本文整理汇总了Python中AnyQt.QtWidgets.QGraphicsView.setBackgroundRole方法的典型用法代码示例。如果您正苦于以下问题：Python QGraphicsView.setBackgroundRole方法的具体用法？Python QGraphicsView.setBackgroundRole怎么用？Python QGraphicsView.setBackgroundRole使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AnyQt.QtWidgets.QGraphicsView的用法示例。
在下文中一共展示了QGraphicsView.setBackgroundRole方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: OWVennDiagram
# 需要导入模块: from AnyQt.QtWidgets import QGraphicsView [as 别名]
# 或者: from AnyQt.QtWidgets.QGraphicsView import setBackgroundRole [as 别名]
class OWVennDiagram(widget.OWWidget):
name = "Venn Diagram"
description = "A graphical visualization of the overlap of data instances " "from a collection of input data sets."
icon = "icons/VennDiagram.svg"
priority = 280
inputs = [("Data", Orange.data.Table, "setData", widget.Multiple)]
outputs = [("Selected Data", Orange.data.Table)]
# Selected disjoint subset indices
selection = settings.Setting([])
#: Stored input set hints
#: {(index, inputname, attributes): (selectedattrname, itemsettitle)}
#: The 'selectedattrname' can be None
inputhints = settings.Setting({})
#: Use identifier columns for instance matching
useidentifiers = settings.Setting(True)
#: Output unique items (one output row for every unique instance `key`)
#: or preserve all duplicates in the output.
output_duplicates = settings.Setting(False)
autocommit = settings.Setting(True)
graph_name = "scene"
def __init__(self):
super().__init__()
# Diagram update is in progress
self._updating = False
# Input update is in progress
self._inputUpdate = False
# All input tables have the same domain.
self.samedomain = True
# Input datasets in the order they were 'connected'.
self.data = OrderedDict()
# Extracted input item sets in the order they were 'connected'
self.itemsets = OrderedDict()
# GUI
box = gui.vBox(self.controlArea, "Info")
self.info = gui.widgetLabel(box, "No data on input.\n")
self.identifiersBox = gui.radioButtonsInBox(
self.controlArea,
self,
"useidentifiers",
[],
box="Data Instance Identifiers",
callback=self._on_useidentifiersChanged,
)
self.useequalityButton = gui.appendRadioButton(self.identifiersBox, "Use instance equality")
self.useidentifiersButton = rb = gui.appendRadioButton(self.identifiersBox, "Use identifiers")
self.inputsBox = gui.indentedBox(self.identifiersBox, sep=gui.checkButtonOffsetHint(rb))
self.inputsBox.setEnabled(bool(self.useidentifiers))
for i in range(5):
box = gui.vBox(self.inputsBox, "Data set #%i" % (i + 1), addSpace=False)
box.setFlat(True)
model = itemmodels.VariableListModel(parent=self)
cb = QComboBox(minimumContentsLength=12, sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLengthWithIcon)
cb.setModel(model)
cb.activated[int].connect(self._on_inputAttrActivated)
box.setEnabled(False)
# Store the combo in the box for later use.
box.combo_box = cb
box.layout().addWidget(cb)
gui.rubber(self.controlArea)
box = gui.vBox(self.controlArea, "Output")
gui.checkBox(box, self, "output_duplicates", "Output duplicates", callback=lambda: self.commit())
gui.auto_commit(box, self, "autocommit", "Send Selection", "Send Automatically", box=False)
# Main area view
self.scene = QGraphicsScene()
self.view = QGraphicsView(self.scene)
self.view.setRenderHint(QPainter.Antialiasing)
self.view.setBackgroundRole(QPalette.Window)
self.view.setFrameStyle(QGraphicsView.StyledPanel)
self.mainArea.layout().addWidget(self.view)
self.vennwidget = VennDiagram()
self.vennwidget.resize(400, 400)
self.vennwidget.itemTextEdited.connect(self._on_itemTextEdited)
self.scene.selectionChanged.connect(self._on_selectionChanged)
self.scene.addItem(self.vennwidget)
self.resize(self.controlArea.sizeHint().width() + 550, max(self.controlArea.sizeHint().height(), 550))
self._queue = []
@check_sql_input
def setData(self, data, key=None):
self.error()
if not self._inputUpdate:
# Store hints only on the first setData call.
self._storeHints()
self._inputUpdate = True
#.........这里部分代码省略.........