36f987198d
InputRedirection gains basic support for processing touch events which are delegated to KWayland::Server. WaylandBackend accepts touch events from KWayland::Client and delegates them to the InputRedirection.
269 lines
8.2 KiB
C++
269 lines
8.2 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_INPUT_H
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#define KWIN_INPUT_H
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#include <kwinglobals.h>
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#include <QAction>
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#include <QHash>
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#include <QObject>
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#include <QPoint>
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#include <QEvent>
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#include <QWeakPointer>
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#include <config-kwin.h>
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class QKeySequence;
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struct xkb_context;
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struct xkb_keymap;
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struct xkb_state;
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typedef uint32_t xkb_mod_index_t;
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typedef uint32_t xkb_keysym_t;
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namespace KWin
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{
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class GlobalShortcutsManager;
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class Toplevel;
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class Xkb;
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/**
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* @brief This class is responsible for redirecting incoming input to the surface which currently
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* has input or send enter/leave events.
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*
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* In addition input is intercepted before passed to the surfaces to have KWin internal areas
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* getting input first (e.g. screen edges) and filter the input event out if we currently have
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* a full input grab.
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*
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*/
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class InputRedirection : public QObject
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{
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Q_OBJECT
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public:
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enum PointerButtonState {
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PointerButtonReleased,
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PointerButtonPressed
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};
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enum PointerAxis {
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PointerAxisVertical,
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PointerAxisHorizontal
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};
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enum KeyboardKeyState {
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KeyboardKeyReleased,
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KeyboardKeyPressed
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};
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virtual ~InputRedirection();
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/**
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* @return const QPointF& The current global pointer position
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*/
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const QPointF &globalPointer() const;
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/**
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* @brief The last known state of the @p button. If @p button is still unknown the state is
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* @c PointerButtonReleased.
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*
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* @param button The button for which the last known state should be queried.
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* @return KWin::InputRedirection::PointerButtonState
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*/
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PointerButtonState pointerButtonState(uint32_t button) const;
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Qt::MouseButtons qtButtonStates() const;
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Qt::KeyboardModifiers keyboardModifiers() const;
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void registerShortcut(const QKeySequence &shortcut, QAction *action);
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/**
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* @overload
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*
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* Like registerShortcut, but also connects QAction::triggered to the @p slot on @p receiver.
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* It's recommended to use this method as it ensures that the X11 timestamp is updated prior
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* to the @p slot being invoked. If not using this overload it's required to ensure that
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* registerShortcut is called before connecting to QAction's triggered signal.
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**/
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template <typename T>
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void registerShortcut(const QKeySequence &shortcut, QAction *action, T *receiver, void (T::*slot)());
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void registerPointerShortcut(Qt::KeyboardModifiers modifiers, Qt::MouseButton pointerButtons, QAction *action);
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void registerAxisShortcut(Qt::KeyboardModifiers modifiers, PointerAxisDirection axis, QAction *action);
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/**
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* @internal
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*/
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void processPointerMotion(const QPointF &pos, uint32_t time);
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/**
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* @internal
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*/
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void processPointerButton(uint32_t button, PointerButtonState state, uint32_t time);
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/**
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* @internal
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*/
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void processPointerAxis(PointerAxis axis, qreal delta, uint32_t time);
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/**
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* @internal
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*/
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void processKeyboardKey(uint32_t key, KeyboardKeyState state, uint32_t time);
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/**
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* @internal
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*/
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void processKeyboardModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group);
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/**
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* @internal
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**/
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void processKeymapChange(int fd, uint32_t size);
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void processTouchDown(qint32 id, const QPointF &pos, quint32 time);
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void processTouchUp(qint32 id, quint32 time);
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void processTouchMotion(qint32 id, const QPointF &pos, quint32 time);
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void cancelTouch();
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void touchFrame();
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static uint8_t toXPointerButton(uint32_t button);
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static uint8_t toXPointerButton(PointerAxis axis, qreal delta);
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public Q_SLOTS:
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void updatePointerWindow();
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Q_SIGNALS:
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/**
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* @brief Emitted when the global pointer position changed
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*
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* @param pos The new global pointer position.
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*/
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void globalPointerChanged(const QPointF &pos);
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/**
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* @brief Emitted when the state of a pointer button changed.
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*
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* @param button The button which changed
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* @param state The new button state
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*/
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void pointerButtonStateChanged(uint32_t button, InputRedirection::PointerButtonState state);
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/**
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* @brief Emitted when a pointer axis changed
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*
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* @param axis The axis on which the even occurred
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* @param delta The delta of the event.
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*/
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void pointerAxisChanged(InputRedirection::PointerAxis axis, qreal delta);
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/**
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* @brief Emitted when the modifiers changes.
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*
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* Only emitted for the mask which is provided by Qt::KeyboardModifiers, if other modifiers
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* change signal is not emitted
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*
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* @param newMods The new modifiers state
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* @param oldMods The previous modifiers state
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*/
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void keyboardModifiersChanged(Qt::KeyboardModifiers newMods, Qt::KeyboardModifiers oldMods);
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private:
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static QEvent::Type buttonStateToEvent(PointerButtonState state);
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static Qt::MouseButton buttonToQtMouseButton(uint32_t button);
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Toplevel *findToplevel(const QPoint &pos);
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void setupLibInput();
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void updatePointerPosition(const QPointF &pos);
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void updatePointerAfterScreenChange();
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void registerShortcutForGlobalAccelTimestamp(QAction *action);
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void updateFocusedPointerPosition();
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void updateFocusedTouchPosition();
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void updateTouchWindow(const QPointF &pos);
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QPointF m_globalPointer;
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QHash<uint32_t, PointerButtonState> m_pointerButtons;
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#if HAVE_XKB
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QScopedPointer<Xkb> m_xkb;
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#endif
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/**
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* @brief The Toplevel which currently receives pointer events
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*/
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QWeakPointer<Toplevel> m_pointerWindow;
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/**
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* @brief The Toplevel which currently receives touch events
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*/
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QWeakPointer<Toplevel> m_touchWindow;
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/**
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* external/kwayland
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**/
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QHash<qint32, qint32> m_touchIdMapper;
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GlobalShortcutsManager *m_shortcuts;
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KWIN_SINGLETON(InputRedirection)
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friend InputRedirection *input();
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};
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#if HAVE_XKB
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class Xkb
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{
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public:
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Xkb();
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~Xkb();
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void installKeymap(int fd, uint32_t size);
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void updateModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group);
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void updateKey(uint32_t key, InputRedirection::KeyboardKeyState state);
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xkb_keysym_t toKeysym(uint32_t key);
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QString toString(xkb_keysym_t keysym);
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Qt::Key toQtKey(xkb_keysym_t keysym);
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Qt::KeyboardModifiers modifiers() const;
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private:
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xkb_context *m_context;
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xkb_keymap *m_keymap;
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xkb_state *m_state;
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xkb_mod_index_t m_shiftModifier;
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xkb_mod_index_t m_controlModifier;
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xkb_mod_index_t m_altModifier;
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xkb_mod_index_t m_metaModifier;
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Qt::KeyboardModifiers m_modifiers;
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};
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#endif
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inline
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InputRedirection *input()
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{
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return InputRedirection::s_self;
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}
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inline
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const QPointF &InputRedirection::globalPointer() const
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{
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return m_globalPointer;
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}
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inline
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InputRedirection::PointerButtonState InputRedirection::pointerButtonState(uint32_t button) const
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{
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auto it = m_pointerButtons.constFind(button);
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if (it != m_pointerButtons.constEnd()) {
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return it.value();
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} else {
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return KWin::InputRedirection::PointerButtonReleased;
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}
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}
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template <typename T>
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inline
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void InputRedirection::registerShortcut(const QKeySequence &shortcut, QAction *action, T *receiver, void (T::*slot)()) {
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registerShortcut(shortcut, action);
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connect(action, &QAction::triggered, receiver, slot);
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}
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#if HAVE_XKB
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inline
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Qt::KeyboardModifiers Xkb::modifiers() const
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{
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return m_modifiers;
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}
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#endif
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} // namespace KWin
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#endif // KWIN_INPUT_H
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