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Sprint 6: User List with Avatars

Goal: Display available users with circular avatars for quick selection, allowing click-to-login workflow.

Completed Features

Avatar Loading

  • Searches standard avatar locations:
    • ~/.face (freedesktop standard)
    • ~/.face.icon
    • ~/.face.png
    • ~/.config/face.png
    • /var/lib/AccountsService/icons/<username>
  • Image processing:
    • Center crop to square
    • Scale with Lanczos3 filter for quality
    • RGBA to BGRA conversion for Cairo
  • Caching to avoid reloading

Fallback Avatars

  • Colored circle with user initials
  • Hue derived from username hash for consistency
  • First + last initial for full names, single initial for usernames

User List Widget

  • Horizontal row positioned above login form
  • Circular avatar rendering with clipping
  • Username/first name displayed below avatar
  • Hover effect: semi-transparent highlight background
  • Selection effect: blue ring around avatar
  • Click behavior:
    • Populates username field
    • Clears password field
    • Focuses password field
    • Clears any error messages

Files Added

  • gardm-greeter/src/avatar.rs - Avatar loading and rendering
  • gardm-greeter/src/widgets/user_list.rs - User list widget

IPC Integration

  • Uses ListUsers request to get available users
  • User info includes: name, full_name, home directory, avatar path
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1 # Sprint 6: User List with Avatars
2
3 **Goal:** Display available users with circular avatars for quick selection, allowing click-to-login workflow.
4
5 ## Completed Features
6
7 ### Avatar Loading
8 - Searches standard avatar locations:
9 - `~/.face` (freedesktop standard)
10 - `~/.face.icon`
11 - `~/.face.png`
12 - `~/.config/face.png`
13 - `/var/lib/AccountsService/icons/<username>`
14 - Image processing:
15 - Center crop to square
16 - Scale with Lanczos3 filter for quality
17 - RGBA to BGRA conversion for Cairo
18 - Caching to avoid reloading
19
20 ### Fallback Avatars
21 - Colored circle with user initials
22 - Hue derived from username hash for consistency
23 - First + last initial for full names, single initial for usernames
24
25 ### User List Widget
26 - Horizontal row positioned above login form
27 - Circular avatar rendering with clipping
28 - Username/first name displayed below avatar
29 - Hover effect: semi-transparent highlight background
30 - Selection effect: blue ring around avatar
31 - Click behavior:
32 - Populates username field
33 - Clears password field
34 - Focuses password field
35 - Clears any error messages
36
37 ## Files Added
38 - `gardm-greeter/src/avatar.rs` - Avatar loading and rendering
39 - `gardm-greeter/src/widgets/user_list.rs` - User list widget
40
41 ## IPC Integration
42 - Uses `ListUsers` request to get available users
43 - User info includes: name, full_name, home directory, avatar path