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db516b6d4e
Fix the initial gasmix that is shown in the tank bar of the profile. Also add a meaningful gas name for gases with negative values for percentages. @bstoeger: This is a side effect of the `event_loop` functionality introduced as part of #4198. In the case of an `event_loop("gasmix")` this does not take into account the edge case where there is no gaschange event at the very beginning of the dive, and the first gasmix is implicitly used as the starting gasmix. This happens for planned and manually added dives, but also for some dive computers. We are using the same kind of loop in a number of other places in `core/profile.cpp`, `core/dive.cpp`, `core/gaspressures.cpp`, and `profile-widget/tankitem.cpp`, and I am wondering if we should be converting these to use `gasmix_loop` instead to avoid being bit by this special case? Signed-off-by: Michael Keller <github@ike.ch>
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#include "profile-widget/tankitem.h"
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#include "profile-widget/divecartesianaxis.h"
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#include "profile-widget/divetextitem.h"
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#include "core/dive.h"
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#include "core/event.h"
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#include "core/profile.h"
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#include <QPen>
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#include <QFontMetrics>
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static const double border = 1.0;
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TankItem::TankItem(const DiveCartesianAxis &axis, double dpr) :
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hAxis(axis),
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dpr(dpr)
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{
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QColor red(PERSIANRED1);
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QColor blue(AIR_BLUE);
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QColor yellow(NITROX_YELLOW);
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QColor green(NITROX_GREEN);
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QLinearGradient nitroxGradient(QPointF(0, 0), QPointF(0, height()));
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nitroxGradient.setColorAt(0.0, green);
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nitroxGradient.setColorAt(0.49, green);
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nitroxGradient.setColorAt(0.5, yellow);
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nitroxGradient.setColorAt(1.0, yellow);
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nitrox = nitroxGradient;
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oxygen = green;
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QLinearGradient trimixGradient(QPointF(0, 0), QPointF(0, height()));
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trimixGradient.setColorAt(0.0, green);
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trimixGradient.setColorAt(0.49, green);
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trimixGradient.setColorAt(0.5, red);
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trimixGradient.setColorAt(1.0, red);
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trimix = trimixGradient;
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air = blue;
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}
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double TankItem::height() const
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{
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return DiveTextItem::fontHeight(dpr, 1.0) + 2.0 * border * dpr;
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}
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void TankItem::createBar(int startTime, int stopTime, struct gasmix gas)
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{
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qreal x = hAxis.posAtValue(startTime);
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qreal w = hAxis.posAtValue(stopTime) - hAxis.posAtValue(startTime);
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// pick the right gradient, size, position and text
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QGraphicsRectItem *rect = new QGraphicsRectItem(x, 0, w, height(), this);
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if (gasmix_is_air(gas))
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rect->setBrush(air);
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else if (gas.he.permille)
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rect->setBrush(trimix);
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else if (gas.o2.permille == 1000)
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rect->setBrush(oxygen);
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else
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rect->setBrush(nitrox);
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rect->setPen(QPen(QBrush(), 0.0)); // get rid of the thick line around the rectangle
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rects.push_back(rect);
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DiveTextItem *label = new DiveTextItem(dpr, 1.0, Qt::AlignVCenter | Qt::AlignRight, rect);
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label->set(QString::fromStdString(gas.name()), Qt::black);
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label->setPos(x + 2.0 * dpr, height() / 2.0);
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label->setZValue(101);
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}
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void TankItem::setData(const struct dive *d, const struct divecomputer *dc, int plotStartTime, int plotEndTime)
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{
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// remove the old rectangles
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qDeleteAll(rects);
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rects.clear();
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if (!d || !dc)
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return;
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// We don't have enougth data to calculate things, quit.
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if (plotEndTime < 0 || plotEndTime <= plotStartTime)
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return;
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// Bail if there are no cylinders
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if (d->cylinders.empty())
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return;
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// start with the first gasmix and at the start of the plotted range
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// and work through all the gas changes and add the rectangle for each gas while it was used
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gasmix_loop loop(*d, *dc);
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struct gasmix next_gasmix = loop.at(plotStartTime).first;
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int next_startTime = plotStartTime;
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while (loop.has_next()) {
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auto [gasmix, time] = loop.next();
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createBar(next_startTime, time, next_gasmix);
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next_startTime = time;
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next_gasmix = gasmix;
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}
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createBar(next_startTime, plotEndTime, next_gasmix);
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}
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