diff --git a/src/meshgenerator.cpp b/src/meshgenerator.cpp
index 52179dae..08db948a 100644
--- a/src/meshgenerator.cpp
+++ b/src/meshgenerator.cpp
@@ -184,9 +184,14 @@ void MeshGenerator::process()
     std::map<QString, int> partMeshMap;
     std::vector<int> meshIds;
     for (const auto &partIdIt: m_snapshot->partIdList) {
+        const auto part = m_snapshot->parts.find(partIdIt);
         int bmeshId = partBmeshMap[partIdIt];
         int meshId = meshlite_bmesh_generate_mesh(meshliteContext, bmeshId, 0);
-        qDebug() << "m_requirePartPreviewMap.find:" << partIdIt;
+        if (isTrueValueString(part->second["subdived"])) {
+            int subdivedMeshId = meshlite_subdivide(meshliteContext, meshId);
+            if (subdivedMeshId > 0)
+                meshId = subdivedMeshId;
+        }
         if (m_requirePartPreviewMap.find(partIdIt) != m_requirePartPreviewMap.end()) {
             ModelOfflineRender *render = m_partPreviewRenderMap[partIdIt];
             int trimedMeshId = meshlite_trim(meshliteContext, meshId, 1);
diff --git a/src/skeletondocument.cpp b/src/skeletondocument.cpp
index c24d9a30..f7b72ebf 100644
--- a/src/skeletondocument.cpp
+++ b/src/skeletondocument.cpp
@@ -26,14 +26,6 @@ void SkeletonDocument::removePart(QUuid partId)
 {
 }
 
-void SkeletonDocument::showPart(QUuid partId)
-{
-}
-
-void SkeletonDocument::hidePart(QUuid partId)
-{
-}
-
 void SkeletonDocument::removeEdge(QUuid edgeId)
 {
     const SkeletonEdge *edge = findEdge(edgeId);
@@ -41,6 +33,8 @@ void SkeletonDocument::removeEdge(QUuid edgeId)
         qDebug() << "Find edge failed:" << edgeId;
         return;
     }
+    if (isPartLocked(edge->partId))
+        return;
     const SkeletonPart *oldPart = findPart(edge->partId);
     if (nullptr == oldPart) {
         qDebug() << "Find part failed:" << edge->partId;
@@ -100,6 +94,8 @@ void SkeletonDocument::removeNode(QUuid nodeId)
         qDebug() << "Find node failed:" << nodeId;
         return;
     }
+    if (isPartLocked(node->partId))
+        return;
     const SkeletonPart *oldPart = findPart(node->partId);
     if (nullptr == oldPart) {
         qDebug() << "Find part failed:" << node->partId;
@@ -178,6 +174,8 @@ void SkeletonDocument::addNode(float x, float y, float z, float radius, QUuid fr
             return;
         }
         partId = fromNode->partId;
+        if (isPartLocked(partId))
+            return;
     }
     SkeletonNode node;
     node.partId = partId;
@@ -245,12 +243,18 @@ void SkeletonDocument::addEdge(QUuid fromNodeId, QUuid toNodeId)
         return;
     }
     
+    if (isPartLocked(fromNode->partId))
+        return;
+    
     toNode = findNode(toNodeId);
     if (nullptr == toNode) {
         qDebug() << "Find node failed:" << toNodeId;
         return;
     }
     
+    if (isPartLocked(toNode->partId))
+        return;
+    
     QUuid toPartId = toNode->partId;
     
     auto fromPart = partMap.find(fromNode->partId);
@@ -335,11 +339,23 @@ void SkeletonDocument::scaleNodeByAddRadius(QUuid nodeId, float amount)
         qDebug() << "Find node failed:" << nodeId;
         return;
     }
+    if (isPartLocked(it->second.partId))
+        return;
     it->second.radius += amount;
     emit nodeRadiusChanged(nodeId);
     emit skeletonChanged();
 }
 
+bool SkeletonDocument::isPartLocked(QUuid partId)
+{
+    const SkeletonPart *part = findPart(partId);
+    if (nullptr == part) {
+        qDebug() << "Find part failed:" << partId;
+        return true;
+    }
+    return part->locked;
+}
+
 void SkeletonDocument::moveNodeBy(QUuid nodeId, float x, float y, float z)
 {
     auto it = nodeMap.find(nodeId);
@@ -347,6 +363,8 @@ void SkeletonDocument::moveNodeBy(QUuid nodeId, float x, float y, float z)
         qDebug() << "Find node failed:" << nodeId;
         return;
     }
+    if (isPartLocked(it->second.partId))
+        return;
     it->second.x += x;
     it->second.y += y;
     it->second.z += z;
@@ -361,6 +379,8 @@ void SkeletonDocument::setNodeOrigin(QUuid nodeId, float x, float y, float z)
         qDebug() << "Find node failed:" << nodeId;
         return;
     }
+    if (isPartLocked(it->second.partId))
+        return;
     it->second.x = x;
     it->second.y = y;
     it->second.z = z;
@@ -375,6 +395,8 @@ void SkeletonDocument::setNodeRadius(QUuid nodeId, float radius)
         qDebug() << "Find node failed:" << nodeId;
         return;
     }
+    if (isPartLocked(it->second.partId))
+        return;
     it->second.radius = radius;
     emit nodeRadiusChanged(nodeId);
     emit skeletonChanged();
@@ -479,6 +501,8 @@ void SkeletonDocument::toSnapshot(SkeletonSnapshot *snapshot)
         std::map<QString, QString> part;
         part["id"] = partIt.second.id.toString();
         part["visible"] = partIt.second.visible ? "true" : "false";
+        part["locked"] = partIt.second.locked ? "true" : "false";
+        part["subdived"] = partIt.second.subdived ? "true" : "false";
         if (!partIt.second.name.isEmpty())
             part["name"] = partIt.second.name;
         snapshot->parts[part["id"]] = part;
@@ -560,6 +584,8 @@ void SkeletonDocument::fromSnapshot(const SkeletonSnapshot &snapshot)
         SkeletonPart part(QUuid(partKv.first));
         part.name = valueOfKeyInMapOrEmpty(partKv.second, "name");
         part.visible = isTrueValueString(valueOfKeyInMapOrEmpty(partKv.second, "visible"));
+        part.locked = isTrueValueString(valueOfKeyInMapOrEmpty(partKv.second, "locked"));
+        part.subdived = isTrueValueString(valueOfKeyInMapOrEmpty(partKv.second, "subdived"));
         partMap[part.id] = part;
     }
     for (const auto &partIdIt: snapshot.partIdList) {
@@ -704,3 +730,45 @@ void SkeletonDocument::generateMesh()
     connect(thread, &QThread::finished, thread, &QThread::deleteLater);
     thread->start();
 }
+
+void SkeletonDocument::setPartLockState(QUuid partId, bool locked)
+{
+    auto part = partMap.find(partId);
+    if (part == partMap.end()) {
+        qDebug() << "Part not found:" << partId;
+        return;
+    }
+    if (part->second.locked == locked)
+        return;
+    part->second.locked = locked;
+    emit partLockStateChanged(partId);
+}
+
+void SkeletonDocument::setPartVisibleState(QUuid partId, bool visible)
+{
+    auto part = partMap.find(partId);
+    if (part == partMap.end()) {
+        qDebug() << "Part not found:" << partId;
+        return;
+    }
+    if (part->second.visible == visible)
+        return;
+    part->second.visible = visible;
+    emit partVisibleStateChanged(partId);
+    emit skeletonChanged();
+}
+
+void SkeletonDocument::setPartSubdivState(QUuid partId, bool subdived)
+{
+    auto part = partMap.find(partId);
+    if (part == partMap.end()) {
+        qDebug() << "Part not found:" << partId;
+        return;
+    }
+    if (part->second.subdived == subdived)
+        return;
+    part->second.subdived = subdived;
+    emit partSubdivStateChanged(partId);
+    emit skeletonChanged();
+}
+
diff --git a/src/skeletondocument.h b/src/skeletondocument.h
index 5dd39399..6c4d03c4 100644
--- a/src/skeletondocument.h
+++ b/src/skeletondocument.h
@@ -80,11 +80,15 @@ public:
     QUuid id;
     QString name;
     bool visible;
+    bool locked;
+    bool subdived;
     QImage preview;
     std::vector<QUuid> nodeIds;
     bool previewIsObsolete;
     SkeletonPart(const QUuid &withId=QUuid()) :
         visible(true),
+        locked(false),
+        subdived(false),
         previewIsObsolete(true)
     {
         id = withId.isNull() ? QUuid::createUuid() : withId;
@@ -134,6 +138,9 @@ signals:
     void turnaroundChanged();
     void editModeChanged();
     void skeletonChanged();
+    void partLockStateChanged(QUuid partId);
+    void partVisibleStateChanged(QUuid partId);
+    void partSubdivStateChanged(QUuid partId);
 public:
     SkeletonDocument();
     ~SkeletonDocument();
@@ -157,8 +164,6 @@ public slots:
     void removeNode(QUuid nodeId);
     void removeEdge(QUuid edgeId);
     void removePart(QUuid partId);
-    void showPart(QUuid partId);
-    void hidePart(QUuid partId);
     void addNode(float x, float y, float z, float radius, QUuid fromNodeId);
     void scaleNodeByAddRadius(QUuid nodeId, float amount);
     void moveNodeBy(QUuid nodeId, float x, float y, float z);
@@ -171,10 +176,14 @@ public slots:
     void uiReady();
     void generateMesh();
     void meshReady();
+    void setPartLockState(QUuid partId, bool locked);
+    void setPartVisibleState(QUuid partId, bool visible);
+    void setPartSubdivState(QUuid partId, bool subdived);
 private:
     void splitPartByNode(std::vector<std::vector<QUuid>> *groups, QUuid nodeId);
     void joinNodeAndNeiborsToGroup(std::vector<QUuid> *group, QUuid nodeId, std::set<QUuid> *visitMap, QUuid noUseEdgeId=QUuid());
     void splitPartByEdge(std::vector<std::vector<QUuid>> *groups, QUuid edgeId);
+    bool isPartLocked(QUuid partId);
 private:
     bool m_resultMeshIsObsolete;
     MeshGenerator *m_meshGenerator;
diff --git a/src/skeletondocumentwindow.cpp b/src/skeletondocumentwindow.cpp
index bd3dffee..53f97b24 100644
--- a/src/skeletondocumentwindow.cpp
+++ b/src/skeletondocumentwindow.cpp
@@ -97,9 +97,9 @@ SkeletonDocumentWindow::SkeletonDocumentWindow() :
     containerWidget->setMinimumSize(400, 400);
     
     m_modelWidget = new ModelWidget(containerWidget);
-    m_modelWidget->setMinimumSize(128, 128);
+    m_modelWidget->setMinimumSize(256, 256);
     m_modelWidget->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
-    m_modelWidget->move(10, 10);
+    m_modelWidget->move(16, 16);
     m_modelWidget->setGraphicsFunctions(graphicsWidget);
     
     SkeletonPartListWidget *partListWidget = new SkeletonPartListWidget(m_document);
@@ -193,33 +193,13 @@ SkeletonDocumentWindow::SkeletonDocumentWindow() :
     connect(m_document, &SkeletonDocument::edgeRemoved, graphicsWidget, &SkeletonGraphicsWidget::edgeRemoved);
     connect(m_document, &SkeletonDocument::nodeRadiusChanged, graphicsWidget, &SkeletonGraphicsWidget::nodeRadiusChanged);
     connect(m_document, &SkeletonDocument::nodeOriginChanged, graphicsWidget, &SkeletonGraphicsWidget::nodeOriginChanged);
+    connect(m_document, &SkeletonDocument::partVisibleStateChanged, graphicsWidget, &SkeletonGraphicsWidget::partVisibleStateChanged);
     
     connect(m_document, &SkeletonDocument::partListChanged, partListWidget, &SkeletonPartListWidget::partListChanged);
     connect(m_document, &SkeletonDocument::partPreviewChanged, partListWidget, &SkeletonPartListWidget::partPreviewChanged);
-    
-    /*
-    connect(graphicsWidget, &SkeletonGraphicsWidget::checkEdge, edgePropertyWidget, &SkeletonEdgePropertyWidget::showProperties);
-    connect(graphicsWidget, &SkeletonGraphicsWidget::uncheckEdge, [=](QUuid edgeId) {
-        edgePropertyWidget->hide();
-    });
-    connect(m_document, &SkeletonDocument::edgeRemoved, [=](QUuid edgeId) {
-        if (edgeId == edgePropertyWidget->currentEdgeId()) {
-            edgePropertyWidget->hide();
-        }
-    });
-    connect(edgePropertyWidget, &SkeletonEdgePropertyWidget::setEdgeBranchMode, m_document, &SkeletonDocument::setEdgeBranchMode);
-    
-    connect(graphicsWidget, &SkeletonGraphicsWidget::checkNode, nodePropertyWidget, &SkeletonNodePropertyWidget::showProperties);
-    connect(graphicsWidget, &SkeletonGraphicsWidget::uncheckNode, [=](QUuid nodeId) {
-        nodePropertyWidget->hide();
-    });
-    connect(m_document, &SkeletonDocument::nodeRemoved, [=](QUuid nodeId) {
-        if (nodeId == nodePropertyWidget->currentNodeId()) {
-            nodePropertyWidget->hide();
-        }
-    });
-    connect(nodePropertyWidget, &SkeletonNodePropertyWidget::setNodeRootMarkMode, m_document, &SkeletonDocument::setNodeRootMarkMode);
-    */
+    connect(m_document, &SkeletonDocument::partLockStateChanged, partListWidget, &SkeletonPartListWidget::partLockStateChanged);
+    connect(m_document, &SkeletonDocument::partVisibleStateChanged, partListWidget, &SkeletonPartListWidget::partVisibleStateChanged);
+    connect(m_document, &SkeletonDocument::partSubdivStateChanged, partListWidget, &SkeletonPartListWidget::partSubdivStateChanged);
     
     connect(m_document, &SkeletonDocument::skeletonChanged, m_document, &SkeletonDocument::generateMesh);
     
diff --git a/src/skeletongraphicswidget.cpp b/src/skeletongraphicswidget.cpp
index 1a27dea0..c50964c5 100644
--- a/src/skeletongraphicswidget.cpp
+++ b/src/skeletongraphicswidget.cpp
@@ -366,10 +366,15 @@ bool SkeletonGraphicsWidget::mousePress(QMouseEvent *event)
                 }
                 QPointF mainProfile = m_cursorNodeItem->origin();
                 QPointF sideProfile = mainProfile;
-                if (mainProfile.x() >= scene()->width() / 2) {
-                    sideProfile.setX(mainProfile.x() - scene()->width() / 4);
+                if (m_checkedNodeItem) {
+                    auto itemIt = nodeItemMap.find(m_checkedNodeItem->id());
+                    sideProfile.setX(itemIt->second.second->origin().x());
                 } else {
-                    sideProfile.setX(mainProfile.x() +scene()->width() / 4);
+                    if (mainProfile.x() >= scene()->width() / 2) {
+                        sideProfile.setX(mainProfile.x() - scene()->width() / 4);
+                    } else {
+                        sideProfile.setX(mainProfile.x() +scene()->width() / 4);
+                    }
                 }
                 QPointF unifiedMainPos = scenePosToUnified(mainProfile);
                 QPointF unifiedSidePos = scenePosToUnified(sideProfile);
@@ -642,3 +647,27 @@ void SkeletonGraphicsWidget::edgeChanged(QUuid edgeId)
 {
 }
 
+void SkeletonGraphicsWidget::partVisibleStateChanged(QUuid partId)
+{
+    const SkeletonPart *part = m_document->findPart(partId);
+    for (const auto &nodeId: part->nodeIds) {
+        const SkeletonNode *node = m_document->findNode(nodeId);
+        for (auto edgeIt = node->edgeIds.begin(); edgeIt != node->edgeIds.end(); edgeIt++) {
+            auto edgeItemIt = edgeItemMap.find(*edgeIt);
+            if (edgeItemIt == edgeItemMap.end()) {
+                qDebug() << "Edge item not found:" << *edgeIt;
+                continue;
+            }
+            edgeItemIt->second.first->setVisible(part->visible);
+            edgeItemIt->second.second->setVisible(part->visible);
+        }
+        auto nodeItemIt = nodeItemMap.find(nodeId);
+        if (nodeItemIt == nodeItemMap.end()) {
+            qDebug() << "Node item not found:" << nodeId;
+            continue;
+        }
+        nodeItemIt->second.first->setVisible(part->visible);
+        nodeItemIt->second.second->setVisible(part->visible);
+    }
+}
+
diff --git a/src/skeletongraphicswidget.h b/src/skeletongraphicswidget.h
index 62c2e99b..5977d853 100644
--- a/src/skeletongraphicswidget.h
+++ b/src/skeletongraphicswidget.h
@@ -264,6 +264,7 @@ public slots:
     void canvasResized();
     void editModeChanged();
     void updateCursor();
+    void partVisibleStateChanged(QUuid partId);
 private slots:
     void turnaroundImageReady();
 private:
diff --git a/src/skeletonpartlistwidget.cpp b/src/skeletonpartlistwidget.cpp
index 8f749f9b..278871a9 100644
--- a/src/skeletonpartlistwidget.cpp
+++ b/src/skeletonpartlistwidget.cpp
@@ -8,20 +8,17 @@ SkeletonPartWidget::SkeletonPartWidget(const SkeletonDocument *document, QUuid p
     m_document(document),
     m_partId(partId)
 {
-    m_visibleButton = new QPushButton(QChar(fa::eye));
-    m_visibleButton->setStyleSheet("QPushButton {border: none; background: none; color: #252525;}");
-    m_visibleButton->setFont(Theme::awesome()->font(Theme::miniIconFontSize));
-    m_visibleButton->setFixedSize(Theme::miniIconSize, Theme::miniIconSize);
+    m_visibleButton = new QPushButton();
+    updateButton(m_visibleButton, QChar(fa::eye), false);
+    initButton(m_visibleButton);
     
-    m_lockButton = new QPushButton(QChar(fa::unlock));
-    m_lockButton->setStyleSheet("QPushButton {border: none; background: none; color: #252525;}");
-    m_lockButton->setFont(Theme::awesome()->font(Theme::miniIconFontSize));
-    m_lockButton->setFixedSize(Theme::miniIconSize, Theme::miniIconSize);
+    m_lockButton = new QPushButton();
+    updateButton(m_lockButton, QChar(fa::unlock), false);
+    initButton(m_lockButton);
     
-    m_subdivButton = new QPushButton(QChar(fa::cube));
-    m_subdivButton->setStyleSheet("QPushButton {border: none; background: none; color: #252525;}");
-    m_subdivButton->setFont(Theme::awesome()->font(Theme::miniIconFontSize));
-    m_subdivButton->setFixedSize(Theme::miniIconSize, Theme::miniIconSize);
+    m_subdivButton = new QPushButton();
+    updateButton(m_subdivButton, QChar(fa::cube), false);
+    initButton(m_subdivButton);
     
     m_previewLabel = new QLabel;
     
@@ -34,46 +31,141 @@ SkeletonPartWidget::SkeletonPartWidget(const SkeletonDocument *document, QUuid p
     miniToolLayout->addWidget(m_subdivButton);
     miniToolLayout->addStretch();
     
+    QWidget *hrWidget = new QWidget;
+    hrWidget->setFixedHeight(1);
+    hrWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+    hrWidget->setStyleSheet(QString("background-color: #252525;"));
+    hrWidget->setContentsMargins(0, 0, 0, 0);
+    
     QVBoxLayout *mainLayout = new QVBoxLayout;
     mainLayout->setSpacing(0);
     mainLayout->setContentsMargins(0, 0, 0, 0);
     mainLayout->addLayout(miniToolLayout);
     mainLayout->addWidget(m_previewLabel);
+    mainLayout->addWidget(hrWidget);
     
     setLayout(mainLayout);
+    
+    connect(this, &SkeletonPartWidget::setPartLockState, m_document, &SkeletonDocument::setPartLockState);
+    connect(this, &SkeletonPartWidget::setPartVisibleState, m_document, &SkeletonDocument::setPartVisibleState);
+    connect(this, &SkeletonPartWidget::setPartSubdivState, m_document, &SkeletonDocument::setPartSubdivState);
+    
+    connect(m_lockButton, &QPushButton::clicked, [=]() {
+        if (m_lockButton->text() == QChar(fa::lock)) {
+            emit setPartLockState(m_partId, false);
+        } else {
+            emit setPartLockState(m_partId, true);
+        }
+    });
+    
+    connect(m_visibleButton, &QPushButton::clicked, [=]() {
+        if (m_visibleButton->text() == QChar(fa::eye)) {
+            emit setPartVisibleState(m_partId, false);
+        } else {
+            emit setPartVisibleState(m_partId, true);
+        }
+    });
+    
+    connect(m_subdivButton, &QPushButton::clicked, [=]() {
+        if (m_subdivButton->text() == QChar(fa::cube)) {
+            emit setPartSubdivState(m_partId, true);
+        } else {
+            emit setPartSubdivState(m_partId, false);
+        }
+    });
 }
 
-QLabel *SkeletonPartWidget::previewLabel()
+void SkeletonPartWidget::initButton(QPushButton *button)
 {
-    return m_previewLabel;
+    button->setFont(Theme::awesome()->font(Theme::miniIconFontSize));
+    button->setFixedSize(Theme::miniIconSize, Theme::miniIconSize);
 }
 
-void SkeletonPartWidget::reload()
+void SkeletonPartWidget::updateButton(QPushButton *button, QChar icon, bool highlighted)
+{
+    button->setText(icon);
+    if (highlighted)
+        button->setStyleSheet("QPushButton {border: none; background: none; color: #f7d9c8;}");
+    else
+        button->setStyleSheet("QPushButton {border: none; background: none; color: #252525;}");
+}
+
+void SkeletonPartWidget::updatePreview()
 {
     const SkeletonPart *part = m_document->findPart(m_partId);
     if (!part) {
         qDebug() << "Part not found:" << m_partId;
         return;
     }
-    //m_nameLabel->setText(part->name.isEmpty() ? part->id.toString() : part->name);
     m_previewLabel->setPixmap(QPixmap::fromImage(part->preview));
 }
 
+void SkeletonPartWidget::updateLockButton()
+{
+    const SkeletonPart *part = m_document->findPart(m_partId);
+    if (!part) {
+        qDebug() << "Part not found:" << m_partId;
+        return;
+    }
+    if (part->locked)
+        updateButton(m_lockButton, QChar(fa::lock), true);
+    else
+        updateButton(m_lockButton, QChar(fa::unlock), false);
+}
+
+void SkeletonPartWidget::updateVisibleButton()
+{
+    const SkeletonPart *part = m_document->findPart(m_partId);
+    if (!part) {
+        qDebug() << "Part not found:" << m_partId;
+        return;
+    }
+    if (part->visible)
+        updateButton(m_visibleButton, QChar(fa::eye), false);
+    else
+        updateButton(m_visibleButton, QChar(fa::eyeslash), true);
+}
+
+void SkeletonPartWidget::updateSubdivButton()
+{
+    const SkeletonPart *part = m_document->findPart(m_partId);
+    if (!part) {
+        qDebug() << "Part not found:" << m_partId;
+        return;
+    }
+    if (part->subdived)
+        updateButton(m_subdivButton, QChar(fa::cubes), true);
+    else
+        updateButton(m_subdivButton, QChar(fa::cube), false);
+}
+
+void SkeletonPartWidget::reload()
+{
+    updatePreview();
+    updateLockButton();
+    updateVisibleButton();
+    updateSubdivButton();
+}
+
 SkeletonPartListWidget::SkeletonPartListWidget(const SkeletonDocument *document) :
     m_document(document)
 {
     setSelectionMode(QAbstractItemView::NoSelection);
+    setFocusPolicy(Qt::NoFocus);
     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-    setSpacing(1);
+    setSpacing(0);
     setContentsMargins(0, 0, 0, 0);
 }
 
 void SkeletonPartListWidget::partChanged(QUuid partId)
 {
-    auto itemIt = m_itemMap.find(partId);
-    if (itemIt == m_itemMap.end()) {
+    auto item = m_itemMap.find(partId);
+    if (item == m_itemMap.end()) {
+        qDebug() << "Part item not found:" << partId;
         return;
     }
+    SkeletonPartWidget *widget = (SkeletonPartWidget *)itemWidget(item->second);
+    widget->reload();
 }
 
 void SkeletonPartListWidget::partListChanged()
@@ -93,18 +185,46 @@ void SkeletonPartListWidget::partListChanged()
     }
 }
 
-void SkeletonPartListWidget::partPreviewChanged(QUuid partid)
+void SkeletonPartListWidget::partPreviewChanged(QUuid partId)
 {
-    const SkeletonPart *part = m_document->findPart(partid);
-    if (!part) {
-        qDebug() << "Part not found:" << partid;
-        return;
-    }
-    auto item = m_itemMap.find(partid);
+    auto item = m_itemMap.find(partId);
     if (item == m_itemMap.end()) {
-        qDebug() << "Part item not found:" << partid;
+        qDebug() << "Part item not found:" << partId;
         return;
     }
     SkeletonPartWidget *widget = (SkeletonPartWidget *)itemWidget(item->second);
-    widget->previewLabel()->setPixmap(QPixmap::fromImage(part->preview));
+    widget->updatePreview();
+}
+
+void SkeletonPartListWidget::partLockStateChanged(QUuid partId)
+{
+    auto item = m_itemMap.find(partId);
+    if (item == m_itemMap.end()) {
+        qDebug() << "Part item not found:" << partId;
+        return;
+    }
+    SkeletonPartWidget *widget = (SkeletonPartWidget *)itemWidget(item->second);
+    widget->updateLockButton();
+}
+
+void SkeletonPartListWidget::partVisibleStateChanged(QUuid partId)
+{
+    auto item = m_itemMap.find(partId);
+    if (item == m_itemMap.end()) {
+        qDebug() << "Part item not found:" << partId;
+        return;
+    }
+    SkeletonPartWidget *widget = (SkeletonPartWidget *)itemWidget(item->second);
+    widget->updateVisibleButton();
+}
+
+void SkeletonPartListWidget::partSubdivStateChanged(QUuid partId)
+{
+    auto item = m_itemMap.find(partId);
+    if (item == m_itemMap.end()) {
+        qDebug() << "Part item not found:" << partId;
+        return;
+    }
+    SkeletonPartWidget *widget = (SkeletonPartWidget *)itemWidget(item->second);
+    widget->updateSubdivButton();
 }
diff --git a/src/skeletonpartlistwidget.h b/src/skeletonpartlistwidget.h
index edf64f7d..343cde81 100644
--- a/src/skeletonpartlistwidget.h
+++ b/src/skeletonpartlistwidget.h
@@ -9,10 +9,17 @@
 class SkeletonPartWidget : public QWidget
 {
     Q_OBJECT
+signals:
+    void setPartLockState(QUuid partId, bool locked);
+    void setPartVisibleState(QUuid partId, bool visible);
+    void setPartSubdivState(QUuid partId, bool subdived);
 public:
     SkeletonPartWidget(const SkeletonDocument *document, QUuid partId);
     void reload();
-    QLabel *previewLabel();
+    void updatePreview();
+    void updateLockButton();
+    void updateVisibleButton();
+    void updateSubdivButton();
 private:
     const SkeletonDocument *m_document;
     QUuid m_partId;
@@ -21,6 +28,9 @@ private:
     QPushButton *m_lockButton;
     QPushButton *m_subdivButton;
     QLabel *m_nameLabel;
+private:
+    void initButton(QPushButton *button);
+    void updateButton(QPushButton *button, QChar icon, bool highlighted);
 };
 
 class SkeletonPartListWidget : public QListWidget
@@ -32,6 +42,9 @@ public slots:
     void partChanged(QUuid partId);
     void partListChanged();
     void partPreviewChanged(QUuid partid);
+    void partLockStateChanged(QUuid partId);
+    void partVisibleStateChanged(QUuid partId);
+    void partSubdivStateChanged(QUuid partId);
 private:
     const SkeletonDocument *m_document;
     std::map<QUuid, QListWidgetItem *> m_itemMap;