class GraphicsTextWidget(QGraphicsWidget): def __init__(self, text, parent=None, **kwargs): super().__init__(parent, **kwargs) self.labelItem = QGraphicsTextItem(self) self.setHtml(text) self.labelItem.document().documentLayout().documentSizeChanged.connect( self.onLayoutChanged) def setGeometry(self, rect): self.prepareGeometryChange() super().setGeometry(rect) def onLayoutChanged(self, *args): self.updateGeometry() def sizeHint(self, which, constraint=QSizeF()): if which == Qt.MinimumSize: return self.labelItem.boundingRect().size() else: return self.labelItem.boundingRect().size() def setTextWidth(self, width): self.labelItem.setTextWidth(width) def setHtml(self, text): self.labelItem.setHtml(text)
class GraphicsTextWidget(QGraphicsWidget): def __init__(self, text, parent=None, **kwargs): super().__init__(parent, **kwargs) self.labelItem = QGraphicsTextItem(self) self.setHtml(text) self.labelItem.document().documentLayout().documentSizeChanged.connect( self.onLayoutChanged ) def setGeometry(self, rect): self.prepareGeometryChange() super().setGeometry(rect) def onLayoutChanged(self, *args): self.updateGeometry() def sizeHint(self, which, constraint=QSizeF()): if which == Qt.MinimumSize: return self.labelItem.boundingRect().size() else: return self.labelItem.boundingRect().size() def setTextWidth(self, width): self.labelItem.setTextWidth(width) def setHtml(self, text): self.labelItem.setHtml(text)
class LinkItem(QGraphicsObject): """ A Link item in the canvas that connects two :class:`.NodeItem`\s in the canvas. The link curve connects two `Anchor` items (see :func:`setSourceItem` and :func:`setSinkItem`). Once the anchors are set the curve automatically adjusts its end points whenever the anchors move. An optional source/sink text item can be displayed above the curve's central point (:func:`setSourceName`, :func:`setSinkName`) """ #: Z value of the item Z_VALUE = 0 #: Runtime link state value #: These are pulled from SchemeLink.State for ease of binding to it's #: state State = SchemeLink.State #: The link has no associated state. NoState = SchemeLink.NoState #: Link is empty; the source node does not have any value on output Empty = SchemeLink.Empty #: Link is active; the source node has a valid value on output Active = SchemeLink.Active #: The link is pending; the sink node is scheduled for update Pending = SchemeLink.Pending def __init__(self, *args): self.__boundingRect = None QGraphicsObject.__init__(self, *args) self.setFlag(QGraphicsItem.ItemHasNoContents, True) self.setAcceptedMouseButtons(Qt.RightButton | Qt.LeftButton) self.setAcceptHoverEvents(True) self.setZValue(self.Z_VALUE) self.sourceItem = None self.sourceAnchor = None self.sinkItem = None self.sinkAnchor = None self.curveItem = LinkCurveItem(self) self.sourceIndicator = LinkAnchorIndicator(self) self.sinkIndicator = LinkAnchorIndicator(self) self.sourceIndicator.hide() self.sinkIndicator.hide() self.linkTextItem = QGraphicsTextItem(self) self.linkTextItem.setAcceptedMouseButtons(Qt.NoButton) self.linkTextItem.setAcceptHoverEvents(False) self.__sourceName = "" self.__sinkName = "" self.__dynamic = False self.__dynamicEnabled = False self.__state = LinkItem.NoState self.hover = False self.prepareGeometryChange() self.__updatePen() self.__boundingRect = None def setSourceItem(self, item, anchor=None): """ Set the source `item` (:class:`.NodeItem`). Use `anchor` (:class:`.AnchorPoint`) as the curve start point (if ``None`` a new output anchor will be created using ``item.newOutputAnchor()``). Setting item to ``None`` and a valid anchor is a valid operation (for instance while mouse dragging one end of the link). """ if item is not None and anchor is not None: if anchor not in item.outputAnchors(): raise ValueError("Anchor must be belong to the item") if self.sourceItem != item: if self.sourceAnchor: # Remove a previous source item and the corresponding anchor self.sourceAnchor.scenePositionChanged.disconnect( self._sourcePosChanged ) if self.sourceItem is not None: self.sourceItem.removeOutputAnchor(self.sourceAnchor) self.sourceItem = self.sourceAnchor = None self.sourceItem = item if item is not None and anchor is None: # Create a new output anchor for the item if none is provided. anchor = item.newOutputAnchor() # Update the visibility of the start point indicator. self.sourceIndicator.setVisible(bool(item)) if anchor != self.sourceAnchor: if self.sourceAnchor is not None: self.sourceAnchor.scenePositionChanged.disconnect( self._sourcePosChanged ) self.sourceAnchor = anchor if self.sourceAnchor is not None: self.sourceAnchor.scenePositionChanged.connect( self._sourcePosChanged ) self.__updateCurve() def setSinkItem(self, item, anchor=None): """ Set the sink `item` (:class:`.NodeItem`). Use `anchor` (:class:`.AnchorPoint`) as the curve end point (if ``None`` a new input anchor will be created using ``item.newInputAnchor()``). Setting item to ``None`` and a valid anchor is a valid operation (for instance while mouse dragging one and of the link). """ if item is not None and anchor is not None: if anchor not in item.inputAnchors(): raise ValueError("Anchor must be belong to the item") if self.sinkItem != item: if self.sinkAnchor: # Remove a previous source item and the corresponding anchor self.sinkAnchor.scenePositionChanged.disconnect( self._sinkPosChanged ) if self.sinkItem is not None: self.sinkItem.removeInputAnchor(self.sinkAnchor) self.sinkItem = self.sinkAnchor = None self.sinkItem = item if item is not None and anchor is None: # Create a new input anchor for the item if none is provided. anchor = item.newInputAnchor() # Update the visibility of the end point indicator. self.sinkIndicator.setVisible(bool(item)) if self.sinkAnchor != anchor: if self.sinkAnchor is not None: self.sinkAnchor.scenePositionChanged.disconnect( self._sinkPosChanged ) self.sinkAnchor = anchor if self.sinkAnchor is not None: self.sinkAnchor.scenePositionChanged.connect( self._sinkPosChanged ) self.__updateCurve() def setFont(self, font): """ Set the font for the channel names text item. """ if font != self.font(): self.linkTextItem.setFont(font) self.__updateText() def font(self): """ Return the font for the channel names text. """ return self.linkTextItem.font() def setChannelNamesVisible(self, visible): """ Set the visibility of the channel name text. """ self.linkTextItem.setVisible(visible) def setSourceName(self, name): """ Set the name of the source (used in channel name text). """ if self.__sourceName != name: self.__sourceName = name self.__updateText() def sourceName(self): """ Return the source name. """ return self.__sourceName def setSinkName(self, name): """ Set the name of the sink (used in channel name text). """ if self.__sinkName != name: self.__sinkName = name self.__updateText() def sinkName(self): """ Return the sink name. """ return self.__sinkName def _sinkPosChanged(self, *arg): self.__updateCurve() def _sourcePosChanged(self, *arg): self.__updateCurve() def __updateCurve(self): self.prepareGeometryChange() self.__boundingRect = None if self.sourceAnchor and self.sinkAnchor: source_pos = self.sourceAnchor.anchorScenePos() sink_pos = self.sinkAnchor.anchorScenePos() source_pos = self.curveItem.mapFromScene(source_pos) sink_pos = self.curveItem.mapFromScene(sink_pos) # Adaptive offset for the curve control points to avoid a # cusp when the two points have the same y coordinate # and are close together delta = source_pos - sink_pos dist = math.sqrt(delta.x() ** 2 + delta.y() ** 2) cp_offset = min(dist / 2.0, 60.0) # TODO: make the curve tangent orthogonal to the anchors path. path = QPainterPath() path.moveTo(source_pos) path.cubicTo(source_pos + QPointF(cp_offset, 0), sink_pos - QPointF(cp_offset, 0), sink_pos) self.curveItem.setCurvePath(path) self.sourceIndicator.setPos(source_pos) self.sinkIndicator.setPos(sink_pos) self.__updateText() else: self.setHoverState(False) self.curveItem.setPath(QPainterPath()) def __updateText(self): self.prepareGeometryChange() self.__boundingRect = None if self.__sourceName or self.__sinkName: if self.__sourceName != self.__sinkName: text = ("<nobr>{0}</nobr> \u2192 <nobr>{1}</nobr>" .format(escape(self.__sourceName), escape(self.__sinkName))) else: # If the names are the same show only one. # Is this right? If the sink has two input channels of the # same type having the name on the link help elucidate # the scheme. text = escape(self.__sourceName) else: text = "" self.linkTextItem.setHtml('<div align="center">{0}</div>' .format(text)) path = self.curveItem.curvePath() # Constrain the text width if it is too long to fit on a single line # between the two ends if not path.isEmpty(): # Use the distance between the start/end points as a measure of # available space diff = path.pointAtPercent(0.0) - path.pointAtPercent(1.0) available_width = math.sqrt(diff.x() ** 2 + diff.y() ** 2) # Get the ideal text width if it was unconstrained doc = self.linkTextItem.document().clone(self) doc.setTextWidth(-1) idealwidth = doc.idealWidth() doc.deleteLater() # Constrain the text width but not below a certain min width minwidth = 100 textwidth = max(minwidth, min(available_width, idealwidth)) self.linkTextItem.setTextWidth(textwidth) else: # Reset the fixed width self.linkTextItem.setTextWidth(-1) if not path.isEmpty(): center = path.pointAtPercent(0.5) angle = path.angleAtPercent(0.5) brect = self.linkTextItem.boundingRect() transform = QTransform() transform.translate(center.x(), center.y()) transform.rotate(-angle) # Center and move above the curve path. transform.translate(-brect.width() / 2, -brect.height()) self.linkTextItem.setTransform(transform) def removeLink(self): self.setSinkItem(None) self.setSourceItem(None) self.__updateCurve() def setHoverState(self, state): if self.hover != state: self.prepareGeometryChange() self.__boundingRect = None self.hover = state self.sinkIndicator.setHoverState(state) self.sourceIndicator.setHoverState(state) self.curveItem.setHoverState(state) self.__updatePen() def hoverEnterEvent(self, event): # Hover enter event happens when the mouse enters any child object # but we only want to show the 'hovered' shadow when the mouse # is over the 'curveItem', so we install self as an event filter # on the LinkCurveItem and listen to its hover events. self.curveItem.installSceneEventFilter(self) return QGraphicsObject.hoverEnterEvent(self, event) def hoverLeaveEvent(self, event): # Remove the event filter to prevent unnecessary work in # scene event filter when not needed self.curveItem.removeSceneEventFilter(self) return QGraphicsObject.hoverLeaveEvent(self, event) def sceneEventFilter(self, obj, event): if obj is self.curveItem: if event.type() == QEvent.GraphicsSceneHoverEnter: self.setHoverState(True) elif event.type() == QEvent.GraphicsSceneHoverLeave: self.setHoverState(False) return QGraphicsObject.sceneEventFilter(self, obj, event) def boundingRect(self): if self.__boundingRect is None: self.__boundingRect = self.childrenBoundingRect() return self.__boundingRect def shape(self): return self.curveItem.shape() def setEnabled(self, enabled): """ Reimplemented from :class:`QGraphicsObject` Set link enabled state. When disabled the link is rendered with a dashed line. """ # This getter/setter pair override a property from the base class. # They should be renamed to e.g. setLinkEnabled/linkEnabled self.curveItem.setLinkEnabled(enabled) def isEnabled(self): return self.curveItem.isLinkEnabled() def setDynamicEnabled(self, enabled): """ Set the link's dynamic enabled state. If the link is `dynamic` it will be rendered in red/green color respectively depending on the state of the dynamic enabled state. """ if self.__dynamicEnabled != enabled: self.__dynamicEnabled = enabled if self.__dynamic: self.__updatePen() def isDynamicEnabled(self): """ Is the link dynamic enabled. """ return self.__dynamicEnabled def setDynamic(self, dynamic): """ Mark the link as dynamic (i.e. it responds to :func:`setDynamicEnabled`). """ if self.__dynamic != dynamic: self.__dynamic = dynamic self.__updatePen() def isDynamic(self): """ Is the link dynamic. """ return self.__dynamic def setRuntimeState(self, state): """ Style the link appropriate to the LinkItem.State Parameters ---------- state : LinkItem.State """ if self.__state != state: self.__state = state if state & LinkItem.Pending: self.sinkIndicator.setBrush(QBrush(Qt.yellow)) else: self.sinkIndicator.setBrush(QBrush(QColor("#9CACB4"))) self.__updatePen() def runtimeState(self): return self.__state def __updatePen(self): self.prepareGeometryChange() self.__boundingRect = None if self.__dynamic: if self.__dynamicEnabled: color = QColor(0, 150, 0, 150) else: color = QColor(150, 0, 0, 150) normal = QPen(QBrush(color), 2.0) hover = QPen(QBrush(color.darker(120)), 2.1) else: normal = QPen(QBrush(QColor("#9CACB4")), 2.0) hover = QPen(QBrush(QColor("#7D7D7D")), 2.1) if self.__state & LinkItem.Empty: pen_style = Qt.DashLine else: pen_style = Qt.SolidLine normal.setStyle(pen_style) hover.setStyle(pen_style) if self.hover: pen = hover else: pen = normal self.curveItem.setPen(pen)
class LinkItem(QGraphicsWidget): """ A Link item in the canvas that connects two :class:`.NodeItem`\s in the canvas. The link curve connects two `Anchor` items (see :func:`setSourceItem` and :func:`setSinkItem`). Once the anchors are set the curve automatically adjusts its end points whenever the anchors move. An optional source/sink text item can be displayed above the curve's central point (:func:`setSourceName`, :func:`setSinkName`) """ #: Z value of the item Z_VALUE = 0 #: Runtime link state value #: These are pulled from SchemeLink.State for ease of binding to it's #: state State = SchemeLink.State #: The link has no associated state. NoState = SchemeLink.NoState #: Link is empty; the source node does not have any value on output Empty = SchemeLink.Empty #: Link is active; the source node has a valid value on output Active = SchemeLink.Active #: The link is pending; the sink node is scheduled for update Pending = SchemeLink.Pending def __init__(self, *args): self.__boundingRect = None super().__init__(*args) self.setFlag(QGraphicsItem.ItemHasNoContents, True) self.setAcceptedMouseButtons(Qt.RightButton | Qt.LeftButton) self.setAcceptHoverEvents(True) self.setZValue(self.Z_VALUE) self.sourceItem = None self.sourceAnchor = None self.sinkItem = None self.sinkAnchor = None self.curveItem = LinkCurveItem(self) self.sourceIndicator = LinkAnchorIndicator(self) self.sinkIndicator = LinkAnchorIndicator(self) self.sourceIndicator.hide() self.sinkIndicator.hide() self.linkTextItem = QGraphicsTextItem(self) self.linkTextItem.setAcceptedMouseButtons(Qt.NoButton) self.linkTextItem.setAcceptHoverEvents(False) self.__sourceName = "" self.__sinkName = "" self.__dynamic = False self.__dynamicEnabled = False self.__state = LinkItem.NoState self.hover = False self.prepareGeometryChange() self.__updatePen() self.__boundingRect = None self.__updatePalette() self.__updateFont() def setSourceItem(self, item, anchor=None): """ Set the source `item` (:class:`.NodeItem`). Use `anchor` (:class:`.AnchorPoint`) as the curve start point (if ``None`` a new output anchor will be created using ``item.newOutputAnchor()``). Setting item to ``None`` and a valid anchor is a valid operation (for instance while mouse dragging one end of the link). """ if item is not None and anchor is not None: if anchor not in item.outputAnchors(): raise ValueError("Anchor must be belong to the item") if self.sourceItem != item: if self.sourceAnchor: # Remove a previous source item and the corresponding anchor self.sourceAnchor.scenePositionChanged.disconnect( self._sourcePosChanged ) if self.sourceItem is not None: self.sourceItem.removeOutputAnchor(self.sourceAnchor) self.sourceItem = self.sourceAnchor = None self.sourceItem = item if item is not None and anchor is None: # Create a new output anchor for the item if none is provided. anchor = item.newOutputAnchor() # Update the visibility of the start point indicator. self.sourceIndicator.setVisible(bool(item)) if anchor != self.sourceAnchor: if self.sourceAnchor is not None: self.sourceAnchor.scenePositionChanged.disconnect( self._sourcePosChanged ) self.sourceAnchor = anchor if self.sourceAnchor is not None: self.sourceAnchor.scenePositionChanged.connect( self._sourcePosChanged ) self.__updateCurve() def setSinkItem(self, item, anchor=None): """ Set the sink `item` (:class:`.NodeItem`). Use `anchor` (:class:`.AnchorPoint`) as the curve end point (if ``None`` a new input anchor will be created using ``item.newInputAnchor()``). Setting item to ``None`` and a valid anchor is a valid operation (for instance while mouse dragging one and of the link). """ if item is not None and anchor is not None: if anchor not in item.inputAnchors(): raise ValueError("Anchor must be belong to the item") if self.sinkItem != item: if self.sinkAnchor: # Remove a previous source item and the corresponding anchor self.sinkAnchor.scenePositionChanged.disconnect( self._sinkPosChanged ) if self.sinkItem is not None: self.sinkItem.removeInputAnchor(self.sinkAnchor) self.sinkItem = self.sinkAnchor = None self.sinkItem = item if item is not None and anchor is None: # Create a new input anchor for the item if none is provided. anchor = item.newInputAnchor() # Update the visibility of the end point indicator. self.sinkIndicator.setVisible(bool(item)) if self.sinkAnchor != anchor: if self.sinkAnchor is not None: self.sinkAnchor.scenePositionChanged.disconnect( self._sinkPosChanged ) self.sinkAnchor = anchor if self.sinkAnchor is not None: self.sinkAnchor.scenePositionChanged.connect( self._sinkPosChanged ) self.__updateCurve() def setChannelNamesVisible(self, visible): """ Set the visibility of the channel name text. """ self.linkTextItem.setVisible(visible) def setSourceName(self, name): """ Set the name of the source (used in channel name text). """ if self.__sourceName != name: self.__sourceName = name self.__updateText() def sourceName(self): """ Return the source name. """ return self.__sourceName def setSinkName(self, name): """ Set the name of the sink (used in channel name text). """ if self.__sinkName != name: self.__sinkName = name self.__updateText() def sinkName(self): """ Return the sink name. """ return self.__sinkName def _sinkPosChanged(self, *arg): self.__updateCurve() def _sourcePosChanged(self, *arg): self.__updateCurve() def __updateCurve(self): self.prepareGeometryChange() self.__boundingRect = None if self.sourceAnchor and self.sinkAnchor: source_pos = self.sourceAnchor.anchorScenePos() sink_pos = self.sinkAnchor.anchorScenePos() source_pos = self.curveItem.mapFromScene(source_pos) sink_pos = self.curveItem.mapFromScene(sink_pos) # Adaptive offset for the curve control points to avoid a # cusp when the two points have the same y coordinate # and are close together delta = source_pos - sink_pos dist = math.sqrt(delta.x() ** 2 + delta.y() ** 2) cp_offset = min(dist / 2.0, 60.0) # TODO: make the curve tangent orthogonal to the anchors path. path = QPainterPath() path.moveTo(source_pos) path.cubicTo(source_pos + QPointF(cp_offset, 0), sink_pos - QPointF(cp_offset, 0), sink_pos) self.curveItem.setCurvePath(path) self.sourceIndicator.setPos(source_pos) self.sinkIndicator.setPos(sink_pos) self.__updateText() else: self.setHoverState(False) self.curveItem.setPath(QPainterPath()) def __updateText(self): self.prepareGeometryChange() self.__boundingRect = None if self.__sourceName or self.__sinkName: if self.__sourceName != self.__sinkName: text = ("<nobr>{0}</nobr> \u2192 <nobr>{1}</nobr>" .format(escape(self.__sourceName), escape(self.__sinkName))) else: # If the names are the same show only one. # Is this right? If the sink has two input channels of the # same type having the name on the link help elucidate # the scheme. text = escape(self.__sourceName) else: text = "" self.linkTextItem.setHtml('<div align="center">{0}</div>' .format(text)) path = self.curveItem.curvePath() # Constrain the text width if it is too long to fit on a single line # between the two ends if not path.isEmpty(): # Use the distance between the start/end points as a measure of # available space diff = path.pointAtPercent(0.0) - path.pointAtPercent(1.0) available_width = math.sqrt(diff.x() ** 2 + diff.y() ** 2) # Get the ideal text width if it was unconstrained doc = self.linkTextItem.document().clone(self) doc.setTextWidth(-1) idealwidth = doc.idealWidth() doc.deleteLater() # Constrain the text width but not below a certain min width minwidth = 100 textwidth = max(minwidth, min(available_width, idealwidth)) self.linkTextItem.setTextWidth(textwidth) else: # Reset the fixed width self.linkTextItem.setTextWidth(-1) if not path.isEmpty(): center = path.pointAtPercent(0.5) angle = path.angleAtPercent(0.5) brect = self.linkTextItem.boundingRect() transform = QTransform() transform.translate(center.x(), center.y()) transform.rotate(-angle) # Center and move above the curve path. transform.translate(-brect.width() / 2, -brect.height()) self.linkTextItem.setTransform(transform) def removeLink(self): self.setSinkItem(None) self.setSourceItem(None) self.__updateCurve() def setHoverState(self, state): if self.hover != state: self.prepareGeometryChange() self.__boundingRect = None self.hover = state self.sinkIndicator.setHoverState(state) self.sourceIndicator.setHoverState(state) self.curveItem.setHoverState(state) self.__updatePen() def hoverEnterEvent(self, event): # Hover enter event happens when the mouse enters any child object # but we only want to show the 'hovered' shadow when the mouse # is over the 'curveItem', so we install self as an event filter # on the LinkCurveItem and listen to its hover events. self.curveItem.installSceneEventFilter(self) return super().hoverEnterEvent(event) def hoverLeaveEvent(self, event): # Remove the event filter to prevent unnecessary work in # scene event filter when not needed self.curveItem.removeSceneEventFilter(self) return super().hoverLeaveEvent(event) def changeEvent(self, event): if event.type() == QEvent.PaletteChange: self.__updatePalette() elif event.type() == QEvent.FontChange: self.__updateFont() super().changeEvent(event) def sceneEventFilter(self, obj, event): if obj is self.curveItem: if event.type() == QEvent.GraphicsSceneHoverEnter: self.setHoverState(True) elif event.type() == QEvent.GraphicsSceneHoverLeave: self.setHoverState(False) return super().sceneEventFilter(obj, event) def boundingRect(self): if self.__boundingRect is None: self.__boundingRect = self.childrenBoundingRect() return self.__boundingRect def shape(self): return self.curveItem.shape() def setEnabled(self, enabled): """ Reimplemented from :class:`QGraphicWidget` Set link enabled state. When disabled the link is rendered with a dashed line. """ # This getter/setter pair override a property from the base class. # They should be renamed to e.g. setLinkEnabled/linkEnabled self.curveItem.setLinkEnabled(enabled) def isEnabled(self): return self.curveItem.isLinkEnabled() def setDynamicEnabled(self, enabled): """ Set the link's dynamic enabled state. If the link is `dynamic` it will be rendered in red/green color respectively depending on the state of the dynamic enabled state. """ if self.__dynamicEnabled != enabled: self.__dynamicEnabled = enabled if self.__dynamic: self.__updatePen() def isDynamicEnabled(self): """ Is the link dynamic enabled. """ return self.__dynamicEnabled def setDynamic(self, dynamic): """ Mark the link as dynamic (i.e. it responds to :func:`setDynamicEnabled`). """ if self.__dynamic != dynamic: self.__dynamic = dynamic self.__updatePen() def isDynamic(self): """ Is the link dynamic. """ return self.__dynamic def setRuntimeState(self, state): """ Style the link appropriate to the LinkItem.State Parameters ---------- state : LinkItem.State """ if self.__state != state: self.__state = state if state & LinkItem.Pending: self.sinkIndicator.setBrush(QBrush(Qt.red)) else: self.sinkIndicator.setBrush(QBrush(QColor("#9CACB4"))) self.__updatePen() def runtimeState(self): return self.__state def __updatePen(self): self.prepareGeometryChange() self.__boundingRect = None if self.__dynamic: if self.__dynamicEnabled: color = QColor(0, 150, 0, 150) else: color = QColor(150, 0, 0, 150) normal = QPen(QBrush(color), 2.0) hover = QPen(QBrush(color.darker(120)), 2.1) else: normal = QPen(QBrush(QColor("#9CACB4")), 2.0) hover = QPen(QBrush(QColor("#7D7D7D")), 2.1) if self.__state & LinkItem.Empty: pen_style = Qt.DashLine else: pen_style = Qt.SolidLine normal.setStyle(pen_style) hover.setStyle(pen_style) if self.hover: pen = hover else: pen = normal self.curveItem.setPen(pen) def __updatePalette(self): self.linkTextItem.setDefaultTextColor( self.palette().color(QPalette.Text)) def __updateFont(self): self.linkTextItem.setFont(self.font())