add web sync files and key events

src/node_panel_brush.cpp

@@ -6,7 +6,10 @@
 
 #ifdef __APPLE__
 #include <Foundation/Foundation.h>
+#elif __WEB__
+void webgl_sync();
 #endif
+
 #include "canvas.h"
 #include "app.h"
 #include "abr.h"
@@ -266,6 +269,10 @@ bool NodePanelBrush::save()
             sw << *b;
         }
         f.write((char*)sw.m_data.data(), sw.m_data.size());
+        f.close();
+#if __WEB__
+        webgl_sync();
+#endif
         return true;
     }
     return false;