a11y: draw gap around notification dot in favicon #94
1 changed files with 9 additions and 0 deletions
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@ -3,6 +3,7 @@ const createFaviconService = () => {
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const faviconWidth = 128
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const faviconHeight = 128
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const badgeRadius = 32
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const gapWidth = 24
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const initFaviconService = () => {
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const nodes = document.querySelectorAll('link[rel="icon"]')
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@ -47,6 +48,14 @@ const createFaviconService = () => {
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if (isImageLoaded(favimg)) {
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favcontext.drawImage(favimg, 0, 0, favimg.width, favimg.height, 0, 0, faviconWidth, faviconHeight)
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}
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// draw bigger transparent circle to create gap
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favcontext.globalCompositeOperation = 'destination-out'
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favcontext.beginPath()
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favcontext.arc(faviconWidth - badgeRadius, badgeRadius, badgeRadius + gapWidth, 0, 2 * Math.PI, false)
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favcontext.fill()
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favcontext.globalCompositeOperation = 'source-over'
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favcontext.fillStyle = badgeColor
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favcontext.beginPath()
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favcontext.arc(faviconWidth - badgeRadius, badgeRadius, badgeRadius, 0, 2 * Math.PI, false)
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