Sha256: 9de35e08d6aacc54c21acae711210e4de6ce8e32dde29e6fd7e05475bc785448
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Versions: 271
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Stored size: 1.55 KB
Contents
/* global axe, color */
function getOpacity(node) {
if (!node) {
return 1;
}
const vNode = axe.utils.getNodeFromTree(node);
if (vNode && vNode._opacity !== undefined && vNode._opacity !== null) {
return vNode._opacity;
}
const nodeStyle = window.getComputedStyle(node);
const opacity = nodeStyle.getPropertyValue('opacity');
const finalOpacity = opacity * getOpacity(node.parentElement);
// cache the results of the getOpacity check on the parent tree
// so we don't have to look at the parent tree again for all its
// descendants
if (vNode) {
vNode._opacity = finalOpacity;
}
return finalOpacity;
}
/**
* Returns the flattened foreground color of an element, or null if it can't be determined because
* of transparency
* @method getForegroundColor
* @memberof axe.commons.color
* @instance
* @param {Element} node
* @param {Boolean} noScroll (default false)
* @param {Color} bgColor
* @return {Color|null}
*/
color.getForegroundColor = function(node, noScroll, bgColor) {
const nodeStyle = window.getComputedStyle(node);
const fgColor = new color.Color();
fgColor.parseRgbString(nodeStyle.getPropertyValue('color'));
const opacity = getOpacity(node);
fgColor.alpha = fgColor.alpha * opacity;
if (fgColor.alpha === 1) {
return fgColor;
}
if (!bgColor) {
bgColor = color.getBackgroundColor(node, [], noScroll);
}
if (bgColor === null) {
const reason = axe.commons.color.incompleteData.get('bgColor');
axe.commons.color.incompleteData.set('fgColor', reason);
return null;
}
return color.flattenColors(fgColor, bgColor);
};
Version data entries
271 entries across 271 versions & 1 rubygems