preparing for some refactoring

src/rust/slide_object.rs

@@ -32,6 +32,7 @@ pub mod qobject {
         #[qproperty(i32, font_size)]
         #[qproperty(f32, video_start_time)]
         #[qproperty(f32, video_end_time)]
+        #[qproperty(QString, video_thumbnail)]
         // #[qproperty(*mut SlideModel, slide_model)]
         type SlideObject = super::SlideObjectRust;
 
@@ -116,6 +117,7 @@ pub struct SlideObjectRust {
     font_size: i32,
     video_start_time: f32,
     video_end_time: f32,
+    video_thumbnail: QString,
     // slide_model: *mut slide_model::SlideModel,
 }
 
@@ -139,6 +141,7 @@ impl Default for SlideObjectRust {
             inner_slide_index: 0,
             video_start_time: 0.0,
             video_end_time: 0.0,
+            video_thumbnail: QString::from(""),
             // slide_model: std::ptr::null_mut(),
         }
     }