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 ClipboardItem, Menu, Scene,
19};
20use async_task::Runnable;
21pub use event::Event;
22use std::{any::Any, ops::Range, path::PathBuf, rc::Rc, sync::Arc};
23
24pub trait Platform {
25 fn on_menu_command(&self, callback: Box<dyn FnMut(&str, Option<&dyn Any>)>);
26 fn on_become_active(&self, callback: Box<dyn FnMut()>);
27 fn on_resign_active(&self, callback: Box<dyn FnMut()>);
28 fn on_event(&self, callback: Box<dyn FnMut(Event) -> bool>);
29 fn on_open_files(&self, callback: Box<dyn FnMut(Vec<PathBuf>)>);
30 fn run(&self, on_finish_launching: Box<dyn FnOnce() -> ()>);
31
32 fn dispatcher(&self) -> Arc<dyn Dispatcher>;
33 fn fonts(&self) -> Arc<dyn FontSystem>;
34
35 fn activate(&self, ignoring_other_apps: bool);
36 fn open_window(
37 &self,
38 id: usize,
39 options: WindowOptions,
40 executor: Rc<executor::Foreground>,
41 ) -> Box<dyn Window>;
42 fn key_window_id(&self) -> Option<usize>;
43 fn prompt_for_paths(
44 &self,
45 options: PathPromptOptions,
46 done_fn: Box<dyn FnOnce(Option<Vec<std::path::PathBuf>>)>,
47 );
48 fn quit(&self);
49 fn write_to_clipboard(&self, item: ClipboardItem);
50 fn read_from_clipboard(&self) -> Option<ClipboardItem>;
51 fn set_menus(&self, menus: Vec<Menu>);
52}
53
54pub trait Dispatcher: Send + Sync {
55 fn is_main_thread(&self) -> bool;
56 fn run_on_main_thread(&self, task: Runnable);
57}
58
59pub trait Window: WindowContext {
60 fn on_event(&mut self, callback: Box<dyn FnMut(Event)>);
61 fn on_resize(&mut self, callback: Box<dyn FnMut(&mut dyn WindowContext)>);
62}
63
64pub trait WindowContext {
65 fn size(&self) -> Vector2F;
66 fn scale_factor(&self) -> f32;
67 fn present_scene(&mut self, scene: Scene);
68}
69
70pub struct WindowOptions<'a> {
71 pub bounds: RectF,
72 pub title: Option<&'a str>,
73}
74
75pub struct PathPromptOptions {
76 pub files: bool,
77 pub directories: bool,
78 pub multiple: bool,
79}
80
81pub trait FontSystem: Send + Sync {
82 fn load_family(&self, name: &str) -> anyhow::Result<Vec<FontId>>;
83 fn select_font(
84 &self,
85 font_ids: &[FontId],
86 properties: &FontProperties,
87 ) -> anyhow::Result<FontId>;
88 fn font_metrics(&self, font_id: FontId) -> FontMetrics;
89 fn typographic_bounds(&self, font_id: FontId, glyph_id: GlyphId) -> anyhow::Result<RectF>;
90 fn glyph_for_char(&self, font_id: FontId, ch: char) -> Option<GlyphId>;
91 fn rasterize_glyph(
92 &self,
93 font_id: FontId,
94 font_size: f32,
95 glyph_id: GlyphId,
96 subpixel_shift: Vector2F,
97 scale_factor: f32,
98 ) -> Option<(RectI, Vec<u8>)>;
99 fn layout_str(&self, text: &str, font_size: f32, runs: &[(Range<usize>, FontId)]) -> Line;
100}