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Added the Temperature Graph.

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Added the Temperature Graph with its related classes. A Temperature Axis
is also created so the item is plotted on the right place.
Currently the Temperature Axis is just like the depth axis - top is
zero, wich means that the graph is inverted.

Also, the Temperature axis is being displayed as this helps debugging.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Tomaz Canabrava 2014-01-16 18:39:13 -02:00 • committed by Dirk Hohndel
parent 254beef5d4
commit 58aeb6ce40
6 changed files with 94 additions and 10 deletions
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37
qt-ui/profile/diveprofileitem.cpp
View file

@ -6,6 +6,7 @@
#include <QPen>
#include <QPainter>
#include <QLinearGradient>
#include <QDebug>
AbstractProfilePolygonItem::AbstractProfilePolygonItem(): QObject(), QGraphicsPolygonItem(),
hAxis(NULL), vAxis(NULL), dataModel(NULL), hDataColumn(-1), vDataColumn(-1)
@ -96,4 +97,38 @@ void DiveProfileItem::modelDataChanged(){
pat.setColorAt(1, getColor(DEPTH_BOTTOM));
pat.setColorAt(0, getColor(DEPTH_TOP));
setBrush(QBrush(pat));
}
}
DiveTemperatureItem::DiveTemperatureItem()
{
QPen pen;
pen.setBrush(QBrush(getColor(::TEMP_PLOT)));
pen.setCosmetic(true);
pen.setWidth(2);
setPen(pen);
}
void DiveTemperatureItem::modelDataChanged()
{
// We don't have enougth data to calculate things, quit.
if (!hAxis || !vAxis || !dataModel || hDataColumn == -1 || vDataColumn == -1)
return;
// Ignore empty values. things do not look good with '0' as temperature in kelvin...
QPolygonF poly;
for (int i = 0, modelDataCount = dataModel->rowCount(); i < modelDataCount; i++) {
qreal verticalValue = dataModel->index(i, vDataColumn).data().toReal();
if(!verticalValue)
continue;
qreal horizontalValue = dataModel->index(i, hDataColumn).data().toReal();
QPointF point( hAxis->posAtValue(horizontalValue), vAxis->posAtValue(verticalValue));
poly.append(point);
}
setPolygon(poly);
}
void DiveTemperatureItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
painter->setPen(pen());
painter->drawPolyline(polygon());
}