c

@@ -717,6 +717,67 @@ static void check_gas_change_events(struct dive *dive, struct divecomputer *dc,
 	set_cylinder_index(pi, i, cylinderindex, ~0u);
 }
 
+
+struct plot_info calculate_max_limits_new(struct dive *dive, struct divecomputer *dc)
+{
+	struct plot_info pi;
+	int maxdepth = dive->maxdepth.mm;
+	int maxtime = 0;
+	int maxpressure = 0, minpressure = INT_MAX;
+	int mintemp = dive->mintemp.mkelvin;
+	int maxtemp = dive->maxtemp.mkelvin;
+	int cyl;
+
+	/* Get the per-cylinder maximum pressure if they are manual */
+	for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) {
+		unsigned int mbar = dive->cylinder[cyl].start.mbar;
+		if (mbar > maxpressure)
+			maxpressure = mbar;
+	}
+
+	/* Then do all the samples from all the dive computers */
+	do {
+		int i = dc->samples;
+		int lastdepth = 0;
+		struct sample *s = dc->sample;
+
+		while (--i >= 0) {
+			int depth = s->depth.mm;
+			int pressure = s->cylinderpressure.mbar;
+			int temperature = s->temperature.mkelvin;
+
+			if (!mintemp && temperature < mintemp)
+				mintemp = temperature;
+			if (temperature > maxtemp)
+				maxtemp = temperature;
+
+			if (pressure && pressure < minpressure)
+				minpressure = pressure;
+			if (pressure > maxpressure)
+				maxpressure = pressure;
+
+			if (depth > maxdepth)
+				maxdepth = s->depth.mm;
+			if ((depth > SURFACE_THRESHOLD || lastdepth > SURFACE_THRESHOLD) &&
+			    s->time.seconds > maxtime)
+				maxtime = s->time.seconds;
+			lastdepth = depth;
+			s++;
+		}
+	} while ((dc = dc->next) != NULL);
+
+	if (minpressure > maxpressure)
+		minpressure = 0;
+
+	pi.maxdepth = maxdepth;
+	pi.maxtime = maxtime;
+	pi.maxpressure = maxpressure;
+	pi.minpressure = minpressure;
+	pi.mintemp = mintemp;
+	pi.maxtemp = maxtemp;
+	return pi;
+}
+
 void calculate_max_limits(struct dive *dive, struct divecomputer *dc, struct graphics_context *gc)
 {
 	struct plot_info *pi;

profile.h

@@ -43,8 +43,9 @@ struct plot_data {
 	int stopdepth_calc;
 	int pressure_time;
 };
-
+//TODO: remove the calculatE_max_limits as soon as the new profile is done.
 void calculate_max_limits(struct dive *dive, struct divecomputer *dc, struct graphics_context *gc);
+struct plot_info calculate_max_limits_new(struct dive *dive, struct divecomputer *dc);
 struct plot_info *create_plot_info(struct dive *dive, struct divecomputer *dc, struct graphics_context *gc, bool print_mode);
 int setup_temperature_limits(struct graphics_context *gc);
 int get_cylinder_pressure_range(struct graphics_context *gc);

qt-ui/profile/profilewidget2.cpp

@@ -5,6 +5,7 @@
 #include "divecartesianaxis.h"
 #include "diveprofileitem.h"
 #include "helpers.h"
+#include "profile.h"
 
 #include <QStateMachine>
 #include <QSignalTransition>
@@ -228,7 +229,47 @@ ProfileWidget2::ProfileWidget2(QWidget *parent) :
 // Currently just one dive, but the plan is to enable All of the selected dives.
 void ProfileWidget2::plotDives(QList<dive*> dives)
 {
+	// I Know that it's a list, but currently we are
+	// using just the first.
+	struct dive *d = dives.first();
+	if(!d)
+		return;
 
+	// Here we need to probe for the limits of the dive.
+	// There's already a function that does exactly that,
+	// but it's using the graphics context, and I need to
+	// replace that.
+	struct divecomputer *currentdc = select_dc(&d->dc);
+	Q_ASSERT(currentdc);
+
+	/* This struct holds all the data that's about to be plotted.
+	 * I'm not sure this is the best approach ( but since we are
+	 * interpolating some points of the Dive, maybe it is... )
+	 * The  Calculation of the points should be done per graph,
+	 * so I'll *not* calculate everything if something is not being
+	 * shown.
+	 */
+	struct plot_info pInfo = calculate_max_limits_new(d, currentdc);
+
+	profileYAxis->setMaximum(pInfo.maxdepth);
+	profileYAxis->updateTicks();
+	timeAxis->setMaximum(pInfo.maxtime);
+	timeAxis->updateTicks();
+	dataModel->setDive(current_dive, pInfo);
+
+	if(diveProfileItem){
+		//diveProfileItem->animateDelete();
+		scene()->removeItem(diveProfileItem);
+		delete diveProfileItem;
+	}
+	diveProfileItem = new DiveProfileItem();
+	diveProfileItem->setHorizontalAxis(timeAxis);
+	diveProfileItem->setVerticalAxis(profileYAxis);
+	diveProfileItem->setModel(dataModel);
+	diveProfileItem->setVerticalDataColumn(DivePlotDataModel::DEPTH);
+	diveProfileItem->setHorizontalDataColumn(DivePlotDataModel::TIME);
+	scene()->addItem(diveProfileItem);
+	emit startProfileState();
 }
 
 void ProfileWidget2::settingsChanged()