def test_getViewWidget():
view = pg.PlotWidget()
vref = weakref.ref(view)
item = pg.InfiniteLine()
view.addItem(item)
assert item.getViewWidget() is view
del view
gc.collect()
assert vref() is None
assert item.getViewWidget() is None
def test_getViewWidget_deleted():
view = pg.PlotWidget()
item = pg.InfiniteLine()
view.addItem(item)
assert item.getViewWidget() is view
# Arrange to have Qt automatically delete the view widget
obj = pg.QtGui.QWidget()
view.setParent(obj)
del obj
gc.collect()
assert not pg.Qt.isQObjectAlive(view)
assert item.getViewWidget() is None
def test_InfiniteLine():
# Test basic InfiniteLine API
plt = pg.plot()
plt.setXRange(-10, 10)
plt.setYRange(-10, 10)
plt.resize(600, 600)
# seemingly arbitrary requirements; might need longer wait time for some platforms..
QtTest.QTest.qWaitForWindowShown(plt)
QtTest.QTest.qWait(100)
vline = plt.addLine(x=1)
assert vline.angle == 90
br = vline.mapToView(QtGui.QPolygonF(vline.boundingRect()))
assert br.containsPoint(pg.Point(1, 5), QtCore.Qt.OddEvenFill)
assert not br.containsPoint(pg.Point(5, 0), QtCore.Qt.OddEvenFill)
hline = plt.addLine(y=0)
assert hline.angle == 0
assert hline.boundingRect().contains(pg.Point(5, 0))
assert not hline.boundingRect().contains(pg.Point(0, 5))
vline.setValue(2)
assert vline.value() == 2
vline.setPos(pg.Point(4, -5))
assert vline.value() == 4
oline = pg.InfiniteLine(angle=30)
plt.addItem(oline)
oline.setPos(pg.Point(1, -1))
assert oline.angle == 30
assert oline.pos() == pg.Point(1, -1)
assert oline.value() == [1, -1]
# test bounding rect for oblique line
br = oline.mapToScene(oline.boundingRect())
pos = oline.mapToScene(pg.Point(2, 0))
assert br.containsPoint(pos, QtCore.Qt.OddEvenFill)
px = pg.Point(-0.5, -1.0 / 3**0.5)
assert br.containsPoint(pos + 5 * px, QtCore.Qt.OddEvenFill)
assert not br.containsPoint(pos + 7 * px, QtCore.Qt.OddEvenFill)