1mod event;
 2#[cfg(target_os = "macos")]
 3pub mod mac;
 4pub mod test;
 5pub mod current {
 6    #[cfg(target_os = "macos")]
 7    pub use super::mac::*;
 8}
 9
10use crate::{
11    executor,
12    fonts::{FontId, GlyphId, Metrics as FontMetrics, Properties as FontProperties},
13    geometry::{
14        rect::{RectF, RectI},
15        vector::Vector2F,
16    },
17    text_layout::Line,
18    Scene,
19};
20use anyhow::Result;
21use async_task::Runnable;
22pub use event::Event;
23use std::{ops::Range, path::PathBuf, rc::Rc, sync::Arc};
24
25pub trait Runner {
26    fn on_finish_launching<F: 'static + FnOnce()>(self, callback: F) -> Self where;
27    fn on_become_active<F: 'static + FnMut()>(self, callback: F) -> Self;
28    fn on_resign_active<F: 'static + FnMut()>(self, callback: F) -> Self;
29    fn on_event<F: 'static + FnMut(Event) -> bool>(self, callback: F) -> Self;
30    fn on_open_files<F: 'static + FnMut(Vec<PathBuf>)>(self, callback: F) -> Self;
31    fn run(self);
32}
33
34pub trait App {
35    fn dispatcher(&self) -> Arc<dyn Dispatcher>;
36    fn activate(&self, ignoring_other_apps: bool);
37    fn open_window(
38        &self,
39        options: WindowOptions,
40        executor: Rc<executor::Foreground>,
41    ) -> Result<Box<dyn Window>>;
42    fn fonts(&self) -> Arc<dyn FontSystem>;
43    fn copy(&self, text: &str);
44}
45
46pub trait Dispatcher: Send + Sync {
47    fn is_main_thread(&self) -> bool;
48    fn run_on_main_thread(&self, task: Runnable);
49}
50
51pub trait Window: WindowContext {
52    fn on_event(&mut self, callback: Box<dyn FnMut(Event)>);
53    fn on_resize(&mut self, callback: Box<dyn FnMut(&mut dyn WindowContext)>);
54}
55
56pub trait WindowContext {
57    fn size(&self) -> Vector2F;
58    fn scale_factor(&self) -> f32;
59    fn present_scene(&mut self, scene: Scene);
60}
61
62pub struct WindowOptions<'a> {
63    pub bounds: RectF,
64    pub title: Option<&'a str>,
65}
66
67pub trait FontSystem: Send + Sync {
68    fn load_family(&self, name: &str) -> anyhow::Result<Vec<FontId>>;
69    fn select_font(
70        &self,
71        font_ids: &[FontId],
72        properties: &FontProperties,
73    ) -> anyhow::Result<FontId>;
74    fn font_metrics(&self, font_id: FontId) -> FontMetrics;
75    fn typographic_bounds(&self, font_id: FontId, glyph_id: GlyphId) -> anyhow::Result<RectF>;
76    fn glyph_for_char(&self, font_id: FontId, ch: char) -> Option<GlyphId>;
77    fn rasterize_glyph(
78        &self,
79        font_id: FontId,
80        font_size: f32,
81        glyph_id: GlyphId,
82        subpixel_shift: Vector2F,
83        scale_factor: f32,
84    ) -> Option<(RectI, Vec<u8>)>;
85    fn layout_str(&self, text: &str, font_size: f32, runs: &[(Range<usize>, FontId)]) -> Line;
86}