qqmlpreviewposition.h

Go to the documentation of this file.

// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQMLPREVIEWPOSITION_H
#define QQMLPREVIEWPOSITION_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 <QtCore/qvector.h>
#include <QtCore/qpoint.h>
#include <QtCore/qurl.h>
#include <QtCore/qtimer.h>
#include <QtCore/qsettings.h>
#include <QtCore/qrect.h>
#include <QtCore/qdatastream.h>
 
QT_BEGIN_NAMESPACE
 
class QWindow;
 
class QQmlPreviewPosition
{
public:
    class ScreenData {
    public:
        bool operator==(const QQmlPreviewPosition::ScreenData &other) const;
        QString name;
        QRect rect;
    };
    class Position {
    public:
        QString screenName;
        QPoint nativePosition;
        QSize size;
    };
    enum InitializeState {
        InitializePosition,
        PositionInitialized
    };
 
    QQmlPreviewPosition();
    ~QQmlPreviewPosition();
 
 
    void takePosition(QWindow *window, InitializeState state = PositionInitialized);
    void initLastSavedWindowPosition(QWindow *window);
    void loadWindowPositionSettings(const QUrl &url);
 
private:
    void setPosition(const QQmlPreviewPosition::Position &position, QWindow *window);
    QByteArray fromPositionToByteArray(const Position &position);
    void readLastPositionFromByteArray(const QByteArray &array);
    void saveWindowPosition();
 
    bool m_hasPosition = false;
    InitializeState m_initializeState = InitializePosition;
    QSettings m_settings;
    QString m_settingsKey;
    QTimer m_savePositionTimer;
    Position m_lastWindowPosition;
    QVector<QWindow *> m_positionedWindows;
 
    QVector<ScreenData> m_currentInitScreensData;
};
 
QT_END_NAMESPACE
 
#endif // QQMLPREVIEWPOSITION_H