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Rescue Paperjet v1 implementation

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This commit is contained in:
Elijah 2026-08-14 21:05:22 -07:00
parent 7ff5c8130d
commit db9e2ca51b
83 changed files with 6186 additions and 3894 deletions
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15
frontend/src/lib/coords.ts
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@ -5,19 +5,18 @@ export interface PdfRect { x: number; y: number; width: number; height: number }
export interface ScreenRect { x: number; y: number; width: number; height: number }
export interface ViewportParams {
scale: number; // CSS Zoom level (1.0 = 100%)
scale: number; // CSS zoom level (1.0 = 100%)
rotation: number; // 0, 90, 180, 270 (clockwise)
canonicalWidth: number; // Unrotated CropBox width in PDF points
canonicalHeight: number;// Unrotated CropBox height in PDF points
dpr?: number; // Device Pixel Ratio (defaults to 1)
}
function getEffectiveScale(vp: ViewportParams): number {
return vp.scale * (vp.dpr || 1);
dpr?: number; // Backing-store density; never part of CSS geometry
}
export function pdfToScreen(p: PdfPoint, vp: ViewportParams): ScreenPoint {
const s = getEffectiveScale(vp);
// Screen points are CSS pixels. Device-pixel-ratio only controls the PDF.js
// backing canvas; including it here would make Fabric objects overflow the
// CSS overlay on retina displays.
const s = vp.scale;
const { rotation, canonicalWidth: W, canonicalHeight: H } = vp;
const { x, y } = p;
@ -33,7 +32,7 @@ export function pdfToScreen(p: PdfPoint, vp: ViewportParams): ScreenPoint {
}
export function screenToPdf(p: ScreenPoint, vp: ViewportParams): PdfPoint {
const s = getEffectiveScale(vp);
const s = vp.scale;
const { rotation, canonicalWidth: W, canonicalHeight: H } = vp;
const sx = p.x / s;
const sy = p.y / s;