Implement a bar series, which can plot stacked, grouped and single
bar charts in horizontal or vertical ways. On hovering over a
bar, an information is shown. The shown information depends on
whether the chart is count or value based, or is a multi-bin
chart.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
When the user hovers over features in the chart, they should
be presented with more information. For example in bar charts
on the dives the bar represents and the exact value that the
bar represents, etc.
The InformationBox is a simple QGraphicsWidget, which can be
placed on top of QCharts and can show a number of arbitrary
text lines.
When placing the box on the chart, the code attempts to stay
inside the plot area of the chart.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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>
Implement five kinds of axes:
- ValueAxis: a standard axis for plotting numerical linear data.
- CountAxis: a ValueAxis for plotting counts of dives.
- CategoryAxis: an axis for plotting discrete variables without
any notion of distance.
- HistogramAxis: an axis for plotting bins with a numeric value.
- DateAxis: a HistogramAxis that formats dates.
The axes derive from a common virtual base class that defines
a small interface, notably, returning the minimum and maximum
displayed value and redrawing the axis.
The mapping and painting is performed by QtCharts' axes. On
the one hand, using QtCharts turned out to be too inflexible.
On the other hand it allowed us to quickly prototype the charts.
Ultimately, we should do our own drawing of the axis.
As a testament to the inflexibility, QtCharts' axes do not
allow for repeated labels is needed for quarter-based date
charts (year, Q2, Q3, Q4, year, Q2, Q3, ...). Therefore the
code disambiguates labels by adding unicode zero-width spaces.
Wonderful.
When omitting labels due to space reasons, the histogram
axis attempts to show "preferred" labels. In the quarter
example above, it tries to show full years.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
z-values determine the order in which objects on the chart are
painted. To reduce chaos, collect all z-values in a header file.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
These were declared in pref.h and defined in subsurfacestartup.c.
pref.c didn't even exist. Create it and move preferences-related
structs and functions there.
setup_system_prefs() is left in subsurfacestartup.c, since it
works with environment variables.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The function is declared in core/unit.h, therefore it seems logical
to define it in the corresponding source file.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The user preferences can never end up with PASCAL pressure
units. The only place that uses these units is the XML parser.
Therefore, remove the PASCAL case in get_pressure_units().
This will remove an unused translation string.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The way I understand, the PASCAL pressure unit is used to parse
obscure dive logs. However, there is no support in the UI for
using Pa as pressure unit. Therefore remove reading / writing
this unit to git divelogs.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
For some chart (e.g. pie charts or stacked bar charts), we want
to display a legend. QtCharts' legend interface happens to be
private and therefore is of no use.
This introduces a legend box which is implemented using
QGraphicItems, which can be placed on top of QCharts. It's very
unfancy, but works for now. If there are too many items, not
all are shown. Currently, the legend is configured to fill
at most half of the width and half of the height of the chart.
This might need some optimization.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Add a source file and a header file, which implement the color
scheme used by the statistics module.
Besides a few color constants, the centerpiece is a
function that returns the color representing a bin and
an appropriate label color. It picks a roughly equi-distant
set of colors out of an already balanced set of 50 candidate
colors. And it also picks white as text color when adding a
label to a segment with a dark color.
The color list was created using a tool by Gregor Aisch that
is available on GitHub as https://github.com/gka/palettes to
create multi-hued, multi-stop color scales that are safe for
color blind people.
This commit contains code from three authors.
Dirk (main author): adaptive color scheme.
Willem: Colors of single-bin charts and lines.
Berthold: Infrastructure.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The StatisticVariable class hierarchy encapsulates the concept
of a dive-variable, which can be plotted in charts either as
dependend or independend variable.
There are three types of these variables:
1) discrete: For example dive buddies or suit type.
2) continuous: Has a notion of linear metric - can be
used as histogram or scatter plot axis.
3) numeric: Like continuous, but allows for operations
such as calculating the mean or the sum over numerous
dives.
All variables support binning. The bins are defined per
variable.
Continuous variables can be converted into an arbitrary
double value, which is used to be plotted on a continuous
axis.
Moreover, numeric variables support a number of operations,
which depend on the variable.
Since binning is based on different types, the code is rather
template-heavy. Of course, this could be solved with
unions/variants and runtime-polymorphism, but using templates
was just much quicker. Notably, this uses the CRTP
(curiously recurring template pattern) where a subclass
passes itself as argument to the baseclass. This is a weird
kind of "reverse inheritance".
The StatsTranslations class is a dummy class which will
be used to collect all translations of the statistics
module.
This includes changes by Dirk to fix compilation of the
downloader.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The get_*_unit() functions return the unit-name as set in
the preferences. Add versions with a "metric" parameter.
This will be used by the statistics code, which may in
the future allow for binning with alternative units.
All the unit-formatting functions should probably be moved
away from qthelper to their own source file.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This was only used by the filter, but will also be used
by the statistics module. To avoid duplicate translation
strings, move to a common place.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The start-selection widget will need icons with a transparent
background so that the icons don't stick out like a sore thumb.
So far the icons rendered by this function were only used by
the images on the profile and were perfectly rectangular.
Therefore there was no need for this.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Create a gastype enum, which describes the type of a gas.
For now: air, nitrox, normoxic, trimix and oxygen.
This probably should be made configurable.
The gas types will be used to bin gasses in the statistics
module.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The renderIcon() function was used by the thumbnailer to
render SVG-based icons. Move it to the global qthelper.cpp
so that it can also be used by the statistics module.
Add "SVG" to the name to emphasize what it is used for.
For consistency also move the renderSVGIconWidth() function,
which renders to a fixed width, to qthelper.cpp
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Using the y coordinate of the component directly doesn't work if we use
the component inside other components. Instead we need to grab the
position relative to the flickable.
The comment about needing the function for this to work seemed dubious.
So for now I've removed that function and am setting the position
directly.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Doing this check every time we get a 'pressed' signal for the input
field seems excessive. We really only need to check when the input field
gets focus - that's when the OS virtual keyboard might open and hide the
field the user wants to edit.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
It's entirely reasonable to use the component in a context where we
don't have a flickable. Simply don't try to reposition things in that
case.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This reuses the logic we implemented in the SsrfTextField.
Eventually we will need to clean up the inconsistent names for these
elements.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
By removing focus from all input fields we can ensure that we have the
correct data reflected when saving an edited dive.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Instead of always showing info about the location, allow all data to be
captured in a more structured format - but only when the app is in
verbose mode.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
There's no point in doing that - we set the correct text and leave that
in the editText and displayText for the combo box. If the user uses the
drop down they can replace that. This works correctly for single people,
and for multiple people the drop down doesn't work at all, anyway.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
When we start editing a dive the OS will open the virtual keyboard if
any of the input fields have focus (which they might get when we set
their content).
The explicit closing of the keyboard might be overkill, but also doesn't
appear to hurt.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
On macOS the cmake build system doesn't copy the QML resources into the app
bundle and so we do that manually. I forgot to add that for QtCharts.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Trying to keep the different build environments consistent I messed up and
dropped wget and curl from the Coverity build. Moving them to the beginning of
the list so they stand out more.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Contrary to the Launchpad builds, OBS isn't actually using the spec file that
is included in the Subsurface source but instead maintains its own.
So this is just updating to the version that has been tracked over there,
mostly for reference.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
There are just so many places where I need to remember to update the package
lists. Turns out I had forgotten to add libmtp to the Linux builds when we
add the Garmin Descent mk2 support...
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
We now require qmake to be found much earlier in the script so we can simply
use that to get the right prefix path.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
