File indexing completed on 2024-04-28 05:30:28

 /*
     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
 */
 #pragma once
 
 #include "cursor.h"
 #include "input.h"
 #include "utils/xcursortheme.h"
 
 #include <QElapsedTimer>
 #include <QObject>
 #include <QPointF>
 #include <QPointer>
 
 class QWindow;
 
 namespace KWin
 {
 class Window;
 class CursorImage;
 class InputDevice;
 class InputRedirection;
 class CursorShape;
 class ShapeCursorSource;
 class SurfaceCursorSource;
 class PointerSurfaceCursor;
 class SurfaceInterface;
 
 namespace Decoration
 {
 class DecoratedClientImpl;
 }
 
 
 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 processMotionAbsolute(const QPointF &pos, std::chrono::microseconds time, InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processMotion(const QPointF &delta, const QPointF &deltaNonAccelerated, std::chrono::microseconds time, InputDevice *device);
     /**
      * @internal
      */
     void processButton(uint32_t button, InputRedirection::PointerButtonState state, std::chrono::microseconds time, InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processAxis(InputRedirection::PointerAxis axis, qreal delta, qint32 deltaV120, InputRedirection::PointerAxisSource source, std::chrono::microseconds time, InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processSwipeGestureBegin(int fingerCount, std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processSwipeGestureUpdate(const QPointF &delta, std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processSwipeGestureEnd(std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processSwipeGestureCancelled(std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processPinchGestureBegin(int fingerCount, std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processPinchGestureUpdate(qreal scale, qreal angleDelta, const QPointF &delta, std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processPinchGestureEnd(std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processPinchGestureCancelled(std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processHoldGestureBegin(int fingerCount, std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processHoldGestureEnd(std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processHoldGestureCancelled(std::chrono::microseconds time, KWin::InputDevice *device = nullptr);
     /**
      * @internal
      */
     void processFrame(KWin::InputDevice *device = nullptr);
 
 private:
     void processMotionInternal(const QPointF &pos, const QPointF &delta, const QPointF &deltaNonAccelerated, std::chrono::microseconds time, InputDevice *device);
     void cleanupDecoration(Decoration::DecoratedClientImpl *old, Decoration::DecoratedClientImpl *now) override;
 
     void focusUpdate(Window *focusOld, Window *focusNow) override;
 
     QPointF position() const override;
 
     void updateOnStartMoveResize();
     void updateToReset();
     void updatePosition(const QPointF &pos);
     void updateButton(uint32_t button, InputRedirection::PointerButtonState state);
     QPointF applyPointerConfinement(const QPointF &pos) const;
     void disconnectConfinedPointerRegionConnection();
     void disconnectLockedPointerAboutToBeUnboundConnection();
     void disconnectPointerConstraintsConnection();
     void breakPointerConstraints(SurfaceInterface *surface);
     CursorImage *m_cursor;
     QPointF m_pos;
     QHash<uint32_t, InputRedirection::PointerButtonState> m_buttons;
     Qt::MouseButtons m_qtButtons;
     QMetaObject::Connection m_focusGeometryConnection;
     QMetaObject::Connection m_constraintsConnection;
     QMetaObject::Connection m_constraintsActivatedConnection;
     QMetaObject::Connection m_confinedPointerRegionConnection;
     QMetaObject::Connection m_lockedPointerAboutToBeUnboundConnection;
     QMetaObject::Connection m_decorationGeometryConnection;
     QMetaObject::Connection m_decorationDestroyedConnection;
     QMetaObject::Connection m_decorationClosedConnection;
     bool m_confined = false;
     bool m_locked = false;
     bool m_enableConstraints = true;
     bool m_lastOutputWasPlaceholder = true;
     friend class PositionUpdateBlocker;
 };
 
 class WaylandCursorImage : public QObject
 {
     Q_OBJECT
 public:
     explicit WaylandCursorImage(QObject *parent = nullptr);
 
     KXcursorTheme theme() const;
 
 Q_SIGNALS:
     void themeChanged();
 
 private:
     void updateCursorTheme();
 
     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();
 
     KXcursorTheme theme() const;
     CursorSource *source() const;
     void setSource(CursorSource *source);
 
     void updateCursorOutputs(const QPointF &pos);
     void markAsRendered(std::chrono::milliseconds timestamp);
 
 Q_SIGNALS:
     void changed();
 
 private:
     void reevaluteSource();
     void updateServerCursor(const std::variant<PointerSurfaceCursor *, QByteArray> &cursor);
     void updateDecoration();
     void updateDecorationCursor();
     void updateMoveResize();
 
     void handleFocusedSurfaceChanged();
 
     PointerInputRedirection *m_pointer;
     CursorSource *m_currentSource = nullptr;
     WaylandCursorImage m_waylandImage;
 
     std::unique_ptr<ShapeCursorSource> m_effectsCursor;
     std::unique_ptr<ShapeCursorSource> m_fallbackCursor;
     std::unique_ptr<ShapeCursorSource> m_moveResizeCursor;
     std::unique_ptr<ShapeCursorSource> m_windowSelectionCursor;
 
     struct
     {
         std::unique_ptr<ShapeCursorSource> cursor;
         QMetaObject::Connection connection;
     } m_decoration;
     struct
     {
         QMetaObject::Connection connection;
         std::unique_ptr<SurfaceCursorSource> surface;
         std::unique_ptr<ShapeCursorSource> shape;
         CursorSource *cursor = nullptr;
     } 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();
     ~InputRedirectionCursor() override;
 
 protected:
     void doSetPos() override;
 
 private Q_SLOTS:
     void slotPosChanged(const QPointF &pos);
     void slotPointerButtonChanged();
     void slotModifiersChanged(Qt::KeyboardModifiers mods, Qt::KeyboardModifiers oldMods);
 
 private:
     Qt::MouseButtons m_currentButtons;
 };
 
 }