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Diffstat (limited to 'src/gui/kernel/qapplication.cpp')
| -rw-r--r-- | src/gui/kernel/qapplication.cpp | 5051 |
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diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp new file mode 100644 index 0000000000..1bbb0190c2 --- /dev/null +++ b/src/gui/kernel/qapplication.cpp @@ -0,0 +1,5051 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qabstracteventdispatcher.h" +#include "qaccessible.h" +#include "qapplication.h" +#include "qclipboard.h" +#include "qcursor.h" +#include "qdesktopwidget.h" +#include "qdir.h" +#include "qevent.h" +#include "qfile.h" +#include "qfileinfo.h" +#include "qgraphicsscene.h" +#include "qhash.h" +#include "qset.h" +#include "qlayout.h" +#include "qsessionmanager.h" +#include "qstyle.h" +#include "qstylefactory.h" +#include "qtextcodec.h" +#include "qtranslator.h" +#include "qvariant.h" +#include "qwidget.h" +#include "qdnd_p.h" +#include "qcolormap.h" +#include "qdebug.h" +#include "private/qgraphicssystemfactory_p.h" +#include "private/qstylesheetstyle_p.h" +#include "private/qstyle_p.h" +#include "qmessagebox.h" +#include <QtGui/qgraphicsproxywidget.h> + +#include "qinputcontext.h" +#include "qkeymapper_p.h" + +#ifdef Q_WS_X11 +#include <private/qt_x11_p.h> +#include "qinputcontextfactory.h" +#endif + +#include <qthread.h> +#include <private/qthread_p.h> + +#include <private/qfont_p.h> + +#include <stdlib.h> + +#include "qapplication_p.h" +#include "qwidget_p.h" + +#include "qapplication.h" + +#ifdef Q_OS_WINCE +#include "qdatetime.h" +#include "qguifunctions_wince.h" +extern bool qt_wince_is_smartphone(); //qguifunctions_wince.cpp +extern bool qt_wince_is_mobile(); //qguifunctions_wince.cpp +extern bool qt_wince_is_pocket_pc(); //qguifunctions_wince.cpp +#endif + +//#define ALIEN_DEBUG + +static void initResources() +{ +#ifdef Q_OS_WINCE + Q_INIT_RESOURCE(qstyle_wince); +#else + Q_INIT_RESOURCE(qstyle); +#endif + +#if !defined(QT_NO_DIRECT3D) && defined(Q_WS_WIN) + Q_INIT_RESOURCE(qpaintengine_d3d); +#endif + Q_INIT_RESOURCE(qmessagebox); +#if !defined(QT_NO_PRINTDIALOG) + Q_INIT_RESOURCE(qprintdialog); +#endif + +} + +QT_BEGIN_NAMESPACE + +extern void qt_call_post_routines(); + +int QApplicationPrivate::app_compile_version = 0x040000; //we don't know exactly, but it's at least 4.0.0 + +QApplication::Type qt_appType=QApplication::Tty; +QApplicationPrivate *QApplicationPrivate::self = 0; + +QInputContext *QApplicationPrivate::inputContext; + +bool QApplicationPrivate::quitOnLastWindowClosed = true; + +#ifdef Q_OS_WINCE +int QApplicationPrivate::autoMaximizeThreshold = -1; +bool QApplicationPrivate::autoSipEnabled = false; +#endif + +QApplicationPrivate::QApplicationPrivate(int &argc, char **argv, QApplication::Type type) + : QCoreApplicationPrivate(argc, argv) +{ + application_type = type; + qt_appType = type; + +#ifndef QT_NO_SESSIONMANAGER + is_session_restored = false; +#endif + + quitOnLastWindowClosed = true; + +#ifdef QT3_SUPPORT + qt_compat_used = 0; + qt_compat_resolved = 0; + qt_tryAccelEvent = 0; + qt_tryComposeUnicode = 0; + qt_dispatchAccelEvent = 0; +#endif +#if defined(Q_WS_QWS) && !defined(QT_NO_DIRECTPAINTER) + directPainters = 0; +#endif + + if (!self) + self = this; +} + +QApplicationPrivate::~QApplicationPrivate() +{ + if (self == this) + self = 0; +} + +/*! + \class QApplication + \brief The QApplication class manages the GUI application's control + flow and main settings. + + \ingroup application + \mainclass + + It contains the main event loop, where all events from the window + system and other sources are processed and dispatched. It also + handles the application's initialization and finalization, and + provides session management. It also handles most system-wide and + application-wide settings. + + For any GUI application that uses Qt, there is precisely one + QApplication object, no matter whether the application has 0, 1, 2 + or more windows at any time. For non-GUI Qt applications, use + QCoreApplication instead, which doesn't depend on the \l QtGui + library. + + The QApplication object is accessible through the instance() + function which return a pointer equivalent to the global qApp + pointer. + + QApplication's main areas of responsibility are: + \list + + \o It initializes the application with the user's desktop settings + such as palette(), font() and doubleClickInterval(). It keeps track + of these properties in case the user changes the desktop globally, for + example through some kind of control panel. + + \o It performs event handling, meaning that it receives events + from the underlying window system and dispatches them to the relevant + widgets. By using sendEvent() and postEvent() you can send your own + events to widgets. + + \o It parses common command line arguments and sets its internal + state accordingly. See the \link QApplication::QApplication() + constructor documentation\endlink below for more details about this. + + \o It defines the application's look and feel, which is + encapsulated in a QStyle object. This can be changed at runtime + with setStyle(). + + \o It specifies how the application is to allocate colors. + See setColorSpec() for details. + + \o It provides localization of strings that are visible to the user + via translate(). + + \o It provides some magical objects like the desktop() and the + clipboard(). + + \o It knows about the application's windows. You can ask which + widget is at a certain position using widgetAt(), get a list of + topLevelWidgets() and closeAllWindows(), etc. + + \o It manages the application's mouse cursor handling, + see setOverrideCursor() + + \o On the X window system, it provides functions to flush and sync + the communication stream, see flushX() and syncX(). + + \o It provides support for sophisticated \link + session.html session management \endlink. This makes it possible + for applications to terminate gracefully when the user logs out, to + cancel a shutdown process if termination isn't possible and even to + preserve the entire application's state for a future session. See + isSessionRestored(), sessionId() and commitData() and saveState() + for details. + + \endlist + + Since the QApplication object does so much initialization, it + \e{must} be created before any other objects related to the user + interface are created. + + Since it also deals with common command line arguments, it is + usually a good idea to create it \e before any interpretation or + modification of \c argv is done in the application itself. + + \table + \header \o{2,1} Groups of functions + \row + \o System settings + \o + desktopSettingsAware(), + setDesktopSettingsAware(), + cursorFlashTime(), + setCursorFlashTime(), + doubleClickInterval(), + setDoubleClickInterval(), + setKeyboardInputInterval(), + wheelScrollLines(), + setWheelScrollLines(), + palette(), + setPalette(), + font(), + setFont(), + fontMetrics(). + + \row + \o Event handling + \o + exec(), + processEvents(), + exit(), + quit(). + sendEvent(), + postEvent(), + sendPostedEvents(), + removePostedEvents(), + hasPendingEvents(), + notify(), + macEventFilter(), + qwsEventFilter(), + x11EventFilter(), + x11ProcessEvent(), + winEventFilter(). + + \row + \o GUI Styles + \o + style(), + setStyle(). + + \row + \o Color usage + \o + colorSpec(), + setColorSpec(), + qwsSetCustomColors(). + + \row + \o Text handling + \o + installTranslator(), + removeTranslator() + translate(). + + \row + \o Widgets + \o + allWidgets(), + topLevelWidgets(), + desktop(), + activePopupWidget(), + activeModalWidget(), + clipboard(), + focusWidget(), + winFocus(), + activeWindow(), + widgetAt(). + + \row + \o Advanced cursor handling + \o + overrideCursor(), + setOverrideCursor(), + restoreOverrideCursor(). + + \row + \o X Window System synchronization + \o + flushX(), + syncX(). + + \row + \o Session management + \o + isSessionRestored(), + sessionId(), + commitData(), + saveState(). + + \row + \o Miscellaneous + \o + closeAllWindows(), + startingUp(), + closingDown(), + type(). + \endtable + + \sa QCoreApplication, QAbstractEventDispatcher, QEventLoop, QSettings +*/ + +/*! + \enum QApplication::Type + + \value Tty a console application + \value GuiClient a GUI client application + \value GuiServer a GUI server application (for Qt for Embedded Linux) +*/ + +/*! + \enum QApplication::ColorSpec + + \value NormalColor the default color allocation policy + \value CustomColor the same as NormalColor for X11; allocates colors + to a palette on demand under Windows + \value ManyColor the right choice for applications that use thousands of + colors + + See setColorSpec() for full details. +*/ + +/*! + \fn QWidget *QApplication::topLevelAt(const QPoint &point) + + Returns the top-level widget at the given \a point; returns 0 if + there is no such widget. +*/ +/*! + \fn QWidget *QApplication::topLevelAt(int x, int y) + + \overload + + Returns the top-level widget at the point (\a{x}, \a{y}); returns + 0 if there is no such widget. +*/ + + +/* + The qt_init() and qt_cleanup() functions are implemented in the + qapplication_xyz.cpp file. +*/ + +void qt_init(QApplicationPrivate *priv, int type +#ifdef Q_WS_X11 + , Display *display = 0, Qt::HANDLE visual = 0, Qt::HANDLE colormap = 0 +#endif + ); +void qt_cleanup(); + +Qt::MouseButtons QApplicationPrivate::mouse_buttons = Qt::NoButton; +Qt::KeyboardModifiers QApplicationPrivate::modifier_buttons = Qt::NoModifier; + +QStyle *QApplicationPrivate::app_style = 0; // default application style + +#ifndef QT_NO_STYLE_STYLESHEET +QString QApplicationPrivate::styleSheet; // default application stylesheet +#endif +QPointer<QWidget> QApplicationPrivate::leaveAfterRelease = 0; + +int QApplicationPrivate::app_cspec = QApplication::NormalColor; +QPalette *QApplicationPrivate::app_pal = 0; // default application palette +QPalette *QApplicationPrivate::sys_pal = 0; // default system palette +QPalette *QApplicationPrivate::set_pal = 0; // default palette set by programmer + +QGraphicsSystem *QApplicationPrivate::graphics_system = 0; // default graphics system +QString QApplicationPrivate::graphics_system_name; // graphics system id - for delayed initialization + +Q_GLOBAL_STATIC(QMutex, applicationFontMutex); +QFont *QApplicationPrivate::app_font = 0; // default application font +QFont *QApplicationPrivate::sys_font = 0; // default system font +QFont *QApplicationPrivate::set_font = 0; // default font set by programmer + +QIcon *QApplicationPrivate::app_icon = 0; +QWidget *QApplicationPrivate::main_widget = 0; // main application widget +QWidget *QApplicationPrivate::focus_widget = 0; // has keyboard input focus +QWidget *QApplicationPrivate::hidden_focus_widget = 0; // will get keyboard input focus after show() +QWidget *QApplicationPrivate::active_window = 0; // toplevel with keyboard focus +bool QApplicationPrivate::obey_desktop_settings = true; // use winsys resources +int QApplicationPrivate::cursor_flash_time = 1000; // text caret flash time +int QApplicationPrivate::mouse_double_click_time = 400; // mouse dbl click limit +int QApplicationPrivate::keyboard_input_time = 400; // keyboard input interval +#ifndef QT_NO_WHEELEVENT +int QApplicationPrivate::wheel_scroll_lines; // number of lines to scroll +#endif +bool qt_is_gui_used; +bool Q_GUI_EXPORT qt_tab_all_widgets = true; +bool qt_in_tab_key_event = false; +int qt_antialiasing_threshold = -1; +static int drag_time = 500; +static int drag_distance = 4; +static Qt::LayoutDirection layout_direction = Qt::LeftToRight; +QSize QApplicationPrivate::app_strut = QSize(0,0); // no default application strut +bool QApplicationPrivate::animate_ui = true; +bool QApplicationPrivate::animate_menu = false; +bool QApplicationPrivate::fade_menu = false; +bool QApplicationPrivate::animate_combo = false; +bool QApplicationPrivate::animate_tooltip = false; +bool QApplicationPrivate::fade_tooltip = false; +bool QApplicationPrivate::animate_toolbox = false; +bool QApplicationPrivate::widgetCount = false; +QString* QApplicationPrivate::styleOverride = 0; +#if defined(Q_WS_WIN) && !defined(Q_OS_WINCE) +bool QApplicationPrivate::inSizeMove = false; +#endif +#ifdef QT_KEYPAD_NAVIGATION +bool QApplicationPrivate::keypadNavigation = false; +QWidget *QApplicationPrivate::oldEditFocus = 0; +#endif + +bool qt_tabletChokeMouse = false; +static bool force_reverse = false; + +static inline bool isAlien(QWidget *widget) +{ + if (!widget) + return false; +#ifdef Q_WS_MAC // Fake alien behavior on the Mac :) + return !widget->isWindow() && widget->window()->testAttribute(Qt::WA_DontShowOnScreen); +#else + return !widget->internalWinId(); +#endif +} + +// ######## move to QApplicationPrivate +// Default application palettes and fonts (per widget type) + +typedef QHash<QByteArray, QPalette> PaletteHash; +Q_GLOBAL_STATIC(PaletteHash, app_palettes) +PaletteHash *qt_app_palettes_hash() +{ + return app_palettes(); +} + +typedef QHash<QByteArray, QFont> FontHash; +Q_GLOBAL_STATIC(FontHash, app_fonts) +FontHash *qt_app_fonts_hash() +{ + return app_fonts(); +} + +QWidgetList *QApplicationPrivate::popupWidgets = 0; // has keyboard input focus + +QDesktopWidget *qt_desktopWidget = 0; // root window widgets +#ifndef QT_NO_CLIPBOARD +QClipboard *qt_clipboard = 0; // global clipboard object +#endif +QWidgetList * qt_modal_stack=0; // stack of modal widgets + +/*! + \internal +*/ +void QApplicationPrivate::process_cmdline() +{ + Q_Q(QApplication); + Q_UNUSED(q);// only static members being used. + // process platform-indep command line + if (!qt_is_gui_used || !argc) + return; + + int i, j; + + j = 1; + for (i=1; i<argc; i++) { // if you add anything here, modify QCoreApplication::arguments() + if (argv[i] && *argv[i] != '-') { + argv[j++] = argv[i]; + continue; + } + QByteArray arg = argv[i]; + arg = arg; + QString s; + if (arg == "-qdevel" || arg == "-qdebug") { + // obsolete argument + } else if (arg.indexOf("-style=", 0) != -1) { + s = QString::fromLocal8Bit(arg.right(arg.length() - 7).toLower()); + } else if (arg == "-style" && i < argc-1) { + s = QString::fromLocal8Bit(argv[++i]).toLower(); +#ifndef QT_NO_SESSIONMANAGER + } else if (arg == "-session" && i < argc-1) { + ++i; + if (argv[i] && *argv[i]) { + session_id = QString::fromLatin1(argv[i]); + int p = session_id.indexOf(QLatin1Char('_')); + if (p >= 0) { + session_key = session_id.mid(p +1); + session_id = session_id.left(p); + } + is_session_restored = true; + } +#endif +#ifndef QT_NO_STYLE_STYLESHEET + } else if (arg == "-stylesheet" && i < argc -1) { + styleSheet = QLatin1String("file:///"); + styleSheet.append(QString::fromLocal8Bit(argv[++i])); + } else if (arg.indexOf("-stylesheet=") != -1) { + styleSheet = QLatin1String("file:///"); + styleSheet.append(QString::fromLocal8Bit(arg.right(arg.length() - 12))); +#endif + } else if (qstrcmp(arg, "-reverse") == 0) { + force_reverse = true; + q->setLayoutDirection(Qt::RightToLeft); + } else if (qstrcmp(arg, "-widgetcount") == 0) { + widgetCount = true; + } else if (arg == "-graphicssystem" && i < argc-1) { + graphics_system_name = QString::fromLocal8Bit(argv[++i]); + } else { + argv[j++] = argv[i]; + } + if (!s.isEmpty()) { + if (app_style) { + delete app_style; + app_style = 0; + } + if (!styleOverride) + styleOverride = new QString; + *styleOverride = s; + } + } + + if(j < argc) { + argv[j] = 0; + argc = j; + } +} + +/*! + Initializes the window system and constructs an application object + with \a argc command line arguments in \a argv. + + \warning The data referred to by \a argc and \a argv must stay valid + for the entire lifetime of the QApplication object. In addition, + \a argc must be greater than zero and \a argv must contain at least + one valid character string. + + The global \c qApp pointer refers to this application object. Only + one application object should be created. + + This application object must be constructed before any \link + QPaintDevice paint devices\endlink (including widgets, pixmaps, bitmaps + etc.). + + Note that \a argc and \a argv might be changed. Qt removes command + line arguments that it recognizes. + + Qt debugging options (not available if Qt was compiled without the + QT_DEBUG flag defined): + \list + \o -nograb, tells Qt that it must never grab the mouse or the keyboard. + \o -dograb (only under X11), running under a debugger can cause + an implicit -nograb, use -dograb to override. + \o -sync (only under X11), switches to synchronous mode for + debugging. + \endlist + + See \link debug.html Debugging Techniques \endlink for a more + detailed explanation. + + All Qt programs automatically support the following command line options: + \list + \o -style= \e style, sets the application GUI style. Possible values + are \c motif, \c windows, and \c platinum. If you compiled Qt + with additional styles or have additional styles as plugins these + will be available to the \c -style command line option. + \o -style \e style, is the same as listed above. + \o -stylesheet= \e stylesheet, sets the application \l styleSheet. The value + must be a path to a file that contains the Style Sheet. Note that relative URLs + in the Style Sheet file are relative to the Style Sheet file's path. + \o -stylesheet \e stylesheet, is the same as listed above. + \o -session= \e session, restores the application from an earlier + \link session.html session \endlink. + \o -session \e session, is the same as listed above. + \o -widgetcount, prints debug message at the end about number of widgets left + undestroyed and maximum number of widgets existed at the same time + \o -reverse, sets the application's layout direction to Qt::RightToLeft + \o -graphicssystem, sets the backend to be used for on-screen + widgets and QPixmaps. Available options are \c{raster} and \c{opengl}. + + \endlist + + The Windows version of Qt also support one additional command line + option, if Direct3D support has been compiled into Qt: + \list + \o -direct3d will make the Direct3D paint engine the default widget + paint engine in Qt. \bold {This functionality is experimental.} + \endlist + + The X11 version of Qt also supports some traditional X11 + command line options: + \list + \o -display \e display, sets the X display (default is $DISPLAY). + \o -geometry \e geometry, sets the client geometry of the + first window that is shown. + \o -fn or \c -font \e font, defines the application font. The + font should be specified using an X logical font description. + \o -bg or \c -background \e color, sets the default background color + and an application palette (light and dark shades are calculated). + \o -fg or \c -foreground \e color, sets the default foreground color. + \o -btn or \c -button \e color, sets the default button color. + \o -name \e name, sets the application name. + \o -title \e title, sets the application title. + \o -visual \c TrueColor, forces the application to use a TrueColor visual + on an 8-bit display. + \o -ncols \e count, limits the number of colors allocated in the + color cube on an 8-bit display, if the application is using the + QApplication::ManyColor color specification. If \e count is + 216 then a 6x6x6 color cube is used (i.e. 6 levels of red, 6 of green, + and 6 of blue); for other values, a cube + approximately proportional to a 2x3x1 cube is used. + \o -cmap, causes the application to install a private color map + on an 8-bit display. + \o -im, sets the input method server (equivalent to setting the XMODIFIERS + environment variable) + \o -inputstyle, defines how the input is inserted into the given widget. E.g., + \c onTheSpot makes the input appear directly in the widget, while + \c overTheSpot makes the input appear in a box floating over the + widget and is not inserted until the editing is done. + \endlist + + \sa arguments() +*/ + +QApplication::QApplication(int &argc, char **argv) + : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient)) +{ Q_D(QApplication); d->construct(); } + +QApplication::QApplication(int &argc, char **argv, int _internal) + : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient)) +{ Q_D(QApplication); d->construct(); QApplicationPrivate::app_compile_version = _internal;} + + +/*! + Constructs an application object with \a argc command line arguments + in \a argv. If \a GUIenabled is true, a GUI application is + constructed, otherwise a non-GUI (console) application is created. + + \warning The data referred to by \a argc and \a argv must stay valid + for the entire lifetime of the QApplication object. In addition, + \a argc must be greater than zero and \a argv must contain at least + one valid character string. + + Set \a GUIenabled to false for programs without a graphical user + interface that should be able to run without a window system. + + On X11, the window system is initialized if \a GUIenabled is true. + If \a GUIenabled is false, the application does not connect to the + X server. On Windows and Macintosh, currently the window system is + always initialized, regardless of the value of GUIenabled. This may + change in future versions of Qt. + + The following example shows how to create an application that + uses a graphical interface when available. + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 0 +*/ + +QApplication::QApplication(int &argc, char **argv, bool GUIenabled ) + : QCoreApplication(*new QApplicationPrivate(argc, argv, GUIenabled ? GuiClient : Tty)) +{ Q_D(QApplication); d->construct(); } + +QApplication::QApplication(int &argc, char **argv, bool GUIenabled , int _internal) + : QCoreApplication(*new QApplicationPrivate(argc, argv, GUIenabled ? GuiClient : Tty)) +{ Q_D(QApplication); d->construct(); QApplicationPrivate::app_compile_version = _internal;} + + + +/*! + Constructs an application object with \a argc command line arguments + in \a argv. + + \warning The data referred to by \a argc and \a argv must stay valid + for the entire lifetime of the QApplication object. In addition, + \a argc must be greater than zero and \a argv must contain at least + one valid character string. + + With Qt for Embedded Linux, passing QApplication::GuiServer for \a type + makes this application the server (equivalent to running with the + \c -qws option). +*/ +QApplication::QApplication(int &argc, char **argv, Type type) + : QCoreApplication(*new QApplicationPrivate(argc, argv, type)) +{ Q_D(QApplication); d->construct(); } + +QApplication::QApplication(int &argc, char **argv, Type type , int _internal) + : QCoreApplication(*new QApplicationPrivate(argc, argv, type)) +{ Q_D(QApplication); d->construct(); QApplicationPrivate::app_compile_version = _internal;} + + +/*! + \internal +*/ +void QApplicationPrivate::construct( +#ifdef Q_WS_X11 + Display *dpy, Qt::HANDLE visual, Qt::HANDLE cmap +#endif + ) +{ + initResources(); + + qt_is_gui_used = (qt_appType != QApplication::Tty); + process_cmdline(); + // Must be called before initialize() + qt_init(this, qt_appType +#ifdef Q_WS_X11 + , dpy, visual, cmap +#endif + ); + initialize(); + eventDispatcher->startingUp(); + +#ifdef QT_EVAL + extern void qt_gui_eval_init(uint); + qt_gui_eval_init(application_type); +#endif +} + +#if defined(Q_WS_X11) +// ### a string literal is a cont char* +// ### using it as a char* is wrong and could lead to segfaults +// ### if aargv is modified someday +// ########## make it work with argc == argv == 0 +static int aargc = 1; +static char *aargv[] = { (char*)"unknown", 0 }; + +/*! + \fn QApplication::QApplication(Display* display, Qt::HANDLE visual, Qt::HANDLE colormap) + + Create an application, given an already open display \a display. If \a + visual and \a colormap are non-zero, the application will use those as + the default Visual and Colormap contexts. + + \warning Qt only supports TrueColor visuals at depths higher than 8 + bits-per-pixel. + + This is available only on X11. +*/ +QApplication::QApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE colormap) + : QCoreApplication(*new QApplicationPrivate(aargc, aargv, GuiClient)) +{ + if (! dpy) + qWarning("QApplication: Invalid Display* argument"); + Q_D(QApplication); + d->construct(dpy, visual, colormap); +} + +QApplication::QApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE colormap, int _internal) + : QCoreApplication(*new QApplicationPrivate(aargc, aargv, GuiClient)) +{ + if (! dpy) + qWarning("QApplication: Invalid Display* argument"); + Q_D(QApplication); + d->construct(dpy, visual, colormap); + QApplicationPrivate::app_compile_version = _internal; +} + +/*! + \fn QApplication::QApplication(Display *display, int &argc, char **argv, + Qt::HANDLE visual, Qt::HANDLE colormap) + + Create an application, given an already open \a display and using \a + argc command line arguments in \a argv. If \a visual and \a colormap + are non-zero, the application will use those as the default Visual + and Colormap contexts. + + \warning Qt only supports TrueColor visuals at depths higher than 8 + bits-per-pixel. + + This is available only on X11. + +*/ +QApplication::QApplication(Display *dpy, int &argc, char **argv, + Qt::HANDLE visual, Qt::HANDLE colormap) + : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient)) +{ + if (! dpy) + qWarning("QApplication: Invalid Display* argument"); + Q_D(QApplication); + d->construct(dpy, visual, colormap); +} + +QApplication::QApplication(Display *dpy, int &argc, char **argv, + Qt::HANDLE visual, Qt::HANDLE colormap, int _internal) + : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient)) +{ + if (! dpy) + qWarning("QApplication: Invalid Display* argument"); + Q_D(QApplication); + d->construct(dpy, visual, colormap); + QApplicationPrivate::app_compile_version = _internal; +} + +#endif // Q_WS_X11 + + +/*! + Initializes the QApplication object, called from the constructors. +*/ +extern void qInitDrawhelperAsm(); + +void QApplicationPrivate::initialize() +{ + QWidgetPrivate::mapper = new QWidgetMapper; + QWidgetPrivate::uncreatedWidgets = new QWidgetSet; + if (qt_appType != QApplication::Tty) + (void) QApplication::style(); // trigger creation of application style + // trigger registering of QVariant's GUI types + extern int qRegisterGuiVariant(); + qRegisterGuiVariant(); + + is_app_running = true; // no longer starting up + + Q_Q(QApplication); +#ifndef QT_NO_SESSIONMANAGER + // connect to the session manager + session_manager = new QSessionManager(q, session_id, session_key); +#endif + + if (qgetenv("QT_USE_NATIVE_WINDOWS").toInt() > 0) + q->setAttribute(Qt::AA_NativeWindows); + +#if defined(Q_WS_WIN) + // Alien is not currently working on Windows 98 + if (QSysInfo::WindowsVersion & QSysInfo::WV_DOS_based) + q->setAttribute(Qt::AA_NativeWindows); +#endif + +#ifdef Q_OS_WINCE +#ifdef QT_AUTO_MAXIMIZE_THRESHOLD + autoMaximizeThreshold = QT_AUTO_MAXIMIZE_THRESHOLD; +#else + if (qt_wince_is_mobile()) + autoMaximizeThreshold = 50; + else + autoMaximizeThreshold = -1; +#endif //QT_AUTO_MAXIMIZE_THRESHOLD +#endif //Q_OS_WINCE + + // Set up which span functions should be used in raster engine... + qInitDrawhelperAsm(); + +#if !defined(Q_WS_X11) && !defined(Q_WS_QWS) + // initialize the graphics system - on X11 this is initialized inside + // qt_init() in qapplication_x11.cpp because of several reasons. + // On QWS, the graphics system is set by the QScreen plugin. + graphics_system = QGraphicsSystemFactory::create(graphics_system_name); +#endif +#ifndef QT_NO_WHEELEVENT +#ifdef QT_MAC_USE_COCOA + QApplicationPrivate::wheel_scroll_lines = 1; +#else + QApplicationPrivate::wheel_scroll_lines = 3; +#endif +#endif +} + +/*! + Returns the type of application (\l Tty, GuiClient, or + GuiServer). The type is set when constructing the QApplication + object. +*/ +QApplication::Type QApplication::type() +{ + return qt_appType; +} + +/***************************************************************************** + Functions returning the active popup and modal widgets. + *****************************************************************************/ + +/*! + Returns the active popup widget. + + A popup widget is a special top-level widget that sets the \c + Qt::WType_Popup widget flag, e.g. the QMenu widget. When the + application opens a popup widget, all events are sent to the popup. + Normal widgets and modal widgets cannot be accessed before the popup + widget is closed. + + Only other popup widgets may be opened when a popup widget is shown. + The popup widgets are organized in a stack. This function returns + the active popup widget at the top of the stack. + + \sa activeModalWidget(), topLevelWidgets() +*/ + +QWidget *QApplication::activePopupWidget() +{ + return QApplicationPrivate::popupWidgets && !QApplicationPrivate::popupWidgets->isEmpty() ? + QApplicationPrivate::popupWidgets->last() : 0; +} + + +/*! + Returns the active modal widget. + + A modal widget is a special top-level widget which is a subclass of + QDialog that specifies the modal parameter of the constructor as + true. A modal widget must be closed before the user can continue + with other parts of the program. + + Modal widgets are organized in a stack. This function returns + the active modal widget at the top of the stack. + + \sa activePopupWidget(), topLevelWidgets() +*/ + +QWidget *QApplication::activeModalWidget() +{ + return qt_modal_stack && !qt_modal_stack->isEmpty() ? qt_modal_stack->first() : 0; +} + +/*! + Cleans up any window system resources that were allocated by this + application. Sets the global variable \c qApp to 0. +*/ + +QApplication::~QApplication() +{ + Q_D(QApplication); + +#ifndef QT_NO_CLIPBOARD + // flush clipboard contents + if (qt_clipboard) { + QEvent event(QEvent::Clipboard); + QApplication::sendEvent(qt_clipboard, &event); + } +#endif + + //### this should probable be done even later + qt_call_post_routines(); + + // kill timers before closing down the dispatcher + d->toolTipWakeUp.stop(); + d->toolTipFallAsleep.stop(); + + d->eventDispatcher->closingDown(); + d->eventDispatcher = 0; + + delete qt_desktopWidget; + qt_desktopWidget = 0; + QApplicationPrivate::is_app_closing = true; + QApplicationPrivate::is_app_running = false; + +#ifndef QT_NO_CLIPBOARD + delete qt_clipboard; + qt_clipboard = 0; +#endif + + // delete widget mapper + if (QWidgetPrivate::mapper) { + QWidgetMapper * myMapper = QWidgetPrivate::mapper; + QWidgetPrivate::mapper = 0; + for (QWidgetMapper::Iterator it = myMapper->begin(); it != myMapper->end(); ++it) { + register QWidget *w = *it; + if (!w->parent()) // window + w->destroy(true, true); + } + delete myMapper; + } + + // delete uncreated widgets + if (QWidgetPrivate::uncreatedWidgets) { + QWidgetSet *mySet = QWidgetPrivate::uncreatedWidgets; + QWidgetPrivate::uncreatedWidgets = 0; + for (QWidgetSet::Iterator it = mySet->begin(); it != mySet->end(); ++it) { + register QWidget *w = *it; + if (!w->parent()) // window + w->destroy(true, true); + } + delete mySet; + } + + delete QApplicationPrivate::app_pal; + QApplicationPrivate::app_pal = 0; + delete QApplicationPrivate::sys_pal; + QApplicationPrivate::sys_pal = 0; + delete QApplicationPrivate::set_pal; + QApplicationPrivate::set_pal = 0; + app_palettes()->clear(); + + { + QMutexLocker locker(applicationFontMutex()); + delete QApplicationPrivate::app_font; + QApplicationPrivate::app_font = 0; + } + delete QApplicationPrivate::sys_font; + QApplicationPrivate::sys_font = 0; + delete QApplicationPrivate::set_font; + QApplicationPrivate::set_font = 0; + app_fonts()->clear(); + + delete QApplicationPrivate::app_style; + QApplicationPrivate::app_style = 0; + delete QApplicationPrivate::app_icon; + QApplicationPrivate::app_icon = 0; +#ifndef QT_NO_CURSOR + d->cursor_list.clear(); +#endif + +#ifndef QT_NO_DRAGANDDROP + if (qt_is_gui_used) + delete QDragManager::self(); +#endif + + qt_cleanup(); + + if (QApplicationPrivate::widgetCount) + qDebug("Widgets left: %i Max widgets: %i \n", QWidgetPrivate::instanceCounter, QWidgetPrivate::maxInstances); +#ifndef QT_NO_SESSIONMANAGER + delete d->session_manager; + d->session_manager = 0; +#endif //QT_NO_SESSIONMANAGER + + QApplicationPrivate::obey_desktop_settings = true; + QApplicationPrivate::cursor_flash_time = 1000; + QApplicationPrivate::mouse_double_click_time = 400; + QApplicationPrivate::keyboard_input_time = 400; + + drag_time = 500; + drag_distance = 4; + layout_direction = Qt::LeftToRight; + QApplicationPrivate::app_strut = QSize(0, 0); + QApplicationPrivate::animate_ui = true; + QApplicationPrivate::animate_menu = false; + QApplicationPrivate::fade_menu = false; + QApplicationPrivate::animate_combo = false; + QApplicationPrivate::animate_tooltip = false; + QApplicationPrivate::fade_tooltip = false; + QApplicationPrivate::widgetCount = false; + + // trigger unregistering of QVariant's GUI types + extern int qUnregisterGuiVariant(); + qUnregisterGuiVariant(); +} + + +/*! + \fn QWidget *QApplication::widgetAt(const QPoint &point) + + Returns the widget at global screen position \a point, or 0 if there + is no Qt widget there. + + This function can be slow. + + \sa QCursor::pos(), QWidget::grabMouse(), QWidget::grabKeyboard() +*/ +QWidget *QApplication::widgetAt(const QPoint &p) +{ + QWidget *window = QApplication::topLevelAt(p); + if (!window) + return 0; + + QWidget *child = 0; + + if (!window->testAttribute(Qt::WA_TransparentForMouseEvents)) + child = window->childAt(window->mapFromGlobal(p)); + + if (child) + return child; + + if (window->testAttribute(Qt::WA_TransparentForMouseEvents)) { + //shoot a hole in the widget and try once again, + //suboptimal on Qt for Embedded Linux where we do + //know the stacking order of the toplevels. + int x = p.x(); + int y = p.y(); + QRegion oldmask = window->mask(); + QPoint wpoint = window->mapFromGlobal(QPoint(x, y)); + QRegion newmask = (oldmask.isEmpty() ? QRegion(window->rect()) : oldmask) + - QRegion(wpoint.x(), wpoint.y(), 1, 1); + window->setMask(newmask); + QWidget *recurse = 0; + if (QApplication::topLevelAt(p) != window) // verify recursion will terminate + recurse = widgetAt(x, y); + if (oldmask.isEmpty()) + window->clearMask(); + else + window->setMask(oldmask); + return recurse; + } + return window; +} + +/*! + \fn QWidget *QApplication::widgetAt(int x, int y) + + \overload + + Returns the widget at global screen position (\a x, \a y), or 0 + if there is no Qt widget there. +*/ + +/*! + \fn void QApplication::setArgs(int argc, char **argv) + \internal +*/ + + + +/*! + \internal +*/ +bool QApplication::compressEvent(QEvent *event, QObject *receiver, QPostEventList *postedEvents) +{ + if ((event->type() == QEvent::UpdateRequest +#ifdef QT3_SUPPORT + || event->type() == QEvent::LayoutHint +#endif + || event->type() == QEvent::LayoutRequest + || event->type() == QEvent::Resize + || event->type() == QEvent::Move + || event->type() == QEvent::LanguageChange + || event->type() == QEvent::InputMethod)) { + for (int i = 0; i < postedEvents->size(); ++i) { + const QPostEvent &cur = postedEvents->at(i); + if (cur.receiver != receiver || cur.event == 0 || cur.event->type() != event->type()) + continue; + if (cur.event->type() == QEvent::LayoutRequest +#ifdef QT3_SUPPORT + || cur.event->type() == QEvent::LayoutHint +#endif + || cur.event->type() == QEvent::UpdateRequest) { + ; + } else if (cur.event->type() == QEvent::Resize) { + ((QResizeEvent *)(cur.event))->s = ((QResizeEvent *)event)->s; + } else if (cur.event->type() == QEvent::Move) { + ((QMoveEvent *)(cur.event))->p = ((QMoveEvent *)event)->p; + } else if (cur.event->type() == QEvent::LanguageChange) { + ; + } else if ( cur.event->type() == QEvent::InputMethod ) { + *(QInputMethodEvent *)(cur.event) = *(QInputMethodEvent *)event; + } else { + continue; + } + delete event; + return true; + } + return false; + } + return QCoreApplication::compressEvent(event, receiver, postedEvents); +} + +/*! + \property QApplication::styleSheet + \brief the application style sheet + \since 4.2 + + By default, this property returns an empty string unless the user specifies + the \c{-stylesheet} option on the command line when running the application. + + \sa QWidget::setStyle(), {Qt Style Sheets} +*/ + +/*! + \property QApplication::autoMaximizeThreshold + \since 4.4 + \brief defines a threshold for auto maximizing widgets + + The auto maximize threshold is only available + as part of Qt for Windows CE. + + This property defines a threshold for the size of a window as a percentage + of the screen size. If the minimum size hint of a window exceeds the threshold, + calling show() will then cause the window to be maximized automatically. + + Setting the threshold to be 100 or greater means that it will cause it to always + be maximized. Setting it to be 50 means that the widget is maximized if the vertical + minimum size hint is at least 50% of the vertical screen size. + + If -1 is specified then this will disable the feature. + + On Windows CE the default is -1 (i.e. it is disabled). + On Windows Mobile the default is 40. +*/ + +/*! + \property QApplication::autoSipEnabled + \since 4.5 + \brief toggles automatic SIP (software input panel) visibility + + The auto SIP property is only available + as part of Qt for Windows CE. + + Set this property to true to automatically display the SIP when entering + widgets that accept keyboard input. This only affects widgets that have the + attribute WA_InputMethodEnabled set. +*/ + +#ifdef Q_OS_WINCE +void QApplication::setAutoMaximizeThreshold(const int threshold) +{ + QApplicationPrivate::autoMaximizeThreshold = threshold; +} + +int QApplication::autoMaximizeThreshold() const +{ + return QApplicationPrivate::autoMaximizeThreshold; +} + +void QApplication::setAutoSipEnabled(const bool enabled) +{ + QApplicationPrivate::autoSipEnabled = enabled; +} + +bool QApplication::autoSipEnabled() const +{ + return QApplicationPrivate::autoSipEnabled; +} +#endif + +#ifndef QT_NO_STYLE_STYLESHEET + +QString QApplication::styleSheet() const +{ + return QApplicationPrivate::styleSheet; +} + +void QApplication::setStyleSheet(const QString& styleSheet) +{ + QApplicationPrivate::styleSheet = styleSheet; + QStyleSheetStyle *proxy = qobject_cast<QStyleSheetStyle*>(QApplicationPrivate::app_style); + if (styleSheet.isEmpty()) { // application style sheet removed + if (!proxy) + return; // there was no stylesheet before + setStyle(proxy->base); + } else if (proxy) { // style sheet update, just repolish + proxy->repolish(qApp); + } else { // stylesheet set the first time + QStyleSheetStyle *newProxy = new QStyleSheetStyle(QApplicationPrivate::app_style); + QApplicationPrivate::app_style->setParent(newProxy); + setStyle(newProxy); + } +} + +#endif // QT_NO_STYLE_STYLESHEET + +/*! + Returns the application's style object. + + \sa setStyle(), QStyle +*/ +QStyle *QApplication::style() +{ + if (QApplicationPrivate::app_style) + return QApplicationPrivate::app_style; + if (!qt_is_gui_used) { + Q_ASSERT(!"No style available in non-gui applications!"); + return 0; + } + +#if defined(Q_WS_X11) + if(!QApplicationPrivate::styleOverride) + QApplicationPrivate::x11_initialize_style(); // run-time search for default style +#endif + if (!QApplicationPrivate::app_style) { + // Compile-time search for default style + // + QString style; + if (QApplicationPrivate::styleOverride) { + style = *QApplicationPrivate::styleOverride; + delete QApplicationPrivate::styleOverride; + QApplicationPrivate::styleOverride = 0; + } else { +#if defined(Q_WS_WIN) && defined(Q_OS_WINCE) + if (qt_wince_is_smartphone() || qt_wince_is_pocket_pc()) + style = QLatin1String("WindowsMobile"); + else + style = QLatin1String("WindowsCE"); + +#elif defined(Q_WS_WIN) + if ((QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA + && QSysInfo::WindowsVersion < QSysInfo::WV_NT_based)) + style = QLatin1String("WindowsVista"); + else if ((QSysInfo::WindowsVersion >= QSysInfo::WV_XP + && QSysInfo::WindowsVersion < QSysInfo::WV_NT_based)) + style = QLatin1String("WindowsXP"); + else + style = QLatin1String("Windows"); // default styles for Windows +#elif defined(Q_WS_X11) && defined(Q_OS_SOLARIS) + style = QLatin1String("CDE"); // default style for X11 on Solaris +#elif defined(Q_WS_X11) && defined(Q_OS_IRIX) + style = QLatin1String("SGI"); // default style for X11 on IRIX +#elif defined(Q_WS_X11) || defined(Q_WS_QWS) + style = QLatin1String("Plastique"); // default style for X11 and small devices +#elif defined(Q_WS_MAC) + style = QLatin1String("Macintosh"); // default style for all Mac's +#endif + } + + QStyle *&app_style = QApplicationPrivate::app_style; + app_style = QStyleFactory::create(style); + if (!app_style) { + QStringList styles = QStyleFactory::keys(); + for (int i = 0; i < styles.size(); ++i) { + if ((app_style = QStyleFactory::create(styles.at(i)))) + break; + } + } + if (!app_style) { + Q_ASSERT(!"No styles available!"); + return 0; + } + } + // take ownership of the style + QApplicationPrivate::app_style->setParent(qApp); + + if (!QApplicationPrivate::sys_pal) + QApplicationPrivate::setSystemPalette(QApplicationPrivate::app_style->standardPalette()); + if (QApplicationPrivate::set_pal) // repolish set palette with the new style + QApplication::setPalette(*QApplicationPrivate::set_pal); + +#ifndef QT_NO_STYLE_STYLESHEET + if (!QApplicationPrivate::styleSheet.isEmpty()) { + qApp->setStyleSheet(QApplicationPrivate::styleSheet); + } else +#endif + QApplicationPrivate::app_style->polish(qApp); + + return QApplicationPrivate::app_style; +} + +/*! + Sets the application's GUI style to \a style. Ownership of the style + object is transferred to QApplication, so QApplication will delete + the style object on application exit or when a new style is set and + the old style is still the parent of the application object. + + Example usage: + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 1 + + When switching application styles, the color palette is set back to + the initial colors or the system defaults. This is necessary since + certain styles have to adapt the color palette to be fully + style-guide compliant. + + Note that setting the style before a palette has been set + (i.e. before creating QApplication) will cause the application to + use QStyle::standardPalette() for the palette. + + \warning Qt style sheets are currently not supported for custom QStyle + subclasses. We plan to address this in some future release. + + \sa style(), QStyle, setPalette(), desktopSettingsAware() +*/ +void QApplication::setStyle(QStyle *style) +{ + if (!style || style == QApplicationPrivate::app_style) + return; + + QWidgetList all = allWidgets(); + + // clean up the old style + if (QApplicationPrivate::app_style) { + if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { + for (QWidgetList::ConstIterator it = all.constBegin(); it != all.constEnd(); ++it) { + register QWidget *w = *it; + if (!(w->windowType() == Qt::Desktop) && // except desktop + w->testAttribute(Qt::WA_WState_Polished)) { // has been polished + QApplicationPrivate::app_style->unpolish(w); + } + } + } + QApplicationPrivate::app_style->unpolish(qApp); + } + + QStyle *old = QApplicationPrivate::app_style; // save + +#ifndef QT_NO_STYLE_STYLESHEET + if (!QApplicationPrivate::styleSheet.isEmpty() && !qobject_cast<QStyleSheetStyle *>(style)) { + // we have a stylesheet already and a new style is being set + QStyleSheetStyle *newProxy = new QStyleSheetStyle(style); + style->setParent(newProxy); + QApplicationPrivate::app_style = newProxy; + } else +#endif // QT_NO_STYLE_STYLESHEET + QApplicationPrivate::app_style = style; + + QApplicationPrivate::app_style->setParent(qApp); // take ownership + + // take care of possible palette requirements of certain gui + // styles. Do it before polishing the application since the style + // might call QApplication::setPalette() itself + if (QApplicationPrivate::set_pal) { + QApplication::setPalette(*QApplicationPrivate::set_pal); + } else if (QApplicationPrivate::sys_pal) { + QApplicationPrivate::initializeWidgetPaletteHash(); + QApplicationPrivate::setPalette_helper(*QApplicationPrivate::sys_pal, /*className=*/0, /*clearWidgetPaletteHash=*/false); + } else if (!QApplicationPrivate::sys_pal) { + // Initialize the sys_pal if it hasn't happened yet... + QApplicationPrivate::setSystemPalette(QApplicationPrivate::app_style->standardPalette()); + } + + // initialize the application with the new style + QApplicationPrivate::app_style->polish(qApp); + + // re-polish existing widgets if necessary + if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { + for (QWidgetList::ConstIterator it1 = all.constBegin(); it1 != all.constEnd(); ++it1) { + register QWidget *w = *it1; + if (w->windowType() != Qt::Desktop && w->testAttribute(Qt::WA_WState_Polished)) { + if (w->style() == QApplicationPrivate::app_style) + QApplicationPrivate::app_style->polish(w); // repolish +#ifndef QT_NO_STYLE_STYLESHEET + else + w->setStyleSheet(w->styleSheet()); // touch +#endif + } + } + + for (QWidgetList::ConstIterator it2 = all.constBegin(); it2 != all.constEnd(); ++it2) { + register QWidget *w = *it2; + if (w->windowType() != Qt::Desktop && !w->testAttribute(Qt::WA_SetStyle)) { + QEvent e(QEvent::StyleChange); + QApplication::sendEvent(w, &e); +#ifdef QT3_SUPPORT + if (old) + w->styleChange(*old); +#endif + w->update(); + } + } + } + +#ifndef QT_NO_STYLE_STYLESHEET + if (QStyleSheetStyle *oldProxy = qobject_cast<QStyleSheetStyle *>(old)) { + oldProxy->deref(); + } else +#endif + if (old && old->parent() == qApp) { + delete old; + } + + if (QApplicationPrivate::focus_widget) { + QFocusEvent in(QEvent::FocusIn, Qt::OtherFocusReason); + QApplication::sendEvent(QApplicationPrivate::focus_widget->style(), &in); + QApplicationPrivate::focus_widget->update(); + } +} + +/*! + \overload + + Requests a QStyle object for \a style from the QStyleFactory. + + The string must be one of the QStyleFactory::keys(), typically one + of "windows", "motif", "cde", "plastique", "windowsxp", or + "macintosh". Style names are case insensitive. + + Returns 0 if an unknown \a style is passed, otherwise the QStyle object + returned is set as the application's GUI style. + + \warning To ensure that the application's style is set correctly, it is + best to call this function before the QApplication constructor, if + possible. +*/ +QStyle* QApplication::setStyle(const QString& style) +{ + QStyle *s = QStyleFactory::create(style); + if (!s) + return 0; + + setStyle(s); + return s; +} + +/*! + \since 4.5 + + Sets the default graphics backend to \a system, which will be used + for on-screen widgets and QPixmaps. The available systems are + \c{"native"}, \c{"raster"} and \c{"opengl"}. + + Note that this function call overrides both the application + commandline \c{-graphicssystem} switch and the configure + \c{-graphicssystem} switch. + + \warning This function must be called before the QApplication + constructor is called. + + The \c{"opengl"} option is currently considered experimental. +*/ + +void QApplication::setGraphicsSystem(const QString &system) +{ + QApplicationPrivate::graphics_system_name = system; +} + +/*! + Returns the color specification. + \sa QApplication::setColorSpec() + */ + +int QApplication::colorSpec() +{ + return QApplicationPrivate::app_cspec; +} + +/*! + Sets the color specification for the application to \a spec. + + The color specification controls how the application allocates colors + when run on a display with a limited amount of colors, e.g. 8 bit / 256 + color displays. + + The color specification must be set before you create the QApplication + object. + + The options are: + \list + \o QApplication::NormalColor. + This is the default color allocation strategy. Use this option if + your application uses buttons, menus, texts and pixmaps with few + colors. With this option, the application uses system global + colors. This works fine for most applications under X11, but on + Windows machines it may cause dithering of non-standard colors. + \o QApplication::CustomColor. + Use this option if your application needs a small number of custom + colors. On X11, this option is the same as NormalColor. On Windows, Qt + creates a Windows palette, and allocates colors to it on demand. + \o QApplication::ManyColor. + Use this option if your application is very color hungry + (e.g. it requires thousands of colors). + Under X11 the effect is: + \list + \o For 256-color displays which have at best a 256 color true + color visual, the default visual is used, and colors are + allocated from a color cube. The color cube is the 6x6x6 (216 + color) "Web palette" (the red, green, and blue components + always have one of the following values: 0x00, 0x33, 0x66, + 0x99, 0xCC, or 0xFF), but the number of colors can be changed + by the \e -ncols option. The user can force the application to + use the true color visual with the \link + QApplication::QApplication() -visual \endlink option. + \o For 256-color displays which have a true color visual with more + than 256 colors, use that visual. Silicon Graphics X servers + have this feature, for example. They provide an 8 bit visual + by default but can deliver true color when asked. + \endlist + On Windows, Qt creates a Windows palette, and fills it with a color cube. + \endlist + + Be aware that the CustomColor and ManyColor choices may lead to colormap + flashing: The foreground application gets (most) of the available + colors, while the background windows will look less attractive. + + Example: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 2 + + \sa colorSpec() +*/ + +void QApplication::setColorSpec(int spec) +{ + if (qApp) + qWarning("QApplication::setColorSpec: This function must be " + "called before the QApplication object is created"); + QApplicationPrivate::app_cspec = spec; +} + +/*! + \property QApplication::globalStrut + \brief the minimum size that any GUI element that the user can interact + with should have + + For example, no button should be resized to be smaller than the + global strut size. The strut size should be considered when + reimplementing GUI controls that may be used on touch-screens or + similar I/O devices. + + Example: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 3 + + By default, this property contains a QSize object with zero width and height. +*/ +QSize QApplication::globalStrut() +{ + return QApplicationPrivate::app_strut; +} + +void QApplication::setGlobalStrut(const QSize& strut) +{ + QApplicationPrivate::app_strut = strut; +} + +/*! + Returns the application palette. + + \sa setPalette(), QWidget::palette() +*/ +QPalette QApplication::palette() +{ + if (!QApplicationPrivate::app_pal) + QApplicationPrivate::app_pal = new QPalette(Qt::black); + return *QApplicationPrivate::app_pal; +} + +/*! + \fn QPalette QApplication::palette(const QWidget* widget) + \overload + + If a \a widget is passed, the default palette for the + widget's class is returned. This may or may not be the application + palette. In most cases there isn't a special palette for certain + types of widgets, but one notable exception is the popup menu + under Windows, if the user has defined a special background color + for menus in the display settings. + + \sa setPalette(), QWidget::palette() +*/ +QPalette QApplication::palette(const QWidget* w) +{ + PaletteHash *hash = app_palettes(); + if (w && hash && hash->size()) { + QHash<QByteArray, QPalette>::ConstIterator it = hash->constFind(w->metaObject()->className()); + if (it != hash->constEnd()) + return *it; + for (it = hash->constBegin(); it != hash->constEnd(); ++it) { + if (w->inherits(it.key())) + return it.value(); + } + } + return palette(); +} + +/*! + \overload + + Returns the palette for widgets of the given \a className. + + \sa setPalette(), QWidget::palette() +*/ +QPalette QApplication::palette(const char *className) +{ + if (!QApplicationPrivate::app_pal) + palette(); + PaletteHash *hash = app_palettes(); + if (className && hash && hash->size()) { + QHash<QByteArray, QPalette>::ConstIterator it = hash->constFind(className); + if (it != hash->constEnd()) + return *it; + } + return *QApplicationPrivate::app_pal; +} + +void QApplicationPrivate::setPalette_helper(const QPalette &palette, const char* className, bool clearWidgetPaletteHash) +{ + QPalette pal = palette; + + if (QApplicationPrivate::app_style) + QApplicationPrivate::app_style->polish(pal); // NB: non-const reference + + bool all = false; + PaletteHash *hash = app_palettes(); + if (!className) { + if (QApplicationPrivate::app_pal && pal.isCopyOf(*QApplicationPrivate::app_pal)) + return; + if (!QApplicationPrivate::app_pal) + QApplicationPrivate::app_pal = new QPalette(pal); + else + *QApplicationPrivate::app_pal = pal; + if (hash && hash->size()) { + all = true; + if (clearWidgetPaletteHash) + hash->clear(); + } + } else if (hash) { + hash->insert(className, pal); + } + + if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { + // Send ApplicationPaletteChange to qApp itself, and to the widgets. + QEvent e(QEvent::ApplicationPaletteChange); + QApplication::sendEvent(QApplication::instance(), &e); + + QWidgetList wids = QApplication::allWidgets(); + for (QWidgetList::ConstIterator it = wids.constBegin(); it != wids.constEnd(); ++it) { + register QWidget *w = *it; + if (all || (!className && w->isWindow()) || w->inherits(className)) // matching class + QApplication::sendEvent(w, &e); + } + + // Send to all scenes as well. +#ifndef QT_NO_GRAPHICSVIEW + QList<QGraphicsScene *> &scenes = qApp->d_func()->scene_list; + for (QList<QGraphicsScene *>::ConstIterator it = scenes.constBegin(); + it != scenes.constEnd(); ++it) { + QApplication::sendEvent(*it, &e); + } +#endif //QT_NO_GRAPHICSVIEW + } + if (!className && (!QApplicationPrivate::sys_pal || !palette.isCopyOf(*QApplicationPrivate::sys_pal))) { + if (!QApplicationPrivate::set_pal) + QApplicationPrivate::set_pal = new QPalette(palette); + else + *QApplicationPrivate::set_pal = palette; + } +} + +/*! + Changes the default application palette to \a palette. + + If \a className is passed, the change applies only to widgets that + inherit \a className (as reported by QObject::inherits()). If + \a className is left 0, the change affects all widgets, thus overriding + any previously set class specific palettes. + + The palette may be changed according to the current GUI style in + QStyle::polish(). + + \warning Do not use this function in conjunction with \l{Qt Style Sheets}. + When using style sheets, the palette of a widget can be customized using the "color", + "background-color", "selection-color", "selection-background-color" and + "alternate-background-color". + + Note that some styles do not use the palette for all drawing, + for instance, if they make use of native theme engines. This is + the case for the Windows XP, Windows Vista, and Mac OS X styles. + + \sa QWidget::setPalette(), palette(), QStyle::polish() +*/ + +void QApplication::setPalette(const QPalette &palette, const char* className) +{ + QApplicationPrivate::setPalette_helper(palette, className, /*clearWidgetPaletteHash=*/ true); +} + + + +void QApplicationPrivate::setSystemPalette(const QPalette &pal) +{ + QPalette adjusted; + +#if 0 + // adjust the system palette to avoid dithering + QColormap cmap = QColormap::instance(); + if (cmap.depths() > 4 && cmap.depths() < 24) { + for (int g = 0; g < QPalette::NColorGroups; g++) + for (int i = 0; i < QPalette::NColorRoles; i++) { + QColor color = pal.color((QPalette::ColorGroup)g, (QPalette::ColorRole)i); + color = cmap.colorAt(cmap.pixel(color)); + adjusted.setColor((QPalette::ColorGroup)g, (QPalette::ColorRole) i, color); + } + } +#else + adjusted = pal; +#endif + + if (!sys_pal) + sys_pal = new QPalette(adjusted); + else + *sys_pal = adjusted; + + + if (!QApplicationPrivate::set_pal) + QApplication::setPalette(*sys_pal); +} + +/*! + Returns the default application font. + + \sa fontMetrics(), QWidget::font() +*/ +QFont QApplication::font() +{ + QMutexLocker locker(applicationFontMutex()); + if (!QApplicationPrivate::app_font) + QApplicationPrivate::app_font = new QFont(QLatin1String("Helvetica")); + return *QApplicationPrivate::app_font; +} + +/*! + \overload + + Returns the default font for the \a widget. + + \sa fontMetrics(), QWidget::setFont() +*/ + +QFont QApplication::font(const QWidget *widget) +{ + FontHash *hash = app_fonts(); + +#ifdef Q_WS_MAC + // short circuit for small and mini controls + if (widget->testAttribute(Qt::WA_MacSmallSize)) { + return hash->value("QSmallFont"); + } else if (widget->testAttribute(Qt::WA_MacMiniSize)) { + return hash->value("QMiniFont"); + } +#endif + if (widget && hash && hash->size()) { + QHash<QByteArray, QFont>::ConstIterator it = + hash->constFind(widget->metaObject()->className()); + if (it != hash->constEnd()) + return it.value(); + for (it = hash->constBegin(); it != hash->constEnd(); ++it) { + if (widget->inherits(it.key())) + return it.value(); + } + } + return font(); +} + +/*! + \overload + + Returns the font for widgets of the given \a className. + + \sa setFont(), QWidget::font() +*/ +QFont QApplication::font(const char *className) +{ + FontHash *hash = app_fonts(); + if (className && hash && hash->size()) { + QHash<QByteArray, QFont>::ConstIterator it = hash->constFind(className); + if (it != hash->constEnd()) + return *it; + } + return font(); +} + + +/*! + Changes the default application font to \a font. If \a className + is passed, the change applies only to classes that inherit \a + className (as reported by QObject::inherits()). + + On application start-up, the default font depends on the window + system. It can vary depending on both the window system version and + the locale. This function lets you override the default font; but + overriding may be a bad idea because, for example, some locales need + extra large fonts to support their special characters. + + \warning Do not use this function in conjunction with \l{Qt Style Sheets}. + The font of an application can be customized using the "font" style sheet + property. To set a bold font for all QPushButtons, set the application + styleSheet() as "QPushButton { font: bold }" + + \sa font(), fontMetrics(), QWidget::setFont() +*/ + +void QApplication::setFont(const QFont &font, const char *className) +{ + bool all = false; + FontHash *hash = app_fonts(); + if (!className) { + QMutexLocker locker(applicationFontMutex()); + if (!QApplicationPrivate::app_font) + QApplicationPrivate::app_font = new QFont(font); + else + *QApplicationPrivate::app_font = font; + if (hash && hash->size()) { + all = true; + hash->clear(); + } + } else if (hash) { + hash->insert(className, font); + } + if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { + // Send ApplicationFontChange to qApp itself, and to the widgets. + QEvent e(QEvent::ApplicationFontChange); + QApplication::sendEvent(QApplication::instance(), &e); + + QWidgetList wids = QApplication::allWidgets(); + for (QWidgetList::ConstIterator it = wids.constBegin(); it != wids.constEnd(); ++it) { + register QWidget *w = *it; + if (all || (!className && w->isWindow()) || w->inherits(className)) // matching class + sendEvent(w, &e); + } + +#ifndef QT_NO_GRAPHICSVIEW + // Send to all scenes as well. + QList<QGraphicsScene *> &scenes = qApp->d_func()->scene_list; + for (QList<QGraphicsScene *>::ConstIterator it = scenes.constBegin(); + it != scenes.constEnd(); ++it) { + QApplication::sendEvent(*it, &e); + } +#endif //QT_NO_GRAPHICSVIEW + } + if (!className && (!QApplicationPrivate::sys_font || !font.isCopyOf(*QApplicationPrivate::sys_font))) { + if (!QApplicationPrivate::set_font) + QApplicationPrivate::set_font = new QFont(font); + else + *QApplicationPrivate::set_font = font; + } +} + +/*! \internal +*/ +void QApplicationPrivate::setSystemFont(const QFont &font) +{ + if (!sys_font) + sys_font = new QFont(font); + else + *sys_font = font; + + if (!QApplicationPrivate::set_font) + QApplication::setFont(*sys_font); +} + +/*! + \property QApplication::windowIcon + \brief the default window icon + + \sa QWidget::setWindowIcon(), {Setting the Application Icon} +*/ +QIcon QApplication::windowIcon() +{ + return QApplicationPrivate::app_icon ? *QApplicationPrivate::app_icon : QIcon(); +} + +void QApplication::setWindowIcon(const QIcon &icon) +{ + if (!QApplicationPrivate::app_icon) + QApplicationPrivate::app_icon = new QIcon(); + *QApplicationPrivate::app_icon = icon; + if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { +#ifdef Q_WS_MAC + void qt_mac_set_app_icon(const QPixmap &); //qapplication_mac.cpp + QSize size = QApplicationPrivate::app_icon->actualSize(QSize(128, 128)); + qt_mac_set_app_icon(QApplicationPrivate::app_icon->pixmap(size)); +#endif + QEvent e(QEvent::ApplicationWindowIconChange); + QWidgetList all = QApplication::allWidgets(); + for (QWidgetList::ConstIterator it = all.constBegin(); it != all.constEnd(); ++it) { + register QWidget *w = *it; + if (w->isWindow()) + sendEvent(w, &e); + } + } +} + +/*! + Returns a list of the top-level widgets (windows) in the + application. + + Note that some of the top-level widgets may be hidden, for + example a tooltip if no tooltip is currently shown. + + Example: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 4 + + \sa allWidgets(), QWidget::isWindow(), QWidget::isHidden() +*/ +QWidgetList QApplication::topLevelWidgets() +{ + QWidgetList list; + QWidgetList all = allWidgets(); + + for (QWidgetList::ConstIterator it = all.constBegin(); it != all.constEnd(); ++it) { + QWidget *w = *it; + if (w->isWindow() && w->windowType() != Qt::Desktop) + list.append(w); + } + return list; +} + +/*! + Returns a list of all the widgets in the application. + + The list is empty (QList::isEmpty()) if there are no widgets. + + Note that some of the widgets may be hidden. + + Example: + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 5 + + \sa topLevelWidgets(), QWidget::isVisible() +*/ + +QWidgetList QApplication::allWidgets() +{ + QWidgetList list; + if (QWidgetPrivate::mapper) + list += QWidgetPrivate::mapper->values(); + if (QWidgetPrivate::uncreatedWidgets) + list += QWidgetPrivate::uncreatedWidgets->toList(); + return list; +} + +/*! + Returns the application widget that has the keyboard input focus, or + 0 if no widget in this application has the focus. + + \sa QWidget::setFocus(), QWidget::hasFocus(), activeWindow(), focusChanged() +*/ + +QWidget *QApplication::focusWidget() +{ + return QApplicationPrivate::focus_widget; +} + +void QApplicationPrivate::setFocusWidget(QWidget *focus, Qt::FocusReason reason) +{ + if (focus && focus->window() +#ifndef QT_NO_GRAPHICSVIEW + && focus->window()->graphicsProxyWidget() +#endif + ) + return; + + hidden_focus_widget = 0; + + if (focus != focus_widget) { + if (focus && focus->isHidden()) { + hidden_focus_widget = focus; + return; + } + + if (focus && (reason == Qt::BacktabFocusReason || reason == Qt::TabFocusReason) + && qt_in_tab_key_event) + focus->window()->setAttribute(Qt::WA_KeyboardFocusChange); + else if (focus && reason == Qt::ShortcutFocusReason) { + focus->window()->setAttribute(Qt::WA_KeyboardFocusChange); + } + QWidget *prev = focus_widget; + focus_widget = focus; + + if (prev && reason != Qt::PopupFocusReason && reason != Qt::MenuBarFocusReason && + prev->testAttribute(Qt::WA_InputMethodEnabled)) { + QInputContext *qic = prev->inputContext(); + if(qic) { + qic->reset(); + qic->setFocusWidget(0); + } + } + + if(focus_widget) + focus_widget->d_func()->setFocus_sys(); + + if (reason != Qt::NoFocusReason) { + + //send events + if (prev) { +#ifdef QT_KEYPAD_NAVIGATION + if (QApplication::keypadNavigationEnabled()) { + if (prev->hasEditFocus() && reason != Qt::PopupFocusReason) + prev->setEditFocus(false); + } +#endif + QFocusEvent out(QEvent::FocusOut, reason); + QPointer<QWidget> that = prev; + QApplication::sendEvent(prev, &out); + if (that) + QApplication::sendEvent(that->style(), &out); + } + if(focus && QApplicationPrivate::focus_widget == focus) { + if (focus->testAttribute(Qt::WA_InputMethodEnabled)) { + QInputContext *qic = focus->inputContext(); + if (qic && focus_widget->testAttribute(Qt::WA_WState_Created)) + qic->setFocusWidget( focus_widget ); + } + QFocusEvent in(QEvent::FocusIn, reason); + QPointer<QWidget> that = focus; + QApplication::sendEvent(focus, &in); + if (that) + QApplication::sendEvent(that->style(), &in); + } + } + emit qApp->focusChanged(prev, focus_widget); + } +} + + +/*! + Returns the application top-level window that has the keyboard input + focus, or 0 if no application window has the focus. Note that + there might be an activeWindow() even if there is no focusWidget(), + for example if no widget in that window accepts key events. + + \sa QWidget::setFocus(), QWidget::hasFocus(), focusWidget() +*/ + +QWidget *QApplication::activeWindow() +{ + return QApplicationPrivate::active_window; +} + +/*! + Returns display (screen) font metrics for the application font. + + \sa font(), setFont(), QWidget::fontMetrics(), QPainter::fontMetrics() +*/ + +QFontMetrics QApplication::fontMetrics() +{ + return desktop()->fontMetrics(); +} + + +/*! + Closes all top-level windows. + + This function is particularly useful for applications with many + top-level windows. It could, for example, be connected to a + \gui{Exit} entry in the \gui{File} menu: + + \snippet examples/mainwindows/mdi/mainwindow.cpp 0 + + The windows are closed in random order, until one window does not + accept the close event. The application quits when the last window + was successfully closed; this can be turned off by setting \l + quitOnLastWindowClosed to false. + + \sa quitOnLastWindowClosed, lastWindowClosed() QWidget::close(), QWidget::closeEvent(), lastWindowClosed(), + quit(), topLevelWidgets(), QWidget::isWindow() +*/ +void QApplication::closeAllWindows() +{ + bool did_close = true; + QWidget *w; + while((w = activeModalWidget()) && did_close) { + if(!w->isVisible()) + break; + did_close = w->close(); + } + QWidgetList list = QApplication::topLevelWidgets(); + for (int i = 0; did_close && i < list.size(); ++i) { + w = list.at(i); + if (w->isVisible() && w->windowType() != Qt::Desktop) { + did_close = w->close(); + list = QApplication::topLevelWidgets(); + i = -1; + } + } +} + +/*! + Displays a simple message box about Qt. The message includes the + version number of Qt being used by the application. + + This is useful for inclusion in the \gui Help menu of an application, + as shown in the \l{mainwindows/menus}{Menus} example. + + This function is a convenience slot for QMessageBox::aboutQt(). +*/ +void QApplication::aboutQt() +{ +#ifndef QT_NO_MESSAGEBOX + QMessageBox::aboutQt( +#ifdef Q_WS_MAC + 0 +#else + activeWindow() +#endif // Q_WS_MAC + ); +#endif // QT_NO_MESSAGEBOX +} + + +/*! + \fn void QApplication::lastWindowClosed() + + This signal is emitted from QApplication::exec() when the last + visible primary window (i.e. window with no parent) with the + Qt::WA_QuitOnClose attribute set is closed. + + By default, + + \list + + \i this attribute is set for all widgets except transient windows + such as splash screens, tool windows, and popup menus + + \i QApplication implicitly quits when this signal is emitted. + + \endlist + + This feature be turned off by setting \l quitOnLastWindowClosed to + false. + + \sa QWidget::close() +*/ + +/*! + \since 4.1 + \fn void QApplication::focusChanged(QWidget *old, QWidget *now) + + This signal is emitted when the widget that has keyboard focus + changed from \a old to \a now, i.e. because the user pressed the + tab-key, clicked into a widget or changed the active window. Note + that both \a old and \a now can be the null-pointer. + + The signal is emitted after both widget have been notified about + the change through QFocusEvent. + + \sa QWidget::setFocus() QWidget::clearFocus() Qt::FocusReason +*/ + +/*! + \since 4.5 + \fn void QApplication::fontDatabaseChanged() + + This signal is emitted when application fonts are loaded or removed. + + \sa QFontDatabase::addApplicationFont() + \sa QFontDatabase::addApplicationFontFromData() + \sa QFontDatabase::removeAllApplicationFonts() + \sa QFontDatabase::removeApplicationFont() +*/ + +#ifndef QT_NO_TRANSLATION +static bool qt_detectRTLLanguage() +{ + return force_reverse ^ + (QApplication::tr("QT_LAYOUT_DIRECTION", + "Translate this string to the string 'LTR' in left-to-right" + " languages or to 'RTL' in right-to-left languages (such as Hebrew" + " and Arabic) to get proper widget layout.") == QLatin1String("RTL")); +} +#endif + +/*!\reimp + +*/ +bool QApplication::event(QEvent *e) +{ + Q_D(QApplication); + if(e->type() == QEvent::Close) { + QCloseEvent *ce = static_cast<QCloseEvent*>(e); + ce->accept(); + closeAllWindows(); + + QWidgetList list = topLevelWidgets(); + for (int i = 0; i < list.size(); ++i) { + QWidget *w = list.at(i); + if (w->isVisible() && !(w->windowType() == Qt::Desktop) && !(w->windowType() == Qt::Popup) && + (!(w->windowType() == Qt::Dialog) || !w->parentWidget())) { + ce->ignore(); + break; + } + } + if(ce->isAccepted()) + return true; + } else if(e->type() == QEvent::LanguageChange) { +#ifndef QT_NO_TRANSLATION + setLayoutDirection(qt_detectRTLLanguage()?Qt::RightToLeft:Qt::LeftToRight); +#endif + QWidgetList list = topLevelWidgets(); + for (int i = 0; i < list.size(); ++i) { + QWidget *w = list.at(i); + if (!(w->windowType() == Qt::Desktop)) + postEvent(w, new QEvent(QEvent::LanguageChange)); + } + } else if (e->type() == QEvent::Timer) { + QTimerEvent *te = static_cast<QTimerEvent*>(e); + Q_ASSERT(te != 0); + if (te->timerId() == d->toolTipWakeUp.timerId()) { + d->toolTipWakeUp.stop(); + if (d->toolTipWidget) { + QWidget *w = d->toolTipWidget->window(); + // show tooltip if WA_AlwaysShowToolTips is set, or if + // any ancestor of d->toolTipWidget is the active + // window + bool showToolTip = w->testAttribute(Qt::WA_AlwaysShowToolTips); + while (w && !showToolTip) { + showToolTip = w->isActiveWindow(); + w = w->parentWidget(); + w = w ? w->window() : 0; + } + if (showToolTip) { + QHelpEvent e(QEvent::ToolTip, d->toolTipPos, d->toolTipGlobalPos); + QApplication::sendEvent(d->toolTipWidget, &e); + if (e.isAccepted()) + d->toolTipFallAsleep.start(2000, this); + } + } + } else if (te->timerId() == d->toolTipFallAsleep.timerId()) { + d->toolTipFallAsleep.stop(); + } +#ifdef QT_MAC_USE_COCOA + } else if (e->type() == QEvent::CocoaRequestModal) { + d->_q_runAppModalWindow(); +#endif + } + return QCoreApplication::event(e); +} +#if !defined(Q_WS_X11) + +// The doc and X implementation of this function is in qapplication_x11.cpp + +void QApplication::syncX() {} // do nothing + +#endif + +/*! + \fn Qt::WindowsVersion QApplication::winVersion() + + Use \l QSysInfo::WindowsVersion instead. +*/ + +/*! + \fn void QApplication::setActiveWindow(QWidget* active) + + Sets the active window to the \a active widget in response to a system + event. The function is called from the platform specific event + handlers. + + \warning This function does \e not set the keyboard focus to the + active widget. Call QWidget::activateWindow() instead. + + It sets the activeWindow() and focusWidget() attributes and sends + proper \l{QEvent::WindowActivate}{WindowActivate}/\l{QEvent::WindowDeactivate}{WindowDeactivate} + and \l{QEvent::FocusIn}{FocusIn}/\l{QEvent::FocusOut}{FocusOut} events + to all appropriate widgets. The window will then be painted in + active state (e.g. cursors in line edits will blink), and it will + have tool tips enabled. + + \sa activeWindow(), QWidget::activateWindow() +*/ +void QApplication::setActiveWindow(QWidget* act) +{ + QWidget* window = act?act->window():0; + + if (QApplicationPrivate::active_window == window) + return; + +#ifndef QT_NO_GRAPHICSVIEW + if (window && window->graphicsProxyWidget()) { + // Activate the proxy's view->viewport() ? + return; + } +#endif + + QWidgetList toBeActivated; + QWidgetList toBeDeactivated; + + if (QApplicationPrivate::active_window) { + if (style()->styleHint(QStyle::SH_Widget_ShareActivation, 0, QApplicationPrivate::active_window)) { + QWidgetList list = topLevelWidgets(); + for (int i = 0; i < list.size(); ++i) { + QWidget *w = list.at(i); + if (w->isVisible() && w->isActiveWindow()) + toBeDeactivated.append(w); + } + } else { + toBeDeactivated.append(QApplicationPrivate::active_window); + } + } + +#if !defined(Q_WS_MAC) + QWidget *previousActiveWindow = QApplicationPrivate::active_window; +#endif + QApplicationPrivate::active_window = window; + + if (QApplicationPrivate::active_window) { + if (style()->styleHint(QStyle::SH_Widget_ShareActivation, 0, QApplicationPrivate::active_window)) { + QWidgetList list = topLevelWidgets(); + for (int i = 0; i < list.size(); ++i) { + QWidget *w = list.at(i); + if (w->isVisible() && w->isActiveWindow()) + toBeActivated.append(w); + } + } else { + toBeActivated.append(QApplicationPrivate::active_window); + } + + } + + // first the activation/deactivation events + QEvent activationChange(QEvent::ActivationChange); + QEvent windowActivate(QEvent::WindowActivate); + QEvent windowDeactivate(QEvent::WindowDeactivate); + +#if !defined(Q_WS_MAC) + if (!previousActiveWindow) { + QEvent appActivate(QEvent::ApplicationActivate); + sendSpontaneousEvent(qApp, &appActivate); + } +#endif + + for (int i = 0; i < toBeActivated.size(); ++i) { + QWidget *w = toBeActivated.at(i); + sendSpontaneousEvent(w, &windowActivate); + sendSpontaneousEvent(w, &activationChange); + } + + for(int i = 0; i < toBeDeactivated.size(); ++i) { + QWidget *w = toBeDeactivated.at(i); + sendSpontaneousEvent(w, &windowDeactivate); + sendSpontaneousEvent(w, &activationChange); + } + +#if !defined(Q_WS_MAC) + if (!QApplicationPrivate::active_window) { + QEvent appDeactivate(QEvent::ApplicationDeactivate); + sendSpontaneousEvent(qApp, &appDeactivate); + } +#endif + + if (QApplicationPrivate::popupWidgets == 0) { // !inPopupMode() + // then focus events + if (!QApplicationPrivate::active_window && QApplicationPrivate::focus_widget) { + QApplicationPrivate::setFocusWidget(0, Qt::ActiveWindowFocusReason); + } else if (QApplicationPrivate::active_window) { + QWidget *w = QApplicationPrivate::active_window->focusWidget(); + if (w && w->isVisible() /*&& w->focusPolicy() != QWidget::NoFocus*/) + w->setFocus(Qt::ActiveWindowFocusReason); + else { + w = QApplicationPrivate::focusNextPrevChild_helper(QApplicationPrivate::active_window, true); + if (w) { + w->setFocus(Qt::ActiveWindowFocusReason); + } else { + // If the focus widget is not in the activate_window, clear the focus + w = QApplicationPrivate::focus_widget; + if (w && !QApplicationPrivate::active_window->isAncestorOf(w)) + QApplicationPrivate::setFocusWidget(0, Qt::ActiveWindowFocusReason); + } + } + } + } +} + +/*!internal + * Helper function that returns the new focus widget, but does not set the focus reason. + * Returns 0 if a new focus widget could not be found. +*/ +QWidget *QApplicationPrivate::focusNextPrevChild_helper(QWidget *toplevel, bool next) +{ + uint focus_flag = qt_tab_all_widgets ? Qt::TabFocus : Qt::StrongFocus; + + QWidget *f = toplevel->focusWidget(); + if (!f) + f = toplevel; + + QWidget *w = f; + QWidget *test = f->d_func()->focus_next; + while (test && test != f) { + if ((test->focusPolicy() & focus_flag) == focus_flag + && !(test->d_func()->extra && test->d_func()->extra->focus_proxy) + && test->isVisibleTo(toplevel) && test->isEnabled() + && !(w->windowType() == Qt::SubWindow && !w->isAncestorOf(test)) + && (toplevel->windowType() != Qt::SubWindow || toplevel->isAncestorOf(test))) { + w = test; + if (next) + break; + } + test = test->d_func()->focus_next; + } + if (w == f) { + if (qt_in_tab_key_event) { + w->window()->setAttribute(Qt::WA_KeyboardFocusChange); + w->update(); + } + return 0; + } + return w; +} + +/*! + \fn void QApplicationPrivate::dispatchEnterLeave(QWidget* enter, QWidget* leave) + \internal + + Creates the proper Enter/Leave event when widget \a enter is entered + and widget \a leave is left. + */ +#if defined(Q_WS_WIN) + extern void qt_win_set_cursor(QWidget *, bool); +#elif defined(Q_WS_X11) + extern void qt_x11_enforce_cursor(QWidget *, bool); +#endif + +void QApplicationPrivate::dispatchEnterLeave(QWidget* enter, QWidget* leave) { +#if 0 + if (leave) { + QEvent e(QEvent::Leave); + QApplication::sendEvent(leave, & e); + } + if (enter) { + QEvent e(QEvent::Enter); + QApplication::sendEvent(enter, & e); + } + return; +#endif + + QWidget* w ; + if ((!enter && !leave) || (enter == leave)) + return; +#ifdef ALIEN_DEBUG + qDebug() << "QApplicationPrivate::dispatchEnterLeave, ENTER:" << enter << "LEAVE:" << leave; +#endif + QWidgetList leaveList; + QWidgetList enterList; + + bool sameWindow = leave && enter && leave->window() == enter->window(); + if (leave && !sameWindow) { + w = leave; + do { + leaveList.append(w); + } while (!w->isWindow() && (w = w->parentWidget())); + } + if (enter && !sameWindow) { + w = enter; + do { + enterList.prepend(w); + } while (!w->isWindow() && (w = w->parentWidget())); + } + if (sameWindow) { + int enterDepth = 0; + int leaveDepth = 0; + w = enter; + while (!w->isWindow() && (w = w->parentWidget())) + enterDepth++; + w = leave; + while (!w->isWindow() && (w = w->parentWidget())) + leaveDepth++; + QWidget* wenter = enter; + QWidget* wleave = leave; + while (enterDepth > leaveDepth) { + wenter = wenter->parentWidget(); + enterDepth--; + } + while (leaveDepth > enterDepth) { + wleave = wleave->parentWidget(); + leaveDepth--; + } + while (!wenter->isWindow() && wenter != wleave) { + wenter = wenter->parentWidget(); + wleave = wleave->parentWidget(); + } + + w = leave; + while (w != wleave) { + leaveList.append(w); + w = w->parentWidget(); + } + w = enter; + while (w != wenter) { + enterList.prepend(w); + w = w->parentWidget(); + } + } + + QEvent leaveEvent(QEvent::Leave); + for (int i = 0; i < leaveList.size(); ++i) { + w = leaveList.at(i); + if (!qApp->activeModalWidget() || QApplicationPrivate::tryModalHelper(w, 0)) { +#if defined(Q_WS_WIN) || defined(Q_WS_X11) + if (leaveAfterRelease == w) + leaveAfterRelease = 0; +#endif + QApplication::sendEvent(w, &leaveEvent); + if (w->testAttribute(Qt::WA_Hover) && + (!qApp->activePopupWidget() || qApp->activePopupWidget() == w->window())) { + Q_ASSERT(instance()); + QHoverEvent he(QEvent::HoverLeave, QPoint(-1, -1), w->mapFromGlobal(QApplicationPrivate::instance()->hoverGlobalPos)); + qApp->d_func()->notify_helper(w, &he); + } + } + } + QPoint posEnter = QCursor::pos(); + QEvent enterEvent(QEvent::Enter); + for (int i = 0; i < enterList.size(); ++i) { + w = enterList.at(i); + if (!qApp->activeModalWidget() || QApplicationPrivate::tryModalHelper(w, 0)) { + QApplication::sendEvent(w, &enterEvent); + if (w->testAttribute(Qt::WA_Hover) && + (!qApp->activePopupWidget() || qApp->activePopupWidget() == w->window())) { + QHoverEvent he(QEvent::HoverEnter, w->mapFromGlobal(posEnter), QPoint(-1, -1)); + qApp->d_func()->notify_helper(w, &he); + } + } + } + +#ifndef QT_NO_CURSOR + // Update cursor for alien/graphics widgets. + + const bool enterOnAlien = (enter && (isAlien(enter) || enter->testAttribute(Qt::WA_DontShowOnScreen))); +#if defined(Q_WS_X11) + //Whenever we leave an alien widget on X11, we need to reset its nativeParentWidget()'s cursor. + // This is not required on Windows as the cursor is reset on every single mouse move. + QWidget *parentOfLeavingCursor = 0; + for (int i = 0; i < leaveList.size(); ++i) { + w = leaveList.at(i); + if (!isAlien(w)) + break; + if (w->testAttribute(Qt::WA_SetCursor)) { + parentOfLeavingCursor = w->parentWidget(); + //continue looping, we need to find the downest alien widget with a cursor. + // (downest on the screen) + } + } + //check that we will not call qt_x11_enforce_cursor twice with the same native widget + if (parentOfLeavingCursor && (!enterOnAlien + || parentOfLeavingCursor->effectiveWinId() != enter->effectiveWinId())) { +#ifndef QT_NO_GRAPHICSVIEW + if (!parentOfLeavingCursor->window()->graphicsProxyWidget()) +#endif + { + qt_x11_enforce_cursor(parentOfLeavingCursor,true); + } + } +#endif + if (enterOnAlien) { + QWidget *cursorWidget = enter; + while (!cursorWidget->isWindow() && !cursorWidget->isEnabled()) + cursorWidget = cursorWidget->parentWidget(); + + if (!cursorWidget) + return; + +#ifndef QT_NO_GRAPHICSVIEW + if (cursorWidget->window()->graphicsProxyWidget()) { + QWidgetPrivate::nearestGraphicsProxyWidget(cursorWidget)->setCursor(cursorWidget->cursor()); + } else +#endif + { +#if defined(Q_WS_WIN) + qt_win_set_cursor(cursorWidget, true); +#elif defined(Q_WS_X11) + qt_x11_enforce_cursor(cursorWidget, true); +#endif + } + } +#endif +} + +/* exported for the benefit of testing tools */ +Q_GUI_EXPORT bool qt_tryModalHelper(QWidget *widget, QWidget **rettop) +{ + return QApplicationPrivate::tryModalHelper(widget, rettop); +} + +/*! \internal + Returns true if \a widget is blocked by a modal window. + */ +bool QApplicationPrivate::isBlockedByModal(QWidget *widget) +{ + widget = widget->window(); + if (!modalState()) + return false; + if (qApp->activePopupWidget() == widget) + return false; + + for (int i = 0; i < qt_modal_stack->size(); ++i) { + QWidget *modalWidget = qt_modal_stack->at(i); + + { + // check if the active modal widget is our widget or a parent of our widget + QWidget *w = widget; + while (w) { + if (w == modalWidget) + return false; + w = w->parentWidget(); + } +#ifdef Q_WS_WIN + if ((widget->testAttribute(Qt::WA_WState_Created) || widget->data->winid) + && (modalWidget->testAttribute(Qt::WA_WState_Created) || modalWidget->data->winid) + && IsChild(modalWidget->data->winid, widget->data->winid)) + return false; +#endif + } + + Qt::WindowModality windowModality = modalWidget->windowModality(); + if (windowModality == Qt::NonModal) { + // determine the modality type if it hasn't been set on the + // modalWidget, this normally happens when waiting for a + // native dialog. use WindowModal if we are the child of a + // group leader; otherwise use ApplicationModal. + QWidget *m = modalWidget; + while (m && !m->testAttribute(Qt::WA_GroupLeader)) { + m = m->parentWidget(); + if (m) + m = m->window(); + } + windowModality = (m && m->testAttribute(Qt::WA_GroupLeader)) + ? Qt::WindowModal + : Qt::ApplicationModal; + } + + switch (windowModality) { + case Qt::ApplicationModal: + { + QWidget *groupLeaderForWidget = widget; + while (groupLeaderForWidget && !groupLeaderForWidget->testAttribute(Qt::WA_GroupLeader)) + groupLeaderForWidget = groupLeaderForWidget->parentWidget(); + + if (groupLeaderForWidget) { + // if \a widget has WA_GroupLeader, it can only be blocked by ApplicationModal children + QWidget *m = modalWidget; + while (m && m != groupLeaderForWidget && !m->testAttribute(Qt::WA_GroupLeader)) + m = m->parentWidget(); + if (m == groupLeaderForWidget) + return true; + } else if (modalWidget != widget) { + return true; + } + break; + } + case Qt::WindowModal: + { + QWidget *w = widget; + do { + QWidget *m = modalWidget; + do { + if (m == w) + return true; + m = m->parentWidget(); + if (m) + m = m->window(); + } while (m); + w = w->parentWidget(); + if (w) + w = w->window(); + } while (w); + break; + } + default: + Q_ASSERT_X(false, "QApplication", "internal error, a modal widget cannot be modeless"); + break; + } + } + return false; +} + +/*!\internal + */ +void QApplicationPrivate::enterModal(QWidget *widget) +{ + QSet<QWidget*> blocked; + QList<QWidget*> windows = qApp->topLevelWidgets(); + for (int i = 0; i < windows.count(); ++i) { + QWidget *window = windows.at(i); + if (window->windowType() != Qt::Tool && isBlockedByModal(window)) + blocked.insert(window); + } + + enterModal_sys(widget); + + windows = qApp->topLevelWidgets(); + QEvent e(QEvent::WindowBlocked); + for (int i = 0; i < windows.count(); ++i) { + QWidget *window = windows.at(i); + if (!blocked.contains(window) && window->windowType() != Qt::Tool && isBlockedByModal(window)) + QApplication::sendEvent(window, &e); + } +} + +/*!\internal + */ +void QApplicationPrivate::leaveModal(QWidget *widget) +{ + QSet<QWidget*> blocked; + QList<QWidget*> windows = qApp->topLevelWidgets(); + for (int i = 0; i < windows.count(); ++i) { + QWidget *window = windows.at(i); + if (window->windowType() != Qt::Tool && isBlockedByModal(window)) + blocked.insert(window); + } + + leaveModal_sys(widget); + + windows = qApp->topLevelWidgets(); + QEvent e(QEvent::WindowUnblocked); + for (int i = 0; i < windows.count(); ++i) { + QWidget *window = windows.at(i); + if(blocked.contains(window) && window->windowType() != Qt::Tool && !isBlockedByModal(window)) + QApplication::sendEvent(window, &e); + } +} + + + +/*!\internal + + Called from qapplication_\e{platform}.cpp, returns true + if the widget should accept the event. + */ +bool QApplicationPrivate::tryModalHelper(QWidget *widget, QWidget **rettop) +{ + QWidget *top = QApplication::activeModalWidget(); + if (rettop) + *rettop = top; + + // the active popup widget always gets the input event + if (qApp->activePopupWidget()) + return true; + +#if defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA) + top = QApplicationPrivate::tryModalHelper_sys(top); + if (rettop) + *rettop = top; +#endif + + return !isBlockedByModal(widget->window()); +} + +/* + \internal +*/ +QWidget *QApplicationPrivate::pickMouseReceiver(QWidget *candidate, const QPoint &globalPos, + QPoint &pos, QEvent::Type type, + Qt::MouseButtons buttons, QWidget *buttonDown, + QWidget *alienWidget) +{ + Q_ASSERT(candidate); + + QWidget *mouseGrabber = QWidget::mouseGrabber(); + if (((type == QEvent::MouseMove && buttons) || (type == QEvent::MouseButtonRelease)) + && !buttonDown && !mouseGrabber) { + return 0; + } + + if (alienWidget && alienWidget->internalWinId()) + alienWidget = 0; + + QWidget *receiver = candidate; + + if (!mouseGrabber) + mouseGrabber = buttonDown ? buttonDown : alienWidget; + + if (mouseGrabber && mouseGrabber != candidate) { + receiver = mouseGrabber; + pos = receiver->mapFromGlobal(globalPos); +#ifdef ALIEN_DEBUG + qDebug() << " ** receiver adjusted to:" << receiver << "pos:" << pos; +#endif + } + + return receiver; + +} + +/* + \internal +*/ +bool QApplicationPrivate::sendMouseEvent(QWidget *receiver, QMouseEvent *event, + QWidget *alienWidget, QWidget *nativeWidget, + QWidget **buttonDown, QPointer<QWidget> &lastMouseReceiver) +{ + Q_ASSERT(receiver); + Q_ASSERT(event); + Q_ASSERT(nativeWidget); + Q_ASSERT(buttonDown); + + if (alienWidget && !isAlien(alienWidget)) + alienWidget = 0; + + QPointer<QWidget> receiverGuard = receiver; + QPointer<QWidget> nativeGuard = nativeWidget; + QPointer<QWidget> alienGuard = alienWidget; + QPointer<QWidget> activePopupWidget = qApp->activePopupWidget(); + + const bool graphicsWidget = nativeWidget->testAttribute(Qt::WA_DontShowOnScreen); + + if (*buttonDown) { + if (!graphicsWidget) { + // Register the widget that shall receive a leave event + // after the last button is released. + if ((alienWidget || !receiver->internalWinId()) && !leaveAfterRelease && !QWidget::mouseGrabber()) + leaveAfterRelease = *buttonDown; + if (event->type() == QEvent::MouseButtonRelease && !event->buttons()) + *buttonDown = 0; + } + } else if (lastMouseReceiver) { + // Dispatch enter/leave if we move: + // 1) from an alien widget to another alien widget or + // from a native widget to an alien widget (first OR case) + // 2) from an alien widget to a native widget (second OR case) + if ((alienWidget && alienWidget != lastMouseReceiver) + || (isAlien(lastMouseReceiver) && !alienWidget)) { + if (activePopupWidget) { + if (!QWidget::mouseGrabber()) + dispatchEnterLeave(alienWidget ? alienWidget : nativeWidget, lastMouseReceiver); + } else { + dispatchEnterLeave(receiver, lastMouseReceiver); + } + + } + } + +#ifdef ALIEN_DEBUG + qDebug() << "QApplicationPrivate::sendMouseEvent: receiver:" << receiver + << "pos:" << event->pos() << "alien" << alienWidget << "button down" + << *buttonDown << "last" << lastMouseReceiver << "leave after release" + << leaveAfterRelease; +#endif + + // We need this quard in case someone opens a modal dialog / popup. If that's the case + // leaveAfterRelease is set to null, but we shall not update lastMouseReceiver. + const bool wasLeaveAfterRelease = leaveAfterRelease != 0; + bool result = QApplication::sendSpontaneousEvent(receiver, event); + + if (!graphicsWidget && leaveAfterRelease && event->type() == QEvent::MouseButtonRelease + && !event->buttons() && QWidget::mouseGrabber() != leaveAfterRelease) { + // Dispatch enter/leave if: + // 1) the mouse grabber is an alien widget + // 2) the button is released on an alien widget + + QWidget *enter = 0; + if (nativeGuard) + enter = alienGuard ? alienWidget : nativeWidget; + else // The receiver is typically deleted on mouse release with drag'n'drop. + enter = QApplication::widgetAt(event->globalPos()); + + dispatchEnterLeave(enter, leaveAfterRelease); + leaveAfterRelease = 0; + lastMouseReceiver = enter; + } else if (!wasLeaveAfterRelease) { + if (activePopupWidget) { + if (!QWidget::mouseGrabber()) + lastMouseReceiver = alienGuard ? alienWidget : (nativeGuard ? nativeWidget : 0); + } else { + lastMouseReceiver = receiverGuard ? receiver : QApplication::widgetAt(event->globalPos()); + } + } + + return result; +} + +#if defined(Q_WS_WIN) || defined(Q_WS_X11) +/* + This function should only be called when the widget changes visibility, i.e. + when the \a widget is shown, hidden or deleted. This function does nothing + if the widget is a top-level or native, i.e. not an alien widget. In that + case enter/leave events are genereated by the underlying windowing system. +*/ +extern QPointer<QWidget> qt_last_mouse_receiver; +extern QWidget *qt_button_down; +void QApplicationPrivate::sendSyntheticEnterLeave(QWidget *widget) +{ +#ifndef QT_NO_CURSOR + if (!widget || widget->internalWinId() || widget->isWindow()) + return; + + const bool widgetInShow = widget->isVisible() && !widget->data->in_destructor; + if (!widgetInShow && widget != qt_last_mouse_receiver) + return; // Widget was not under the cursor when it was hidden/deleted. + + if (widgetInShow && widget->parentWidget()->data->in_show) + return; // Ingore recursive show. + + QWidget *mouseGrabber = QWidget::mouseGrabber(); + if (mouseGrabber && mouseGrabber != widget) + return; // Someone else has the grab; enter/leave should not occur. + + QWidget *tlw = widget->window(); + if (tlw->data->in_destructor || tlw->data->is_closing) + return; // Closing down the business. + + if (widgetInShow && (!qt_last_mouse_receiver || qt_last_mouse_receiver->window() != tlw)) + return; // Mouse cursor not inside the widget's top-level. + + const QPoint globalPos(QCursor::pos()); + QPoint pos = tlw->mapFromGlobal(globalPos); + + // Find the current widget under the mouse. If this function was called from + // the widget's destructor, we have to make sure childAt() doesn't take into + // account widgets that are about to be destructed. + QWidget *widgetUnderCursor = tlw->d_func()->childAt_helper(pos, widget->data->in_destructor); + if (!widgetUnderCursor) + widgetUnderCursor = tlw; + else + pos = widgetUnderCursor->mapFrom(tlw, pos); + + if (widgetInShow && widgetUnderCursor != widget && !widget->isAncestorOf(widgetUnderCursor)) + return; // Mouse cursor not inside the widget or any of its children. + + if (widget->data->in_destructor && qt_button_down == widget) + qt_button_down = 0; + + // Send enter/leave events followed by a mouse move on the entered widget. + QMouseEvent e(QEvent::MouseMove, pos, globalPos, Qt::NoButton, mouse_buttons, modifier_buttons); + sendMouseEvent(widgetUnderCursor, &e, widgetUnderCursor, tlw, &qt_button_down, qt_last_mouse_receiver); +#endif // QT_NO_CURSOR +} +#endif // Q_WS_WIN || Q_WS_X11 + +/*! + Returns the desktop widget (also called the root window). + + Note that the desktop may be composed of multiple screens, so it would be + incorrect, for example, to attempt to \e center some widget in the + desktop's geometry. QDesktopWidget has various functions for obtaining + useful geometries upon the desktop, such as QDesktopWidget::screenGeometry() + and QDesktopWidget::availableGeometry(). + + On X11, it is also possible to draw on the desktop. +*/ +QDesktopWidget *QApplication::desktop() +{ + if (!qt_desktopWidget || // not created yet + !(qt_desktopWidget->windowType() == Qt::Desktop)) { // reparented away + qt_desktopWidget = new QDesktopWidget(); + } + return qt_desktopWidget; +} + +#ifndef QT_NO_CLIPBOARD +/*! + Returns a pointer to the application global clipboard. + + \note The QApplication object should already be constructed before + accessing the clipboard. +*/ +QClipboard *QApplication::clipboard() +{ + if (qt_clipboard == 0) { + if (!qApp) { + qWarning("QApplication: Must construct a QApplication before accessing a QClipboard"); + return 0; + } + qt_clipboard = new QClipboard(0); + } + return qt_clipboard; +} +#endif // QT_NO_CLIPBOARD + +/*! + Sets whether Qt should use the system's standard colors, fonts, + etc., to \a on. By default, this is true. + + This function must be called before creating the QApplication + object, like this: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 6 + + \sa desktopSettingsAware() +*/ +void QApplication::setDesktopSettingsAware(bool on) +{ + QApplicationPrivate::obey_desktop_settings = on; +} + +/*! + Returns true if Qt is set to use the system's standard colors, + fonts, etc.; otherwise returns false. The default is true. + + \sa setDesktopSettingsAware() +*/ +bool QApplication::desktopSettingsAware() +{ + return QApplicationPrivate::obey_desktop_settings; +} + +/*! + Returns the current state of the modifier keys on the keyboard. The + current state is updated sychronously as the event queue is emptied + of events that will spontaneously change the keyboard state + (QEvent::KeyPress and QEvent::KeyRelease events). + + It should be noted this may not reflect the actual keys held on the + input device at the time of calling but rather the modifiers as + last reported in one of the above events. If no keys are being held + Qt::NoModifier is returned. + + \sa mouseButtons() +*/ + +Qt::KeyboardModifiers QApplication::keyboardModifiers() +{ + return QApplicationPrivate::modifier_buttons; +} + +/*! + Returns the current state of the buttons on the mouse. The current + state is updated syncronously as the event queue is emptied of + events that will spontaneously change the mouse state + (QEvent::MouseButtonPress and QEvent::MouseButtonRelease events). + + It should be noted this may not reflect the actual buttons held on + theinput device at the time of calling but rather the mouse buttons + as last reported in one of the above events. If no mouse buttons are + being held Qt::NoButton is returned. + + \sa keyboardModifiers() +*/ + +Qt::MouseButtons QApplication::mouseButtons() +{ + return QApplicationPrivate::mouse_buttons; +} + +/*! + \fn bool QApplication::isSessionRestored() const + + Returns true if the application has been restored from an earlier + \link session.html session\endlink; otherwise returns false. + + \sa sessionId(), commitData(), saveState() +*/ + + +/*! + \fn QString QApplication::sessionId() const + + Returns the current \link session.html session's\endlink identifier. + + If the application has been restored from an earlier session, this + identifier is the same as it was in that previous session. + + The session identifier is guaranteed to be unique both for different + applications and for different instances of the same application. + + \sa isSessionRestored(), sessionKey(), commitData(), saveState() + */ + +/*! + \fn QString QApplication::sessionKey() const + + Returns the session key in the current \link session.html + session\endlink. + + If the application has been restored from an earlier session, this + key is the same as it was when the previous session ended. + + The session key changes with every call of commitData() or + saveState(). + + \sa isSessionRestored(), sessionId(), commitData(), saveState() + */ +#ifndef QT_NO_SESSIONMANAGER +bool QApplication::isSessionRestored() const +{ + Q_D(const QApplication); + return d->is_session_restored; +} + +QString QApplication::sessionId() const +{ + Q_D(const QApplication); + return d->session_id; +} + +QString QApplication::sessionKey() const +{ + Q_D(const QApplication); + return d->session_key; +} +#endif + + + + + +/*! + \since 4.2 + \fn void QApplication::commitDataRequest(QSessionManager &manager) + + This signal deals with \link session.html session + management\endlink. It is emitted when the QSessionManager wants the + application to commit all its data. + + Usually this means saving all open files, after getting + permission from the user. Furthermore you may want to provide a means + by which the user can cancel the shutdown. + + Note that you should not exit the application when called. + Instead, the session manager may or may not do this afterwards, + depending on the context. + + \warning Within this signal, no user interaction is possible, \e + unless you ask the \a manager for explicit permission. See + QSessionManager::allowsInteraction() and + QSessionManager::allowsErrorInteraction() for details and example + usage. + + Note: You should use Qt::DirectConnection when connecting to this signal. + + \sa isSessionRestored(), sessionId(), saveState(), {Session Management} +*/ + +/*! + This function deals with \link session.html session + management\endlink. It is invoked when the QSessionManager wants the + application to commit all its data. + + Usually this means saving all open files, after getting + permission from the user. Furthermore you may want to provide a means + by which the user can cancel the shutdown. + + Note that you should not exit the application within this function. + Instead, the session manager may or may not do this afterwards, + depending on the context. + + \warning Within this function, no user interaction is possible, \e + unless you ask the \a manager for explicit permission. See + QSessionManager::allowsInteraction() and + QSessionManager::allowsErrorInteraction() for details and example + usage. + + The default implementation requests interaction and sends a close + event to all visible top-level widgets. If any event was + rejected, the shutdown is canceled. + + \sa isSessionRestored(), sessionId(), saveState(), {Session Management} +*/ +#ifndef QT_NO_SESSIONMANAGER +void QApplication::commitData(QSessionManager& manager ) +{ + emit commitDataRequest(manager); + if (manager.allowsInteraction()) { + QWidgetList done; + QWidgetList list = QApplication::topLevelWidgets(); + bool cancelled = false; + for (int i = 0; !cancelled && i < list.size(); ++i) { + QWidget* w = list.at(i); + if (w->isVisible() && !done.contains(w)) { + cancelled = !w->close(); + if (!cancelled) + done.append(w); + list = QApplication::topLevelWidgets(); + i = -1; + } + } + if (cancelled) + manager.cancel(); + } +} + +/*! + \since 4.2 + \fn void QApplication::saveStateRequest(QSessionManager &manager) + + This signal deals with \link session.html session + management\endlink. It is invoked when the + \link QSessionManager session manager \endlink wants the application + to preserve its state for a future session. + + For example, a text editor would create a temporary file that + includes the current contents of its edit buffers, the location of + the cursor and other aspects of the current editing session. + + Note that you should never exit the application within this + signal. Instead, the session manager may or may not do this + afterwards, depending on the context. Futhermore, most session + managers will very likely request a saved state immediately after + the application has been started. This permits the session manager + to learn about the application's restart policy. + + \warning Within this function, no user interaction is possible, \e + unless you ask the \a manager for explicit permission. See + QSessionManager::allowsInteraction() and + QSessionManager::allowsErrorInteraction() for details. + + Note:: You should use Qt::DirectConnection when connecting to this signal. + + \sa isSessionRestored(), sessionId(), commitData(), {Session Management} +*/ + +/*! + This function deals with \link session.html session + management\endlink. It is invoked when the + \link QSessionManager session manager \endlink wants the application + to preserve its state for a future session. + + For example, a text editor would create a temporary file that + includes the current contents of its edit buffers, the location of + the cursor and other aspects of the current editing session. + + Note that you should never exit the application within this + function. Instead, the session manager may or may not do this + afterwards, depending on the context. Futhermore, most session + managers will very likely request a saved state immediately after + the application has been started. This permits the session manager + to learn about the application's restart policy. + + \warning Within this function, no user interaction is possible, \e + unless you ask the \a manager for explicit permission. See + QSessionManager::allowsInteraction() and + QSessionManager::allowsErrorInteraction() for details. + + \sa isSessionRestored(), sessionId(), commitData(), {Session Management} +*/ + +void QApplication::saveState(QSessionManager &manager) +{ + emit saveStateRequest(manager); +} +#endif //QT_NO_SESSIONMANAGER +/* + Sets the time after which a drag should start to \a ms ms. + + \sa startDragTime() +*/ + +void QApplication::setStartDragTime(int ms) +{ + drag_time = ms; +} + +/*! + \property QApplication::startDragTime + \brief the time in milliseconds that a mouse button must be held down + before a drag and drop operation will begin + + If you support drag and drop in your application, and want to start a + drag and drop operation after the user has held down a mouse button for + a certain amount of time, you should use this property's value as the + delay. + + Qt also uses this delay internally, e.g. in QTextEdit and QLineEdit, + for starting a drag. + + The default value is 500 ms. + + \sa startDragDistance(), {Drag and Drop} +*/ + +int QApplication::startDragTime() +{ + return drag_time; +} + +/* + Sets the distance after which a drag should start to \a l pixels. + + \sa startDragDistance() +*/ + +void QApplication::setStartDragDistance(int l) +{ + drag_distance = l; +} + +/*! + \property QApplication::startDragDistance + + If you support drag and drop in your application, and want to start a + drag and drop operation after the user has moved the cursor a certain + distance with a button held down, you should use this property's value + as the minimum distance required. + + For example, if the mouse position of the click is stored in \c + startPos and the current position (e.g. in the mouse move event) is + \c currentPos, you can find out if a drag should be started with code + like this: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 7 + + Qt uses this value internally, e.g. in QFileDialog. + + The default value is 4 pixels. + + \sa startDragTime() QPoint::manhattanLength() {Drag and Drop} +*/ + +int QApplication::startDragDistance() +{ + return drag_distance; +} + +/*! + \fn void QApplication::setReverseLayout(bool reverse) + + Use setLayoutDirection() instead. +*/ + +/*! + \fn void QApplication::reverseLayout() + + Use layoutDirection() instead. +*/ + +/*! + \fn bool QApplication::isRightToLeft() + + Returns true if the application's layout direction is + Qt::RightToLeft; otherwise returns false. + + \sa layoutDirection(), isLeftToRight() +*/ + +/*! + \fn bool QApplication::isLeftToRight() + + Returns true if the application's layout direction is + Qt::LeftToRight; otherwise returns false. + + \sa layoutDirection(), isRightToLeft() +*/ + +/*! \property QApplication::layoutDirection + + \brief the default layout direction for this application + + On system start-up, the default layout direction depends on the + application's language. + + \sa QWidget::layoutDirection, isLeftToRight(), isRightToLeft() + */ + +void QApplication::setLayoutDirection(Qt::LayoutDirection direction) +{ + if (layout_direction == direction) + return; + + layout_direction = direction; + + QWidgetList list = topLevelWidgets(); + for (int i = 0; i < list.size(); ++i) { + QWidget *w = list.at(i); + QEvent ev(QEvent::ApplicationLayoutDirectionChange); + sendEvent(w, &ev); + } +} + +Qt::LayoutDirection QApplication::layoutDirection() +{ + return layout_direction; +} + + +/*! \obsolete + + Strips out vertical alignment flags and transforms an + alignment \a align of Qt::AlignLeft into Qt::AlignLeft or + Qt::AlignRight according to the language used. +*/ + +#ifdef QT3_SUPPORT +Qt::Alignment QApplication::horizontalAlignment(Qt::Alignment align) +{ + return QStyle::visualAlignment(layoutDirection(), align); +} +#endif + + +/*! + \fn QCursor *QApplication::overrideCursor() + + Returns the active application override cursor. + + This function returns 0 if no application cursor has been defined + (i.e. the internal cursor stack is empty). + + \sa setOverrideCursor(), restoreOverrideCursor() +*/ +#ifndef QT_NO_CURSOR +QCursor *QApplication::overrideCursor() +{ + return qApp->d_func()->cursor_list.isEmpty() ? 0 : &qApp->d_func()->cursor_list.first(); +} + +/*! + Changes the currently active application override cursor to \a cursor. + + This function has no effect if setOverrideCursor() wasn't called. + + \sa setOverrideCursor() overrideCursor() restoreOverrideCursor() QWidget::setCursor() + */ +void QApplication::changeOverrideCursor(const QCursor &cursor) +{ + if (qApp->d_func()->cursor_list.isEmpty()) + return; + qApp->d_func()->cursor_list.removeFirst(); + setOverrideCursor(cursor); +} +#endif + +/*! + \fn void QApplication::setOverrideCursor(const QCursor &cursor, bool replace) + + Use changeOverrideCursor(\a cursor) (if \a replace is true) + or setOverrideCursor(\a cursor) (if \a replace is false). +*/ + +/*! + Enters the main event loop and waits until exit() is called, then returns + the value that was set to exit() (which is 0 if exit() is called via + quit()). + + It is necessary to call this function to start event handling. The + main event loop receives events from the window system and + dispatches these to the application widgets. + + Generally speaking, no user interaction can take place before + calling exec(). As a special case, modal widgets like QMessageBox + can be used before calling exec(), because modal widgets call + exec() to start a local event loop. + + To make your application perform idle processing, i.e. executing a + special function whenever there are no pending events, use a + QTimer with 0 timeout. More advanced idle processing schemes can + be achieved using processEvents(). + + We recommend that you connect clean-up code to the + \l{QCoreApplication::}{aboutToQuit()} signal, instead of putting it in + your application's \c{main()} function because on some platforms the + QApplication::exec() call may not return. For example, on Windows + when the user logs off, the system terminates the process after Qt + closes all top-level windows. Hence, there is no guarantee that the + application will have time to exit its event loop and execute code at + the end of the \c{main()} function after the QApplication::exec() + call. + + \sa quitOnLastWindowClosed, quit(), exit(), processEvents(), + QCoreApplication::exec() +*/ +int QApplication::exec() +{ +#ifndef QT_NO_ACCESSIBILITY + QAccessible::setRootObject(qApp); +#endif + return QCoreApplication::exec(); +} + +/*! \reimp + */ +bool QApplication::notify(QObject *receiver, QEvent *e) +{ + Q_D(QApplication); + // no events are delivered after ~QCoreApplication() has started + if (QApplicationPrivate::is_app_closing) + return true; + + if (receiver == 0) { // serious error + qWarning("QApplication::notify: Unexpected null receiver"); + return true; + } + +#ifndef QT_NO_DEBUG + d->checkReceiverThread(receiver); +#endif + +#ifdef QT3_SUPPORT + if (e->type() == QEvent::ChildRemoved && !receiver->d_func()->pendingChildInsertedEvents.isEmpty()) + receiver->d_func()->removePendingChildInsertedEvents(static_cast<QChildEvent *>(e)->child()); +#endif // QT3_SUPPORT + + // capture the current mouse/keyboard state + if(e->spontaneous()) { + if (e->type() == QEvent::KeyPress + || e->type() == QEvent::KeyRelease) { + QKeyEvent *ke = static_cast<QKeyEvent*>(e); + QApplicationPrivate::modifier_buttons = ke->modifiers(); + } else if(e->type() == QEvent::MouseButtonPress + || e->type() == QEvent::MouseButtonRelease) { + QMouseEvent *me = static_cast<QMouseEvent*>(e); + QApplicationPrivate::modifier_buttons = me->modifiers(); + if(me->type() == QEvent::MouseButtonPress) + QApplicationPrivate::mouse_buttons |= me->button(); + else + QApplicationPrivate::mouse_buttons &= ~me->button(); + } +#if !defined(QT_NO_WHEELEVENT) || !defined(QT_NO_TABLETEVENT) + else if ( +# ifndef QT_NO_WHEELEVENT + e->type() == QEvent::Wheel || +# endif +# ifndef QT_NO_TABLETEVENT + e->type() == QEvent::TabletMove + || e->type() == QEvent::TabletPress + || e->type() == QEvent::TabletRelease +# endif + ) { + QInputEvent *ie = static_cast<QInputEvent*>(e); + QApplicationPrivate::modifier_buttons = ie->modifiers(); + } +#endif // !QT_NO_WHEELEVENT || !QT_NO_TABLETEVENT + } + + // User input and window activation makes tooltips sleep + switch (e->type()) { + case QEvent::Wheel: + case QEvent::ActivationChange: + case QEvent::KeyPress: + case QEvent::KeyRelease: + case QEvent::FocusOut: + case QEvent::FocusIn: + case QEvent::MouseButtonPress: + case QEvent::MouseButtonRelease: + case QEvent::MouseButtonDblClick: + d->toolTipFallAsleep.stop(); + case QEvent::Leave: + d->toolTipWakeUp.stop(); + default: + break; + } + + bool res = false; + if (!receiver->isWidgetType()) { + res = d->notify_helper(receiver, e); + } else switch (e->type()) { +#if defined QT3_SUPPORT && !defined(QT_NO_SHORTCUT) + case QEvent::Accel: + { + if (d->use_compat()) { + QKeyEvent* key = static_cast<QKeyEvent*>(e); + res = d->notify_helper(receiver, e); + + if (!res && !key->isAccepted()) + res = d->qt_dispatchAccelEvent(static_cast<QWidget *>(receiver), key); + + // next lines are for compatibility with Qt <= 3.0.x: old + // QAccel was listening on toplevel widgets + if (!res && !key->isAccepted() && !static_cast<QWidget *>(receiver)->isWindow()) + res = d->notify_helper(static_cast<QWidget *>(receiver)->window(), e); + } + break; + } +#endif //QT3_SUPPORT && !QT_NO_SHORTCUT + case QEvent::ShortcutOverride: + case QEvent::KeyPress: + case QEvent::KeyRelease: + { + bool isWidget = receiver->isWidgetType(); + bool isGraphicsWidget = false; +#ifndef QT_NO_GRAPHICSVIEW + isGraphicsWidget = !isWidget && qobject_cast<QGraphicsWidget *>(receiver); +#endif + if (!isWidget && !isGraphicsWidget) { + res = d->notify_helper(receiver, e); + break; + } + + QKeyEvent* key = static_cast<QKeyEvent*>(e); +#if defined QT3_SUPPORT && !defined(QT_NO_SHORTCUT) + if (d->use_compat() && d->qt_tryComposeUnicode(static_cast<QWidget*>(receiver), key)) + break; +#endif + if (key->type()==QEvent::KeyPress) { +#ifndef QT_NO_SHORTCUT + // Try looking for a Shortcut before sending key events + if ((res = qApp->d_func()->shortcutMap.tryShortcutEvent(receiver, key))) + return res; +#endif + qt_in_tab_key_event = (key->key() == Qt::Key_Backtab + || key->key() == Qt::Key_Tab + || key->key() == Qt::Key_Left + || key->key() == Qt::Key_Up + || key->key() == Qt::Key_Right + || key->key() == Qt::Key_Down); + } + bool def = key->isAccepted(); + QPointer<QObject> pr = receiver; + while (receiver) { + if (def) + key->accept(); + else + key->ignore(); + res = d->notify_helper(receiver, e); + QWidget *w = isWidget ? static_cast<QWidget *>(receiver) : 0; +#ifndef QT_NO_GRAPHICSVIEW + QGraphicsWidget *gw = isGraphicsWidget ? static_cast<QGraphicsWidget *>(receiver) : 0; +#endif + + if ((res && key->isAccepted()) + /* + QLineEdit will emit a signal on Key_Return, but + ignore the event, and sometimes the connected + slot deletes the QLineEdit (common in itemview + delegates), so we have to check if the widget + was destroyed even if the event was ignored (to + prevent a crash) + + note that we don't have to reset pw while + propagating (because the original receiver will + be destroyed if one of its ancestors is) + */ + || !pr + || (isWidget && (w->isWindow() || !w->parentWidget())) +#ifndef QT_NO_GRAPHICSVIEW + || (isGraphicsWidget && (gw->isWindow() || !gw->parentWidget())) +#endif + ) { + break; + } + +#ifndef QT_NO_GRAPHICSVIEW + receiver = w ? (QObject *)w->parentWidget() : (QObject *)gw->parentWidget(); +#else + receiver = w->parentWidget(); +#endif + } + qt_in_tab_key_event = false; + } + break; + case QEvent::MouseButtonPress: + case QEvent::MouseButtonRelease: + case QEvent::MouseButtonDblClick: + case QEvent::MouseMove: + { + QWidget* w = static_cast<QWidget *>(receiver); + + QMouseEvent* mouse = static_cast<QMouseEvent*>(e); + QPoint relpos = mouse->pos(); + + if (e->spontaneous()) { + + if (e->type() == QEvent::MouseButtonPress) { + QWidget *fw = w; + while (fw) { + if (fw->isEnabled() + && QApplicationPrivate::shouldSetFocus(fw, Qt::ClickFocus)) { + fw->setFocus(Qt::MouseFocusReason); + break; + } + if (fw->isWindow()) + break; + fw = fw->parentWidget(); + } + } + + if (e->type() == QEvent::MouseMove && mouse->buttons() == 0) { + d->toolTipWidget = w; + d->toolTipPos = relpos; + d->toolTipGlobalPos = mouse->globalPos(); + d->toolTipWakeUp.start(d->toolTipFallAsleep.isActive()?20:700, this); + } + } + + bool eventAccepted = mouse->isAccepted(); + + QPointer<QWidget> pw = w; + while (w) { + QMouseEvent me(mouse->type(), relpos, mouse->globalPos(), mouse->button(), mouse->buttons(), + mouse->modifiers()); + me.spont = mouse->spontaneous(); + // throw away any mouse-tracking-only mouse events + if (!w->hasMouseTracking() + && mouse->type() == QEvent::MouseMove && mouse->buttons() == 0) { + // but still send them through all application event filters (normally done by notify_helper) + for (int i = 0; i < d->eventFilters.size(); ++i) { + register QObject *obj = d->eventFilters.at(i); + if (!obj) + continue; + if (obj->d_func()->threadData != w->d_func()->threadData) { + qWarning("QApplication: Object event filter cannot be in a different thread."); + continue; + } + if (obj->eventFilter(w, w == receiver ? mouse : &me)) + break; + } + res = true; + } else { + w->setAttribute(Qt::WA_NoMouseReplay, false); + res = d->notify_helper(w, w == receiver ? mouse : &me); + e->spont = false; + } + eventAccepted = (w == receiver ? mouse : &me)->isAccepted(); + if (res && eventAccepted) + break; + if (w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) + break; + relpos += w->pos(); + w = w->parentWidget(); + } + + mouse->setAccepted(eventAccepted); + + if (e->type() == QEvent::MouseMove) { + if (!pw) + break; + + w = static_cast<QWidget *>(receiver); + relpos = mouse->pos(); + QPoint diff = relpos - w->mapFromGlobal(d->hoverGlobalPos); + while (w) { + if (w->testAttribute(Qt::WA_Hover) && + (!qApp->activePopupWidget() || qApp->activePopupWidget() == w->window())) { + QHoverEvent he(QEvent::HoverMove, relpos, relpos - diff); + d->notify_helper(w, &he); + } + if (w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) + break; + relpos += w->pos(); + w = w->parentWidget(); + } + } + + d->hoverGlobalPos = mouse->globalPos(); + } + break; +#ifndef QT_NO_WHEELEVENT + case QEvent::Wheel: + { + QWidget* w = static_cast<QWidget *>(receiver); + QWheelEvent* wheel = static_cast<QWheelEvent*>(e); + QPoint relpos = wheel->pos(); + bool eventAccepted = wheel->isAccepted(); + + if (e->spontaneous()) { + QWidget *fw = w; + while (fw) { + if (fw->isEnabled() + && QApplicationPrivate::shouldSetFocus(fw, Qt::WheelFocus)) { + fw->setFocus(Qt::MouseFocusReason); + break; + } + if (fw->isWindow()) + break; + fw = fw->parentWidget(); + } + } + + while (w) { + QWheelEvent we(relpos, wheel->globalPos(), wheel->delta(), wheel->buttons(), + wheel->modifiers(), wheel->orientation()); + we.spont = wheel->spontaneous(); + res = d->notify_helper(w, w == receiver ? wheel : &we); + eventAccepted = ((w == receiver) ? wheel : &we)->isAccepted(); + e->spont = false; + if ((res && eventAccepted) + || w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) + break; + + relpos += w->pos(); + w = w->parentWidget(); + } + wheel->setAccepted(eventAccepted); + } + break; +#endif +#ifndef QT_NO_CONTEXTMENU + case QEvent::ContextMenu: + { + QWidget* w = static_cast<QWidget *>(receiver); + QContextMenuEvent *context = static_cast<QContextMenuEvent*>(e); + QPoint relpos = context->pos(); + bool eventAccepted = context->isAccepted(); + while (w) { + QContextMenuEvent ce(context->reason(), relpos, context->globalPos(), context->modifiers()); + ce.spont = e->spontaneous(); + res = d->notify_helper(w, w == receiver ? context : &ce); + eventAccepted = ((w == receiver) ? context : &ce)->isAccepted(); + e->spont = false; + + if ((res && eventAccepted) + || w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) + break; + + relpos += w->pos(); + w = w->parentWidget(); + } + context->setAccepted(eventAccepted); + } + break; +#endif // QT_NO_CONTEXTMENU +#ifndef QT_NO_TABLETEVENT + case QEvent::TabletMove: + case QEvent::TabletPress: + case QEvent::TabletRelease: + { + QWidget *w = static_cast<QWidget *>(receiver); + QTabletEvent *tablet = static_cast<QTabletEvent*>(e); + QPoint relpos = tablet->pos(); + bool eventAccepted = tablet->isAccepted(); + while (w) { + QTabletEvent te(tablet->type(), relpos, tablet->globalPos(), + tablet->hiResGlobalPos(), tablet->device(), tablet->pointerType(), + tablet->pressure(), tablet->xTilt(), tablet->yTilt(), + tablet->tangentialPressure(), tablet->rotation(), tablet->z(), + tablet->modifiers(), tablet->uniqueId()); + te.spont = e->spontaneous(); + res = d->notify_helper(w, w == receiver ? tablet : &te); + eventAccepted = ((w == receiver) ? tablet : &te)->isAccepted(); + e->spont = false; + if ((res && eventAccepted) + || w->isWindow() + || w->testAttribute(Qt::WA_NoMousePropagation)) + break; + + relpos += w->pos(); + w = w->parentWidget(); + } + tablet->setAccepted(eventAccepted); + qt_tabletChokeMouse = tablet->isAccepted(); + } + break; +#endif // QT_NO_TABLETEVENT + +#if !defined(QT_NO_TOOLTIP) || !defined(QT_NO_WHATSTHIS) + case QEvent::ToolTip: + case QEvent::WhatsThis: + case QEvent::QueryWhatsThis: + { + QWidget* w = static_cast<QWidget *>(receiver); + QHelpEvent *help = static_cast<QHelpEvent*>(e); + QPoint relpos = help->pos(); + bool eventAccepted = help->isAccepted(); + while (w) { + QHelpEvent he(help->type(), relpos, help->globalPos()); + he.spont = e->spontaneous(); + res = d->notify_helper(w, w == receiver ? help : &he); + e->spont = false; + eventAccepted = (w == receiver ? help : &he)->isAccepted(); + if ((res && eventAccepted) || w->isWindow()) + break; + + relpos += w->pos(); + w = w->parentWidget(); + } + help->setAccepted(eventAccepted); + } + break; +#endif +#if !defined(QT_NO_STATUSTIP) || !defined(QT_NO_WHATSTHIS) + case QEvent::StatusTip: + case QEvent::WhatsThisClicked: + { + QWidget *w = static_cast<QWidget *>(receiver); + while (w) { + res = d->notify_helper(w, e); + if ((res && e->isAccepted()) || w->isWindow()) + break; + w = w->parentWidget(); + } + } + break; +#endif + +#ifndef QT_NO_DRAGANDDROP + case QEvent::DragEnter: { + QWidget* w = static_cast<QWidget *>(receiver); + QDragEnterEvent *dragEvent = static_cast<QDragEnterEvent *>(e); +#ifdef Q_WS_MAC + // HIView has a slight difference in how it delivers events to children and parents + // It will not give a leave to a child's parent when it enters a child. + QWidget *currentTarget = QDragManager::self()->currentTarget(); + if (currentTarget) { + // Assume currentTarget did not get a leave + QDragLeaveEvent event; + QApplication::sendEvent(currentTarget, &event); + } +#endif +#ifndef QT_NO_GRAPHICSVIEW + // QGraphicsProxyWidget handles its own propagation, + // and we must not change QDragManagers currentTarget. + QWExtra *extra = w->window()->d_func()->extra; + if (extra && extra->proxyWidget) { + res = d->notify_helper(w, dragEvent); + break; + } +#endif + while (w) { + if (w->isEnabled() && w->acceptDrops()) { + res = d->notify_helper(w, dragEvent); + if (res && dragEvent->isAccepted()) { + QDragManager::self()->setCurrentTarget(w); + break; + } + } + if (w->isWindow()) + break; + dragEvent->p = w->mapToParent(dragEvent->p); + w = w->parentWidget(); + } + } + break; + case QEvent::DragMove: + case QEvent::Drop: + case QEvent::DragLeave: { + QWidget* w = static_cast<QWidget *>(receiver); +#ifndef QT_NO_GRAPHICSVIEW + // QGraphicsProxyWidget handles its own propagation, + // and we must not change QDragManagers currentTarget. + QWExtra *extra = w->window()->d_func()->extra; + bool isProxyWidget = extra && extra->proxyWidget; + if (!isProxyWidget) +#endif + w = QDragManager::self()->currentTarget(); + + if (!w) { +#ifdef Q_WS_MAC + // HIView has a slight difference in how it delivers events to children and parents + // It will not give an enter to a child's parent when it leaves the child. + if (e->type() == QEvent::DragLeave) + break; + // Assume that w did not get an enter. + QDropEvent *dropEvent = static_cast<QDropEvent *>(e); + QDragEnterEvent dragEnterEvent(dropEvent->pos(), dropEvent->possibleActions(), + dropEvent->mimeData(), dropEvent->mouseButtons(), + dropEvent->keyboardModifiers()); + QApplication::sendEvent(receiver, &dragEnterEvent); + w = QDragManager::self()->currentTarget(); + if (!w) +#endif + break; + } + if (e->type() == QEvent::DragMove || e->type() == QEvent::Drop) { + QDropEvent *dragEvent = static_cast<QDropEvent *>(e); + QWidget *origReciver = static_cast<QWidget *>(receiver); + while (origReciver && w != origReciver) { + dragEvent->p = origReciver->mapToParent(dragEvent->p); + origReciver = origReciver->parentWidget(); + } + } + res = d->notify_helper(w, e); + if (e->type() != QEvent::DragMove +#ifndef QT_NO_GRAPHICSVIEW + && !isProxyWidget +#endif + ) + QDragManager::self()->setCurrentTarget(0, e->type() == QEvent::Drop); + } + break; +#endif + + default: + res = d->notify_helper(receiver, e); + break; + } + + return res; +} + +bool QApplicationPrivate::notify_helper(QObject *receiver, QEvent * e) +{ + // send to all application event filters + if (sendThroughApplicationEventFilters(receiver, e)) + return true; + + if (receiver->isWidgetType()) { + QWidget *widget = static_cast<QWidget *>(receiver); + +#if !defined(Q_OS_WINCE) || (defined(GWES_ICONCURS) && !defined(QT_NO_CURSOR)) + // toggle HasMouse widget state on enter and leave + if ((e->type() == QEvent::Enter || e->type() == QEvent::DragEnter) && + (!qApp->activePopupWidget() || qApp->activePopupWidget() == widget->window())) + widget->setAttribute(Qt::WA_UnderMouse, true); + else if (e->type() == QEvent::Leave || e->type() == QEvent::DragLeave) + widget->setAttribute(Qt::WA_UnderMouse, false); +#endif + + if (QLayout *layout=widget->d_func()->layout) { + layout->widgetEvent(e); + } + } + + // send to all receiver event filters + if (sendThroughObjectEventFilters(receiver, e)) + return true; + + // deliver the event + bool consumed = receiver->event(e); + e->spont = false; + return consumed; +} + + +/*! + \class QSessionManager + \brief The QSessionManager class provides access to the session manager. + + \ingroup application + \ingroup environment + + A session manager in a desktop environment (in which Qt GUI + applications live) keeps track of a session, which is a group of + running applications, each of which has a particular state. The + state of an application contains (most notably) the documents the + application has open and the position and size of its windows. + + The session manager is used to save the session, e.g. when the + machine is shut down, and to restore a session, e.g. when the + machine is started up. We recommend that you use QSettings to save + an individual application's settings, e.g. window positions, + recently used files, etc. When the application is restarted by the + session manager, you can restore the settings. + + QSessionManager provides an interface between the application + and the session manager so that the program can work well with the + session manager. In Qt, session management requests for action are + handled by the two virtual functions QApplication::commitData() + and QApplication::saveState(). Both provide a reference to a + session manager object as argument, to allow the application to + communicate with the session manager. The session manager can only + be accessed through these functions. + + No user interaction is possible \e unless the application gets + explicit permission from the session manager. You ask for permission + by calling allowsInteraction() or, if it's really urgent, + allowsErrorInteraction(). Qt does not enforce this, but the session + manager may. + + You can try to abort the shutdown process by calling cancel(). The + default commitData() function does this if some top-level window + rejected its closeEvent(). + + For sophisticated session managers provided on Unix/X11, QSessionManager + offers further possibilities to fine-tune an application's session + management behavior: setRestartCommand(), setDiscardCommand(), + setRestartHint(), setProperty(), requestPhase2(). See the respective + function descriptions for further details. + + \sa QApplication, {Session Management} +*/ + +/*! \enum QSessionManager::RestartHint + + This enum type defines the circumstances under which this + application wants to be restarted by the session manager. The + current values are + + \value RestartIfRunning if the application is still running when + the session is shut down, it wants to be restarted at the start of + the next session. + + \value RestartAnyway the application wants to be started at the + start of the next session, no matter what. (This is useful for + utilities that run just after startup and then quit.) + + \value RestartImmediately the application wants to be started + immediately whenever it is not running. + + \value RestartNever the application does not want to be restarted + automatically. + + The default hint is \c RestartIfRunning. +*/ + + +/*! + \fn QString QSessionManager::sessionId() const + + Returns the identifier of the current session. + + If the application has been restored from an earlier session, this + identifier is the same as it was in that earlier session. + + \sa sessionKey(), QApplication::sessionId() + */ + +/*! + \fn QString QSessionManager::sessionKey() const + + Returns the session key in the current session. + + If the application has been restored from an earlier session, this + key is the same as it was when the previous session ended. + + The session key changes with every call of commitData() or + saveState(). + + \sa sessionId(), QApplication::sessionKey() + */ + +/*! + \fn void* QSessionManager::handle() const + + \internal +*/ + +/*! + \fn bool QSessionManager::allowsInteraction() + + Asks the session manager for permission to interact with the + user. Returns true if interaction is permitted; otherwise + returns false. + + The rationale behind this mechanism is to make it possible to + synchronize user interaction during a shutdown. Advanced session + managers may ask all applications simultaneously to commit their + data, resulting in a much faster shutdown. + + When the interaction is completed we strongly recommend releasing the + user interaction semaphore with a call to release(). This way, other + applications may get the chance to interact with the user while your + application is still busy saving data. (The semaphore is implicitly + released when the application exits.) + + If the user decides to cancel the shutdown process during the + interaction phase, you must tell the session manager that this has + happened by calling cancel(). + + Here's an example of how an application's QApplication::commitData() + might be implemented: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 8 + + If an error occurred within the application while saving its data, + you may want to try allowsErrorInteraction() instead. + + \sa QApplication::commitData(), release(), cancel() +*/ + + +/*! + \fn bool QSessionManager::allowsErrorInteraction() + + Returns true if error interaction is permitted; otherwise returns false. + + This is similar to allowsInteraction(), but also enables the application + to tell the user about any errors that occur. Session managers + may give error interaction requests higher priority, which means that it + is more likely that an error interaction is permitted. However, you are + still not guaranteed that the session manager will allow interaction. + + \sa allowsInteraction(), release(), cancel() +*/ + +/*! + \fn void QSessionManager::release() + + Releases the session manager's interaction semaphore after an + interaction phase. + + \sa allowsInteraction(), allowsErrorInteraction() +*/ + +/*! + \fn void QSessionManager::cancel() + + Tells the session manager to cancel the shutdown process. Applications + should not call this function without first asking the user. + + \sa allowsInteraction(), allowsErrorInteraction() + +*/ + +/*! + \fn void QSessionManager::setRestartHint(RestartHint hint) + + Sets the application's restart hint to \a hint. On application + startup the hint is set to \c RestartIfRunning. + + Note that these flags are only hints, a session manager may or may + not respect them. + + We recommend setting the restart hint in QApplication::saveState() + because most session managers perform a checkpoint shortly after an + application's startup. + + \sa restartHint() +*/ + +/*! + \fn QSessionManager::RestartHint QSessionManager::restartHint() const + + Returns the application's current restart hint. The default is + \c RestartIfRunning. + + \sa setRestartHint() +*/ + +/*! + \fn void QSessionManager::setRestartCommand(const QStringList& command) + + If the session manager is capable of restoring sessions it will + execute \a command in order to restore the application. The command + defaults to + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 9 + + The \c -session option is mandatory; otherwise QApplication cannot + tell whether it has been restored or what the current session + identifier is. See QApplication::isSessionRestored() and + QApplication::sessionId() for details. + + If your application is very simple, it may be possible to store the + entire application state in additional command line options. This + is usually a very bad idea because command lines are often limited + to a few hundred bytes. Instead, use QSettings, or temporary files + or a database for this purpose. By marking the data with the unique + sessionId(), you will be able to restore the application in a future + session. + + \sa restartCommand(), setDiscardCommand(), setRestartHint() +*/ + +/*! + \fn QStringList QSessionManager::restartCommand() const + + Returns the currently set restart command. + + To iterate over the list, you can use the \l foreach + pseudo-keyword: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 10 + + \sa setRestartCommand(), restartHint() +*/ + +/*! + \fn void QSessionManager::setDiscardCommand(const QStringList& list) + + Sets the discard command to the given \a list. + + \sa discardCommand(), setRestartCommand() +*/ + + +/*! + \fn QStringList QSessionManager::discardCommand() const + + Returns the currently set discard command. + + To iterate over the list, you can use the \l foreach + pseudo-keyword: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 11 + + \sa setDiscardCommand(), restartCommand(), setRestartCommand() +*/ + +/*! + \fn void QSessionManager::setManagerProperty(const QString &name, const QString &value) + \overload + + Low-level write access to the application's identification and state + records are kept in the session manager. + + The property called \a name has its value set to the string \a value. +*/ + +/*! + \fn void QSessionManager::setManagerProperty(const QString& name, + const QStringList& value) + + Low-level write access to the application's identification and state + record are kept in the session manager. + + The property called \a name has its value set to the string list \a value. +*/ + +/*! + \fn bool QSessionManager::isPhase2() const + + Returns true if the session manager is currently performing a second + session management phase; otherwise returns false. + + \sa requestPhase2() +*/ + +/*! + \fn void QSessionManager::requestPhase2() + + Requests a second session management phase for the application. The + application may then return immediately from the + QApplication::commitData() or QApplication::saveState() function, + and they will be called again once most or all other applications have + finished their session management. + + The two phases are useful for applications such as the X11 window manager + that need to store information about another application's windows + and therefore have to wait until these applications have completed their + respective session management tasks. + + Note that if another application has requested a second phase it + may get called before, simultaneously with, or after your + application's second phase. + + \sa isPhase2() +*/ + +/***************************************************************************** + Stubbed session management support + *****************************************************************************/ +#ifndef QT_NO_SESSIONMANAGER +#if defined(Q_WS_WIN) || defined(Q_WS_MAC) || defined(Q_WS_QWS) + +#if defined(Q_OS_WINCE) +HRESULT qt_CoCreateGuid(GUID* guid) +{ + // We will use the following information to create the GUID + // 1. absolute path to application + wchar_t tempFilename[512]; + if (!GetModuleFileNameW(0, tempFilename, 512)) + return S_FALSE; + unsigned int hash = qHash(QString::fromUtf16((const unsigned short *) tempFilename)); + guid->Data1 = hash; + // 2. creation time of file + QFileInfo info(QString::fromUtf16((const unsigned short *) tempFilename)); + guid->Data2 = qHash(info.created().toTime_t()); + // 3. current system time + guid->Data3 = qHash(QDateTime::currentDateTime().toTime_t()); + return S_OK; +} +#if !defined(OLE32_MCOMGUID) || defined(QT_WINCE_FORCE_CREATE_GUID) +#define CoCreateGuid qt_CoCreateGuid +#endif + +#endif + +class QSessionManagerPrivate : public QObjectPrivate +{ +public: + QStringList restartCommand; + QStringList discardCommand; + QString sessionId; + QString sessionKey; + QSessionManager::RestartHint restartHint; +}; + +QSessionManager* qt_session_manager_self = 0; +QSessionManager::QSessionManager(QApplication * app, QString &id, QString &key) + : QObject(*new QSessionManagerPrivate, app) +{ + Q_D(QSessionManager); + setObjectName(QLatin1String("qt_sessionmanager")); + qt_session_manager_self = this; +#if defined(Q_WS_WIN) + wchar_t guidstr[40]; + GUID guid; + CoCreateGuid(&guid); + StringFromGUID2(guid, guidstr, 40); + id = QString::fromUtf16((ushort*)guidstr); + CoCreateGuid(&guid); + StringFromGUID2(guid, guidstr, 40); + key = QString::fromUtf16((ushort*)guidstr); +#endif + d->sessionId = id; + d->sessionKey = key; + d->restartHint = RestartIfRunning; +} + +QSessionManager::~QSessionManager() +{ + qt_session_manager_self = 0; +} + +QString QSessionManager::sessionId() const +{ + Q_D(const QSessionManager); + return d->sessionId; +} + +QString QSessionManager::sessionKey() const +{ + Q_D(const QSessionManager); + return d->sessionKey; +} + + +#if defined(Q_WS_X11) || defined(Q_WS_MAC) +void* QSessionManager::handle() const +{ + return 0; +} +#endif + +#if !defined(Q_WS_WIN) +bool QSessionManager::allowsInteraction() +{ + return true; +} + +bool QSessionManager::allowsErrorInteraction() +{ + return true; +} +void QSessionManager::release() +{ +} + +void QSessionManager::cancel() +{ +} +#endif + + +void QSessionManager::setRestartHint(QSessionManager::RestartHint hint) +{ + Q_D(QSessionManager); + d->restartHint = hint; +} + +QSessionManager::RestartHint QSessionManager::restartHint() const +{ + Q_D(const QSessionManager); + return d->restartHint; +} + +void QSessionManager::setRestartCommand(const QStringList& command) +{ + Q_D(QSessionManager); + d->restartCommand = command; +} + +QStringList QSessionManager::restartCommand() const +{ + Q_D(const QSessionManager); + return d->restartCommand; +} + +void QSessionManager::setDiscardCommand(const QStringList& command) +{ + Q_D(QSessionManager); + d->discardCommand = command; +} + +QStringList QSessionManager::discardCommand() const +{ + Q_D(const QSessionManager); + return d->discardCommand; +} + +void QSessionManager::setManagerProperty(const QString&, const QString&) +{ +} + +void QSessionManager::setManagerProperty(const QString&, const QStringList&) +{ +} + +bool QSessionManager::isPhase2() const +{ + return false; +} + +void QSessionManager::requestPhase2() +{ +} + +#endif +#endif // QT_NO_SESSIONMANAGER + +/*! + \typedef QApplication::ColorMode + \compat + + Use ColorSpec instead. +*/ + +/*! + \fn Qt::MacintoshVersion QApplication::macVersion() + + Use QSysInfo::MacintoshVersion instead. +*/ + +/*! + \fn QApplication::ColorMode QApplication::colorMode() + + Use colorSpec() instead, and use ColorSpec as the enum type. +*/ + +/*! + \fn void QApplication::setColorMode(ColorMode mode) + + Use setColorSpec() instead, and pass a ColorSpec value instead. +*/ + +/*! + \fn bool QApplication::hasGlobalMouseTracking() + + This feature does not exist anymore. This function + always returns true in Qt 4. +*/ + +/*! + \fn void QApplication::setGlobalMouseTracking(bool dummy) + + This function does nothing in Qt 4. The \a dummy parameter + is ignored. +*/ + +/*! + \fn void QApplication::flushX() + + Use flush() instead. +*/ + +/*! + \fn void QApplication::setWinStyleHighlightColor(const QColor &c) + + Use the palette instead. + + \oldcode + app.setWinStyleHighlightColor(color); + \newcode + QPalette palette(qApp->palette()); + palette.setColor(QPalette::Highlight, color); + qApp->setPalette(palette); + \endcode +*/ + +/*! + \fn void QApplication::setPalette(const QPalette &pal, bool b, const char* className = 0) + + Use the two-argument overload instead. +*/ + +/*! + \fn void QApplication::setFont(const QFont &font, bool b, const char* className = 0) + + Use the two-argument overload instead. +*/ + +/*! + \fn const QColor &QApplication::winStyleHighlightColor() + + Use qApp->palette().color(QPalette::Active, QPalette::Highlight) + instead. +*/ + +/*! + \fn QWidget *QApplication::widgetAt(int x, int y, bool child) + + Use the two-argument widgetAt() overload to get the child widget. + To get the top-level widget do this: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 12 +*/ + +/*! + \fn QWidget *QApplication::widgetAt(const QPoint &point, bool child) + + Use the single-argument widgetAt() overload to get the child widget. + To get the top-level widget do this: + + \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 13 +*/ + +#ifdef QT3_SUPPORT +QWidget *QApplication::mainWidget() +{ + return QApplicationPrivate::main_widget; +} +#endif +bool QApplicationPrivate::inPopupMode() const +{ + return QApplicationPrivate::popupWidgets != 0; +} + +/*! + \property QApplication::quitOnLastWindowClosed + + \brief whether the application implicitly quits when the last window is + closed. + + The default is true. + + If this property is true, the applications quits when the last visible + primary window (i.e. window with no parent) with the Qt::WA_QuitOnClose + attribute set is closed. By default this attribute is set for all widgets + except for sub-windows. Refer to \l{Qt::WindowType} for a detailed list of + Qt::Window objects. + + \sa quit(), QWidget::close() + */ + +void QApplication::setQuitOnLastWindowClosed(bool quit) +{ + QApplicationPrivate::quitOnLastWindowClosed = quit; +} + +bool QApplication::quitOnLastWindowClosed() +{ + return QApplicationPrivate::quitOnLastWindowClosed; +} + +void QApplicationPrivate::emitLastWindowClosed() +{ + if (qApp && qApp->d_func()->in_exec) { + if (QApplicationPrivate::quitOnLastWindowClosed) { + // get ready to quit, this event might be removed if the + // event loop is re-entered, however + QApplication::postEvent(qApp, new QEvent(QEvent::Quit)); + } + emit qApp->lastWindowClosed(); + } +} + +/*! \variable QApplication::NormalColors + \compat + + Use \l NormalColor instead. +*/ + +/*! \variable QApplication::CustomColors + \compat + + Use \l CustomColor instead. +*/ + +#ifdef QT_KEYPAD_NAVIGATION +/*! + Sets whether Qt should use focus navigation suitable for use with a + minimal keypad. + + If \a enable is true, Qt::Key_Up and Qt::Key_Down are used to + change focus. + + This feature is only available in Qt for Embedded Linux. + + \sa keypadNavigationEnabled() +*/ +void QApplication::setKeypadNavigationEnabled(bool enable) +{ + QApplicationPrivate::keypadNavigation = enable; +} + +/*! + Returns true if Qt is set to use keypad navigation; otherwise returns + false. The default is false. + + This feature is only available in Qt for Embedded Linux. + \sa setKeypadNavigationEnabled() +*/ +bool QApplication::keypadNavigationEnabled() +{ + return QApplicationPrivate::keypadNavigation; +} +#endif + +/*! + \fn void QApplication::alert(QWidget *widget, int msec) + \since 4.3 + + Causes an alert to be shown for \a widget if the window is not the active + window. The alert is shown for \a msec miliseconds. If \a msec is zero (the + default), then the alert is shown indefinitely until the window becomes + active again. + + Currently this function does nothing on Qt for Embedded Linux. + + On Mac OS X, this works more at the application level and will cause the + application icon to bounce in the dock. + + On Windows this causes the window's taskbar entry to flash for a time. If \a + msec is zero, the flashing will stop and the taskbar entry will turn a + different color (currently orange). + + On X11, this will cause the window to be marked as "demands attention", + the window must not be hidden (i.e. not have hide() called on it, but be + visible in some sort of way) in order for this to work. +*/ + +/*! + \property QApplication::cursorFlashTime + \brief the text cursor's flash (blink) time in milliseconds + + The flash time is the time required to display, invert and + restore the caret display. Usually the text cursor is displayed + for half the cursor flash time, then hidden for the same amount + of time, but this may vary. + + The default value on X11 is 1000 milliseconds. On Windows, the + control panel value is used. Widgets should not cache this value + since it may be changed at any time by the user changing the + global desktop settings. + + Note that on Microsoft Windows, setting this property sets the + cursor flash time for all applications. +*/ + +/*! + \property QApplication::doubleClickInterval + \brief the time limit in milliseconds that distinguishes a double click from two + consecutive mouse clicks + + The default value on X11 is 400 milliseconds. On Windows and Mac + OS X, the operating system's value is used. + + On Microsoft Windows, calling this function sets the + double click interval for all applications. +*/ + +/*! + \property QApplication::keyboardInputInterval + \brief the time limit in milliseconds that distinguishes a key press + from two consecutive key presses + \since 4.2 + + The default value on X11 is 400 milliseconds. On Windows and Mac OS X, the + operating system's value is used. +*/ + +/*! + \property QApplication::wheelScrollLines + \brief the number of lines to scroll a widget, when the + mouse wheel is rotated. + + If the value exceeds the widget's number of visible lines, the + widget should interpret the scroll operation as a single \e{page + up} or \e{page down}. If the widget is an \l{QAbstractItemView} + {item view class}, then the result of scrolling one \e line + depends on the setting of the widget's + \l{QAbstractItemView::verticalScrollMode()} {scroll mode}. Scroll + one \e line can mean \l{QAbstractItemView::ScrollPerItem} {scroll + one item} or \l{QAbstractItemView::ScrollPerPixel} {scroll one + pixel}. + + By default, this property has a value of 3. +*/ + +/*! + \fn void QApplication::setEffectEnabled(Qt::UIEffect effect, bool enable) + + Enables the UI effect \a effect if \a enable is true, otherwise + the effect will not be used. + + Note: All effects are disabled on screens running at less than + 16-bit color depth. + + \sa isEffectEnabled(), Qt::UIEffect, setDesktopSettingsAware() +*/ + +/*! + \fn bool QApplication::isEffectEnabled(Qt::UIEffect effect) + + Returns true if \a effect is enabled; otherwise returns false. + + By default, Qt will try to use the desktop settings. Call + setDesktopSettingsAware(false) to prevent this. + + Note: All effects are disabled on screens running at less than + 16-bit color depth. + + \sa setEffectEnabled(), Qt::UIEffect +*/ + +/*! + \fn QWidget *QApplication::mainWidget() + + Returns the main application widget, or 0 if there is no main + widget. +*/ + +/*! + \fn void QApplication::setMainWidget(QWidget *mainWidget) + + Sets the application's main widget to \a mainWidget. + + In most respects the main widget is like any other widget, except + that if it is closed, the application exits. Note that + QApplication does \e not take ownership of the \a mainWidget, so + if you create your main widget on the heap you must delete it + yourself. + + You need not have a main widget; connecting lastWindowClosed() to + quit() is an alternative. + + For X11, this function also resizes and moves the main widget + according to the \e -geometry command-line option, so you should + set the default geometry (using \l QWidget::setGeometry()) before + calling setMainWidget(). + + \sa mainWidget(), exec(), quit() +*/ + +/*! + \fn void QApplication::beep() + + Sounds the bell, using the default volume and sound. The function + is \e not available in Qt for Embedded Linux. +*/ + +/*! + \fn void QApplication::setOverrideCursor(const QCursor &cursor) + + Sets the application override cursor to \a cursor. + + Application override cursors are intended for showing the user + that the application is in a special state, for example during an + operation that might take some time. + + This cursor will be displayed in all the application's widgets + until restoreOverrideCursor() or another setOverrideCursor() is + called. + + Application cursors are stored on an internal stack. + setOverrideCursor() pushes the cursor onto the stack, and + restoreOverrideCursor() pops the active cursor off the + stack. changeOverrideCursor() changes the curently active + application override cursor. Every setOverrideCursor() must + eventually be followed by a corresponding restoreOverrideCursor(), + otherwise the stack will never be emptied. + + Example: + \snippet doc/src/snippets/code/src_gui_kernel_qapplication_x11.cpp 0 + + \sa overrideCursor() restoreOverrideCursor() changeOverrideCursor() QWidget::setCursor() +*/ + +/*! + \fn void QApplication::restoreOverrideCursor() + + Undoes the last setOverrideCursor(). + + If setOverrideCursor() has been called twice, calling + restoreOverrideCursor() will activate the first cursor set. + Calling this function a second time restores the original widgets' + cursors. + + \sa setOverrideCursor(), overrideCursor() +*/ + +/*! + \macro qApp + \relates QApplication + + A global pointer referring to the unique application object. It is + equivalent to the pointer returned by the + QCoreApplication::instance() function except that, in GUI applications, + it is a pointer to a QApplication instance. + + Only one application object can be created. + + \sa QCoreApplication::instance() +*/ + +// ************************************************************************ +// Input Method support +// ************************************************************************ + +/*! + This function replaces the QInputContext instance used by the + application with \a inputContext. + + \sa inputContext() +*/ +void QApplication::setInputContext(QInputContext *inputContext) +{ + Q_D(QApplication); + Q_UNUSED(d);// only static members being used. + if (!inputContext) { + qWarning("QApplication::setInputContext: called with 0 input context"); + return; + } + if (d->inputContext) + delete d->inputContext; + d->inputContext = inputContext; +} + +/*! + Returns the QInputContext instance used by the application. + + \sa setInputContext() +*/ +QInputContext *QApplication::inputContext() const +{ + Q_D(const QApplication); + Q_UNUSED(d);// only static members being used. +#ifdef Q_WS_X11 + if (!X11) + return 0; + if (!d->inputContext) { + QApplication *that = const_cast<QApplication *>(this); + QInputContext *qic = QInputContextFactory::create(X11->default_im, that); + // fallback to default X Input Method. + if (!qic) + qic = QInputContextFactory::create(QLatin1String("xim"), that); + that->d_func()->inputContext = qic; + } +#endif + return d->inputContext; +} + +//Returns the current platform used by keyBindings +uint QApplicationPrivate::currentPlatform(){ + uint platform = KB_Win; +#ifdef Q_WS_MAC + platform = KB_Mac; +#elif defined Q_WS_X11 + platform = KB_X11; + if (X11->desktopEnvironment == DE_KDE) + platform |= KB_KDE; + if (X11->desktopEnvironment == DE_GNOME) + platform |= KB_Gnome; + if (X11->desktopEnvironment == DE_CDE) + platform |= KB_CDE; +#endif + return platform; +} + +bool qt_sendSpontaneousEvent(QObject *receiver, QEvent *event) +{ + return QCoreApplication::sendSpontaneousEvent(receiver, event); +} + + +/*! + \since 4.2 + + Returns the current keyboard input locale. +*/ +QLocale QApplication::keyboardInputLocale() +{ + if (!QApplicationPrivate::checkInstance("keyboardInputLocale")) + return QLocale::c(); + return qt_keymapper_private()->keyboardInputLocale; +} + +/*! + \since 4.2 + + Returns the current keyboard input direction. +*/ +Qt::LayoutDirection QApplication::keyboardInputDirection() +{ + if (!QApplicationPrivate::checkInstance("keyboardInputDirection")) + return Qt::LeftToRight; + return qt_keymapper_private()->keyboardInputDirection; +} + +bool QApplicationPrivate::shouldSetFocus(QWidget *w, Qt::FocusPolicy policy) +{ + QWidget *f = w; + while (f->d_func()->extra && f->d_func()->extra->focus_proxy) + f = f->d_func()->extra->focus_proxy; + + if ((w->focusPolicy() & policy) != policy) + return false; + if (w != f && (f->focusPolicy() & policy) != policy) + return false; + return true; +} + +QT_END_NAMESPACE + +#include "moc_qapplication.cpp" |