feat(D.2b): UiScrollbar (Type 11) — promote the generic chat scrollbar (widget-generalization Task 2)
- git mv UiChatScrollbar.cs → UiScrollbar.cs; rename class + update doc summary to "Generic scrollbar. Ports retail UIElement_Scrollbar (RegisterElementClass(0xb) @ acclient_2013_pseudo_c.txt:124137); thumb size = trackLen * ThumbRatio (min 8px); step ±1 line." - git mv UiChatScrollbarTests.cs → UiScrollbarTests.cs; rename test class + replace every UiChatScrollbar reference with UiScrollbar (bodies unchanged). - DatWidgetFactory: register Type 11 → new UiScrollbar() before the _ fallback case. - ChatWindowController: change Scrollbar property type to UiScrollbar; replace the old "construct-remove-add" block with a "find factory-built UiScrollbar and bind in place" block (no RemoveChild/AddChild); keep `var track` assignment in scope so the Max/Min block's track.Left/track.Width reads still compile against UiElement?. - AP-41 divergence register: update file:line to UiScrollbar.cs:35; narrow wording to "fallback only — single-tile drawn only when cap ids are unset; the chat controller passes all three cap ids so the 3-slice path is the active code path." - Update inline UiChatScrollbar doc-comment references in UiScrollable.cs + UiChatView.cs. - Full suite: 399 passed, 2 skipped (dat/tower fixture skips), 0 failed. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Erik
parent
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8 changed files with 49 additions and 50 deletions
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@ -20,9 +20,9 @@ namespace AcDream.App.UI.Layout;
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/// <see cref="ElementInfo"/> tree (which contains everything) and adds the behavioral
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/// widgets as children of their parent container widgets (transcript panel
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/// <c>0x10000010</c> / input bar <c>0x10000013</c>) which ARE created as
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/// <see cref="UiDatElement"/> nodes. The scrollbar track (<c>0x10000012</c>) and
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/// channel menu (<c>0x10000014</c>) are created by the factory and are replaced
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/// with their behavioral counterparts here.
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/// <see cref="UiDatElement"/> nodes. The scrollbar track (<c>0x10000012</c>) is built
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/// directly as a <see cref="UiScrollbar"/> by the factory (Type 11) and is bound in place
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/// here. The channel menu (<c>0x10000014</c>) is still replaced with its behavioral counterpart.
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/// </para>
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/// </summary>
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public sealed class ChatWindowController
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@ -71,7 +71,7 @@ public sealed class ChatWindowController
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public UiChatInput Input { get; private set; } = null!;
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/// <summary>Scrollbar widget, driven by <see cref="Transcript"/>'s scroll model.</summary>
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public UiChatScrollbar Scrollbar { get; private set; } = null!;
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public UiScrollbar Scrollbar { get; private set; } = null!;
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/// <summary>Channel-selector menu widget.</summary>
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public UiChannelMenu Menu { get; private set; } = null!;
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@ -110,7 +110,7 @@ public sealed class ChatWindowController
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/// <param name="debugFont">Fallback debug bitmap font (used when
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/// <paramref name="datFont"/> is null).</param>
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/// <param name="resolve">Dat RenderSurface id → (GL tex handle, px width, px height).
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/// Forwarded to <see cref="UiChatScrollbar"/> and <see cref="UiChannelMenu"/>.</param>
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/// Forwarded to <see cref="UiScrollbar"/> and <see cref="UiChannelMenu"/>.</param>
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public static ChatWindowController? Bind(
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ElementInfo rootInfo,
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ImportedLayout layout,
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@ -196,33 +196,24 @@ public sealed class ChatWindowController
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inputBar.AddChild(c.Input);
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c.Input.OnSubmit = text => ChatCommandRouter.Submit(text, vm, busProvider(), c._activeChannel);
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// ── Scrollbar — replace the imported track placeholder ────────────
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// The factory created a UiDatElement for the track. Remove it and place a
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// behavioral UiChatScrollbar at the same position, driving the transcript's scroll.
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// ── Scrollbar — bind the factory-built Type-11 track element ────────
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// The factory now builds the Type-11 track element (0x10000012) as a UiScrollbar
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// directly. Find it, bind it in place — no remove/add needed.
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var track = layout.FindElement(TrackId);
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if (track?.Parent is { } trackParent)
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if (track is UiScrollbar bar)
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{
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c.Scrollbar = new UiChatScrollbar
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{
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// Pull the bar up to the panel top so the top arrow meets the window
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// border (and lines up with the max/min button at root y=0); the dat
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// track sits 6px down, which left a gap after the resize-bar reclaim.
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Left = track.Left,
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Top = 0f,
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Width = track.Width,
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Height = track.Height + track.Top,
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Anchors = track.Anchors,
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Model = c.Transcript.Scroll,
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SpriteResolve = resolve,
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TrackSprite = TrackSprite,
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ThumbSprite = ThumbSprite,
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ThumbTopSprite = ThumbTopSprite,
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ThumbBotSprite = ThumbBotSprite,
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UpSprite = UpSprite,
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DownSprite = DownSprite,
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};
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trackParent.RemoveChild(track);
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trackParent.AddChild(c.Scrollbar);
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float oldTop = bar.Top;
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bar.Top = 0f; // pull up to the panel top (resize-bar reclaim)
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bar.Height = bar.Height + oldTop;
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bar.Model = c.Transcript.Scroll;
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bar.SpriteResolve = resolve;
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bar.TrackSprite = TrackSprite;
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bar.ThumbSprite = ThumbSprite;
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bar.ThumbTopSprite = ThumbTopSprite;
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bar.ThumbBotSprite = ThumbBotSprite;
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bar.UpSprite = UpSprite;
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bar.DownSprite = DownSprite;
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c.Scrollbar = bar;
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}
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// ── Channel menu — replace the imported menu placeholder ──────────
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@ -57,8 +57,9 @@ public static class DatWidgetFactory
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UiElement e = info.Type switch
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{
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7 => BuildMeter(info, resolve, datFont), // UIElement_Meter
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_ => new UiDatElement(info, resolve), // generic fallback for all other types
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7 => BuildMeter(info, resolve, datFont), // UIElement_Meter
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11 => new UiScrollbar(), // UIElement_Scrollbar (reg :124137)
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_ => new UiDatElement(info, resolve), // generic fallback for all other types
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};
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// Propagate position + size (pixel-exact from the dat).
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@ -52,7 +52,7 @@ public sealed class UiChatView : UiElement
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/// <summary>Inner text inset from the view edges, px.</summary>
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public float Padding { get; set; } = 4f;
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/// <summary>The scroll model — also read by the linked UiChatScrollbar.</summary>
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/// <summary>The scroll model — also read by the linked UiScrollbar.</summary>
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public UiScrollable Scroll { get; } = new();
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/// <summary>True while the view is pinned to the newest line (auto-scrolls as content grows).</summary>
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@ -7,7 +7,7 @@ namespace AcDream.App.UI;
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/// the scroll offset is an integer pixel value (<c>m_iScrollableY</c>) clamped to
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/// [0, ContentHeight - ViewHeight]; the thumb ratio is view/content; the position
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/// ratio is scroll/(content-view). Pure (no GL) so it is fully unit-tested and
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/// shared by the transcript (UiChatView) and the scrollbar (UiChatScrollbar).
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/// shared by the transcript (UiChatView) and the scrollbar (UiScrollbar).
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/// Decomp anchors: SetScrollableXY @0x4740c0, UpdateScrollbarSize_ @0x4741a0,
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/// UpdateScrollbarPosition_ @0x473f20, UIElement_Text::InqScrollDelta @0x4689b0.
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/// </summary>
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@ -4,11 +4,9 @@ using System.Numerics;
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namespace AcDream.App.UI;
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/// <summary>
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/// Right-side chat scrollbar: a track sprite, a draggable thumb sized to the
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/// content/view ratio, and up/down step buttons. Drives a linked
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/// <see cref="UiScrollable"/>. Ports retail <c>UIElement_Scrollbar::UpdateLayout
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/// @0x4710d0</c> (thumb size = trackLen * ThumbRatio, min 8px; thumb pos from
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/// PositionRatio) and <c>HandleButtonClick @0x470e90</c> (step ±1 line).
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/// Generic scrollbar. Ports retail <c>UIElement_Scrollbar</c>
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/// (RegisterElementClass(0xb) @ acclient_2013_pseudo_c.txt:124137);
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/// thumb size = trackLen * ThumbRatio (min 8px); step ±1 line.
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/// </summary>
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/// <remarks>
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/// Dat element ids (chat LayoutDesc 0x21000006): track 0x10000012 (X=474 Y=6 W=16 H=68),
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@ -22,7 +20,7 @@ namespace AcDream.App.UI;
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/// rendered scrollbar's height; the widget responds to those regions directly via hit
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/// comparison in OnEvent without requiring separate child elements.
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/// </remarks>
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public sealed class UiChatScrollbar : UiElement
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public sealed class UiScrollbar : UiElement
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{
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/// <summary>The scroll model this bar reflects + drives (shared with the transcript).</summary>
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public UiScrollable? Model { get; set; }
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@ -61,7 +59,7 @@ public sealed class UiChatScrollbar : UiElement
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private bool _draggingThumb;
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private float _dragOffsetY;
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public UiChatScrollbar() { CapturesPointerDrag = true; }
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public UiScrollbar() { CapturesPointerDrag = true; }
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/// <summary>
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/// Computes the thumb rectangle (local y origin and height) within the track area
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