kwin/src/screens.h
2022-01-25 17:56:40 +00:00

142 lines
3 KiB
C++

/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2013 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef KWIN_SCREENS_H
#define KWIN_SCREENS_H
// KWin includes
#include <kwinglobals.h>
// KDE includes
#include <KConfig>
#include <KSharedConfig>
// Qt includes
#include <QObject>
#include <QRect>
#include <QTimer>
#include <QVector>
namespace KWin
{
class AbstractClient;
class AbstractOutput;
class Platform;
class KWIN_EXPORT Screens : public QObject
{
Q_OBJECT
Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged)
public:
~Screens() override;
int count() const;
QRect geometry(int screen) const;
/**
* The bounding geometry of all screens combined. Overlapping areas
* are not counted multiple times.
* @see geometryChanged()
*/
QRect geometry() const;
/**
* The highest scale() of all connected screens
* for use when deciding what scale to load global assets at
* Similar to QGuiApplication::scale
* @see scale
*/
qreal maxScale() const;
/**
* The output scale for this display, for use by high DPI displays
*/
qreal scale(int screen) const;
/**
* The bounding size of all screens combined. Overlapping areas
* are not counted multiple times.
*
* @see geometry()
* @see sizeChanged()
*/
QSize size() const;
int number(const QPoint &pos) const;
Q_SIGNALS:
void countChanged(int previousCount, int newCount);
/**
* Emitted whenever the screens are changed either count or geometry.
*/
void changed();
/**
* Emitted when the geometry of all screens combined changes.
* Not emitted when the geometry of an individual screen changes.
* @see geometry()
*/
void geometryChanged();
/**
* Emitted when the size of all screens combined changes.
* Not emitted when the size of an individual screen changes.
* @see size()
*/
void sizeChanged();
/**
* Emitted when the maximum scale of all attached screens changes
* @see maxScale
*/
void maxScaleChanged();
protected Q_SLOTS:
void setCount(int count);
void updateCount();
protected:
/**
* Called once the singleton instance has been created.
* Any initialization code should go into this method. Overriding classes have to call
* the base implementation first.
*/
void init();
private Q_SLOTS:
void updateSize();
private:
AbstractOutput *findOutput(int screenId) const;
int m_count;
QSize m_boundingSize;
qreal m_maxScale;
KWIN_SINGLETON(Screens)
};
inline
int Screens::count() const
{
return m_count;
}
inline
QSize Screens::size() const
{
return m_boundingSize;
}
inline
QRect Screens::geometry() const
{
return QRect(QPoint(0,0), size());
}
inline
Screens *screens()
{
return Screens::self();
}
}
#endif // KWIN_SCREENS_H