feat(eckhart): default homescreen

- make homescreen hold to lock, lock the device by long-pressing the homescreen anywhere but the
action bar

core/embed/rust/src/ui/layout_eckhart/component/button.rs

@@ -221,6 +221,11 @@ impl Button {
         self.area
     }
 
+    pub fn touch_area(&self) -> Rect {
+        self.touch_expand
+            .map_or(self.area, |expand| self.area.outset(expand))
+    }
+
     fn set(&mut self, ctx: &mut EventCtx, state: State) {
         if self.state != state {
             self.state = state;
@@ -364,12 +369,7 @@ impl Component for Button {
     }
 
     fn event(&mut self, ctx: &mut EventCtx, event: Event) -> Option<Self::Msg> {
-        let touch_area = if let Some(expand) = self.touch_expand {
-            self.area.outset(expand)
-        } else {
-            self.area
-        };
-
+        let touch_area = self.touch_area();
         match event {
             Event::Touch(TouchEvent::TouchStart(pos)) => {
                 match self.state {

core/embed/rust/src/ui/layout_eckhart/component_msg_obj.rs

@@ -74,6 +74,7 @@ impl ComponentMsgObj for Homescreen {
     fn msg_try_into_obj(&self, msg: Self::Msg) -> Result<Obj, Error> {
         match msg {
             HomescreenMsg::Dismissed => Ok(CANCELLED.as_obj()),
+            HomescreenMsg::Menu => Ok(INFO.as_obj()),
         }
     }
 }

core/embed/rust/src/ui/layout_eckhart/firmware/action_bar.rs

@@ -124,6 +124,13 @@ impl ActionBar {
         self.right_button.set_expanded_touch_area(expand);
     }
 
+    pub fn touch_area(&self) -> Rect {
+        let right_area = self.right_button.touch_area();
+        self.left_button
+            .as_ref()
+            .map_or(right_area, |left| right_area.union(left.touch_area()))
+    }
+
     pub fn update(&mut self, new_pager: Pager) {
         // TODO: review `clone()` of `left_content`/`right_content`
         if let Mode::Double { pager } = &mut self.mode {
@@ -347,9 +354,7 @@ impl Component for ActionBar {
             btn.render(target);
         }
         self.right_button.render(target);
-        if let Some(htc_anim) = &self.htc_anim {
-            htc_anim.render(target);
-        }
+        self.htc_anim.render(target);
     }
 }
 

core/embed/rust/src/ui/layout_eckhart/firmware/homescreen.rs

@@ -5,18 +5,23 @@ use crate::{
     translations::TR,
     ui::{
         component::{text::TextStyle, Component, Event, EventCtx, Label, Never},
-        display::image::ImageInfo,
-        geometry::{Insets, Offset, Rect},
+        display::{image::ImageInfo, Color},
+        geometry::{Alignment2D, Grid, Insets, Offset, Point, Rect},
         layout::util::get_user_custom_image,
+        lerp::Lerp,
         shape::{self, Renderer},
+        util::animation_disabled,
     },
 };
 
 use super::{
-    super::{component::Button, fonts},
+    super::{
+        component::{Button, ButtonMsg},
+        fonts,
+    },
     constant::{HEIGHT, SCREEN, WIDTH},
-    theme::{self, firmware::button_homebar_style, BLACK, GREEN_DARK, GREEN_EXTRA_DARK},
-    ActionBar, ActionBarMsg, Hint,
+    theme::{self, firmware::button_homebar_style, BG, BLACK, GREY_EXTRA_DARK},
+    ActionBar, ActionBarMsg, Hint, HoldToConfirmAnim,
 };
 
 /// Full-screen component for the homescreen and lockscreen.
@@ -29,14 +34,21 @@ pub struct Homescreen {
     action_bar: ActionBar,
     /// Background image
     image: Option<BinaryData<'static>>,
+    /// LED color
+    led_color: Option<Color>,
     /// Whether the PIN is set and device can be locked
     lockable: bool,
     /// Whether the homescreen is locked
     locked: bool,
+    /// Hold to lock button placed everywhere except the `action_bar`
+    virtual_locking_button: Button,
+    /// Hold to lock animation
+    htc_anim: Option<HoldToConfirmAnim>,
 }
 
 pub enum HomescreenMsg {
     Dismissed,
+    Menu,
 }
 
 impl Homescreen {
@@ -51,23 +63,33 @@ impl Homescreen {
         let image = get_homescreen_image();
 
         // Notification
+        // TODO: better notification handling
         let mut notification_level = 4;
-        let hint = if let Some((text, level)) = notification {
+        let mut hint = None;
+        let mut led_color;
+        if let Some((text, level)) = notification {
             notification_level = level;
             if notification_level == 0 {
-                Some(Hint::new_warning_danger(text))
+                led_color = Some(theme::RED);
+                hint = Some(Hint::new_warning_danger(text));
             } else {
-                Some(Hint::new_instruction(text, Some(theme::ICON_INFO)))
+                led_color = Some(theme::YELLOW);
+                hint = Some(Hint::new_instruction(text, Some(theme::ICON_INFO)));
             }
         } else if locked && coinjoin_authorized {
-            Some(Hint::new_instruction_green(
+            led_color = Some(theme::GREEN_LIME);
+            hint = Some(Hint::new_instruction_green(
                 TR::coinjoin__do_not_disconnect,
                 Some(theme::ICON_INFO),
-            ))
+            ));
         } else {
-            None
+            led_color = Some(theme::GREY_LIGHT);
         };
 
+        if locked {
+            led_color = None;
+        }
+
         // ActionBar button
         let button_style = button_homebar_style(notification_level);
         let button = if bootscreen {
@@ -81,15 +103,70 @@ impl Homescreen {
             Button::with_homebar_content(None).styled(button_style)
         };
 
+        let lock_duration = theme::LOCK_HOLD_DURATION;
+
+        // Locking animation
+        let htc_anim = if lockable && !animation_disabled() {
+            Some(
+                HoldToConfirmAnim::new()
+                    .with_color(theme::GREY_LIGHT)
+                    .with_duration(lock_duration),
+            )
+        } else {
+            None
+        };
+
         Ok(Self {
             label: HomeLabel::new(label),
             hint,
             action_bar: ActionBar::new_single(button),
             image,
+            led_color,
             lockable,
             locked,
+            virtual_locking_button: Button::empty().with_long_press(lock_duration),
+            htc_anim,
         })
     }
+
+    fn event_hold(&mut self, ctx: &mut EventCtx, event: Event) -> bool {
+        self.htc_anim.event(ctx, event);
+        if let Some(msg) = self.virtual_locking_button.event(ctx, event) {
+            match msg {
+                ButtonMsg::Pressed => {
+                    if let Some(htc_anim) = &mut self.htc_anim {
+                        htc_anim.start();
+                        ctx.request_anim_frame();
+                        ctx.request_paint();
+                        ctx.disable_swipe();
+                    }
+                }
+                ButtonMsg::Clicked => {
+                    if let Some(htc_anim) = &mut self.htc_anim {
+                        htc_anim.stop();
+                        ctx.request_anim_frame();
+                        ctx.request_paint();
+                        ctx.enable_swipe();
+                    } else {
+                        // Animations disabled
+                        return true;
+                    }
+                }
+                ButtonMsg::Released => {
+                    if let Some(htc_anim) = &mut self.htc_anim {
+                        htc_anim.stop();
+                        ctx.request_anim_frame();
+                        ctx.request_paint();
+                        ctx.enable_swipe();
+                    }
+                }
+                ButtonMsg::LongPressed => {
+                    return true;
+                }
+            }
+        }
+        false
+    }
 }
 
 impl Component for Homescreen {
@@ -114,6 +191,9 @@ impl Component for Homescreen {
 
         self.label.place(label_area);
         self.action_bar.place(bar_area);
+        // Locking button is placed everywhere except the action bar
+        let locking_area = bounds.inset(Insets::bottom(self.action_bar.touch_area().height()));
+        self.virtual_locking_button.place(locking_area);
         bounds
     }
 
@@ -122,14 +202,15 @@ impl Component for Homescreen {
             if self.locked {
                 return Some(HomescreenMsg::Dismissed);
             } else {
-                // TODO: Show menu and handle "lock" action differently
+                return Some(HomescreenMsg::Menu);
+            }
+        }
         if self.lockable {
-                    return Some(HomescreenMsg::Dismissed);
-                }
-            }
-        }
+            Self::event_hold(self, ctx, event).then_some(HomescreenMsg::Dismissed)
+        } else {
             None
         }
+    }
 
     fn render<'s>(&'s self, target: &mut impl Renderer<'s>) {
         if let Some(image) = self.image {
@@ -137,11 +218,12 @@ impl Component for Homescreen {
                 shape::JpegImage::new_image(SCREEN.top_left(), image).render(target);
             }
         } else {
-            render_default_hs(target);
+            render_default_hs(target, self.led_color);
         }
         self.label.render(target);
         self.hint.render(target);
         self.action_bar.render(target);
+        self.htc_anim.render(target);
     }
 }
 
@@ -202,21 +284,109 @@ pub fn check_homescreen_format(image: BinaryData) -> bool {
     }
 }
 
-fn render_default_hs<'a>(target: &mut impl Renderer<'a>) {
+fn render_default_hs<'a>(target: &mut impl Renderer<'a>, led_color: Option<Color>) {
+    const DEFAULT_HS_TILE_ROWS: usize = 4;
+    const DEFAULT_HS_TILE_COLS: usize = 4;
+    const DEFAULT_HS_AREA: Rect = SCREEN.inset(Insets::bottom(140));
+    const DEFAULT_HS_GRID: Grid =
+        Grid::new(DEFAULT_HS_AREA, DEFAULT_HS_TILE_ROWS, DEFAULT_HS_TILE_COLS);
+    const DEFAULT_HS_TILES_2: [(usize, usize); 9] = [
+        (0, 0),
+        (1, 0),
+        (1, 3),
+        (2, 3),
+        (3, 2),
+        (3, 3),
+        (4, 0),
+        (4, 2),
+        (4, 3),
+    ];
+
+    // Layer 1: Base Solid Colour
     shape::Bar::new(SCREEN)
-        .with_fg(theme::BG)
-        .with_bg(theme::BG)
+        .with_bg(GREY_EXTRA_DARK)
         .render(target);
 
-    shape::Circle::new(SCREEN.center(), 48)
-        .with_fg(GREEN_DARK)
-        .with_thickness(4)
+    // Layer 2: Base Gradient overlay
+    for y in SCREEN.y0..SCREEN.y1 {
+        let slice = Rect::new(Point::new(SCREEN.x0, y), Point::new(SCREEN.x1, y + 1));
+        let factor = (y - SCREEN.y0) as f32 / SCREEN.height() as f32;
+        shape::Bar::new(slice)
+            .with_bg(BG)
+            .with_alpha(u8::lerp(u8::MIN, u8::MAX, factor))
             .render(target);
-    shape::Circle::new(SCREEN.center(), 42)
-        .with_fg(GREEN_EXTRA_DARK)
-        .with_thickness(4)
+    }
+
+    // Layer 3: (Optional) LED lightning simulation
+    if let Some(color) = led_color {
+        render_led_simulation(color, target);
+    }
+
+    // Layer 4: Tile pattern
+    // TODO: improve frame rate
+    for row in 0..DEFAULT_HS_TILE_ROWS {
+        for col in 0..DEFAULT_HS_TILE_COLS {
+            let tile_area = DEFAULT_HS_GRID.row_col(row, col);
+            let icon = if DEFAULT_HS_TILES_2.contains(&(row, col)) {
+                theme::ICON_HS_TILE_2.toif
+            } else {
+                theme::ICON_HS_TILE_1.toif
+            };
+            shape::ToifImage::new(tile_area.top_left(), icon)
+                .with_align(Alignment2D::TOP_LEFT)
+                .with_fg(BLACK)
                 .render(target);
         }
+    }
+}
+
+fn render_led_simulation<'a>(color: Color, target: &mut impl Renderer<'a>) {
+    const Y_MAX: i16 = SCREEN.y1 - theme::ACTION_BAR_HEIGHT;
+    const Y_RANGE: i16 = Y_MAX - SCREEN.y0;
+
+    const X_MID: i16 = SCREEN.x0 + SCREEN.width() / 2;
+    const X_HALF_WIDTH: f32 = (SCREEN.width() / 2) as f32;
+
+    // Vertical gradient (color intensity fading from bottom to top)
+    #[allow(clippy::reversed_empty_ranges)] // clippy fails here for T3B1 which has smaller screen
+    for y in SCREEN.y0..Y_MAX {
+        let factor = (y - SCREEN.y0) as f32 / Y_RANGE as f32;
+        let slice = Rect::new(Point::new(SCREEN.x0, y), Point::new(SCREEN.x1, y + 1));
+
+        // Gradient 1 (Overall intensity: 35%)
+        // Stops:     0%,  40%
+        // Opacity: 100%,  20%
+        let factor_grad_1 = (factor / 0.4).clamp(0.2, 1.0);
+        shape::Bar::new(slice)
+            .with_bg(color)
+            .with_alpha(u8::lerp(89, u8::MIN, factor_grad_1))
+            .render(target);
+
+        // Gradient 2 (Overall intensity: 70%)
+        // Stops:     2%, 63%
+        // Opacity: 100%,  0%
+        let factor_grad_2 = ((factor - 0.02) / (0.63 - 0.02)).clamp(0.0, 1.0);
+        let alpha = u8::lerp(179, u8::MIN, factor_grad_2);
+        shape::Bar::new(slice)
+            .with_bg(color)
+            .with_alpha(alpha)
+            .render(target);
+    }
+
+    // Horizontal gradient (transparency increasing toward center)
+    for x in SCREEN.x0..SCREEN.x1 {
+        const WIDTH: i16 = SCREEN.width();
+        let slice = Rect::new(Point::new(x, SCREEN.y0), Point::new(x + 1, Y_MAX));
+        // Gradient 3
+        // Calculate distance from center as a normalized factor (0 at center, 1 at
+        // edges)
+        let dist_from_mid = (x - X_MID).abs() as f32 / X_HALF_WIDTH;
+        shape::Bar::new(slice)
+            .with_bg(BG)
+            .with_alpha(u8::lerp(u8::MIN, u8::MAX, dist_from_mid))
+            .render(target);
+    }
+}
 
 fn get_homescreen_image() -> Option<BinaryData<'static>> {
     if let Ok(image) = get_user_custom_image() {

core/embed/rust/src/ui/layout_eckhart/firmware/vertical_menu.rs

@@ -19,7 +19,7 @@ type VerticalMenuButtons = Vec<Button, MENU_MAX_ITEMS>;
 pub struct VerticalMenu {
     /// Bounds the sliding window of the menu.
     bounds: Rect,
-    /// FUll bounds of the menu, including off-screen items.
+    /// Full bounds of the menu, including off-screen items.
     virtual_bounds: Rect,
     /// Menu items.
     buttons: VerticalMenuButtons,

core/embed/rust/src/ui/layout_eckhart/theme/firmware.rs

@@ -14,6 +14,7 @@ use super::{
     *,
 };
 
+pub const LOCK_HOLD_DURATION: Duration = Duration::from_millis(1500);
 pub const CONFIRM_HOLD_DURATION: Duration = Duration::from_millis(1500);
 pub const ERASE_HOLD_DURATION: Duration = Duration::from_millis(1500);
 

core/embed/rust/src/ui/layout_eckhart/theme/mod.rs

@@ -103,6 +103,16 @@ include_icon!(ICON_BORDER_TR, "layout_eckhart/res/border/TR.toif");
 include_icon!(ICON_PLUS, "layout_eckhart/res/plus.toif");
 include_icon!(ICON_MINUS, "layout_eckhart/res/minus.toif");
 
+// Icon tiles for default homescreen
+include_icon!(
+    ICON_HS_TILE_1,
+    "layout_eckhart/res/defaut_homescreen/hs_tile1.toif"
+);
+include_icon!(
+    ICON_HS_TILE_2,
+    "layout_eckhart/res/defaut_homescreen/hs_tile2.toif"
+);
+
 // Common text styles and button styles must use fonts accessible from both
 // bootloader and firmware
 

core/src/trezor/ui/layouts/homescreen.py

@@ -56,8 +56,8 @@ class HomescreenBase(ui.Layout):
         if not self.should_resume:
             super()._first_paint()
             storage_cache.homescreen_shown = self.RENDER_INDICATOR
-        # else:
-        #     self._paint()
+        else:
+            self._paint()
 
 
 class Homescreen(HomescreenBase):