Improve default WMR OpenXR bindings (#213)

* Bring back using dpad for click modifiers

* Use system button for show_hide on WMR controllers

---------

Co-authored-by: hare_ware <3469405-hare_ware@users.noreply.gitlab.com>

src/backend/openxr/helpers.rs

@@ -37,12 +37,19 @@ pub(super) fn init_xr() -> Result<(xr::Instance, xr::SystemId), anyhow::Error> {
     } else {
         log::warn!("Missing EXT_composition_layer_cylinder extension.");
     }
-
     if available_extensions.khr_composition_layer_equirect2 {
         enabled_extensions.khr_composition_layer_equirect2 = true;
     } else {
         log::warn!("Missing EXT_composition_layer_equirect2 extension.");
     }
+    if available_extensions
+        .other
+        .contains(&"XR_MNDX_system_buttons".to_owned())
+    {
+        enabled_extensions
+            .other
+            .push("XR_MNDX_system_buttons".to_owned());
+    }
 
     //#[cfg(not(debug_assertions))]
     let layers = [];

src/backend/openxr/input.rs

@@ -452,7 +452,7 @@ fn is_bool(maybe_type_str: Option<&String>) -> bool {
         .unwrap() // want panic
         .split('/')
         .next_back()
-        .is_some_and(|last| matches!(last, "click" | "touch"))
+        .is_some_and(|last| matches!(last, "click" | "touch") || last.starts_with("dpad_"))
 }
 
 macro_rules! add_custom {

src/backend/openxr/openxr_actions.json5

@@ -240,14 +240,22 @@
       right: "/user/hand/right/input/thumbstick/x"
     },
     show_hide: {
-      left: "/user/hand/left/input/menu/click",
+      left: "/user/hand/left/input/system/click",
     },
     space_drag: {
-      right: "/user/hand/right/input/menu/click",
+      right: "/user/hand/right/input/system/click",
     },
     space_reset: {
       double_click: true,
-      right: "/user/hand/right/input/menu/click",
+      right: "/user/hand/right/input/system/click",
+    },
+    click_modifier_right: {
+      left: "/user/hand/left/input/trackpad/dpad_up",
+      right: "/user/hand/right/input/trackpad/dpad_up"
+    },
+    click_modifier_middle: {
+      left: "/user/hand/left/input/trackpad/dpad_down",
+      right: "/user/hand/right/input/trackpad/dpad_down"
     },
   },
 
@@ -279,14 +287,14 @@
       right: "/user/hand/right/input/thumbstick/x"
     },
     show_hide: {
-      left: "/user/hand/left/input/menu/click",
+      left: "/user/hand/left/input/system/click",
     },
     space_drag: {
-      right: "/user/hand/right/input/menu/click",
+      right: "/user/hand/right/input/system/click",
     },
     space_reset: {
       double_click: true,
-      right: "/user/hand/right/input/menu/click",
+      right: "/user/hand/right/input/system/click",
     },
   },