PK cRBY' ' uitools-latest/index.html
Functions for working with threads in Qt applications. Usually for dealing with running in the main event loop (e.g. thread) or not.
These functions are known to work as reasonable replacements for the functions provided by both Maya and Nuke.
We want to be able to use these functions and have them present reasonable actions even if there is no event loop. In most cases, that means immediately calling the function.
Another large benefit of these functions is that they are re-rentrant, unlike the functions provided in either Maya or Nuke which will lock up the main thread if called from the main thread.
Call the given function in the main thread, but don’t wait for results.
If an exception is thrown, a traceback will be printed.
This function is re-entrant, and calling from the main thread will call the passed function immediately (discarding the result).
If Qt is not running, it will call the function immediately.
Call the given function in the main thread, and wait for results.
If an exception is thrown, it will be reraised here.
This function is re-entrant, and calling from the main thread will call the passed function immediately.
If Qt is not running, it will call the function immediately.
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Greenlet-based main-thread trampolining for UIs.
During the normal execution of a function, it will be running in the main thread. However, special functions (provided by this module) will allow for that function to be interrupted, leave the main thread, wait for some action, and then resume the function back in the main thread.
@trampoline.decorate(threads.call_in_main_thread)
def test_something(self):
# We are running in the main thread.
dialog = my_tool.run()
# Fall back out of the main event loop while we want for the following
# to become true.
button = trampoline.qpath(dialog, '//QPushButton[@enabled]', timeout=5)[0]
# Do something else in the main thread.
# Wait a second while letting the event loop resume.
trampoline.sleep(1)
Call a function in the main thread, allowing it to bounce into the background.
When called via trampoline a function’s main body will execute in the main thread. However, it is allowed to use bounce() (and functions which use bounce()) to effectively run synchronous tasks in the background while giving the main thread a chance to perform other tasks.
def my_func():
print 'Going to sleep (without locking up the main thread)...'
bounce(sleep, 10)
print 'Back!'
Parameters: |
|
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Decorate a function so that its body runs in the main thread as if called via trampoline().
Perform an effectively sychnorous call in the background from a trampolined function.
Parameters: |
|
---|---|
Returns: | The return value of func. |
Raises : | Anything that func raises. |
XPath-like query system, designed for axising Qt but usable elsewhere.
Differences from XPath:
Axis specifiers:
@abc -> self.abc
xyz -> child::xyz
. -> self
.. -> self.parent()
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All modules for which code is available