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fix: plain <menu> popup scrollbar draws retail chrome, not a flat bar

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Owner live-client report 2026-09-07: "For scrollable dropdown or the meta
window we use the same assets as we do in for example chat or inventory
window." The plain-style <menu> popup's scrollable-overflow scrollbar
(DrawScrollablePopupPlain / DrawPopupScrollbarPlain in UiMenu.cs) drew a
home-made flat 1px track + flat thumb instead of the gold track + up/down
arrow buttons + thumb the chat SpewBox and inventory UiItemList already
use through RetailScrollbarChrome. The owner only ever objected to the
retail ROW art (checkmark glyph, gradient panel) — the bar itself was
never in scope for the plain-row fix, so this change touches only the
scrollbar draw call and leaves the plain row rendering untouched.

DrawScrollablePopupPlain now calls the existing DrawPopupScrollbar helper
(the same procedural sprite-chrome draw VendorUiController/
ConfigOptionsPageController already use) whenever a SpriteResolve is
wired, falling back to the old flat DrawPopupScrollbarPlain only for a
hand-built UiMenu with no resolver at all. New
RetailScrollbarChrome.ApplyToMenuPopup(UiMenu) wires the same vertical
skin ids (Track/Up/Down/ThumbTop/Mid/Bot Normal) the chat/inventory
scrollbar uses onto a menu's own ScrollTrackSprite/etc properties.

Mutation shown to fail first: UiMenuPlainStyleTests's
Plain_OpenPopup_ScrollableOverflow_DrawsPlainTrackAndFlatThumb_NoDatArt
and Plain_ScrollablePopup_ContentFits_DrawsTrackWithNoThumb asserted
resolveCalls==0 and an all-fill scrollbar — both failed (6 resolve calls,
6 sprite quads instead of 0) against the new DrawPopupScrollbar call
before being rewritten to
Plain_OpenPopup_ScrollableOverflow_DrawsRetailScrollbarChrome_RowsStayPlain
and Plain_ScrollablePopup_ContentFits_DrawsNoScrollbarAtAll, which pin the
new sprite-chrome behavior (6 resolved ids on overflow: track, up, down,
thumb top/mid/bottom; 3 on content-fits: track+up+down, no thumb; 0 on a
menu built with no resolver) while re-asserting the rows are still plain
fills with zero retail row-sprite quads. Retail's own
RetailButtonArt=true popup path (DrawGridPopup/DrawScrollablePopup) is
untouched — its regression golden
(Retail_OpenPopup_DrawIsByteForByteUnchanged_RegressionGolden) still
passes byte-for-byte.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-09-07 15:42:25 +02:00
parent b36b036475
commit 67aba8c386
3 changed files with 96 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

60
tests/AcDream.App.Tests/UI/UiMenuPlainStyleTests.cs
View file

@ -359,8 +359,17 @@ public sealed class UiMenuPlainStyleTests
Assert.Equal(RetailChromeSprites.Border + UiMenu.PlainPadding, glyphSeg.Verts[0], 3);
}
// ── Owner live-client report 2026-09-07 ("For scrollable dropdown or the
// meta window we use the same assets as we do in for example chat or
// inventory window"): the plain popup's SCROLLBAR now draws retail's own
// chrome (the exact sprite ids RetailScrollbarChrome wires onto
// chat/inventory's own bar) — only the ROWS stayed plain. These two tests
// used to pin a fully flat/untextured scrollbar; they now pin the
// opposite: real sprite draws for the bar, untouched plain fills for the
// rows, and no visible bar at all once the content fits.
[Fact]
public void Plain_OpenPopup_ScrollableOverflow_DrawsPlainTrackAndFlatThumb_NoDatArt()
public void Plain_OpenPopup_ScrollableOverflow_DrawsRetailScrollbarChrome_RowsStayPlain()
{
int resolveCalls = 0;
var menu = MakePopupMenu(retailButtonArt: false, itemCount: 12, rowsPerColumn: 5, scrollable: true,
@ -373,27 +382,39 @@ public sealed class UiMenuPlainStyleTests
var segs = renderer.DebugSpriteSegmentVerts;
Assert.True(menu.PopupScroll.HasOverflow);
Assert.Equal(0, resolveCalls);
Assert.Equal(0, QuadCount(segs, menu.ScrollTrackSprite));
Assert.Equal(0, QuadCount(segs, menu.ScrollThumbSprite));
// Track + up + down + thumb top/mid/bottom = 6 resolved sprite ids —
// the SAME chrome ids the chat/inventory scrollbar resolves through
// the same SpriteResolve seam, no longer the flat DrawFill-only path.
Assert.Equal(6, resolveCalls);
Assert.Equal(1, QuadCount(segs, menu.ScrollTrackSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollUpSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollDownSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollThumbTopSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollThumbSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollThumbBottomSprite));
float outerTop = menu.Height;
float inX = RetailChromeSprites.Border, inY = outerTop + RetailChromeSprites.Border;
float scrollbarX = inX + PlainColumnWidth;
// The rows are untouched by the chrome swap: still a plain fill, no
// DAT row/checkbox art at all (RetailButtonArt=false's own contract).
Assert.True(HasFillQuad(segs, inX, inY, PlainColumnWidth, PlainRowHeight, menu.PlainSelectedColor),
"expected visible row 0 (selected/current) filled with PlainSelectedColor");
Assert.True(HasFillQuad(segs, scrollbarX, inY, menu.ScrollbarWidth, 5 * PlainRowHeight, menu.PlainBackgroundColor),
"expected the scrollbar track background fill");
"expected visible row 0 (selected/current) still filled with PlainSelectedColor");
Assert.Equal(0, QuadCount(segs, menu.ItemHighlightSprite));
Assert.Equal(0, QuadCount(segs, menu.ItemNormalSprite));
// popup bg(1)+outline(4) + selected row(1) + scrollbar bg(1)+outline(4) + thumb(1) = 12.
Assert.Equal(12, QuadCount(segs, 0u));
// popup bg(1)+outline(4) + selected row(1) = 6 untextured quads;
// the scrollbar itself no longer contributes any (it is all sprite
// draws now).
Assert.Equal(6, QuadCount(segs, 0u));
}
[Fact]
public void Plain_ScrollablePopup_ContentFits_DrawsTrackWithNoThumb()
public void Plain_ScrollablePopup_ContentFits_DrawsNoScrollbarAtAll()
{
var menu = MakePopupMenu(retailButtonArt: false, itemCount: 3, rowsPerColumn: 5, scrollable: true);
int resolveCalls = 0;
var menu = MakePopupMenu(retailButtonArt: false, itemCount: 3, rowsPerColumn: 5, scrollable: true,
countResolveCall: n => resolveCalls += n);
OpenAndHover(menu);
var (renderer, ctx) = MakeContext(200f, 200f);
@ -402,9 +423,18 @@ public sealed class UiMenuPlainStyleTests
Assert.False(menu.PopupScroll.HasOverflow);
// popup bg(1)+outline(4) + scrollbar bg(1)+outline(4) = 10, no thumb quad
// (nothing selected/hovered here either).
Assert.Equal(10, QuadCount(segs, 0u));
// Content-fits still draws the track + up/down buttons (retail's own
// proportion-0x88-defaults-to-1.0 rule — a content-fits bar shows a
// full-track thumb elsewhere in this class), but no thumb: 3 resolves.
Assert.Equal(3, resolveCalls);
Assert.Equal(1, QuadCount(segs, menu.ScrollTrackSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollUpSprite));
Assert.Equal(1, QuadCount(segs, menu.ScrollDownSprite));
Assert.Equal(0, QuadCount(segs, menu.ScrollThumbSprite));
// popup bg(1)+outline(4) = 5 untextured quads (nothing
// selected/hovered here either, and the scrollbar draws no fills).
Assert.Equal(5, QuadCount(segs, 0u));
}
[Fact]