separate global tick from draw so on tick any node can request a redraw

src/app.cpp

@@ -442,8 +442,6 @@ void App::update(float dt)
     if (canvas && canvas->m_canvas)
         canvas->m_canvas->stroke_draw();
     
-    layout[main_id]->tick(dt);
-    
     if (!(redraw || animate))
         return;
 

src/app.h

@@ -112,6 +112,7 @@ public:
     bool request_close();
     void terminate();
     void clear();
+    void tick(float dt);
     void update(float dt);
     void async_start();
     void async_update();

src/app_events.cpp

@@ -11,6 +11,11 @@ std::string win32_open_file();
 
 using namespace ui;
 
+void App::tick(float dt)
+{
+    layout[main_id]->tick(dt);
+}
+
 void App::resize(float w, float h)
 {
     redraw = true;

src/node.cpp

@@ -35,6 +35,11 @@
 #include "node_changelog.h"
 #include "node_usermanual.h"
 
+void Node::app_redraw()
+{
+    App::I.redraw = true;
+}
+
 void Node::async_start()
 {
     App::I.async_start();

src/node.h

@@ -211,6 +211,7 @@ public:
     virtual void removed(Node* parent);
     const Node* init_template(const char* id);
     void tick(float dt);
+    void app_redraw();
     void async_start();
     void async_update();
     void async_end();

src/node_text_input.cpp

@@ -16,7 +16,10 @@ void NodeTextInput::on_tick(float dt)
     {
         timer = 0;
         if (m_cursor)
+        {
             m_cursor->m_display = !m_cursor->m_display;
+            app_redraw();
+        }
     }
 }