/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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** This file is part of the QtGui module of the Qt Toolkit.
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** License version 2.0 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 GNU
** General Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/
**
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** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
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** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.0, which can be found at
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** Trolltech ASA (c) 2007
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/

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

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 mouseEvent(QEvent *event);
    bool handleWinEvent(MSG *message, long *result);
    void resizeEvent(QResizeEvent *event);
    void paintEvent(QPaintEvent *event);
    QVistaBackButton *backButton() const { return backButton_; }
    void setWindowPosHack();
    static bool isCompositionEnabled();
    static bool isVista();

    static int titleBarSize() { return frameSize() + captionSize(); }

    static int topPadding() { return 8; } // standard Aero (?)

    static int topOffset() { return titleBarSize() + 13; } // standard Aero

private:
    static HFONT getCaptionFont(HANDLE hTheme);
    static bool drawTitleText(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;
    enum Changes { resizeTop, movePosition, noChange } change;
    QPoint pressedPos;
    bool pressed;
    QRect rtTop;
    QRect rtTitle;
    QWizard *wizard;
    QVistaBackButton *backButton_;
};

#endif // QT_NO_STYLE_WINDOWSXP
#endif // QT_NO_WIZARD

#endif // QWIZARD_WIN_P_H
