QGraphicsGridLayout¶

The QGraphicsGridLayout class provides a grid layout for managing widgets in Graphics View. More…

Synopsis¶

Functions¶

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 ()

Detailed Description¶

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 (such as 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() . Calling removeAt() will remove an item from the layout, without destroying it.

Size Hints and Size Policies in QGraphicsGridLayout¶

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.

See also

QGraphicsLinearLayout QGraphicsWidget

class QGraphicsGridLayout([parent=None])¶

param parent

QGraphicsLayoutItem

Constructs a QGraphicsGridLayout instance. parent is passed to QGraphicsLayout ‘s constructor.

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

Parameters

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

Adds 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()])

Parameters

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

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

PySide2.QtWidgets.QGraphicsGridLayout.alignment(item)¶

Parameters: item – QGraphicsLayoutItem
Return type: Alignment

Returns the alignment for item .

See also

setAlignment()

PySide2.QtWidgets.QGraphicsGridLayout.columnAlignment(column)¶

Parameters: column – int
Return type: Alignment

Returns the alignment for column .

See also

setColumnAlignment()

PySide2.QtWidgets.QGraphicsGridLayout.columnCount()¶

Return type: 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)¶

Parameters: column – int
Return type: qreal

Returns the maximum width for column .

See also

setColumnMaximumWidth()

PySide2.QtWidgets.QGraphicsGridLayout.columnMinimumWidth(column)¶

Parameters: column – int
Return type: qreal

Returns the minimum width for column .

See also

setColumnMinimumWidth()

PySide2.QtWidgets.QGraphicsGridLayout.columnPreferredWidth(column)¶

Parameters: column – int
Return type: qreal

Returns the preferred width for column .

See also

setColumnPreferredWidth()

PySide2.QtWidgets.QGraphicsGridLayout.columnSpacing(column)¶

Parameters: column – int
Return type: qreal

Returns the column spacing for column .

See also

setColumnSpacing()

PySide2.QtWidgets.QGraphicsGridLayout.columnStretchFactor(column)¶

Parameters: column – int
Return type: int

Returns the stretch factor for column .

See also

setColumnStretchFactor()

PySide2.QtWidgets.QGraphicsGridLayout.horizontalSpacing()¶

Return type: qreal

Returns the default horizontal spacing for the grid layout.

See also

setHorizontalSpacing()

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

Parameters

row – int
column – int

Return type

QGraphicsLayoutItem

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

PySide2.QtWidgets.QGraphicsGridLayout.removeItem(item)¶

Parameters: item – QGraphicsLayoutItem

Removes the layout item item without destroying it. Ownership of the item is transferred to the caller.

See also

addItem()

PySide2.QtWidgets.QGraphicsGridLayout.rowAlignment(row)¶

Parameters: row – int
Return type: Alignment

Returns the alignment of row .

See also

setRowAlignment()

PySide2.QtWidgets.QGraphicsGridLayout.rowCount()¶

Return type: 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)¶