kwin/pointer_input.h
2020-08-07 19:57:56 +00:00

284 lines
8 KiB
C++

/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2013, 2016 Martin Gräßlin <mgraesslin@kde.org>
SPDX-FileCopyrightText: 2018 Roman Gilg <subdiff@gmail.com>
SPDX-FileCopyrightText: 2019 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef KWIN_POINTER_INPUT_H
#define KWIN_POINTER_INPUT_H
#include "input.h"
#include "cursor.h"
#include "xcursortheme.h"
#include <QElapsedTimer>
#include <QObject>
#include <QPointer>
#include <QPointF>
class QWindow;
namespace KWaylandServer
{
class SurfaceInterface;
}
namespace KWin
{
class CursorImage;
class InputRedirection;
class Toplevel;
class CursorShape;
namespace Decoration
{
class DecoratedClientImpl;
}
namespace LibInput
{
class Device;
}
uint32_t qtMouseButtonToButton(Qt::MouseButton button);
class KWIN_EXPORT PointerInputRedirection : public InputDeviceHandler
{
Q_OBJECT
public:
explicit PointerInputRedirection(InputRedirection *parent);
~PointerInputRedirection() override;
void init() override;
void updateAfterScreenChange();
bool supportsWarping() const;
void warp(const QPointF &pos);
QPointF pos() const {
return m_pos;
}
Qt::MouseButtons buttons() const {
return m_qtButtons;
}
bool areButtonsPressed() const;
void setEffectsOverrideCursor(Qt::CursorShape shape);
void removeEffectsOverrideCursor();
void setWindowSelectionCursor(const QByteArray &shape);
void removeWindowSelectionCursor();
void updatePointerConstraints();
void setEnableConstraints(bool set);
bool isConstrained() const {
return m_confined || m_locked;
}
bool focusUpdatesBlocked() override;
/**
* @internal
*/
void processMotion(const QPointF &pos, uint32_t time, LibInput::Device *device = nullptr);
/**
* @internal
*/
void processMotion(const QPointF &pos, const QSizeF &delta, const QSizeF &deltaNonAccelerated, uint32_t time, quint64 timeUsec, LibInput::Device *device);
/**
* @internal
*/
void processButton(uint32_t button, InputRedirection::PointerButtonState state, uint32_t time, LibInput::Device *device = nullptr);
/**
* @internal
*/
void processAxis(InputRedirection::PointerAxis axis, qreal delta, qint32 discreteDelta, InputRedirection::PointerAxisSource source, uint32_t time, LibInput::Device *device = nullptr);
/**
* @internal
*/
void processSwipeGestureBegin(int fingerCount, quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processSwipeGestureUpdate(const QSizeF &delta, quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processSwipeGestureEnd(quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processSwipeGestureCancelled(quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processPinchGestureBegin(int fingerCount, quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processPinchGestureUpdate(qreal scale, qreal angleDelta, const QSizeF &delta, quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processPinchGestureEnd(quint32 time, KWin::LibInput::Device *device = nullptr);
/**
* @internal
*/
void processPinchGestureCancelled(quint32 time, KWin::LibInput::Device *device = nullptr);
private:
void cleanupInternalWindow(QWindow *old, QWindow *now) override;
void cleanupDecoration(Decoration::DecoratedClientImpl *old, Decoration::DecoratedClientImpl *now) override;
void focusUpdate(Toplevel *focusOld, Toplevel *focusNow) override;
QPointF position() const override;
void updateOnStartMoveResize();
void updateToReset();
void updatePosition(const QPointF &pos);
void updateButton(uint32_t button, InputRedirection::PointerButtonState state);
void warpXcbOnSurfaceLeft(KWaylandServer::SurfaceInterface *surface);
QPointF applyPointerConfinement(const QPointF &pos) const;
void disconnectConfinedPointerRegionConnection();
void disconnectLockedPointerAboutToBeUnboundConnection();
void disconnectPointerConstraintsConnection();
void breakPointerConstraints(KWaylandServer::SurfaceInterface *surface);
CursorImage *m_cursor;
bool m_supportsWarping;
QPointF m_pos;
QHash<uint32_t, InputRedirection::PointerButtonState> m_buttons;
Qt::MouseButtons m_qtButtons;
QMetaObject::Connection m_focusGeometryConnection;
QMetaObject::Connection m_internalWindowConnection;
QMetaObject::Connection m_constraintsConnection;
QMetaObject::Connection m_constraintsActivatedConnection;
QMetaObject::Connection m_confinedPointerRegionConnection;
QMetaObject::Connection m_lockedPointerAboutToBeUnboundConnection;
QMetaObject::Connection m_decorationGeometryConnection;
bool m_confined = false;
bool m_locked = false;
bool m_enableConstraints = true;
};
class WaylandCursorImage : public QObject
{
Q_OBJECT
public:
explicit WaylandCursorImage(QObject *parent = nullptr);
struct Image {
QImage image;
QPoint hotspot;
};
void loadThemeCursor(const CursorShape &shape, Image *cursorImage);
void loadThemeCursor(const QByteArray &name, Image *cursorImage);
Q_SIGNALS:
void themeChanged();
private:
bool loadThemeCursor_helper(const QByteArray &name, Image *cursorImage);
bool ensureCursorTheme();
void invalidateCursorTheme();
KXcursorTheme m_cursorTheme;
};
class CursorImage : public QObject
{
Q_OBJECT
public:
explicit CursorImage(PointerInputRedirection *parent = nullptr);
~CursorImage() override;
void setEffectsOverrideCursor(Qt::CursorShape shape);
void removeEffectsOverrideCursor();
void setWindowSelectionCursor(const QByteArray &shape);
void removeWindowSelectionCursor();
QImage image() const;
QPoint hotSpot() const;
void markAsRendered();
Q_SIGNALS:
void changed();
private:
void reevaluteSource();
void update();
void updateServerCursor();
void updateDecoration();
void updateDecorationCursor();
void updateMoveResize();
void updateDrag();
void updateDragCursor();
void loadThemeCursor(CursorShape shape, WaylandCursorImage::Image *image);
void loadThemeCursor(const QByteArray &shape, WaylandCursorImage::Image *image);
enum class CursorSource {
LockScreen,
EffectsOverride,
MoveResize,
PointerSurface,
Decoration,
DragAndDrop,
Fallback,
WindowSelector
};
void setSource(CursorSource source);
PointerInputRedirection *m_pointer;
CursorSource m_currentSource = CursorSource::Fallback;
WaylandCursorImage m_waylandImage;
WaylandCursorImage::Image m_effectsCursor;
WaylandCursorImage::Image m_decorationCursor;
QMetaObject::Connection m_decorationConnection;
WaylandCursorImage::Image m_fallbackCursor;
WaylandCursorImage::Image m_moveResizeCursor;
WaylandCursorImage::Image m_windowSelectionCursor;
QElapsedTimer m_surfaceRenderedTimer;
struct {
WaylandCursorImage::Image cursor;
QMetaObject::Connection connection;
} m_drag;
struct {
QMetaObject::Connection connection;
WaylandCursorImage::Image cursor;
} m_serverCursor;
};
/**
* @brief Implementation using the InputRedirection framework to get pointer positions.
*
* Does not support warping of cursor.
*/
class InputRedirectionCursor : public KWin::Cursor
{
Q_OBJECT
public:
explicit InputRedirectionCursor(QObject *parent);
~InputRedirectionCursor() override;
protected:
void doSetPos() override;
void doStartCursorTracking() override;
void doStopCursorTracking() override;
private Q_SLOTS:
void slotPosChanged(const QPointF &pos);
void slotPointerButtonChanged();
void slotModifiersChanged(Qt::KeyboardModifiers mods, Qt::KeyboardModifiers oldMods);
private:
Qt::MouseButtons m_currentButtons;
};
}
#endif