feat(public): add Theater Mode to release detail pages

Toggle left of the lava popover hides release content so the visualizer fills the surface; player bar grows to carry the playing release's cover, title, and share. State on WaveformVisualizerControlState; pages and bar observe it.
2026-06-20 21:51:30 -04:00
parent 021801999c
commit fa01b9c8e0
12 changed files with 286 additions and 18 deletions
@@ -0,0 +1,49 @@
+@namespace DeepDrftPublic.Client.Controls
+@using DeepDrftPublic.Client.Services
+@implements IDisposable
+@inject WaveformVisualizerControlState State
+
+@* Theater-Mode toggle (Phase 20 §3). The single affordance placed identically on all three release
+   detail pages — immediately to the LEFT of the lava-lamp WaveformVisualizerControlPopover trigger.
+   It is purely a mutation surface: tapping it flips State.TheaterMode and raises Changed; the detail
+   pages observe that to gate their content @if, and the player bar observes it to grow. This component
+   reaches into no page and no bar — single source, multiple observers (§6).
+
+   Visible only when the lava OR waveform subsystem is on — there is nothing to go to theater FOR if both
+   are off (§3.2). Disabled until interactive (§3.4), the same prerender guard the lava/Play buttons use.
+   Active visual state when Theater is ON. .dd-accent-icon gives the green-accent glyph in both themes
+   with zero new CSS (§8) — same treatment as the lava-lamp trigger it sits beside. *@
+
+@if (State.LavaEnabled || State.WaveformEnabled)
+{
+    <div class="dd-accent-icon">
+        <MudTooltip Text="@(State.TheaterMode ? "Exit theater mode" : "Theater mode")">
+            <MudIconButton Icon="@Icons.Material.Filled.Theaters"
+                           Size="@IconSize"
+                           Color="Color.Secondary"
+                           Disabled="@(!RendererInfo.IsInteractive)"
+                           OnClick="@Toggle"
+                           aria-label="Theater mode"
+                           aria-pressed="@State.TheaterMode" />
+        </MudTooltip>
+    </div>
+}
+
+@code {
+    /// <summary>Trigger-icon size. Defaults Large to match the lava-lamp popover trigger it sits beside.</summary>
+    [Parameter] public Size IconSize { get; set; } = Size.Large;
+
+    protected override void OnInitialized() => State.Changed += OnStateChanged;
+
+    // The toggle's own visibility and active state both key off State, which another observer (or this
+    // button) may mutate, so re-render on every Changed — same idempotent posture the visualizer bridge uses.
+    private void OnStateChanged() => InvokeAsync(StateHasChanged);
+
+    private void Toggle()
+    {
+        State.TheaterMode = !State.TheaterMode;
+        State.NotifyChanged();
+    }
+
+    public void Dispose() => State.Changed -= OnStateChanged;
+}