1mod events;
2mod keystroke;
3#[cfg(target_os = "macos")]
4mod mac;
5#[cfg(any(test, feature = "test"))]
6mod test;
7
8use crate::{
9 AnyWindowHandle, Bounds, DevicePixels, Font, FontId, FontMetrics, GlyphId, Pixels, Point,
10 RasterizedGlyphId, Result, Scene, ShapedLine, SharedString, Size,
11};
12use anyhow::anyhow;
13use async_task::Runnable;
14use futures::channel::oneshot;
15use seahash::SeaHasher;
16use serde::{Deserialize, Serialize};
17use std::ffi::c_void;
18use std::hash::{Hash, Hasher};
19use std::{
20 any::Any,
21 fmt::{self, Debug, Display},
22 ops::Range,
23 path::{Path, PathBuf},
24 rc::Rc,
25 str::FromStr,
26 sync::Arc,
27};
28use uuid::Uuid;
29
30pub use events::*;
31pub use keystroke::*;
32#[cfg(target_os = "macos")]
33pub use mac::*;
34#[cfg(any(test, feature = "test"))]
35pub use test::*;
36pub use time::UtcOffset;
37
38#[cfg(target_os = "macos")]
39pub(crate) fn current_platform() -> Arc<dyn Platform> {
40 Arc::new(MacPlatform::new())
41}
42
43pub trait Platform: 'static {
44 fn dispatcher(&self) -> Arc<dyn PlatformDispatcher>;
45 fn text_system(&self) -> Arc<dyn PlatformTextSystem>;
46
47 fn run(&self, on_finish_launching: Box<dyn 'static + FnOnce()>);
48 fn quit(&self);
49 fn restart(&self);
50 fn activate(&self, ignoring_other_apps: bool);
51 fn hide(&self);
52 fn hide_other_apps(&self);
53 fn unhide_other_apps(&self);
54
55 fn screens(&self) -> Vec<Rc<dyn PlatformScreen>>;
56 fn screen_by_id(&self, id: ScreenId) -> Option<Rc<dyn PlatformScreen>>;
57 fn main_window(&self) -> Option<AnyWindowHandle>;
58 fn open_window(
59 &self,
60 handle: AnyWindowHandle,
61 options: WindowOptions,
62 ) -> Box<dyn PlatformWindow>;
63 // fn add_status_item(&self, _handle: AnyWindowHandle) -> Box<dyn PlatformWindow>;
64
65 fn open_url(&self, url: &str);
66 fn on_open_urls(&self, callback: Box<dyn FnMut(Vec<String>)>);
67 fn prompt_for_paths(
68 &self,
69 options: PathPromptOptions,
70 ) -> oneshot::Receiver<Option<Vec<PathBuf>>>;
71 fn prompt_for_new_path(&self, directory: &Path) -> oneshot::Receiver<Option<PathBuf>>;
72 fn reveal_path(&self, path: &Path);
73
74 fn on_become_active(&self, callback: Box<dyn FnMut()>);
75 fn on_resign_active(&self, callback: Box<dyn FnMut()>);
76 fn on_quit(&self, callback: Box<dyn FnMut()>);
77 fn on_reopen(&self, callback: Box<dyn FnMut()>);
78 fn on_event(&self, callback: Box<dyn FnMut(Event) -> bool>);
79
80 fn os_name(&self) -> &'static str;
81 fn os_version(&self) -> Result<SemanticVersion>;
82 fn app_version(&self) -> Result<SemanticVersion>;
83 fn app_path(&self) -> Result<PathBuf>;
84 fn local_timezone(&self) -> UtcOffset;
85 fn path_for_auxiliary_executable(&self, name: &str) -> Result<PathBuf>;
86
87 fn set_cursor_style(&self, style: CursorStyle);
88 fn should_auto_hide_scrollbars(&self) -> bool;
89
90 fn write_to_clipboard(&self, item: ClipboardItem);
91 fn read_from_clipboard(&self) -> Option<ClipboardItem>;
92
93 fn write_credentials(&self, url: &str, username: &str, password: &[u8]) -> Result<()>;
94 fn read_credentials(&self, url: &str) -> Result<Option<(String, Vec<u8>)>>;
95 fn delete_credentials(&self, url: &str) -> Result<()>;
96}
97
98pub trait PlatformScreen: Debug {
99 fn id(&self) -> Option<ScreenId>;
100 fn handle(&self) -> PlatformScreenHandle;
101 fn as_any(&self) -> &dyn Any;
102 fn bounds(&self) -> Bounds<Pixels>;
103 fn content_bounds(&self) -> Bounds<Pixels>;
104}
105
106pub struct PlatformScreenHandle(pub *mut c_void);
107
108impl Debug for PlatformScreenHandle {
109 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
110 write!(f, "PlatformScreenHandle({:p})", self.0)
111 }
112}
113
114unsafe impl Send for PlatformScreenHandle {}
115
116pub trait PlatformWindow {
117 fn bounds(&self) -> WindowBounds;
118 fn content_size(&self) -> Size<Pixels>;
119 fn scale_factor(&self) -> f32;
120 fn titlebar_height(&self) -> Pixels;
121 fn appearance(&self) -> WindowAppearance;
122 fn screen(&self) -> Rc<dyn PlatformScreen>;
123 fn mouse_position(&self) -> Point<Pixels>;
124 fn as_any_mut(&mut self) -> &mut dyn Any;
125 fn set_input_handler(&mut self, input_handler: Box<dyn PlatformInputHandler>);
126 fn prompt(
127 &self,
128 level: WindowPromptLevel,
129 msg: &str,
130 answers: &[&str],
131 ) -> oneshot::Receiver<usize>;
132 fn activate(&self);
133 fn set_title(&mut self, title: &str);
134 fn set_edited(&mut self, edited: bool);
135 fn show_character_palette(&self);
136 fn minimize(&self);
137 fn zoom(&self);
138 fn toggle_full_screen(&self);
139 fn on_event(&self, callback: Box<dyn FnMut(Event) -> bool>);
140 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>);
141 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>);
142 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>);
143 fn on_moved(&self, callback: Box<dyn FnMut()>);
144 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>);
145 fn on_close(&self, callback: Box<dyn FnOnce()>);
146 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>);
147 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool;
148 fn draw(&self, scene: Scene);
149
150 fn glyph_atlas(&self) -> Arc<dyn PlatformAtlas<RasterizedGlyphId>>;
151}
152
153pub trait PlatformDispatcher: Send + Sync {
154 fn is_main_thread(&self) -> bool;
155 fn run_on_main_thread(&self, task: Runnable);
156}
157
158pub trait PlatformTextSystem: Send + Sync {
159 fn add_fonts(&self, fonts: &[Arc<Vec<u8>>]) -> Result<()>;
160 fn all_font_families(&self) -> Vec<String>;
161 fn font_id(&self, descriptor: &Font) -> Result<FontId>;
162 fn font_metrics(&self, font_id: FontId) -> FontMetrics;
163 fn typographic_bounds(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Bounds<f32>>;
164 fn advance(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Size<f32>>;
165 fn glyph_for_char(&self, font_id: FontId, ch: char) -> Option<GlyphId>;
166 fn rasterize_glyph(
167 &self,
168 glyph_id: &RasterizedGlyphId,
169 ) -> Result<(Bounds<DevicePixels>, Vec<u8>)>;
170 fn layout_line(&self, text: &str, font_size: Pixels, runs: &[(usize, FontId)]) -> ShapedLine;
171 fn wrap_line(
172 &self,
173 text: &str,
174 font_id: FontId,
175 font_size: Pixels,
176 width: Pixels,
177 ) -> Vec<usize>;
178}
179
180pub trait PlatformAtlas<Key>: Send + Sync {
181 fn get_or_insert_with(
182 &self,
183 key: &Key,
184 build: &mut dyn FnMut() -> Result<(Size<DevicePixels>, Vec<u8>)>,
185 ) -> Result<AtlasTile>;
186
187 fn clear(&self);
188}
189
190#[derive(Clone, Debug, PartialEq, Eq)]
191#[repr(C)]
192pub struct AtlasTile {
193 pub(crate) texture_id: AtlasTextureId,
194 pub(crate) tile_id: TileId,
195 pub(crate) bounds_in_atlas: Bounds<DevicePixels>,
196}
197
198#[derive(Clone, Copy, Debug, PartialEq, Eq)]
199#[repr(C)]
200pub(crate) struct AtlasTextureId(pub(crate) usize);
201
202#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
203#[repr(C)]
204pub(crate) struct TileId(pub(crate) u32);
205
206impl From<etagere::AllocId> for TileId {
207 fn from(id: etagere::AllocId) -> Self {
208 Self(id.serialize())
209 }
210}
211
212impl From<TileId> for etagere::AllocId {
213 fn from(id: TileId) -> Self {
214 Self::deserialize(id.0)
215 }
216}
217
218pub trait PlatformInputHandler {
219 fn selected_text_range(&self) -> Option<Range<usize>>;
220 fn marked_text_range(&self) -> Option<Range<usize>>;
221 fn text_for_range(&self, range_utf16: Range<usize>) -> Option<String>;
222 fn replace_text_in_range(&mut self, replacement_range: Option<Range<usize>>, text: &str);
223 fn replace_and_mark_text_in_range(
224 &mut self,
225 range_utf16: Option<Range<usize>>,
226 new_text: &str,
227 new_selected_range: Option<Range<usize>>,
228 );
229 fn unmark_text(&mut self);
230 fn bounds_for_range(&self, range_utf16: Range<usize>) -> Option<Bounds<f32>>;
231}
232
233#[derive(Copy, Clone, Debug, PartialEq)]
234pub struct ScreenId(pub(crate) Uuid);
235
236#[derive(Copy, Clone, Debug)]
237pub enum RasterizationOptions {
238 Alpha,
239 Bgra,
240}
241
242#[derive(Debug)]
243pub struct WindowOptions {
244 pub bounds: WindowBounds,
245 pub titlebar: Option<TitlebarOptions>,
246 pub center: bool,
247 pub focus: bool,
248 pub show: bool,
249 pub kind: WindowKind,
250 pub is_movable: bool,
251 pub screen: Option<PlatformScreenHandle>,
252}
253
254impl Default for WindowOptions {
255 fn default() -> Self {
256 Self {
257 bounds: WindowBounds::default(),
258 titlebar: Some(TitlebarOptions {
259 title: Default::default(),
260 appears_transparent: Default::default(),
261 traffic_light_position: Default::default(),
262 }),
263 center: false,
264 focus: true,
265 show: true,
266 kind: WindowKind::Normal,
267 is_movable: true,
268 screen: None,
269 }
270 }
271}
272
273#[derive(Debug, Default)]
274pub struct TitlebarOptions {
275 pub title: Option<SharedString>,
276 pub appears_transparent: bool,
277 pub traffic_light_position: Option<Point<Pixels>>,
278}
279
280#[derive(Copy, Clone, Debug)]
281pub enum Appearance {
282 Light,
283 VibrantLight,
284 Dark,
285 VibrantDark,
286}
287
288impl Default for Appearance {
289 fn default() -> Self {
290 Self::Light
291 }
292}
293
294#[derive(Copy, Clone, Debug, PartialEq, Eq)]
295pub enum WindowKind {
296 Normal,
297 PopUp,
298}
299
300#[derive(Copy, Clone, Debug, PartialEq, Default)]
301pub enum WindowBounds {
302 Fullscreen,
303 #[default]
304 Maximized,
305 Fixed(Bounds<Pixels>),
306}
307
308#[derive(Copy, Clone, Debug)]
309pub enum WindowAppearance {
310 Light,
311 VibrantLight,
312 Dark,
313 VibrantDark,
314}
315
316impl Default for WindowAppearance {
317 fn default() -> Self {
318 Self::Light
319 }
320}
321
322#[derive(Copy, Clone, Debug, PartialEq, Default)]
323pub enum WindowPromptLevel {
324 #[default]
325 Info,
326 Warning,
327 Critical,
328}
329
330#[derive(Copy, Clone, Debug)]
331pub struct PathPromptOptions {
332 pub files: bool,
333 pub directories: bool,
334 pub multiple: bool,
335}
336
337#[derive(Copy, Clone, Debug)]
338pub enum PromptLevel {
339 Info,
340 Warning,
341 Critical,
342}
343
344#[derive(Copy, Clone, Debug)]
345pub enum CursorStyle {
346 Arrow,
347 ResizeLeftRight,
348 ResizeUpDown,
349 PointingHand,
350 IBeam,
351}
352
353impl Default for CursorStyle {
354 fn default() -> Self {
355 Self::Arrow
356 }
357}
358
359#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
360pub struct SemanticVersion {
361 major: usize,
362 minor: usize,
363 patch: usize,
364}
365
366impl FromStr for SemanticVersion {
367 type Err = anyhow::Error;
368
369 fn from_str(s: &str) -> Result<Self> {
370 let mut components = s.trim().split('.');
371 let major = components
372 .next()
373 .ok_or_else(|| anyhow!("missing major version number"))?
374 .parse()?;
375 let minor = components
376 .next()
377 .ok_or_else(|| anyhow!("missing minor version number"))?
378 .parse()?;
379 let patch = components
380 .next()
381 .ok_or_else(|| anyhow!("missing patch version number"))?
382 .parse()?;
383 Ok(Self {
384 major,
385 minor,
386 patch,
387 })
388 }
389}
390
391impl Display for SemanticVersion {
392 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
393 write!(f, "{}.{}.{}", self.major, self.minor, self.patch)
394 }
395}
396
397#[derive(Clone, Debug, Eq, PartialEq)]
398pub struct ClipboardItem {
399 pub(crate) text: String,
400 pub(crate) metadata: Option<String>,
401}
402
403impl ClipboardItem {
404 pub fn new(text: String) -> Self {
405 Self {
406 text,
407 metadata: None,
408 }
409 }
410
411 pub fn with_metadata<T: Serialize>(mut self, metadata: T) -> Self {
412 self.metadata = Some(serde_json::to_string(&metadata).unwrap());
413 self
414 }
415
416 pub fn text(&self) -> &String {
417 &self.text
418 }
419
420 pub fn metadata<T>(&self) -> Option<T>
421 where
422 T: for<'a> Deserialize<'a>,
423 {
424 self.metadata
425 .as_ref()
426 .and_then(|m| serde_json::from_str(m).ok())
427 }
428
429 pub(crate) fn text_hash(text: &str) -> u64 {
430 let mut hasher = SeaHasher::new();
431 text.hash(&mut hasher);
432 hasher.finish()
433 }
434}