BugFix glfw set Window Title

Function is not thread safe, causing crash when saving.

Mixer.cpp

@@ -54,7 +54,7 @@ static void saveSession(const std::string& filename, Session *session)
         // set session filename
         session->setFilename(filename);
         // cosmetics saved ok
-        Rendering::manager().mainWindow().setTitle(filename);
+        Rendering::manager().setMainWindowTitle(filename);
         Settings::application.recentSessions.push(filename);
         Log::Notify("Session %s saved.", filename.c_str());
 
@@ -67,7 +67,8 @@ static void saveSession(const std::string& filename, Session *session)
     session->unlock();
 }
 
-Mixer::Mixer() : session_(nullptr), back_session_(nullptr), current_view_(nullptr), dt_(0.f), dt__(0.f)
+Mixer::Mixer() : session_(nullptr), back_session_(nullptr), sessionSwapRequested_(false),
+    current_view_(nullptr), dt_(0.f), dt__(0.f)
 {
     // unsused initial empty session
     session_ = new Session;
@@ -141,8 +142,8 @@ void Mixer::update()
             // swap front and back sessions
             swap();
             ++View::need_deep_update_;
-            // set session filename
-            Rendering::manager().mainWindow().setTitle(session_->filename());
+            // inform new session filename
+            Rendering::manager().setMainWindowTitle(session_->filename());
             Settings::application.recentSessions.push(session_->filename());
         }
     }

Mixer.h

@@ -122,6 +122,7 @@ protected:
     Session *back_session_;
     std::list<Session *> garbage_;
     bool sessionSwapRequested_;
+    bool sessionNameChanged_;
     void swap();
 
     SourceList candidate_sources_;

RenderingManager.cpp

@@ -278,8 +278,6 @@ void Rendering::pushBackDrawCallback(RenderingCallback function)
 
 void Rendering::draw()
 {
-//     guint64 _time = gst_util_get_timestamp ();
-
     // operate on main window context
     main_.makeCurrent();
 
@@ -335,6 +333,11 @@ void Rendering::draw()
         g_timer_start(timer);
     }
 
+    // change main window title if requested
+    if (!main_new_title_.empty()) {
+        main_.setTitle(main_new_title_);
+        main_new_title_.clear();
+    }
 }
 
 
@@ -487,7 +490,7 @@ void RenderingWindow::setTitle(const std::string &title)
 {
     std::string fulltitle = Settings::application.windows[index_].name;
     if ( !title.empty() )
-        fulltitle += " -- " + title;
+        fulltitle = std::string(APP_NAME) + " -- " + title;
 
     glfwSetWindowTitle(window_, fulltitle.c_str());
 }

RenderingManager.h

@@ -29,6 +29,7 @@ class RenderingWindow
 
     GLFWwindow *window_, *master_;
     RenderingAttrib window_attributes_;
+    std::string title_changed_;
     int index_;
     float dpi_scale_;
 
@@ -106,9 +107,8 @@ public:
 
     // Initialization OpenGL and GLFW window creation
     bool init();
-
+    // show windows and reset views
     void show();
-
     // true if active rendering window
     bool isActive();
     // draw one frame
@@ -131,6 +131,7 @@ public:
     // get hold on the windows
     inline RenderingWindow& mainWindow() { return main_; }
     inline RenderingWindow& outputWindow() { return output_; }
+    inline void setMainWindowTitle(const std::string t) { main_new_title_ = t; }
 
     // request screenshot
     void requestScreenshot();
@@ -160,6 +161,7 @@ private:
     std::list<RenderingCallback> draw_callbacks_;
 
     RenderingWindow main_;
+    std::string main_new_title_;
     RenderingWindow output_;
 
     // file drop callback