kwin/input.cpp
Martin Gräßlin c29f96665d [wayland] Pass pointer input events to SeatInterface
Pointer events are no longer sent through the methods on Toplevel,
but properly sent through the SeatInterface. This has the advantage
that SeatInterface properly tracks which is the focused pointer surface
and does not need to use the xtest extension.
2015-03-17 10:20:19 +01:00

650 lines
20 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "input.h"
#include "client.h"
#include "effects.h"
#include "globalshortcuts.h"
#include "logind.h"
#include "main.h"
#ifdef KWIN_BUILD_TABBOX
#include "tabbox/tabbox.h"
#endif
#include "unmanaged.h"
#include "screens.h"
#include "workspace.h"
#if HAVE_INPUT
#include "libinput/connection.h"
#endif
#if HAVE_WAYLAND
#include "wayland_server.h"
#include <KWayland/Server/seat_interface.h>
#endif
// Qt
#include <QKeyEvent>
#include <QMouseEvent>
// KDE
#include <kkeyserver.h>
#if HAVE_XKB
#include <xkbcommon/xkbcommon.h>
#endif
// system
#include <linux/input.h>
#include <sys/mman.h>
namespace KWin
{
#if HAVE_XKB
Xkb::Xkb()
: m_context(xkb_context_new(static_cast<xkb_context_flags>(0)))
, m_keymap(NULL)
, m_state(NULL)
, m_shiftModifier(0)
, m_controlModifier(0)
, m_altModifier(0)
, m_metaModifier(0)
, m_modifiers(Qt::NoModifier)
{
if (!m_context) {
qCDebug(KWIN_CORE) << "Could not create xkb context";
}
}
Xkb::~Xkb()
{
xkb_state_unref(m_state);
xkb_keymap_unref(m_keymap);
xkb_context_unref(m_context);
}
void Xkb::installKeymap(int fd, uint32_t size)
{
if (!m_context) {
return;
}
char *map = reinterpret_cast<char*>(mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
if (map == MAP_FAILED) {
return;
}
xkb_keymap *keymap = xkb_keymap_new_from_string(m_context, map, XKB_KEYMAP_FORMAT_TEXT_V1, XKB_MAP_COMPILE_PLACEHOLDER);
munmap(map, size);
if (!keymap) {
qCDebug(KWIN_CORE) << "Could not map keymap from file";
return;
}
xkb_state *state = xkb_state_new(keymap);
if (!state) {
qCDebug(KWIN_CORE) << "Could not create XKB state";
xkb_keymap_unref(keymap);
return;
}
// now release the old ones
xkb_state_unref(m_state);
xkb_keymap_unref(m_keymap);
m_keymap = keymap;
m_state = state;
m_shiftModifier = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_SHIFT);
m_controlModifier = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_CTRL);
m_altModifier = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_ALT);
m_metaModifier = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_LOGO);
}
void Xkb::updateModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group)
{
if (!m_keymap || !m_state) {
return;
}
xkb_state_update_mask(m_state, modsDepressed, modsLatched, modsLocked, 0, 0, group);
Qt::KeyboardModifiers mods = Qt::NoModifier;
if (xkb_state_mod_index_is_active(m_state, m_shiftModifier, XKB_STATE_MODS_EFFECTIVE) == 1) {
mods |= Qt::ShiftModifier;
}
if (xkb_state_mod_index_is_active(m_state, m_altModifier, XKB_STATE_MODS_EFFECTIVE) == 1) {
mods |= Qt::AltModifier;
}
if (xkb_state_mod_index_is_active(m_state, m_controlModifier, XKB_STATE_MODS_EFFECTIVE) == 1) {
mods |= Qt::ControlModifier;
}
if (xkb_state_mod_index_is_active(m_state, m_metaModifier, XKB_STATE_MODS_EFFECTIVE) == 1) {
mods |= Qt::MetaModifier;
}
m_modifiers = mods;
}
void Xkb::updateKey(uint32_t key, InputRedirection::KeyboardKeyState state)
{
if (!m_keymap || !m_state) {
return;
}
xkb_state_update_key(m_state, key + 8, static_cast<xkb_key_direction>(state));
}
xkb_keysym_t Xkb::toKeysym(uint32_t key)
{
if (!m_state) {
return XKB_KEY_NoSymbol;
}
return xkb_state_key_get_one_sym(m_state, key + 8);
}
QString Xkb::toString(xkb_keysym_t keysym)
{
if (!m_state || keysym == XKB_KEY_NoSymbol) {
return QString();
}
QByteArray byteArray(7, 0);
int ok = xkb_keysym_to_utf8(keysym, byteArray.data(), byteArray.size());
if (ok == -1 || ok == 0) {
return QString();
}
return QString::fromUtf8(byteArray.constData());
}
Qt::Key Xkb::toQtKey(xkb_keysym_t keysym)
{
int key = Qt::Key_unknown;
KKeyServer::symXToKeyQt(keysym, &key);
return static_cast<Qt::Key>(key);
}
#endif
KWIN_SINGLETON_FACTORY(InputRedirection)
InputRedirection::InputRedirection(QObject *parent)
: QObject(parent)
#if HAVE_XKB
, m_xkb(new Xkb())
#endif
, m_pointerWindow()
, m_shortcuts(new GlobalShortcutsManager(this))
{
#if HAVE_INPUT
if (Application::usesLibinput()) {
LogindIntegration *logind = LogindIntegration::self();
auto takeControl = [logind, this]() {
if (logind->hasSessionControl()) {
setupLibInput();
} else {
logind->takeControl();
connect(logind, &LogindIntegration::hasSessionControlChanged, this, &InputRedirection::setupLibInput);
}
};
if (logind->isConnected()) {
takeControl();
} else {
connect(logind, &LogindIntegration::connectedChanged, this, takeControl);
}
}
#endif
}
InputRedirection::~InputRedirection()
{
s_self = NULL;
}
void InputRedirection::setupLibInput()
{
#if HAVE_INPUT
if (!Application::usesLibinput()) {
return;
}
LibInput::Connection *conn = LibInput::Connection::create(this);
if (conn) {
conn->setup();
conn->setScreenSize(screens()->size());
connect(screens(), &Screens::sizeChanged, this,
[this, conn] {
conn->setScreenSize(screens()->size());
}
);
connect(conn, &LibInput::Connection::pointerButtonChanged, this, &InputRedirection::processPointerButton);
connect(conn, &LibInput::Connection::pointerAxisChanged, this, &InputRedirection::processPointerAxis);
connect(conn, &LibInput::Connection::keyChanged, this, &InputRedirection::processKeyboardKey);
connect(conn, &LibInput::Connection::pointerMotion, this,
[this] (QPointF delta, uint32_t time) {
processPointerMotion(m_globalPointer + delta, time);
}
);
connect(conn, &LibInput::Connection::pointerMotionAbsolute, this,
[this] (QPointF orig, QPointF screen, uint32_t time) {
Q_UNUSED(orig)
processPointerMotion(screen, time);
}
);
connect(screens(), &Screens::changed, this, &InputRedirection::updatePointerAfterScreenChange);
// set pos to center of all screens
if (screens()) {
m_globalPointer = screens()->geometry().center();
emit globalPointerChanged(m_globalPointer);
// sanitize
updatePointerAfterScreenChange();
}
}
#endif
}
#if HAVE_WAYLAND
static KWayland::Server::SeatInterface *findSeat()
{
auto server = waylandServer();
if (!server) {
return nullptr;
}
return server->seat();
}
#endif
void InputRedirection::updatePointerWindow()
{
// TODO: handle pointer grab aka popups
Toplevel *t = findToplevel(m_globalPointer.toPoint());
auto oldWindow = m_pointerWindow;
if (!oldWindow.isNull() && t == m_pointerWindow.data()) {
return;
}
#if HAVE_WAYLAND
if (auto seat = findSeat()) {
// disconnect old surface
if (oldWindow) {
disconnect(oldWindow.data(), &Toplevel::geometryChanged, this, &InputRedirection::updateFocusedPointerPosition);
}
if (t && t->surface()) {
seat->setFocusedPointerSurface(t->surface(), t->pos());
connect(t, &Toplevel::geometryChanged, this, &InputRedirection::updateFocusedPointerPosition);
} else {
seat->setFocusedPointerSurface(nullptr);
t = nullptr;
}
}
#endif
if (!t) {
m_pointerWindow.clear();
return;
}
m_pointerWindow = QWeakPointer<Toplevel>(t);
}
void InputRedirection::updateFocusedPointerPosition()
{
#if HAVE_WAYLAND
if (m_pointerWindow.isNull()) {
return;
}
if (workspace()->getMovingClient()) {
// don't update while moving
return;
}
if (auto seat = findSeat()) {
if (m_pointerWindow.data()->surface() != seat->focusedPointerSurface()) {
return;
}
seat->setFocusedPointerSurfacePosition(m_pointerWindow.data()->pos());
}
#endif
}
void InputRedirection::processPointerMotion(const QPointF &pos, uint32_t time)
{
// first update to new mouse position
// const QPointF oldPos = m_globalPointer;
updatePointerPosition(pos);
// TODO: check which part of KWin would like to intercept the event
QMouseEvent event(QEvent::MouseMove, m_globalPointer.toPoint(), m_globalPointer.toPoint(),
Qt::NoButton, qtButtonStates(), keyboardModifiers());
// check whether an effect has a mouse grab
if (effects && static_cast<EffectsHandlerImpl*>(effects)->checkInputWindowEvent(&event)) {
// an effect grabbed the pointer, we do not forward the event to surfaces
return;
}
QWeakPointer<Toplevel> old = m_pointerWindow;
updatePointerWindow();
#if HAVE_WAYLAND
if (auto seat = findSeat()) {
seat->setTimestamp(time);
seat->setPointerPos(pos);
}
#endif
}
void InputRedirection::processPointerButton(uint32_t button, InputRedirection::PointerButtonState state, uint32_t time)
{
m_pointerButtons[button] = state;
emit pointerButtonStateChanged(button, state);
QMouseEvent event(buttonStateToEvent(state), m_globalPointer.toPoint(), m_globalPointer.toPoint(),
buttonToQtMouseButton(button), qtButtonStates(), keyboardModifiers());
// check whether an effect has a mouse grab
if (effects && static_cast<EffectsHandlerImpl*>(effects)->checkInputWindowEvent(&event)) {
// an effect grabbed the pointer, we do not forward the event to surfaces
return;
}
#if HAVE_XKB
if (state == KWin::InputRedirection::PointerButtonPressed) {
if (m_shortcuts->processPointerPressed(m_xkb->modifiers(), qtButtonStates())) {
return;
}
}
#endif
// TODO: check which part of KWin would like to intercept the event
#if HAVE_WAYLAND
if (auto seat = findSeat()) {
seat->setTimestamp(time);
state == PointerButtonPressed ? seat->pointerButtonPressed(button) : seat->pointerButtonReleased(button);
}
#endif
}
void InputRedirection::processPointerAxis(InputRedirection::PointerAxis axis, qreal delta, uint32_t time)
{
if (delta == 0) {
return;
}
emit pointerAxisChanged(axis, delta);
#if HAVE_XKB
if (m_xkb->modifiers() != Qt::NoModifier) {
PointerAxisDirection direction = PointerAxisUp;
if (axis == PointerAxisHorizontal) {
if (delta > 0) {
direction = PointerAxisUp;
} else {
direction = PointerAxisDown;
}
} else {
if (delta > 0) {
direction = PointerAxisLeft;
} else {
direction = PointerAxisRight;
}
}
if (m_shortcuts->processAxis(m_xkb->modifiers(), direction)) {
return;
}
}
#endif
// TODO: check which part of KWin would like to intercept the event
// TODO: Axis support for effect redirection
#if HAVE_WAYLAND
if (auto seat = findSeat()) {
seat->setTimestamp(time);
seat->pointerAxis(axis == InputRedirection::PointerAxisHorizontal ? Qt::Horizontal : Qt::Vertical, delta);
}
#endif
}
void InputRedirection::processKeyboardKey(uint32_t key, InputRedirection::KeyboardKeyState state, uint32_t time)
{
Q_UNUSED(time)
#if HAVE_XKB
m_xkb->updateKey(key, state);
// TODO: pass to internal parts of KWin
#ifdef KWIN_BUILD_TABBOX
if (TabBox::TabBox::self()->isGrabbed()) {
if (state == KWin::InputRedirection::KeyboardKeyPressed) {
TabBox::TabBox::self()->keyPress(m_xkb->modifiers() | m_xkb->toQtKey(m_xkb->toKeysym(key)));
}
return;
}
#endif
if (effects && static_cast< EffectsHandlerImpl* >(effects)->hasKeyboardGrab()) {
const xkb_keysym_t keysym = m_xkb->toKeysym(key);
// TODO: start auto-repeat
// TODO: add modifiers to the event
const QEvent::Type type = (state == KeyboardKeyPressed) ? QEvent::KeyPress : QEvent::KeyRelease;
QKeyEvent event(type, m_xkb->toQtKey(keysym), m_xkb->modifiers(), m_xkb->toString(keysym));
static_cast< EffectsHandlerImpl* >(effects)->grabbedKeyboardEvent(&event);
return;
}
if (Client *c = workspace()->getMovingClient()) {
// TODO: this does not yet fully support moving of the Client
// cursor events change the cursor and on Wayland pointer warping is not possible
c->keyPressEvent(m_xkb->toQtKey(m_xkb->toKeysym(key)));
return;
}
// process global shortcuts
if (state == KeyboardKeyPressed) {
if (m_shortcuts->processKey(m_xkb->modifiers(), m_xkb->toKeysym(key))) {
return;
}
}
#endif
// check unmanaged
if (!workspace()->unmanagedList().isEmpty()) {
// TODO: better check whether this unmanaged should get the key event
workspace()->unmanagedList().first()->sendKeybordKeyEvent(key, state);
return;
}
if (Client *client = workspace()->activeClient()) {
client->sendKeybordKeyEvent(key, state);
}
}
void InputRedirection::processKeyboardModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group)
{
// TODO: send to proper Client and also send when active Client changes
#if HAVE_XKB
Qt::KeyboardModifiers oldMods = keyboardModifiers();
m_xkb->updateModifiers(modsDepressed, modsLatched, modsLocked, group);
if (oldMods != keyboardModifiers()) {
emit keyboardModifiersChanged(keyboardModifiers(), oldMods);
}
#else
Q_UNUSED(modsDepressed)
Q_UNUSED(modsLatched)
Q_UNUSED(modsLocked)
Q_UNUSED(group)
#endif
}
void InputRedirection::processKeymapChange(int fd, uint32_t size)
{
// TODO: should we pass the keymap to our Clients? Or only to the currently active one and update
#if HAVE_XKB
m_xkb->installKeymap(fd, size);
#else
Q_UNUSED(fd)
Q_UNUSED(size)
#endif
}
QEvent::Type InputRedirection::buttonStateToEvent(InputRedirection::PointerButtonState state)
{
switch (state) {
case KWin::InputRedirection::PointerButtonReleased:
return QEvent::MouseButtonRelease;
case KWin::InputRedirection::PointerButtonPressed:
return QEvent::MouseButtonPress;
}
return QEvent::None;
}
Qt::MouseButton InputRedirection::buttonToQtMouseButton(uint32_t button)
{
switch (button) {
case BTN_LEFT:
return Qt::LeftButton;
case BTN_MIDDLE:
return Qt::MiddleButton;
case BTN_RIGHT:
return Qt::RightButton;
case BTN_BACK:
return Qt::XButton1;
case BTN_FORWARD:
return Qt::XButton2;
}
return Qt::NoButton;
}
Qt::MouseButtons InputRedirection::qtButtonStates() const
{
Qt::MouseButtons buttons;
for (auto it = m_pointerButtons.constBegin(); it != m_pointerButtons.constEnd(); ++it) {
if (it.value() == KWin::InputRedirection::PointerButtonReleased) {
continue;
}
Qt::MouseButton button = buttonToQtMouseButton(it.key());
if (button != Qt::NoButton) {
buttons |= button;
}
}
return buttons;
}
Toplevel *InputRedirection::findToplevel(const QPoint &pos)
{
// TODO: check whether the unmanaged wants input events at all
const UnmanagedList &unmanaged = Workspace::self()->unmanagedList();
foreach (Unmanaged *u, unmanaged) {
if (u->geometry().contains(pos)) {
return u;
}
}
const ToplevelList &stacking = Workspace::self()->stackingOrder();
if (stacking.isEmpty()) {
return NULL;
}
auto it = stacking.end();
do {
--it;
Toplevel *t = (*it);
if (t->isDeleted()) {
// a deleted window doesn't get mouse events
continue;
}
if (t->isClient()) {
Client *c = static_cast<Client*>(t);
if (!c->isOnCurrentActivity() || !c->isOnCurrentDesktop() || c->isMinimized() || !c->isCurrentTab()) {
continue;
}
}
if (t->geometry().contains(pos)) {
return t;
}
} while (it != stacking.begin());
return NULL;
}
uint8_t InputRedirection::toXPointerButton(uint32_t button)
{
switch (button) {
case BTN_LEFT:
return XCB_BUTTON_INDEX_1;
case BTN_RIGHT:
return XCB_BUTTON_INDEX_3;
case BTN_MIDDLE:
return XCB_BUTTON_INDEX_2;
default:
// TODO: add more buttons
return XCB_BUTTON_INDEX_ANY;
}
}
uint8_t InputRedirection::toXPointerButton(InputRedirection::PointerAxis axis, qreal delta)
{
switch (axis) {
case PointerAxisVertical:
if (delta < 0) {
return 4;
} else {
return 5;
}
case PointerAxisHorizontal:
if (delta < 0) {
return 6;
} else {
return 7;
}
}
return XCB_BUTTON_INDEX_ANY;
}
Qt::KeyboardModifiers InputRedirection::keyboardModifiers() const
{
#if HAVE_XKB
return m_xkb->modifiers();
#else
return Qt::NoModifier;
#endif
}
void InputRedirection::registerShortcut(const QKeySequence &shortcut, QAction *action)
{
m_shortcuts->registerShortcut(action, shortcut);
registerShortcutForGlobalAccelTimestamp(action);
}
void InputRedirection::registerPointerShortcut(Qt::KeyboardModifiers modifiers, Qt::MouseButton pointerButtons, QAction *action)
{
m_shortcuts->registerPointerShortcut(action, modifiers, pointerButtons);
}
void InputRedirection::registerAxisShortcut(Qt::KeyboardModifiers modifiers, PointerAxisDirection axis, QAction *action)
{
m_shortcuts->registerAxisShortcut(action, modifiers, axis);
}
void InputRedirection::registerShortcutForGlobalAccelTimestamp(QAction *action)
{
connect(action, &QAction::triggered, kwinApp(), [action] {
QVariant timestamp = action->property("org.kde.kglobalaccel.activationTimestamp");
bool ok = false;
const quint32 t = timestamp.toULongLong(&ok);
if (ok) {
kwinApp()->setX11Time(t);
}
});
}
static bool screenContainsPos(const QPointF &pos)
{
for (int i = 0; i < screens()->count(); ++i) {
if (screens()->geometry(i).contains(pos.toPoint())) {
return true;
}
}
return false;
}
void InputRedirection::updatePointerPosition(const QPointF &pos)
{
// verify that at least one screen contains the pointer position
if (!screenContainsPos(pos)) {
return;
}
m_globalPointer = pos;
emit globalPointerChanged(m_globalPointer);
}
void InputRedirection::updatePointerAfterScreenChange()
{
if (screenContainsPos(m_globalPointer)) {
// pointer still on a screen
return;
}
// pointer no longer on a screen, reposition to closes screen
m_globalPointer = screens()->geometry(screens()->number(m_globalPointer.toPoint())).center();
emit globalPointerChanged(m_globalPointer);
}
} // namespace