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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 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
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QWIZARD_WIN_P_H
#define QWIZARD_WIN_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.
//

#ifndef QT_NO_WIZARD
#ifndef QT_NO_STYLE_WINDOWSVISTA

#include <qt_windows.h>
#include <qobject.h>
#include <qwidget.h>
#include <qabstractbutton.h>
#include <QtGui/private/qwidget_p.h>

QT_BEGIN_NAMESPACE

class QVistaBackButton : public QAbstractButton
{
public:
    QVistaBackButton(QWidget *widget);

    QSize sizeHint() const;
    inline QSize minimumSizeHint() const
    { return sizeHint(); }

    void enterEvent(QEvent *event);
    void leaveEvent(QEvent *event);
    void paintEvent(QPaintEvent *event);
};

class QWizard;

class QVistaHelper : public QObject
{
    Q_OBJECT
public:
    QVistaHelper(QWizard *wizard);
    ~QVistaHelper();
    enum TitleBarChangeType { NormalTitleBar, ExtendedTitleBar };
    bool setDWMTitleBar(TitleBarChangeType type);
    void setTitleBarIconAndCaptionVisible(bool visible);
    void mouseEvent(QEvent *event);
    bool handleWinEvent(MSG *message, long *result);
    void resizeEvent(QResizeEvent *event);
    void paintEvent(QPaintEvent *event);
    QVistaBackButton *backButton() const { return backButton_; }
    void disconnectBackButton() { if (backButton_) backButton_->disconnect(); }
    void hideBackButton() { if (backButton_) backButton_->hide(); }
    void setWindowPosHack();
    QColor basicWindowFrameColor();
    enum VistaState { VistaAero, VistaBasic, Classic, Dirty };
    static VistaState vistaState();
    static int titleBarSize() { return frameSize() + captionSize(); }
    static int topPadding() { return 8; }
    static int topOffset() { return titleBarSize() + (vistaState() == VistaAero ? 13 : 3); }

private:
    static HFONT getCaptionFont(HANDLE hTheme);
    bool drawTitleText(QPainter *painter, const QString &text, const QRect &rect, HDC hdc);
    static bool drawBlackRect(const QRect &rect, HDC hdc);

    static int frameSize() { return GetSystemMetrics(SM_CYSIZEFRAME); }
    static int captionSize() { return GetSystemMetrics(SM_CYCAPTION); }

    static int backButtonSize() { return 31; } // ### should be queried from back button itself
    static int iconSize() { return 16; } // Standard Aero
    static int padding() { return 7; } // Standard Aero
    static int leftMargin() { return backButtonSize() + padding(); }
    static int glowSize() { return 10; }

    int titleOffset();
    bool resolveSymbols();
    void drawTitleBar(QPainter *painter);
    void setMouseCursor(QPoint pos);
    void collapseTopFrameStrut();
    bool winEvent(MSG *message, long *result);
    void mouseMoveEvent(QMouseEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
    bool eventFilter(QObject *obj, QEvent *event);

    static bool is_vista;
    static VistaState cachedVistaState;
    static bool isCompositionEnabled();
    static bool isThemeActive();
    enum Changes { resizeTop, movePosition, noChange } change;
    QPoint pressedPos;
    bool pressed;
    QRect rtTop;
    QRect rtTitle;
    QWizard *wizard;
    QVistaBackButton *backButton_;
};


QT_END_NAMESPACE

#endif // QT_NO_STYLE_WINDOWSVISTA
#endif // QT_NO_WIZARD
#endif // QWIZARD_WIN_P_H