subsurface/profile-widget/tankitem.cpp
Berthold Stoeger 22a1120b30 core: move gasname() to struct gasmix
Also, turn it to use std::string instead of writing into a
global(!) buffer. This was not reentrant.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2024-08-13 19:28:30 +02:00

98 lines
3 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#include "profile-widget/tankitem.h"
#include "profile-widget/divecartesianaxis.h"
#include "profile-widget/divetextitem.h"
#include "core/dive.h"
#include "core/event.h"
#include "core/profile.h"
#include <QPen>
#include <QFontMetrics>
static const double border = 1.0;
TankItem::TankItem(const DiveCartesianAxis &axis, double dpr) :
hAxis(axis),
dpr(dpr)
{
QColor red(PERSIANRED1);
QColor blue(AIR_BLUE);
QColor yellow(NITROX_YELLOW);
QColor green(NITROX_GREEN);
QLinearGradient nitroxGradient(QPointF(0, 0), QPointF(0, height()));
nitroxGradient.setColorAt(0.0, green);
nitroxGradient.setColorAt(0.49, green);
nitroxGradient.setColorAt(0.5, yellow);
nitroxGradient.setColorAt(1.0, yellow);
nitrox = nitroxGradient;
oxygen = green;
QLinearGradient trimixGradient(QPointF(0, 0), QPointF(0, height()));
trimixGradient.setColorAt(0.0, green);
trimixGradient.setColorAt(0.49, green);
trimixGradient.setColorAt(0.5, red);
trimixGradient.setColorAt(1.0, red);
trimix = trimixGradient;
air = blue;
}
double TankItem::height() const
{
return DiveTextItem::fontHeight(dpr, 1.0) + 2.0 * border * dpr;
}
void TankItem::createBar(int startTime, int stopTime, struct gasmix gas)
{
qreal x = hAxis.posAtValue(startTime);
qreal w = hAxis.posAtValue(stopTime) - hAxis.posAtValue(startTime);
// pick the right gradient, size, position and text
QGraphicsRectItem *rect = new QGraphicsRectItem(x, 0, w, height(), this);
if (gasmix_is_air(gas))
rect->setBrush(air);
else if (gas.he.permille)
rect->setBrush(trimix);
else if (gas.o2.permille == 1000)
rect->setBrush(oxygen);
else
rect->setBrush(nitrox);
rect->setPen(QPen(QBrush(), 0.0)); // get rid of the thick line around the rectangle
rects.push_back(rect);
DiveTextItem *label = new DiveTextItem(dpr, 1.0, Qt::AlignVCenter | Qt::AlignRight, rect);
label->set(QString::fromStdString(gas.name()), Qt::black);
label->setPos(x + 2.0 * dpr, height() / 2.0);
label->setZValue(101);
}
void TankItem::setData(const struct dive *d, const struct divecomputer *dc, int plotStartTime, int plotEndTime)
{
// remove the old rectangles
qDeleteAll(rects);
rects.clear();
if (!d || !dc)
return;
// We don't have enougth data to calculate things, quit.
if (plotEndTime < 0 || plotEndTime <= plotStartTime)
return;
// Bail if there are no cylinders
if (d->cylinders.empty())
return;
// start with the first gasmix and at the start of the plotted range
event_loop loop("gaschange");
struct gasmix gasmix = gasmix_invalid;
const struct event *ev;
while ((ev = loop.next(*dc)) != nullptr && ev->time.seconds <= plotStartTime)
gasmix = d->get_gasmix_from_event(*ev);
// work through all the gas changes and add the rectangle for each gas while it was used
int startTime = plotStartTime;
while (ev && (int)ev->time.seconds < plotEndTime) {
createBar(startTime, ev->time.seconds, gasmix);
startTime = ev->time.seconds;
gasmix = d->get_gasmix_from_event(*ev);
ev = loop.next(*dc);
}
createBar(startTime, plotEndTime, gasmix);
}