- The not-publicly documented setContent() method does all the
parenting and resizing needed; some of this isn't available
from outside of the widget either.
The QML slideshow now sizes and re-sizes correctly.
- Load QML on startup, compile async
- Create QML component when the page is reached.
- On leave, stop the slideshow (otherwise, e.g. timers will keep running)
This should move some of the delay from loading a large
slideshow forward as the engine is already initialized when
we reach the install / slideshow page.
- The static destructor issues a warning on exit:
QBasicTimer::start: QBasicTimer can only be used with threads
started with QThread
so instead, heap-allocate the model. This leaks memory, but
it's a singleton *and* we're exiting anyway.
- after model resets, restore what was previously selected.
- This avoids having an **empty** combobox, SEE #1141 but does
not actually set it back to the value the user had previously
picked (e.g. changing swap settings **still** breaks the
selection).
- d78bc0c5 added an early `return false` when cancel is disabled,
before checking if we were at the last step; so last-step
didn't get any special handling.
- refactor so that last-step now gets special handling first,
**then** disable-cancel handling, and then the usual case.
- Avoid races which might double-delete the timer, or enter
the if twice (which would lead to duplicate emissions of
requirementsComplete and the associated UI glitches).
If the requirements checking is **really fast**, e.g. you don't
have a check for internet connectivity, then the checks
might be done as fast as the 0-timeout single-shot timer,
which means that finished() is called once by the QFutureWatcher,
and then after that by the QTimer .. leading to two messages
"All requirements have been checked", but also twice
requirementsComplete being emitted, so you end up with two
results lists being added by the CheckerContainer.
Stop that by using the results-progress timer as an additional
flag: the first time everything is complete, delete that timer
and set the pointer back to nullptr.
- In debug mode, hitting assert(false) is meaningless,
- In release mode, the assert is optimized out.
- So assert the condition we're actually testing, for better messages.
- It's ok to use path / filenames in images, but you can also
use icon names according to the FDO icon spec. This makes
sense for at least *productLogo*, possibly *productIcon*, but
not really for *productWelcome*.
- Using next and back buttons calls onActivate() on the view step
that you end up on.
- The first view step to be shown, though, doesn't get an onActivate()
(unless you go, say, next and then back).
- Explicitly call onActivate() on the first view step once they're
all loaded.
FIXES#1156