7552dcba39
- Add `DatFont` property (UiDatFont?): when set, OnDraw uses ctx.DrawStringDat + datFont.MeasureWidth for all transcript lines; BitmapFont path unchanged as fallback when DatFont is null. - Cache `_lastDatFont` alongside `_lastFont` so HitChar hit-tests the same advance source that drew the last frame. - HitChar prefers `_lastDatFont` (via UiDatFont.GlyphAdvance) over `_lastFont` (via bf.Advance) for column resolution, keeping drag-select and Ctrl+C accurate with the dat font. - Scroll event handler uses DatFont?.LineHeight first, so the wheel quantum stays correct when the dat font has a different line height. - WheelLines 3f → 1f: retail UIElement_Text::HandleMouseWheel (@0x471450) advances one line per notch; our 3-line quantum was wrong. - Add UiChatViewDatFontTests: pins GlyphAdvance formula (Before+Width+After = 10) and CharIndexAt dat-advance integration. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
30 lines
919 B
C#
30 lines
919 B
C#
using AcDream.App.UI;
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using DatReaderWriter.Types;
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using Xunit;
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namespace AcDream.App.Tests.UI;
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public class UiChatViewDatFontTests
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{
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// Synthetic per-char advance: each glyph 10px (Before=2,Width=6,After=2).
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private static FontCharDesc Glyph(char c) => new()
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{
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Unicode = c, HorizontalOffsetBefore = 2, Width = 6, HorizontalOffsetAfter = 2,
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OffsetX = 0, OffsetY = 0, Height = 12, VerticalOffsetBefore = 0,
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};
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[Fact]
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public void CharIndexAt_UsesDatGlyphAdvance()
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{
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float Adv(char c) => UiDatFont.GlyphAdvance(Glyph(c));
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Assert.Equal(0, UiChatView.CharIndexAt("abc", Adv, 4f));
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Assert.Equal(1, UiChatView.CharIndexAt("abc", Adv, 12f));
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Assert.Equal(3, UiChatView.CharIndexAt("abc", Adv, 100f));
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}
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[Fact]
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public void GlyphAdvance_MatchesRetailFormula()
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{
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Assert.Equal(10f, UiDatFont.GlyphAdvance(Glyph('x')));
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}
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}
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