feat: apply libinput accel config for pointer/touchpad devices

Add libinput accel speed/profile dconfig options and wire them into input
device setup. Apply settings on device hotplug and config changes, and
reuse a helper to update all current devices.

Log: apply libinput accel config
Influence: pointer, touchpad, virtual input

Author: zorowk

misc/dconfig/org.deepin.dde.treeland.user.json

@@ -443,6 +443,17 @@
             "permissions": "readonly",
             "visibility": "private"
         },
+        "inputAccelProfile": {
+            "value": 2,
+            "serial": 0,
+            "flags": ["global"],
+            "name": "Libinput Accel Profile",
+            "name[zh_CN]": "Libinput 加速曲线",
+            "description": "Pointer acceleration profile, enum value of libinput_config_accel_profile",
+            "description[zh_CN]": "指针加速曲线，对应 libinput_config_accel_profile 枚举值",
+            "permissions": "readwrite",
+            "visibility": "public"
+        },
         "wallpaperConfig": {
             "value": "",
             "serial": 0,

src/input/inputdevice.cpp

@@ -1,8 +1,10 @@
-// Copyright (C) 2024-2025 UnionTech Software Technology Co., Ltd.
+// Copyright (C) 2024-2026 UnionTech Software Technology Co., Ltd.
 // SPDX-License-Identifier: Apache-2.0 OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#include "helper.h"
 #include "inputdevice.h"
 #include "common/treelandlogging.h"
+#include "treelanduserconfig.hpp"
 
 #include <winputdevice.h>
 
@@ -13,6 +15,7 @@
 #include <QLoggingCategory>
 #include <QPointer>
 
+
 QW_USE_NAMESPACE
 
 #define MIN_SWIPE_FINGERS 3
@@ -351,14 +354,32 @@ InputDevice *InputDevice::instance()
     return m_instance;
 }
 
-bool InputDevice::initTouchPad(WInputDevice *device)
+void InputDevice::initDevice(WInputDevice *device)
 {
-    if (device->handle()->is_libinput()
-        && device->qtDevice()->type() == QInputDevice::DeviceType::TouchPad) {
+    if (!device || !device->handle() || !device->handle()->is_libinput()) {
+        return;
+    }
+
+    auto deviceType = device->qtDevice()->type();
+    if (deviceType == QInputDevice::DeviceType::TouchPad) {
         configTapEnabled(libinput_device_handle(device->handle()), LIBINPUT_CONFIG_TAP_ENABLED);
-        return true;
     }
-    return false;
+
+    if (deviceType == QInputDevice::DeviceType::TouchPad ||
+        deviceType == QInputDevice::DeviceType::Mouse) {
+        auto config = Helper::instance()->config();
+        auto applyAccelProfile = [device, config]() {
+            auto deviceType = device->qtDevice()->type();
+            if (deviceType == QInputDevice::DeviceType::Mouse ||
+                deviceType == QInputDevice::DeviceType::TouchPad) {
+                configAccelProfile(libinput_device_handle(device->handle()),
+                                   static_cast<libinput_config_accel_profile>(config->inputAccelProfile()));
+            }
+        };
+
+        connect(config, &TreelandUserConfig::inputAccelProfileChanged, this, applyAccelProfile);
+        connect(config, &TreelandUserConfig::configInitializeSucceed, this, applyAccelProfile);
+    }
 }
 
 [[maybe_unused]] SwipeGesture* InputDevice::registerTouchpadSwipe(const SwipeFeedBack &feed_back)

src/input/inputdevice.h

@@ -1,4 +1,4 @@
-// Copyright (C) 2024-2025 UnionTech Software Technology Co., Ltd.
+// Copyright (C) 2024-2026 UnionTech Software Technology Co., Ltd.
 // SPDX-License-Identifier: Apache-2.0 OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
 #pragma once
@@ -40,7 +40,7 @@ class InputDevice : public QObject
     InputDevice(const InputDevice &) = delete;
     InputDevice &operator=(const InputDevice &) = delete;
 
-    bool initTouchPad(WInputDevice *device);
+    void initDevice(WInputDevice *device);
 
     SwipeGesture* registerTouchpadSwipe(const SwipeFeedBack &feed_back);
     HoldGesture* registerTouchpadHold(const HoldFeedBack &feed);

src/seat/helper.cpp

@@ -1187,7 +1187,7 @@ void Helper::init(Treeland::Treeland *treeland)
     m_backend = m_server->attach<WBackend>();
     connect(m_backend, &WBackend::inputAdded, this, [this](WInputDevice *device) {
         m_seat->attachInputDevice(device);
-        InputDevice::instance()->initTouchPad(device);
+        InputDevice::instance()->initDevice(device);
     });
 
     connect(m_backend, &WBackend::inputRemoved, this, [this](WInputDevice *device) {