feat(core/rust): expose display offset handling to rust

core/embed/rust/build.rs

@@ -253,6 +253,7 @@ fn generate_trezorhal_bindings() {
         .allowlist_function("storage_next_counter")
         // display
         .allowlist_function("display_init")
+        .allowlist_function("display_offset")
         .allowlist_function("display_refresh")
         .allowlist_function("display_backlight")
         .allowlist_function("display_text")

core/embed/rust/src/trezorhal/display.rs

@@ -1,5 +1,6 @@
 use super::ffi;
 use core::ptr;
+use cty::c_int;
 
 pub struct ToifInfo {
     pub width: u16,
@@ -140,3 +141,12 @@ pub fn set_window(x0: u16, y0: u16, x1: u16, y1: u16) {
         ffi::display_set_window(x0, y0, x1, y1);
     }
 }
+
+pub fn get_offset() -> (i32, i32) {
+    unsafe {
+        let mut x: c_int = 0;
+        let mut y: c_int = 0;
+        ffi::display_offset(ptr::null_mut(), &mut x, &mut y);
+        (x as i32, y as i32)
+    }
+}

core/embed/rust/src/ui/display.rs

@@ -229,6 +229,11 @@ pub fn pixeldata_dirty() {
     display::pixeldata_dirty();
 }
 
+pub fn get_offset() -> Offset {
+    let offset = display::get_offset();
+    Offset::new(offset.0, offset.1)
+}
+
 pub fn set_window(window: Rect) {
     display::set_window(
         window.x0 as u16,