update

client/gui/editor/EditorCanvas.h

@@ -95,6 +95,8 @@ public:
     void setEntities(const QVector<core::Project::Entity>& entities,
                      const QVector<double>& opacities01,
                      const QString& projectDirAbs);
+    /// 播放/时间轴轻量刷帧时置 true，避免 setEntities 每帧 emit selectedEntityChanged 拖垮主线程
+    void setSuppressSelectionSignals(bool on) { m_suppressSelectionSignals = on; }
     void setTools(const QVector<core::Project::Tool>& tools, const QVector<double>& opacities01);
     void setCameraOverlays(const QVector<core::Project::Camera>& cameras,
                            const QString& selectedId,
@@ -107,6 +109,8 @@ public:
     int currentFrame() const { return m_currentFrame; }
 
     bool isDraggingEntity() const { return m_draggingEntity; }
+    /// 正在拖动摄像机中心手柄（Move 工具）；此时 overlays 由画布更新，勿用工作区求值覆盖
+    bool isDraggingCamera() const { return m_draggingCamera; }
 
     void selectEntityById(const QString& id);
     void clearEntitySelection();
@@ -252,6 +256,10 @@ private:
 
 private:
     QString m_projectDirAbs;
+    /// 实体抠图贴图缓存（键：磁盘绝对路径或 runtime/png 内容摘要），避免播放时每帧 QImage(path) 读盘
+    QHash<QString, QImage> m_entityRasterImageCache;
+    QString m_entityRasterCacheProjectDir;
+    bool m_suppressSelectionSignals = false;
     QHash<QString, QImage> m_blackholeOverlayImageCache;
     QString m_bgAbsPath;
     bool m_backgroundVisible = true;