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feat(ui): D.2b-A — BringToFront + raise on show/click

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BringToFront sets a window's ZOrder one past the max among its peers.
ShowWindow now raises on open; OnMouseDown raises any pressed top-level
window (retail-faithful stacking). Existing drag/resize tests unaffected
(raise only touches ZOrder, not geometry).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-06-20 21:31:29 +02:00
parent 6409038576
commit 036db8b8ab
2 changed files with 56 additions and 0 deletions
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15
src/AcDream.App/UI/UiRoot.cs
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@ -248,6 +248,8 @@ public sealed class UiRoot : UiElement
// A left-drag starting near an edge resizes; interior drag repositions;
// otherwise it's a normal drag-drop candidate.
var window = FindWindow(target);
// Retail-faithful: pressing on a window raises it above its peers.
if (window is not null) BringToFront(window);
if (btn == UiMouseButton.Left && window is not null)
{
var edges = window.Resizable ? HitEdges(window, x, y, ResizeGrip) : ResizeEdges.None;
@ -489,6 +491,7 @@ public sealed class UiRoot : UiElement
{
if (!_windows.TryGetValue(name, out var w)) return false;
w.Visible = true;
BringToFront(w);
return true;
}
@ -510,6 +513,18 @@ public sealed class UiRoot : UiElement
return true;
}
/// <summary>Raise a top-level window above its siblings by setting its ZOrder
/// one past the current max among the OTHER top-level children. Used on Show
/// and on click. Leaves ZOrder unchanged if it is the only / already-topmost child.</summary>
public void BringToFront(UiElement window)
{
int top = window.ZOrder;
foreach (var c in Children)
if (!ReferenceEquals(c, window))
top = System.Math.Max(top, c.ZOrder + 1);
window.ZOrder = top;
}
// ── Drag-drop (retail event chain 0x15 → 0x21 → 0x1C → 0x3E) ────────
private void BeginDrag(UiElement source)