{"type":"rich","provider_name":"Hatena Blog","categories":["JavaScript","HTML5"],"height":"190","provider_url":"https://hatena.blog","image_url":null,"url":"https://64.hateblo.jp/entry/2013/05/12/100707","description":"img\u30bf\u30b0\u3084CSS\u306ebackground\u306b\u8a2d\u5b9a\u3057\u305f\u753b\u50cf\u306e\u5834\u5408\u30012\u500d\u30b5\u30a4\u30ba\u306e\u753b\u50cf\u3092\u7528\u610f\u3057\u3066\u3084\u308c\u3070\u3044\u3044\u306e\u3067\u3059\u304c\u3001 Canvas\u306f\u4f8b\u3048\u30702\u500d\u30b5\u30a4\u30ba\u306e\u753b\u50cf\u3092drawImage()\u3067\u7e2e\u3081\u3066\u8cbc\u4ed8\u3051\u3066\u3082Retina\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u4e0a\u3067\u306f\u30dc\u30b1\u30dc\u30b1\u3067\u3059\u3002 canvas.width\u3068canvas.style.width\u306f\u5225\u7269 canvas.width, height\u306f\u63cf\u753b\u9818\u57df\u306e\u5927\u304d\u3055\u3092\u3001 canvas.style.width, height\u306fCanvas\u81ea\u4f53\u306e\u5927\u304d\u3055\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002Retina\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306b\u5bfe\u5fdc\u3055\u305b\u308b\u5834\u5408\u3001\u63cf\u753b\u9818\u57df\u306e\u5927\u304d\u3055\u3092Canvas\u81ea\u4f53\u306e\u5927\u304d\u3055\u306b\u5bfe\u3057\u3066 2\u500d\u306b\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u300110\u2026","blog_title":"tohashi's blog","author_url":"https://blog.hatena.ne.jp/t930/","blog_url":"https://64.hateblo.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2F64.hateblo.jp%2Fentry%2F2013%2F05%2F12%2F100707\" title=\"Canvas\u3092Retina\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306b\u5bfe\u5fdc\u3055\u305b\u308b - tohashi&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2013-05-12 10:07:07","title":"Canvas\u3092Retina\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306b\u5bfe\u5fdc\u3055\u305b\u308b","width":"100%","author_name":"t930","version":"1.0"}