QGraphicsGridLayout ¶

QGraphicsGridLayout 类提供在图形视图管理 Widget 的栅格。更多 …

概要 ¶

函数 ¶

def addItem (item, row, column, rowSpan, columnSpan[, alignment=Qt.Alignment()])
def addItem (item, row, column[, alignment=Qt.Alignment()])
def alignment (item)
def columnAlignment (column)
def columnCount ()
def columnMaximumWidth (column)
def columnMinimumWidth (column)
def columnPreferredWidth (column)
def columnSpacing (column)
def columnStretchFactor (column)
def horizontalSpacing ()
def itemAt (row, column)
def removeItem (item)
def rowAlignment (row)
def rowCount ()
def rowMaximumHeight (row)
def rowMinimumHeight (row)
def rowPreferredHeight (row)
def rowSpacing (row)
def rowStretchFactor (row)
def setAlignment (item, alignment)
def setColumnAlignment (column, alignment)
def setColumnFixedWidth (column, width)
def setColumnMaximumWidth (column, width)
def setColumnMinimumWidth (column, width)
def setColumnPreferredWidth (column, width)
def setColumnSpacing (column, spacing)
def setColumnStretchFactor (column, stretch)
def setHorizontalSpacing (spacing)
def setRowAlignment (row, alignment)
def setRowFixedHeight (row, height)
def setRowMaximumHeight (row, height)
def setRowMinimumHeight (row, height)
def setRowPreferredHeight (row, height)
def setRowSpacing (row, spacing)
def setRowStretchFactor (row, stretch)
def setSpacing (spacing)
def setVerticalSpacing (spacing)
def verticalSpacing ()

详细描述 ¶

The most common way to use QGraphicsGridLayout is to construct an object on the heap with no parent, add widgets and layouts by calling addItem() , and finally assign the layout to a widget by calling setLayout() . QGraphicsGridLayout automatically computes the dimensions of the grid as you add items.
scene = QGraphicsScene()
textEdit = scene.addWidget(QTextEdit())
pushButton = scene.addWidget(QPushButton())
layout = QGraphicsGridLayout()
layout.addItem(textEdit, 0, 0)
layout.addItem(pushButton, 0, 1)
form = QGraphicsWidget()
form.setLayout(layout)
scene.addItem(form)
											
The layout takes ownership of the items. In some cases when the layout item also inherits from QGraphicsItem (譬如 QGraphicsWidget ) there will be a ambiguity in ownership because the layout item belongs to two ownership hierarchies. See the documentation of setOwnedByLayout() how to handle this. You can access each item in the layout by calling count() and itemAt() 。调用 removeAt() will remove an item from the layout, without destroying it.

在 QGraphicsGridLayout 中的尺寸提示和尺寸策略 ¶

QGraphicsGridLayout respects each item’s size hints and size policies, and when a cell in the grid has more space than the items can fill, each item is arranged according to the layout’s alignment for that item. You can set an alignment for each item by calling setAlignment() , and check the alignment for any item by calling alignment() . You can also set the alignment for an entire row or column by calling setRowAlignment() and setColumnAlignment() respectively. By default, items are aligned to the top left.

另请参阅

QGraphicsLinearLayout QGraphicsWidget

class QGraphicsGridLayout ( [ parent=None ] ) ¶

param parent

QGraphicsLayoutItem

构造 QGraphicsGridLayout 实例。 parent 会被传递给 QGraphicsLayout ‘s constructor.

PySide2.QtWidgets.QGraphicsGridLayout. addItem ( item , row , column [ , alignment=Qt.Alignment() ] ) ¶

参数

item – QGraphicsLayoutItem
row – int
column – int
alignment – Alignment

添加 item to the grid on row and column . You can specify an optional alignment for item .

PySide2.QtWidgets.QGraphicsGridLayout. addItem ( item , row , column , rowSpan , columnSpan [ , alignment=Qt.Alignment() ] ) ¶

参数

item – QGraphicsLayoutItem
row – int
column – int
rowSpan – int
columnSpan – int
alignment – Alignment

添加 item to the grid on row and column . You can specify a rowSpan and columnSpan and an optional alignment .

PySide2.QtWidgets.QGraphicsGridLayout. alignment ( item ) ¶

参数: item – QGraphicsLayoutItem
返回类型: Alignment

返回对齐方式为 item .

另请参阅

setAlignment()

PySide2.QtWidgets.QGraphicsGridLayout. columnAlignment ( column ) ¶

参数: column – int
返回类型: Alignment

返回对齐方式为 column .

另请参阅

setColumnAlignment()

PySide2.QtWidgets.QGraphicsGridLayout. columnCount ( ) ¶

返回类型: int

Returns the number of columns in the grid layout. This is always one more than the index of the last column that is occupied by a layout item (empty columns are counted except for those at the end).

PySide2.QtWidgets.QGraphicsGridLayout. columnMaximumWidth ( column ) ¶

参数: column – int
返回类型: qreal

返回最大宽度为 column .

另请参阅

setColumnMaximumWidth()

PySide2.QtWidgets.QGraphicsGridLayout. columnMinimumWidth ( column ) ¶

参数: column – int
返回类型: qreal

Returns the minimum width for column .

另请参阅

setColumnMinimumWidth()

PySide2.QtWidgets.QGraphicsGridLayout. columnPreferredWidth ( column ) ¶

参数: column – int
返回类型: qreal

Returns the preferred width for column .

另请参阅

setColumnPreferredWidth()

PySide2.QtWidgets.QGraphicsGridLayout. columnSpacing ( column ) ¶

参数: column – int
返回类型: qreal

Returns the column spacing for column .

另请参阅

setColumnSpacing()

PySide2.QtWidgets.QGraphicsGridLayout. columnStretchFactor ( column ) ¶

参数: column – int
返回类型: int

Returns the stretch factor for column .

另请参阅

setColumnStretchFactor()

PySide2.QtWidgets.QGraphicsGridLayout. horizontalSpacing ( ) ¶

返回类型: qreal

Returns the default horizontal spacing for the grid layout.

另请参阅

setHorizontalSpacing()

PySide2.QtWidgets.QGraphicsGridLayout. itemAt ( row , column ) ¶

参数

row – int
column – int

返回类型

QGraphicsLayoutItem

Returns a pointer to the layout item at ( row , column ).

PySide2.QtWidgets.QGraphicsGridLayout. removeItem ( item ) ¶

参数: item – QGraphicsLayoutItem

移除布局项 item without destroying it. Ownership of the item is transferred to the caller.

另请参阅

addItem()

PySide2.QtWidgets.QGraphicsGridLayout. rowAlignment ( row ) ¶

参数: row – int
返回类型: Alignment

Returns the alignment of row .

另请参阅

setRowAlignment()

PySide2.QtWidgets.QGraphicsGridLayout. rowCount ( ) ¶

返回类型: int

Returns the number of rows in the grid layout. This is always one more than the index of the last row that is occupied by a layout item (empty rows are counted except for those at the end).

PySide2.QtWidgets.QGraphicsGridLayout. rowMaximumHeight ( row ) ¶