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

**

** 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

** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3

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

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

** be met: https://www.gnu.org/licenses/gpl-2.0.html and

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

#ifndef QWINDOW_P_H

#define QWINDOW_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/qscreen.h>

#include <QtGui/qwindow.h>

#include <qpa/qplatformwindow.h>

#include <QtCore/private/qobject_p.h>

#include <QtCore/qelapsedtimer.h>

#include <QtGui/QIcon>

QT_BEGIN_NAMESPACE

#define QWINDOWSIZE_MAX ((1<<24)-1)

class Q_GUI_EXPORT QWindowPrivate : public QObjectPrivate

{

    Q_DECLARE_PUBLIC(QWindow)

public:

    enum PositionPolicy

    {

        WindowFrameInclusive,

        WindowFrameExclusive

    };

    QWindowPrivate()

        : QObjectPrivate()

    {

        isWindow = true;

    }

    void init(QScreen *targetScreen = nullptr);

    void maybeQuitOnLastWindowClosed();

#ifndef QT_NO_CURSOR

    void setCursor(const QCursor *c = nullptr);

    bool applyCursor();

#endif

    QPoint globalPosition() const;

    QWindow *topLevelWindow(QWindow::AncestorMode mode = QWindow::IncludeTransients) const;

#if QT_CONFIG(opengl)

    virtual QOpenGLContext *shareContext() const;

#endif

    virtual QWindow *eventReceiver() { Q_Q(QWindow); return q; }

    virtual void setVisible(bool visible);

    void updateVisibility();

    void _q_clearAlert();

    enum SiblingPosition { PositionTop, PositionBottom };

    void updateSiblingPosition(SiblingPosition);

    bool windowRecreationRequired(QScreen *newScreen) const;

    void create(bool recursive, WId nativeHandle = 0);

    void destroy();

    void setTopLevelScreen(QScreen *newScreen, bool recreate);

    void connectToScreen(QScreen *topLevelScreen);

    void disconnectFromScreen();

    void emitScreenChangedRecursion(QScreen *newScreen);

    QScreen *screenForGeometry(const QRect &rect) const;

    void setTransientParent(QWindow *parent);

    virtual void clearFocusObject();

    virtual QRectF closestAcceptableGeometry(const QRectF &rect) const;

    virtual void processSafeAreaMarginsChanged() {};

    bool isPopup() const { return (windowFlags & Qt::WindowType_Mask) == Qt::Popup; }

    void setAutomaticPositionAndResizeEnabled(bool a)

    { positionAutomatic = resizeAutomatic = a; }

    static QWindowPrivate *get(QWindow *window) { return window->d_func(); }

    static Qt::WindowState effectiveState(Qt::WindowStates);

    // ### Qt6: unused

    virtual bool allowClickThrough(const QPoint &) const { return true; }

    QWindow::SurfaceType surfaceType = QWindow::RasterSurface;

    Qt::WindowFlags windowFlags = Qt::Window;

    QWindow *parentWindow = nullptr;

    QPlatformWindow *platformWindow = nullptr;

    bool visible= false;

    bool visibilityOnDestroy = false;

    bool exposed = false;

    QSurfaceFormat requestedFormat;

    QString windowTitle;

    QString windowFilePath;

    QIcon windowIcon;

    QRect geometry;

    Qt::WindowStates windowState = Qt::WindowNoState;

    QWindow::Visibility visibility = QWindow::Hidden;

    bool resizeEventPending = true;

    bool receivedExpose = false;

    PositionPolicy positionPolicy = WindowFrameExclusive;

    bool positionAutomatic = true;

    // resizeAutomatic suppresses resizing by QPlatformWindow::initialGeometry().

    // It also indicates that width/height=0 is acceptable (for example, for

    // the QRollEffect widget) and is thus not cleared in setGeometry().

    // An alternative approach might be using -1,-1 as a default size.

    bool resizeAutomatic = true;

    Qt::ScreenOrientation contentOrientation = Qt::PrimaryOrientation;

    qreal opacity= 1;

    QRegion mask;

    QSize minimumSize = {0, 0};

    QSize maximumSize = {QWINDOWSIZE_MAX, QWINDOWSIZE_MAX};

    QSize baseSize;

    QSize sizeIncrement;

    Qt::WindowModality modality = Qt::NonModal;

    bool blockedByModalWindow = false;

    bool updateRequestPending = false;

    bool transientParentPropertySet = false;

    QPointer<QWindow> transientParent;

    QPointer<QScreen> topLevelScreen;

#ifndef QT_NO_CURSOR

    QCursor cursor = {Qt::ArrowCursor};

    bool hasCursor = false;

#endif

    bool compositing = false;

    QElapsedTimer lastComposeTime;

#if QT_CONFIG(vulkan)

    QVulkanInstance *vulkanInstance = nullptr;

#endif

};

QT_END_NAMESPACE

#endif // QWINDOW_P_H