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kdeconnect-kde/plugins/mousepad/waylandremoteinput.cpp
Aleix Pol 851e456210 Use the RemoteDesktop portal to input from wayland 
Cross-desktop approach to moving the cursor remotely on wayland. Should
work on X11 too, so we can consider drop the other one as well.

It adds support for receiving full text as well, which didn't use to be
possible.
2023-01-16 18:14:47 +01:00

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/**
* SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
* SPDX-FileCopyrightText: 2020 Aleix Pol Gonzalez <aleixpol@kde.org>
*
* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "waylandremoteinput.h"
#include <QDebug>
#include <QSizeF>
#include <KLocalizedString>
#include <QDBusPendingCallWatcher>
#include <linux/input.h>
#include <xkbcommon/xkbcommon.h>
namespace
{
// Translation table to keep in sync within all the implementations
int SpecialKeysMap[] = {
0, // Invalid
KEY_BACKSPACE, // 1
KEY_TAB, // 2
KEY_LINEFEED, // 3
KEY_LEFT, // 4
KEY_UP, // 5
KEY_RIGHT, // 6
KEY_DOWN, // 7
KEY_PAGEUP, // 8
KEY_PAGEDOWN, // 9
KEY_HOME, // 10
KEY_END, // 11
KEY_ENTER, // 12
KEY_DELETE, // 13
KEY_ESC, // 14
KEY_SYSRQ, // 15
KEY_SCROLLLOCK, // 16
0, // 17
0, // 18
0, // 19
0, // 20
KEY_F1, // 21
KEY_F2, // 22
KEY_F3, // 23
KEY_F4, // 24
KEY_F5, // 25
KEY_F6, // 26
KEY_F7, // 27
KEY_F8, // 28
KEY_F9, // 29
KEY_F10, // 30
KEY_F11, // 31
KEY_F12, // 32
};
}
Q_GLOBAL_STATIC(RemoteDesktopSession, s_session);
RemoteDesktopSession::RemoteDesktopSession()
: iface(new OrgFreedesktopPortalRemoteDesktopInterface(QLatin1String("org.freedesktop.portal.Desktop"),
QLatin1String("/org/freedesktop/portal/desktop"),
QDBusConnection::sessionBus(),
this))
{
}
void RemoteDesktopSession::createSession()
{
if (isValid()) {
qCDebug(KDECONNECT_PLUGIN_MOUSEPAD) << "pass, already created";
return;
}
m_connecting = true;
// create session
const auto handleToken = QStringLiteral("kdeconnect%1").arg(QRandomGenerator::global()->generate());
const auto sessionParameters = QVariantMap{{QLatin1String("session_handle_token"), handleToken}, {QLatin1String("handle_token"), handleToken}};
auto sessionReply = iface->CreateSession(sessionParameters);
QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(sessionReply);
connect(watcher, &QDBusPendingCallWatcher::finished, this, [this, sessionReply](QDBusPendingCallWatcher *self) {
self->deleteLater();
if (sessionReply.isError()) {
qCWarning(KDECONNECT_PLUGIN_MOUSEPAD) << "Could not create the remote control session" << sessionReply.error();
m_connecting = false;
return;
}
bool b = QDBusConnection::sessionBus().connect(QString(),
sessionReply.value().path(),
QLatin1String("org.freedesktop.portal.Request"),
QLatin1String("Response"),
this,
SLOT(handleXdpSessionCreated(uint, QVariantMap)));
Q_ASSERT(b);
qCDebug(KDECONNECT_PLUGIN_MOUSEPAD) << "authenticating" << sessionReply.value().path();
});
}
void RemoteDesktopSession::handleXdpSessionCreated(uint code, const QVariantMap &results)
{
if (code != 0) {
qCWarning(KDECONNECT_PLUGIN_MOUSEPAD) << "Failed to create session with code" << code << results;
return;
}
m_connecting = false;
m_xdpPath = QDBusObjectPath(results.value(QLatin1String("session_handle")).toString());
const QVariantMap startParameters = {
{QLatin1String("handle_token"), QStringLiteral("kdeconnect%1").arg(QRandomGenerator::global()->generate())},
{QStringLiteral("types"), QVariant::fromValue<uint>(7)}, // request all (KeyBoard, Pointer, TouchScreen)
};
QDBusConnection::sessionBus().connect(QString(),
m_xdpPath.path(),
QLatin1String("org.freedesktop.portal.Session"),
QLatin1String("Closed"),
this,
SLOT(handleXdpSessionFinished(uint, QVariantMap)));
auto reply = iface->SelectDevices(m_xdpPath, startParameters);
QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(reply);
connect(watcher, &QDBusPendingCallWatcher::finished, this, [this, reply](QDBusPendingCallWatcher *self) {
self->deleteLater();
if (reply.isError()) {
qCWarning(KDECONNECT_PLUGIN_MOUSEPAD) << "Could not start the remote control session" << reply.error();
m_connecting = false;
return;
}
bool b = QDBusConnection::sessionBus().connect(QString(),
reply.value().path(),
QLatin1String("org.freedesktop.portal.Request"),
QLatin1String("Response"),
this,
SLOT(handleXdpSessionConfigured(uint, QVariantMap)));
Q_ASSERT(b);
qCDebug(KDECONNECT_PLUGIN_MOUSEPAD) << "configuring" << reply.value().path();
});
}
void RemoteDesktopSession::handleXdpSessionConfigured(uint code, const QVariantMap &results)
{
if (code != 0) {
qCWarning(KDECONNECT_PLUGIN_MOUSEPAD) << "Failed to configure session with code" << code << results;
m_connecting = false;
return;
}
const QVariantMap startParameters = {
{QLatin1String("handle_token"), QStringLiteral("kdeconnect%1").arg(QRandomGenerator::global()->generate())},
};
auto reply = iface->Start(m_xdpPath, {}, startParameters);
QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(reply);
connect(watcher, &QDBusPendingCallWatcher::finished, this, [this, reply](QDBusPendingCallWatcher *self) {
self->deleteLater();
if (reply.isError()) {
qCWarning(KDECONNECT_PLUGIN_MOUSEPAD) << "Could not start the remote control session" << reply.error();
m_connecting = false;
}
});
}
void RemoteDesktopSession::handleXdpSessionFinished(uint /*code*/, const QVariantMap & /*results*/)
{
m_xdpPath = {};
}
WaylandRemoteInput::WaylandRemoteInput(QObject *parent)
: AbstractRemoteInput(parent)
{
}
WaylandRemoteInput::~WaylandRemoteInput()
{
}
bool WaylandRemoteInput::handlePacket(const NetworkPacket &np)
{
if (!s_session->isValid()) {
qCWarning(KDECONNECT_PLUGIN_MOUSEPAD) << "Unable to handle remote input. RemoteDesktop portal not authenticated";
s_session->createSession();
return false;
}
const float dx = np.get<float>(QStringLiteral("dx"), 0);
const float dy = np.get<float>(QStringLiteral("dy"), 0);
const bool isSingleClick = np.get<bool>(QStringLiteral("singleclick"), false);
const bool isDoubleClick = np.get<bool>(QStringLiteral("doubleclick"), false);
const bool isMiddleClick = np.get<bool>(QStringLiteral("middleclick"), false);
const bool isRightClick = np.get<bool>(QStringLiteral("rightclick"), false);
const bool isSingleHold = np.get<bool>(QStringLiteral("singlehold"), false);
const bool isSingleRelease = np.get<bool>(QStringLiteral("singlerelease"), false);
const bool isScroll = np.get<bool>(QStringLiteral("scroll"), false);
const QString key = np.get<QString>(QStringLiteral("key"), QLatin1String(""));
const int specialKey = np.get<int>(QStringLiteral("specialKey"), 0);
if (isSingleClick || isDoubleClick || isMiddleClick || isRightClick || isSingleHold || isSingleRelease || isScroll || !key.isEmpty() || specialKey) {
if (isSingleClick) {
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 1);
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 0);
} else if (isDoubleClick) {
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 1);
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 0);
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 1);
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 0);
} else if (isMiddleClick) {
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_MIDDLE, 1);
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_MIDDLE, 0);
} else if (isRightClick) {
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_RIGHT, 1);
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_RIGHT, 0);
} else if (isSingleHold) {
// For drag'n drop
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 1);
} else if (isSingleRelease) {
// For drag'n drop. NEVER USED (release is done by tapping, which actually triggers a isSingleClick). Kept here for future-proofness.
s_session->iface->NotifyPointerButton(s_session->m_xdpPath, {}, BTN_LEFT, 0);
} else if (isScroll) {
s_session->iface->NotifyPointerAxis(s_session->m_xdpPath, {}, dx, dy);
} else if (specialKey) {
s_session->iface->NotifyKeyboardKeycode(s_session->m_xdpPath, {}, SpecialKeysMap[specialKey], 1);
s_session->iface->NotifyKeyboardKeycode(s_session->m_xdpPath, {}, SpecialKeysMap[specialKey], 0);
} else if (!key.isEmpty()) {
for (const QChar character : key) {
const auto keysym = xkb_utf32_to_keysym(character.unicode());
if (keysym != XKB_KEY_NoSymbol) {
s_session->iface->NotifyKeyboardKeysym(s_session->m_xdpPath, {}, keysym, 1).waitForFinished();
s_session->iface->NotifyKeyboardKeysym(s_session->m_xdpPath, {}, keysym, 0).waitForFinished();
} else {
qCDebug(KDECONNECT_PLUGIN_MOUSEPAD) << "Cannot send character" << character;
}
}
}
} else { // Is a mouse move event
s_session->iface->NotifyPointerMotion(s_session->m_xdpPath, {}, dx, dy);
}
return true;
}
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