1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). |
4 | ** Contact: http://www.qt-project.org/legal |
5 | ** |
6 | ** This file is part of the QtGui module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:LGPL$ |
9 | ** Commercial License Usage |
10 | ** Licensees holding valid commercial Qt licenses may use this file in |
11 | ** accordance with the commercial license agreement provided with the |
12 | ** Software or, alternatively, in accordance with the terms contained in |
13 | ** a written agreement between you and Digia. For licensing terms and |
14 | ** conditions see http://qt.digia.com/licensing. For further information |
15 | ** use the contact form at http://qt.digia.com/contact-us. |
16 | ** |
17 | ** GNU Lesser General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
19 | ** General Public License version 2.1 as published by the Free Software |
20 | ** Foundation and appearing in the file LICENSE.LGPL included in the |
21 | ** packaging of this file. Please review the following information to |
22 | ** ensure the GNU Lesser General Public License version 2.1 requirements |
23 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
24 | ** |
25 | ** In addition, as a special exception, Digia gives you certain additional |
26 | ** rights. These rights are described in the Digia Qt LGPL Exception |
27 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
28 | ** |
29 | ** GNU General Public License Usage |
30 | ** Alternatively, this file may be used under the terms of the GNU |
31 | ** General Public License version 3.0 as published by the Free Software |
32 | ** Foundation and appearing in the file LICENSE.GPL included in the |
33 | ** packaging of this file. Please review the following information to |
34 | ** ensure the GNU General Public License version 3.0 requirements will be |
35 | ** met: http://www.gnu.org/copyleft/gpl.html. |
36 | ** |
37 | ** |
38 | ** $QT_END_LICENSE$ |
39 | ** |
40 | ****************************************************************************/ |
41 | |
42 | #ifndef QWIDGETRESIZEHANDLER_P_H |
43 | #define QWIDGETRESIZEHANDLER_P_H |
44 | |
45 | // |
46 | // W A R N I N G |
47 | // ------------- |
48 | // |
49 | // This file is not part of the Qt API. This header file may |
50 | // change from version to version without notice, or even be |
51 | // removed. |
52 | // |
53 | // We mean it. |
54 | // |
55 | |
56 | #include "QtCore/qobject.h" |
57 | #include "QtCore/qpoint.h" |
58 | |
59 | #ifndef QT_NO_RESIZEHANDLER |
60 | |
61 | QT_BEGIN_NAMESPACE |
62 | |
63 | class QMouseEvent; |
64 | class QKeyEvent; |
65 | |
66 | class Q_GUI_EXPORT QWidgetResizeHandler : public QObject |
67 | { |
68 | Q_OBJECT |
69 | |
70 | public: |
71 | enum Action { |
72 | Move = 0x01, |
73 | Resize = 0x02, |
74 | Any = Move|Resize |
75 | }; |
76 | |
77 | explicit QWidgetResizeHandler(QWidget *parent, QWidget *cw = 0); |
78 | void setActive(bool b) { setActive(Any, b); } |
79 | void setActive(Action ac, bool b); |
80 | bool isActive() const { return isActive(Any); } |
81 | bool isActive(Action ac) const; |
82 | void setMovingEnabled(bool b) { movingEnabled = b; } |
83 | bool isMovingEnabled() const { return movingEnabled; } |
84 | |
85 | bool isButtonDown() const { return buttonDown; } |
86 | |
87 | void setExtraHeight(int h) { extrahei = h; } |
88 | void setSizeProtection(bool b) { sizeprotect = b; } |
89 | |
90 | void setFrameWidth(int w) { fw = w; } |
91 | |
92 | void doResize(); |
93 | void doMove(); |
94 | |
95 | Q_SIGNALS: |
96 | void activate(); |
97 | |
98 | protected: |
99 | bool eventFilter(QObject *o, QEvent *e); |
100 | void mouseMoveEvent(QMouseEvent *e); |
101 | void keyPressEvent(QKeyEvent *e); |
102 | |
103 | private: |
104 | Q_DISABLE_COPY(QWidgetResizeHandler) |
105 | |
106 | enum MousePosition { |
107 | Nowhere, |
108 | TopLeft, BottomRight, BottomLeft, TopRight, |
109 | Top, Bottom, Left, Right, |
110 | Center |
111 | }; |
112 | |
113 | QWidget *widget; |
114 | QWidget *childWidget; |
115 | QPoint moveOffset; |
116 | QPoint invertedMoveOffset; |
117 | MousePosition mode; |
118 | int fw; |
119 | int extrahei; |
120 | int range; |
121 | uint buttonDown :1; |
122 | uint moveResizeMode :1; |
123 | uint activeForResize :1; |
124 | uint sizeprotect :1; |
125 | uint movingEnabled :1; |
126 | uint activeForMove :1; |
127 | |
128 | void setMouseCursor(MousePosition m); |
129 | bool isMove() const { |
130 | return moveResizeMode && mode == Center; |
131 | } |
132 | bool isResize() const { |
133 | return moveResizeMode && !isMove(); |
134 | } |
135 | }; |
136 | |
137 | QT_END_NAMESPACE |
138 | |
139 | #endif // QT_NO_RESIZEHANDLER |
140 | |
141 | #endif // QWIDGETRESIZEHANDLER_P_H |
142 | |