diff --git a/QtScrcpy/CMakeLists.txt b/QtScrcpy/CMakeLists.txt
index 22aeb5d..ca4fc9c 100755
--- a/QtScrcpy/CMakeLists.txt
+++ b/QtScrcpy/CMakeLists.txt
@@ -105,6 +105,13 @@ set(QC_COMMON_SOURCES
 )
 source_group(common FILES ${QC_COMMON_SOURCES})
 
+# include
+set(QC_INCLUDE_SOURCES
+    include/QtScrcpyCore.h
+    include/QtScrcpyCoreDef.h
+)
+source_group(include FILES ${QC_INCLUDE_SOURCES})
+
 # device
 set(QC_DEVICE_SOURCES
     device/device.h
@@ -259,6 +266,7 @@ qt5_add_translation(QC_QM_FILES ${QC_TS_FILES})
 
 # all sources
 set(QC_PROJECT_SOURCES
+    ${QC_INCLUDE_SOURCES}
     ${QC_ADB_SOURCES}
     ${QC_COMMON_SOURCES}
     ${QC_DEVICE_SOURCES}
diff --git a/QtScrcpy/QtScrcpy.pro b/QtScrcpy/QtScrcpy.pro
index 9edbb44..48edf14 100644
--- a/QtScrcpy/QtScrcpy.pro
+++ b/QtScrcpy/QtScrcpy.pro
@@ -42,6 +42,7 @@ SOURCES += \
         main.cpp
 
 # 子工程
+include ($$PWD/include/include.pri)
 include ($$PWD/common/common.pri)
 include ($$PWD/adb/adb.pri)
 include ($$PWD/uibase/uibase.pri)
diff --git a/QtScrcpy/device/device.cpp b/QtScrcpy/device/device.cpp
index b64ba92..aa0685e 100644
--- a/QtScrcpy/device/device.cpp
+++ b/QtScrcpy/device/device.cpp
@@ -8,13 +8,14 @@
 #include "decoder.h"
 #include "device.h"
 #include "filehandler.h"
-#include "mousetap/mousetap.h"
 #include "recorder.h"
 #include "server.h"
 #include "stream.h"
 #include "videoform.h"
 
-Device::Device(DeviceParams params, QObject *parent) : QObject(parent), m_params(params)
+namespace qsc {
+
+Device::Device(DeviceParams params, QObject *parent) : IDevice(parent), m_params(params)
 {
     if (!params.display && m_params.recordFileName.trimmed().isEmpty()) {
         qCritical("not display must be recorded");
@@ -23,8 +24,8 @@ Device::Device(DeviceParams params, QObject *parent) : QObject(parent), m_params
 
     if (params.display) {
         m_decoder = new Decoder([this](int width, int height, uint8_t* dataY, uint8_t* dataU, uint8_t* dataV, int linesizeY, int linesizeU, int linesizeV) {
-            if (m_videoForm) {
-                m_videoForm->updateRender(width, height, dataY, dataU, dataV, linesizeY, linesizeU, linesizeV);
+            for (const auto& item : m_deviceObservers) {
+                item->onFrame(width, height, dataY, dataU, dataV, linesizeY, linesizeU, linesizeV);
             }
         }, this);
         m_fileHandler = new FileHandler(this);
@@ -35,8 +36,6 @@ Device::Device(DeviceParams params, QObject *parent) : QObject(parent), m_params
 
             return m_server->getControlSocket()->write(buffer.data(), buffer.length());
         }, params.gameScript, this);
-        m_videoForm = new VideoForm(params.framelessWindow, Config::getInstance().getSkin());
-        m_videoForm->setDevice(this);
     }
 
     m_stream = new Stream([this](quint8 *buf, qint32 bufSize) -> qint32 {
@@ -57,17 +56,27 @@ Device::Device(DeviceParams params, QObject *parent) : QObject(parent), m_params
 
 Device::~Device()
 {
-    disconnectDevice();
+    Device::disconnectDevice();
 }
 
-VideoForm *Device::getVideoForm()
+void Device::setUserData(void *data)
 {
-    return m_videoForm;
+    m_userData = data;
 }
 
-Server *Device::getServer()
+void *Device::getUserData()
 {
-    return m_server;
+    return m_userData;
+}
+
+void Device::registerDeviceObserver(DeviceObserver *observer)
+{
+    m_deviceObservers.insert(observer);
+}
+
+void Device::deRegisterDeviceObserver(DeviceObserver *observer)
+{
+    m_deviceObservers.erase(observer);
 }
 
 const QString &Device::getSerial()
@@ -75,15 +84,6 @@ const QString &Device::getSerial()
     return m_params.serial;
 }
 
-const QSize Device::frameSize()
-{
-    QSize size;
-    if (!m_videoForm) {
-        return size;
-    }
-    return m_videoForm->frameSize();
-}
-
 void Device::updateScript(QString script)
 {
     if (m_controller) {
@@ -119,34 +119,26 @@ void Device::showTouch(bool show)
     qInfo() << getSerial() << " show touch " << (show ? "enable" : "disable");
 }
 
+bool Device::isReversePort(quint16 port)
+{
+    if (m_server && m_server->isReverse() && port == m_server->getParams().localPort) {
+        return true;
+    }
+
+    return false;
+}
+
 void Device::initSignals()
 {
     if (m_controller) {
-        connect(m_controller, &Controller::grabCursor, this, &Device::grabCursor);
-    }
-    if (m_controller) {
-        /*
-        connect(this, &Device::postAppSwitch, m_controller, &Controller::onPostAppSwitch);
-        connect(this, &Device::postPower, m_controller, &Controller::onPostPower);
-        connect(this, &Device::postVolumeUp, m_controller, &Controller::onPostVolumeUp);
-        connect(this, &Device::postVolumeDown, m_controller, &Controller::onPostVolumeDown);
-        connect(this, &Device::postCopy, m_controller, &Controller::onCopy);
-        connect(this, &Device::postCut, m_controller, &Controller::onCut);
-        connect(this, &Device::setScreenPowerMode, m_controller, &Controller::onSetScreenPowerMode);
-        connect(this, &Device::expandNotificationPanel, m_controller, &Controller::onExpandNotificationPanel);
-        connect(this, &Device::collapsePanel, m_controller, &Controller::onCollapsePanel);
-        connect(this, &Device::mouseEvent, m_controller, &Controller::onMouseEvent);
-        connect(this, &Device::wheelEvent, m_controller, &Controller::onWheelEvent);
-        connect(this, &Device::keyEvent, m_controller, &Controller::onKeyEvent);
-
-        connect(this, &Device::postBackOrScreenOn, m_controller, &Controller::onPostBackOrScreenOn);
-        connect(this, &Device::setDeviceClipboard, m_controller, &Controller::onSetDeviceClipboard);
-        connect(this, &Device::clipboardPaste, m_controller, &Controller::onClipboardPaste);
-        connect(this, &Device::postTextInput, m_controller, &Controller::onPostTextInput);
-        */
+        connect(m_controller, &Controller::grabCursor, this, [this](bool grab){
+            for (const auto& item : m_deviceObservers) {
+                item->grabCursor(grab);
+            }
+        });
     }
     if (m_fileHandler) {
-        connect(m_fileHandler, &FileHandler::fileHandlerResult, this, [this](FileHandler::FILE_HANDLER_RESULT processResult, bool isApk) {
+        connect(m_fileHandler, &FileHandler::fileHandlerResult, this, [](FileHandler::FILE_HANDLER_RESULT processResult, bool isApk) {
             QString tipsType = "";
             if (isApk) {
                 tipsType = tr("install apk");
@@ -174,29 +166,6 @@ void Device::initSignals()
                 double diff = m_startTimeCount.elapsed() / 1000.0;
                 qInfo() << QString("server start finish in %1s").arg(diff).toStdString().c_str();
 
-
-                // update ui
-                if (m_videoForm) {
-                    // must be show before updateShowSize
-                    m_videoForm->show();
-                    QString name = Config::getInstance().getNickName(m_params.serial);
-                    if (name.isEmpty()) {
-                        name = Config::getInstance().getTitle();
-                    }
-                    m_videoForm->setWindowTitle(name + "-" + m_params.serial);
-                    m_videoForm->updateShowSize(size);
-
-                    bool deviceVer = size.height() > size.width();
-                    QRect rc = Config::getInstance().getRect(getSerial());
-                    bool rcVer = rc.height() > rc.width();
-                    // same width/height rate
-                    if (rc.isValid() && (deviceVer == rcVer)) {
-                        // mark: resize is for fix setGeometry magneticwidget bug
-                        m_videoForm->resize(rc.size());
-                        m_videoForm->setGeometry(rc);
-                    }
-                }
-
                 // init recorder
                 if (m_recorder) {
                     m_recorder->setFrameSize(size);
@@ -272,7 +241,11 @@ void Device::initSignals()
     }
 
     if (m_decoder) {
-        connect(m_decoder, &Decoder::updateFPS, m_videoForm, &VideoForm::updateFPS);
+        connect(m_decoder, &Decoder::updateFPS, this, [this](quint32 fps) {
+            for (const auto& item : m_deviceObservers) {
+                item->updateFPS(fps);
+            }
+        });
     }
 }
 
@@ -333,10 +306,6 @@ void Device::disconnectDevice()
         }
         m_recorder->close();
     }
-    if (m_videoForm) {
-        m_videoForm->close();
-        m_videoForm->deleteLater();
-    }
 
     emit deviceDisconnected(m_params.serial);
 }
@@ -413,11 +382,17 @@ void Device::postCut()
     m_controller->cut();
 }
 
-void Device::setScreenPowerMode(ControlMsg::ScreenPowerMode mode)
+void Device::setScreenPowerMode(bool open)
 {
     if (!m_controller) {
         return;
     }
+    ControlMsg::ScreenPowerMode mode{};
+    if (open) {
+        mode = ControlMsg::SPM_NORMAL;
+    } else {
+        mode = ControlMsg::SPM_OFF;
+    }
     m_controller->setScreenPowerMode(mode);
 }
 
@@ -517,15 +492,6 @@ void Device::keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize
     m_controller->keyEvent(from, frameSize, showSize);
 }
 
-void Device::grabCursor(bool grab)
-{
-    if (!m_videoForm) {
-        return;
-    }
-    QRect rc = m_videoForm->getGrabCursorRect();
-    MouseTap::getInstance()->enableMouseEventTap(rc, grab);
-}
-
 bool Device::isCurrentCustomKeymap()
 {
     if (!m_controller) {
@@ -562,3 +528,5 @@ bool Device::saveFrame(int width, int height, uint8_t* dataRGB32)
     qInfo() << "screenshot save to " << absFilePath;
     return true;
 }
+
+}
diff --git a/QtScrcpy/device/device.h b/QtScrcpy/device/device.h
index 0cd7547..feafdbf 100644
--- a/QtScrcpy/device/device.h
+++ b/QtScrcpy/device/device.h
@@ -1,10 +1,13 @@
 #ifndef DEVICE_H
 #define DEVICE_H
 
+#include <set>
 #include <QElapsedTimer>
 #include <QPointer>
 #include <QTime>
 
+#include "../include/QtScrcpyCore.h"
+
 #include "controlmsg.h"
 
 class QMouseEvent;
@@ -19,76 +22,59 @@ class Stream;
 class VideoForm;
 class Controller;
 struct AVFrame;
-class Device : public QObject
+
+namespace qsc {
+
+class Device : public IDevice
 {
     Q_OBJECT
 public:
-    struct DeviceParams
-    {
-        QString serverLocalPath = "";     // 本地安卓server路径
-        QString serverRemotePath = "";    // 要推送到远端设备的server路径
-        QString recordFileName = "";      // 视频录制文件名
-        QString recordPath = "";          // 视频保存路径
-        QString serial = "";              // 设备序列号
-        quint16 localPort = 27183;        // reverse时本地监听端口
-        quint16 maxSize = 720;            // 视频分辨率
-        quint32 bitRate = 2000000;        // 视频比特率
-        quint32 maxFps = 60;              // 视频最大帧率
-        bool closeScreen = false;         // 启动时自动息屏
-        bool useReverse = true;           // true:先使用adb reverse，失败后自动使用adb forward；false:直接使用adb forward
-        bool display = true;              // 是否显示画面（或者仅仅后台录制）
-        QString gameScript = "";          // 游戏映射脚本
-        bool renderExpiredFrames = false; // 是否渲染延迟视频帧
-        int lockVideoOrientation = -1;    // 是否锁定视频方向
-        bool stayAwake = false;           // 是否保持唤醒
-        bool framelessWindow = false;     // 是否无边框窗口
-    };
     explicit Device(DeviceParams params, QObject *parent = nullptr);
     virtual ~Device();
 
-    bool connectDevice();
-    void disconnectDevice();
-    void postGoBack();
-    void postGoHome();
-    void postGoMenu();
-    void postAppSwitch();
-    void postPower();
-    void postVolumeUp();
-    void postVolumeDown();
-    void postCopy();
-    void postCut();
-    void setScreenPowerMode(ControlMsg::ScreenPowerMode mode);
-    void expandNotificationPanel();
-    void collapsePanel();
-    void postBackOrScreenOn(bool down);
-    void postTextInput(QString &text);
-    void requestDeviceClipboard();
-    void setDeviceClipboard(bool pause = true);
-    void clipboardPaste();
-    void pushFileRequest(const QString &file, const QString &devicePath = "");
-    void installApkRequest(const QString &apkFile);
+    void setUserData(void* data) override;
+    void* getUserData() override;
+
+    void registerDeviceObserver(DeviceObserver* observer) override;
+    void deRegisterDeviceObserver(DeviceObserver* observer) override;
+
+    bool connectDevice() override;
+    void disconnectDevice() override;
 
     // key map
-    void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize);
-    void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize);
-    void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize);
-    
+    void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize) override;
+    void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize) override;
+    void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize) override;
 
-    void screenshot();
-    void showTouch(bool show);
-    void grabCursor(bool grab);
+    void postGoBack() override;
+    void postGoHome() override;
+    void postGoMenu() override;
+    void postAppSwitch() override;
+    void postPower() override;
+    void postVolumeUp() override;
+    void postVolumeDown() override;
+    void postCopy() override;
+    void postCut() override;
+    void setScreenPowerMode(bool open) override;
+    void expandNotificationPanel() override;
+    void collapsePanel() override;
+    void postBackOrScreenOn(bool down) override;
+    void postTextInput(QString &text) override;
+    void requestDeviceClipboard() override;
+    void setDeviceClipboard(bool pause = true) override;
+    void clipboardPaste() override;
+    void pushFileRequest(const QString &file, const QString &devicePath = "") override;
+    void installApkRequest(const QString &apkFile) override;
 
-    VideoForm *getVideoForm();
-    Server *getServer();
-    const QString &getSerial();
-    const QSize frameSize();
+    void screenshot() override;
+    void showTouch(bool show) override;
+    //void grabCursor(bool grab);
 
-    void updateScript(QString script);
-    bool isCurrentCustomKeymap();
+    bool isReversePort(quint16 port) override;
+    const QString &getSerial() override;
 
-signals:
-    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
-    void deviceDisconnected(QString serial);
+    void updateScript(QString script) override;
+    bool isCurrentCustomKeymap() override;
 
 private:
     void initSignals();
@@ -103,11 +89,12 @@ private:
     QPointer<Stream> m_stream;
     QPointer<Recorder> m_recorder = Q_NULLPTR;
 
-    // ui
-    QPointer<VideoForm> m_videoForm;
-
     QElapsedTimer m_startTimeCount;
     DeviceParams m_params;
+    std::set<DeviceObserver*> m_deviceObservers;
+    void* m_userData = nullptr;
 };
 
+}
+
 #endif // DEVICE_H
diff --git a/QtScrcpy/devicemanage/devicemanage.cpp b/QtScrcpy/devicemanage/devicemanage.cpp
index 5e53297..0abc803 100644
--- a/QtScrcpy/devicemanage/devicemanage.cpp
+++ b/QtScrcpy/devicemanage/devicemanage.cpp
@@ -6,14 +6,30 @@
 #include "devicemanage.h"
 #include "server.h"
 #include "videoform.h"
+#include "device.h"
+
+namespace qsc {
 
 #define DM_MAX_DEVICES_NUM 1000
 
-DeviceManage::DeviceManage(QObject *parent) : QObject(parent) {}
+IDeviceManage& IDeviceManage::getInstance() {
+    static DeviceManage dm;
+    return dm;
+}
+
+DeviceManage::DeviceManage() {}
 
 DeviceManage::~DeviceManage() {}
 
-bool DeviceManage::connectDevice(Device::DeviceParams params)
+QPointer<IDevice> DeviceManage::getDevice(const QString &serial)
+{
+    if (!m_devices.contains(serial)) {
+        return QPointer<IDevice>();
+    }
+    return m_devices[serial];
+}
+
+bool DeviceManage::connectDevice(qsc::DeviceParams params)
 {
     if (params.serial.trimmed().isEmpty()) {
         return false;
@@ -39,7 +55,7 @@ bool DeviceManage::connectDevice(Device::DeviceParams params)
         }
     }
     */
-    Device *device = new Device(params);
+    IDevice *device = new Device(params);
     connect(device, &Device::deviceConnected, this, &DeviceManage::onDeviceConnected);
     connect(device, &Device::deviceDisconnected, this, &DeviceManage::onDeviceDisconnected);
     if (!device->connectDevice()) {
@@ -56,7 +72,7 @@ bool DeviceManage::connectDevice(Device::DeviceParams params)
 void DeviceManage::updateScript(QString script)
 {
     m_script = script;
-    QMapIterator<QString, QPointer<Device>> i(m_devices);
+    QMapIterator<QString, QPointer<IDevice>> i(m_devices);
     while (i.hasNext()) {
         i.next();
         if (i.value()) {
@@ -65,36 +81,6 @@ void DeviceManage::updateScript(QString script)
     }
 }
 
-bool DeviceManage::staysOnTop(const QString &serial)
-{
-    if (!serial.isEmpty() && m_devices.contains(serial)) {
-        auto it = m_devices.find(serial);
-        if (!it->data()) {
-            return false;
-        }
-        if (!it->data()->getVideoForm()) {
-            return false;
-        }
-        it->data()->getVideoForm()->staysOnTop();
-    }
-    return true;
-}
-
-void DeviceManage::showFPS(const QString &serial, bool show)
-{
-    if (!serial.isEmpty() && m_devices.contains(serial)) {
-        auto it = m_devices.find(serial);
-        if (!it->data()) {
-            return;
-        }
-        if (!it->data()->getVideoForm()) {
-            return;
-        }
-        it->data()->getVideoForm()->showFPS(show);
-    }
-    return;
-}
-
 bool DeviceManage::disconnectDevice(const QString &serial)
 {
     bool ret = false;
@@ -110,7 +96,7 @@ bool DeviceManage::disconnectDevice(const QString &serial)
 
 void DeviceManage::disconnectAllDevice()
 {
-    QMapIterator<QString, QPointer<Device>> i(m_devices);
+    QMapIterator<QString, QPointer<IDevice>> i(m_devices);
     while (i.hasNext()) {
         i.next();
         if (i.value()) {
@@ -121,16 +107,16 @@ void DeviceManage::disconnectAllDevice()
 
 void DeviceManage::onDeviceConnected(bool success, const QString &serial, const QString &deviceName, const QSize &size)
 {
+    emit deviceConnected(success, serial, deviceName, size);
     if (!success) {
         removeDevice(serial);
     }
-    emit deviceConnected(success, serial, deviceName, size);
 }
 
 void DeviceManage::onDeviceDisconnected(QString serial)
 {
-    removeDevice(serial);
     emit deviceDisconnected(serial);
+    removeDevice(serial);
 }
 
 quint16 DeviceManage::getFreePort()
@@ -138,11 +124,11 @@ quint16 DeviceManage::getFreePort()
     quint16 port = m_localPortStart;
     while (port < m_localPortStart + DM_MAX_DEVICES_NUM) {
         bool used = false;
-        QMapIterator<QString, QPointer<Device>> i(m_devices);
+        QMapIterator<QString, QPointer<IDevice>> i(m_devices);
         while (i.hasNext()) {
             i.next();
             auto device = i.value();
-            if (device && device->getServer() && device->getServer()->isReverse() && port == device->getServer()->getParams().localPort) {
+            if (device && device->isReversePort(port)) {
                 used = true;
                 break;
             }
@@ -162,3 +148,5 @@ void DeviceManage::removeDevice(const QString &serial)
         m_devices.remove(serial);
     }
 }
+
+}
diff --git a/QtScrcpy/devicemanage/devicemanage.h b/QtScrcpy/devicemanage/devicemanage.h
index e466be0..ee9cfa4 100644
--- a/QtScrcpy/devicemanage/devicemanage.h
+++ b/QtScrcpy/devicemanage/devicemanage.h
@@ -4,26 +4,24 @@
 #include <QMap>
 #include <QPointer>
 
-#include "device.h"
+#include "../include/QtScrcpyCore.h"
 
-class DeviceManage : public QObject
+namespace qsc {
+
+class DeviceManage : public IDeviceManage
 {
     Q_OBJECT
 public:
-    explicit DeviceManage(QObject *parent = nullptr);
+    explicit DeviceManage();
     virtual ~DeviceManage();
 
-    bool connectDevice(Device::DeviceParams params);
-    bool disconnectDevice(const QString &serial);
-    void disconnectAllDevice();
+    virtual QPointer<IDevice> getDevice(const QString& serial) override;
 
-    void updateScript(QString script);
-    bool staysOnTop(const QString &serial);
-    void showFPS(const QString &serial, bool show);
+    bool connectDevice(qsc::DeviceParams params) override;
+    bool disconnectDevice(const QString &serial) override;
+    void disconnectAllDevice() override;
 
-signals:
-    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
-    void deviceDisconnected(QString serial);
+    void updateScript(QString script) override;
 
 protected slots:
     void onDeviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
@@ -34,9 +32,10 @@ private:
     void removeDevice(const QString& serial);
 
 private:
-    QMap<QString, QPointer<Device>> m_devices;
+    QMap<QString, QPointer<IDevice>> m_devices;
     quint16 m_localPortStart = 27183;
     QString m_script;
 };
 
+}
 #endif // DEVICEMANAGE_H
diff --git a/QtScrcpy/include/QtScrcpyCore.h b/QtScrcpy/include/QtScrcpyCore.h
new file mode 100644
index 0000000..2a68647
--- /dev/null
+++ b/QtScrcpy/include/QtScrcpyCore.h
@@ -0,0 +1,93 @@
+#pragma once
+#include <QMouseEvent>
+
+#include "QtScrcpyCoreDef.h"
+
+namespace qsc {
+
+class DeviceObserver {
+protected:
+    DeviceObserver() {
+
+    }
+    virtual ~DeviceObserver() {
+
+    }
+
+public:
+    virtual void onFrame(int width, int height, uint8_t* dataY, uint8_t* dataU, uint8_t* dataV, int linesizeY, int linesizeU, int linesizeV) {}
+    virtual void updateFPS(quint32 fps) {}
+    virtual void grabCursor(bool grab) {}
+};
+
+class IDevice : public QObject {
+    Q_OBJECT
+public:
+    IDevice(QObject *parent = nullptr) : QObject(parent) {}
+    virtual ~IDevice(){}
+
+signals:
+    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
+    void deviceDisconnected(QString serial);
+
+public:
+    virtual void setUserData(void* data) = 0;
+    virtual void* getUserData() = 0;
+    virtual void registerDeviceObserver(DeviceObserver* observer) = 0;
+    virtual void deRegisterDeviceObserver(DeviceObserver* observer) = 0;
+
+    virtual bool connectDevice() = 0;
+    virtual void disconnectDevice() = 0;
+
+    virtual void mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize) = 0;
+    virtual void wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize) = 0;
+    virtual void keyEvent(const QKeyEvent *from, const QSize &frameSize, const QSize &showSize) = 0;
+
+    virtual void postGoBack() = 0;
+    virtual void postGoHome() = 0;
+    virtual void postGoMenu() = 0;
+    virtual void postAppSwitch() = 0;
+    virtual void postPower() = 0;
+    virtual void postVolumeUp() = 0;
+    virtual void postVolumeDown() = 0;
+    virtual void postCopy() = 0;
+    virtual void postCut() = 0;
+    virtual void setScreenPowerMode(bool open) = 0;
+    virtual void expandNotificationPanel() = 0;
+    virtual void collapsePanel() = 0;
+    virtual void postBackOrScreenOn(bool down) = 0;
+    virtual void postTextInput(QString &text) = 0;
+    virtual void requestDeviceClipboard() = 0;
+    virtual void setDeviceClipboard(bool pause = true) = 0;
+    virtual void clipboardPaste() = 0;
+    virtual void pushFileRequest(const QString &file, const QString &devicePath = "") = 0;
+    virtual void installApkRequest(const QString &apkFile) = 0;
+
+    virtual void screenshot() = 0;
+    virtual void showTouch(bool show) = 0;
+
+    virtual bool isReversePort(quint16 port) = 0;
+    virtual const QString &getSerial() = 0;
+
+    virtual void updateScript(QString script) = 0;
+    virtual bool isCurrentCustomKeymap() = 0;
+};
+
+class IDeviceManage : public QObject {
+    Q_OBJECT
+public:
+    static IDeviceManage& getInstance();
+
+    virtual QPointer<IDevice> getDevice(const QString& serial) = 0;
+    virtual bool connectDevice(DeviceParams params) = 0;
+    virtual bool disconnectDevice(const QString &serial) = 0;
+    virtual void disconnectAllDevice() = 0;
+
+    virtual void updateScript(QString script) = 0;
+
+signals:
+    void deviceConnected(bool success, const QString& serial, const QString& deviceName, const QSize& size);
+    void deviceDisconnected(QString serial);
+};
+
+}
diff --git a/QtScrcpy/include/QtScrcpyCoreDef.h b/QtScrcpy/include/QtScrcpyCoreDef.h
new file mode 100644
index 0000000..8eb7abc
--- /dev/null
+++ b/QtScrcpy/include/QtScrcpyCoreDef.h
@@ -0,0 +1,26 @@
+#pragma once
+#include <QString>
+
+namespace qsc {
+
+struct DeviceParams {
+    QString serverLocalPath = "";     // 本地安卓server路径
+    QString serverRemotePath = "";    // 要推送到远端设备的server路径
+    QString recordFileName = "";      // 视频录制文件名
+    QString recordPath = "";          // 视频保存路径
+    QString serial = "";              // 设备序列号
+    quint16 localPort = 27183;        // reverse时本地监听端口
+    quint16 maxSize = 720;            // 视频分辨率
+    quint32 bitRate = 2000000;        // 视频比特率
+    quint32 maxFps = 60;              // 视频最大帧率
+    bool closeScreen = false;         // 启动时自动息屏
+    bool useReverse = true;           // true:先使用adb reverse，失败后自动使用adb forward；false:直接使用adb forward
+    bool display = true;              // 是否显示画面（或者仅仅后台录制）
+    QString gameScript = "";          // 游戏映射脚本
+    bool renderExpiredFrames = false; // 是否渲染延迟视频帧
+    int lockVideoOrientation = -1;    // 是否锁定视频方向
+    bool stayAwake = false;           // 是否保持唤醒
+    bool framelessWindow = false;     // 是否无边框窗口
+};
+    
+}
diff --git a/QtScrcpy/include/include.pri b/QtScrcpy/include/include.pri
new file mode 100644
index 0000000..9e3a6ec
--- /dev/null
+++ b/QtScrcpy/include/include.pri
@@ -0,0 +1,3 @@
+HEADERS += \
+    $$PWD/QtScrcpyCore.h \
+    $$PWD/QtScrcpyCoreDef.h
diff --git a/QtScrcpy/ui/dialog.cpp b/QtScrcpy/ui/dialog.cpp
index b1d36e9..9cb37af 100644
--- a/QtScrcpy/ui/dialog.cpp
+++ b/QtScrcpy/ui/dialog.cpp
@@ -95,15 +95,15 @@ Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog)
     });
     connect(m_hideIcon, &QSystemTrayIcon::activated, this, &Dialog::slotActivated);
 
-    connect(&m_deviceManage, &DeviceManage::deviceConnected, this, &Dialog::onDeviceConnected);
-    connect(&m_deviceManage, &DeviceManage::deviceDisconnected, this, &Dialog::onDeviceDisconnected);
+    connect(&qsc::IDeviceManage::getInstance(), &qsc::IDeviceManage::deviceConnected, this, &Dialog::onDeviceConnected);
+    connect(&qsc::IDeviceManage::getInstance(), &qsc::IDeviceManage::deviceDisconnected, this, &Dialog::onDeviceDisconnected);
 }
 
 Dialog::~Dialog()
 {
     qDebug() << "~Dialog()";
     updateBootConfig(false);
-    m_deviceManage.disconnectAllDevice();
+    qsc::IDeviceManage::getInstance().disconnectAllDevice();
     delete ui;
 }
 
@@ -280,7 +280,7 @@ void Dialog::on_startServerBtn_clicked()
 
     // this is ok that "native" toUshort is 0
     quint16 videoSize = ui->maxSizeBox->currentText().trimmed().toUShort();
-    Device::DeviceParams params;
+    qsc::DeviceParams params;
     params.serial = ui->serialBox->currentText().trimmed();
     params.maxSize = videoSize;
     params.bitRate = getBitRate();
@@ -298,17 +298,12 @@ void Dialog::on_startServerBtn_clicked()
     params.serverLocalPath = getServerPath();
     params.serverRemotePath = Config::getInstance().getServerPath();
 
-    m_deviceManage.connectDevice(params);
-
-    if (ui->alwaysTopCheck->isChecked()) {
-        m_deviceManage.staysOnTop(params.serial);
-    }
-    m_deviceManage.showFPS(params.serial, ui->fpsCheck->isChecked());
+    qsc::IDeviceManage::getInstance().connectDevice(params);
 }
 
 void Dialog::on_stopServerBtn_clicked()
 {
-    if (m_deviceManage.disconnectDevice(ui->serialBox->currentText().trimmed())) {
+    if (qsc::IDeviceManage::getInstance().disconnectDevice(ui->serialBox->currentText().trimmed())) {
         outLog("stop server");
     }
 }
@@ -423,12 +418,51 @@ void Dialog::getIPbyIp()
 
 void Dialog::onDeviceConnected(bool success, const QString &serial, const QString &deviceName, const QSize &size)
 {
+    if (!success) {
+        return;
+    }
+
+    auto videoForm = new VideoForm(ui->framelessCheck->isChecked(), Config::getInstance().getSkin());
+    videoForm->setSerial(serial);
+
+    qsc::IDeviceManage::getInstance().getDevice(serial)->setUserData(static_cast<void*>(videoForm));
+    qsc::IDeviceManage::getInstance().getDevice(serial)->registerDeviceObserver(videoForm);
+
+    videoForm->showFPS(ui->fpsCheck->isChecked());
+    if (ui->alwaysTopCheck->isChecked()) {
+        videoForm->staysOnTop();
+    }
+
+    // must be show before updateShowSize
+    videoForm->show();
+    QString name = Config::getInstance().getNickName(serial);
+    if (name.isEmpty()) {
+        name = Config::getInstance().getTitle();
+    }
+    videoForm->setWindowTitle(name + "-" + serial);
+    videoForm->updateShowSize(size);
+
+    bool deviceVer = size.height() > size.width();
+    QRect rc = Config::getInstance().getRect(serial);
+    bool rcVer = rc.height() > rc.width();
+    // same width/height rate
+    if (rc.isValid() && (deviceVer == rcVer)) {
+        // mark: resize is for fix setGeometry magneticwidget bug
+        videoForm->resize(rc.size());
+        videoForm->setGeometry(rc);
+    }
 
 }
 
 void Dialog::onDeviceDisconnected(QString serial)
 {
-
+    auto data = qsc::IDeviceManage::getInstance().getDevice(serial)->getUserData();
+    if (data) {
+        VideoForm* vf = static_cast<VideoForm*>(data);
+        qsc::IDeviceManage::getInstance().getDevice(serial)->deRegisterDeviceObserver(vf);
+        vf->close();
+        vf->deleteLater();
+    }
 }
 
 void Dialog::on_wirelessDisConnectBtn_clicked()
@@ -474,7 +508,7 @@ void Dialog::on_clearOut_clicked()
 
 void Dialog::on_stopAllServerBtn_clicked()
 {
-    m_deviceManage.disconnectAllDevice();
+    qsc::IDeviceManage::getInstance().disconnectAllDevice();
 }
 
 void Dialog::on_refreshGameScriptBtn_clicked()
@@ -497,7 +531,7 @@ void Dialog::on_refreshGameScriptBtn_clicked()
 
 void Dialog::on_applyScriptBtn_clicked()
 {
-    m_deviceManage.updateScript(getGameScript(ui->gameBox->currentText()));
+    qsc::IDeviceManage::getInstance().updateScript(getGameScript(ui->gameBox->currentText()));
 }
 
 void Dialog::on_recordScreenCheck_clicked(bool checked)
diff --git a/QtScrcpy/ui/dialog.h b/QtScrcpy/ui/dialog.h
index 9412f69..39044c1 100644
--- a/QtScrcpy/ui/dialog.h
+++ b/QtScrcpy/ui/dialog.h
@@ -10,7 +10,7 @@
 
 
 #include "adbprocess.h"
-#include "devicemanage.h"
+#include "../include/QtScrcpyCore.h"
 
 namespace Ui
 {
@@ -76,7 +76,6 @@ protected:
 private:
     Ui::Dialog *ui;
     AdbProcess m_adb;
-    DeviceManage m_deviceManage;
     QSystemTrayIcon *m_hideIcon;
     QMenu *m_menu;
     QAction *m_showWindow;
diff --git a/QtScrcpy/ui/toolform.cpp b/QtScrcpy/ui/toolform.cpp
index dcaaa0f..d9f1332 100644
--- a/QtScrcpy/ui/toolform.cpp
+++ b/QtScrcpy/ui/toolform.cpp
@@ -3,7 +3,6 @@
 #include <QMouseEvent>
 #include <QShowEvent>
 
-#include "device.h"
 #include "iconhelper.h"
 #include "toolform.h"
 #include "ui_toolform.h"
@@ -23,12 +22,9 @@ ToolForm::~ToolForm()
     delete ui;
 }
 
-void ToolForm::setDevice(Device *device)
+void ToolForm::setSerial(const QString &serial)
 {
-    if (!device) {
-        return;
-    }
-    m_device = device;
+    m_serial = serial;
 }
 
 void ToolForm::initStyle()
@@ -52,7 +48,8 @@ void ToolForm::initStyle()
 
 void ToolForm::updateGroupControl()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
 }
@@ -92,7 +89,8 @@ void ToolForm::hideEvent(QHideEvent *event)
 
 void ToolForm::on_fullScreenBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
 
@@ -101,105 +99,115 @@ void ToolForm::on_fullScreenBtn_clicked()
 
 void ToolForm::on_returnBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    m_device->postGoBack();
+    device->postGoBack();
 }
 
 void ToolForm::on_homeBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    m_device->postGoHome();
+    device->postGoHome();
 }
 
 void ToolForm::on_menuBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    m_device->postGoMenu();
+    device->postGoMenu();
 }
 
 void ToolForm::on_appSwitchBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->postAppSwitch();
+    emit device->postAppSwitch();
 }
 
 void ToolForm::on_powerBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->postPower();
+    emit device->postPower();
 }
 
 void ToolForm::on_screenShotBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    m_device->screenshot();
+    device->screenshot();
 }
 
 void ToolForm::on_volumeUpBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->postVolumeUp();
+    emit device->postVolumeUp();
 }
 
 void ToolForm::on_volumeDownBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->postVolumeDown();
+    emit device->postVolumeDown();
 }
 
 void ToolForm::on_closeScreenBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->setScreenPowerMode(ControlMsg::SPM_OFF);
+    emit device->setScreenPowerMode(false);
 }
 
 void ToolForm::on_expandNotifyBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->expandNotificationPanel();
+    emit device->expandNotificationPanel();
 }
 
 void ToolForm::on_touchBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
 
     m_showTouch = !m_showTouch;
-    m_device->showTouch(m_showTouch);
+    device->showTouch(m_showTouch);
 }
 
 void ToolForm::on_groupControlBtn_clicked()
 {
-    if (!m_device) {
-        return;
-    }
+
 }
 
 void ToolForm::on_openScreenBtn_clicked()
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->setScreenPowerMode(ControlMsg::SPM_NORMAL);
+    emit device->setScreenPowerMode(true);
 }
diff --git a/QtScrcpy/ui/toolform.h b/QtScrcpy/ui/toolform.h
index cbee061..908b190 100644
--- a/QtScrcpy/ui/toolform.h
+++ b/QtScrcpy/ui/toolform.h
@@ -4,7 +4,7 @@
 #include <QPointer>
 #include <QWidget>
 
-#include "device.h"
+#include "../include/QtScrcpyCore.h"
 #include "magneticwidget.h"
 
 namespace Ui
@@ -21,7 +21,7 @@ public:
     explicit ToolForm(QWidget *adsorbWidget, AdsorbPositions adsorbPos);
     ~ToolForm();
 
-    void setDevice(Device *device);
+    void setSerial(const QString& serial);
 
 protected:
     void mousePressEvent(QMouseEvent *event);
@@ -54,7 +54,7 @@ private:
 private:
     Ui::ToolForm *ui;
     QPoint m_dragPosition;
-    QPointer<Device> m_device;
+    QString m_serial;
     bool m_showTouch = false;
 };
 
diff --git a/QtScrcpy/ui/videoform.cpp b/QtScrcpy/ui/videoform.cpp
index 5cc6a92..f76c93f 100644
--- a/QtScrcpy/ui/videoform.cpp
+++ b/QtScrcpy/ui/videoform.cpp
@@ -15,10 +15,10 @@
 
 #include "config.h"
 #include "controller.h"
-#include "device.h"
 #include "iconhelper.h"
 #include "qyuvopenglwidget.h"
 #include "toolform.h"
+#include "mousetap/mousetap.h"
 #include "ui_videoform.h"
 #include "videoform.h"
 extern "C"
@@ -161,11 +161,16 @@ void VideoForm::updateRender(int width, int height, uint8_t* dataY, uint8_t* dat
     m_videoWidget->updateTextures(dataY, dataU, dataV, linesizeY, linesizeU, linesizeV);
 }
 
+void VideoForm::setSerial(const QString &serial)
+{
+    m_serial = serial;
+}
+
 void VideoForm::showToolForm(bool show)
 {
     if (!m_toolForm) {
         m_toolForm = new ToolForm(this, ToolForm::AP_OUTSIDE_RIGHT);
-        m_toolForm->setDevice(m_device);
+        m_toolForm->setSerial(m_serial);
     }
     m_toolForm->move(pos().x() + geometry().width(), pos().y() + 30);
     m_toolForm->setVisible(show);
@@ -190,7 +195,8 @@ void VideoForm::installShortcut()
     shortcut = new QShortcut(QKeySequence("Ctrl+f"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
         switchFullScreen();
@@ -210,138 +216,152 @@ void VideoForm::installShortcut()
     shortcut = new QShortcut(QKeySequence("Ctrl+h"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        m_device->postGoHome();
+        device->postGoHome();
     });
 
     // postGoBack
     shortcut = new QShortcut(QKeySequence("Ctrl+b"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        m_device->postGoBack();
+        device->postGoBack();
     });
 
     // postAppSwitch
     shortcut = new QShortcut(QKeySequence("Ctrl+s"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->postAppSwitch();
+        emit device->postAppSwitch();
     });
 
     // postGoMenu
     shortcut = new QShortcut(QKeySequence("Ctrl+m"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        m_device->postGoMenu();
+        device->postGoMenu();
     });
 
     // postVolumeUp
     shortcut = new QShortcut(QKeySequence("Ctrl+up"), this);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->postVolumeUp();
+        emit device->postVolumeUp();
     });
 
     // postVolumeDown
     shortcut = new QShortcut(QKeySequence("Ctrl+down"), this);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->postVolumeDown();
+        emit device->postVolumeDown();
     });
 
     // postPower
     shortcut = new QShortcut(QKeySequence("Ctrl+p"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->postPower();
+        emit device->postPower();
     });
 
     // setScreenPowerMode(ControlMsg::SPM_OFF)
     shortcut = new QShortcut(QKeySequence("Ctrl+o"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->setScreenPowerMode(ControlMsg::SPM_OFF);
+        emit device->setScreenPowerMode(ControlMsg::SPM_OFF);
     });
 
     // expandNotificationPanel
     shortcut = new QShortcut(QKeySequence("Ctrl+n"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->expandNotificationPanel();
+        emit device->expandNotificationPanel();
     });
 
     // collapsePanel
     shortcut = new QShortcut(QKeySequence("Ctrl+Shift+n"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->collapsePanel();
+        emit device->collapsePanel();
     });
 
     // copy
     shortcut = new QShortcut(QKeySequence("Ctrl+c"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->postCopy();
+        emit device->postCopy();
     });
 
     // cut
     shortcut = new QShortcut(QKeySequence("Ctrl+x"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->postCut();
+        emit device->postCut();
     });
 
     // clipboardPaste
     shortcut = new QShortcut(QKeySequence("Ctrl+v"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->setDeviceClipboard();
+        emit device->setDeviceClipboard();
     });
 
     // setDeviceClipboard
     shortcut = new QShortcut(QKeySequence("Ctrl+Shift+v"), this);
     shortcut->setAutoRepeat(false);
     connect(shortcut, &QShortcut::activated, this, [this]() {
-        if (!m_device) {
+        auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+        if (!device) {
             return;
         }
-        emit m_device->clipboardPaste();
+        emit device->clipboardPaste();
     });
 }
 
@@ -420,7 +440,7 @@ void VideoForm::updateShowSize(const QSize &newSize)
             showSize.setHeight(showSize.width() / m_widthHeightRatio);
         }
 
-        if (isFullScreen() && m_device) {
+        if (isFullScreen() && qsc::IDeviceManage::getInstance().getDevice(m_serial)) {
             switchFullScreen();
         }
 
@@ -501,6 +521,17 @@ void VideoForm::updateFPS(quint32 fps)
     m_fpsLabel->setText(QString("FPS:%1").arg(fps));
 }
 
+void VideoForm::grabCursor(bool grab)
+{
+    QRect rc = getGrabCursorRect();
+    MouseTap::getInstance()->enableMouseEventTap(rc, grab);
+}
+
+void VideoForm::onFrame(int width, int height, uint8_t *dataY, uint8_t *dataU, uint8_t *dataV, int linesizeY, int linesizeU, int linesizeV)
+{
+    updateRender(width, height, dataY, dataU, dataV, linesizeY, linesizeU, linesizeV);
+}
+
 void VideoForm::staysOnTop(bool top)
 {
     bool needShow = false;
@@ -516,33 +547,29 @@ void VideoForm::staysOnTop(bool top)
     }
 }
 
-void VideoForm::setDevice(Device *device)
-{
-    m_device = device;
-}
-
 void VideoForm::mousePressEvent(QMouseEvent *event)
 {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
     if (event->button() == Qt::MiddleButton) {
-        if (m_device && !m_device->isCurrentCustomKeymap()) {
-            m_device->postGoHome();
+        if (device && !device->isCurrentCustomKeymap()) {
+            device->postGoHome();
             return;
         }
     }
 
     if (event->button() == Qt::RightButton) {
-        if (m_device && !m_device->isCurrentCustomKeymap()) {
-            m_device->postGoBack();
+        if (device && !device->isCurrentCustomKeymap()) {
+            device->postGoBack();
             return;
         }
     }
 
     if (m_videoWidget->geometry().contains(event->pos())) {
-        if (!m_device) {
+        if (!device) {
             return;
         }
         event->setLocalPos(m_videoWidget->mapFrom(this, event->localPos().toPoint()));
-        emit m_device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
+        emit device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
 
         // debug keymap pos
         if (event->button() == Qt::LeftButton) {
@@ -561,8 +588,9 @@ void VideoForm::mousePressEvent(QMouseEvent *event)
 
 void VideoForm::mouseReleaseEvent(QMouseEvent *event)
 {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
     if (m_dragPosition.isNull()) {
-        if (!m_device) {
+        if (!device) {
             return;
         }
         event->setLocalPos(m_videoWidget->mapFrom(this, event->localPos().toPoint()));
@@ -581,7 +609,7 @@ void VideoForm::mouseReleaseEvent(QMouseEvent *event)
             local.setY(m_videoWidget->height());
         }
         event->setLocalPos(local);
-        emit m_device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
+        emit device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
     } else {
         m_dragPosition = QPoint(0, 0);
     }
@@ -589,12 +617,13 @@ void VideoForm::mouseReleaseEvent(QMouseEvent *event)
 
 void VideoForm::mouseMoveEvent(QMouseEvent *event)
 {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
     if (m_videoWidget->geometry().contains(event->pos())) {
-        if (!m_device) {
+        if (!device) {
             return;
         }
         event->setLocalPos(m_videoWidget->mapFrom(this, event->localPos().toPoint()));
-        emit m_device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
+        emit device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
     } else if (!m_dragPosition.isNull()) {
         if (event->buttons() & Qt::LeftButton) {
             move(event->globalPos() - m_dragPosition);
@@ -605,30 +634,32 @@ void VideoForm::mouseMoveEvent(QMouseEvent *event)
 
 void VideoForm::mouseDoubleClickEvent(QMouseEvent *event)
 {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
     if (event->button() == Qt::LeftButton && !m_videoWidget->geometry().contains(event->pos())) {
         if (!isMaximized()) {
             removeBlackRect();
         }
     }
 
-    if (event->button() == Qt::RightButton && m_device && !m_device->isCurrentCustomKeymap()) {
-        emit m_device->postBackOrScreenOn(event->type() == QEvent::MouseButtonPress);
+    if (event->button() == Qt::RightButton && device && !device->isCurrentCustomKeymap()) {
+        emit device->postBackOrScreenOn(event->type() == QEvent::MouseButtonPress);
     }
 
     if (m_videoWidget->geometry().contains(event->pos())) {
-        if (!m_device) {
+        if (!device) {
             return;
         }
         event->setLocalPos(m_videoWidget->mapFrom(this, event->localPos().toPoint()));
-        emit m_device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
+        emit device->mouseEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
     }
 }
 
 void VideoForm::wheelEvent(QWheelEvent *event)
 {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
 #if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
     if (m_videoWidget->geometry().contains(event->position().toPoint())) {
-        if (!m_device) {
+        if (!device) {
             return;
         }
         QPointF pos = m_videoWidget->mapFrom(this, event->position().toPoint());
@@ -636,7 +667,7 @@ void VideoForm::wheelEvent(QWheelEvent *event)
             pos, event->globalPosition(), event->pixelDelta(), event->angleDelta(), event->buttons(), event->modifiers(), event->phase(), event->inverted());
 #else
     if (m_videoWidget->geometry().contains(event->pos())) {
-        if (!m_device) {
+        if (!device) {
             return;
         }
         QPointF pos = m_videoWidget->mapFrom(this, event->pos());
@@ -645,28 +676,30 @@ void VideoForm::wheelEvent(QWheelEvent *event)
             pos, event->globalPosF(), event->pixelDelta(), event->angleDelta(), event->delta(), event->orientation(),
             event->buttons(), event->modifiers(), event->phase(), event->source(), event->inverted());
 #endif
-        emit m_device->wheelEvent(&wheelEvent, m_videoWidget->frameSize(), m_videoWidget->size());
+        emit device->wheelEvent(&wheelEvent, m_videoWidget->frameSize(), m_videoWidget->size());
     }
 }
 
 void VideoForm::keyPressEvent(QKeyEvent *event)
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
     if (Qt::Key_Escape == event->key() && !event->isAutoRepeat() && isFullScreen()) {
         switchFullScreen();
     }
 
-    emit m_device->keyEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
+    emit device->keyEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
 }
 
 void VideoForm::keyReleaseEvent(QKeyEvent *event)
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    emit m_device->keyEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
+    emit device->keyEvent(event, m_videoWidget->frameSize(), m_videoWidget->size());
 }
 
 void VideoForm::paintEvent(QPaintEvent *paint)
@@ -715,11 +748,12 @@ void VideoForm::resizeEvent(QResizeEvent *event)
 void VideoForm::closeEvent(QCloseEvent *event)
 {
     Q_UNUSED(event)
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
-    Config::getInstance().setRect(m_device->getSerial(), geometry());
-    m_device->disconnectDevice();
+    Config::getInstance().setRect(device->getSerial(), geometry());
+    device->disconnectDevice();
 }
 
 void VideoForm::dragEnterEvent(QDragEnterEvent *event)
@@ -739,7 +773,8 @@ void VideoForm::dragLeaveEvent(QDragLeaveEvent *event)
 
 void VideoForm::dropEvent(QDropEvent *event)
 {
-    if (!m_device) {
+    auto device = qsc::IDeviceManage::getInstance().getDevice(m_serial);
+    if (!device) {
         return;
     }
     const QMimeData *qm = event->mimeData();
@@ -755,9 +790,9 @@ void VideoForm::dropEvent(QDropEvent *event)
         }
 
         if (fileInfo.isFile() && fileInfo.suffix() == "apk") {
-            emit m_device->installApkRequest(file);
+            emit device->installApkRequest(file);
             continue;
         }
-        emit m_device->pushFileRequest(file, Config::getInstance().getPushFilePath() + fileInfo.fileName());
+        emit device->pushFileRequest(file, Config::getInstance().getPushFilePath() + fileInfo.fileName());
     }
 }
diff --git a/QtScrcpy/ui/videoform.h b/QtScrcpy/ui/videoform.h
index 96e53b8..e227e14 100644
--- a/QtScrcpy/ui/videoform.h
+++ b/QtScrcpy/ui/videoform.h
@@ -4,17 +4,18 @@
 #include <QPointer>
 #include <QWidget>
 
+#include "../include/QtScrcpyCore.h"
+
 namespace Ui
 {
     class videoForm;
 }
 
 class ToolForm;
-class Device;
 class FileHandler;
 class QYUVOpenGLWidget;
 class QLabel;
-class VideoForm : public QWidget
+class VideoForm : public QWidget, public qsc::DeviceObserver
 {
     Q_OBJECT
 public:
@@ -24,7 +25,7 @@ public:
     void staysOnTop(bool top = true);
     void updateShowSize(const QSize &newSize);
     void updateRender(int width, int height, uint8_t* dataY, uint8_t* dataU, uint8_t* dataV, int linesizeY, int linesizeU, int linesizeV);
-    void setDevice(Device *device);
+    void setSerial(const QString& serial);
     QRect getGrabCursorRect();
     const QSize &frameSize();
     void resizeSquare();
@@ -32,10 +33,12 @@ public:
     void showFPS(bool show);
     void switchFullScreen();
 
-public slots:
-    void updateFPS(quint32 fps);
-
 private:
+    void onFrame(int width, int height, uint8_t* dataY, uint8_t* dataU, uint8_t* dataV,
+                 int linesizeY, int linesizeU, int linesizeV) override;
+    void updateFPS(quint32 fps) override;
+    void grabCursor(bool grab) override;
+
     void updateStyleSheet(bool vertical);
     QMargins getMargins(bool vertical);
     void initUI();
@@ -78,9 +81,7 @@ private:
     float m_widthHeightRatio = 0.5f;
     bool m_skin = true;
     QPoint m_fullScreenBeforePos;
-
-    //outside member
-    QPointer<Device> m_device;
+    QString m_serial;
 };
 
 #endif // VIDEOFORM_H