Remove warning about item not on the scene.

This patch fixes a warning about the QGraphicsItems not being on the
QGraphicsScene, and thus, cannot be removed from it.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Remove warning about a null pixmap.

Since I didn't add a pixmap to be the background of the new profile, yet,
things got wrong on mac and crashed. This should fix it.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Added the Cylinder Pressure Axis

The cylinder pressure axis is the 'Y' axis for the Cylinder plot.
I positioned it in around 20% to 60% of the screen state.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add Information about the Pressure to the Model.

Added missing information about the pressure to the model; this shows that
I didn't do something right, as the model has 0 pressure information. Need
to fix that on the next commit.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Create a version of create_graph_info that doesn't depend on GC.

This version of the create plot info is the same as before, with the
difference that it doesn't depends on the gc.
Also fixed a crash.

The Pressure Index, Information and interpolated seems wrong,
I'm getting only zeroes.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add the gas pressure plot.

Added the Gas Pressure Graph with the related Model Changes
to access the cylinder index, pressure, interpolated pressure
and SAC.

The plot does not correctly plot its color right now but it's not hard to
do.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Plot the Temperature Text.

I Moved the 'plot text' method of the Old Graphics to the new
layout - this one was mostly unchanged as it was already good
as is.

And used the TemperatureProfileItem to also display texts.
This was the first implementation of the new system that uses
*less* code than the original one, wich makes me happy.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>