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feat(ui): Display tab + settings.json persistence — first non-keybind tab lands

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Phase L.0 (cont.) — first concrete tab on the new Settings shell, in
the Easy-wins build order agreed in the brainstorm
(Display → Audio → Gameplay → Chat → Character).

DisplaySettings (immutable record): Resolution / Fullscreen / VSync /
FieldOfView (30-120°) / Gamma (0.5-2.0) / ShowFps. Six common 16:9
resolutions in the dropdown. Defaults: 1920×1080, windowed, vsync on,
75° FOV, gamma 1.0, FPS off — matches the brainstorm UX agreement.

SettingsStore: JSON persistence at %LOCALAPPDATA%\acdream\settings.json
(coexists with keybinds.json — own load/save path stays put, no
migration needed). LoadDisplay falls back per-field when keys are
missing (partial-file tolerant) and falls back to defaults when the
file is corrupt or the JSON is unparseable. SaveDisplay round-trips
preserved — unknown top-level keys (e.g. an `audio` section written
by a future client) are kept on save so older builds don't silently
drop newer-tab data.

SettingsVM gains a parallel display-state machine: persistedDisplay +
draftDisplay, SetDisplay mutator, HasUnsavedChanges checks both
keybinds and display deltas, Save/Cancel/ResetAll cover both
atomically from the user's POV (one Save commits everything, one
Cancel reverts everything). Constructor signature extends with two
new params; existing keybinds-only callers updated.

SettingsPanel.RenderDisplayTab replaces the L.0-shell placeholder —
Combo for resolution, Checkboxes for fullscreen/vsync/show-fps,
SliderFloat for FOV + gamma. Live-preview note in the panel body
matches the agreed UX: FOV + gamma update visibly while the user
drags; resolution / fullscreen / vsync apply on Save (live preview
would be too jarring).

GameWindow wires SettingsStore into the existing SettingsVM construct
site — load on startup, save on each tab Save. Errors print to
console and don't crash the panel.

19 new tests:
 · DisplaySettings record (4) — defaults pinned, value equality, with-
   expressions, AvailableResolutions sorted ascending
 · SettingsStore (6) — round trip, missing-file → defaults, corrupt-
   file → defaults, partial-file → per-field fallback, unknown-key
   preservation, DefaultPath shape
 · SettingsVM display (6) — initial draft tracks persisted, SetDisplay
   marks dirty, Save invokes display callback, Cancel reverts,
   ResetAllToDefaults covers display, Save-then-Cancel is no-op
 · SettingsPanel display tab (3) — widgets render only when active,
   resolution combo uses AvailableResolutions, no Combo emitted on
   inactive tabs

dotnet build green (0 warnings); dotnet test 1,246 / 1,246 green
(243 Core.Net + 330 UI.Abstractions + 673 Core).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-04-26 17:46:31 +02:00
parent 7665cdf642
commit 382f0ad3fa
9 changed files with 653 additions and 33 deletions
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52
tests/AcDream.UI.Abstractions.Tests/Panels/Settings/SettingsPanelTests.cs
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@ -29,7 +29,9 @@ public sealed class SettingsPanelTests
persisted.Add(new Binding(new KeyChord(Key.W, ModifierMask.None), InputAction.MovementForward));
persisted.Add(new Binding(new KeyChord(Key.A, ModifierMask.None), InputAction.MovementTurnLeft));
var dispatcher = new InputDispatcher(kb, mouse, persisted);
var vm = new SettingsVM(persisted, dispatcher, _ => { });
var vm = new SettingsVM(
persisted, dispatcher, _ => { },
DisplaySettings.Default, _ => { });
var panel = new SettingsPanel(vm);
return (panel, vm, kb, dispatcher);
}
@ -234,6 +236,54 @@ public sealed class SettingsPanelTests
Assert.Contains(wrapped, t => t.Contains("Audio settings coming soon"));
}
// -- Display tab content ---------------------------------------------
[Fact]
public void Display_tab_when_active_renders_resolution_combo_plus_sliders()
{
var (panel, _, _, _) = Build();
var r = new FakePanelRenderer { ActiveTabLabel = "Display" };
panel.Render(new PanelContext(0.016f, new NullBus()), r);
var combos = r.Calls.Where(c => c.Method == "Combo").Select(c => (string)c.Args[0]!).ToList();
var checks = r.Calls.Where(c => c.Method == "Checkbox").Select(c => (string)c.Args[0]!).ToList();
var sliders = r.Calls.Where(c => c.Method == "SliderFloat").Select(c => (string)c.Args[0]!).ToList();
Assert.Contains("Resolution", combos);
Assert.Contains("Fullscreen", checks);
Assert.Contains("V-Sync", checks);
Assert.Contains("Show FPS", checks);
Assert.Contains("Field of View", sliders);
Assert.Contains("Gamma", sliders);
}
[Fact]
public void Display_tab_does_not_render_when_a_different_tab_is_active()
{
var (panel, _, _, _) = Build();
var r = new FakePanelRenderer { ActiveTabLabel = "Audio" };
panel.Render(new PanelContext(0.016f, new NullBus()), r);
var combos = r.Calls.Where(c => c.Method == "Combo").Select(c => (string)c.Args[0]!).ToList();
Assert.DoesNotContain("Resolution", combos);
}
[Fact]
public void Display_tab_resolution_combo_uses_AvailableResolutions_list()
{
var (panel, _, _, _) = Build();
var r = new FakePanelRenderer { ActiveTabLabel = "Display" };
panel.Render(new PanelContext(0.016f, new NullBus()), r);
var resCall = r.Calls.First(c => c.Method == "Combo" && (string)c.Args[0]! == "Resolution");
var items = (string[])resCall.Args[2]!;
Assert.Contains("1920x1080", items);
Assert.Contains("3840x2160", items);
}
[Fact]
public void Save_Cancel_buttons_render_outside_the_tab_bar()
{