pub fn theme() -> ThemeExamples found in repository?
examples/shapes_stage.rs (line 30)
24 fn frame(&mut self, frame: &Frame) {
25 let (w, h) = self.stage.size();
26 if w == 0 || h == 0 {
27 // No pixel geometry yet: a resize will follow.
28 return;
29 }
30 let theme = view::theme();
31 let (fg, bg, accent) = (
32 Rgba::hex(theme.fg),
33 Rgba::hex(theme.bg),
34 Rgba::hex(theme.accent),
35 );
36 let t = (frame.now_ms() % 4000) as f32 / 4000.0;
37
38 // A full repaint: nothing is carried forward from the last frame.
39 self.stage.clear(bg);
40 let panel = Area::new(8, 8, w.saturating_sub(16), h.saturating_sub(16));
41 self.stage
42 .fill_rounded_rect(panel, 12, Rgba::hex(theme.recede_bg));
43 self.stage
44 .rounded_rect(panel, 12, Rgba::hex(theme.recede_fg));
45
46 let (cx, cy) = (w as f32 / 2.0, h as f32 / 2.0);
47 let radius = (w.min(h) / 4) as f32;
48 let angle = t * core::f32::consts::TAU;
49 // `no_std` has no `f32::sin`: the SDK re-exports `libm`. The dot
50 // moves between pixels; the shapes antialias it there.
51 let dot = (
52 cx + radius * libm::cosf(angle),
53 cy + radius * libm::sinf(angle),
54 );
55 self.stage
56 .circle((cx, cy), radius, Rgba::hex(theme.recede_fg));
57 self.stage
58 .line((cx as i32, cy as i32), (dot.0 as i32, dot.1 as i32), accent);
59 self.stage.fill_circle(dot, 6.0, accent);
60
61 let bar = Area::new(24, h as i32 - 40, w.saturating_sub(48), 8);
62 self.stage
63 .bar(bar, t, accent, Rgba::hex(theme.recede_fg).with_alpha(96));
64 self.stage.label(24, 24, "shapes", fg);
65 let _ = self.stage.commit();
66
67 match frame.power() {
68 Power::Mains => frame.request_frame(),
69 Power::SavePower => frame.wake_after(1000),
70 }
71 }