Long live Qt!

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+/****************************************************************************
+**
+** 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QAPPLICATION_P_H
+#define QAPPLICATION_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of qapplication_*.cpp, qwidget*.cpp, qcolor_x11.cpp, qfiledialog.cpp
+// and many other.  This header file may change from version to version
+// without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qapplication.h"
+#include "QtGui/qfont.h"
+#include "QtGui/qcursor.h"
+#include "QtGui/qregion.h"
+#include "QtCore/qmutex.h"
+#include "QtCore/qtranslator.h"
+#include "QtCore/qbasictimer.h"
+#include "QtCore/qhash.h"
+#include "QtCore/qpointer.h"
+#include "private/qcoreapplication_p.h"
+#include "private/qshortcutmap_p.h"
+#include <private/qthread_p.h>
+#ifdef Q_WS_QWS
+#include "QtGui/qscreen_qws.h"
+#include <private/qgraphicssystem_qws_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QClipboard;
+class QGraphicsScene;
+class QGraphicsSystem;
+class QInputContext;
+class QKeyEvent;
+class QMouseEvent;
+class QObject;
+class QWheelEvent;
+class QWidget;
+
+extern bool qt_is_gui_used;
+#ifndef QT_NO_CLIPBOARD
+extern QClipboard *qt_clipboard;
+#endif
+
+#if defined (Q_OS_WIN32) || defined (Q_OS_CYGWIN) || defined(Q_OS_WINCE)
+extern QSysInfo::WinVersion qt_winver;
+enum { QT_TABLET_NPACKETQSIZE = 128 };
+# ifdef Q_OS_WINCE
+  extern DWORD qt_cever;
+# endif
+#elif defined (Q_OS_MAC)
+extern QSysInfo::MacVersion qt_macver;
+#endif
+#if defined(Q_WS_QWS)
+class QWSManager;
+class QDirectPainter;
+#endif
+
+#ifndef QT_NO_TABLET
+struct QTabletDeviceData
+{
+#ifndef Q_WS_MAC
+    int minPressure;
+    int maxPressure;
+    int minTanPressure;
+    int maxTanPressure;
+    int minX, maxX, minY, maxY, minZ, maxZ;
+    inline QPointF scaleCoord(int coordX, int coordY, int outOriginX, int outExtentX,
+                              int outOriginY, int outExtentY) const;
+#endif
+
+#if defined(Q_WS_X11) || (defined(Q_WS_MAC) && !defined(QT_MAC_USE_COCOA))
+    QPointer<QWidget> widgetToGetPress;
+#endif
+
+#ifdef Q_WS_X11
+    int deviceType;
+    enum {
+        TOTAL_XINPUT_EVENTS = 64
+    };
+    void *device;
+    int eventCount;
+    long unsigned int eventList[TOTAL_XINPUT_EVENTS]; // XEventClass is in fact a long unsigned int
+
+    int xinput_motion;
+    int xinput_key_press;
+    int xinput_key_release;
+    int xinput_button_press;
+    int xinput_button_release;
+    int xinput_proximity_in;
+    int xinput_proximity_out;
+#elif defined(Q_WS_WIN)
+    qint64 llId;
+    int currentDevice;
+    int currentPointerType;
+#elif defined(Q_WS_MAC)
+    quint64 tabletUniqueID;
+    int tabletDeviceType;
+    int tabletPointerType;
+    int capabilityMask;
+#endif
+};
+
+static inline int sign(int x)
+{
+    return x >= 0 ? 1 : -1;
+}
+
+#ifndef Q_WS_MAC
+inline QPointF QTabletDeviceData::scaleCoord(int coordX, int coordY,
+                                            int outOriginX, int outExtentX,
+                                            int outOriginY, int outExtentY) const
+{
+    QPointF ret;
+    if (sign(outExtentX) == sign(maxX))
+        ret.setX(((coordX - minX) * qAbs(outExtentX) / qAbs(qreal(maxX))) + outOriginX);
+    else
+        ret.setX(((qAbs(maxX) - (coordX - minX)) * qAbs(outExtentX) / qAbs(qreal(maxX)))
+                 + outOriginX);
+
+    if (sign(outExtentY) == sign(maxY))
+        ret.setY(((coordY - minY) * qAbs(outExtentY) / qAbs(qreal(maxY))) + outOriginY);
+    else
+        ret.setY(((qAbs(maxY) - (coordY - minY)) * qAbs(outExtentY) / qAbs(qreal(maxY)))
+                 + outOriginY);
+    return ret;
+}
+#endif
+
+typedef QList<QTabletDeviceData> QTabletDeviceDataList;
+QTabletDeviceDataList *qt_tablet_devices();
+# if defined(Q_WS_MAC)
+typedef QHash<int, QTabletDeviceData> QMacTabletHash;
+QMacTabletHash *qt_mac_tablet_hash();
+# endif
+#endif
+
+#ifdef QT3_SUPPORT
+extern "C" {
+    typedef bool (*Ptrqt_tryAccelEvent)(QWidget *w, QKeyEvent *e);
+    typedef bool (*Ptrqt_tryComposeUnicode)(QWidget *w, QKeyEvent *e);
+    typedef bool (*Ptrqt_dispatchAccelEvent)(QWidget *w, QKeyEvent *e);
+}
+#endif
+
+class QScopedLoopLevelCounter
+{
+    QThreadData *threadData;
+public:
+    QScopedLoopLevelCounter(QThreadData *threadData)
+        : threadData(threadData)
+    { ++threadData->loopLevel; }
+    ~QScopedLoopLevelCounter()
+    { --threadData->loopLevel; }
+};
+
+class Q_GUI_EXPORT QApplicationPrivate : public QCoreApplicationPrivate
+{
+    Q_DECLARE_PUBLIC(QApplication)
+public:
+    QApplicationPrivate(int &argc, char **argv, QApplication::Type type);
+    ~QApplicationPrivate();
+
+#if defined(Q_WS_X11)
+#ifndef QT_NO_SETTINGS
+    static QString kdeHome();
+    static bool x11_apply_settings();
+#endif
+    static void reset_instance_pointer();
+#elif defined(Q_WS_QWS)
+    static bool qws_apply_settings();
+    static QWidget *findWidget(const QObjectList&, const QPoint &, bool rec);
+#endif
+    static bool quitOnLastWindowClosed;
+    static void emitLastWindowClosed();
+#ifdef Q_OS_WINCE
+    static int autoMaximizeThreshold;
+    static bool autoSipEnabled;
+#endif
+
+    static QGraphicsSystem *graphicsSystem()
+#if !defined(Q_WS_QWS)
+    { return graphics_system; }
+#else
+    { return QScreen::instance()->graphicsSystem(); }
+#endif
+
+    void createEventDispatcher();
+    QString appName() const;
+
+    static void dispatchEnterLeave(QWidget *enter, QWidget *leave);
+
+    //modality
+    static void enterModal(QWidget*);
+    static void leaveModal(QWidget*);
+    static void enterModal_sys(QWidget*);
+    static void leaveModal_sys(QWidget*);
+    static bool isBlockedByModal(QWidget *widget);
+    static bool modalState();
+    static bool tryModalHelper(QWidget *widget, QWidget **rettop = 0);
+#ifdef Q_WS_MAC
+    static QWidget *tryModalHelper_sys(QWidget *top);
+	bool canQuit();
+#endif
+
+    bool notify_helper(QObject *receiver, QEvent * e);
+
+    void construct(
+#ifdef Q_WS_X11
+                   Display *dpy = 0, Qt::HANDLE visual = 0, Qt::HANDLE cmap = 0
+#endif
+                   );
+    void initialize();
+    void process_cmdline();
+
+#if defined(Q_WS_X11)
+    static void x11_initialize_style();
+#endif
+
+    enum KeyPlatform {
+        KB_Win = 1,
+        KB_Mac = 2,
+        KB_X11 = 4,
+        KB_KDE = 8,
+        KB_Gnome = 16,
+        KB_CDE = 32,
+        KB_All = 0xffff
+    };
+
+    static uint currentPlatform();
+    bool inPopupMode() const;
+    void closePopup(QWidget *popup);
+    void openPopup(QWidget *popup);
+    static void setFocusWidget(QWidget *focus, Qt::FocusReason reason);
+    static QWidget *focusNextPrevChild_helper(QWidget *toplevel, bool next);
+
+#ifndef QT_NO_SESSIONMANAGER
+    QSessionManager *session_manager;
+    QString session_id;
+    QString session_key;
+    bool is_session_restored;
+#endif
+
+#ifndef QT_NO_CURSOR
+    QList<QCursor> cursor_list;
+#endif
+#ifndef QT_NO_GRAPHICSVIEW
+    // Maintain a list of all scenes to ensure font and palette propagation to
+    // all scenes.
+    QList<QGraphicsScene *> scene_list;
+#endif
+
+    QBasicTimer toolTipWakeUp, toolTipFallAsleep;
+    QPoint toolTipPos, toolTipGlobalPos, hoverGlobalPos;
+    QPointer<QWidget> toolTipWidget;
+#ifndef QT_NO_SHORTCUT
+    QShortcutMap shortcutMap;
+#endif
+
+#ifdef QT3_SUPPORT
+    bool qt_compat_used;
+    bool qt_compat_resolved;
+    Ptrqt_tryAccelEvent qt_tryAccelEvent;
+    Ptrqt_tryComposeUnicode qt_tryComposeUnicode;
+    Ptrqt_dispatchAccelEvent qt_dispatchAccelEvent;
+
+    bool use_compat() {
+        return qt_tryAccelEvent
+               && qt_tryComposeUnicode
+               && qt_dispatchAccelEvent;
+    }
+#endif
+    static QInputContext *inputContext;
+
+    static Qt::MouseButtons mouse_buttons;
+    static Qt::KeyboardModifiers modifier_buttons;
+
+    static QSize app_strut;
+    static QWidgetList *popupWidgets;
+    static QStyle *app_style;
+    static int app_cspec;
+    static QPalette *app_pal;
+    static QPalette *sys_pal;
+    static QPalette *set_pal;
+    static QGraphicsSystem *graphics_system;
+    static QString graphics_system_name;
+
+private:
+    static QFont *app_font; // private for a reason! Always use QApplication::font() instead!
+public:
+    static QFont *sys_font;
+    static QFont *set_font;
+    static QWidget *main_widget;
+    static QWidget *focus_widget;
+    static QWidget *hidden_focus_widget;
+    static QWidget *active_window;
+    static QIcon *app_icon;
+    static bool obey_desktop_settings;
+    static int  cursor_flash_time;
+    static int  mouse_double_click_time;
+    static int  keyboard_input_time;
+    static int  wheel_scroll_lines;
+
+    static bool animate_ui;
+    static bool animate_menu;
+    static bool animate_tooltip;
+    static bool animate_combo;
+    static bool fade_menu;
+    static bool fade_tooltip;
+    static bool animate_toolbox;
+    static bool widgetCount; // Coupled with -widgetcount switch
+#ifdef Q_WS_MAC
+    static bool native_modal_dialog_active;
+#endif
+#if defined(Q_WS_WIN) && !defined(Q_OS_WINCE)
+    static bool inSizeMove;
+#endif
+
+    static void setSystemPalette(const QPalette &pal);
+    static void setPalette_helper(const QPalette &palette, const char* className, bool clearWidgetPaletteHash);
+    static void initializeWidgetPaletteHash();
+    static void setSystemFont(const QFont &font);
+
+#if defined(Q_WS_X11)
+    static void applyX11SpecificCommandLineArguments(QWidget *main_widget);
+#elif defined(Q_WS_QWS)
+    static void applyQWSSpecificCommandLineArguments(QWidget *main_widget);
+#endif
+
+#ifdef Q_WS_MAC
+    static OSStatus globalEventProcessor(EventHandlerCallRef, EventRef, void *);
+    static OSStatus globalAppleEventProcessor(const AppleEvent *, AppleEvent *, long);
+    static OSStatus tabletProximityCallback(EventHandlerCallRef, EventRef, void *);
+    static bool qt_mac_apply_settings();
+#endif
+
+#ifdef Q_WS_QWS
+    QPointer<QWSManager> last_manager;
+# ifndef QT_NO_DIRECTPAINTER
+    QMap<WId, QDirectPainter *> *directPainters;
+# endif
+    QRect maxWindowRect(const QScreen *screen) const { return maxWindowRects[screen]; }
+    void setMaxWindowRect(const QScreen *screen, int screenNo, const QRect &rect);
+    void setScreenTransformation(QScreen *screen, int screenNo, int transformation);
+#endif
+
+    static QApplicationPrivate *instance() { return self; }
+
+    static QString *styleOverride;
+
+    static int app_compile_version;
+
+#ifdef QT_KEYPAD_NAVIGATION
+    static bool keypadNavigation;
+    static QWidget *oldEditFocus;
+#endif
+
+#if defined(Q_WS_MAC) || defined(Q_WS_X11)
+    void _q_alertTimeOut();
+    QHash<QWidget *, QTimer *> alertTimerHash;
+#endif
+#if defined(QT_MAC_USE_COCOA)
+    void _q_runAppModalWindow();
+#endif
+#if defined(QT_MAC_USE_COCOA)
+    void _q_runModalWindow();
+#endif
+#ifndef QT_NO_STYLE_STYLESHEET
+    static QString styleSheet;
+#endif
+    static QPointer<QWidget> leaveAfterRelease;
+    static QWidget *pickMouseReceiver(QWidget *candidate, const QPoint &globalPos, QPoint &pos,
+                                      QEvent::Type type, Qt::MouseButtons buttons,
+                                      QWidget *buttonDown, QWidget *alienWidget);
+    static bool sendMouseEvent(QWidget *receiver, QMouseEvent *event, QWidget *alienWidget,
+                               QWidget *native, QWidget **buttonDown, QPointer<QWidget> &lastMouseReceiver);
+#if defined(Q_WS_WIN) || defined(Q_WS_X11)
+    void sendSyntheticEnterLeave(QWidget *widget);
+#endif
+
+private:
+#ifdef Q_WS_QWS
+    QMap<const QScreen*, QRect> maxWindowRects;
+#endif
+
+    static QApplicationPrivate *self;
+    static bool shouldSetFocus(QWidget *w, Qt::FocusPolicy policy);
+};
+
+QT_END_NAMESPACE
+
+#endif // QAPPLICATION_P_H