def __delitem__(self, key):
"""
Delete the setting for key. If key is a group remove the
whole group.
.. note:: defaults cannot be deleted they are instead reverted
to their original state.
"""
if key not in self:
raise KeyError(key)
if self.isgroup(key):
group = self.group(key)
for key in group:
del group[key]
else:
fullkey = self.__key(key)
oldValue = self.get(key)
if self.__store.contains(fullkey):
self.__store.remove(fullkey)
newValue = None
if fullkey in self.__defaults:
newValue = self.__defaults[fullkey].default_value
etype = SettingChangedEvent.SettingChanged
else:
etype = SettingChangedEvent.SettingRemoved
QCoreApplication.sendEvent(
self, SettingChangedEvent(etype, key, newValue, oldValue)
)
def test_methodinvoke(self):
executor = ThreadExecutor()
state = [None, None]
class StateSetter(QObject):
@Slot(object)
def set_state(self, value):
state[0] = value
state[1] = QThread.currentThread()
def func(callback):
callback(QThread.currentThread())
obj = StateSetter()
f1 = executor.submit(func, methodinvoke(obj, "set_state", (object,)))
f1.result()
# So invoked method can be called
QCoreApplication.processEvents()
self.assertIs(state[1], QThread.currentThread(),
"set_state was called from the wrong thread")
self.assertIsNot(state[0], QThread.currentThread(),
"set_state was invoked in the main thread")
executor.shutdown(wait=True)
def mousePressEvent(self, event):
anchor_item = self.scene.item_at(event.scenePos(),
items.NodeAnchorItem,
buttons=Qt.LeftButton)
if anchor_item and event.button() == Qt.LeftButton:
# Start a new link starting at item
self.from_item = anchor_item.parentNodeItem()
if isinstance(anchor_item, items.SourceAnchorItem):
self.direction = NewLinkAction.FROM_SOURCE
self.source_item = self.from_item
else:
self.direction = NewLinkAction.FROM_SINK
self.sink_item = self.from_item
event.accept()
helpevent = QuickHelpTipEvent(
self.tr("Create a new link"),
self.
tr('<h3>Create new link</h3>'
'<p>Drag a link to an existing node or release on '
'an empty spot to create a new node.</p>'
'<p>Hold Shift when releasing the mouse button to '
'edit connections.</p>'
# '<a href="help://orange-canvas/create-new-links">'
# 'More ...</a>'
))
QCoreApplication.postEvent(self.document, helpevent)
return True
else:
# Whoever put us in charge did not know what he was doing.
self.cancel(self.ErrorReason)
return False
def add_link(self, link):
# type: (SchemeLink) -> None
"""
Add a `link` to the scheme.
Parameters
----------
link : :class:`.SchemeLink`
An initialized link instance to add to the scheme.
"""
assert isinstance(link, SchemeLink)
self.check_connect(link)
self.__links.append(link)
ev = events.LinkEvent(events.LinkEvent.LinkAdded, link)
QCoreApplication.sendEvent(self, ev)
log.info("Added link %r (%r) -> %r (%r) to scheme %r." % \
(link.source_node.title, link.source_channel.name,
link.sink_node.title, link.sink_channel.name,
self.title)
)
self.link_added.emit(link)
def __setitem__(self, key, value):
"""
Set the setting for key.
"""
if not isinstance(key, str):
raise TypeError(key)
fullkey = self.__key(key)
value_type = None
if fullkey in self.__defaults:
value_type = self.__defaults[fullkey].value_type
if not isinstance(value, value_type):
if not isinstance(value, value_type):
raise TypeError("Expected {0!r} got {1!r}".format(
value_type.__name__,
type(value).__name__)
)
if key in self:
oldValue = self.get(key)
etype = SettingChangedEvent.SettingChanged
else:
oldValue = None
etype = SettingChangedEvent.SettingAdded
self.__setValue(fullkey, value, value_type)
QCoreApplication.sendEvent(
self, SettingChangedEvent(etype, key, value, oldValue)
)
def _QTest_qWaitForWindowActive(widget, timeout=1000):
# A Qt5 compatible (probably) QTest.qWaitForWindowActive(QWidget, int)
# (mostly copied from qtestsystem.h in qt5/qtbase)
from AnyQt.QtCore import \
Qt, QCoreApplication, QEventLoop, QElapsedTimer, QEvent
window = widget.window()
timer = QElapsedTimer()
timer.start()
while not window.isActiveWindow():
remaining = timeout - timer.elapsed()
if remaining <= 0:
break
QCoreApplication.processEvents(QEventLoop.AllEvents, remaining)
QCoreApplication.sendPostedEvents(None, QEvent.DeferredDelete)
QTest.qSleep(10)
# See the explanation in qtestsystem.h
if window.isActiveWindow():
wait_no = 0
while window.pos().isNull():
if wait_no > timeout // 10:
break
wait_no += 1
QTest.qWait(10)
return window.isActiveWindow()
def end(self):
self.cleanup()
# Remove the help tip set in mousePressEvent
self.macro = None
helpevent = QuickHelpTipEvent("", "")
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.end(self)
def test_methodinvoke(self):
executor = ThreadExecutor()
state = [None, None]
class StateSetter(QObject):
@Slot(object)
def set_state(self, value):
state[0] = value
state[1] = QThread.currentThread()
def func(callback):
callback(QThread.currentThread())
obj = StateSetter()
f1 = executor.submit(func, methodinvoke(obj, "set_state", (object, )))
f1.result()
# So invoked method can be called
QCoreApplication.processEvents()
self.assertIs(state[1], QThread.currentThread(),
"set_state was called from the wrong thread")
self.assertIsNot(state[0], QThread.currentThread(),
"set_state was invoked in the main thread")
executor.shutdown(wait=True)
def end(self):
self.cleanup()
# Remove the help tip set in mousePressEvent
self.macro = None
helpevent = QuickHelpTipEvent("", "")
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.end(self)
def add_link(self, link):
"""
Add a `link` to the scheme.
Parameters
----------
link : :class:`.SchemeLink`
An initialized link instance to add to the scheme.
"""
check_type(link, SchemeLink)
self.check_connect(link)
self.__links.append(link)
ev = events.LinkEvent(events.LinkEvent.LinkAdded, link)
QCoreApplication.sendEvent(self, ev)
log.info("Added link %r (%r) -> %r (%r) to scheme %r." % \
(link.source_node.title, link.source_channel.name,
link.sink_node.title, link.sink_channel.name,
self.title)
)
self.link_added.emit(link)
def __setitem__(self, key, value):
"""
Set the setting for key.
"""
if not isinstance(key, str):
raise TypeError(key)
fullkey = self.__key(key)
if fullkey in self.__defaults:
value_type = self.__defaults[fullkey].value_type
if not isinstance(value, value_type):
if not isinstance(value, value_type):
raise TypeError("Expected {0!r} got {1!r}".format(
value_type.__name__,
type(value).__name__)
)
if key in self:
oldValue = self.get(key)
etype = SettingChangedEvent.SettingChanged
else:
oldValue = None
etype = SettingChangedEvent.SettingAdded
self.__store.setValue(fullkey, value)
QCoreApplication.sendEvent(
self, SettingChangedEvent(etype, key, value, oldValue)
)
def __delitem__(self, key):
"""
Delete the setting for key. If key is a group remove the
whole group.
.. note:: defaults cannot be deleted they are instead reverted
to their original state.
"""
if key not in self:
raise KeyError(key)
if self.isgroup(key):
group = self.group(key)
for key in group:
del group[key]
else:
fullkey = self.__key(key)
oldValue = self.get(key)
if self.__store.contains(fullkey):
self.__store.remove(fullkey)
newValue = None
if fullkey in self.__defaults:
newValue = self.__defaults[fullkey].default_value
etype = SettingChangedEvent.SettingChanged
else:
etype = SettingChangedEvent.SettingRemoved
QCoreApplication.sendEvent(
self, SettingChangedEvent(etype, key, newValue, oldValue)
)
def mousePressEvent(self, event):
anchor_item = self.scene.item_at(event.scenePos(),
items.NodeAnchorItem,
buttons=Qt.LeftButton)
if anchor_item and event.button() == Qt.LeftButton:
# Start a new link starting at item
self.from_item = anchor_item.parentNodeItem()
if isinstance(anchor_item, items.SourceAnchorItem):
self.direction = NewLinkAction.FROM_SOURCE
self.source_item = self.from_item
else:
self.direction = NewLinkAction.FROM_SINK
self.sink_item = self.from_item
event.accept()
helpevent = QuickHelpTipEvent(
self.tr("Create a new link"),
self.tr('<h3>Create new link</h3>'
'<p>Drag a link to an existing node or release on '
'an empty spot to create a new node.</p>'
'<p>Hold Shift when releasing the mouse button to '
'edit connections.</p>'
# '<a href="help://orange-canvas/create-new-links">'
# 'More ...</a>'
)
)
QCoreApplication.postEvent(self.document, helpevent)
return True
else:
# Whoever put us in charge did not know what he was doing.
self.cancel(self.ErrorReason)
return False
def viewportEvent(self, event: QEvent) -> bool:
if event.type() == QEvent.Wheel:
# delegate wheel events to parent StickyGraphicsView
parent = self.parent().parent().parent()
if isinstance(parent, StickyGraphicsView):
QCoreApplication.sendEvent(parent.viewport(), event)
if event.isAccepted():
return True
return super().viewportEvent(event)
class CoreAppTestCase(unittest.TestCase):
def setUp(self):
self.app = QCoreApplication.instance()
if self.app is None:
self.app = QCoreApplication([])
def tearDown(self):
self.app.processEvents()
del self.app
class CoreAppTestCase(unittest.TestCase):
def setUp(self):
self.app = QCoreApplication.instance()
if self.app is None:
self.app = QCoreApplication([])
def tearDown(self):
self.app.processEvents()
del self.app
class TestTask(unittest.TestCase):
def setUp(self):
self.app = QCoreApplication([])
def test_task(self):
results = []
task = Task(function=QThread.currentThread)
task.resultReady.connect(results.append)
task.start()
self.app.processEvents()
self.assertSequenceEqual(results, [QThread.currentThread()])
results = []
thread = QThread()
thread.start()
task = Task(function=QThread.currentThread)
task.moveToThread(thread)
self.assertIsNot(task.thread(), QThread.currentThread())
self.assertIs(task.thread(), thread)
task.resultReady.connect(results.append, Qt.DirectConnection)
task.start()
f = task.future()
self.assertIsNot(f.result(3), QThread.currentThread())
self.assertIs(f.result(3), results[-1])
def test_executor(self):
executor = ThreadExecutor()
f = executor.submit(QThread.currentThread)
self.assertIsNot(f.result(3), QThread.currentThread())
f = executor.submit(lambda: 1 / 0)
with self.assertRaises(ZeroDivisionError):
f.result()
results = []
task = Task(function=QThread.currentThread)
task.resultReady.connect(results.append, Qt.DirectConnection)
f = executor.submit(task)
self.assertIsNot(f.result(3), QThread.currentThread())
executor.shutdown()
class TestTask(unittest.TestCase):
def setUp(self):
self.app = QCoreApplication([])
def test_task(self):
results = []
task = Task(function=QThread.currentThread)
task.resultReady.connect(results.append)
task.start()
self.app.processEvents()
self.assertSequenceEqual(results, [QThread.currentThread()])
results = []
thread = QThread()
thread.start()
task = Task(function=QThread.currentThread)
task.moveToThread(thread)
self.assertIsNot(task.thread(), QThread.currentThread())
self.assertIs(task.thread(), thread)
task.resultReady.connect(results.append, Qt.DirectConnection)
task.start()
f = task.future()
self.assertIsNot(f.result(3), QThread.currentThread())
self.assertIs(f.result(3), results[-1])
def test_executor(self):
executor = ThreadExecutor()
f = executor.submit(QThread.currentThread)
self.assertIsNot(f.result(3), QThread.currentThread())
f = executor.submit(lambda: 1 / 0)
with self.assertRaises(ZeroDivisionError):
f.result()
results = []
task = Task(function=QThread.currentThread)
task.resultReady.connect(results.append, Qt.DirectConnection)
f = executor.submit_task(task)
self.assertIsNot(f.result(3), QThread.currentThread())
executor.shutdown()
def contextMenu(widget: QWidget, pos: QPoint, delay=-1) -> None:
"""
Simulates a contextMenuEvent on the widget.
"""
ev = QContextMenuEvent(QContextMenuEvent.Mouse, pos,
widget.mapToGlobal(pos))
if delay > 0:
QTest.qWait(delay)
QCoreApplication.sendEvent(widget, ev)
def _stateChanged(self, future, state):
"""
The `future` state has changed (called by :class:`Future`).
"""
ev = StateChangedEvent(state)
if self.thread() is QThread.currentThread():
QCoreApplication.sendEvent(self, ev)
else:
QCoreApplication.postEvent(self, ev)
def _stateChanged(self, future, state):
"""
The `future` state has changed (called by :class:`Future`).
"""
ev = StateChangedEvent(state)
if self.thread() is QThread.currentThread():
QCoreApplication.sendEvent(self, ev)
else:
QCoreApplication.postEvent(self, ev)
def __add_widget_for_node(self, node):
# type: (SchemeNode) -> None
item = self.__item_for_node.get(node)
if item is not None:
return
if node not in self.__workflow.nodes:
return
if node in self.__init_queue:
self.__init_queue.remove(node)
item = Item(node, None, -1)
# Insert on the node -> item mapping.
self.__item_for_node[node] = item
log.debug("Creating widget for node %s", node)
try:
w = self.create_widget_for_node(node)
except Exception: # pylint: disable=broad-except
log.critical("", exc_info=True)
lines = traceback.format_exception(*sys.exc_info())
text = "".join(lines)
errorwidget = QLabel(
textInteractionFlags=Qt.TextSelectableByMouse, wordWrap=True,
objectName="widgetmanager-error-placeholder",
text="<pre>" + escape(text) + "</pre>"
)
item.errorwidget = errorwidget
node.set_state_message(UserMessage(text, UserMessage.Error, 0))
return
else:
item.widget = w
self.__item_for_widget[w] = item
self.__set_float_on_top_flag(w)
w.installEventFilter(self.__activation_monitor)
# Up shortcut (activate/open parent)
up_shortcut = QShortcut(
QKeySequence(Qt.ControlModifier + Qt.Key_Up), w)
up_shortcut.activated.connect(self.__on_activate_parent)
# send all the post creation notification events
workflow = self.__workflow
assert workflow is not None
inputs = workflow.find_links(sink_node=node)
for link in inputs:
ev = LinkEvent(LinkEvent.InputLinkAdded, link)
QCoreApplication.sendEvent(w, ev)
outputs = workflow.find_links(source_node=node)
for link in outputs:
ev = LinkEvent(LinkEvent.OutputLinkAdded, link)
QCoreApplication.sendEvent(w, ev)
self.widget_for_node_added.emit(node, w)
def set_runtime_env(self, key, value):
# type: (str, Any) -> None
"""
Set a runtime environment variable `key` to `value`
"""
oldvalue = self.__env.get(key, None)
if value != oldvalue:
self.__env[key] = value
QCoreApplication.sendEvent(
self, WorkflowEnvChanged(key, value, oldvalue))
self.runtime_env_changed.emit(key, value, oldvalue)
def end(self):
self.down_pos = None
self.arrow_item = None
self.annotation = None
self.document.view().setCursor(Qt.ArrowCursor)
# Clear the help tip
helpevent = QuickHelpTipEvent("", "")
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.end(self)
def end(self):
self.down_pos = None
self.arrow_item = None
self.annotation = None
self.document.view().setCursor(Qt.ArrowCursor)
# Clear the help tip
helpevent = QuickHelpTipEvent("", "")
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.end(self)
def remove_annotation(self, annotation):
# type: (BaseSchemeAnnotation) -> None
"""
Remove the `annotation` instance from the scheme.
"""
index = self.__annotations.index(annotation)
self.__annotations.pop(index)
ev = AnnotationEvent(AnnotationEvent.AnnotationRemoved, annotation,
index)
QCoreApplication.sendEvent(self, ev)
self.annotation_removed.emit(annotation)
def test_threadsafe(self):
output = OutputView()
output.resize(500, 300)
output.show()
blue_formater = output.formated(color=Qt.blue)
red_formater = output.formated(color=Qt.red)
correct = []
def check_thread(*args):
correct.append(QThread.currentThread() == self.app.thread())
blue = TextStream()
blue.stream.connect(blue_formater.write)
blue.stream.connect(check_thread)
red = TextStream()
red.stream.connect(red_formater.write)
red.stream.connect(check_thread)
def printer(i):
if i % 12 == 0:
fizzbuz = "fizzbuz"
elif i % 4 == 0:
fizzbuz = "buz"
elif i % 3 == 0:
fizzbuz = "fizz"
else:
fizzbuz = str(i)
if i % 2:
writer = blue
else:
writer = red
writer.write("Greetings from thread {0}. "
"This is {1}\n".format(current_thread().name,
fizzbuz))
pool = multiprocessing.pool.ThreadPool(100)
res = pool.map_async(printer, range(10000))
self.app.exec_()
res.wait()
# force all pending enqueued emits
QCoreApplication.sendPostedEvents(blue, QEvent.MetaCall)
QCoreApplication.sendPostedEvents(red, QEvent.MetaCall)
self.app.processEvents()
self.assertTrue(all(correct))
self.assertEqual(len(correct), 10000)
def remove_annotation(self, annotation):
# type: (BaseSchemeAnnotation) -> None
"""
Remove the `annotation` instance from the scheme.
"""
self.__annotations.remove(annotation)
ev = events.AnnotationEvent(events.AnnotationEvent.AnnotationRemoved,
annotation)
QCoreApplication.sendEvent(self, ev)
self.annotation_removed.emit(annotation)
def __on_link_removed(self, link): # type: (SchemeLink) -> None
assert link.source_node in self.__workflow.nodes
assert link.sink_node in self.__workflow.nodes
source = self.__item_for_widget.get(link.source_node)
sink = self.__item_for_widget.get(link.sink_node)
# notify the node gui of an removed link
if source is not None:
ev = LinkEvent(LinkEvent.OutputLinkRemoved, link)
QCoreApplication.sendEvent(source.widget, ev)
if sink is not None:
ev = LinkEvent(LinkEvent.InputLinkRemoved, link)
QCoreApplication.sendEvent(sink.widget, ev)
def test_threadsafe(self):
output = OutputView()
output.resize(500, 300)
output.show()
blue_formater = output.formatted(color=Qt.blue)
red_formater = output.formatted(color=Qt.red)
correct = []
def check_thread(*args):
correct.append(QThread.currentThread() == self.app.thread())
blue = TextStream()
blue.stream.connect(blue_formater.write)
blue.stream.connect(check_thread)
red = TextStream()
red.stream.connect(red_formater.write)
red.stream.connect(check_thread)
def printer(i):
if i % 12 == 0:
fizzbuz = "fizzbuz"
elif i % 4 == 0:
fizzbuz = "buz"
elif i % 3 == 0:
fizzbuz = "fizz"
else:
fizzbuz = str(i)
if i % 2:
writer = blue
else:
writer = red
writer.write("Greetings from thread {0}. "
"This is {1}\n".format(current_thread().name,
fizzbuz))
pool = multiprocessing.pool.ThreadPool(100)
res = pool.map_async(printer, range(10000))
self.qWait()
res.wait()
# force all pending enqueued emits
QCoreApplication.sendPostedEvents(blue, QEvent.MetaCall)
QCoreApplication.sendPostedEvents(red, QEvent.MetaCall)
self.app.processEvents()
self.assertTrue(all(correct))
self.assertEqual(len(correct), 10000)
pool.close()
def flush(self):
"""
Flush all pending signal emits currently enqueued.
Must only ever be called from the thread this object lives in
(:func:`QObject.thread()`).
"""
if QThread.currentThread() is not self.thread():
raise RuntimeError("`flush()` called from a wrong thread.")
# NOTE: QEvent.MetaCall is the event implementing the
# `Qt.QueuedConnection` method invocation.
QCoreApplication.sendPostedEvents(self, QEvent.MetaCall)
def flush(self):
"""
Flush all pending signal emits currently enqueued.
Must only ever be called from the thread this object lives in
(:func:`QObject.thread()`).
"""
if QThread.currentThread() is not self.thread():
raise RuntimeError("`flush()` called from a wrong thread.")
# NOTE: QEvent.MetaCall is the event implementing the
# `Qt.QueuedConnection` method invocation.
QCoreApplication.sendPostedEvents(self, QEvent.MetaCall)
def remove_annotation(self, annotation):
"""
Remove the `annotation` instance from the scheme.
"""
check_arg(annotation in self.__annotations,
"Annotation is not in the scheme.")
self.__annotations.remove(annotation)
ev = events.AnnotationEvent(events.AnnotationEvent.AnnotationRemoved,
annotation)
QCoreApplication.sendEvent(self, ev)
self.annotation_removed.emit(annotation)
def remove_annotation(self, annotation):
"""
Remove the `annotation` instance from the scheme.
"""
check_arg(annotation in self.__annotations,
"Annotation is not in the scheme.")
self.__annotations.remove(annotation)
ev = events.AnnotationEvent(events.AnnotationEvent.AnnotationRemoved,
annotation)
QCoreApplication.sendEvent(self, ev)
self.annotation_removed.emit(annotation)
def __on_link_removed(self, link): # type: (SchemeLink) -> None
assert self.__workflow is not None
assert link.source_node in self.__workflow.nodes
assert link.sink_node in self.__workflow.nodes
source = self.__item_for_node.get(link.source_node)
sink = self.__item_for_node.get(link.sink_node)
# notify the node gui of an removed link
if source is not None and source.widget is not None:
ev = LinkEvent(LinkEvent.OutputLinkRemoved, link)
QCoreApplication.sendEvent(source.widget, ev)
if sink is not None and sink.widget is not None:
ev = LinkEvent(LinkEvent.InputLinkRemoved, link)
QCoreApplication.sendEvent(sink.widget, ev)
def on_done(f):
assert f is future
selfref = selfweakref()
if selfref is None:
return
try:
QCoreApplication.postEvent(
selfref, QEvent(FutureWatcher.__FutureDone))
except RuntimeError:
# Ignore RuntimeErrors (when C++ side of QObject is deleted)
# (? Use QObject.destroyed and remove the done callback ?)
pass
def start(self):
self.document.view().setCursor(Qt.CrossCursor)
helpevent = QuickHelpTipEvent(
self.tr("Click and drag to create a new arrow"),
self.tr('<h3>New arrow annotation</h3>'
'<p>Click and drag to create a new arrow annotation.</p>'
# '<a href="help://orange-canvas/arrow-annotations>'
# 'More ...</a>'
)
)
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.start(self)
def insert_annotation(self, index: int, annotation: Annotation) -> None:
"""
Insert `annotation` into `self.annotations` at the specified
position `index`.
"""
assert isinstance(annotation, BaseSchemeAnnotation)
if annotation in self.__annotations:
raise ValueError("Cannot add the same annotation multiple times")
self.__annotations.insert(index, annotation)
ev = AnnotationEvent(AnnotationEvent.AnnotationAdded, annotation,
index)
QCoreApplication.sendEvent(self, ev)
self.annotation_inserted.emit(index, annotation)
self.annotation_added.emit(annotation)
def insert_node(self, index: int, node: Node):
"""
Insert `node` into self.nodes at the specified position `index`
"""
assert isinstance(node, SchemeNode)
check_arg(node not in self.__nodes, "Node already in scheme.")
self.__nodes.insert(index, node)
ev = NodeEvent(NodeEvent.NodeAdded, node, index)
QCoreApplication.sendEvent(self, ev)
log.info("Added node %r to scheme %r." % (node.title, self.title))
self.node_added.emit(node)
self.node_inserted.emit(index, node)
def on_done(f):
assert f is future
selfref = selfweakref()
if selfref is None:
return
try:
QCoreApplication.postEvent(selfref,
QEvent(FutureWatcher.__FutureDone))
except RuntimeError:
# Ignore RuntimeErrors (when C++ side of QObject is deleted)
# (? Use QObject.destroyed and remove the done callback ?)
pass
def add_annotation(self, annotation):
# type: (BaseSchemeAnnotation) -> None
"""
Add an annotation (:class:`BaseSchemeAnnotation` subclass) instance
to the scheme.
"""
assert isinstance(annotation, BaseSchemeAnnotation)
if annotation in self.__annotations:
raise ValueError("Cannot add the same annotation multiple times")
self.__annotations.append(annotation)
ev = events.AnnotationEvent(events.AnnotationEvent.AnnotationAdded,
annotation)
QCoreApplication.sendEvent(self, ev)
self.annotation_added.emit(annotation)
def _QTest_qWait(timeout):
from AnyQt.QtCore import Qt, QCoreApplication, QEvent, QEventLoop, QDeadlineTimer
remaining = timeout
deadline = QDeadlineTimer(remaining, Qt.PreciseTimer)
while True:
QCoreApplication.processEvents(QEventLoop.AllEvents, remaining)
QCoreApplication.sendPostedEvents(None, QEvent.DeferredDelete)
remaining = deadline.remainingTime()
if remaining <= 0:
break
QTest.qSleep(min(10, remaining))
remaining = deadline.remainingTime()
if remaining <= 0:
break
def start(self):
self.document.view().setCursor(Qt.CrossCursor)
helpevent = QuickHelpTipEvent(
self.tr("Click and drag to create a new arrow"),
self.
tr('<h3>New arrow annotation</h3>'
'<p>Click and drag to create a new arrow annotation.</p>'
# '<a href="help://orange-canvas/arrow-annotations>'
# 'More ...</a>'
))
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.start(self)
def start(self):
self.document.view().setCursor(Qt.CrossCursor)
helpevent = QuickHelpTipEvent(
self.tr("单击并拖动，创建新的箭头"),
self.
tr('<h3>新建箭头批注</h3>'
'<p>单击并拖动，创建新的箭头批注。</p>'
# '<a href="help://orange-canvas/arrow-annotations>'
#'More ...</a>'
))
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.start(self)
def start(self):
self.document.view().setCursor(Qt.CrossCursor)
helpevent = QuickHelpTipEvent(
self.tr("单击此处，创建新的文本批注"),
self.
tr('<h3>新建文本批注</h3>'
'<p>在画布上单击（并拖动以调整大小），创建新的文本注释项。</p>'
# '<a href="help://orange-canvas/text-annotations">'
# 'More ...</a>'
))
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.start(self)
def end(self):
if self.control is not None:
self.scene.removeItem(self.control)
self.control = None
self.down_pos = None
self.annotation_item = None
self.annotation = None
self.document.view().setCursor(Qt.ArrowCursor)
# Clear the help tip
helpevent = QuickHelpTipEvent("", "")
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.end(self)
def end(self):
if self.control is not None:
self.scene.removeItem(self.control)
self.control = None
self.down_pos = None
self.annotation_item = None
self.annotation = None
self.document.view().setCursor(Qt.ArrowCursor)
# Clear the help tip
helpevent = QuickHelpTipEvent("", "")
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.end(self)
def start(self):
self.document.view().setCursor(Qt.CrossCursor)
helpevent = QuickHelpTipEvent(
self.tr("Click to create a new text annotation"),
self.
tr('<h3>New text annotation</h3>'
'<p>Click (and drag to resize) on the canvas to create '
'a new text annotation item.</p>'
# '<a href="help://orange-canvas/text-annotations">'
# 'More ...</a>'
))
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.start(self)
def add_annotation(self, annotation):
"""
Add an annotation (:class:`BaseSchemeAnnotation` subclass) instance
to the scheme.
"""
check_arg(annotation not in self.__annotations,
"Cannot add the same annotation multiple times.")
check_type(annotation, BaseSchemeAnnotation)
self.__annotations.append(annotation)
ev = events.AnnotationEvent(events.AnnotationEvent.AnnotationAdded,
annotation)
QCoreApplication.sendEvent(self, ev)
self.annotation_added.emit(annotation)
def start(self):
self.document.view().setCursor(Qt.CrossCursor)
helpevent = QuickHelpTipEvent(
self.tr("Click to create a new text annotation"),
self.tr('<h3>New text annotation</h3>'
'<p>Click (and drag to resize) on the canvas to create '
'a new text annotation item.</p>'
# '<a href="help://orange-canvas/text-annotations">'
# 'More ...</a>'
)
)
QCoreApplication.postEvent(self.document, helpevent)
UserInteraction.start(self)
def splash_screen():
"""
"""
pm = QPixmap(
pkg_resources.resource_filename(
__name__, "icons/orange-splash-screen.png")
)
version = QCoreApplication.applicationVersion()
size = 21 if len(version) < 5 else 16
font = QFont("Helvetica")
font.setPixelSize(size)
font.setBold(True)
font.setItalic(True)
font.setLetterSpacing(QFont.AbsoluteSpacing, 2)
metrics = QFontMetrics(font)
br = metrics.boundingRect(version).adjusted(-5, 0, 5, 0)
br.moveCenter(QPoint(436, 224))
p = QPainter(pm)
p.setRenderHint(QPainter.Antialiasing)
p.setRenderHint(QPainter.TextAntialiasing)
p.setFont(font)
p.setPen(QColor("#231F20"))
p.drawText(br, Qt.AlignCenter, version)
p.end()
return pm, QRect(88, 193, 200, 20)
def __on_help_request(self):
"""
Help shortcut was pressed. We send a `QWhatsThisClickedEvent` to
the scheme and hope someone responds to it.
"""
# Sender is the QShortcut, and parent the OWBaseWidget
widget = self.sender().parent()
try:
node = self.node_for_widget(widget)
except KeyError:
pass
else:
qualified_name = node.description.qualified_name
help_url = "help://search?" + urlencode({"id": qualified_name})
event = QWhatsThisClickedEvent(help_url)
QCoreApplication.sendEvent(self.scheme(), event)
def process_signals_for_widget(self, node, widget, signals):
"""
Process new signals for the OWBaseWidget.
"""
# This replaces the old OWBaseWidget.processSignals method
if sip.isdeleted(widget):
log.critical("Widget %r was deleted. Cannot process signals",
widget)
return
app = QCoreApplication.instance()
for signal in signals:
link = signal.link
value = signal.value
# Check and update the dynamic link state
if link.is_dynamic():
link.dynamic_enabled = can_enable_dynamic(link, value)
if not link.dynamic_enabled:
# Send None instead
value = None
handler = link.sink_channel.handler
if handler.startswith("self."):
handler = handler.split(".", 1)[1]
handler = getattr(widget, handler)
if link.sink_channel.single:
args = (value,)
else:
args = (value, signal.id)
log.debug("Process signals: calling %s.%s (from %s with id:%s)",
type(widget).__name__, handler.__name__, link, signal.id)
app.setOverrideCursor(Qt.WaitCursor)
try:
handler(*args)
except Exception:
sys.excepthook(*sys.exc_info())
log.exception("Error calling '%s' of '%s'",
handler.__name__, node.title)
finally:
app.restoreOverrideCursor()
app.setOverrideCursor(Qt.WaitCursor)
try:
widget.handleNewSignals()
except Exception:
sys.excepthook(*sys.exc_info())
log.exception("Error calling 'handleNewSignals()' of '%s'",
node.title)
finally:
app.restoreOverrideCursor()
def __call__(self, exc_type, exc_value, tb):
if self._stream:
header = exc_type.__name__ + ' Exception'
if QThread.currentThread() != QCoreApplication.instance().thread():
header += " (in non-GUI thread)"
text = traceback.format_exception(exc_type, exc_value, tb)
text.insert(0, '{:-^79}\n'.format(' ' + header + ' '))
text.append('-' * 79 + '\n')
self._stream.writelines(text)
self.handledException.emit((exc_type, exc_value, tb))
def cache_dir():
"""
Return the application cache directory. If the directory path
does not yet exists then create it.
"""
init()
cachedir = QStandardPaths.writableLocation(QStandardPaths.CacheLocation)
version = QCoreApplication.applicationVersion()
cachedir = os.path.join(cachedir, version)
if not os.path.exists(cachedir):
os.makedirs(cachedir)
return cachedir
def add_node(self, node):
"""
Add a node to the scheme. An error is raised if the node is
already in the scheme.
Parameters
----------
node : :class:`.SchemeNode`
Node instance to add to the scheme.
"""
check_arg(node not in self.__nodes,
"Node already in scheme.")
check_type(node, SchemeNode)
self.__nodes.append(node)
ev = events.NodeEvent(events.NodeEvent.NodeAdded, node)
QCoreApplication.sendEvent(self, ev)
log.info("Added node %r to scheme %r." % (node.title, self.title))
self.node_added.emit(node)
def add_default_slot(self, default):
"""
Add a default slot to the settings This also replaces any
previously set value for the key.
"""
value = default.default_value
oldValue = None
etype = SettingChangedEvent.SettingAdded
key = default.key
if key in self:
oldValue = self.get(key)
etype = SettingChangedEvent.SettingChanged
if not self.isdefault(key):
# Replacing a default value.
self.__store.remove(self.__key(key))
self.__defaults[key] = default
event = SettingChangedEvent(etype, key, value, oldValue)
QCoreApplication.sendEvent(self, event)
def remove_node(self, node):
"""
Remove a `node` from the scheme. All links into and out of the
`node` are also removed. If the node in not in the scheme an error
is raised.
Parameters
----------
node : :class:`.SchemeNode`
Node instance to remove.
"""
check_arg(node in self.__nodes,
"Node is not in the scheme.")
self.__remove_node_links(node)
self.__nodes.remove(node)
ev = events.NodeEvent(events.NodeEvent.NodeRemoved, node)
QCoreApplication.sendEvent(self, ev)
log.info("Removed node %r from scheme %r." % (node.title, self.title))
self.node_removed.emit(node)
return node
def remove_link(self, link):
"""
Remove a link from the scheme.
Parameters
----------
link : :class:`.SchemeLink`
Link instance to remove.
"""
check_arg(link in self.__links,
"Link is not in the scheme.")
self.__links.remove(link)
ev = events.LinkEvent(events.LinkEvent.LinkRemoved, link)
QCoreApplication.sendEvent(self, ev)
log.info("Removed link %r (%r) -> %r (%r) from scheme %r." % \
(link.source_node.title, link.source_channel.name,
link.sink_node.title, link.sink_channel.name,
self.title)
)
self.link_removed.emit(link)
def log_dir():
"""
Return the application log directory.
"""
init()
if sys.platform == "darwin":
name = str(QCoreApplication.applicationName())
logdir = os.path.join(os.path.expanduser("~/Library/Logs"), name)
else:
logdir = data_dir()
if not os.path.exists(logdir):
os.makedirs(logdir)
return logdir