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feat: add contact-based chat creation and re-add chat screening (#54)

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Reviewed-on: reya/coop#54
This commit is contained in:
reya
2026-09-29 06:28:44 +00:00
parent e4e13b0889
commit be15873e0d
25 changed files with 1670 additions and 591 deletions
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crates/ui/src/avatar.rs
+24 -132
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@@ -10,7 +10,10 @@ use crate::{Selectable, Sizable, Size, StyledExt};
/// Number of rows and columns in the generated pixel grid.
const PIXEL_GRID: usize = 8;
/// Probability that a cell in the left half of the grid is filled.
/// Empty cells kept between the pattern and the avatar edge, so the art
/// gathers in the center instead of filling the whole avatar.
const MARGIN: usize = 1;
/// Probability that a cell in the left half of the pattern area is filled.
const FILL_PROBABILITY: f32 = 0.42;
/// Probability that a filled cell uses the accent shade instead of the main color.
const ACCENT_PROBABILITY: f32 = 0.25;
@@ -33,19 +36,6 @@ pub(super) fn avatar_size(size: Size) -> AbsoluteLength {
}
/// A deterministic, offline pixel-art avatar derived from a seed.
///
/// Use it for entities that have no profile picture: the same seed always
/// renders the same pattern, so identities stay recognizable without a
/// network round trip. The pattern is painted as geometry and cropped to a
/// circle, at the same sizes as [`Avatar`].
///
/// # Examples
///
/// ```
/// use ui::avatar::PixelAvatar;
///
/// PixelAvatar::new("alice");
/// ```
#[derive(IntoElement)]
pub struct PixelAvatar {
seed: u64,
@@ -87,7 +77,7 @@ impl RenderOnce for PixelAvatar {
move |bounds, seed, window, cx| {
let theme = cx.theme();
let main = Hsla {
h: (theme.icon_accent.h + seed as f32 / u64::MAX as f32) % 1.,
h: seed as f32 / u64::MAX as f32,
s: 0.6,
l: if theme.is_dark() { 0.6 } else { 0.45 },
a: 1.,
@@ -142,8 +132,11 @@ fn pixel_pattern(seed: u64) -> [u8; PIXEL_GRID * PIXEL_GRID] {
let mut pattern = [0u8; PIXEL_GRID * PIXEL_GRID];
let mut filled = 0usize;
for row in 0..PIXEL_GRID {
for col in 0..PIXEL_GRID / 2 {
let art_rows = PIXEL_GRID - 2 * MARGIN;
let art_columns = PIXEL_GRID / 2 - MARGIN;
for row in MARGIN..PIXEL_GRID - MARGIN {
for col in MARGIN..PIXEL_GRID / 2 {
if rng.chance(FILL_PROBABILITY) {
let accent = rng.chance(ACCENT_PROBABILITY);
set_cell(&mut pattern, row, col, if accent { 2 } else { 1 });
@@ -153,17 +146,17 @@ fn pixel_pattern(seed: u64) -> [u8; PIXEL_GRID * PIXEL_GRID] {
}
if filled < MIN_FILLED {
let half = PIXEL_GRID * PIXEL_GRID / 2;
let start = (rng.next() % half as u64) as usize;
let total = art_rows * art_columns;
let start = (rng.next() % total as u64) as usize;
for offset in 0..half {
for offset in 0..total {
if filled >= MIN_FILLED {
break;
}
let ix = (start + offset) % half;
let row = ix / (PIXEL_GRID / 2);
let col = ix % (PIXEL_GRID / 2);
let ix = (start + offset) % total;
let row = MARGIN + ix / art_columns;
let col = MARGIN + ix % art_columns;
if pattern[row * PIXEL_GRID + col] == 0 {
set_cell(&mut pattern, row, col, 1);
@@ -358,24 +351,12 @@ fn generated_avatar(seed: Option<&str>, size: Pixels) -> AnyElement {
}
/// An element that renders a user avatar with customizable appearance options.
///
/// Entities without a picture still get a stable identity: the avatar falls
/// back to a [`PixelAvatar`] seeded through [`Avatar::seed`], both when there
/// is no picture and when the picture fails to load.
///
/// # Examples
///
/// ```
/// use ui::avatar::Avatar;
///
/// Avatar::new(None).seed("alice");
/// ```
#[derive(IntoElement)]
pub struct Avatar {
base: Div,
picture: Option<ImageSource>,
grayscale: bool,
seed: Option<SharedString>,
seed: Option<String>,
style: StyleRefinement,
size: Size,
border_color: Option<Hsla>,
@@ -384,16 +365,13 @@ pub struct Avatar {
impl Avatar {
/// Creates an avatar for an entity whose profile picture may be missing.
///
/// Use [`Avatar::seed`] to choose the generated
/// pixel avatar rendered when `picture` is `None`.
pub fn new(picture: Option<SharedString>) -> Self {
Self::from_picture(picture.map(ImageSource::from))
Self::from_source(picture)
}
/// Creates an avatar from an already-resolved source.
pub fn from_source(picture: impl Into<ImageSource>) -> Self {
Self::from_picture(Some(picture.into()))
/// Creates an avatar from an already-resolved source, which may be missing.
pub fn from_source(picture: Option<impl Into<ImageSource>>) -> Self {
Self::from_picture(picture.map(Into::into))
}
fn from_picture(picture: Option<ImageSource>) -> Self {
@@ -410,33 +388,18 @@ impl Avatar {
}
/// Sets the seed for the generated pixel avatar.
///
/// The seed should be a stable identifier of the entity the avatar
/// represents, such as a public key.
pub fn seed(mut self, seed: impl Into<SharedString>) -> Self {
pub fn seed(mut self, seed: impl Into<String>) -> Self {
self.seed = Some(seed.into());
self
}
/// Applies a grayscale filter to the avatar image.
///
/// # Examples
///
/// ```
/// use ui::avatar::Avatar;
///
/// Avatar::new(None).grayscale(true);
/// ```
pub fn grayscale(mut self, grayscale: bool) -> Self {
self.grayscale = grayscale;
self
}
/// Sets the border color of the avatar.
///
/// This might be used to match the border to the background color of
/// the parent element to create the illusion of cropping another
/// shape underneath (for example in face piles.)
pub fn border_color(mut self, color: impl Into<Hsla>) -> Self {
self.border_color = Some(color.into());
self
@@ -480,6 +443,7 @@ impl RenderOnce for Avatar {
} else {
px(0.)
};
let image_size = avatar_size(self.size).to_pixels(window.rem_size());
let container_size = image_size + border_width * 2.;
@@ -487,6 +451,7 @@ impl RenderOnce for Avatar {
Some(picture) => {
let seed = self.seed;
let grayscale = self.grayscale;
img(picture)
.size(image_size)
.rounded_full()
@@ -510,76 +475,3 @@ impl RenderOnce for Avatar {
.child(content)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn pixel_patterns_are_symmetric_and_stable() {
for seed in 0..50 {
let pattern = pixel_pattern(seed);
let filled = pattern.iter().filter(|&&cell| cell != 0).count();
assert!(
filled >= MIN_FILLED * 2,
"pattern too sparse for seed {seed}"
);
for row in 0..PIXEL_GRID {
for col in 0..PIXEL_GRID {
assert_eq!(
pattern[row * PIXEL_GRID + col],
pattern[row * PIXEL_GRID + (PIXEL_GRID - 1 - col)],
"asymmetric pattern for seed {seed} at ({row}, {col})"
);
}
}
}
for seed in [0, 1, 42, u64::MAX] {
assert_eq!(pixel_pattern(seed), pixel_pattern(seed));
}
assert_ne!(pixel_pattern(42), pixel_pattern(43));
}
fn area(polygon: &[Point<Pixels>]) -> f32 {
let mut sum: f32 = 0.;
for (&a, &b) in polygon.iter().zip(polygon.iter().cycle().skip(1)) {
sum += a.x.as_f32() * b.y.as_f32() - b.x.as_f32() * a.y.as_f32();
}
(sum / 2.).abs()
}
#[test]
fn clipping_keeps_only_the_part_inside_the_circle() {
let circle = circle_polygon(point(px(10.), px(10.)), 10.);
let square = |left: f32, top: f32| {
[
point(px(left), px(top)),
point(px(left + 4.), px(top)),
point(px(left + 4.), px(top + 4.)),
point(px(left), px(top + 4.)),
]
};
let inside = clip_polygon(&square(8., 8.), &circle);
assert!((area(&inside) - 16.).abs() < 0.05, "area {}", area(&inside));
assert!(clip_polygon(&square(20., 20.), &circle).is_empty());
let straddling = clip_polygon(&square(0., 0.), &circle);
for vertex in &straddling {
let delta_x = vertex.x.as_f32() - 10.;
let delta_y = vertex.y.as_f32() - 10.;
assert!(
delta_x.hypot(delta_y) <= 10. + 0.1,
"clipped vertex outside the circle"
);
}
let area = area(&straddling);
assert!(area > 0. && area < 16., "area {area}");
}
}