{"id":185166,"date":"2023-06-08T06:09:25","date_gmt":"2023-06-07T22:09:25","guid":{"rendered":"http:\/\/www.idc.net\/help\/185166\/"},"modified":"2023-06-08T06:09:25","modified_gmt":"2023-06-07T22:09:25","slug":"%e5%90%8e%e6%b5%aa%e4%ba%91%e5%b0%8f%e7%a8%8b%e5%ba%8f%e6%95%99%e7%a8%8b%ef%bc%9a%e5%be%ae%e4%bf%a1%e5%b0%8f%e7%a8%8b%e5%ba%8fapi-%e7%bb%98%e5%9b%be%c2%b7draw%ef%bc%88%e8%bf%9b%e8%a1%8c%e7%bb%98","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/185166\/","title":{"rendered":"\u540e\u6d6a\u4e91\u5c0f\u7a0b\u5e8f\u6559\u7a0b\uff1a\u5fae\u4fe1\u5c0f\u7a0b\u5e8fAPI \u7ed8\u56fe\u00b7draw\uff08\u8fdb\u884c\u7ed8\u56fe\uff09"},"content":{"rendered":"<p>\u7ed8\u56fe\u63a5\u53e3\u548c\u65b9\u6cd5 <\/p>\n<h2>canvasContext.draw<\/h2>\n<hr>\n<h3>\u5b9a\u4e49<\/h3>\n<p>\u5c06\u4e4b\u524d\u5728\u7ed8\u56fe\u4e0a\u4e0b\u6587\u4e2d\u7684\u63cf\u8ff0\uff08\u8def\u5f84\u3001\u53d8\u5f62\u3001\u6837\u5f0f\uff09\u753b\u5230 canvas \u4e2d\u3002<\/p>\n<p><strong>Tip<\/strong>: \u7ed8\u56fe\u4e0a\u4e0b\u6587\u9700\u8981\u7531<code>wx.createCanvasContext(canvasId)<\/code>\u6765\u521b\u5efa\u3002<\/p>\n<h3>\u53c2\u6570<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570<\/th>\n<th>\u7c7b\u578b<\/th>\n<th>\u8bf4\u660e<\/th>\n<th>\u6700\u4f4e\u7248\u672c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>reserve<\/td>\n<td>Boolean<\/td>\n<td>\u975e\u5fc5\u586b\u3002\u672c\u6b21\u7ed8\u5236\u662f\u5426\u63a5\u7740\u4e0a\u4e00\u6b21\u7ed8\u5236\uff0c\u5373reserve\u53c2\u6570\u4e3afalse\uff0c\u5219\u5728\u672c\u6b21\u8c03\u7528drawCanvas\u7ed8\u5236\u4e4b\u524dnative\u5c42\u5e94\u5148\u6e05\u7a7a\u753b\u5e03\u518d\u7ee7\u7eed\u7ed8\u5236\uff1b\u82e5reserver\u53c2\u6570\u4e3atrue\uff0c\u5219\u4fdd\u7559\u5f53\u524d\u753b\u5e03\u4e0a\u7684\u5185\u5bb9\uff0c\u672c\u6b21\u8c03\u7528drawCanvas\u7ed8\u5236\u7684\u5185\u5bb9\u8986\u76d6\u5728\u4e0a\u9762\uff0c\u9ed8\u8ba4 false<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>callback<\/td>\n<td>Function<\/td>\n<td>\u7ed8\u5236\u5b8c\u6210\u540e\u56de\u8c03<\/td>\n<td>1.7.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u4f8b\u5b50<\/h3>\n<pre><code>const ctx = wx.createCanvasContext('myCanvas')\n\nctx.setFillStyle('red')\nctx.fillRect(10, 10, 150, 100)\nctx.draw()\nctx.fillRect(50, 50, 150, 100)\nctx.draw()\n<\/code><\/pre>\n<p> <\/p>\n<p> <\/p>\n<h3>\u4f8b\u5b50<\/h3>\n<pre><code>const ctx = wx.createCanvasContext('myCanvas')\n\nctx.setFillStyle('red')\nctx.fillRect(10, 10, 150, 100)\nctx.draw()\nctx.fillRect(50, 50, 150, 100)\nctx.draw(true)\n<\/code><\/pre>\n<p> <\/p>\n<p> \u7ed8\u56fe\u63a5\u53e3\u548c\u65b9\u6cd5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed8\u56fe\u63a5\u53e3\u548c\u65b9\u6cd5 canvasContext.draw \u5b9a\u4e49 \u5c06\u4e4b\u524d\u5728\u7ed8\u56fe\u4e0a\u4e0b\u6587\u4e2d\u7684\u63cf\u8ff0\uff08\u8def\u5f84\u3001\u53d8\u5f62\u3001\u6837\u5f0f\uff09\u753b\u5230 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":185167,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[182398],"tags":[],"class_list":["post-185166","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mini-program"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/185166","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=185166"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/185166\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/185167"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=185166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=185166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=185166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}