qplatformscreen.h - mozsearch

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// Copyright (C) 2016 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

// Qt-Security score:significant reason:default

#ifndef QPLATFORMSCREEN_H

#define QPLATFORMSCREEN_H

//

//  W A R N I N G

//  -------------

//

// This file is part of the QPA API and is not meant to be used

// in applications. Usage of this API may make your code

// source and binary incompatible with future versions of Qt.

//

#include <QtGui/qtguiglobal.h>

#include <QtCore/qmetatype.h>

#include <QtCore/qnamespace.h>

#include <QtCore/qcoreevent.h>

#include <QtCore/qvariant.h>

#include <QtCore/qrect.h>

#include <QtCore/qobject.h>

#include <QtGui/qcolorspace.h>

#include <QtGui/qcursor.h>

#include <QtGui/qimage.h>

#include <QtGui/qwindowdefs.h>

#include <qpa/qplatformpixmap.h>

QT_BEGIN_NAMESPACE

class QPlatformBackingStore;

class QPlatformScreenPrivate;

class QPlatformWindow;

class QPlatformCursor;

class QScreen;

class QSurfaceFormat;

typedef std::pair<qreal, qreal> QDpi;

class Q_GUI_EXPORT QPlatformScreen

    Q_GADGET

    Q_DECLARE_PRIVATE(QPlatformScreen)

public:

    Q_DISABLE_COPY_MOVE(QPlatformScreen)

    enum SubpixelAntialiasingType { // copied from qfontengine_p.h since we can't include private headers

        Subpixel_None,

        Subpixel_RGB,

        Subpixel_BGR,

        Subpixel_VRGB,

        Subpixel_VBGR

};

    enum PowerState {

        PowerStateOn,

        PowerStateStandby,

        PowerStateSuspend,

        PowerStateOff

};

    struct Mode {

        QSize size;

        qreal refreshRate;

};

    QPlatformScreen();

    virtual ~QPlatformScreen();

    virtual bool isPlaceholder() const { return false; }

    virtual QPixmap grabWindow(WId window, int x, int y, int width, int height) const;

    virtual QRect geometry() const = 0;

    virtual QRect availableGeometry() const {return geometry();}

    virtual int depth() const = 0;

    virtual QImage::Format format() const = 0;

    virtual QColorSpace colorSpace() const { return QColorSpace::SRgb; }

    virtual QSizeF physicalSize() const;

    virtual QDpi logicalDpi() const;

    virtual QDpi logicalBaseDpi() const;

    virtual qreal devicePixelRatio() const;

    virtual qreal refreshRate() const;

    virtual Qt::ScreenOrientation nativeOrientation() const;

    virtual Qt::ScreenOrientation orientation() const;

    virtual QWindow *topLevelAt(const QPoint &point) const;

    QWindowList windows() const;

    virtual QList<QPlatformScreen *> virtualSiblings() const;

    const QPlatformScreen *screenForPosition(const QPoint &point) const;

    QScreen *screen() const;

    //jl: should this function be in QPlatformIntegration

    //jl: maybe screenForWindow is a better name?

    static QPlatformScreen *platformScreenForWindow(const QWindow *window);

    virtual QString name() const { return QString(); }

    virtual QString manufacturer() const;

    virtual QString model() const;

    virtual QString serialNumber() const;

    virtual QPlatformCursor *cursor() const;

    virtual SubpixelAntialiasingType subpixelAntialiasingTypeHint() const;

    virtual PowerState powerState() const;

    virtual void setPowerState(PowerState state);

    virtual QList<Mode> modes() const;

    virtual int currentMode() const;

    virtual int preferredMode() const;

    static int angleBetween(Qt::ScreenOrientation a, Qt::ScreenOrientation b);

    static QTransform transformBetween(Qt::ScreenOrientation a, Qt::ScreenOrientation b, const QRect &target);

    static QRect mapBetween(Qt::ScreenOrientation a, Qt::ScreenOrientation b, const QRect &rect);

    static QDpi overrideDpi(const QDpi &in);

protected:

    void resizeMaximizedWindows();

    QScopedPointer<QPlatformScreenPrivate> d_ptr;

private:

    friend class QScreen;

};

// Qt doesn't currently support running with no platform screen

// QPA plugins can use this class to create a fake screen

class Q_GUI_EXPORT QPlatformPlaceholderScreen : public QPlatformScreen {

public:

    // virtualSibling can be passed in to make the placeholder a sibling with other screens during

    // the transitioning phase when the real screen is about to be removed, or the first real screen

    // is about to be added. This is useful because Qt will currently recreate (but now show!)

    // windows when they are moved from one virtual desktop to another, so if the last monitor is

    // unplugged, then plugged in again, windows will be hidden unless the placeholder belongs to

    // the same virtual desktop as the other screens.

    QPlatformPlaceholderScreen(bool virtualSibling = true) : m_virtualSibling(virtualSibling) {}

    bool isPlaceholder() const override { return true; }

    QRect geometry() const override { return QRect(); }

    QRect availableGeometry() const override { return QRect(); }

    int depth() const override { return 32; }

    QImage::Format format() const override { return QImage::Format::Format_RGB32; }

    QList<QPlatformScreen *> virtualSiblings() const override;

private:

    bool m_virtualSibling = true;

};

QT_END_NAMESPACE

#endif // QPLATFORMSCREEN_H