Function applyViewportTransform

app.js:227–233

()

}

function applyViewportTransform() {
  if (!previewViewport) return;
  // OLED zoom is applied via integer `scale` in updatePreviewSize (pixel-perfect).
  const z = driverMode === "u8g2" ? 1 : clamp(zoomFactor || 1, 0.5, 3);
  previewViewport.style.transform = `translate(${viewportPanX}px, ${viewportPanY}px) scale(${z})`;
  try { ensureRulers(); } catch (_) {}
}

function updateCanvasCursorClass() {
  if (!previewWrapper) previewWrapper = document.querySelector(".preview-wrapper");