1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168

use map_gui::tools::{ChooseSomething, ColorLegend};
use map_gui::ID;
use map_model::AmenityType;
use widgetry::{
    Cached, Choice, Color, Drawable, EventCtx, GfxCtx, HorizontalAlignment, Line, Panel,
    SimpleState, State, TextExt, Transition, VerticalAlignment, Widget,
};

use crate::isochrone::{draw_isochrone, BorderIsochrone, Isochrone, Options};
use crate::viewer::{draw_star, HoverKey, HoverOnBuilding};
use crate::App;

/// Calculate isochrones around each amenity on a map and merge them together using the min value
pub struct FindAmenity;

impl FindAmenity {
    pub fn new_state(ctx: &mut EventCtx, options: Options) -> Box<dyn State<App>> {
        ChooseSomething::new_state(
            ctx,
            "Choose an amenity",
            AmenityType::all()
                .into_iter()
                .map(|at| Choice::new(at.to_string(), at))
                .collect(),
            Box::new(move |at, ctx, app| {
                let multi_isochrone = create_multi_isochrone(ctx, app, at, options.clone());
                let border_isochrone = create_border_isochrone(ctx, app, options);
                return Transition::Replace(Results::new_state(
                    ctx,
                    app,
                    multi_isochrone,
                    border_isochrone,
                    at,
                ));
            }),
        )
    }
}

/// For every one of the requested amenity on the map, draw an isochrone
fn create_multi_isochrone(
    ctx: &mut EventCtx,
    app: &App,
    category: AmenityType,
    options: Options,
) -> Isochrone {
    let map = &app.map;
    // For a category, find all matching stores
    let mut stores = Vec::new();
    for b in map.all_buildings() {
        if b.has_amenity(category) {
            stores.push(b.id);
        }
    }
    Isochrone::new(ctx, app, stores, options)
}

/// Draw an isochrone from every intersection border
fn create_border_isochrone(ctx: &mut EventCtx, app: &App, options: Options) -> BorderIsochrone {
    let mut all_intersections = Vec::new();
    for i in app.map.all_intersections() {
        if i.is_border() {
            all_intersections.push(i.id);
        }
    }
    BorderIsochrone::new(ctx, app, all_intersections, options)
}

struct Results {
    draw: Drawable,
    isochrone: Isochrone,
    hovering_on_bldg: Cached<HoverKey, HoverOnBuilding>,
}

impl Results {
    fn new_state(
        ctx: &mut EventCtx,
        app: &App,
        isochrone: Isochrone,
        border_isochrone: BorderIsochrone,
        category: AmenityType,
    ) -> Box<dyn State<App>> {
        let panel = Panel::new_builder(Widget::col(vec![
            Widget::row(vec![
                Line(format!("{} within 15 minutes", category))
                    .small_heading()
                    .into_widget(ctx),
                ctx.style().btn_close_widget(ctx),
            ]),
            format!("{} matching amenities", isochrone.start.len()).text_widget(ctx),
            ColorLegend::categories(
                ctx,
                vec![
                    (Color::GREEN, "5 mins"),
                    (Color::ORANGE, "10 mins"),
                    (Color::RED, "15 mins"),
                ],
            ),
            ColorLegend::row(
                ctx,
                Color::rgb(0, 0, 0).alpha(0.3),
                "< 15 mins from border (amenity could exist off map)",
            ),
        ]))
        .aligned(HorizontalAlignment::RightInset, VerticalAlignment::TopInset)
        .build(ctx);

        let mut batch = draw_isochrone(
            app,
            &border_isochrone.time_to_reach_building,
            &border_isochrone.thresholds,
            &border_isochrone.colors,
        );
        batch.append(draw_isochrone(
            app,
            &isochrone.time_to_reach_building,
            &isochrone.thresholds,
            &isochrone.colors,
        ));
        for &start in &isochrone.start {
            batch.append(draw_star(ctx, app.map.get_b(start)));
        }

        <dyn SimpleState<_>>::new_state(
            panel,
            Box::new(Results {
                draw: ctx.upload(batch),
                isochrone,
                hovering_on_bldg: Cached::new(),
            }),
        )
    }
}

impl SimpleState<App> for Results {
    fn on_click(&mut self, _: &mut EventCtx, _: &mut App, x: &str, _: &Panel) -> Transition<App> {
        match x {
            "close" => Transition::Pop,
            _ => unreachable!(),
        }
    }

    fn other_event(&mut self, ctx: &mut EventCtx, app: &mut App) -> Transition<App> {
        ctx.canvas_movement();

        if ctx.redo_mouseover() {
            let isochrone = &self.isochrone;
            self.hovering_on_bldg
                .update(HoverOnBuilding::key(ctx, app), |key| {
                    HoverOnBuilding::value(ctx, app, key, isochrone)
                });
            // Also update this to conveniently get an outline drawn. Note we don't want to do this
            // inside the callback above, because it doesn't run when the key becomes None.
            app.current_selection = self.hovering_on_bldg.key().map(|(b, _)| ID::Building(b));
        }
        Transition::Keep
    }

    fn draw(&self, g: &mut GfxCtx, _: &App) {
        g.redraw(&self.isochrone.draw);

        if let Some(hover) = self.hovering_on_bldg.value() {
            g.draw_mouse_tooltip(hover.tooltip.clone());
            g.redraw(&hover.drawn_route);
        }
        g.redraw(&self.draw);
    }
}