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feat(layout): add grid, safe zone, and MICR anchor alignment

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- Draw 1/8" grid overlay on layout editor canvas
- Anchor MICR second transit symbol at 2 59/64" from left
- Clamp draggable fields to printing safe zone (11/64" sides, 13/64" top, 0.5" bottom)
- Render dashed safe-zone outline on layout canvas
This commit is contained in:
Steve Dogiakos
2026-04-13 08:06:23 -06:00
parent c4e4a8c246
commit a2de7e2d9d
2 changed files with 59 additions and 13 deletions
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public/js/app.js
+44 -8
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@@ -2082,6 +2082,12 @@ function populateLayoutDropdown() {
).join('');
}
// Printing safe zone for user-adjustable fields (inches). MICR is exempt.
const SAFE_LEFT = 11 / 64;
const SAFE_RIGHT = 8.5 - 11 / 64;
const SAFE_TOP = 13 / 64;
const SAFE_BOTTOM = 3.5 - 0.5;
const SVG_NS = 'http://www.w3.org/2000/svg';
function svgEl(tag, attrs, text) {
const el = document.createElementNS(SVG_NS, tag);
@@ -2104,11 +2110,41 @@ function renderLayoutCanvas() {
// White check background
svg.appendChild(svgEl('rect', { x:0, y:0, width:W, height:H, fill:'#fff', stroke:'#bbb', 'stroke-width':1 }));
// Grid at 1/8" increments (darker every 1/4", darkest on whole inches)
for (let n8 = 1; n8 < Math.ceil(8.5 * 8); n8++) {
const x = (n8 / 8) * SCALE;
if (x >= W) break;
const isInch = n8 % 8 === 0;
const isQtr = n8 % 2 === 0;
const stroke = isInch ? '#d0d7de' : isQtr ? '#e4e8ed' : '#f0f2f5';
svg.appendChild(svgEl('line', { x1:x, y1:0, x2:x, y2:H, stroke, 'stroke-width':1 }));
}
for (let n8 = 1; n8 < Math.ceil(3.5 * 8); n8++) {
const y = (n8 / 8) * SCALE;
if (y >= H) break;
const isInch = n8 % 8 === 0;
const isQtr = n8 % 2 === 0;
const stroke = isInch ? '#d0d7de' : isQtr ? '#e4e8ed' : '#f0f2f5';
svg.appendChild(svgEl('line', { x1:0, y1:y, x2:W, y2:y, stroke, 'stroke-width':1 }));
}
// MICR reference line
const micrY = (3.5 - 0.267) * SCALE;
svg.appendChild(svgEl('line', { x1:0, y1:micrY, x2:W, y2:micrY, stroke:'#ccc', 'stroke-width':1, 'stroke-dasharray':'4,4' }));
svg.appendChild(svgEl('text', { x:4, y:micrY - 3, 'font-size':9, fill:'#bbb', 'font-family':'sans-serif' }, 'MICR'));
// Safe zone outline for user-adjustable fields
svg.appendChild(svgEl('rect', {
x: SAFE_LEFT * SCALE,
y: SAFE_TOP * SCALE,
width: (SAFE_RIGHT - SAFE_LEFT) * SCALE,
height: (SAFE_BOTTOM - SAFE_TOP) * SCALE,
fill: 'none',
stroke: '#60a5fa',
'stroke-width': 1,
'stroke-dasharray': '3,3',
}));
for (const f of layoutState.fields) {
const g = createFieldSvgElement(f, SCALE, layoutState.selectedId === f.id);
svg.appendChild(g);
@@ -2333,11 +2369,11 @@ function onLayoutDragMove(e) {
const dy = (e.clientY - layoutDrag.mouseY) / layoutState.scale;
const f = layoutState.fields.find(x => x.id === layoutDrag.fieldId);
if (!f) return;
f.x_pos = clampIn(round16(layoutDrag.origX + dx), 0, 8.5);
f.y_pos = clampIn(round16(layoutDrag.origY + dy), 0, 3.5);
f.x_pos = clampIn(round16(layoutDrag.origX + dx), SAFE_LEFT, SAFE_RIGHT);
f.y_pos = clampIn(round16(layoutDrag.origY + dy), SAFE_TOP, SAFE_BOTTOM);
if (layoutDrag.moveEnd) {
f.x_end_pos = clampIn(round16(layoutDrag.origX2 + dx), 0, 8.5);
f.y_end_pos = clampIn(round16(layoutDrag.origY2 + dy), 0, 3.5);
f.x_end_pos = clampIn(round16(layoutDrag.origX2 + dx), SAFE_LEFT, SAFE_RIGHT);
f.y_end_pos = clampIn(round16(layoutDrag.origY2 + dy), SAFE_TOP, SAFE_BOTTOM);
}
// Update just the dragged element for smooth performance
const svg = document.querySelector('#layout-canvas-container svg');
@@ -2364,11 +2400,11 @@ function nudgeLayoutField(dx, dy) {
const f = layoutState.fields.find(x => x.id === layoutState.selectedId);
if (!f) return;
const S = 1 / 16;
f.x_pos = clampIn(round16(f.x_pos + dx * S), 0, 8.5);
f.y_pos = clampIn(round16(f.y_pos + dy * S), 0, 3.5);
f.x_pos = clampIn(round16(f.x_pos + dx * S), SAFE_LEFT, SAFE_RIGHT);
f.y_pos = clampIn(round16(f.y_pos + dy * S), SAFE_TOP, SAFE_BOTTOM);
if (f.field_type === 'Line' || f.field_type === 'Graph') {
f.x_end_pos = clampIn(round16(f.x_end_pos + dx * S), 0, 8.5);
f.y_end_pos = clampIn(round16(f.y_end_pos + dy * S), 0, 3.5);
f.x_end_pos = clampIn(round16(f.x_end_pos + dx * S), SAFE_LEFT, SAFE_RIGHT);
f.y_end_pos = clampIn(round16(f.y_end_pos + dy * S), SAFE_TOP, SAFE_BOTTOM);
}
updateLayoutSidebar(f);
renderLayoutCanvas();