An interactive map canvas item which displays a QgsAnnotation. More...

Inheritance diagram for QgsMapCanvasAnnotationItem:

Public Types
enum	MouseMoveAction { NoAction , MoveMapPosition , MoveFramePosition , ResizeFrameUp , ResizeFrameDown , ResizeFrameLeft , ResizeFrameRight , ResizeFrameLeftUp , ResizeFrameRightUp , ResizeFrameLeftDown , ResizeFrameRightDown }
	Mouse actions for interacting with item. More...

Public Member Functions
	QgsMapCanvasAnnotationItem (QgsAnnotation annotation, QgsMapCanvas mapCanvas)
	Constructor for QgsMapCanvasAnnotationItem.

QgsAnnotation *	annotation ()
	Returns the item's annotation.

const QgsAnnotation *	annotation () const
	Returns the item's annotation.

QRectF	boundingRect () const override

Qt::CursorShape	cursorShapeForAction (MouseMoveAction moveAction) const
	Returns matching cursor shape for a mouse move action.

MouseMoveAction	moveActionForPosition (QPointF pos) const
	Returns the mouse move behavior for a given position in scene coordinates.

void	paint (QPainter *painter) override
	function to be implemented by derived classes

void	updatePosition () override
	called on changed extent or resize event to update position of the item

Public Member Functions inherited from QgsMapCanvasItem
QRectF	boundingRect () const override

QgsRectangle	rect () const
	returns canvas item rectangle in map units

void	setRect (const QgsRectangle &r, bool resetRotation=true)
	sets canvas item rectangle in map units

QPointF	toCanvasCoordinates (const QgsPointXY &point) const
	transformation from map coordinates to screen coordinates

QgsPointXY	toMapCoordinates (QPoint point) const
	transformation from screen coordinates to map coordinates

Additional Inherited Members
Protected Member Functions inherited from QgsMapCanvasItem
	QgsMapCanvasItem (QgsMapCanvas *mapCanvas)
	protected constructor: cannot be constructed directly

	~QgsMapCanvasItem () override

void	paint (QPainter painter, const QStyleOptionGraphicsItem option, QWidget *widget=nullptr) override

bool	setRenderContextVariables (QPainter *p, QgsRenderContext &context) const
	Sets render context parameters.

void	updateCanvas ()
	schedules map canvas for repaint

Protected Attributes inherited from QgsMapCanvasItem
QSizeF	mItemSize
	cached size of the item (to return in boundingRect())

QgsMapCanvas *	mMapCanvas = nullptr
	pointer to map canvas

QgsRectangle	mRect
	cached canvas item rectangle in map coordinates encodes position (xmin,ymax) and size (width/height) used to re-position and re-size the item on zoom/pan while waiting for the renderer to complete.

double	mRectRotation

Detailed Description

An interactive map canvas item which displays a QgsAnnotation.

Member Enumeration Documentation

Mouse actions for interacting with item.

Enumerator
NoAction	No action.
MoveMapPosition	Moving annotation map position.
MoveFramePosition	Moving position of frame relative to annotation.
ResizeFrameUp	Resize frame up.
ResizeFrameDown	Resize frame down.
ResizeFrameLeft	Resize frame left.
ResizeFrameRight	Resize frame right.
ResizeFrameLeftUp	Resize frame left up.
ResizeFrameRightUp	Resize frame right up.
ResizeFrameLeftDown	Resize frame left down.
ResizeFrameRightDown	Resize frame right down.