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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
49QT_BEGIN_NAMESPACE
50
51class QMouseEvent;
52class QVirtualKeyboardInputContext;
53
54namespace QtVirtualKeyboard {
55
56class InputSelectionHandle;
57
58class QVIRTUALKEYBOARD_EXPORT DesktopInputSelectionControl : public QObject
59{
60 Q_OBJECT
61
62public:
63 DesktopInputSelectionControl(QObject *parent, QVirtualKeyboardInputContext *inputContext);
64 ~DesktopInputSelectionControl() {}
65
66 void createHandles();
67 void destroyHandles();
68 void setEnabled(bool enable);
69 QImage *handleImage();
70
71public Q_SLOTS:
72 void updateAnchorHandlePosition();
73 void updateCursorHandlePosition();
74 void updateVisibility();
75 void reloadGraphics();
76protected:
77 bool eventFilter(QObject *object, QEvent *event) override;
78
79private:
80 QRect anchorHandleRect() const;
81 QRect cursorHandleRect() const;
82 QRect handleRectForCursorRect(const QRectF &cursorRect) const;
83
84private:
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
113QT_END_NAMESPACE
114
115#endif // DESKTOPINPUTSELECTIONCONTROL_P_H
116

source code of qtvirtualkeyboard/src/virtualkeyboard/desktopinputselectioncontrol_p.h