Trim main task queue, recording label, and canvas draw callbacks

src/legacy_recording_services.cpp

@@ -4,11 +4,14 @@
 
 #include "app.h"
 #include "canvas.h"
+#include "app_core/app_status.h"
 #include "legacy_app_dialog_services.h"
 #include "legacy_ui_overlay_services.h"
 #include "node_progress_bar.h"
 
 namespace pp::panopainter {
+void update_legacy_recording_frame_label(App& app);
+
 namespace {
 
 pp::app::RecordingWorkerIterationPlan make_recording_worker_iteration_plan(App& app)
@@ -42,9 +45,25 @@ void encode_recording_frame(
     LOG("rec frame encoded");
 
     if (plan.update_frame_label)
-        app.update_rec_frames();
+        update_legacy_recording_frame_label(app);
 }
 
+} // namespace
+
+void update_legacy_recording_frame_label(App& app)
+{
+    if (auto txt = app.layout[app.main_id]->find<NodeText>("txt-rec"))
+    {
+        const auto label = pp::app::make_recording_frame_label(
+            app.rec_running,
+            Canvas::I->m_encoder != nullptr,
+            Canvas::I->m_encoder ? Canvas::I->m_encoder->frames_count() : 0);
+        txt->set_text(label.text.c_str());
+    }
+}
+
+namespace {
+
 class LegacyRecordingServices final : public pp::app::RecordingServices {
 public:
     explicit LegacyRecordingServices(App& app) noexcept
@@ -54,7 +73,7 @@ public:
 
     void start_thread() override
     {
-        app_.update_rec_frames();
+        update_legacy_recording_frame_label(app_);
         app_.rec_thread = std::jthread(&App::rec_loop, &app_);
     }
 
@@ -65,7 +84,7 @@ public:
         app_.rec_cv.notify_all();
         if (app_.rec_thread.joinable())
             app_.rec_thread.join();
-        app_.update_rec_frames();
+        update_legacy_recording_frame_label(app_);
     }
 
     void delete_recorded_files() override
@@ -80,7 +99,7 @@ public:
 
     void update_frame_label() override
     {
-        app_.update_rec_frames();
+        update_legacy_recording_frame_label(app_);
     }
 
     void begin_export(int progress_total) override