feat(eckhart): show battery indication in BLD

- shown in bootloader menu
- shown in more info screen in wireless setup flow

[no changelog]

core/embed/rust/src/ui/layout_eckhart/bootloader/bld_header.rs

@@ -9,7 +9,7 @@ use crate::{
 };
 
 use super::super::{
-    component::{Button, ButtonContent, ButtonMsg},
+    component::{Button, ButtonContent, ButtonMsg, FuelGauge},
     constant, theme,
 };
 
@@ -28,6 +28,8 @@ pub struct BldHeader<'a> {
     /// icon in the top-left corner (used instead of left button)
     icon: Option<Icon>,
     icon_color: Option<Color>,
+    /// Battery status indicator
+    fuel_gauge: Option<FuelGauge>,
 }
 
 #[derive(Copy, Clone)]
@@ -57,6 +59,7 @@ impl<'a> BldHeader<'a> {
             left_button_msg: BldHeaderMsg::Cancelled,
             icon: None,
             icon_color: None,
+            fuel_gauge: None,
         }
     }
 
@@ -121,6 +124,11 @@ impl<'a> BldHeader<'a> {
         }
     }
 
+    #[inline(never)]
+    pub fn with_fuel_gauge(self, fuel_gauge: Option<FuelGauge>) -> Self {
+        Self { fuel_gauge, ..self }
+    }
+
     /// Calculates the width needed for the left icon, be it a button with icon
     /// or just icon
     fn left_icon_width(&self) -> i16 {
@@ -147,23 +155,26 @@ impl<'a> Component for BldHeader<'a> {
 
         let bounds = bounds.inset(Self::HEADER_INSETS);
         let rest = if let Some(b) = &mut self.right_button {
-            let (rest, button_area) = bounds.split_right(Self::HEADER_BUTTON_WIDTH);
-            b.place(button_area);
+            let (rest, right_button_area) = bounds.split_right(Self::HEADER_BUTTON_WIDTH);
+            b.place(right_button_area);
             rest
         } else {
             bounds
         };
 
         let icon_width = self.left_icon_width();
-        let (rest, title_area) = rest.split_left(icon_width);
+        let (left_button_area, title_area) = rest.split_left(icon_width);
 
-        self.left_button.place(rest);
+        self.left_button.place(left_button_area);
         self.title.place(title_area);
+        self.fuel_gauge.place(title_area.union(left_button_area));
+
         self.area = bounds;
         bounds
     }
 
     fn event(&mut self, ctx: &mut EventCtx, event: Event) -> Option<Self::Msg> {
+        self.fuel_gauge.event(ctx, event);
         if let Some(ButtonMsg::Clicked) = self.left_button.event(ctx, event) {
             return Some(self.left_button_msg);
         };
@@ -175,6 +186,7 @@ impl<'a> Component for BldHeader<'a> {
     }
 
     fn render<'s>(&'s self, target: &mut impl Renderer<'s>) {
+        self.fuel_gauge.render(target);
         self.right_button.render(target);
         self.left_button.render(target);
         if let Some(icon) = self.icon {

core/embed/rust/src/ui/layout_eckhart/bootloader/bld_menu_screen.rs

@@ -1,12 +1,18 @@
-use crate::ui::{
-    component::{Component, Event, EventCtx},
-    geometry::{Alignment, Rect},
-    layout_eckhart::component::Button,
-    shape::Renderer,
+use crate::{
+    strutil::TString,
+    ui::{
+        component::{Component, Event, EventCtx},
+        geometry::{Alignment, Rect},
+        shape::Renderer,
+    },
 };
 
 use super::{
-    super::{cshape::ScreenBorder, theme},
+    super::{
+        component::{Button, FuelGauge},
+        cshape::ScreenBorder,
+        theme,
+    },
     bld_menu::BldMenuSelectionMsg,
     BldHeader, BldHeaderMsg, BldMenu,
 };
@@ -51,7 +57,9 @@ impl BldMenuScreen {
             .item(turnoff)
             .item(reset);
         Self {
-            header: BldHeader::new("Bootloader".into()).with_close_button(),
+            header: BldHeader::new(TString::empty())
+                .with_fuel_gauge(Some(FuelGauge::always()))
+                .with_close_button(),
             menu,
             screen_border: None,
         }

core/embed/rust/src/ui/layout_eckhart/bootloader/wireless_setup_screen.rs

@@ -9,7 +9,11 @@ use crate::{
 };
 
 use super::{
-    super::{component::Button, constant::SCREEN, theme},
+    super::{
+        component::{Button, FuelGauge},
+        constant::SCREEN,
+        theme,
+    },
     pairing_mode::PairingMsg,
     BldActionBar, BldActionBarMsg, BldHeader, BldHeaderMsg,
 };
@@ -49,7 +53,9 @@ impl WirelessSetupScreen {
             .styled(theme::button_default())
             .initially_enabled(false);
         let more_info = MoreInfo {
-            header: BldHeader::new("More info".into()).with_close_button(),
+            header: BldHeader::new(TString::empty())
+                .with_fuel_gauge(Some(FuelGauge::always()))
+                .with_close_button(),
             instruction_primary: Label::left_aligned(
                 "The Trezor Suite app is required to set up your Trezor.".into(),
                 theme::TEXT_NORMAL,