Third iteration on the screen, completing AD-98. The previous substitution
stretched only the root BACKGROUND while the child widgets stayed at their
authored 800x600 pixel positions - and the background painting carries
visual anchors (the World/Characters captions are art), so the user gate
showed captions overlapping the listbox and every widget misaligned
against the stretched art.
Retail model (established at 71bf24fb): fixed-canvas pre-world screens
render at authored 800x600 and the whole composed frame stretches once at
presentation; the blitter has no stretch mode. Our equivalent now does the
same one stage earlier:
- UiRoot.FixedCanvasSize: while the char-select screen is active, the
retained tree lays out in its authored canvas and Draw scopes a uniform
scale onto TextRenderer.CanvasScale; the mouse entry points apply the
exact inverse so MouseX/MouseY and every hit test live in canvas space.
- TextRenderer.AppendQuad is the single emission chokepoint - sprites,
rects, AND glyphs scale together, including retail-authentic non-uniform
aspect distortion and stretched text. World-space HUD stays native (the
scale resets outside UiRoot.Draw).
- CharacterManagementUiController stops resizing Root to the viewport;
activate/deactivate/dispose set and clear the host canvas.
- UiDatElement returns to retail-pure copy-or-tile; the interim
StretchOwnBackgroundToFill flag is deleted.
- AD-98 updated to describe the completed substitution.
Tests: canvas-scale quad math, inverse input mapping (window click lands
on the canvas-space widget), degenerate-size guards, controller keeps
authored extent + sets/clears the canvas. App suite 5085/6 skips; live-DAT
char-select probes 3/3.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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