Flipbook Codepen ((hot))

function onDragMove(e) if(!isDragging) return; e.preventDefault(); let currentX = e.type.includes('mouse') ? e.clientX : (e.touches ? e.touches[0].clientX : e.clientX); let deltaX = currentX - dragStartX; // threshold flip detection if(!dragProcessed && Math.abs(deltaX) > dragThreshold) if(deltaX > 0) // drag right -> previous page if(currentPage > 1) prevPage(); dragProcessed = true; else dragProcessed = true; else if(deltaX < 0) // drag left -> next page if(currentPage < TOTAL_PAGES) nextPage(); dragProcessed = true; else dragProcessed = true;

// attach both mouse and touch events function attachDragEvents() canvas.addEventListener('mousedown', onPointerStart); window.addEventListener('mousemove', onPointerMove); window.addEventListener('mouseup', onPointerEnd); flipbook codepen

JS pattern:

// main content style ctx.font = `500 $Math.floor(canvas.height * 0.06)px "Segoe UI", "Courier New", monospace`; ctx.fillStyle = '#3a2c1e'; ctx.shadowBlur = 0; function onDragMove(e) if(