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fix: paper background no longer resizes when a viewport is added

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White paper fill was calculated from entity bounding boxes (paper_entity_extents),
so adding a viewport caused the paper to visually shrink to the viewport's bounds.
Now paper_limits() (layout min/max limits) is used directly, and the unused
paper_entity_extents() function is removed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-04-24 12:02:33 +03:00
commit 6b4bc1b832
3 changed files with 4 additions and 36 deletions
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7
src/scene/paper_canvas.rs
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@ -68,9 +68,10 @@ impl<'a> canvas::Program<Message> for PaperCanvas<'a> {
const DESK: Color = Color { r: 0.22, g: 0.24, b: 0.28, a: 1.0 };
frame.fill_rectangle(Point::ORIGIN, bounds.size(), DESK);
// ── White paper area — use entity extents so the fill aligns with the
// drawn DXF entity borders (title block frame, viewport border, etc.).
if let Some(((px0, py0), (px1, py1))) = self.scene.paper_entity_extents() {
// ── White paper area — use layout paper limits (actual paper size).
if let Some(((px0, py0), (px1, py1))) = self.scene.paper_limits().map(
|((x0, y0), (x1, y1))| ((x0 as f32, y0 as f32), (x1 as f32, y1 as f32)),
) {
let tl = to_px(px0, py1);
let br = to_px(px1, py0);
let pw = br.x - tl.x;