Lookup TabletV2Interface by sysname

This gets rid of some libinput specific logic and makes the code more
generic.

src/backends/libinput/connection.cpp

@@ -245,7 +245,7 @@ KWin::TabletToolId createTabletId(libinput_tablet_tool *tool, Device *dev)
     if (libinput_tablet_tool_has_wheel(tool)) {
         capabilities << InputRedirection::Wheel;
     }
-    return {dev->sysName(), toolType, capabilities, serial, toolId, dev->groupUserData(), dev->name()};
+    return {dev->sysName(), toolType, capabilities, serial, toolId, dev->name()};
 }
 
 void Connection::processEvents()

src/backends/libinput/device.cpp

@@ -542,12 +542,6 @@ int Device::ringsCount() const
     return libinput_device_tablet_pad_get_num_rings(m_device);
 }
 
-void *Device::groupUserData() const
-{
-    auto deviceGroup = libinput_device_get_device_group(m_device);
-    return libinput_device_group_get_user_data(deviceGroup);
-}
-
 #define CONFIG(method, condition, function, variable, key)                                        \
     void Device::method(bool set)                                                                 \
     {                                                                                             \

src/backends/libinput/device.h

@@ -632,8 +632,6 @@ public:
     int stripsCount() const;
     int ringsCount() const;
 
-    void *groupUserData() const;
-
     Output *output() const;
     void setOutput(Output *output);
 

src/input.cpp

@@ -2043,7 +2043,8 @@ public:
 
         // NOTE: tablet will be nullptr as the device is removed (see ::removeDevice) but events from the tool
         // may still happen (e.g. Release or ProximityOut events)
-        auto tablet = static_cast<TabletV2Interface *>(event->toolId().m_deviceGroupData);
+        TabletSeatV2Interface *seat = waylandServer()->tabletManagerV2()->seat(waylandServer()->seat());
+        auto tablet = seat->tabletByName(event->device()->sysName());
 
         Window *window = input()->findToplevel(event->globalPosF());
         if (!window || !window->surface()) {

src/input_event.h

@@ -202,7 +202,6 @@ public:
     QList<InputRedirection::Capability> m_capabilities;
     quint64 m_serialId;
     quint64 m_uniqueId;
-    void *m_deviceGroupData;
     QString m_name;
 };
 

src/wayland/tablet_v2.cpp

@@ -918,6 +918,12 @@ TabletToolV2Interface *TabletSeatV2Interface::toolByHardwareSerial(quint64 hardw
     return nullptr;
 }
 
+TabletV2Interface *TabletSeatV2Interface::tabletByName(const QString &name) const
+{
+    Q_ASSERT(d->m_tablets.contains(name));
+    return d->m_tablets.value(name);
+}
+
 TabletPadV2Interface *TabletSeatV2Interface::padByName(const QString &name) const
 {
     Q_ASSERT(d->m_pads.contains(name));

src/wayland/tablet_v2.h

@@ -290,6 +290,7 @@ public:
 
     TabletToolV2Interface *toolByHardwareId(quint64 hardwareId) const;
     TabletToolV2Interface *toolByHardwareSerial(quint64 hardwareSerial, TabletToolV2Interface::Type type) const;
+    TabletV2Interface *tabletByName(const QString &sysname) const;
     TabletPadV2Interface *padByName(const QString &sysname) const;
 
     void removeDevice(const QString &sysname);