improve reload ui

data/layout.xml

@@ -144,7 +144,7 @@
         </node>
         <button id="button-unfold-all" width="30" height="20" text="+" margin="0 5 0 0"/>
       </border>
-      <border color=".4" pad="5" dir="col" width="100%">
+      <border color=".4" pad="5" dir="col" width="100%" grow="1">
 
         <!-- PREVIEW -->
 
@@ -152,7 +152,7 @@
           <stroke-preview id="canvas" width="100%" height="100"/>
         </button-custom>
 
-        <scroll id="scroller" scroll-color=".3" margin="5 5 5 10" max-height="500" color=".4">
+        <scroll id="scroller" scroll-color=".3" margin="5 5 5 10" color=".4" height="1" grow="1">
         
         <!-- PRESET AND SHAPE -->
 

src/app_layout.cpp

@@ -238,6 +238,7 @@ void App::init_sidebar()
                     fp->destroy();
             }
             layout[main_id]->add_child(stroke);
+            stroke->SetSize(350, YGUndefined);
             auto tick = layout[main_id]->add_child<NodeImage>();
             tick->SetPositioning(YGPositionTypeAbsolute);
             tick->SetSize(32, 16);
@@ -251,7 +252,7 @@ void App::init_sidebar()
             stroke->m_mouse_ignore = false;
             stroke->mouse_capture();
             auto scroll = stroke->find<NodeScroll>("scroller");
-            scroll->SetMaxHeight(glm::max(100.f, screen.y - pos.y - 200.f));
+            scroll->SetHeight(glm::max(100.f, screen.y - pos.y - 200.f));
             layout[main_id]->update();
 
             stroke->on_popup_close = [this, tick](Node*) {
@@ -1179,6 +1180,11 @@ void App::initLayout()
     NodeIcon::static_init();
     NodeStrokePreview::static_init();
 
+    layout.on_reloading = [&] {
+        ui_save();
+        NodeStrokePreview::empty_queue();
+    };
+
     layout.on_loaded = [&] {
         LOG("initializing layout updating after load");
         layout[main_id]->update(width, height, zoom);

src/layout.cpp

@@ -33,6 +33,9 @@ bool LayoutManager::load(const char* path)
         return true; // already loaded
 #endif // __ANDROID__
 
+    if (!m_layouts.empty() && on_reloading)
+        on_reloading();
+    
     m_path = path;
 
     auto old = std::move(m_layouts);

src/layout.h

@@ -19,6 +19,7 @@ class LayoutManager
 public:
     bool m_loaded = false;
     std::function<void()> on_loaded;
+    std::function<void()> on_reloading;
     void unload();
     void create();
     bool load(const char* path);

src/node.h

@@ -92,7 +92,7 @@ enum class kWidget : uint16_t
     UserManual = const_hash("usermanual"),
 };
 
-class Node
+class Node : public std::enable_shared_from_this<Node>
 {
     friend class LayoutManager;
 public:

src/node_stroke_preview.cpp

@@ -10,7 +10,7 @@
 std::atomic_int NodeStrokePreview::s_instances{ 0 };
 std::atomic_bool NodeStrokePreview::s_running{ false };
 std::thread NodeStrokePreview::s_renderer;
-BlockingQueue<NodeStrokePreview*> NodeStrokePreview::s_queue;
+BlockingQueue<std::shared_ptr<NodeStrokePreview>> NodeStrokePreview::s_queue;
 
 RTT NodeStrokePreview::m_rtt;
 RTT NodeStrokePreview::m_rtt_mixer;
@@ -33,6 +33,11 @@ void NodeStrokePreview::terminate_renderer()
     }
 }
 
+void NodeStrokePreview::empty_queue()
+{
+    s_queue.q.clear();
+}
+
 Node* NodeStrokePreview::clone_instantiate() const
 {
     return new NodeStrokePreview();
@@ -548,7 +553,7 @@ void NodeStrokePreview::draw_stroke()
         });
     }
     s_queue.mutex.unlock();
-    s_queue.PostUnique(this, m_draw_first);
+    s_queue.PostUnique(std::static_pointer_cast<NodeStrokePreview>(shared_from_this()), m_draw_first);
 }
 
 void NodeStrokePreview::draw()

src/node_stroke_preview.h

@@ -29,8 +29,9 @@ public:
     static std::atomic_int s_instances;
     static std::atomic_bool s_running;
     static std::thread s_renderer;
-    static BlockingQueue<NodeStrokePreview*> s_queue;
+    static BlockingQueue<std::shared_ptr<NodeStrokePreview>> s_queue;
     static void terminate_renderer();
+    static void empty_queue();
     std::shared_ptr<Brush> m_brush;
     std::shared_ptr<Brush> m_dual_brush;
     bool m_draw_first = false;