File indexing completed on 2024-04-28 05:30:17

 /*
     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
 */
 #pragma once
 // KWin
 #include "effect/globals.h"
 // Qt
 #include <QKeySequence>
 
 #include <memory>
 
 class QAction;
 class KGlobalAccelD;
 class KGlobalAccelInterface;
 
 namespace KWin
 {
 class GlobalShortcut;
 class SwipeGesture;
 class PinchGesture;
 class GestureRecognizer;
 
 enum class DeviceType {
     Touchpad,
     Touchscreen
 };
 
 /**
  * @brief Manager for the global shortcut system inside KWin.
  *
  * This class is responsible for holding all the global shortcuts and to process a key press event.
  * That is trigger a shortcut if there is a match.
  *
  * For internal shortcut handling (those which are delivered inside KWin) QActions are used and
  * triggered if the shortcut matches. For external shortcut handling a DBus interface is used.
  */
 class GlobalShortcutsManager : public QObject
 {
     Q_OBJECT
 public:
     explicit GlobalShortcutsManager(QObject *parent = nullptr);
     ~GlobalShortcutsManager() override;
     void init();
 
     /**
      * @brief Registers an internal global pointer shortcut
      *
      * @param action The action to trigger if the shortcut is pressed
      * @param modifiers The modifiers which need to be hold to trigger the action
      * @param pointerButtons The pointer button which needs to be pressed
      */
     void registerPointerShortcut(QAction *action, Qt::KeyboardModifiers modifiers, Qt::MouseButtons pointerButtons);
     /**
      * @brief Registers an internal global axis shortcut
      *
      * @param action The action to trigger if the shortcut is triggered
      * @param modifiers The modifiers which need to be hold to trigger the action
      * @param axis The pointer axis
      */
     void registerAxisShortcut(QAction *action, Qt::KeyboardModifiers modifiers, PointerAxisDirection axis);
 
     void registerTouchpadSwipe(SwipeDirection direction, uint32_t fingerCount, QAction *action, std::function<void(qreal)> progressCallback = {});
     void registerTouchpadPinch(PinchDirection direction, uint32_t fingerCount, QAction *action, std::function<void(qreal)> progressCallback = {});
     void registerTouchscreenSwipe(SwipeDirection direction, uint32_t fingerCount, QAction *action, std::function<void(qreal)> progressCallback = {});
     void forceRegisterTouchscreenSwipe(SwipeDirection direction, uint32_t fingerCount, QAction *action, std::function<void(qreal)> progressCallback = {});
 
     /**
      * @brief Processes a key event to decide whether a shortcut needs to be triggered.
      *
      * If a shortcut triggered this method returns @c true to indicate to the caller that the event
      * should not be further processed. If there is no shortcut which triggered for the key, then
      * @c false is returned.
      *
      * @param modifiers The current hold modifiers
      * @param keyQt The Qt::Key which got pressed
      * @return @c true if a shortcut triggered, @c false otherwise
      */
     bool processKey(Qt::KeyboardModifiers modifiers, int keyQt);
     bool processKeyRelease(Qt::KeyboardModifiers modifiers, int keyQt);
     bool processPointerPressed(Qt::KeyboardModifiers modifiers, Qt::MouseButtons pointerButtons);
     /**
      * @brief Processes a pointer axis event to decide whether a shortcut needs to be triggered.
      *
      * If a shortcut triggered this method returns @c true to indicate to the caller that the event
      * should not be further processed. If there is no shortcut which triggered for the key, then
      * @c false is returned.
      *
      * @param modifiers The current hold modifiers
      * @param axis The axis direction which has triggered this event
      * @return @c true if a shortcut triggered, @c false otherwise
      */
     bool processAxis(Qt::KeyboardModifiers modifiers, PointerAxisDirection axis);
 
     void processSwipeStart(DeviceType device, uint fingerCount);
     void processSwipeUpdate(DeviceType device, const QPointF &delta);
     void processSwipeCancel(DeviceType device);
     void processSwipeEnd(DeviceType device);
 
     void processPinchStart(uint fingerCount);
     void processPinchUpdate(qreal scale, qreal angleDelta, const QPointF &delta);
     void processPinchCancel();
     void processPinchEnd();
 
     void setKGlobalAccelInterface(KGlobalAccelInterface *interface)
     {
         m_kglobalAccelInterface = interface;
     }
 
 private:
     void objectDeleted(QObject *object);
     bool add(GlobalShortcut sc, DeviceType device = DeviceType::Touchpad);
 
     QList<GlobalShortcut> m_shortcuts;
 
     std::unique_ptr<KGlobalAccelD> m_kglobalAccel;
     KGlobalAccelInterface *m_kglobalAccelInterface = nullptr;
     std::unique_ptr<GestureRecognizer> m_touchpadGestureRecognizer;
     std::unique_ptr<GestureRecognizer> m_touchscreenGestureRecognizer;
 };
 
 struct KeyboardShortcut
 {
     QKeySequence sequence;
     bool operator==(const KeyboardShortcut &rhs) const
     {
         return sequence == rhs.sequence;
     }
 };
 struct PointerButtonShortcut
 {
     Qt::KeyboardModifiers pointerModifiers;
     Qt::MouseButtons pointerButtons;
     bool operator==(const PointerButtonShortcut &rhs) const
     {
         return pointerModifiers == rhs.pointerModifiers && pointerButtons == rhs.pointerButtons;
     }
 };
 struct PointerAxisShortcut
 {
     Qt::KeyboardModifiers axisModifiers;
     PointerAxisDirection axisDirection;
     bool operator==(const PointerAxisShortcut &rhs) const
     {
         return axisModifiers == rhs.axisModifiers && axisDirection == rhs.axisDirection;
     }
 };
 struct RealtimeFeedbackSwipeShortcut
 {
     DeviceType device;
     SwipeDirection direction;
     std::function<void(qreal)> progressCallback;
     uint fingerCount;
 
     template<typename T>
     bool operator==(const T &rhs) const
     {
         return direction == rhs.direction && fingerCount == rhs.fingerCount && device == rhs.device;
     }
 };
 struct RealtimeFeedbackPinchShortcut
 {
     PinchDirection direction;
     std::function<void(qreal)> scaleCallback;
     uint fingerCount;
 
     template<typename T>
     bool operator==(const T &rhs) const
     {
         return direction == rhs.direction && fingerCount == rhs.fingerCount;
     }
 };
 
 using Shortcut = std::variant<KeyboardShortcut, PointerButtonShortcut, PointerAxisShortcut, RealtimeFeedbackSwipeShortcut, RealtimeFeedbackPinchShortcut>;
 
 class GlobalShortcut
 {
 public:
     GlobalShortcut(Shortcut &&shortcut, QAction *action);
     ~GlobalShortcut();
 
     void invoke() const;
     QAction *action() const;
     const Shortcut &shortcut() const;
     SwipeGesture *swipeGesture() const;
     PinchGesture *pinchGesture() const;
 
 private:
     std::shared_ptr<SwipeGesture> m_swipeGesture;
     std::shared_ptr<PinchGesture> m_pinchGesture;
     Shortcut m_shortcut = {};
     QAction *m_action = nullptr;
 };
 
 } // namespace