1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtWidgets 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 The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/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 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 // 41 // W A R N I N G 42 // ------------- 43 // 44 // This file is not part of the Qt API. It exists for the convenience 45 // of other Qt classes. This header file may change from version to 46 // version without notice, or even be removed. 47 // 48 // We mean it. 49 // 50 51 #ifndef QDESKTOPWIDGET_P_H 52 #define QDESKTOPWIDGET_P_H 53 54 #include <QtWidgets/private/qtwidgetsglobal_p.h> 55 #include "QDesktopWidget" 56 #include "private/qwidget_p.h" 57 58 #include <QtCore/qalgorithms.h> 59 #include <QtGui/qscreen.h> 60 61 QT_BEGIN_NAMESPACE 62 63 class QDesktopScreenWidget : public QWidget { 64 Q_OBJECT 65 public: 66 explicit QDesktopScreenWidget(QScreen *screen, const QRect &geometry); 67 68 int screenNumber() const; 69 void setScreenGeometry(const QRect &geometry); 70 assignedScreen()71 QScreen *assignedScreen() const { return m_screen.data(); } screenGeometry()72 QRect screenGeometry() const { return m_geometry; } 73 74 private: 75 // The widget updates its screen and geometry automatically. We need to save them separately 76 // to detect changes, and trigger the appropriate signals. 77 const QPointer<QScreen> m_screen; 78 QRect m_geometry; 79 }; 80 81 class QDesktopWidgetPrivate : public QWidgetPrivate { Q_DECLARE_PUBLIC(QDesktopWidget)82 Q_DECLARE_PUBLIC(QDesktopWidget) 83 84 public: 85 ~QDesktopWidgetPrivate() { qDeleteAll(screens); } 86 void _q_updateScreens(); 87 void _q_availableGeometryChanged(); 88 QDesktopScreenWidget *widgetForScreen(QScreen *qScreen) const; 89 90 static bool isVirtualDesktop(); 91 92 static QRect geometry(); 93 static QSize size(); 94 static int width(); 95 static int height(); 96 97 static int numScreens(); 98 static int primaryScreen(); 99 100 static int screenNumber(const QWidget *widget = nullptr); 101 static int screenNumber(const QPoint &); 102 103 static QScreen *screen(int screenNo = -1); 104 105 static const QRect screenGeometry(int screen = -1); 106 static const QRect screenGeometry(const QWidget *widget); screenGeometry(const QPoint & point)107 static const QRect screenGeometry(const QPoint &point) 108 { return screenGeometry(screenNumber(point)); } 109 110 static const QRect availableGeometry(int screen = -1); 111 static const QRect availableGeometry(const QWidget *widget); availableGeometry(const QPoint & point)112 static const QRect availableGeometry(const QPoint &point) 113 { return availableGeometry(screenNumber(point)); } 114 115 QList<QDesktopScreenWidget *> screens; 116 }; 117 118 QT_END_NAMESPACE 119 120 #endif // QDESKTOPWIDGET_QPA_P_H 121