1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 Jochen Becher
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6 ** This file is part of Qt Creator.
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25
26 #pragma once
27
28 #include <QGraphicsItem>
29
QT_FORWARD_DECLARE_CLASS(QPainterPath)30 QT_FORWARD_DECLARE_CLASS(QPainterPath)
31
32 namespace qmt {
33
34 class IWindable;
35
36 class PathSelectionItem : public QGraphicsItem
37 {
38 class GraphicsHandleItem;
39 friend class GraphicsHandleItem;
40
41 enum HandleStatus {
42 Press,
43 Move,
44 Release,
45 Cancel
46 };
47
48 enum HandleQualifier {
49 None,
50 DeleteHandle
51 };
52
53 public:
54 explicit PathSelectionItem(IWindable *windable, QGraphicsItem *parent = nullptr);
55 ~PathSelectionItem() override;
56
57 QRectF boundingRect() const override;
58 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
59 QPainterPath shape() const override;
60
61 QSizeF pointSize() const { return m_pointSize; }
62 void setPointSize(const QSizeF &size);
63 QList<QPointF> points() const;
64 void setPoints(const QList<QPointF> &points);
65 void setSecondarySelected(bool secondarySelected);
66
67 protected:
68 void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
69
70 private:
71 bool isEndHandle(int pointIndex) const;
72 void update();
73 void moveHandle(int pointIndex, const QPointF &deltaMove, HandleStatus handleStatus,
74 HandleQualifier handleQualifier);
75 void keyPressed(int pointIndex, QKeyEvent *event, const QPointF &pos);
76
77 IWindable *m_windable = nullptr;
78 QSizeF m_pointSize;
79 bool m_isSecondarySelected = false;
80 QList<GraphicsHandleItem *> m_handles;
81 GraphicsHandleItem *m_focusHandleItem = nullptr;
82 QPointF m_originalHandlePos;
83 };
84
85 } // namespace qmt
86