Commit graph

1808 commits

Author SHA1 Message Date
Berthold Stoeger
ed8ad9ac80 desktop: query DivePlannerPointsModel for planner state
MainTab::updateDiveInfo() is not executed when in the planner.
To decide whether the application is in the planner state,
it queried the profile. Instead, query the DivePlannerPointsModel.

Currently, there is no autoritative carrier of that flag.
However, the MainTab has a dependency on DivePlannerPointsModel
anyway, and therefore this removes a dependency on the
profile. This brings us closer to a state where we can have
multiple profiles.

Ultimately, it is hoped that the whole check can be removed
at this place, making the point moot.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
b4c307c775 planner: set profile to planner state in main window
Remove mainwindow-access from the planner, by setting
the profile to planner state in the owner of the profile,
viz. the MainWindow.

The MainWindow sets the application state to planner, so
it seems legit that it also sets the profile state.

This removes a further interdependency.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
4d60662531 desktop: remove check for editMode in maintab
The accept / reject message is only shown in edit-mode, no
need to check it. This is a step in simplification / removal
of the edit mode.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
2789bb05b1 profile: display arbitrary dive
So far the profile operated on the global displayed_dive. Instead,
take the dive to be displayed as a parameter to the plotDive()
functions.

This is necessary if we want to have multiple concurrent
profile objects. Think for example for printing or for mobile
where multiple dive objects are active at the same time.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
1ec0790d50 planner: remove displayed_dive from DivePlannerModel
To remove global state, make the dive that DivePlannerModel
works on a member variable. Pass the dive in createSimpleDive()
and loadFromDive(). Moreover, this should pave the way to more
fine-grained undo in the planner. Ultimately, the planner
should not be modal.

Attention: for now, the dive must still be displayed_dive,
because of the convoluted way in which the profile and the
planner work on the same dive.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
e419ebf55a planner: move clearing of model into loadFromDive() function
Both loadFromDive() callers were clearing the model before
calling loadFromDive(). Move the clearing into that function
since it makes no sense to load into a non-cleared model.

Apparently this changes the way that no-cylinder dives are
treated and the code in ProfileWidget2::repositionDiveHandlers()
must now explicitly check for that condition.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
b9673df60b profile: pass DivePlannerPointsModel at construction time
This model is only needed when in plan mode. To enable multiple
profilewidgets at the same time (e.g. for the mobile app or
for printing), make the pointer to DivePlannerPointsModel a
member variable that is initialized at construction time.

Moreover, allow passing null as the DivePlannerPointsModel,
in which case planning will be disabled. This will be useful
for simple printing.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
d68c3d8ab5 cleanup: add DivePlannerPointsModel::addDefaultStop() function
When clicking on "+" in the planner, a default stop point was
added using a signal/slot connection. This used the archaic
string-based connect syntax, because it was realized with
default parameters passed to "addStop()". Instead, add a
"addDefaultStop()" slot, which passes the default parameters.
Since all other callers do not use callbacks, unslotify
"addStop()". The slot was the only user of the default parameters,
so they can be removed alltogether.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 13:53:23 -07:00
Berthold Stoeger
8cd389c0af printing: use sensible font-size in profiles
The font-size in printed profiles is based on the size of the profile
in the main window. This makes no sense. Why should changing the
window size change the font-size on printouts?

Matter of fact, when making shrinking the height of the window to
its minimum, comical printouts are obtained (font way too big).

Therefore use an arbitrary rule: Say that profiles 600 pixels high
look reasonable and then scale up to the actual size on the printout.

This may need some tweaking for high-DPI mode. But that seems not
to be supported on desktop anyway?

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-04-02 08:22:00 -07:00
Berthold Stoeger
f299fa37f9 stats: fix visibility check of the statistics tab on desktop
Apparently, the visibility flag of the view is not inherited
from the statistics widget. Therefore, the statistics is
redrawn on every action even if not visible.

Set the visibility explicitly in the show- and hide-events.

This is crazy.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-03-31 13:41:39 +02:00
Berthold Stoeger
5b3cb5898f desktop: fold ApplicationState into MainWindow
The application state is a desktop-only thing. The mobile UI
also has its application state, but that is something completely
different.

The last remaining user of the application state was to flag
whether the planner is active. Since this has all been
unglobalized, the ApplicationState structure can be moved
from core to the desktop UI. And there it can be made local
to the MainWindow class.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-17 07:26:55 -08:00
Berthold Stoeger
42cff9b3a5 planner: pass in_planner down to TemplateLayout
The TemplateLayout prints different dives depending on
whether the planner is active. Instead of accessing a
global variable, pass the status down from the MainWindow.
That's all quite convoluted, since there are multiple
layers involved.

On the positive side, the in_planner() function has now
no users an can be removed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-17 07:26:55 -08:00
Berthold Stoeger
18049bc8d0 cleanup: remove unused includes in mainwindow.cpp
The printing code moved elsewhere, so these includes are not
needed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-17 07:26:55 -08:00
Berthold Stoeger
5a8d7617ce statistics: implement primitive "restrict to selection" feature
Allow the user to restrict the analyzed dives based on the
current selection. One button restricts to the current selection
and one button resets the restriction.

Thus, the user can for example select bars in the bar chart
or a range in the scatter plot and perform statistics on
these sets.

The restriction works on top of the filter.

The UI can certainly be improved, but it is a start.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-13 13:02:54 -08:00
Berthold Stoeger
622e9ba373 printing: "fix" progress indicator
In TemplateLayout, there was a progress indication, which reported
the progress - not of the actual rendering - but of adding the
dives to the "to render" list. Which is of course done in less than
a ms, making the whole thing completely pointless.

Instead, emit progress when actually looping over the dives or
statistics.

Nobody ever noticed the problem because even rendering is done in
fractions of a second and indeed is accounted to only one fifth
of the total progress.

The real purpose of this "fix" is to get rid of the getTotalWork()
function, which was just insane. Instead of asking the TemplateLayout
how many dives it rendered, this number was extracted from
global state. Simply store the number of dives in the TemplateLayout
object instead.

Moreover, fix two coding style issues:
 - "Page" variable identifier starting with a capital
 - The Printer::render() being defined (as opposed to declared) with
   a default parameter. This is not how C++'s default parameters work,
   sorry.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-13 12:20:25 -08:00
Berthold Stoeger
646aead629 desktop: disable animation when selecting multiple dives
Selecting many dives when the animation was active
was increadibly slow, so disable it.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-10 14:33:15 -08:00
Berthold Stoeger
f1203d365a desktop: improve splitter defaults
On first startup, use the splitter values suggested by Dirk:
Top/Bottom: 60/40
Info/Profile: 50/50
List/Map: 60/40

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
0b0e6672d5 profile: detect dive-mode change in profile
The profile must be replotted when the dive mode changes.
Weirdly, this was routed via the dive-information tab
(making it inherently non-mobile compatible). Detect
such a change directly in the profile.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
aefbde93ce desktop: be smarter about filling splitters
On state change, the splitters were completely emptied and
refilled. Instead try to reuse already existing splitter
slots. This reduces annoying flickering.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
c584e28f2e desktop: don't access profile directly to redraw it
The MainWindow has a function to replot the profile. Use that
instead of accessing the profile directly.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
64dae43bdd desktop: do own memory management of quadrant widgets
The memory management of the quadrant widgets is a total mess:
When setting the widget, the QSplitters take ownership, which
means that they will delete the widget in their destructor.

This is inherently incompatible with singletons, which must
not be deleted.

To avoid all these troubles, remove the widgets from the
QSplitters in the desctructor of the MainWindow. This of
course means that we now have to take care about deletion
of the widgets.

For local widgets use std::unique_ptr, for singletons use
a static variable that is deleted on application exit.

Sadly, for the map widget we can't use a normal singleton,
because the QML MapWidget's memory management is buggy.
Add a comment in the source code explaining this.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
8a36a100ce desktop: don't allow view change in planner
When in planner mode, don't allow the user to change the application
state. This brought us nothing but troubles and inconsistencies.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
1ed2f1681a desktop: remove the view-state
There was the "application state", which decided what to show
in the "quadrants" and the "view state" which decided which
quadrant to show. These interacted in a hard-to-grasp way.

The "view state" is used to show the map or dive list in
full screen.

I simply couldn't get these two orthogonal states to interact
properly. Moreover the thing was buggy: If a quadrant was hidden,
the user could still show it, by dragging from the side of the
window, at least under KDE.

To solve these woes, merge the two states into a single
application state. If the widget of a quadrant is set to null,
don't show it. So the four "view states" are now "application
states" where three of the four quadrants are not shown.

This also changes the memory management of the widgets:
widgets that are not shown are now removed from the QSplitter
objects. This makes it possible that the same widget is
shown in *different* quadrants.

While writing this, I stumbled upon a Qt bug, which is known
since 2014:
https://forum.qt.io/topic/43176/qsplitter-sizes-return-0

When restoring the quadrant sizes there was a test whether
the quadrant size is 0. If that was the case, a default size
was set. This seems not to work if the widgets were recently
added. Since this test now always fails, make the quadrants
non-collapsible and thus guarantee that 0 is never saved as
a size.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-06 10:00:39 -08:00
Berthold Stoeger
764aa6c512 planner: remove DivePlannerPointsModel::startTimeChanged signal
The way the starting time of a new plan was set was bonkers:

1) PlannerWidgets::planDive() invokes DivePlannerPointsModel::
   createSimpleDive().

2) createSimpleDive() calls DivePlannerPointsModel::
   setupStartTime()

3) setupStartTime() emits a signal startTimeChanged()

4) startTimeChanged is caught by PlannerWidget and sets
   the UI field

5) change of the UI field emits a timeChanged() signal which
   is connected to DivePlannerPointsModel::setStartTime()

6) setStartTime() sets the time of the plan and displayed_dive
   and emits dataChanged()

7) dataChanged() replots the dive()

8) Back in DivePlannerPointsModel::createSimpleDive() the diveplan
   start time is overwritten with displayed_dive (the value are
   equal owing to 6)

Wow!

But it gets worse:

9) The initial dive plan is set up in createSimpleDive().

Since the profile is drawn in 7) after clearing the displayed_dive
and before constructing the initial plan, the profile is shown
on a dive without samples. It therefore generates a dummy profile.

To make this somewhat less insane, remove the startTimeChanged()
signal in 3), explicitly set the start time of plan and dive to
the one calculated by setupStartTime() and explicitly set the UI
filed in the plannerWidget.

This still indirectly draws the profile via signals in a convoluted
way, but at it straightens out things somewhat. Most importantly,
the profile doesn't have to generate a fake DC.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-20 10:01:50 -08:00
Berthold Stoeger
ff536e98fc statistics: don't replot chart when changing features
Up to now, when the user changed the visibility of chart features
(legend, quartiles, labels, etc.) the whole chart was replot.
Instead, only change the visibility status of these items.

After all, this modularity is one of the things the conversion
to QSG was all about.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-20 08:47:18 +01:00
Berthold Stoeger
9b7565e81a statistics: turn ChartGrid into QSGNodes
Turn the background grid into QSGNodes. Each grid line is
represented by a QSG line item. An alternative would be
drawing the grid into a QImage and blasting that onto the
screen. It is unclear which one is preferred.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-20 08:47:18 +01:00
Doug Junkins
31e26fd144 mobile: add GF fields for ceiling calculation
Adds fields to the advanced preferences page to modify GFLow and GFHigh for
the Buhlmann decompression model for calculating ceilings. Updated preferences
code to set the Buhlmann parameters in core/deco.c when the GF prefs are
updated.

Signed-off-by: Doug Junkins <douglas.junkins@gmail.com>
2021-01-19 12:34:46 -08:00
Berthold Stoeger
32ec9a8726 undo: remove invalidate_dive_cache call from MainTab
When creating the RenumberDive undo command, the MainTab
would manually call invalidate_dive_cache(). However, this
is done on undo/redo, therefore the call can (should) be
removed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-11 08:42:17 -08:00
Berthold Stoeger
7819683990 profile: remove ProfileWidget2::dateTimeChanged()
This function sent a signal and the only listener was removed
in the previous commit.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-10 15:57:39 -08:00
Berthold Stoeger
e7907c494f statistics: convert chart to QQuickItem
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>
2021-01-10 15:16:52 -08:00
Dirk Hohndel
d63910caa3 desktop/update-check: fix logic when to ask about update check
Checking a field that we intentionally don't store to disk is obviously
wrong. It's been this way for a long time and it has annoyed me many
times, but somehow I never spent the time to track down why this was
happening.

It makes much more sense to use the presence of either the don't check
flag or a next check date as an indication that we have already asked
this question.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-06 10:18:23 -08:00
Dirk Hohndel
fabeb71ade desktop/UI: move statistics to View menu
It seems to make more sense to have it there with the 'Yearly Statistics'
and not in the Log menu. Interestingly enough, both locations were clearly
considered when first adding this in commit 106f7a8e0e ("desktop: add
statistics widget dummy and application state") as you can tell by the
never implemented actionViewStats.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-06 10:11:31 -08:00
Dirk Hohndel
2305ecc877 dekstop/UI: remove duplicate resource
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-06 10:11:31 -08:00
Dirk Hohndel
19828510d9 desktop/UI: add shortcut for 'Open cloud storage'
This seems like a logical extension of the shortcuts we already have.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-06 10:11:31 -08:00
Dirk Hohndel
77bc0c7c93 desktop: rename Statistics tab to Summary
We now have three different things that are kinda like statistics:
- the summary tab (reasonably useful when looking at selected dives)
- the yearly statistics (Ctrl/CMD-Y)
- the full statistics (Ctrl/CMD-T)

I'd argue that's at least one too many. But I'm sure some people will disagree.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-03 13:56:25 -08:00
Berthold Stoeger
7b0455b4d8 statistics: reverse chart selection logic
The old ways was to select the chart first, then depending on
the chart choose the binning.

Willem says that it should work the other way round: select
the binning (or operation) and make the charts depend on
that.

I'm not arguing one way or the other, just note that the new
way is much more tricky, because it is easy to get unsupported
combinations. For example, there is no chart where the
first variable is unbinned, but the second axis is binned
or has an operation. This makes things distinctly more tricky
and this code still needs a thorough audit.

Since this is all more tricky, implement a "invalid" chart
state. Ideally that should be never shown to the user, but
let's try to be defensive.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-03 13:41:15 -08:00
Berthold Stoeger
106f7a8e0e desktop: add statistics widget dummy and application state
Add a new "statistics" application state. In the statistics state
show the statistics widget and the filter in the top quadrants.
The idea is to allow filtering and doing statistics at the same
time.

Sadly, we can't use the filter-widget in different quadrants,
because Qt's ownership model is completely broken / inflexible.
It does not support a widget having different parents and
thus a widget can only belong to one QStackedWidget.

Hiding the map in the statistics view is quite hacky:
Since the view of the quadrants is not determined by the
"ApplicationState", we have to restore the original quadrant
visibility when exiting the stats mode. Therefore, set the
original visibility-state when changing application state.

The MainWindow-quadrant code really needs to be rewritten!

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-03 13:41:15 -08:00
Berthold Stoeger
165dce4a0e statistics: implement a statistics widget on desktop
Implement a widget that shows the statistics state as comboboxes
and the statistics chart. Calls into the statistics code if any
of the comboboxes changes.

The hardest part here is the formatting of the charts list with
its icons and with headings. Sadly, it is not trivial to arrange
icons horizontally. Therefore we would have to fully reimplement
the ComboBox view, which is probably not fun.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-03 13:41:15 -08:00
Berthold Stoeger
e943065977 cleanup: remove "GpsLocation *locationProvider" from MainWindow
This is mobile only and not used on desktop.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-01 12:38:50 -08:00
Berthold Stoeger
bbbd4c8818 cleanup: remove getDivesInTrip() in qthelper.cpp
This function was not used anywhere. Moreover, remove a few
unused includes from qthelper.h. Surprisingly, a number of users
of qthelper.h depend on these, so readd them at the appropriate
places.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-29 08:34:09 -08:00
Berthold Stoeger
cc5ebd7414 printing: remove CylinderObjectHelper
With the removal of grantlee, this became pointless glue
code. Call the formatting functions directly.

Since the printing code was the only user of CylinderObjectHelper,
remove the whole thing.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
ae182c386b printing: remove DiveObjectHelper from printing code
At this point (post grantlee), DiveObjectHelper is just pointless
glue code. Let's remove it from the printing code and call the
formatting functions directly. If necessary, move these functions
to core/string-format.cpp.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
d9942269a9 printing: remove DiveObjectHelperGrantlee
This was a weird helper object, needed for grantlee. Instead
of storing this object, loop over cylinders and dives directly.

The actual accessor function is unchanged and now generates
a DiveObjectHelper or DiveCylinderHelper for every variable
access. Obviously, this is very inefficient. However, this
will be replaced in future commits by direct calls to formatting
functions.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
dc37ba7758 cleanup: remove QPointer instances
QPointer is a strange "smart" pointer class, which resets itself
when the pointed-to QObject is deleted. It does this by listening
to the corresponding signal and therefore is surprisingly heavy
for a plain pointer. A cynic would say that the existence of
QPointer is an expression of Qt's broken ownership model.

In any case, QPointer was only used at two places, were it was
100% useless: As a parameter to a function and as a locally scoped
pointer. It only makes sense if
a) there is a chance that the object disappears during the pointer's
   lifetime and
b) it is actually checked for null before use
None of which was the case here. Remove.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
fa6eb6144b printing: move #includes from headers to source files
To decrease include-file interdependencies.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
2239ffe13c printing: remove YearInfo structure
This is a wrapper around "stats *" used to pass statistics
through Qt's weird metatype system. Not needed anymore.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
0310eb31da printing: refactor if and loop code
The loop code was buggy: the current position was only increased
inside when executing the loop once. This would obviously fail
for empty lists. Moreover, the whole thing was quite difficult
to reason about, since a reference to the current position was
passed down in the call hierarchy.

Instead, pass from and to values to the parse function and
create a generic function that can search for the end of
loop and if blocks. This function handles nested if and for
loops.

The if-code now formats the block only if the condition is true.
The old code would format the block and throw it away if not
needed.

This should now provide better diagnostics for mismatched tags.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
f42a70586b printing: remove objects QVariant map
An artifact from the old grantlee code: the whole parser state
was kept in an untyped QVariant map. One case was particularly
bizarre: the options were a class member and yet added to the
weird map.

Replace this by a strongly typed state structure. Ultimately,
this will allow us to replace the "dive object helper".

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
0cbb448740 cleanup: make templateOptions and printOptions reference types
These two structs describe options used during printing.
They are passed through numerous classes as pointer. In this
case, reference semantics are preferred, as references:
 - can never be null
 - can not change during their lifetime
This not only helps the compiler, as it can optimize away null
checks, but also your fellow coder. Moreover, it prevents
unintentional creation of uninitialized references: one can't
create an instance of a class without initializing a reference
member. It does not prevent references from going dangling.
However, pointers have the same disadvantage.

Contains a few whitespace cleanups.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-17 13:03:56 -08:00
Berthold Stoeger
8d93192537 cleanup: remove MainWindow::stateBeforeEdit member
The last user was removed in accf1fcc8f.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-12-13 11:50:56 -08:00