ZacharyZhang-NY/Ely-GPUI-Components
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T44d Web · Gallery builds for wasm32: one story per section by URL, themed by the host

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The gallery's entry runs natively or, on wasm32, from a wasm_bindgen start
through gpui_web, single-threaded with WebGL2 fallback. ?page, ?story and
?theme choose what shows; an unknown one fails in the page and the log.
set_theme switches the mode later. Pictures load from ELY_GALLERY_ASSETS.
scripts/stories.py writes examples/gallery/stories.json from the pages.
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ZacharyZhang-NY committed 2026-09-29 19:16:41 -04:00
1 parent a03df0987c
commit 48c7b09d8d
83 files changed
+1000 -455
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examples/gallery/shell.rs
+114 -61
View File
@@ -1,16 +1,17 @@
use ely_gpui_component::{
buttons::{ButtonVariant, IconButton},
feedback::Alert,
layout::on_axis,
primitives::{FocusScope, IconName},
primitives::{FocusScope, IconName, Severity},
theme::{ActiveTheme, ControlSize, Mode, Radius, TextSize, Theme},
};
use gpui::{
AnyElement, App, Bounds, Context, FocusHandle, FontWeight, InteractiveElement, IntoElement,
AnyElement, App, Context, FocusHandle, FontWeight, InteractiveElement, IntoElement,
ParentElement, Pixels, Render, ScrollHandle, SharedString, StatefulInteractiveElement, Styled,
Subscription, Window, div, point, prelude::*, px,
};
use crate::pages;
use crate::{Start, pages, ui::Story};
#[derive(Clone, Copy, PartialEq, Eq)]
pub enum Choice {
@@ -21,6 +22,10 @@ pub enum Choice {
pub struct Gallery {
page: usize,
/// The one section drawn alone, full-bleed, if any.
story: Option<SharedString>,
/// Why nothing can be shown, in place of the page.
failure: Option<SharedString>,
/// Counts fresh starts; the page's state lives under it.
pass: usize,
choice: Choice,
@@ -32,12 +37,7 @@ pub struct Gallery {
}
impl Gallery {
pub fn new(
page: usize,
narrow: Option<f32>,
window: &mut Window,
cx: &mut Context<Self>,
) -> Self {
pub fn new(start: Start, window: &mut Window, cx: &mut Context<Self>) -> Self {
let appearance = cx.observe_window_appearance(window, |gallery, window, cx| {
if gallery.choice == Choice::System {
Theme::set_mode(window.appearance().into(), cx);
@@ -46,12 +46,14 @@ impl Gallery {
let focus = cx.focus_handle();
window.focus(&focus, cx);
Self {
page,
page: start.page,
story: start.story,
failure: start.failure,
pass: 0,
choice: Choice::Light,
choice: start.choice,
focus,
scroll: ScrollHandle::new(),
narrow: narrow.map(px),
narrow: start.narrow.map(px),
_appearance: appearance,
}
}
@@ -64,18 +66,21 @@ impl Gallery {
}
/// Drops the page's state, so it draws as new.
#[cfg(not(target_family = "wasm"))]
pub fn fresh(&mut self, cx: &mut Context<Self>) {
self.pass += 1;
cx.notify();
}
/// Viewport height and furthest scroll, in pixels.
#[cfg(not(target_family = "wasm"))]
pub fn scroll_extent(&self) -> (Pixels, Pixels) {
(self.scroll.bounds().size.height, self.scroll.max_offset().y)
}
/// Scrolls until `target` sits inside the page. True if it moved.
pub fn reveal(&mut self, target: Bounds<Pixels>, cx: &mut Context<Self>) -> bool {
#[cfg(not(target_family = "wasm"))]
pub fn reveal(&mut self, target: gpui::Bounds<Pixels>, cx: &mut Context<Self>) -> bool {
let (view, margin) = (self.scroll.bounds(), px(96.0));
let shift = if target.top() < view.top() + margin {
target.top() - view.top() - margin
@@ -89,6 +94,7 @@ impl Gallery {
true
}
#[cfg(not(target_family = "wasm"))]
pub fn scroll_to(&mut self, y: Pixels, cx: &mut Context<Self>) {
self.scroll.set_offset(point(px(0.0), -y));
cx.notify();
@@ -220,72 +226,119 @@ impl Gallery {
None => content.into_any_element(),
}
}
/// The page's demos, or the story's alone; why not, once the start or the story failed.
fn body(
&mut self,
page: &pages::Page,
window: &mut Window,
cx: &mut Context<Self>,
) -> Result<AnyElement, SharedString> {
if let Some(failure) = &self.failure {
return Err(failure.clone());
}
if let Some(story) = &self.story {
cx.set_global(Story::new(story.clone()));
}
let body = window.with_id(("pass", self.pass), |window| (page.render)(window, cx));
if self.story.is_none() {
return Ok(body);
}
match cx.remove_global::<Story>().missing(page.slug) {
None => Ok(body),
Some(missing) => {
log::error!("gallery: {missing}");
let failure = SharedString::from(missing);
self.failure = Some(failure.clone());
Err(failure)
}
}
}
}
impl Render for Gallery {
fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
let page = &pages::ALL[self.page];
let body = window.with_id(("pass", self.pass), |window| (page.render)(window, cx));
let body = self.body(page, window, cx);
let sidebar = self.sidebar(cx);
let switcher = self.switcher(cx);
let theme = cx.theme();
let colors = &theme.colors;
FocusScope::new(&self.focus)
let root = FocusScope::new(&self.focus)
.root()
.size_full()
.flex()
.bg(colors.bg)
.text_color(colors.fg)
.font_family(theme.font_family.clone())
.text_size(theme.text_size(TextSize::Base))
.child(sidebar)
.child(
on_axis(div().id(("page", self.pass)))
.flex_1()
.h_full()
.text_size(theme.text_size(TextSize::Base));
let body = match body {
Ok(body) => body,
Err(failure) => {
return root.child(
div().w_full().p_6().child(
Alert::new("gallery-failure", Severity::Danger, "Nothing to show")
.body(failure),
),
);
}
};
if self.story.is_some() {
return root.child(
on_axis(div().id(("story", self.pass)))
.size_full()
.overflow_y_scroll()
.track_scroll(&self.scroll)
.child(
div()
.max_w(px(960.0))
.px(px(56.0))
.pt(px(56.0))
.pb(px(96.0))
.child(
self.card(
div()
.flex()
.flex_wrap()
.items_start()
.justify_between()
.gap_6()
.child(
div()
.flex_1()
.min_w(px(200.0))
.flex()
.flex_col()
.gap_2()
.child(
div()
.text_size(theme.text_size(TextSize::Xxl))
.font_weight(FontWeight::SEMIBOLD)
.child(page.title),
)
.child(
div()
.text_size(theme.text_size(TextSize::Md))
.text_color(colors.fg_muted)
.child(page.summary),
),
)
.child(switcher),
body,
cx,
),
.child(div().p_6().child(body)),
);
}
root.child(sidebar).child(
on_axis(div().id(("page", self.pass)))
.flex_1()
.h_full()
.overflow_y_scroll()
.track_scroll(&self.scroll)
.child(
div()
.max_w(px(960.0))
.px(px(56.0))
.pt(px(56.0))
.pb(px(96.0))
.child(
self.card(
div()
.flex()
.flex_wrap()
.items_start()
.justify_between()
.gap_6()
.child(
div()
.flex_1()
.min_w(px(200.0))
.flex()
.flex_col()
.gap_2()
.child(
div()
.text_size(theme.text_size(TextSize::Xxl))
.font_weight(FontWeight::SEMIBOLD)
.child(page.title),
)
.child(
div()
.text_size(theme.text_size(TextSize::Md))
.text_color(colors.fg_muted)
.child(page.summary),
),
)
.child(switcher),
body,
cx,
),
),
)
),
),
)
}
}