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Add initial support for a visual tracker of gas used

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This shows a color-coded bar at the bottom of the graph that corresponds
with the active gas.

Todo:
- text that explicitly states gas on the left edge of the bar
- better vertical positioning of the bar
- ability to turn this on and off

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2014-08-14 18:22:27 -06:00
parent 9015160199
commit fa3c18d83b
5 changed files with 144 additions and 0 deletions
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97
qt-ui/profile/tankitem.cpp Normal file
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#include "tankitem.h"
#include "diveplotdatamodel.h"
#include "profile.h"
#include <QGradient>
#include <QDebug>
TankItem::TankItem(QObject *parent) :
QGraphicsRectItem(),
dataModel(0),
dive(0),
pInfo(0)
{
}
void TankItem::setData(DivePlotDataModel *model, struct plot_info *plotInfo, struct dive *d)
{
pInfo = plotInfo;
dive = d;
dataModel = model;
connect(dataModel, SIGNAL(dataChanged(QModelIndex, QModelIndex)), this, SLOT(modelDataChanged(QModelIndex, QModelIndex)));
modelDataChanged();
}
void TankItem::modelDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
{
// We don't have enougth data to calculate things, quit.
if (!dive || !dataModel || !pInfo || !pInfo->nr)
return;
// remove the old rectangles
foreach (QGraphicsRectItem *r, rects) {
delete(r);
}
rects.clear();
// define the position on the profile
qreal width, left, yPos, height;
yPos = 95.0;
height = 3.0;
// set up the three patterns
QLinearGradient nitrox(QPointF(0, yPos), QPointF(0, yPos + height));
nitrox.setColorAt(0.0, Qt::green);
nitrox.setColorAt(0.49, Qt::green);
nitrox.setColorAt(0.5, Qt::yellow);
nitrox.setColorAt(1.0, Qt::yellow);
QLinearGradient trimix(QPointF(0, yPos), QPointF(0, yPos + height));
trimix.setColorAt(0.0, Qt::green);
trimix.setColorAt(0.49, Qt::green);
trimix.setColorAt(0.5, Qt::red);
trimix.setColorAt(1.0, Qt::red);
QColor air(Qt::blue);
air.lighter();
// walk the list and figure out which tanks go where
struct plot_data *entry = pInfo->entry;
int cylIdx = entry->cylinderindex;
int i = -1;
int startTime = 0;
struct gasmix *gas = &dive->cylinder[cylIdx].gasmix;
while (++i < pInfo->nr) {
entry = &pInfo->entry[i];
if (entry->cylinderindex == cylIdx)
continue;
width = hAxis->posAtValue(entry->sec) - hAxis->posAtValue(startTime);
left = hAxis->posAtValue(startTime);
QGraphicsRectItem *rect = new QGraphicsRectItem(left, yPos, width, height, this);
if (gasmix_is_air(gas))
rect->setBrush(air);
else if (gas->he.permille)
rect->setBrush(trimix);
else
rect->setBrush(nitrox);
rects << rect;
cylIdx = entry->cylinderindex;
gas = &dive->cylinder[cylIdx].gasmix;
startTime = entry->sec;
}
width = hAxis->posAtValue(entry->sec) - hAxis->posAtValue(startTime);
left = hAxis->posAtValue(startTime);
QGraphicsRectItem *rect = new QGraphicsRectItem(left, yPos, width, height, this);
if (gasmix_is_air(gas))
rect->setBrush(air);
else if (gas->he.permille)
rect->setBrush(trimix);
else
rect->setBrush(nitrox);
rects << rect;
}
void TankItem::setHorizontalAxis(DiveCartesianAxis *horizontal)
{
hAxis = horizontal;
connect(hAxis, SIGNAL(sizeChanged()), this, SLOT(modelDataChanged()));
modelDataChanged();
}