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794066b236
Instead of accessing the cylinder table directly, use the get_cylinder() function. This gives less unwieldy expressions. But more importantly, the function does bound checking. This is crucial for now as the code hasn't be properly audited since the change to arbitrarily sized cylinder tables. Accesses of invalid cylinder indexes may lead to silent data-corruption that is sometimes not even noticed by valgrind. Returning NULL instead of an invalid pointer will make debugging much easier. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#include "profile-widget/tankitem.h"
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#include "qt-models/diveplotdatamodel.h"
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#include "profile-widget/divetextitem.h"
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#include "core/profile.h"
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#include <QPen>
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static const qreal height = 3.0;
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TankItem::TankItem(QObject *parent) :
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QObject(parent),
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plotEndTime(-1)
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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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hAxis = nullptr;
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}
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void TankItem::setData(DivePlotDataModel *model, struct plot_info *plotInfo, struct dive *d)
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{
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// If there is nothing to plot, quit early.
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if (plotInfo->nr <= 0) {
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plotEndTime = -1;
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return;
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}
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// Find correct end of the dive plot for correct end of the tankbar.
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struct plot_data *last_entry = &plotInfo->entry[plotInfo->nr - 1];
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plotEndTime = last_entry->sec;
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// Stay informed of changes to the tanks.
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connect(model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), this, SLOT(modelDataChanged(QModelIndex, QModelIndex)), Qt::UniqueConnection);
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modelDataChanged();
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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(rect);
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label->setText(gasname(gas));
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label->setBrush(Qt::black);
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label->setPos(x + 1, 0);
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label->setAlignment(Qt::AlignBottom | Qt::AlignRight);
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#ifdef SUBSURFACE_MOBILE
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label->setPos(x + 1, -2.5);
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#endif
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label->setZValue(101);
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}
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void TankItem::modelDataChanged(const QModelIndex&, const QModelIndex&)
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{
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// We don't have enougth data to calculate things, quit.
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if (plotEndTime < 0)
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return;
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// remove the old rectangles
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qDeleteAll(rects);
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rects.clear();
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// Bail if there are no cylinders
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if (displayed_dive.cylinders.nr <= 0)
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return;
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// get the information directly from the displayed_dive (the dc always exists)
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struct divecomputer *dc = get_dive_dc(&displayed_dive, dc_number);
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// start with the first gasmix and at the start of the dive
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int cyl = explicit_first_cylinder(&displayed_dive, dc);
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struct gasmix gasmix = get_cylinder(&displayed_dive, cyl)->gasmix;
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int startTime = 0;
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// work through all the gas changes and add the rectangle for each gas while it was used
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const struct event *ev = get_next_event(dc->events, "gaschange");
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while (ev && (int)ev->time.seconds < plotEndTime) {
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createBar(startTime, ev->time.seconds, gasmix);
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startTime = ev->time.seconds;
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gasmix = get_gasmix_from_event(&displayed_dive, ev);
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ev = get_next_event(ev->next, "gaschange");
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}
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createBar(startTime, plotEndTime, gasmix);
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}
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void TankItem::setHorizontalAxis(DiveCartesianAxis *horizontal)
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{
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hAxis = horizontal;
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connect(hAxis, SIGNAL(sizeChanged()), this, SLOT(modelDataChanged()));
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modelDataChanged();
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}
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