def getLayoutsActiveLabels(self): """ Returns the layouts **Active_QLabel** widgets. :return: Layouts active labels. :rtype: list """ self.__layoutsActiveLabelsCollection = Active_QLabelsCollection(self) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.libraryIcon, UiConstants.libraryHoverIcon, UiConstants.libraryActiveIcon), "Library_activeLabel", "Library", "setsCentric", Qt.Key_6)) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.inspectIcon, UiConstants.inspectHoverIcon, UiConstants.inspectActiveIcon), "Inspect_activeLabel", "Inspect", "inspectCentric", Qt.Key_7)) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.exportIcon, UiConstants.exportHoverIcon, UiConstants.exportActiveIcon), "Export_activeLabel", "Export", "templatesCentric", Qt.Key_8)) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.editIcon, UiConstants.editHoverIcon, UiConstants.editActiveIcon), "Edit_activeLabel", "Edit", "editCentric", Qt.Key_9)) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.preferencesIcon, UiConstants.preferencesHoverIcon, UiConstants.preferencesActiveIcon), "Preferences_activeLabel", "Preferences", "preferencesCentric", Qt.Key_0)) return self.__layoutsActiveLabelsCollection.activeLabels
def getLayoutsActiveLabels(self): """ Returns the layouts **Active_QLabel** widgets. :return: Layouts active labels. :rtype: list """ self.__layoutsActiveLabelsCollection = Active_QLabelsCollection(self) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.developmentIcon, UiConstants.developmentHoverIcon, UiConstants.developmentActiveIcon), "Development_activeLabel", "Development", "developmentCentric", Qt.Key_9)) self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.preferencesIcon, UiConstants.preferencesHoverIcon, UiConstants.preferencesActiveIcon), "Preferences_activeLabel", "Preferences", "preferencesCentric", Qt.Key_0)) return self.__layoutsActiveLabelsCollection.activeLabels
class Application_QToolBar(umbra.ui.widgets.application_QToolBar.Application_QToolBar):
"""
Defines defines the Application toolbar.
"""
__metaclass__ = foundations.guerilla.baseWarfare
#******************************************************************************************************************
#*** Class methods.
#******************************************************************************************************************
def __centralWidgetButton__clicked(self):
"""
Sets the **Central** Widget visibility.
"""
LOGGER.debug("> Central Widget button clicked!")
if self.__container.centralWidget().isVisible():
self.__container.centralWidget().hide()
else:
self.__container.centralWidget().show()
def setToolBarChildrenWidgets(self):
"""
Sets the toolBar children widgets.
:return: Method success.
:rtype: bool
"""
LOGGER.debug("> Adding 'Application_Logo_label' widget!")
self.addWidget(self.getApplicationLogoLabel())
LOGGER.debug("> Adding 'Spacer_label' widget!")
self.addWidget(self.getSpacerLabel())
LOGGER.debug("> Adding 'Library_activeLabel', \
'Inspect_activeLabel', \
'Export_activeLabel', \
'Edit_activeLabel', \
'Preferences_activeLabel' \
widgets!")
for layoutActiveLabel in self.getLayoutsActiveLabels():
self.addWidget(layoutActiveLabel)
LOGGER.debug("> Adding 'Central_Widget_activeLabel' widget!")
self.addWidget(self.getCentralWidgetActiveLabel())
LOGGER.debug("> Adding 'Custom_Layouts_activeLabel' widget!")
self.addWidget(self.getCustomLayoutsActiveLabel())
LOGGER.debug("> Adding 'Miscellaneous_activeLabel' widget!")
self.addWidget(self.getMiscellaneousActiveLabel())
self.extendMiscellaneousActiveLabel()
LOGGER.debug("> Adding 'Closure_Spacer_label' widget!")
self.addWidget(self.getClosureSpacerLabel())
return True
def getLayoutsActiveLabels(self):
"""
Returns the layouts **Active_QLabel** widgets.
:return: Layouts active labels.
:rtype: list
"""
self.__layoutsActiveLabelsCollection = Active_QLabelsCollection(self)
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.libraryIcon,
UiConstants.libraryHoverIcon,
UiConstants.libraryActiveIcon),
"Library_activeLabel",
"Library",
"setsCentric",
Qt.Key_6))
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.inspectIcon,
UiConstants.inspectHoverIcon,
UiConstants.inspectActiveIcon),
"Inspect_activeLabel",
"Inspect",
"inspectCentric",
Qt.Key_7))
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.exportIcon,
UiConstants.exportHoverIcon,
UiConstants.exportActiveIcon),
"Export_activeLabel",
"Export",
"templatesCentric",
Qt.Key_8))
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.editIcon,
UiConstants.editHoverIcon,
UiConstants.editActiveIcon),
"Edit_activeLabel",
"Edit",
"editCentric",
Qt.Key_9))
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.preferencesIcon,
UiConstants.preferencesHoverIcon,
UiConstants.preferencesActiveIcon),
"Preferences_activeLabel",
"Preferences",
"preferencesCentric",
Qt.Key_0))
return self.__layoutsActiveLabelsCollection.activeLabels
def getCentralWidgetActiveLabel(self):
"""
Provides the default **Central_Widget_activeLabel** widget.
:return: Central Widget active label.
:rtype: Active_QLabel
"""
centralWidgetButton = Active_QLabel(self,
QPixmap(umbra.ui.common.getResourcePath(UiConstants.centralWidgetIcon)),
QPixmap(umbra.ui.common.getResourcePath(UiConstants.centralWidgetHoverIcon)),
QPixmap(umbra.ui.common.getResourcePath(UiConstants.centralWidgetActiveIcon)))
centralWidgetButton.setObjectName("Central_Widget_activeLabel")
# Signals / Slots.
centralWidgetButton.clicked.connect(self.__centralWidgetButton__clicked)
return centralWidgetButton
def extendMiscellaneousActiveLabel(self):
"""
Extends the default **Miscellaneous_activeLabel** widget.
:return: Method success.
:rtype: bool
"""
self.miscellaneousMenu.addAction(self.__container.actionsManager.registerAction(
"Actions|Umbra|ToolBar|Miscellaneous|Make A Donation ...",
slot=self.__makeDonationDisplayMiscAction__triggered))
self.miscellaneousMenu.addSeparator()
return True
def __makeDonationDisplayMiscAction__triggered(self, checked):
"""
Defines the slot triggered by **'Actions|Umbra|ToolBar|Miscellaneous|Make A Donation ...'** action.
:param checked: Checked state.
:type checked: bool
:return: Method success.
:rtype: bool
"""
LOGGER.debug("> Opening url: '{0}'.".format(UiConstants.makeDonationFile))
QDesktopServices.openUrl(QUrl(QString(UiConstants.makeDonationFile)))
return True
class Application_QToolBar(QToolBar):
"""
Defines a `QToolBar <http://doc.qt.nokia.com/qtoolbar.html>`_ subclass providing
the Application toolbar.
"""
def __init__(self, parent=None):
"""
Initializes the class.
:param parent: Widget parent.
:type parent: QObject
"""
LOGGER.debug("> Initializing '{0}()' class.".format(self.__class__.__name__))
QToolBar.__init__(self, parent)
# --- Setting class attributes. ---
self.__container = parent
self.__settings = self.__container.settings
self.__layoutsActiveLabelsCollection = None
self.__customLayoutsMenu = None
self.__miscellaneousMenu = None
self.__userLayouts = (umbra.managers.layoutsManager.Layout(name="1", identity="one", shortcut=Qt.Key_1),
umbra.managers.layoutsManager.Layout(name="2", identity="two", shortcut=Qt.Key_2),
umbra.managers.layoutsManager.Layout(name="3", identity="three", shortcut=Qt.Key_3),
umbra.managers.layoutsManager.Layout(name="4", identity="four", shortcut=Qt.Key_4),
umbra.managers.layoutsManager.Layout(name="5", identity="five", shortcut=Qt.Key_5))
Application_QToolBar.__initializeUi(self)
#******************************************************************************************************************
#*** Attributes properties.
#******************************************************************************************************************
@property
def container(self):
"""
Property for **self.__container** attribute.
:return: self.__container.
:rtype: QObject
"""
return self.__container
@container.setter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def container(self, value):
"""
Setter for **self.__container** attribute.
:param value: Attribute value.
:type value: QObject
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is read only!".format(self.__class__.__name__, "container"))
@container.deleter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def container(self):
"""
Deleter for **self.__container** attribute.
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is not deletable!".format(self.__class__.__name__, "container"))
@property
def settings(self):
"""
Property for **self.__settings** attribute.
:return: self.__settings.
:rtype: Preferences
"""
return self.__settings
@settings.setter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def settings(self, value):
"""
Setter for **self.__settings** attribute.
:param value: Attribute value.
:type value: Preferences
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is read only!".format(self.__class__.__name__, "settings"))
@settings.deleter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def settings(self):
"""
Deleter for **self.__settings** attribute.
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is not deletable!".format(self.__class__.__name__, "settings"))
@property
def layoutsActiveLabelsCollection(self):
"""
Property for **self.__layoutsActiveLabelsCollection** attribute.
:return: self.__layoutsActiveLabelsCollection.
:rtype: Active_QLabelsCollection
"""
return self.__layoutsActiveLabelsCollection
@layoutsActiveLabelsCollection.setter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def layoutsActiveLabelsCollection(self, value):
"""
Setter for **self.__layoutsActiveLabelsCollection** attribute.
:param value: Attribute value.
:type value: Active_QLabelsCollection
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is read only!".format(self.__class__.__name__, "layoutsActiveLabelsCollection"))
@layoutsActiveLabelsCollection.deleter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def layoutsActiveLabelsCollection(self):
"""
Deleter for **self.__layoutsActiveLabelsCollection** attribute.
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is not deletable!".format(self.__class__.__name__, "layoutsActiveLabelsCollection"))
@property
def customLayoutsMenu(self):
"""
Property for **self.__customLayoutsMenu** attribute.
:return: self.__customLayoutsMenu.
:rtype: QMenu
"""
return self.__customLayoutsMenu
@customLayoutsMenu.setter
@foundations.exceptions.handleExceptions(AssertionError)
def customLayoutsMenu(self, value):
"""
Setter for **self.__customLayoutsMenu** attribute.
:param value: Attribute value.
:type value: QMenu
"""
if value is not None:
assert type(value) is QMenu, "'{0}' attribute: '{1}' type is not 'QMenu'!".format("customLayoutsMenu", value)
self.__customLayoutsMenu = value
@customLayoutsMenu.deleter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def customLayoutsMenu(self):
"""
Deleter for **self.__customLayoutsMenu** attribute.
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is not deletable!".format(self.__class__.__name__, "customLayoutsMenu"))
@property
def miscellaneousMenu(self):
"""
Property for **self.__miscellaneousMenu** attribute.
:return: self.__miscellaneousMenu.
:rtype: QMenu
"""
return self.__miscellaneousMenu
@miscellaneousMenu.setter
@foundations.exceptions.handleExceptions(AssertionError)
def miscellaneousMenu(self, value):
"""
Setter for **self.__miscellaneousMenu** attribute.
:param value: Attribute value.
:type value: QMenu
"""
if value is not None:
assert type(value) is QMenu, "'{0}' attribute: '{1}' type is not 'QMenu'!".format("miscellaneousMenu", value)
self.__miscellaneousMenu = value
@miscellaneousMenu.deleter
@foundations.exceptions.handleExceptions(foundations.exceptions.ProgrammingError)
def miscellaneousMenu(self):
"""
Deleter for **self.__miscellaneousMenu** attribute.
"""
raise foundations.exceptions.ProgrammingError(
"{0} | '{1}' attribute is not deletable!".format(self.__class__.__name__, "miscellaneousMenu"))
#******************************************************************************************************************
#*** Class methods.
#******************************************************************************************************************
def __initializeUi(self):
"""
Initializes the Widget ui.
"""
LOGGER.debug("> Initializing Application toolBar!")
self.setIconSize(QSize(UiConstants.defaultToolbarIconSize, UiConstants.defaultToolbarIconSize))
self.setAllowedAreas(Qt.TopToolBarArea)
self.setFloatable(False)
self.setMovable(False)
self.setLayoutDefaultGeometry()
self.setObjectName("toolBar")
self.setWindowTitle("{0} - toolBar".format(Constants.applicationName))
self.setToolBarChildrenWidgets()
# Signals / Slots.
self.__container.layoutsManager.layoutStored.connect(self.__layoutsManager__layoutStored)
self.__container.layoutsManager.layoutRestored.connect(self.__layoutsManager__layoutRestored)
def __layoutActiveLabel__clicked(self, layout):
"""
Defines the slot triggered by a **Active_QLabel** Widget when clicked.
:param layout: Layout name.
:type layout: unicode
"""
self.__container.layoutsManager.restoreLayout(layout)
def __layoutsManager__layoutStored(self, layout):
"""
Defines the slot triggered by :class:`umbra.managers.layoutsManager.LayoutsManager` class
when a layout is stored.
:param layout: Layout name.
:type layout: unicode
"""
layoutActiveLabel = self.__layoutsActiveLabelsCollection.getToggledActiveLabel()
layoutActiveLabel and self.__settings.setKey("Layouts",
"{0}_activeLabel".format(layout),
layoutActiveLabel.objectName())
def __layoutsManager__layoutRestored(self, layout):
"""
Defines the slot triggered by :class:`umbra.managers.layoutsManager.LayoutsManager` class
when a layout is restored.
:param layout: Layout name.
:type layout: unicode
"""
layoutActiveLabel = self.__settings.getKey("Layouts", "{0}_activeLabel".format(layout)).toString()
for activeLabel in self.__layoutsActiveLabelsCollection.activeLabels:
if not activeLabel.objectName() == layoutActiveLabel:
continue
activeLabel.setChecked(True)
def __helpDisplayMiscAction__triggered(self, checked):
"""
Defines the slot triggered by **'Actions|Umbra|ToolBar|Miscellaneous|Help content ...'** action.
:param checked: Checked state.
:type checked: bool
:return: Method success.
:rtype: bool
"""
LOGGER.debug("> Opening url: '{0}'.".format(UiConstants.helpFile))
QDesktopServices.openUrl(QUrl(QString(UiConstants.helpFile)))
return True
def __apiDisplayMiscAction__triggered(self, checked):
"""
Defines the slot triggered by **'Actions|Umbra|ToolBar|Miscellaneous|Api content ...'** action.
:param checked: Checked state.
:type checked: bool
:return: Method success.
:rtype: bool
"""
LOGGER.debug("> Opening url: '{0}'.".format(UiConstants.apiFile))
QDesktopServices.openUrl(QUrl(QString(UiConstants.apiFile)))
return True
def setLayoutDefaultGeometry(self):
"""
Sets the toolBar layout default geometry.
:return: Method success.
:rtype: bool
"""
self.layout().setSpacing(8)
self.layout().setContentsMargins(0, 0, 0, 0)
return True
def setToolBarChildrenWidgets(self):
"""
Sets the toolBar children widgets.
:return: Method success.
:rtype: bool
"""
LOGGER.debug("> Adding 'Application_Logo_label' widget!")
self.addWidget(self.getApplicationLogoLabel())
LOGGER.debug("> Adding 'Spacer_label' widget!")
self.addWidget(self.getSpacerLabel())
LOGGER.debug("> Adding 'Development_activeLabel', 'Preferences_activeLabel' widgets!")
for layoutActiveLabel in self.getLayoutsActiveLabels():
self.addWidget(layoutActiveLabel)
LOGGER.debug("> Adding 'Custom_Layouts_activeLabel' widget!")
self.addWidget(self.getCustomLayoutsActiveLabel())
LOGGER.debug("> Adding 'Miscellaneous_activeLabel' widget!")
self.addWidget(self.getMiscellaneousActiveLabel())
LOGGER.debug("> Adding 'Closure_Spacer_label' widget!")
self.addWidget(self.getClosureSpacerLabel())
return True
def getApplicationLogoLabel(self):
"""
Provides the default **Application_Logo_label** widget.
:return: Application logo label.
:rtype: QLabel
"""
logoLabel = QLabel()
logoLabel.setObjectName("Application_Logo_label")
logoLabel.setPixmap(QPixmap(umbra.ui.common.getResourcePath(UiConstants.logoImage)))
return logoLabel
def getLayoutActiveLabel(self, resources, name, title, identity, shortcut):
"""
Returns a layout **Active_QLabel** widget.
:param resources: Icons resources ( Default / Hover / Active ).
:type resources: tuple
:param name: Ui object name.
:type name: unicode
:param title: Layout registration title.
:type title: unicode
:param identity: Layout code name.
:type identity: unicode
:param shortcut: Layout associated shortcut. ( QtCore.Key )
:return: Layout active label.
:rtype: Active_QLabel
"""
defaultIcon, hoverIcon, activeIcon = resources
layoutActiveLabel = Active_QLabel(self,
QPixmap(umbra.ui.common.getResourcePath(defaultIcon)),
QPixmap(umbra.ui.common.getResourcePath(hoverIcon)),
QPixmap(umbra.ui.common.getResourcePath(activeIcon)),
True)
self.__container.layoutsManager.registerLayout(identity, umbra.managers.layoutsManager.Layout(name=title,
identity=identity,
shortcut=shortcut))
self.__container.addAction(
self.__container.actionsManager.registerAction("Actions|Umbra|ToolBar|Layouts|Restore layout {0}".format(title),
shortcut=shortcut,
shortcutContext=Qt.ApplicationShortcut,
slot=functools.partial(
self.__container.layoutsManager.restoreLayout, identity)))
layoutActiveLabel.setObjectName(name)
# Signals / Slots.
layoutActiveLabel.clicked.connect(functools.partial(self.__layoutActiveLabel__clicked, identity))
return layoutActiveLabel
def getLayoutsActiveLabels(self):
"""
Returns the layouts **Active_QLabel** widgets.
:return: Layouts active labels.
:rtype: list
"""
self.__layoutsActiveLabelsCollection = Active_QLabelsCollection(self)
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.developmentIcon,
UiConstants.developmentHoverIcon,
UiConstants.developmentActiveIcon),
"Development_activeLabel",
"Development",
"developmentCentric",
Qt.Key_9))
self.__layoutsActiveLabelsCollection.addActiveLabel(self.getLayoutActiveLabel((UiConstants.preferencesIcon,
UiConstants.preferencesHoverIcon,
UiConstants.preferencesActiveIcon),
"Preferences_activeLabel",
"Preferences",
"preferencesCentric",
Qt.Key_0))
return self.__layoutsActiveLabelsCollection.activeLabels
def getCustomLayoutsActiveLabel(self):
"""
Provides the default **Custom_Layouts_activeLabel** widget.
:return: Layout active label.
:rtype: Active_QLabel
"""
layoutActiveLabel = Active_QLabel(self, QPixmap(umbra.ui.common.getResourcePath(UiConstants.customLayoutsIcon)),
QPixmap(umbra.ui.common.getResourcePath(UiConstants.customLayoutsHoverIcon)),
QPixmap(umbra.ui.common.getResourcePath(UiConstants.customLayoutsActiveIcon)))
layoutActiveLabel.setObjectName("Custom_Layouts_activeLabel")
self.__customLayoutsMenu = QMenu("Layouts", layoutActiveLabel)
for layout in self.__userLayouts:
self.__container.layoutsManager.registerLayout(layout.identity, layout)
self.__customLayoutsMenu.addAction(self.__container.actionsManager.registerAction(
"Actions|Umbra|ToolBar|Layouts|Restore layout {0}".format(layout.name),
shortcut=layout.shortcut,
slot=functools.partial(self.__container.layoutsManager.restoreLayout, layout.identity)))
self.__customLayoutsMenu.addSeparator()
for layout in self.__userLayouts:
self.__customLayoutsMenu.addAction(self.__container.actionsManager.registerAction(
"Actions|Umbra|ToolBar|Layouts|Store layout {0}".format(layout.name),
shortcut=Qt.CTRL + layout.shortcut,
slot=functools.partial(self.__container.layoutsManager.storeLayout, layout.identity)))
self.__customLayoutsMenu.addSeparator()
self.__customLayoutsMenu.addAction(self.__container.actionsManager.registerAction(
"Actions|Umbra|ToolBar|Layouts|Toggle FullScreen",
shortcut=Qt.ControlModifier + Qt.SHIFT + Qt.Key_F,
slot=self.__container.toggleFullScreen))
layoutActiveLabel.setMenu(self.__customLayoutsMenu)
return layoutActiveLabel
def getMiscellaneousActiveLabel(self):
"""
Provides the default **Miscellaneous_activeLabel** widget.
:return: Miscellaneous active label.
:rtype: Active_QLabel
"""
miscellaneousActiveLabel = Active_QLabel(self,
QPixmap(umbra.ui.common.getResourcePath(UiConstants.miscellaneousIcon)),
QPixmap(umbra.ui.common.getResourcePath(UiConstants.miscellaneousHoverIcon)),
QPixmap(umbra.ui.common.getResourcePath(UiConstants.miscellaneousActiveIcon)))
miscellaneousActiveLabel.setObjectName("Miscellaneous_activeLabel")
self.__miscellaneousMenu = QMenu("Miscellaneous", miscellaneousActiveLabel)
self.__miscellaneousMenu.addAction(self.__container.actionsManager.registerAction(
"Actions|Umbra|ToolBar|Miscellaneous|Help content ...",
shortcut="F1",
slot=self.__helpDisplayMiscAction__triggered))
self.__miscellaneousMenu.addAction(self.__container.actionsManager.registerAction(
"Actions|Umbra|ToolBar|Miscellaneous|Api content ...",
slot=self.__apiDisplayMiscAction__triggered))
self.__miscellaneousMenu.addSeparator()
miscellaneousActiveLabel.setMenu(self.__miscellaneousMenu)
return miscellaneousActiveLabel
def getSpacerLabel(self):
"""
Provides the default **Spacer_label** widget.
:return: Logo spacer label.
:rtype: QLabel
"""
spacer = QLabel()
spacer.setObjectName("Spacer_label")
spacer.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
return spacer
def getClosureSpacerLabel(self):
"""
Provides the default **Closure_Spacer_label** widget.
:return: Closure spacer label.
:rtype: QLabel
"""
spacer = QLabel()
spacer.setObjectName("Closure_Spacer_label")
spacer.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Expanding)
return spacer