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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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

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** $QT_BEGIN_LICENSE:LGPL$

** 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 Technology Preview License Agreement accompanying

** this package.

**

** 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

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**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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

#ifndef QEVENT_H

#define QEVENT_H

#include <QtGui/qwindowdefs.h>

#include <QtCore/qobject.h>

#include <QtGui/qregion.h>

#include <QtCore/qnamespace.h>

#include <QtCore/qstring.h>

#include <QtGui/qkeysequence.h>

#include <QtCore/qcoreevent.h>

#include <QtGui/qmime.h>

#include <QtGui/qdrag.h>

#include <QtCore/qvariant.h>

#include <QtCore/qmap.h>

#include <QtCore/qset.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QAction;

class QGesture;

class Q_GUI_EXPORT QInputEvent : public QEvent

{

public:

    QInputEvent(Type type, Qt::KeyboardModifiers modifiers = Qt::NoModifier);

    ~QInputEvent();

    inline Qt::KeyboardModifiers modifiers() const { return modState; }

    inline void setModifiers(Qt::KeyboardModifiers amodifiers) { modState = amodifiers; }

protected:

    Qt::KeyboardModifiers modState;

};

class Q_GUI_EXPORT QMouseEvent : public QInputEvent

{

public:

    QMouseEvent(Type type, const QPoint &pos, Qt::MouseButton button,

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

    QMouseEvent(Type type, const QPoint &pos, const QPoint &globalPos,

                Qt::MouseButton button, Qt::MouseButtons buttons,

                Qt::KeyboardModifiers modifiers);

    ~QMouseEvent();

    inline const QPoint &pos() const { return p; }

    inline const QPoint &globalPos() const { return g; }

    inline int x() const { return p.x(); }

    inline int y() const { return p.y(); }

    inline int globalX() const { return g.x(); }

    inline int globalY() const { return g.y(); }

    inline Qt::MouseButton button() const { return b; }

    inline Qt::MouseButtons buttons() const { return mouseState; }

    static QMouseEvent *createExtendedMouseEvent(Type type, const QPointF &pos,

                                                 const QPoint &globalPos, Qt::MouseButton button,

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

    inline bool hasExtendedInfo() const { return reinterpret_cast<const QMouseEvent *>(d) == this; }

    QPointF posF() const;

#ifdef QT3_SUPPORT

    QT3_SUPPORT_CONSTRUCTOR QMouseEvent(Type type, const QPoint &pos, Qt::ButtonState button, int state);

    QT3_SUPPORT_CONSTRUCTOR QMouseEvent(Type type, const QPoint &pos, const QPoint &globalPos,

                                      Qt::ButtonState button, int state);

    inline QT3_SUPPORT Qt::ButtonState state() const

    { return Qt::ButtonState((mouseState^b)|int(modifiers())); }

    inline QT3_SUPPORT Qt::ButtonState stateAfter() const

    { return Qt::ButtonState(int(mouseState)|int(modifiers())); }

#endif

protected:

    QPoint p, g;

    Qt::MouseButton b;

    Qt::MouseButtons mouseState;

};

class Q_GUI_EXPORT QHoverEvent : public QEvent

{

public:

    QHoverEvent(Type type, const QPoint &pos, const QPoint &oldPos);

    ~QHoverEvent();

    inline const QPoint &pos() const { return p; }

    inline const QPoint &oldPos() const { return op; }

protected:

    QPoint p, op;

};

#ifndef QT_NO_WHEELEVENT

class Q_GUI_EXPORT QWheelEvent : public QInputEvent

{

public:

    QWheelEvent(const QPoint &pos, int delta,

                Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers,

                Qt::Orientation orient = Qt::Vertical);

    QWheelEvent(const QPoint &pos, const QPoint& globalPos, int delta,

                Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers,

                Qt::Orientation orient = Qt::Vertical);

    ~QWheelEvent();

    inline int delta() const { return d; }

    inline const QPoint &pos() const { return p; }

    inline const QPoint &globalPos()   const { return g; }

    inline int x() const { return p.x(); }

    inline int y() const { return p.y(); }

    inline int globalX() const { return g.x(); }

    inline int globalY() const { return g.y(); }

    inline Qt::MouseButtons buttons() const { return mouseState; }

    Qt::Orientation orientation() const { return o; }

#ifdef QT3_SUPPORT

    QT3_SUPPORT_CONSTRUCTOR QWheelEvent(const QPoint &pos, int delta, int state,

                                      Qt::Orientation orient = Qt::Vertical);

    QT3_SUPPORT_CONSTRUCTOR QWheelEvent(const QPoint &pos, const QPoint& globalPos, int delta, int state,

                                      Qt::Orientation orient = Qt::Vertical);

    inline QT3_SUPPORT Qt::ButtonState state() const

    { return static_cast<Qt::ButtonState>(int(buttons())|int(modifiers())); }

#endif

protected:

    QPoint p;

    QPoint g;

    int d;

    Qt::MouseButtons mouseState;

    Qt::Orientation o;

};

#endif

#ifndef QT_NO_TABLETEVENT

class Q_GUI_EXPORT QTabletEvent : public QInputEvent

{

public:

    enum TabletDevice { NoDevice, Puck, Stylus, Airbrush, FourDMouse,

                        XFreeEraser /*internal*/, RotationStylus };

    enum PointerType { UnknownPointer, Pen, Cursor, Eraser };

    QTabletEvent(Type t, const QPoint &pos, const QPoint &globalPos, const QPointF &hiResGlobalPos,

                 int device, int pointerType, qreal pressure, int xTilt, int yTilt,

                 qreal tangentialPressure, qreal rotation, int z,

                 Qt::KeyboardModifiers keyState, qint64 uniqueID);

    ~QTabletEvent();

    inline const QPoint &pos() const { return mPos; }

    inline const QPoint &globalPos() const { return mGPos; }

    inline const QPointF &hiResGlobalPos() const { return mHiResGlobalPos; }

    inline int x() const { return mPos.x(); }

    inline int y() const { return mPos.y(); }

    inline int globalX() const { return mGPos.x(); }

    inline int globalY() const { return mGPos.y(); }

    inline qreal hiResGlobalX() const { return mHiResGlobalPos.x(); }

    inline qreal hiResGlobalY() const { return mHiResGlobalPos.y(); }

    inline TabletDevice device() const { return TabletDevice(mDev); }

    inline PointerType pointerType() const { return PointerType(mPointerType); }

    inline qint64 uniqueId() const { return mUnique; }

    inline qreal pressure() const { return mPress; }

    inline int z() const { return mZ; }

    inline qreal tangentialPressure() const { return mTangential; }

    inline qreal rotation() const { return mRot; }

    inline int xTilt() const { return mXT; }

    inline int yTilt() const { return mYT; }

protected:

    QPoint mPos, mGPos;

    QPointF mHiResGlobalPos;

    int mDev, mPointerType, mXT, mYT, mZ;

    qreal mPress, mTangential, mRot;

    qint64 mUnique;

    // I don't know what the future holds for tablets but there could be some

    // new devices coming along, and there seem to be "holes" in the

    // OS-specific events for this.

    void *mExtra;

};

#endif // QT_NO_TABLETEVENT

class Q_GUI_EXPORT QKeyEvent : public QInputEvent

{

public:

    QKeyEvent(Type type, int key, Qt::KeyboardModifiers modifiers, const QString& text = QString(),

              bool autorep = false, ushort count = 1);

    ~QKeyEvent();

    int key() const { return k; }

#ifndef QT_NO_SHORTCUT

    bool matches(QKeySequence::StandardKey key) const;

#endif

    Qt::KeyboardModifiers modifiers() const;

    inline QString text() const { return txt; }

    inline bool isAutoRepeat() const { return autor; }

    inline int count() const { return int(c); }

    // Functions for the extended key event information

    static QKeyEvent *createExtendedKeyEvent(Type type, int key, Qt::KeyboardModifiers modifiers,

                                             quint32 nativeScanCode, quint32 nativeVirtualKey,

                                             quint32 nativeModifiers,

                                             const QString& text = QString(), bool autorep = false,

                                             ushort count = 1);

    inline bool hasExtendedInfo() const { return reinterpret_cast<const QKeyEvent*>(d) == this; }

    quint32 nativeScanCode() const;

    quint32 nativeVirtualKey() const;

    quint32 nativeModifiers() const;

#ifdef QT3_SUPPORT

    inline QT3_SUPPORT_CONSTRUCTOR QKeyEvent(Type type, int key, int /*ascii*/,

                                           int modifiers, const QString& text = QString(),

                                           bool autorep = false, ushort count = 1)

        : QInputEvent(type, Qt::KeyboardModifiers(modifiers & (int)Qt::KeyButtonMask)), txt(text), k(key),

          c(count), autor(autorep)

    {

        if (key >= Qt::Key_Back && key <= Qt::Key_MediaLast)

            ignore();

    }

    inline QT3_SUPPORT int ascii() const

    { return (txt.length() ? txt.unicode()->toLatin1() : 0); }

    inline QT3_SUPPORT Qt::ButtonState state() const { return Qt::ButtonState(QInputEvent::modifiers()); }

    inline QT3_SUPPORT Qt::ButtonState stateAfter() const { return Qt::ButtonState(modifiers()); }

#endif

protected:

    QString txt;

    int k;

    ushort c;

    uint autor:1;

};

class Q_GUI_EXPORT QFocusEvent : public QEvent

{

public:

    QFocusEvent(Type type, Qt::FocusReason reason=Qt::OtherFocusReason);

    ~QFocusEvent();

    inline bool gotFocus() const { return type() == FocusIn; }

    inline bool lostFocus() const { return type() == FocusOut; }

#ifdef QT3_SUPPORT

    enum Reason { Mouse=Qt::MouseFocusReason, Tab=Qt::TabFocusReason,

                  Backtab=Qt::BacktabFocusReason, MenuBar=Qt::MenuBarFocusReason,

                  ActiveWindow=Qt::ActiveWindowFocusReason, Other=Qt::OtherFocusReason,

                  Popup=Qt::PopupFocusReason, Shortcut=Qt::ShortcutFocusReason };

#endif

    Qt::FocusReason reason();

    Qt::FocusReason reason() const;

private:

    Qt::FocusReason m_reason;

};

class Q_GUI_EXPORT QPaintEvent : public QEvent

{

public:

    QPaintEvent(const QRegion& paintRegion);

    QPaintEvent(const QRect &paintRect);

    ~QPaintEvent();

    inline const QRect &rect() const { return m_rect; }

    inline const QRegion &region() const { return m_region; }

#ifdef QT3_SUPPORT

    QT3_SUPPORT_CONSTRUCTOR QPaintEvent(const QRegion &paintRegion, const QRect &paintRect);

    inline QT3_SUPPORT bool erased() const { return m_erased; }

    inline QT3_SUPPORT void setErased(bool b) { m_erased = b; }

#endif

protected:

    friend class QApplication;

    friend class QCoreApplication;

    QRect m_rect;

    QRegion m_region;

    bool m_erased;

};

class QUpdateLaterEvent : public QEvent

{

public:

    QUpdateLaterEvent(const QRegion& paintRegion);

    ~QUpdateLaterEvent();

    inline const QRegion &region() const { return m_region; }

protected:

    QRegion m_region;

};

class Q_GUI_EXPORT QMoveEvent : public QEvent

{

public:

    QMoveEvent(const QPoint &pos, const QPoint &oldPos);

    ~QMoveEvent();

    inline const QPoint &pos() const { return p; }

    inline const QPoint &oldPos() const { return oldp;}

protected:

    QPoint p, oldp;

    friend class QApplication;

    friend class QCoreApplication;

};

class Q_GUI_EXPORT QResizeEvent : public QEvent

{

public:

    QResizeEvent(const QSize &size, const QSize &oldSize);

    ~QResizeEvent();

    inline const QSize &size() const { return s; }

    inline const QSize &oldSize()const { return olds;}

protected:

    QSize s, olds;

    friend class QApplication;

    friend class QCoreApplication;

};

class Q_GUI_EXPORT QCloseEvent : public QEvent

{

public:

    QCloseEvent();

    ~QCloseEvent();

};

class Q_GUI_EXPORT QIconDragEvent : public QEvent

{

public:

    QIconDragEvent();

    ~QIconDragEvent();

};

class Q_GUI_EXPORT QShowEvent : public QEvent

{

public:

    QShowEvent();

    ~QShowEvent();

};

class Q_GUI_EXPORT QHideEvent : public QEvent

{

public:

    QHideEvent();

    ~QHideEvent();

};

#ifndef QT_NO_CONTEXTMENU

class Q_GUI_EXPORT QContextMenuEvent : public QInputEvent

{

public:

    enum Reason { Mouse, Keyboard, Other };

    QContextMenuEvent(Reason reason, const QPoint &pos, const QPoint &globalPos,

                      Qt::KeyboardModifiers modifiers);

    QContextMenuEvent(Reason reason, const QPoint &pos, const QPoint &globalPos);

    QContextMenuEvent(Reason reason, const QPoint &pos);

    ~QContextMenuEvent();

    inline int x() const { return p.x(); }

    inline int y() const { return p.y(); }

    inline int globalX() const { return gp.x(); }

    inline int globalY() const { return gp.y(); }

    inline const QPoint& pos() const { return p; }

    inline const QPoint& globalPos() const { return gp; }

    inline Reason reason() const { return Reason(reas); }

#ifdef QT3_SUPPORT

    QT3_SUPPORT_CONSTRUCTOR QContextMenuEvent(Reason reason, const QPoint &pos, const QPoint &globalPos, int);

    QT3_SUPPORT_CONSTRUCTOR QContextMenuEvent(Reason reason, const QPoint &pos, int);

    QT3_SUPPORT Qt::ButtonState state() const;

#endif

protected:

    QPoint p;

    QPoint gp;

    uint reas : 8;

};

#endif // QT_NO_CONTEXTMENU

#ifndef QT_NO_INPUTMETHOD

class Q_GUI_EXPORT QInputMethodEvent : public QEvent

{

public:

    enum AttributeType {

       TextFormat,

       Cursor,

       Language,

       Ruby,

       Selection

    };

    class Attribute {

    public:

        Attribute(AttributeType t, int s, int l, QVariant val) : type(t), start(s), length(l), value(val) {}

        AttributeType type;

        int start;

        int length;

        QVariant value;

    };

    QInputMethodEvent();

    QInputMethodEvent(const QString &preeditText, const QList<Attribute> &attributes);

    void setCommitString(const QString &commitString, int replaceFrom = 0, int replaceLength = 0);

    inline const QList<Attribute> &attributes() const { return attrs; }

    inline const QString &preeditString() const { return preedit; }

    inline const QString &commitString() const { return commit; }

    inline int replacementStart() const { return replace_from; }

    inline int replacementLength() const { return replace_length; }

    QInputMethodEvent(const QInputMethodEvent &other);

private:

    QString preedit;

    QList<Attribute> attrs;

    QString commit;

    int replace_from;

    int replace_length;

};

#endif // QT_NO_INPUTMETHOD

#ifndef QT_NO_DRAGANDDROP

class QMimeData;

class Q_GUI_EXPORT QDropEvent : public QEvent

// QT3_SUPPORT

                              , public QMimeSource

// END QT3_SUPPORT

{

public:

    QDropEvent(const QPoint& pos, Qt::DropActions actions, const QMimeData *data,

               Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, Type type = Drop);

    ~QDropEvent();

    inline const QPoint &pos() const { return p; }

    inline Qt::MouseButtons mouseButtons() const { return mouseState; }

    inline Qt::KeyboardModifiers keyboardModifiers() const { return modState; }

    inline Qt::DropActions possibleActions() const { return act; }

    inline Qt::DropAction proposedAction() const { return default_action; }

    inline void acceptProposedAction() { drop_action = default_action; accept(); }

    inline Qt::DropAction dropAction() const { return drop_action; }

    void setDropAction(Qt::DropAction action);

    QWidget* source() const;

    inline const QMimeData *mimeData() const { return mdata; }

// QT3_SUPPORT

    const char* format(int n = 0) const;

    QByteArray encodedData(const char*) const;

    bool provides(const char*) const;

// END QT3_SUPPORT

#ifdef QT3_SUPPORT

    inline void accept() { QEvent::accept(); }

    inline QT3_SUPPORT void accept(bool y) { setAccepted(y); }

    inline QT3_SUPPORT QByteArray data(const char* f) const { return encodedData(f); }

    enum Action { Copy, Link, Move, Private, UserAction = Private };

    QT3_SUPPORT Action action() const;

    inline QT3_SUPPORT void acceptAction(bool y = true)  { if (y) { drop_action = default_action; accept(); } }

    inline QT3_SUPPORT void setPoint(const QPoint& np) { p = np; }

#endif

protected:

    friend class QApplication;

    QPoint p;

    Qt::MouseButtons mouseState;

    Qt::KeyboardModifiers modState;

    Qt::DropActions act;

    Qt::DropAction drop_action;

    Qt::DropAction default_action;

    const QMimeData *mdata;

    mutable QList<QByteArray> fmts; // only used for QT3_SUPPORT

};

class Q_GUI_EXPORT QDragMoveEvent : public QDropEvent

{

public:

    QDragMoveEvent(const QPoint &pos, Qt::DropActions actions, const QMimeData *data,

                   Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, Type type = DragMove);

    ~QDragMoveEvent();