Merge branch 'develop' into 'develop'

add sample for cache_window_size

See merge request !18

glow-extras @ 89472844

-Subproject commit db76c806b3df01907bab47d0c6f4cef17332156a
+Subproject commit 89472844133cbf2b352e5ecbf0f7cce037ac817d

samples/basic/viewer/main.cc

@@ -1174,6 +1174,34 @@ void headless_screenshot(pm::vertex_attribute<tg::pos3> const& pos)
     gv::view(pos);
 }
 
+void cache_window_size(pm::vertex_attribute<tg::pos3> const& pos)
+{
+    // on closing the viewer, the window size and position are usually saved to and read from a
+    // glfwapp.ini file (and imgui.ini) in the current working directory
+    //
+    // this behavior can be changed using gv::cache_window_size(folder) or gv::no_cache_window_size
+    // -> gv::cache_window_size(folder) changes the folder for the .ini files
+    //    - folder can be absolute (starting with "/") or relative to the CWD
+    //    - the trailing "/" has no effect and is added automatically if it is not present
+    //    - if the folder does not exist, a warning is emitted and the folder defaults to the CWD
+    // -> gv::no_cache_window_size disables creating or reading these files (same as gv::cache_window_size(""))
+
+    {
+        // to avoid the creation of additional files, this is disabled in this sample file
+        // auto cfg = gv::config(gv::cache_window_size("/my_folder_path/"));
+        auto cfg = gv::config(gv::no_cache_window_size);
+        gv::view(pos, "this window does not read or write .ini files for the window size");
+    }
+
+    {
+        // interactive viewers currently depend on GV_SCOPED_CONFIG
+        GV_SCOPED_CONFIG(gv::no_cache_window_size);
+        gv::interactive([&](){
+            gv::view(pos, "interactive version: this window does not read or write .ini files for the window size");
+        });
+    }
+}
+
 void special_use_cases(pm::vertex_attribute<tg::pos3> const& pos)
 {
     // TODO: decoupled camera
@@ -1397,6 +1425,8 @@ int main()
 
         headless_screenshot(pos);
 
+        cache_window_size(pos);
+
         imguizmo(pos);
     }