Showing the changes to assets/javascripts/lib (1 of 5 files). Show all
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| 1 | +defaultUrl = null | |
| 2 | +currentSlug = null | |
| 3 | + | |
| 4 | +imageCache = {} | |
| 5 | +urlCache = {} | |
| 6 | + | |
| 7 | +withImage = (url, action) -> | |
| 8 | + if imageCache[url] | |
| 9 | + action(imageCache[url]) | |
| 10 | + else | |
| 11 | + img = new Image() | |
| 12 | + img.src = url | |
| 13 | + img.onload = () => | |
| 14 | + imageCache[url] = img | |
| 15 | + action(img) | |
| 16 | + | |
| 17 | +@setFaviconForDoc = (doc) -> | |
| 18 | + return if currentSlug == doc.slug | |
| 19 | + | |
| 20 | + favicon = $('link[rel="icon"]') | |
| 21 | + | |
| 22 | + if urlCache[doc.slug] | |
| 23 | + favicon.href = urlCache[doc.slug] | |
| 24 | + currentSlug = doc.slug | |
| 25 | + return | |
| 26 | + | |
| 27 | + styles = window.getComputedStyle($("._icon-#{doc.slug}"), ':before') | |
| 28 | + | |
| 29 | + bgUrl = styles['background-image'].slice(5, -2) | |
| 30 | + bgSize = if bgUrl.includes('@2x') then 32 else 16 | |
| 31 | + bgX = parseInt(styles['background-position-x'].slice(0, -2)) | |
| 32 | + bgY = parseInt(styles['background-position-y'].slice(0, -2)) | |
| 33 | + | |
| 34 | + withImage(bgUrl, (img) -> | |
| 35 | + canvas = document.createElement('canvas') | |
| 36 | + | |
| 37 | + canvas.width = bgSize | |
| 38 | + canvas.height = bgSize | |
| 39 | + canvas.getContext('2d').drawImage(img, bgX, bgY) | |
| 40 | + | |
| 41 | + if defaultUrl == null | |
| 42 | + defaultUrl = favicon.href | |
| 43 | + | |
| 44 | + urlCache[doc.slug] = canvas.toDataURL() | |
| 45 | + favicon.href = urlCache[doc.slug] | |
| 46 | + | |
| 47 | + currentSlug = doc.slug | |
| 48 | + ) | |
| 49 | + | |
| 50 | +@resetFavicon = () -> | |
| 51 | + if defaultUrl != null and currentSlug != null | |
| 52 | + $('link[rel="icon"]').href = defaultUrl | |
| 53 | + currentSlug = null | |