Steffen Becker
639fac90fd
The page grid was one repeating cycle, so every page had to be the same size. It is now a table of height runs the placement pass grows as each section's first page becomes known, and the sheets are one box per page instead of a repeating gradient — .paper reserves the widest section's paper, a narrower one takes the difference as a right inset. Layout ▸ Orientation offers "this section"; the size stays document-wide in the ribbon but round-trips per section from a file.
59 lines
1.8 KiB
TypeScript
59 lines
1.8 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { PageGrid, gridFromRuns } from '../../src/lib/editor/extensions/pageBreaks';
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// A4 portrait / landscape at 96dpi, plus the 20px gap between two pages.
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const P = 1123;
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const L = 794;
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const GAP = 20;
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describe('PageGrid', () => {
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it('is uniform until a section says otherwise', () => {
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const g = new PageGrid(P);
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expect(g.topOf(1)).toBe(0);
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expect(g.topOf(3)).toBe(2 * (P + GAP));
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expect(g.pageAt(0)).toBe(1);
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expect(g.pageAt(P + GAP)).toBe(2);
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expect(g.pageAt(2 * (P + GAP) + 10)).toBe(3);
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});
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it('moves every page below a section on its own paper', () => {
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const g = new PageGrid(P);
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g.setFrom(2, L);
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g.setFrom(3, P);
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expect(g.heightOf(2)).toBe(L);
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expect(g.heightOf(3)).toBe(P);
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expect(g.topOf(2)).toBe(P + GAP);
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expect(g.topOf(3)).toBe(P + GAP + L + GAP);
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expect(g.pageAt(P + GAP)).toBe(2);
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expect(g.pageAt(P + GAP + L + GAP)).toBe(3);
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expect(g.bottomOf(3)).toBe(P + GAP + L + GAP + P);
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});
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it('lets a later run replace one it starts on', () => {
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const g = new PageGrid(P);
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g.setFrom(4, L);
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g.setFrom(4, P);
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expect(g.heightOf(4)).toBe(P);
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expect(g.topOf(5)).toBe(4 * (P + GAP));
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});
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it('boxes every page for the layers that paint them', () => {
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const g = new PageGrid(P);
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g.setFrom(2, L);
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expect(g.boxes(3)).toEqual([
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{ top: 0, height: P },
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{ top: P + GAP, height: L },
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{ top: P + GAP + L + GAP, height: L },
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]);
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});
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it('reads back the runs it publishes', () => {
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const g = gridFromRuns(`2|${L},3|${P}`, P);
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expect(g.heightOf(1)).toBe(P);
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expect(g.heightOf(2)).toBe(L);
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expect(g.heightOf(3)).toBe(P);
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// A document with no sections writes no runs at all.
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expect(gridFromRuns('', P).heightOf(9)).toBe(P);
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});
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});
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