kwin/screens.h
Vlad Zahorodnii 6adfe3064f Drop Platform::createScreens()
Since the Screens class is a convenience wrapper around AbstractOutput
objects that come from the Platform, it should not be platform-specific.

By dropping createScreens(), output-related code becomes simpler.
2020-12-21 09:20:16 +00:00

222 lines
5.4 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)
Q_PROPERTY(int current READ current WRITE setCurrent NOTIFY currentChanged)
Q_PROPERTY(bool currentFollowsMouse READ isCurrentFollowsMouse WRITE setCurrentFollowsMouse)
public:
~Screens() override;
/**
* @internal
*/
void setConfig(KSharedConfig::Ptr config);
int count() const;
int current() const;
void setCurrent(int current);
/**
* Called e.g. when a user clicks on a window, set current screen to be the screen
* where the click occurred
*/
void setCurrent(const QPoint &pos);
/**
* Check whether a client moved completely out of what's considered the current screen,
* if yes, set a new active screen.
*/
void setCurrent(const AbstractClient *c);
bool isCurrentFollowsMouse() const;
void setCurrentFollowsMouse(bool follows);
virtual 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 output name of the screen (usually eg. LVDS-1, VGA-0 or DVI-I-1 etc.)
*/
virtual QString name(int screen) const;
/**
* @returns current refreshrate of the @p screen.
*/
virtual float refreshRate(int screen) const;
/**
* @returns size of the @p screen.
*
* To get the size of all screens combined use size().
* @see size()
*/
virtual QSize size(int screen) 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
*/
virtual 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;
virtual int number(const QPoint &pos) const;
int intersecting(const QRect &r) const;
/**
* The virtual bounding size of all screens combined.
* The default implementation returns the same as @ref size and that is the
* method which should be preferred.
*
* This method is only for cases where the platform specific implementation needs
* to support different virtual sizes like on X11 with XRandR panning.
*
* @see size
*/
virtual QSize displaySize() const;
/**
* The physical size of @p screen in mm.
* Default implementation returns a size derived from 96 DPI.
*/
virtual QSizeF physicalSize(int screen) const;
/**
* @returns @c true if the @p screen is connected through an internal display (e.g. LVDS).
* Default implementation returns @c false.
*/
virtual bool isInternal(int screen) const;
virtual Qt::ScreenOrientation orientation(int screen) const;
int physicalDpiX(int screen) const;
int physicalDpiY(int screen) const;
public Q_SLOTS:
void reconfigure();
Q_SIGNALS:
void countChanged(int previousCount, int newCount);
/**
* Emitted whenever the screens are changed either count or geometry.
*/
void changed();
void currentChanged();
/**
* 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);
virtual 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.
*/
virtual void init();
private Q_SLOTS:
void updateSize();
private:
AbstractOutput *findOutput(int screenId) const;
int m_count;
int m_current;
bool m_currentFollowsMouse;
KSharedConfig::Ptr m_config;
QSize m_boundingSize;
qreal m_maxScale;
KWIN_SINGLETON(Screens)
};
inline
int Screens::count() const
{
return m_count;
}
inline
bool Screens::isCurrentFollowsMouse() const
{
return m_currentFollowsMouse;
}
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