- 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>
Implements the right-side chat scrollbar widget. Ports retail
UIElement_Scrollbar::UpdateLayout @0x4710d0 (thumb sizing + placement)
and HandleButtonClick @0x470e90 (step ±1 line, page on track click).
Dat element ids sourced from chat LayoutDesc 0x21000006 (base layout
0x2100003E): up-button sprite 0x06004C69, down-button 0x06004C6C, track
0x06004C5F, thumb middle 0x06004C63. Up/down buttons occupy the top and
bottom ButtonH (16px) regions of the widget height, matching element
positions Y=0 and Y=32 in the base scrollbar template.
Adds 6 pure ThumbRect tests (no GL): sizing, clamping to MinThumb,
position at start/mid/end, no-overflow full-fill.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
