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39
40#ifndef QAPPLICATION_H
41#define QAPPLICATION_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtCore/qcoreapplication.h>
45#include <QtGui/qwindowdefs.h>
46#include <QtCore/qpoint.h>
47#include <QtCore/qsize.h>
48#include <QtGui/qcursor.h>
49#ifdef QT_INCLUDE_COMPAT
50# include <QtWidgets/qdesktopwidget.h>
51#endif
52#include <QtGui/qguiapplication.h>
53
54QT_BEGIN_NAMESPACE
55
56
57class QDesktopWidget;
58class QStyle;
59class QEventLoop;
60class QIcon;
61template <typename T> class QList;
62class QLocale;
63class QPlatformNativeInterface;
64
65class QApplication;
66class QApplicationPrivate;
67#if defined(qApp)
68#undef qApp
69#endif
70#define qApp (static_cast<QApplication *>(QCoreApplication::instance()))
71
72class Q_WIDGETS_EXPORT QApplication : public QGuiApplication
73{
74 Q_OBJECT
75 Q_PROPERTY(QIcon windowIcon READ windowIcon WRITE setWindowIcon)
76 Q_PROPERTY(int cursorFlashTime READ cursorFlashTime WRITE setCursorFlashTime)
77 Q_PROPERTY(int doubleClickInterval READ doubleClickInterval WRITE setDoubleClickInterval)
78 Q_PROPERTY(int keyboardInputInterval READ keyboardInputInterval WRITE setKeyboardInputInterval)
79#if QT_CONFIG(wheelevent)
80 Q_PROPERTY(int wheelScrollLines READ wheelScrollLines WRITE setWheelScrollLines)
81#endif
82#if QT_DEPRECATED_SINCE(5, 15)
83 Q_PROPERTY(QSize globalStrut READ globalStrut WRITE setGlobalStrut)
84#endif
85 Q_PROPERTY(int startDragTime READ startDragTime WRITE setStartDragTime)
86 Q_PROPERTY(int startDragDistance READ startDragDistance WRITE setStartDragDistance)
87#ifndef QT_NO_STYLE_STYLESHEET
88 Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
89#endif
90 Q_PROPERTY(bool autoSipEnabled READ autoSipEnabled WRITE setAutoSipEnabled)
91
92public:
93#ifdef Q_QDOC
94 QApplication(int &argc, char **argv);
95#else
96 QApplication(int &argc, char **argv, int = ApplicationFlags);
97#endif
98 virtual ~QApplication();
99
100 static QStyle *style();
101 static void setStyle(QStyle*);
102 static QStyle *setStyle(const QString&);
103 enum ColorSpec { NormalColor=0, CustomColor=1, ManyColor=2 };
104#if QT_DEPRECATED_SINCE(5, 8)
105 QT_DEPRECATED static int colorSpec();
106 QT_DEPRECATED static void setColorSpec(int);
107#endif // QT_DEPRECATED_SINCE(5, 8)
108#if QT_DEPRECATED_SINCE(5, 0)
109 QT_DEPRECATED static inline void setGraphicsSystem(const QString &) {}
110#endif
111
112 using QGuiApplication::palette;
113 static QPalette palette(const QWidget *);
114 static QPalette palette(const char *className);
115 static void setPalette(const QPalette &, const char* className = nullptr);
116 static QFont font();
117 static QFont font(const QWidget*);
118 static QFont font(const char *className);
119 static void setFont(const QFont &, const char* className = nullptr);
120 static QFontMetrics fontMetrics();
121
122#if QT_VERSION < 0x060000 // remove these forwarders in Qt 6
123 static void setWindowIcon(const QIcon &icon);
124 static QIcon windowIcon();
125#endif
126
127 static QWidgetList allWidgets();
128 static QWidgetList topLevelWidgets();
129
130 static QDesktopWidget *desktop();
131
132 static QWidget *activePopupWidget();
133 static QWidget *activeModalWidget();
134 static QWidget *focusWidget();
135
136 static QWidget *activeWindow();
137 static void setActiveWindow(QWidget* act);
138
139 static QWidget *widgetAt(const QPoint &p);
140 static inline QWidget *widgetAt(int x, int y) { return widgetAt(QPoint(x, y)); }
141 static QWidget *topLevelAt(const QPoint &p);
142 static inline QWidget *topLevelAt(int x, int y) { return topLevelAt(QPoint(x, y)); }
143
144#if QT_DEPRECATED_SINCE(5, 0)
145 QT_DEPRECATED static inline void syncX() {}
146#endif
147 static void beep();
148 static void alert(QWidget *widget, int duration = 0);
149
150 static void setCursorFlashTime(int);
151 static int cursorFlashTime();
152
153 static void setDoubleClickInterval(int);
154 static int doubleClickInterval();
155
156 static void setKeyboardInputInterval(int);
157 static int keyboardInputInterval();
158
159#if QT_CONFIG(wheelevent)
160 static void setWheelScrollLines(int);
161 static int wheelScrollLines();
162#endif
163#if QT_DEPRECATED_SINCE(5, 15)
164 static void setGlobalStrut(const QSize &);
165 static QSize globalStrut();
166#endif
167
168 static void setStartDragTime(int ms);
169 static int startDragTime();
170 static void setStartDragDistance(int l);
171 static int startDragDistance();
172
173 static bool isEffectEnabled(Qt::UIEffect);
174 static void setEffectEnabled(Qt::UIEffect, bool enable = true);
175
176#if QT_DEPRECATED_SINCE(5, 0)
177 QT_DEPRECATED static QLocale keyboardInputLocale()
178 { return qApp ? QGuiApplication::inputMethod()->locale() : QLocale::c(); }
179 QT_DEPRECATED static Qt::LayoutDirection keyboardInputDirection()
180 { return qApp ? QGuiApplication::inputMethod()->inputDirection() : Qt::LeftToRight; }
181#endif
182
183 static int exec();
184 bool notify(QObject *, QEvent *) override;
185
186#ifdef QT_KEYPAD_NAVIGATION
187# if QT_DEPRECATED_SINCE(5, 13)
188 static QT_DEPRECATED_X ("Use QApplication::setNavigationMode() instead")
189 void setKeypadNavigationEnabled(bool);
190 static QT_DEPRECATED_X ("Use QApplication::navigationMode() instead")
191 bool keypadNavigationEnabled();
192# endif
193 static void setNavigationMode(Qt::NavigationMode mode);
194 static Qt::NavigationMode navigationMode();
195#endif
196
197Q_SIGNALS:
198 void focusChanged(QWidget *old, QWidget *now);
199
200public:
201 QString styleSheet() const;
202public Q_SLOTS:
203#ifndef QT_NO_STYLE_STYLESHEET
204 void setStyleSheet(const QString& sheet);
205#endif
206 void setAutoSipEnabled(const bool enabled);
207 bool autoSipEnabled() const;
208 static void closeAllWindows();
209 static void aboutQt();
210
211protected:
212 bool event(QEvent *) override;
213 bool compressEvent(QEvent *, QObject *receiver, QPostEventList *) override;
214
215private:
216 Q_DISABLE_COPY(QApplication)
217 Q_DECLARE_PRIVATE(QApplication)
218
219 friend class QGraphicsWidget;
220 friend class QGraphicsItem;
221 friend class QGraphicsScene;
222 friend class QGraphicsScenePrivate;
223 friend class QWidget;
224 friend class QWidgetPrivate;
225 friend class QWidgetWindow;
226 friend class QTranslator;
227 friend class QWidgetAnimator;
228#ifndef QT_NO_SHORTCUT
229 friend class QShortcut;
230 friend class QLineEdit;
231 friend class QWidgetTextControl;
232#endif
233 friend class QAction;
234
235#ifndef QT_NO_GESTURES
236 friend class QGestureManager;
237#endif
238};
239
240QT_END_NAMESPACE
241
242#endif // QAPPLICATION_H
243

source code of qtbase/src/widgets/kernel/qapplication.h