subsurface/desktop-widgets/tab-widgets/TabDiveInformation.cpp
Berthold Stoeger c32e71e64d Dive information: fix surface interval calculation
The old surface interval calculation had fundamental issues:

1) process_all_dives(), which calculates the statistics over *all*
   dives was used to get the pointer to the previous dive.
2) If two dives in the table had the same time, one of those would
   have been considered the "previous" dive.
3) If the dive, for which the surface interval is calculated is
   not yet in the table, no previous dive would be determined.

Fix all this by creating a get_surface_interval() function and
removing the "get previous dive" functionality of process_all_dives().
Remove the process_all_dives() call from TabDiveInformation::updateData().

Reported-by: Jan Mulder <jlmulder@xs4all.nl>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-07 05:41:48 +03:00

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// SPDX-License-Identifier: GPL-2.0
#include "TabDiveInformation.h"
#include "ui_TabDiveInformation.h"
#include "../tagwidget.h"
#include <core/qthelper.h>
#include <core/statistics.h>
#include <core/display.h>
TabDiveInformation::TabDiveInformation(QWidget *parent) : TabBase(parent), ui(new Ui::TabDiveInformation())
{
ui->setupUi(this);
}
TabDiveInformation::~TabDiveInformation()
{
delete ui;
}
void TabDiveInformation::clear()
{
ui->sacText->clear();
ui->otuText->clear();
ui->maxcnsText->clear();
ui->oxygenHeliumText->clear();
ui->gasUsedText->clear();
ui->dateText->clear();
ui->diveTimeText->clear();
ui->surfaceIntervalText->clear();
ui->maximumDepthText->clear();
ui->averageDepthText->clear();
ui->waterTemperatureText->clear();
ui->airTemperatureText->clear();
ui->airPressureText->clear();
ui->salinityText->clear();
}
void TabDiveInformation::updateData()
{
clear();
ui->maxcnsText->setText(QString("%1\%").arg(displayed_dive.maxcns));
ui->otuText->setText(QString("%1").arg(displayed_dive.otu));
ui->maximumDepthText->setText(get_depth_string(displayed_dive.maxdepth, true));
ui->averageDepthText->setText(get_depth_string(displayed_dive.meandepth, true));
ui->dateText->setText(get_short_dive_date_string(displayed_dive.when));
ui->waterTemperatureText->setText(get_temperature_string(displayed_dive.watertemp, true));
ui->airTemperatureText->setText(get_temperature_string(displayed_dive.airtemp, true));
volume_t gases[MAX_CYLINDERS] = {};
get_gas_used(&displayed_dive, gases);
QString volumes;
int mean[MAX_CYLINDERS], duration[MAX_CYLINDERS];
per_cylinder_mean_depth(&displayed_dive, select_dc(&displayed_dive), mean, duration);
volume_t sac;
QString gaslist, SACs, separator;
gaslist = ""; SACs = ""; volumes = ""; separator = "";
for (int i = 0; i < MAX_CYLINDERS; i++) {
if (!is_cylinder_used(&displayed_dive, i))
continue;
gaslist.append(separator); volumes.append(separator); SACs.append(separator);
separator = "\n";
gaslist.append(gasname(displayed_dive.cylinder[i].gasmix));
if (!gases[i].mliter)
continue;
volumes.append(get_volume_string(gases[i], true));
if (duration[i]) {
sac.mliter = lrint(gases[i].mliter / (depth_to_atm(mean[i], &displayed_dive) * duration[i] / 60));
SACs.append(get_volume_string(sac, true).append(tr("/min")));
}
}
ui->gasUsedText->setText(volumes);
ui->oxygenHeliumText->setText(gaslist);
ui->diveTimeText->setText(get_dive_duration_string(displayed_dive.duration.seconds, tr("h"), tr("min"), tr("sec"),
" ", displayed_dive.dc.divemode == FREEDIVE));
timestamp_t surface_interval = get_surface_interval(displayed_dive.when);
if (surface_interval >= 0)
ui->surfaceIntervalText->setText(get_dive_surfint_string(surface_interval, tr("d"), tr("h"), tr("min")));
else
ui->surfaceIntervalText->clear();
ui->sacText->setText( mean[0] ? SACs : QString());
if (displayed_dive.surface_pressure.mbar) /* this is ALWAYS displayed in mbar */
ui->airPressureText->setText(QString("%1mbar").arg(displayed_dive.surface_pressure.mbar));
else
ui->airPressureText->clear();
if (displayed_dive.salinity)
ui->salinityText->setText(QString("%1g/").arg(displayed_dive.salinity / 10.0));
else
ui->salinityText->clear();
}