| 1 | //! The Equalizer page: the presets, and the bands of the custom ones. |
| 2 | |
| 3 | use budctl_core::status::{EqBand, EqPreset}; |
| 4 | use iced::widget::slider::Slider; |
| 5 | use iced::widget::{Row, column, container, row, slider, space, text, vertical_slider}; |
| 6 | use iced::{Alignment, Border, Element, Length}; |
| 7 | |
| 8 | use crate::buds::{self, Buds}; |
| 9 | use crate::icons::{self, Icon}; |
| 10 | use crate::theme::Look; |
| 11 | use crate::ui; |
| 12 | use crate::{Draft, Item, Marks, Message}; |
| 13 | |
| 14 | /// Shown instead of a subtitle while a write is on its way. |
| 15 | const SAVING: &str = "Saving…"; |
| 16 | |
| 17 | /// What the keyboard cursor can rest on, top to bottom, as [`view`] shows them: each preset, |
| 18 | /// then each band of each custom preset, then the bass level. |
| 19 | pub fn items(buds: &Buds) -> Vec<Item> { |
| 20 | let mut items = Vec::new(); |
| 21 | if let Some(eq) = &buds.eq { |
| 22 | items.extend(eq.presets.iter().map(|p| Item::Preset(p.id))); |
| 23 | for preset in eq.presets.iter().filter(|p| p.custom) { |
| 24 | items.extend(preset.bands.iter().map(|band| Item::Band(preset.id, band.hz))); |
| 25 | } |
| 26 | } |
| 27 | if buds.bass_range.is_some() { |
| 28 | items.push(Item::Bass); |
| 29 | } |
| 30 | items |
| 31 | } |
| 32 | |
| 33 | /// `draft`: bands moved on the screen and not saved on the buds yet; `bass`: a bass level |
| 34 | /// likewise. |
| 35 | pub fn view<'a>( |
| 36 | look: Look, |
| 37 | buds: &'a Buds, |
| 38 | draft: Option<&'a Draft>, |
| 39 | bass: Option<i8>, |
| 40 | marks: Marks, |
| 41 | ) -> Element<'a, Message> { |
| 42 | let title = ui::title(look, "Equalizer"); |
| 43 | let bass = buds |
| 44 | .bass_range |
| 45 | .map(|range| bass_level(look, range, bass.or(buds.bass), marks)); |
| 46 | let Some(eq) = &buds.eq else { |
| 47 | let none = text("These buds did not list their presets.") |
| 48 | .size(14) |
| 49 | .color(look.p.dim); |
| 50 | return column![title, none].push(bass).spacing(12).into(); |
| 51 | }; |
| 52 | let current = eq.current.as_deref(); |
| 53 | let rows = eq |
| 54 | .presets |
| 55 | .iter() |
| 56 | .map(|preset| { |
| 57 | let chosen = current == Some(buds::key(preset).as_str()); |
| 58 | let subtitle = if marks.pending.contains(&Item::Preset(preset.id)) { |
| 59 | SAVING |
| 60 | } else if preset.custom { |
| 61 | "Your preset" |
| 62 | } else { |
| 63 | "Built in" |
| 64 | }; |
| 65 | let mark: Element<'a, Message> = if chosen { |
| 66 | icons::icon(Icon::Check, 20.0, look.p.icon) |
| 67 | } else { |
| 68 | space().width(20).into() |
| 69 | }; |
| 70 | ui::setting( |
| 71 | look, |
| 72 | Icon::Equalizer, |
| 73 | buds::shown_name(preset), |
| 74 | Some(subtitle.to_owned()), |
| 75 | mark, |
| 76 | Some(Message::Preset(preset.id)), |
| 77 | marks.focus == Some(Item::Preset(preset.id)), |
| 78 | ) |
| 79 | }) |
| 80 | .collect(); |
| 81 | eq.presets |
| 82 | .iter() |
| 83 | .filter(|p| p.custom) |
| 84 | .fold(column![title, ui::card(look, rows)].spacing(18), |page, preset| { |
| 85 | page.push(bands(look, preset, draft, marks)) |
| 86 | }) |
| 87 | .push(bass) |
| 88 | .into() |
| 89 | } |
| 90 | |
| 91 | /// The bass level: the buds take it but do not report it, so the page shows the last level |
| 92 | /// set from here, if any. |
| 93 | fn bass_level<'a>(look: Look, (low, high): (i8, i8), level: Option<i8>, marks: Marks) -> Element<'a, Message> { |
| 94 | let p = look.p; |
| 95 | let focused = marks.focus == Some(Item::Bass); |
| 96 | let saving = marks |
| 97 | .pending |
| 98 | .contains(&Item::Bass) |
| 99 | .then(|| text(SAVING).size(13).color(p.icon)); |
| 100 | let shown = level.map_or_else(|| "Not set".to_owned(), gain); |
| 101 | let heading = row![ |
| 102 | text("Bass level").size(16).font(look.medium()).color(p.fg), |
| 103 | text(shown) |
| 104 | .size(14) |
| 105 | .font(look.medium()) |
| 106 | .color(p.dim) |
| 107 | .width(Length::Fill) |
| 108 | ] |
| 109 | .push(saving) |
| 110 | .spacing(10) |
| 111 | .align_y(Alignment::Center); |
| 112 | let note = text("The buds do not report their bass level: this is the last one set from here.") |
| 113 | .size(13) |
| 114 | .color(p.dim); |
| 115 | let slider: Slider<'a, i16, Message> = slider( |
| 116 | i16::from(low)..=i16::from(high), |
| 117 | i16::from(level.unwrap_or(0)), |
| 118 | |level| Message::Bass { |
| 119 | level: i8::try_from(level).unwrap_or(0), |
| 120 | save: false, |
| 121 | }, |
| 122 | ) |
| 123 | .on_release(Message::SaveBass) |
| 124 | .style(move |_, _| slider::Style { |
| 125 | rail: slider::Rail { |
| 126 | backgrounds: (p.accent.into(), p.surface_highest.into()), |
| 127 | width: 6.0, |
| 128 | border: Border::default().rounded(3), |
| 129 | }, |
| 130 | handle: slider::Handle { |
| 131 | shape: slider::HandleShape::Circle { radius: 9.0 }, |
| 132 | background: p.fg.into(), |
| 133 | border_width: 2.0, |
| 134 | border_color: p.accent, |
| 135 | }, |
| 136 | }); |
| 137 | let scale = row![ |
| 138 | text(gain(low)).size(12).color(p.dim), |
| 139 | space::horizontal(), |
| 140 | text("0").size(12).color(p.dim), |
| 141 | space::horizontal(), |
| 142 | text(gain(high)).size(12).color(p.dim) |
| 143 | ]; |
| 144 | let content = container(column![heading, note, slider, scale].spacing(12)) |
| 145 | .padding(12) |
| 146 | .style(move |_| container::Style { |
| 147 | background: focused.then_some(p.surface_high.into()), |
| 148 | border: Border { |
| 149 | color: p.accent, |
| 150 | width: if focused { 2.0 } else { 0.0 }, |
| 151 | radius: 12.0.into(), |
| 152 | }, |
| 153 | ..container::Style::default() |
| 154 | }); |
| 155 | ui::panel(look, content.into()) |
| 156 | } |
| 157 | |
| 158 | /// A custom preset's bands, one slider each. |
| 159 | fn bands<'a>(look: Look, preset: &'a EqPreset, draft: Option<&'a Draft>, marks: Marks) -> Element<'a, Message> { |
| 160 | let p = look.p; |
| 161 | let id = preset.id; |
| 162 | let gains: &[EqBand] = match draft { |
| 163 | Some(draft) if draft.preset == id => &draft.bands, |
| 164 | _ => &preset.bands, |
| 165 | }; |
| 166 | let (low, high) = preset.range.unwrap_or((-6, 6)); |
| 167 | let saving = marks |
| 168 | .pending |
| 169 | .contains(&Item::Preset(id)) |
| 170 | .then(|| text(SAVING).size(13).color(p.icon)); |
| 171 | let heading = row![ |
| 172 | text(preset.name.as_str()).size(16).font(look.medium()).color(p.fg), |
| 173 | text(format!("{low:+} to {high:+} dB")) |
| 174 | .size(13) |
| 175 | .color(p.dim) |
| 176 | .width(Length::Fill) |
| 177 | ] |
| 178 | .push(saving) |
| 179 | .spacing(10) |
| 180 | .align_y(Alignment::Center); |
| 181 | let sliders = gains.iter().fold(Row::new().spacing(6), |sliders, &band| { |
| 182 | let focused = marks.focus == Some(Item::Band(id, band.hz)); |
| 183 | let hz = band.hz; |
| 184 | let slider = vertical_slider(i16::from(low)..=i16::from(high), i16::from(band.gain), move |gain| { |
| 185 | Message::Band { |
| 186 | preset: id, |
| 187 | hz, |
| 188 | gain: i8::try_from(gain).unwrap_or(0), |
| 189 | save: false, |
| 190 | } |
| 191 | }) |
| 192 | .on_release(Message::SaveBands(id)) |
| 193 | .height(170) |
| 194 | .style(move |_, _| slider::Style { |
| 195 | rail: slider::Rail { |
| 196 | backgrounds: (p.accent.into(), p.surface_highest.into()), |
| 197 | width: 6.0, |
| 198 | border: Border::default().rounded(3), |
| 199 | }, |
| 200 | handle: slider::Handle { |
| 201 | shape: slider::HandleShape::Circle { radius: 9.0 }, |
| 202 | background: p.fg.into(), |
| 203 | border_width: 2.0, |
| 204 | border_color: p.accent, |
| 205 | }, |
| 206 | }); |
| 207 | let band = column![ |
| 208 | text(gain(band.gain)).size(14).font(look.medium()).color(p.fg), |
| 209 | slider, |
| 210 | text(frequency(hz)).size(12).color(p.dim) |
| 211 | ] |
| 212 | .spacing(10) |
| 213 | .align_x(Alignment::Center); |
| 214 | sliders.push( |
| 215 | container(band) |
| 216 | .center_x(Length::Fill) |
| 217 | .padding([12, 0]) |
| 218 | .style(move |_| container::Style { |
| 219 | background: focused.then_some(p.surface_high.into()), |
| 220 | border: Border { |
| 221 | color: p.accent, |
| 222 | width: if focused { 2.0 } else { 0.0 }, |
| 223 | radius: 12.0.into(), |
| 224 | }, |
| 225 | ..container::Style::default() |
| 226 | }), |
| 227 | ) |
| 228 | }); |
| 229 | ui::panel(look, column![heading, sliders].spacing(16).into()) |
| 230 | } |
| 231 | |
| 232 | /// `3` → "+3", `0` → "0", `-2` → "-2". |
| 233 | fn gain(db: i8) -> String { |
| 234 | if db == 0 { "0".to_owned() } else { format!("{db:+}") } |
| 235 | } |
| 236 | |
| 237 | /// `50` → "50 Hz", `16000` → "16 kHz". |
| 238 | fn frequency(hz: u16) -> String { |
| 239 | if hz >= 1000 && hz.is_multiple_of(1000) { |
| 240 | format!("{} kHz", hz / 1000) |
| 241 | } else { |
| 242 | format!("{hz} Hz") |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | #[cfg(test)] |
| 247 | mod tests { |
| 248 | use super::*; |
| 249 | |
| 250 | #[test] |
| 251 | fn items_follow_the_page() { |
| 252 | let items = items(&buds::demo()); |
| 253 | assert_eq!(items.len(), 5 + 6 + 1); |
| 254 | assert_eq!(items.first(), Some(&Item::Preset(0))); |
| 255 | assert_eq!(items.get(5), Some(&Item::Band(4, 50))); |
| 256 | assert_eq!(items.get(10), Some(&Item::Band(4, 16000))); |
| 257 | assert_eq!(items.last(), Some(&Item::Bass)); |
| 258 | assert!(super::items(&buds::unknown()).is_empty()); |
| 259 | } |
| 260 | |
| 261 | #[test] |
| 262 | fn gains() { |
| 263 | assert_eq!(gain(3), "+3"); |
| 264 | assert_eq!(gain(0), "0"); |
| 265 | assert_eq!(gain(-6), "-6"); |
| 266 | } |
| 267 | |
| 268 | #[test] |
| 269 | fn frequencies() { |
| 270 | assert_eq!(frequency(50), "50 Hz"); |
| 271 | assert_eq!(frequency(1000), "1 kHz"); |
| 272 | assert_eq!(frequency(16000), "16 kHz"); |
| 273 | assert_eq!(frequency(62), "62 Hz"); |
| 274 | } |
| 275 | } |