Function notCrossZoomLimits

scripts/reading.js:2592–2624

(x, y, scale = false)

}

function notCrossZoomLimits(x, y, scale = false)
{
	scale = scale !== false ? scale : scalePrevData.scale;

	let indexSize = getIndexImagesSize((config.readingGlobalZoom && readingViewIs('scroll')) ? (currentIndex - 1) : currentZoomIndex);

	let maxX = indexSize.width * 0.5 * scale - originalRect.width * 0.5;
	let minX = indexSize.width * -0.5 * scale - originalRect.width * -0.5;

	if(maxX < 0) maxX = 0;
	if(minX > 0) minX = 0;

	let maxDiff = readingViewIs('scroll') ? ((originalRect.top + originalRect.height) - (originalRectReadingBody.top + originalRectReadingBody.height)) : 0;
	let minDiff = readingViewIs('scroll') ? (originalRect.top - originalRectReadingBody.top) : 0;

	let maxY = (indexSize.height * 0.5 * scale - originalRect.height * 0.5) - (minDiff < 0 ? minDiff : 0);
	let minY = (indexSize.height * -0.5 * scale - originalRect.height * -0.5) - (maxDiff > 0 ? maxDiff + readingMargin().top : 0);

	if(maxY < 0) maxY = 0;
	if(minY > 0) minY = 0;

	if(x > maxX)
		x = maxX;
	else if(x < minX)
		x = minX;

	if(y > maxY)
		y = maxY;
	else if(y < minY)
		y = minY;

	return {x: x, y: y, maxX: maxX, maxY: maxY, height: indexSize.height, width: indexSize.width};
}

// Drag zoom
function dragZoom(x, y, animation = false)