3593d6623d
- 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>
81 lines
2.9 KiB
C#
81 lines
2.9 KiB
C#
using AcDream.App.UI;
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using Xunit;
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namespace AcDream.App.Tests.UI;
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/// <summary>
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/// Pure unit tests for <see cref="UiScrollbar.ThumbRect"/> — no GL dependency.
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/// </summary>
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public class UiScrollbarTests
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{
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// Model: content=400, view=100, trackLen=200.
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// ThumbRatio = 100/400 = 0.25 → thumbH = max(8, 200*0.25) = 50.
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// Travel = 200 - 50 = 150.
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[Fact]
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public void ThumbRect_AtStart_HasCorrectSizeAndZeroOffset()
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{
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var m = new UiScrollable { ContentHeight = 400, ViewHeight = 100 };
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// PositionRatio = 0 (start).
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var (y, h) = UiScrollbar.ThumbRect(m, trackTop: 0f, trackLen: 200f);
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Assert.Equal(50f, h, 3f);
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Assert.Equal(0f, y, 3f);
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}
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[Fact]
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public void ThumbRect_AtEnd_PinsToBottomOfTrack()
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{
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var m = new UiScrollable { ContentHeight = 400, ViewHeight = 100 };
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m.ScrollToEnd(); // PositionRatio = 1.
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float trackTop = 16f, trackLen = 200f;
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var (y, h) = UiScrollbar.ThumbRect(m, trackTop, trackLen);
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Assert.Equal(50f, h, 3f);
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// y = trackTop + travel * 1 = 16 + 150 = 166.
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Assert.Equal(166f, y, 3f);
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}
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[Fact]
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public void ThumbRect_WithButtonH_CorrectlyOffsetsFromTrackTop()
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{
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// Matches task spec: content=400, view=100, trackLen=200, PositionRatio=1.
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// thumbH=50; travel=150; y = trackTop + 150 = trackTop + 150.
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var m = new UiScrollable { ContentHeight = 400, ViewHeight = 100 };
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m.ScrollToEnd();
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var (y, h) = UiScrollbar.ThumbRect(m, trackTop: 16f, trackLen: 200f);
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Assert.Equal(50f, h, 3f);
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Assert.Equal(166f, y, 3f); // 16 + 150
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}
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[Fact]
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public void ThumbRect_MidScroll_InterpolatesPosition()
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{
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// content=400 view=100 → MaxScroll=300; ScrollY=150 → PositionRatio=0.5.
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var m = new UiScrollable { ContentHeight = 400, ViewHeight = 100 };
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m.SetScrollY(150);
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Assert.Equal(0.5f, m.PositionRatio, 3);
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var (y, h) = UiScrollbar.ThumbRect(m, trackTop: 0f, trackLen: 200f);
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Assert.Equal(50f, h, 3f);
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// y = 0 + 150 * 0.5 = 75.
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Assert.Equal(75f, y, 3f);
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}
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[Fact]
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public void ThumbRect_SmallContent_EnforcesMinThumb()
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{
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// content=1000, view=10, trackLen=200 → ThumbRatio=0.01 → raw=2 < 8 → clamp to 8.
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var m = new UiScrollable { ContentHeight = 1000, ViewHeight = 10 };
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var (_, h) = UiScrollbar.ThumbRect(m, trackTop: 0f, trackLen: 200f);
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Assert.Equal(8f, h, 3f);
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}
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[Fact]
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public void ThumbRect_NoOverflow_ThumbFillsTrack()
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{
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// content <= view → ThumbRatio = 1 → thumbH = trackLen.
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var m = new UiScrollable { ContentHeight = 50, ViewHeight = 100 };
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var (y, h) = UiScrollbar.ThumbRect(m, trackTop: 16f, trackLen: 100f);
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Assert.Equal(100f, h, 3f);
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Assert.Equal(16f, y, 3f); // travel = 0 → y = trackTop
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}
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}
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