/****************************************************************************

**

** Copyright (C) 2016 The Qt Company Ltd.

** Contact: https://www.qt.io/licensing/

**

** This file is part of the QtGui module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

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** accordance with the commercial license agreement provided with the

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** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 3 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL3 included in the

** packaging of this file. Please review the following information to

** ensure the GNU Lesser General Public License version 3 requirements

** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.

**

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** Alternatively, this file may be used under the terms of the GNU

** General Public License version 2.0 or (at your option) the GNU General

** Public license version 3 or any later version approved by the KDE Free

** Qt Foundation. The licenses are as published by the Free Software

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** included in the packaging of this file. Please review the following

** information to ensure the GNU General Public License requirements will

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****************************************************************************/

#ifndef QGUIAPPLICATION_P_H

#define QGUIAPPLICATION_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtGui/private/qtguiglobal_p.h>

#include <QtGui/qguiapplication.h>

#include <QtCore/QPointF>

#include <QtCore/QSharedPointer>

#include <QtCore/private/qcoreapplication_p.h>

#include <QtCore/private/qthread_p.h>

#include <qpa/qwindowsysteminterface.h>

#include <qpa/qwindowsysteminterface_p.h>

#include "private/qshortcutmap_p.h"

#include <qicon.h>

QT_BEGIN_NAMESPACE

class QColorTrcLut;

class QPlatformIntegration;

class QPlatformTheme;

class QPlatformDragQtResponse;

#if QT_CONFIG(draganddrop)

class QDrag;

#endif // QT_CONFIG(draganddrop)

class QInputDeviceManager;

class Q_GUI_EXPORT QGuiApplicationPrivate : public QCoreApplicationPrivate

{

    Q_DECLARE_PUBLIC(QGuiApplication)

public:

    QGuiApplicationPrivate(int &argc, char **argv, int flags);

    ~QGuiApplicationPrivate();

    void init();

    void createPlatformIntegration();

    void createEventDispatcher() override;

    void eventDispatcherReady() override;

    virtual void notifyLayoutDirectionChange();

    virtual void notifyActiveWindowChange(QWindow *previous);

#if QT_CONFIG(commandlineparser)

    void addQtOptions(QList<QCommandLineOption> *options) override;

#endif

    virtual bool shouldQuit() override;

    bool shouldQuitInternal(const QWindowList &processedWindows);

    virtual bool tryCloseAllWindows();

    static void captureGlobalModifierState(QEvent *e);

    static Qt::KeyboardModifiers modifier_buttons;

    static Qt::MouseButtons mouse_buttons;

    static QPlatformIntegration *platform_integration;

    static QPlatformIntegration *platformIntegration()

    { return platform_integration; }

    static QPlatformTheme *platform_theme;

    static QPlatformTheme *platformTheme()

    { return platform_theme; }

    static QAbstractEventDispatcher *qt_qpa_core_dispatcher()

    {

        if (QCoreApplication::instance())

            return QCoreApplication::instance()->d_func()->threadData.loadRelaxed()->eventDispatcher.loadRelaxed();

        else

            return nullptr;

    }

    static void processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent *e);

    static void processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent *e);

    static void processWheelEvent(QWindowSystemInterfacePrivate::WheelEvent *e);

    static void processTouchEvent(QWindowSystemInterfacePrivate::TouchEvent *e);

    static void processCloseEvent(QWindowSystemInterfacePrivate::CloseEvent *e);

    static void processGeometryChangeEvent(QWindowSystemInterfacePrivate::GeometryChangeEvent *e);

    static void processEnterEvent(QWindowSystemInterfacePrivate::EnterEvent *e);

    static void processLeaveEvent(QWindowSystemInterfacePrivate::LeaveEvent *e);

    static void processActivatedEvent(QWindowSystemInterfacePrivate::ActivatedWindowEvent *e);

    static void processWindowStateChangedEvent(QWindowSystemInterfacePrivate::WindowStateChangedEvent *e);

    static void processWindowScreenChangedEvent(QWindowSystemInterfacePrivate::WindowScreenChangedEvent *e);

    static void processSafeAreaMarginsChangedEvent(QWindowSystemInterfacePrivate::SafeAreaMarginsChangedEvent *e);

    static void processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent *e);

    static void processApplicationTermination(QWindowSystemInterfacePrivate::WindowSystemEvent *e);

    static void updateFilteredScreenOrientation(QScreen *screen);

    static void reportScreenOrientationChange(QScreen *screen);

    static void processScreenOrientationChange(QWindowSystemInterfacePrivate::ScreenOrientationEvent *e);

    static void processScreenGeometryChange(QWindowSystemInterfacePrivate::ScreenGeometryEvent *e);

    static void processScreenLogicalDotsPerInchChange(QWindowSystemInterfacePrivate::ScreenLogicalDotsPerInchEvent *e);

    static void processScreenRefreshRateChange(QWindowSystemInterfacePrivate::ScreenRefreshRateEvent *e);

    static void processThemeChanged(QWindowSystemInterfacePrivate::ThemeChangeEvent *tce);

    static void processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent *e);

    static void processFileOpenEvent(QWindowSystemInterfacePrivate::FileOpenEvent *e);

    static void processTabletEvent(QWindowSystemInterfacePrivate::TabletEvent *e);

    static void processTabletEnterProximityEvent(QWindowSystemInterfacePrivate::TabletEnterProximityEvent *e);

    static void processTabletLeaveProximityEvent(QWindowSystemInterfacePrivate::TabletLeaveProximityEvent *e);

#ifndef QT_NO_GESTURES

    static void processGestureEvent(QWindowSystemInterfacePrivate::GestureEvent *e);

#endif

    static void processPlatformPanelEvent(QWindowSystemInterfacePrivate::PlatformPanelEvent *e);

#ifndef QT_NO_CONTEXTMENU

    static void processContextMenuEvent(QWindowSystemInterfacePrivate::ContextMenuEvent *e);

#endif

#if QT_CONFIG(draganddrop)

    static QPlatformDragQtResponse processDrag(QWindow *w, const QMimeData *dropData,

                                               const QPoint &p, Qt::DropActions supportedActions,

                                               Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers);

    static QPlatformDropQtResponse processDrop(QWindow *w, const QMimeData *dropData,

                                               const QPoint &p, Qt::DropActions supportedActions,

                                               Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers);

#endif

#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)

    static bool processNativeEvent(QWindow *window, const QByteArray &eventType, void *message, qintptr *result);

#else

    static bool processNativeEvent(QWindow *window, const QByteArray &eventType, void *message, long *result);

#endif

    static bool sendQWindowEventToQPlatformWindow(QWindow *window, QEvent *event);

    static inline Qt::Alignment visualAlignment(Qt::LayoutDirection direction, Qt::Alignment alignment)

    {

        if (!(alignment & Qt::AlignHorizontal_Mask))

            alignment |= Qt::AlignLeft;

        if (!(alignment & Qt::AlignAbsolute) && (alignment & (Qt::AlignLeft | Qt::AlignRight))) {

            if (direction == Qt::RightToLeft)

                alignment ^= (Qt::AlignLeft | Qt::AlignRight);

            alignment |= Qt::AlignAbsolute;

        }

        return alignment;

    }

    static void emitLastWindowClosed();

    QPixmap getPixmapCursor(Qt::CursorShape cshape);

    void _q_updateFocusObject(QObject *object);

    static QGuiApplicationPrivate *instance() { return self; }

    static QIcon *app_icon;

    static QString *platform_name;

    static QString *displayName;

    static QString *desktopFileName;

    QWindowList modalWindowList;

    static void showModalWindow(QWindow *window);

    static void hideModalWindow(QWindow *window);

    static void updateBlockedStatus(QWindow *window);

    virtual bool isWindowBlocked(QWindow *window, QWindow **blockingWindow = nullptr) const;

    virtual bool popupActive() { return false; }

    static ulong mousePressTime;

    static Qt::MouseButton mousePressButton;

    static int mousePressX;

    static int mousePressY;

    static QPointF lastCursorPosition;

    static QWindow *currentMouseWindow;

    static QWindow *currentMousePressWindow;

    static Qt::ApplicationState applicationState;

    static Qt::HighDpiScaleFactorRoundingPolicy highDpiScaleFactorRoundingPolicy;

    static bool highDpiScalingUpdated;

    static QPointer<QWindow> currentDragWindow;

    struct TabletPointData {

        TabletPointData(qint64 devId = 0) : deviceId(devId), state(Qt::NoButton), target(nullptr) {}

        qint64 deviceId;

        Qt::MouseButtons state;

        QWindow *target;

    };

    static QVector<TabletPointData> tabletDevicePoints;

    static TabletPointData &tabletDevicePoint(qint64 deviceId);

#ifndef QT_NO_CLIPBOARD

    static QClipboard *qt_clipboard;

#endif

    static QPalette *app_pal;

    static QWindowList window_list;

    static QWindow *focus_window;

#ifndef QT_NO_CURSOR

    QList<QCursor> cursor_list;

#endif

    static QList<QScreen *> screen_list;

    static QFont *app_font;

    static QString styleOverride;

    static QStyleHints *styleHints;

    static bool obey_desktop_settings;

    QInputMethod *inputMethod;

    QString firstWindowTitle;

    QIcon forcedWindowIcon;

    static QList<QObject *> generic_plugin_list;

#ifndef QT_NO_SHORTCUT

    QShortcutMap shortcutMap;

#endif

#ifndef QT_NO_SESSIONMANAGER

    static bool is_fallback_session_management_enabled;

    QSessionManager *session_manager;

    bool is_session_restored;

    bool is_saving_session;

    void commitData();

    void saveState();

#endif

    struct ActiveTouchPointsKey {

        ActiveTouchPointsKey(QTouchDevice *dev, int id) : device(dev), touchPointId(id) { }

        QTouchDevice *device;

        int touchPointId;

    };

    struct ActiveTouchPointsValue {

        QPointer<QWindow> window;

        QPointer<QObject> target;

        QTouchEvent::TouchPoint touchPoint;

    };

    QHash<ActiveTouchPointsKey, ActiveTouchPointsValue> activeTouchPoints;

    QEvent::Type lastTouchType;

    struct SynthesizedMouseData {

        SynthesizedMouseData(const QPointF &p, const QPointF &sp, QWindow *w)

            : pos(p), screenPos(sp), window(w) { }

        QPointF pos;

        QPointF screenPos;

        QPointer<QWindow> window;

    };

    QHash<QWindow *, SynthesizedMouseData> synthesizedMousePoints;

    static int mouseEventCaps(QMouseEvent *event);

    static QVector2D mouseEventVelocity(QMouseEvent *event);

    static void setMouseEventCapsAndVelocity(QMouseEvent *event, int caps, const QVector2D &velocity);

    static Qt::MouseEventSource mouseEventSource(const QMouseEvent *event);

    static void setMouseEventSource(QMouseEvent *event, Qt::MouseEventSource source);

    static Qt::MouseEventFlags mouseEventFlags(const QMouseEvent *event);

    static void setMouseEventFlags(QMouseEvent *event, Qt::MouseEventFlags flags);

    static QInputDeviceManager *inputDeviceManager();

    const QColorTrcLut *colorProfileForA8Text();

    const QColorTrcLut *colorProfileForA32Text();

    // hook reimplemented in QApplication to apply the QStyle function on the QIcon

    virtual QPixmap applyQIconStyleHelper(QIcon::Mode, const QPixmap &basePixmap) const { return basePixmap; }

    virtual void notifyWindowIconChanged();

    static void applyWindowGeometrySpecificationTo(QWindow *window);

    static void setApplicationState(Qt::ApplicationState state, bool forcePropagate = false);

    static void resetCachedDevicePixelRatio();

    static void updatePalette();

protected:

    virtual void notifyThemeChanged();

    static bool setPalette(const QPalette &palette);

    virtual QPalette basePalette() const;

    virtual void handlePaletteChanged(const char *className = nullptr);

    bool tryCloseRemainingWindows(QWindowList processedWindows);

#if QT_CONFIG(draganddrop)

    virtual void notifyDragStarted(const QDrag *);

#endif // QT_CONFIG(draganddrop)

private:

    static void clearPalette();

    friend class QDragManager;

    static QGuiApplicationPrivate *self;

    static QTouchDevice *m_fakeTouchDevice;

    static int m_fakeMouseSourcePointId;

    QSharedPointer<QColorTrcLut> m_a8ColorProfile;

    QSharedPointer<QColorTrcLut> m_a32ColorProfile;

    bool ownGlobalShareContext;

    static QInputDeviceManager *m_inputDeviceManager;

    // Cache the maximum device pixel ratio, to iterate through the screen list

    // only the first time it's required, or when devices are added or removed.

    static qreal m_maxDevicePixelRatio;

};

Q_GUI_EXPORT uint qHash(const QGuiApplicationPrivate::ActiveTouchPointsKey &k);

Q_GUI_EXPORT bool operator==(const QGuiApplicationPrivate::ActiveTouchPointsKey &a,

                             const QGuiApplicationPrivate::ActiveTouchPointsKey &b);

QT_END_NAMESPACE

#endif // QGUIAPPLICATION_P_H