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39 | |
40 | #ifndef QWIDGETRESIZEHANDLER_P_H |
41 | #define QWIDGETRESIZEHANDLER_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. This header file may |
48 | // change from version to version without notice, or even be |
49 | // removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include <QtWidgets/private/qtwidgetsglobal_p.h> |
55 | #include "QtCore/qobject.h" |
56 | #include "QtCore/qpoint.h" |
57 | |
58 | QT_REQUIRE_CONFIG(resizehandler); |
59 | |
60 | QT_BEGIN_NAMESPACE |
61 | |
62 | class QMouseEvent; |
63 | class QKeyEvent; |
64 | |
65 | class Q_WIDGETS_EXPORT QWidgetResizeHandler : public QObject |
66 | { |
67 | Q_OBJECT |
68 | |
69 | public: |
70 | enum Action { |
71 | Move = 0x01, |
72 | Resize = 0x02, |
73 | Any = Move|Resize |
74 | }; |
75 | |
76 | explicit QWidgetResizeHandler(QWidget *parent, QWidget *cw = nullptr); |
77 | void setActive(bool b) { setActive(ac: Any, b); } |
78 | void setActive(Action ac, bool b); |
79 | bool isActive() const { return isActive(ac: Any); } |
80 | bool isActive(Action ac) const; |
81 | void setMovingEnabled(bool b) { movingEnabled = b; } |
82 | bool isMovingEnabled() const { return movingEnabled; } |
83 | |
84 | bool isButtonDown() const { return buttonDown; } |
85 | |
86 | void setExtraHeight(int h) { extrahei = h; } |
87 | void setSizeProtection(bool b) { sizeprotect = b; } |
88 | |
89 | void setFrameWidth(int w) { fw = w; } |
90 | |
91 | void doResize(); |
92 | void doMove(); |
93 | |
94 | Q_SIGNALS: |
95 | void activate(); |
96 | |
97 | protected: |
98 | bool eventFilter(QObject *o, QEvent *e) override; |
99 | void mouseMoveEvent(QMouseEvent *e); |
100 | void keyPressEvent(QKeyEvent *e); |
101 | |
102 | private: |
103 | Q_DISABLE_COPY_MOVE(QWidgetResizeHandler) |
104 | |
105 | enum MousePosition { |
106 | Nowhere, |
107 | TopLeft, BottomRight, BottomLeft, TopRight, |
108 | Top, Bottom, Left, Right, |
109 | Center |
110 | }; |
111 | |
112 | QWidget *widget; |
113 | QWidget *childWidget; |
114 | QPoint moveOffset; |
115 | QPoint invertedMoveOffset; |
116 | MousePosition mode; |
117 | int fw; |
118 | int extrahei; |
119 | int range; |
120 | uint buttonDown :1; |
121 | uint moveResizeMode :1; |
122 | uint activeForResize :1; |
123 | uint sizeprotect :1; |
124 | uint movingEnabled :1; |
125 | uint activeForMove :1; |
126 | |
127 | void setMouseCursor(MousePosition m); |
128 | bool isMove() const { |
129 | return moveResizeMode && mode == Center; |
130 | } |
131 | bool isResize() const { |
132 | return moveResizeMode && !isMove(); |
133 | } |
134 | }; |
135 | |
136 | QT_END_NAMESPACE |
137 | |
138 | #endif // QWIDGETRESIZEHANDLER_P_H |
139 | |