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gpui.rs

347 lines · 10.3 KB · rust
1#![doc = include_str!("../README.md")]
2#![warn(missing_docs)]
3#![allow(clippy::type_complexity)] // Not useful, GPUI makes heavy use of callbacks
4#![allow(clippy::collapsible_else_if)] // False positives in platform specific code
5#![allow(unused_mut)] // False positives in platform specific code
6
7extern crate self as gpui;
8#[doc(hidden)]
9pub static GPUI_MANIFEST_DIR: &'static str = env!("CARGO_MANIFEST_DIR");
10#[macro_use]
11mod action;
12mod app;
13
14mod arena;
15mod asset_cache;
16mod assets;
17mod bounds_tree;
18mod color;
19/// The default colors used by GPUI.
20pub mod colors;
21mod element;
22mod elements;
23mod executor;
24mod platform_scheduler;
25pub(crate) use platform_scheduler::PlatformScheduler;
26mod geometry;
27mod gestures;
28mod global;
29mod input;
30mod inspector;
31mod interactive;
32mod key_dispatch;
33mod keymap;
34mod path_builder;
35mod platform;
36pub mod prelude;
37/// Profiling utilities for task, frame, and thread performance tracking.
38pub mod profiler;
39#[cfg(any(
40    test,
41    target_os = "windows",
42    target_os = "linux",
43    target_family = "wasm",
44    feature = "bench"
45))]
46#[expect(missing_docs)]
47pub mod queue;
48mod scene;
49mod shared_uri;
50mod style;
51mod styled;
52mod subscription;
53mod svg_renderer;
54mod tab_stop;
55mod taffy;
56#[cfg(any(test, feature = "test-support"))]
57pub mod test;
58mod text_system;
59mod util;
60mod view;
61mod window;
62
63#[cfg(any(test, feature = "test-support"))]
64pub use proptest;
65
66#[cfg(doc)]
67pub mod _accessibility;
68#[cfg(doc)]
69pub mod _ownership_and_data_flow;
70
71/// Do not touch, here be dragons for use by gpui_macros and such.
72#[doc(hidden)]
73pub mod private {
74    pub use anyhow;
75    pub use inventory;
76    pub use schemars;
77    pub use serde;
78    pub use serde_json;
79}
80
81mod seal {
82    /// A mechanism for restricting implementations of a trait to only those in GPUI.
83    /// See: <https://predr.ag/blog/definitive-guide-to-sealed-traits-in-rust/>
84    pub trait Sealed {}
85}
86
87pub use accesskit;
88pub use accesskit::Action as AccessibleAction;
89pub use accesskit::{Orientation, Role, Toggled};
90pub use action::*;
91pub use anyhow::Result;
92pub use app::*;
93pub(crate) use arena::*;
94pub use asset_cache::*;
95pub use assets::*;
96pub use color::*;
97pub use ctor::ctor;
98pub use element::*;
99pub use elements::*;
100pub use executor::*;
101pub use geometry::*;
102pub use gestures::*;
103pub use global::*;
104pub use gpui_macros::{
105    AppContext, IntoElement, Render, VisualContext, bench, property_test, register_action, test,
106};
107
108/// Defines a Criterion benchmark group for benchmarks annotated with [`gpui::bench`].
109///
110/// This mirrors `criterion::criterion_group!` so GPUI benchmark files can keep the
111/// same shape as ordinary Criterion benchmarks.
112///
113/// [`gpui::bench`]: crate::bench
114#[macro_export]
115macro_rules! bench_group {
116    ($($tokens:tt)*) => {
117        criterion::criterion_group!($($tokens)*);
118    };
119}
120
121/// Defines the entry point for GPUI Criterion benchmark groups.
122///
123/// This mirrors `criterion::criterion_main!` so GPUI benchmark files can keep the
124/// same shape as ordinary Criterion benchmarks.
125#[macro_export]
126macro_rules! bench_main {
127    ($($tokens:tt)*) => {
128        criterion::criterion_main!($($tokens)*);
129    };
130}
131pub use gpui_shared_string::*;
132pub use gpui_util::arc_cow::ArcCow;
133pub use http_client;
134pub use input::*;
135pub use inspector::*;
136pub use interactive::*;
137use key_dispatch::*;
138pub use keymap::*;
139pub use path_builder::*;
140pub use platform::*;
141pub use profiler::*;
142#[cfg(any(target_os = "windows", target_os = "linux", target_family = "wasm"))]
143pub use queue::{PriorityQueueReceiver, PriorityQueueSender};
144pub use refineable::*;
145pub use scene::*;
146pub use shared_uri::*;
147use std::{any::Any, future::Future};
148pub use style::*;
149pub use styled::*;
150pub use subscription::*;
151pub use svg_renderer::*;
152pub(crate) use tab_stop::*;
153use taffy::TaffyLayoutEngine;
154pub use taffy::{AvailableSpace, LayoutId};
155#[cfg(any(test, feature = "test-support"))]
156pub use test::*;
157pub use text_system::*;
158pub use util::{FutureExt, Timeout};
159pub use view::*;
160pub use window::*;
161
162pub use pollster::block_on;
163
164/// The context trait, allows the different contexts in GPUI to be used
165/// interchangeably for certain operations.
166pub trait AppContext {
167    /// Create a new entity in the app context.
168    #[expect(
169        clippy::wrong_self_convention,
170        reason = "`App::new` is an ubiquitous function for creating entities"
171    )]
172    fn new<T: 'static>(&mut self, build_entity: impl FnOnce(&mut Context<T>) -> T) -> Entity<T>;
173
174    /// Reserve a slot for a entity to be inserted later.
175    /// The returned [Reservation] allows you to obtain the [EntityId] for the future entity.
176    fn reserve_entity<T: 'static>(&mut self) -> Reservation<T>;
177
178    /// Insert a new entity in the app context based on a [Reservation] previously obtained from [`reserve_entity`].
179    ///
180    /// [`reserve_entity`]: Self::reserve_entity
181    fn insert_entity<T: 'static>(
182        &mut self,
183        reservation: Reservation<T>,
184        build_entity: impl FnOnce(&mut Context<T>) -> T,
185    ) -> Entity<T>;
186
187    /// Update a entity in the app context.
188    fn update_entity<T, R>(
189        &mut self,
190        handle: &Entity<T>,
191        update: impl FnOnce(&mut T, &mut Context<T>) -> R,
192    ) -> R
193    where
194        T: 'static;
195
196    /// Update a entity in the app context.
197    fn as_mut<'a, T>(&'a mut self, handle: &Entity<T>) -> GpuiBorrow<'a, T>
198    where
199        T: 'static;
200
201    /// Read a entity from the app context.
202    fn read_entity<T, R>(&self, handle: &Entity<T>, read: impl FnOnce(&T, &App) -> R) -> R
203    where
204        T: 'static;
205
206    /// Update a window for the given handle.
207    fn update_window<T, F>(&mut self, window: AnyWindowHandle, f: F) -> Result<T>
208    where
209        F: FnOnce(AnyView, &mut Window, &mut App) -> T;
210
211    /// Run `f` against the entity's *current* window — the most recently
212    /// rendered window that referenced the entity. Returns `None` if the
213    /// entity has no current window or that window is unavailable. See
214    /// [`App::with_window`] for the underlying lookup.
215    fn with_window<R>(
216        &mut self,
217        entity_id: EntityId,
218        f: impl FnOnce(&mut Window, &mut App) -> R,
219    ) -> Option<R>;
220
221    /// Read a window off of the application context.
222    fn read_window<T, R>(
223        &self,
224        window: &WindowHandle<T>,
225        read: impl FnOnce(Entity<T>, &App) -> R,
226    ) -> Result<R>
227    where
228        T: 'static;
229
230    /// Spawn a future on a background thread
231    fn background_spawn<R>(&self, future: impl Future<Output = R> + Send + 'static) -> Task<R>
232    where
233        R: Send + 'static;
234
235    /// Read a global from this app context
236    fn read_global<G, R>(&self, callback: impl FnOnce(&G, &App) -> R) -> R
237    where
238        G: Global;
239}
240
241/// Returned by [Context::reserve_entity] to later be passed to [Context::insert_entity].
242/// Allows you to obtain the [EntityId] for a entity before it is created.
243pub struct Reservation<T>(pub(crate) Slot<T>);
244
245impl<T: 'static> Reservation<T> {
246    /// Returns the [EntityId] that will be associated with the entity once it is inserted.
247    pub fn entity_id(&self) -> EntityId {
248        self.0.entity_id()
249    }
250}
251
252/// This trait is used for the different visual contexts in GPUI that
253/// require a window to be present.
254pub trait VisualContext: AppContext {
255    /// The result type for window operations.
256    type Result<T>;
257
258    /// Returns the handle of the window associated with this context.
259    fn window_handle(&self) -> AnyWindowHandle;
260
261    /// Update a view with the given callback
262    fn update_window_entity<T: 'static, R>(
263        &mut self,
264        entity: &Entity<T>,
265        update: impl FnOnce(&mut T, &mut Window, &mut Context<T>) -> R,
266    ) -> Self::Result<R>;
267
268    /// Create a new entity, with access to `Window`.
269    fn new_window_entity<T: 'static>(
270        &mut self,
271        build_entity: impl FnOnce(&mut Window, &mut Context<T>) -> T,
272    ) -> Self::Result<Entity<T>>;
273
274    /// Replace the root view of a window with a new view.
275    fn replace_root_view<V>(
276        &mut self,
277        build_view: impl FnOnce(&mut Window, &mut Context<V>) -> V,
278    ) -> Self::Result<Entity<V>>
279    where
280        V: 'static + Render;
281
282    /// Focus a entity in the window, if it implements the [`Focusable`] trait.
283    fn focus<V>(&mut self, entity: &Entity<V>) -> Self::Result<()>
284    where
285        V: Focusable;
286}
287
288/// A trait for tying together the types of a GPUI entity and the events it can
289/// emit.
290pub trait EventEmitter<E: Any>: 'static {}
291
292/// A helper trait for auto-implementing certain methods on contexts that
293/// can be used interchangeably.
294pub trait BorrowAppContext {
295    /// Set a global value on the context.
296    fn set_global<T: Global>(&mut self, global: T);
297    /// Updates the global state of the given type.
298    fn update_global<G, R>(&mut self, f: impl FnOnce(&mut G, &mut Self) -> R) -> R
299    where
300        G: Global;
301    /// Updates the global state of the given type, creating a default if it didn't exist before.
302    fn update_default_global<G, R>(&mut self, f: impl FnOnce(&mut G, &mut Self) -> R) -> R
303    where
304        G: Global + Default;
305}
306
307impl<C> BorrowAppContext for C
308where
309    C: std::borrow::BorrowMut<App>,
310{
311    fn set_global<G: Global>(&mut self, global: G) {
312        self.borrow_mut().set_global(global)
313    }
314
315    #[track_caller]
316    fn update_global<G, R>(&mut self, f: impl FnOnce(&mut G, &mut Self) -> R) -> R
317    where
318        G: Global,
319    {
320        let mut global = self.borrow_mut().lease_global::<G>();
321        let result = f(&mut global, self);
322        self.borrow_mut().end_global_lease(global);
323        result
324    }
325
326    fn update_default_global<G, R>(&mut self, f: impl FnOnce(&mut G, &mut Self) -> R) -> R
327    where
328        G: Global + Default,
329    {
330        self.borrow_mut().default_global::<G>();
331        self.update_global(f)
332    }
333}
334
335/// Information about the GPU GPUI is running on.
336#[derive(Default, Debug, serde::Serialize, serde::Deserialize, Clone)]
337pub struct GpuSpecs {
338    /// Whether the GPU is really a fake (like `llvmpipe`) running on the CPU.
339    pub is_software_emulated: bool,
340    /// The name of the device, as reported by Vulkan.
341    pub device_name: String,
342    /// The name of the driver, as reported by Vulkan.
343    pub driver_name: String,
344    /// Further information about the driver, as reported by Vulkan.
345    pub driver_info: String,
346}
347
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