Annotation Items (annotationitem)

class orangecanvas.canvas.items.annotationitem.Annotation

Bases: QGraphicsWidget

Base class for annotations in the canvas scheme.

class orangecanvas.canvas.items.annotationitem.TextAnnotation(parent: QGraphicsItem | None = None, **kwargs: Any)

Bases: Annotation

Text annotation item for the canvas scheme.

Text interaction (if enabled) is started by double clicking the item.

editingFinished

Emitted when the editing is finished (i.e. the item loses edit focus).

textEdited

Emitted when the text content changes on user interaction.

contentChanged

Emitted when the text annotation’s contents change (content or contentType changed)

itemChange(self, change: QGraphicsItem.GraphicsItemChange, value: Any) → Any

adjustSize() → None

Resize to a reasonable size.

setFramePen(pen: QPen) → None

Set the frame pen. By default Qt.NoPen is used (i.e. the frame is not shown).

framePen() → QPen

Return the frame pen.

setFrameBrush(brush: QBrush) → None

Set the frame brush.

frameBrush() → QBrush

Return the frame brush.

setPlainText(text: str) → None

Set the annotation text as plain text.

setHtml(text: str) → None

Set the annotation text as html.

setDefaultTextColor(color: QColor) → None

Set the default text color.

setTextMargins(left: int, top: int, right: int, bottom: int) → None

Set the text margins.

textMargins() → Tuple[int, int, int, int]

Return the text margins.

document() → QTextDocument

Return the QTextDocument instance used internally.

mouseDoubleClickEvent(self, event: QGraphicsSceneMouseEvent | None)

startEdit() → None

Start the annotation text edit process.

endEdit() → None

End the annotation edit.

resizeEvent(self, event: QGraphicsSceneResizeEvent | None)

sceneEventFilter(self, watched: QGraphicsItem | None, event: QEvent | None) → bool

changeEvent(self, event: QEvent | None)

contextMenuEvent(self, event: QGraphicsSceneContextMenuEvent | None)

class orangecanvas.canvas.items.annotationitem.ArrowAnnotation(parent: QGraphicsItem | None = None, line: QLineF | None = None, **kwargs: Any)

Bases: Annotation

setAutoAdjustGeometry(autoAdjust: bool) → None

If set to True then the geometry will be adjusted whenever the arrow is changed with setLine. Otherwise the geometry of the item is only updated so the line lies within the geometry() rect (i.e. it only grows). True by default

autoAdjustGeometry() → bool

Should the geometry of the item be adjusted automatically when setLine is called.

setLine(line: QLineF) → None

Set the arrow base line (a QLineF in object coordinates).

line() → QLineF

Return the arrow base line (QLineF in object coordinates).

setColor(color: QColor) → None

Set arrow brush color.

color() → QColor

Return the arrow brush color.

setLineWidth(lineWidth: float) → None

Set the arrow line width.

lineWidth() → float

Return the arrow line width.

adjustGeometry() → None

Adjust the widget geometry to exactly fit the arrow inside while preserving the arrow path scene geometry.

shape(self) → QPainterPath

itemChange(self, change: QGraphicsItem.GraphicsItemChange, value: Any) → Any