{"id":3421,"date":"2012-05-19T22:08:59","date_gmt":"2012-05-19T13:08:59","guid":{"rendered":"http:\/\/www.webcyou.com\/?p=3421"},"modified":"2012-05-19T22:35:29","modified_gmt":"2012-05-19T13:35:29","slug":"html5-canvas","status":"publish","type":"post","link":"https:\/\/www.webcyou.com\/?p=3421","title":{"rendered":"HTML5 canvas"},"content":{"rendered":"
HTML5\u306e\u65b0\u8981\u7d20\u306e\u4e00\u3064\u300ccanvas\u300d\u8981\u7d20\u306e\u4f7f\u7528\u65b9\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002<\/div>\n
<\/div>\n
<\/div>\n
canvas\u8981\u7d20\u306e\u8a18\u8ff0\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a<\/div>\n
<\/div>\n
HTML<\/strong><\/div>\n
\n
<canvas id="canvas" width="100" height="100"><\/canvas><\/pre>\n<\/div>\n
<\/div>\n
\n
canvas\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u521d\u671f\u8a2d\u5b9a<\/div>\n
<\/div>\n
JavaScript<\/strong><\/div>\n
<script type="text\/javascript">\r\n  function draw(){\r\n    var canvas = document.getElementById("canvas");\r\n    var context = canvas.getContext("2d");\r\n\r\n    context.beginPath();\r\n    context.strokeStyle = "rgb(255, 0, 0)";\r\n    context.strokeRect(10, 10, 70, 70);\r\n}\r\ndraw();\r\n<\/script><\/pre>\n
document.getElementById(“canvas”)\u3067canvas\u8981\u7d20\u3092\u53d6\u5f97\u3057\u5909\u6570\u300ccanvas\u300d\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002<\/div>\n
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var canvas = document.getElementById(\"canvas\");<\/pre>\n<\/div>\n
\u7d9a\u3044\u3066\u3001\u7dda\u753b\u306a\u3069\u3092\u63cf\u753b\u3059\u308b\u305f\u3081\u306e\u30b3\u30f3\u30c6\u30af\u30b9\u30c8\u3092canvas\u8981\u7d20\u306econtext\u3092\u53d6\u5f97\u3057\u3001\u5f15\u6570\u30922d\u306b\u8a2d\u5b9a\u3057\u3001\u5909\u6570\u300ccontext\u300d\u306b\u4ee3\u5165\u3002<\/div>\n
<\/div>\n
\n
var context = canvas.getContext(\"2d\");<\/pre>\n
<\/div>\n
2\u6b21\u5143\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u306e\u5834\u5408\u306f\u300c2d\u300d\u305d\u306e\u4ed6\u30013d\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/div>\n
<\/div>\n
\u7d9a\u3044\u3066\u3001<\/div>\n
context.beginPath();\u3067\u30d1\u30b9\u306e\u521d\u671f\u5316\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/div>\n
<\/div>\n
\u30d1\u30b9\u306f0\u500b\u4ee5\u4e0a\u306e\u30b5\u30d6\u30d1\u30b9\u3092\u6301\u3061\u3001\u30b5\u30d6\u30d1\u30b9\u306b\u59cb\u70b9\u5024\u3001\u7d42\u70b9\u5024\u3092\u3082\u305f\u305b\u308b\u3053\u3068\u3067\u3001\u7dda\u306e\u63cf\u753b\u304c\u884c\u3048\u307e\u3059\u3002<\/div>\n
<\/div>\n
\n
context.strokeStyle = \"rgb(255, 0, 0)\";<\/pre>\n<\/div>\n
<\/div>\n
strokeStyle\u3067\u7dda\u306e\u8272\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/div>\n
<\/div>\n
\u00a0“rgb(255, 0, 0)”;\u306f\u8d64\u306b\u306a\u308a\u307e\u3059\u3002<\/div>\n
<\/div>\n
\u6700\u5f8c\u306econtext.strokeRect(10, 10, 70, 70);<\/div>\n
<\/div>\n
\u306estrokeRect\u30e1\u30bd\u30c3\u30c9\u3067\u6b63\u65b9\u5f62\u3092\u63cf\u753b\u3057\u3066\u3044\u307e\u3059\u3002<\/div>\n
\u5024\u306f\uff08\u6b63\u65b9\u5f62\u306e\u5de6\u4e0a\u306eX\u5ea7\u6a19,\u6b63\u65b9\u5f62\u306e\u5de6\u4e0a\u306eY\u5ea7\u6a19,\u6a2a\u5e45,\u7e26\u5e45);<\/div>\n
\u3068\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/div>\n
<\/div>\n
\u56f3\u3067\u8868\u3059\u3068\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/div>\n
<\/div>\n
\"\"<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\u5024\u3092\u5909\u66f4\u3057\u3066\u78ba\u8a8d\u3059\u308b\u3068\u826f\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/div>\n
<\/div>\n
\u4ee5\u4e0a\u3001<\/div>\n
canvas\u306b\u6b63\u65b9\u5f62\u306e\u7dda\u3092\u63cf\u304d\u65b9\u3067\u3057\u305f\u3002<\/div>\n","protected":false},"excerpt":{"rendered":"
HTML5\u306e\u65b0\u8981\u7d20\u306e\u4e00\u3064\u300ccanvas\u300d\u8981\u7d20\u306e\u4f7f\u7528\u65b9\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002 canvas\u8981\u7d20\u306e\u8a18\u8ff0\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a HTML <canvas id="canvas" width="100&quo […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[171,59,176,166,47,178],"class_list":["post-3421","post","type-post","status-publish","format-standard","hentry","category-html5","tag-android","tag-android-sdk","tag-html5","tag-iphone","tag-javascript-2","tag-178"],"_links":{"self":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts\/3421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3421"}],"version-history":[{"count":4,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts\/3421\/revisions"}],"predecessor-version":[{"id":3439,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts\/3421\/revisions\/3439"}],"wp:attachment":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}