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111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/***************************************************************************
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qgsmapcanvasannotationitem.h
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----------------------------
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begin : January 2017
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copyright : (C) 2017 by Nyall Dawson
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email : nyall dot dawson at gmail dot com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSMAPCANVASANNOTATIONITEM_H
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#define QGSMAPCANVASANNOTATIONITEM_H
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#include "qgsmapcanvasitem.h"
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#include "qgis_gui.h"
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class QgsAnnotation;
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/**
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* \class QgsMapCanvasAnnotationItem
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* \ingroup gui
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* An interactive map canvas item which displays a QgsAnnotation.
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* \since QGIS 3.0
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*/
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class GUI_EXPORT QgsMapCanvasAnnotationItem: public QObject, public QgsMapCanvasItem
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{
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Q_OBJECT
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public:
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//! Mouse actions for interacting with item
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enum MouseMoveAction
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{
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NoAction, //!< No action
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MoveMapPosition, //!< Moving annotation map position
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MoveFramePosition, //!< Moving position of frame relative to annotation
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ResizeFrameUp, //!< Resize frame up
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ResizeFrameDown, //!< Resize frame down
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ResizeFrameLeft, //!< Resize frame left
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ResizeFrameRight, //!< Resize frame right
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ResizeFrameLeftUp, //!< Resize frame left up
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ResizeFrameRightUp, //!< Resize frame right up
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ResizeFrameLeftDown, //!< Resize frame left down
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ResizeFrameRightDown //!< Resize frame right down
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};
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/**
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* Constructor for QgsMapCanvasAnnotationItem.
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*/
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QgsMapCanvasAnnotationItem( QgsAnnotation *annotation SIP_TRANSFER, QgsMapCanvas *mapCanvas SIP_TRANSFERTHIS );
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/**
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* Returns the item's annotation.
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* \note not available in Python bindings
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*/
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const QgsAnnotation *annotation() const { return mAnnotation; } SIP_SKIP
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/**
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* Returns the item's annotation.
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*/
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QgsAnnotation *annotation() { return mAnnotation; }
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void updatePosition() override;
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QRectF boundingRect() const override;
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void paint( QPainter *painter ) override;
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/**
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* Returns the mouse move behavior for a given position in scene coordinates
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*/
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MouseMoveAction moveActionForPosition( QPointF pos ) const;
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/**
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* Returns matching cursor shape for a mouse move action.
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*/
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Qt::CursorShape cursorShapeForAction( MouseMoveAction moveAction ) const;
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private slots:
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void updateBoundingRect();
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void onCanvasLayersChanged();
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//! Sets a feature for the current map position
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void setFeatureForMapPosition();
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private:
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//! Draws selection handles around the item
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void drawSelectionBoxes( QPainter *p ) const;
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//! Returns the symbol size scaled in (mapcanvas) pixels. Used for the counding rect calculation
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double scaledSymbolSize() const;
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QgsAnnotation *mAnnotation = nullptr;
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//! Bounding rect (including item frame and balloon)
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QRectF mBoundingRect;
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};
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#endif // QGSMAPCANVASANNOTATIONITEM_H
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