qgsmaptoolmodifyannotation.h

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/***************************************************************************
    qgsmaptoolmodifyannotation.h
    ----------------
    copyright            : (C) 2021 by Nyall Dawson
    email                : nyall dot dawson at gmail dot com
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSMAPTOOLMODIFYANNOTATION_H
#define QGSMAPTOOLMODIFYANNOTATION_H
 
#include <optional>
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgsannotationitemnode.h"
#include "qgsannotationmaptool.h"
#include "qgspointxy.h"
#include "qgsrectangle.h"
#include "qobjectuniqueptr.h"
 
#define SIP_NO_FILE
 
class QgsRubberBand;
class QgsRenderedAnnotationItemDetails;
class QgsAnnotationItem;
class QgsAnnotationLayer;
class QgsAnnotationRectItem;
class QgsAnnotationItemNodesSpatialIndex;
class QgsSnapIndicator;
class QgsMapToPixel;
 

class GUI_EXPORT QgsMapToolModifyAnnotation : public QgsAnnotationMapTool
{
    Q_OBJECT
 
  public:
    explicit QgsMapToolModifyAnnotation( QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget );
    ~QgsMapToolModifyAnnotation() override;
 
    void deactivate() override;
    void cadCanvasMoveEvent( QgsMapMouseEvent *event ) override;
    void cadCanvasPressEvent( QgsMapMouseEvent *event ) override;
    void canvasDoubleClickEvent( QgsMapMouseEvent *event ) override;
    void keyPressEvent( QKeyEvent *event ) override;
 
  signals:

    void itemSelected( QgsAnnotationLayer *layer, const QString &itemId );

    void selectionCleared();
 
  private slots:
    void onCanvasRefreshed();
 
  private:
    enum class Action
    {
      NoAction,
      MoveItem,
      MoveNode
    };
 
    void clearHoveredItem();
    void clearSelectedItem();
    void createHoverBand();
    void createHoveredNodeBand();
    void createSelectedItemBand();
 
    void setHoveredItemFromPoint( const QgsPointXY &mapPoint );
    void setHoveredItem( const QgsRenderedAnnotationItemDetails *item, const QgsRectangle &itemMapBounds );

    QSizeF deltaForKeyEvent( QgsAnnotationLayer *layer, const QgsPointXY &originalCanvasPoint, QKeyEvent *event );

    static QgsRectangle reconstructRotatedResizeBounds( const QgsMapToPixel *mapToPixel, double angle, const QgsPointXY &fixedMapPoint, const QgsPointXY &cursorMapPoint );

    static QgsPointXY oppositeVertexMapPoint( const QList<QgsAnnotationItemNode> &nodes, int draggedVertex, bool &found );

    std::optional<QgsRectangle> rotatedResizeLayerBounds( const QgsAnnotationRectItem *rectItem, QgsAnnotationLayer *layer, const QgsPointXY &cursorMapPoint );
 
    Action mCurrentAction = Action::NoAction;
 
    std::unique_ptr<QgsSnapIndicator> mSnapIndicator;
 
    QObjectUniquePtr<QgsRubberBand> mHoverRubberBand;
    std::vector<QObjectUniquePtr<QgsRubberBand>> mHoveredItemNodeRubberBands;
 
    // nodes from the current hovered item, reprojected onto the map canvas' CRS
    QList<QgsAnnotationItemNode> mHoveredItemNodes;
 
    QObjectUniquePtr<QgsRubberBand> mHoveredNodeRubberBand;
 
    QObjectUniquePtr<QgsRubberBand> mSelectedRubberBand;
    QObjectUniquePtr<QgsRubberBand> mTemporaryRubberBand;
 
    QPoint mLastHoverPoint;
    QString mHoveredItemId;
    QString mHoveredItemLayerId;
    QgsRectangle mHoveredItemBounds;
 
    QString mSelectedItemId;
    QString mSelectedItemLayerId;
    QgsRectangle mSelectedItemBounds;
 
    std::unique_ptr<QgsAnnotationItemNodesSpatialIndex> mHoveredItemNodesSpatialIndex;
 
    QgsPointXY mMoveStartPointCanvasCrs;
    QgsPointXY mMoveStartPointLayerCrs;
    QgsPointXY mMoveStartPointPixels;
 
    bool mRefreshSelectedItemAfterRedraw = false;
 
    QgsAnnotationItemNode mTargetNode;
};
 
#endif // QGSMAPTOOLMODIFYANNOTATION_H