Own brush workers and thin preview/platform seams

src/app_events.cpp

@@ -5,6 +5,10 @@
 #include "app_core/document_platform_io.h"
 #include "app_core/document_sharing.h"
 #include "platform_api/platform_services.h"
+#ifdef __LINUX__
+#include <GLFW/glfw3.h>
+#include "platform_linux/linux_platform_services.h"
+#endif
 #include "platform_legacy/legacy_platform_services.h"
 #include "renderer_gl/opengl_capabilities.h"
 
@@ -51,6 +55,21 @@ namespace {
 void App::set_platform_services(pp::platform::PlatformServices* services) noexcept
 {
     platform_services_ = services;
+#ifdef __LINUX__
+    if (services)
+    {
+        pp::platform::linux::set_fps_title_callback([this](std::string title) {
+            if (!glfw_window)
+                return;
+
+            glfwSetWindowTitle(glfw_window, title.c_str());
+        });
+    }
+    else
+    {
+        pp::platform::linux::set_fps_title_callback({});
+    }
+#endif
 }
 
 pp::platform::PlatformServices* App::platform_services() const noexcept