chore: no longer rely on qpa x11 platform

fdoselectionmanager.cpp

@@ -32,7 +32,7 @@ using Util = tray::Util;
 
 FdoSelectionManager::FdoSelectionManager()
     : QObject()
-    , m_selectionOwner(new KSelectionOwner(Util::instance()->getAtomFromDisplay("_NET_SYSTEM_TRAY"), -1, this))
+    , m_selectionOwner(new KSelectionOwner(UTIL->getAtomFromDisplay("_NET_SYSTEM_TRAY"), UTIL->getX11Connection(), UTIL->getRootWindow(), this))
 {
     qDebug(SNIPROXY) << "starting";
 

main.cpp

@@ -10,6 +10,7 @@
 #include "fdoselectionmanager.h"
 
 #include "debug.h"
+#include "util.h"
 
 #ifdef None
 #ifndef FIXX11H_None
@@ -25,18 +26,22 @@ inline constexpr XID None = XNone;
 
 #include <KWindowSystem>
 
+using Util = tray::Util;
+
 int main(int argc, char **argv)
 {
     // the whole point of this is to interact with X, if we are in any other session, force trying to connect to X
     // if the QPA can't load xcb, this app is useless anyway.
-    qputenv("QT_QPA_PLATFORM", "xcb");
+    qputenv("QT_QPA_PLATFORM", "wayland");
+    qputenv("WAYLAND_DISPLAY", "dockplugin");
+    qputenv("QT_WAYLAND_SHELL_INTEGRATION", "plugin-shell");
 
     QGuiApplication::setDesktopSettingsAware(false);
     QCoreApplication::setAttribute(Qt::AA_DisableSessionManager);
 
     QGuiApplication app(argc, argv);
 
-    if (!KWindowSystem::isPlatformX11()) {
+    if (!UTIL->isXAvaliable()) {
         qFatal("xembed-traymanager-proxy requires X11. Aborting");
     }
 

util.cpp

@@ -4,6 +4,8 @@
 
 #include <QDebug>
 
+#include "debug.h"
+
 #include "util.h"
 #include "xcbthread.h"
 
@@ -12,6 +14,9 @@
 #include <QBitmap>
 #include <QFileInfo>
 #include <QtGlobal>
+#include <QSocketNotifier>
+#include <QCoreApplication>
+#include <QAbstractEventDispatcher>
 
 #include <X11/Xlib.h>
 
@@ -37,7 +42,29 @@ Util* Util::instance()
     return _instance;
 }
 
+void Util::dispatchEvents(DispatchEventsMode mode)
+{
+    xcb_connection_t *connection = m_x11connection;
+    if (!connection) {
+        qCWarning(SNIPROXY, "Attempting to dispatch X11 events with no connection");
+        return;
+    }
+
+    auto pollEventFunc = mode == DispatchEventsMode::Poll ? xcb_poll_for_event : xcb_poll_for_queued_event;
+
+    while (xcb_generic_event_t *event = pollEventFunc(connection)) {
+        qintptr result = 0;
+
+        QAbstractEventDispatcher *dispatcher = QCoreApplication::eventDispatcher();
+        dispatcher->filterNativeEvent(QByteArrayLiteral("xcb_generic_event_t"), event, &result);
+        free(event);
+    }
+
+    xcb_flush(connection);
+}
+
 Util::Util()
+    : QObject()
 {
     m_x11connection = xcb_connect(nullptr, nullptr);
     m_display = XOpenDisplay("");
@@ -51,8 +78,20 @@ Util::Util()
     m_rootWindow = screen->root;
 
     xcb_ewmh_init_atoms_replies(&m_ewmh, xcb_ewmh_init_atoms(m_x11connection, &m_ewmh), nullptr);
-    m_xcbThread = new XcbThread(m_x11connection);
-    m_xcbThread->start();
+
+    const int fd = xcb_get_file_descriptor(m_x11connection);
+    QSocketNotifier * qfd = new QSocketNotifier(fd, QSocketNotifier::Read, this);
+    connect(qfd, &QSocketNotifier::activated, this, [this](){
+        dispatchEvents(DispatchEventsMode::Poll);
+    });
+
+    QAbstractEventDispatcher *dispatcher = QCoreApplication::eventDispatcher();
+    connect(dispatcher, &QAbstractEventDispatcher::aboutToBlock, this, [this]() {
+        dispatchEvents(DispatchEventsMode::EventQueue);
+    });
+    connect(dispatcher, &QAbstractEventDispatcher::awake, this, [this]() {
+        dispatchEvents(DispatchEventsMode::EventQueue);
+    });
 }
 
 Util::~Util()

util.h

@@ -8,6 +8,7 @@
 #include <QImage>
 #include <QSharedPointer>
 #include <QSet>
+#include <QObject>
 
 #include <cstdint>
 #include <sys/types.h>
@@ -21,7 +22,7 @@ struct _XDisplay;
 namespace tray {
 #define UTIL Util::instance()
 class XcbThread;
-class Util
+class Util : public QObject
 {
 
 public:
@@ -59,6 +60,12 @@ private:
     Util(const Util&) = delete;
     Util& operator=(const Util&) = delete;
 
+    enum class DispatchEventsMode {
+        Poll,
+        EventQueue
+    };
+    void dispatchEvents(DispatchEventsMode mode);
+
     bool isTransparentImage(const QImage &image);
 
     QImage convertFromNative(xcb_image_t* image);