Files
zed/crates/gpui/examples/window_shadow.rs
T
Lukas Wirth ab1c37a4ef gpui_web: Let applications provide fonts (#63493)
`gpui_web` currently embeds IBM Plex Sans and Lilex into every browser
application during platform construction. Applications such as Delta
already provide their own fonts, so those binaries contain overlapping
font bundles and register the same faces twice.

This change starts the web platform with an empty font database,
matching the ownership boundary used by native applications: the
application selects and registers its fonts before opening a window.
Delta already follows that sequence. GPUI's browser-capable examples now
load the former eight-face bundle explicitly through shared example
support, while the standalone `hello_web` example demonstrates
registering a minimal application font directly.

Testing performed:

- `cargo check -p gpui --examples --target wasm32-unknown-unknown`
- `cargo check -p gpui --examples`
- `cargo check -p gpui_web --target wasm32-unknown-unknown`
- `cargo check --manifest-path
crates/gpui_web/examples/hello_web/Cargo.toml --target
wasm32-unknown-unknown`
- `./script/clippy -p gpui_web --target wasm32-unknown-unknown`
- `cargo fmt -p gpui -p gpui_web --check`

Release Notes:

- N/A
2026-08-31 13:07:22 +00:00

253 lines
11 KiB
Rust

#![cfg_attr(target_family = "wasm", no_main)]
#[path = "example_support/fonts.rs"]
mod example_support;
use gpui::{
App, Bounds, Context, CursorStyle, Decorations, HitboxBehavior, Hsla, MouseButton, Pixels,
Point, ResizeEdge, Size, Window, WindowBackgroundAppearance, WindowBounds, WindowDecorations,
WindowOptions, black, canvas, div, green, point, prelude::*, px, rgb, size, transparent_black,
white,
};
use gpui_platform::application;
struct WindowShadow {}
// Things to do:
// 1. We need a way of calculating which edge or corner the mouse is on,
// and then dispatch on that
// 2. We need to improve the shadow rendering significantly
// 3. We need to implement the techniques in here in Zed
impl Render for WindowShadow {
fn render(&mut self, window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
let decorations = window.window_decorations();
let rounding = px(10.0);
let shadow_size = px(10.0);
let border_size = px(1.0);
let grey = rgb(0x808080);
window.set_client_inset(shadow_size);
div()
.id("window-backdrop")
.bg(transparent_black())
.map(|div| match decorations {
Decorations::Server => div,
Decorations::Client { tiling, .. } => div
.bg(gpui::transparent_black())
.child(
canvas(
|_bounds, window, _cx| {
window.insert_hitbox(
Bounds::new(
point(px(0.0), px(0.0)),
window.window_bounds().get_bounds().size,
),
HitboxBehavior::Normal,
)
},
move |_bounds, hitbox, window, _cx| {
let mouse = window.mouse_position();
let size = window.window_bounds().get_bounds().size;
let Some(edge) = resize_edge(mouse, shadow_size, size) else {
return;
};
window.set_cursor_style(
match edge {
ResizeEdge::Top | ResizeEdge::Bottom => {
CursorStyle::ResizeUpDown
}
ResizeEdge::Left | ResizeEdge::Right => {
CursorStyle::ResizeLeftRight
}
ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
CursorStyle::ResizeUpLeftDownRight
}
ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
CursorStyle::ResizeUpRightDownLeft
}
},
&hitbox,
);
},
)
.size_full()
.absolute(),
)
.when(!(tiling.top || tiling.right), |div| {
div.rounded_tr(rounding)
})
.when(!(tiling.top || tiling.left), |div| div.rounded_tl(rounding))
.when(!tiling.top, |div| div.pt(shadow_size))
.when(!tiling.bottom, |div| div.pb(shadow_size))
.when(!tiling.left, |div| div.pl(shadow_size))
.when(!tiling.right, |div| div.pr(shadow_size))
.on_mouse_move(|_e, window, _cx| window.refresh())
.on_mouse_down(MouseButton::Left, move |e, window, _cx| {
let size = window.window_bounds().get_bounds().size;
let pos = e.position;
match resize_edge(pos, shadow_size, size) {
Some(edge) => window.start_window_resize(edge),
None => window.start_window_move(),
};
}),
})
.size_full()
.child(
div()
.cursor(CursorStyle::Arrow)
.map(|div| match decorations {
Decorations::Server => div,
Decorations::Client { tiling } => div
.border_color(grey)
.when(!(tiling.top || tiling.right), |div| {
div.rounded_tr(rounding)
})
.when(!(tiling.top || tiling.left), |div| div.rounded_tl(rounding))
.when(!tiling.top, |div| div.border_t(border_size))
.when(!tiling.bottom, |div| div.border_b(border_size))
.when(!tiling.left, |div| div.border_l(border_size))
.when(!tiling.right, |div| div.border_r(border_size))
.when(!tiling.is_tiled(), |div| {
div.shadow(vec![
gpui::BoxShadow::new(
px(0.),
px(0.),
Hsla {
h: 0.,
s: 0.,
l: 0.,
a: 0.4,
},
)
.blur_radius(shadow_size / 2.),
])
}),
})
.on_mouse_move(|_e, _, cx| {
cx.stop_propagation();
})
.bg(gpui::rgb(0xCCCCFF))
.size_full()
.flex()
.flex_col()
.justify_around()
.child(
div().w_full().flex().flex_row().justify_around().child(
div()
.flex()
.bg(white())
.size(px(300.0))
.justify_center()
.items_center()
.shadow_lg()
.border_1()
.border_color(rgb(0x0000ff))
.text_xl()
.text_color(rgb(0xffffff))
.child(
div()
.id("hello")
.w(px(200.0))
.h(px(100.0))
.bg(green())
.shadow(vec![
gpui::BoxShadow::new(
px(0.),
px(0.),
Hsla {
h: 0.,
s: 0.,
l: 0.,
a: 1.0,
},
)
.blur_radius(px(20.0)),
])
.map(|div| match decorations {
Decorations::Server => div,
Decorations::Client { .. } => div
.on_mouse_down(
MouseButton::Left,
|_e, window, _| {
window.start_window_move();
},
)
.on_click(|e, window, _| {
if e.is_right_click() {
window.show_window_menu(e.position());
}
})
.text_color(black())
.child("this is the custom titlebar"),
}),
),
),
),
)
}
}
fn resize_edge(pos: Point<Pixels>, shadow_size: Pixels, size: Size<Pixels>) -> Option<ResizeEdge> {
let edge = if pos.y < shadow_size && pos.x < shadow_size {
ResizeEdge::TopLeft
} else if pos.y < shadow_size && pos.x > size.width - shadow_size {
ResizeEdge::TopRight
} else if pos.y < shadow_size {
ResizeEdge::Top
} else if pos.y > size.height - shadow_size && pos.x < shadow_size {
ResizeEdge::BottomLeft
} else if pos.y > size.height - shadow_size && pos.x > size.width - shadow_size {
ResizeEdge::BottomRight
} else if pos.y > size.height - shadow_size {
ResizeEdge::Bottom
} else if pos.x < shadow_size {
ResizeEdge::Left
} else if pos.x > size.width - shadow_size {
ResizeEdge::Right
} else {
return None;
};
Some(edge)
}
fn run_example() {
application().run(|cx: &mut App| {
if !example_support::load_fonts(cx) {
return;
}
let bounds = Bounds::centered(None, size(px(600.0), px(600.0)), cx);
cx.open_window(
WindowOptions {
window_bounds: Some(WindowBounds::Windowed(bounds)),
window_background: WindowBackgroundAppearance::Opaque,
window_decorations: Some(WindowDecorations::Client),
..Default::default()
},
|window, cx| {
cx.new(|cx| {
cx.observe_window_appearance(window, |_, window, _| {
window.refresh();
})
.detach();
WindowShadow {}
})
},
)
.unwrap();
});
}
#[cfg(not(target_family = "wasm"))]
fn main() {
run_example();
}
#[cfg(target_family = "wasm")]
#[wasm_bindgen::prelude::wasm_bindgen(start)]
pub fn start() {
gpui_platform::web_init();
run_example();
}