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29 
30 #ifndef DESKTOPINPUTSELECTIONCONTROL_P_H
31 #define DESKTOPINPUTSELECTIONCONTROL_P_H
32 
33 //
34 //  W A R N I N G
35 //  -------------
36 //
37 // This file is not part of the Qt API.  It exists purely as an
38 // implementation detail.  This header file may change from version to
39 // version without notice, or even be removed.
40 //
41 // We mean it.
42 //
43 
44 #include <QtCore/qpointer.h>
45 #include <QtCore/qobject.h>
46 #include <QtGui/qimage.h>
47 #include <QtVirtualKeyboard/qvirtualkeyboard_global.h>
48 
49 QT_BEGIN_NAMESPACE
50 
51 class QMouseEvent;
52 class QVirtualKeyboardInputContext;
53 
54 namespace QtVirtualKeyboard {
55 
56 class InputSelectionHandle;
57 
58 class QVIRTUALKEYBOARD_EXPORT DesktopInputSelectionControl : public QObject
59 {
60     Q_OBJECT
61 
62 public:
63     DesktopInputSelectionControl(QObject *parent, QVirtualKeyboardInputContext *inputContext);
~DesktopInputSelectionControl()64     ~DesktopInputSelectionControl() {}
65 
66     void createHandles();
67     void destroyHandles();
68     void setEnabled(bool enable);
69     QImage *handleImage();
70 
71 public Q_SLOTS:
72     void updateAnchorHandlePosition();
73     void updateCursorHandlePosition();
74     void updateVisibility();
75     void reloadGraphics();
76 protected:
77     bool eventFilter(QObject *object, QEvent *event) override;
78 
79 private:
80     QRect anchorHandleRect() const;
81     QRect cursorHandleRect() const;
82     QRect handleRectForCursorRect(const QRectF &cursorRect) const;
83 
84 private:
85     QVirtualKeyboardInputContext *m_inputContext;
86     QSharedPointer<InputSelectionHandle> m_anchorSelectionHandle;
87     QSharedPointer<InputSelectionHandle> m_cursorSelectionHandle;
88     QImage m_handleImage;
89 
90     enum {
91         HandleIsReleased = 0,
92         HandleIsHeld = 1,
93         HandleIsMoving = 2
94     };
95     enum HandleType {
96         AnchorHandle = 0,
97         CursorHandle = 1
98     };
99 
100     unsigned m_handleState : 2;
101     unsigned m_currentDragHandle : 1;
102     unsigned m_enabled : 1;
103     unsigned m_anchorHandleVisible : 1;
104     unsigned m_cursorHandleVisible : 1;
105     unsigned m_eventFilterEnabled : 1;
106     QPoint m_otherSelectionPoint;
107     QVector <QMouseEvent*> m_eventQueue;
108     QPoint m_distanceBetweenMouseAndCursor;
109     QPoint m_handleDragStartedPosition;
110     QSize m_handleWindowSize;
111 };
112 } // namespace QtVirtualKeyboard
113 QT_END_NAMESPACE
114 
115 #endif // DESKTOPINPUTSELECTIONCONTROL_P_H
116