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feat(ui): unify retained window mounts

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Erik 2026-07-10 22:22:25 +02:00
parent 6e9e10367f
commit a8e9503d2e
20 changed files with 823 additions and 366 deletions
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11
src/AcDream.App/UI/UiText.cs
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@ -145,9 +145,6 @@ public sealed class UiText : UiElement
/// <summary>The scroll model — also read by the linked UiScrollbar.</summary>
public UiScrollable Scroll { get; } = new();
/// <summary>True while the view is pinned to the newest line (auto-scrolls as content grows).</summary>
private bool _pinBottom = true;
private const float WheelLines = 1f; // lines advanced per wheel notch (retail = 1 line per notch)
// ── Cached layout from the last OnDraw, so OnEvent hit-tests the SAME geometry ──
@ -292,9 +289,10 @@ public sealed class UiText : UiElement
// Drive the shared scroll model with the current geometry.
Scroll.LineHeight = (int)MathF.Round(lh);
Scroll.ContentHeight = (int)MathF.Ceiling(contentH);
Scroll.ViewHeight = (int)MathF.Floor(innerH);
if (_pinBottom) Scroll.ScrollToEnd();
Scroll.SetExtents(
(int)MathF.Ceiling(contentH),
(int)MathF.Floor(innerH),
preserveEnd: true);
// UiScrollable: ScrollY=0 is TOP/oldest, ScrollY=MaxScroll is BOTTOM/newest.
// Visual layout: newest at bottom → baseY = bottom - contentH (ScrollY at max).
@ -358,7 +356,6 @@ public sealed class UiText : UiElement
// ScrollByLines sign: +down/newer, -up/older.
// e.Data0 > 0 → wheel up → want older → ScrollByLines with negative lines.
Scroll.ScrollByLines((int)(-e.Data0 * WheelLines));
_pinBottom = Scroll.AtEnd;
return true;
}