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Up to now, we passed a "shiftPressed" flag to the individual
selection functions. To be more general replace by a struct
with "shift" and "ctrl" flags.
While doing this:
1) Move the struct into a new statsselection file for better
encapsulation.
2) Change shift to control in the scatter series, since individual
selection of items is usually done with control, not shift.
Shift usually means "select range".
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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In analogy to the other charts, highlight selected pie slices.
Overlay them with a checkerboard pattern, like in the bar charts.
Since all charts now support highlighting, the divesSelected()
virtual function now doesn't need a default implementation
anymore.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Allow the user to select regions of the scatter plot using
a rectangular selection. When shift is pressed, do an
incremental selection.
Unfortunately, the list-selection code is so slow that this
becomes unusable for a large number of selected dives.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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As a visual feedback, show the selected dives in the scatter
plot. React to application-wide selection changes. Currently,
the dive list is deactivated while in statistics mode, but
that may change.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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All series are converted to QSG. Thus, the pointer to the
QGraphicsView can be removed from the common base class.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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The series were passed a pointer to the QGraphicsScene to add
their item. In the future these items will be replaced by
QSGNodes. To add these, the series need a reference to the StatsView.
Therefore pass it in the constructor. Once everything is
replaces by QSGNodes, remove the QGraphicsScene member.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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It turns out that the wrong base class was used for the chart.
QQuickWidget can only be used on desktop, not in a mobile UI.
Therefore, turn this into a QQuickItem and move the container
QQuickWidget into desktop-only code.
Currently, this code is insane: The chart is rendered onto a
QGraphicsScene (as it was before), which is then rendered into
a QImage, which is transformed into a QSGTexture, which is then
projected onto the device. This is performed on every mouse
move event, since these events in general change the position
of the info-box.
The plan is to slowly convert elements such as the info-box into
QQuickItems. Browsing the QtQuick documentation, this will
not be much fun.
Also note that the rendering currently tears, flickers and has
antialiasing artifacts, most likely owing to integer (QImage)
to floating point (QGraphicsScene, QQuickItem) conversion
problems. The data flow is
QGraphicsScene (float) -> QImage (int) -> QQuickItem (float).
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Replace by custom implementation, with the ultimate goal to
remove the QtCharts module. This doesn't yet display axis
titles or a grid.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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In the future we want to use our own axis implementation to
convert from/to screen coordinates. For this purpose, we
need to save the axes with the series. Especially if we want
to support multiple series on different axes.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Add a interface class for the chart series used by the statistics
module. Abstract virtual functions are declared for replotting
and selecting items.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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Berthold Stoeger