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 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 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 #ifndef QGUIAPPLICATION_H 41 #define QGUIAPPLICATION_H 42 43 #include <QtGui/qtguiglobal.h> 44 #include <QtCore/qcoreapplication.h> 45 #include <QtGui/qwindowdefs.h> 46 #include <QtGui/qinputmethod.h> 47 #include <QtCore/qlocale.h> 48 #include <QtCore/qpoint.h> 49 #include <QtCore/qsize.h> 50 51 QT_BEGIN_NAMESPACE 52 53 54 class QSessionManager; 55 class QGuiApplicationPrivate; 56 class QPlatformNativeInterface; 57 class QPlatformIntegration; 58 class QPalette; 59 class QScreen; 60 class QStyleHints; 61 62 #if defined(qApp) 63 #undef qApp 64 #endif 65 #define qApp (static_cast<QGuiApplication *>(QCoreApplication::instance())) 66 67 #if defined(qGuiApp) 68 #undef qGuiApp 69 #endif 70 #define qGuiApp (static_cast<QGuiApplication *>(QCoreApplication::instance())) 71 72 class Q_GUI_EXPORT QGuiApplication : public QCoreApplication 73 { 74 Q_OBJECT 75 Q_PROPERTY(QIcon windowIcon READ windowIcon WRITE setWindowIcon) 76 Q_PROPERTY(QString applicationDisplayName READ applicationDisplayName WRITE setApplicationDisplayName NOTIFY applicationDisplayNameChanged) 77 Q_PROPERTY(QString desktopFileName READ desktopFileName WRITE setDesktopFileName) 78 Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged) 79 Q_PROPERTY(QString platformName READ platformName STORED false) 80 Q_PROPERTY(bool quitOnLastWindowClosed READ quitOnLastWindowClosed WRITE setQuitOnLastWindowClosed) 81 Q_PROPERTY(QScreen *primaryScreen READ primaryScreen NOTIFY primaryScreenChanged STORED false) 82 83 public: 84 #ifdef Q_QDOC 85 QGuiApplication(int &argc, char **argv); 86 #else 87 QGuiApplication(int &argc, char **argv, int = ApplicationFlags); 88 #endif 89 ~QGuiApplication(); 90 91 static void setApplicationDisplayName(const QString &name); 92 static QString applicationDisplayName(); 93 94 static void setDesktopFileName(const QString &name); 95 static QString desktopFileName(); 96 97 static QWindowList allWindows(); 98 static QWindowList topLevelWindows(); 99 static QWindow *topLevelAt(const QPoint &pos); 100 101 static void setWindowIcon(const QIcon &icon); 102 static QIcon windowIcon(); 103 104 static QString platformName(); 105 106 static QWindow *modalWindow(); 107 108 static QWindow *focusWindow(); 109 static QObject *focusObject(); 110 111 static QScreen *primaryScreen(); 112 static QList<QScreen *> screens(); 113 static QScreen *screenAt(const QPoint &point); 114 115 qreal devicePixelRatio() const; 116 117 #ifndef QT_NO_CURSOR 118 static QCursor *overrideCursor(); 119 static void setOverrideCursor(const QCursor &); 120 static void changeOverrideCursor(const QCursor &); 121 static void restoreOverrideCursor(); 122 #endif 123 124 static QFont font(); 125 static void setFont(const QFont &); 126 127 #ifndef QT_NO_CLIPBOARD 128 static QClipboard *clipboard(); 129 #endif 130 131 static QPalette palette(); 132 static void setPalette(const QPalette &pal); 133 134 static Qt::KeyboardModifiers keyboardModifiers(); 135 static Qt::KeyboardModifiers queryKeyboardModifiers(); 136 static Qt::MouseButtons mouseButtons(); 137 138 static void setLayoutDirection(Qt::LayoutDirection direction); 139 static Qt::LayoutDirection layoutDirection(); 140 isRightToLeft()141 static inline bool isRightToLeft() { return layoutDirection() == Qt::RightToLeft; } isLeftToRight()142 static inline bool isLeftToRight() { return layoutDirection() == Qt::LeftToRight; } 143 144 static QStyleHints *styleHints(); 145 static void setDesktopSettingsAware(bool on); 146 static bool desktopSettingsAware(); 147 148 static QInputMethod *inputMethod(); 149 150 static QPlatformNativeInterface *platformNativeInterface(); 151 152 static QFunctionPointer platformFunction(const QByteArray &function); 153 154 static void setQuitOnLastWindowClosed(bool quit); 155 static bool quitOnLastWindowClosed(); 156 157 static Qt::ApplicationState applicationState(); 158 159 static void setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy policy); 160 static Qt::HighDpiScaleFactorRoundingPolicy highDpiScaleFactorRoundingPolicy(); 161 162 static int exec(); 163 bool notify(QObject *, QEvent *) override; 164 165 #ifndef QT_NO_SESSIONMANAGER 166 // session management 167 bool isSessionRestored() const; 168 QString sessionId() const; 169 QString sessionKey() const; 170 bool isSavingSession() const; 171 172 static bool isFallbackSessionManagementEnabled(); 173 static void setFallbackSessionManagementEnabled(bool); 174 #endif 175 176 static void sync(); 177 Q_SIGNALS: 178 void fontDatabaseChanged(); 179 void screenAdded(QScreen *screen); 180 void screenRemoved(QScreen *screen); 181 void primaryScreenChanged(QScreen *screen); 182 void lastWindowClosed(); 183 void focusObjectChanged(QObject *focusObject); 184 void focusWindowChanged(QWindow *focusWindow); 185 void applicationStateChanged(Qt::ApplicationState state); 186 void layoutDirectionChanged(Qt::LayoutDirection direction); 187 #ifndef QT_NO_SESSIONMANAGER 188 void commitDataRequest(QSessionManager &sessionManager); 189 void saveStateRequest(QSessionManager &sessionManager); 190 #endif 191 void paletteChanged(const QPalette &pal); 192 void applicationDisplayNameChanged(); 193 void fontChanged(const QFont &font); 194 195 protected: 196 bool event(QEvent *) override; 197 bool compressEvent(QEvent *, QObject *receiver, QPostEventList *) override; 198 199 QGuiApplication(QGuiApplicationPrivate &p); 200 201 private: 202 Q_DISABLE_COPY(QGuiApplication) 203 Q_DECLARE_PRIVATE(QGuiApplication) 204 205 Q_PRIVATE_SLOT(d_func(), void _q_updateFocusObject(QObject *object)) 206 207 #ifndef QT_NO_GESTURES 208 friend class QGestureManager; 209 #endif 210 friend class QFontDatabasePrivate; 211 friend class QPlatformIntegration; 212 #ifndef QT_NO_SESSIONMANAGER 213 friend class QPlatformSessionManager; 214 #endif 215 }; 216 217 QT_END_NAMESPACE 218 219 #endif // QGUIAPPLICATION_H 220