Fix several BUGS + rewrite Variable Window for perfect display [r885]

FIX BUG: App not closing when interpreter runs code in main loop

Close app as soon as the event loop is idle instead of using qApp->quit() to allow dispach of other events.
This prevent app to not closing properly in rare situations like:

• Interpreter is running a program
• Interpreter emit() a blocking function in Controller (using QWaitCondition or BlockingQueuedConnection).
• User request to close app while function is runnig in main loop. So, closeEvent is put in queue.
• Function ends and return control to Interpreter. Interpreter request to run another code in main loop using emit().
• Instead of running this code, the previous closeEvent() from queue is run.
• Using qApp->quit() this will block forever Interpreter (never return), so, i->wait() will never return.
  This is an old issue. It takes me a lot to manage it.

To see this bug, run code below in debug mode and close BASIC256 window while running:

for a=1 to 20
call ggg
next a
print msec
end

subroutine ggg()
dim b(100000)
end subroutine

FIX BUG: Variables destroyed while interpreter still running (SEGFAULT)

FIX BUG: Closing editors while interpreter still running (SEGFAULT)

FIX BUG: Crash in -a mode (SEGFAULT)

Variable window

Fix 1d 2d array display

Before:

• look at array1d, it is displayed as 2d array
• look at x array. It is displayed with wrong dimensions

After: perfect.

Fix array sort a[1], a[10], a[2]

The order in variable window it did not bother me before. But andrask is right.

Before: a[0], a[1], a[10], a[11]..a[19],a[2]

After: perfect order

Add ToolTip description for variable type in Variable window

Just hold the mouse over the type of variable (I, F, S...) for description.

Add REF type in Variable window

Fix value column sort by real content (true comparison)

Run this program and sort variables by value in variable window:

a=111
b=67.34
c=PI
d=-2
e=-10
f=-19
g=10
h=20
i=0
j=19
k=3
l=-9

Before: OMG

After:

Arrange by Level-Name

Before:

After:

Using user preferences to print numbers

If user changes preferences about printing numbers (number of digits, decimal point type etc.) the variable window will use the new settings.

Speed up Variable window

for f=0 to 1000
dim b(50,50)
next f
print msec

Result: 20056 ms vs. 36202 ms

for a=1 to 100
call ggg
next a
print msec
end

subroutine ggg()
dim b(10000)
end subroutine

Result: 6353 ms vs. 17380 ms

for a=1 to 100
dim b(10000)
b=0
next a
print msec

Result: 6517 ms vs. 17179 ms