{"id":4296,"date":"2014-08-12T18:31:18","date_gmt":"2014-08-12T10:31:18","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=4296"},"modified":"2018-06-12T10:23:52","modified_gmt":"2018-06-12T02:23:52","slug":"image-dominant-color-get-rgbaster-js","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2014\/08\/image-dominant-color-get-rgbaster-js\/","title":{"rendered":"\u56fe\u7247\u4e3b\u8272\u83b7\u53d6\u811a\u672crgbaster.js\u5c0f\u4ecb\u7ecd\u5c0f\u4f7f\u7528"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com<\/a>
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=4296<\/a><\/p>\n

\u4e00\u3001\u6211\u60f3\u5199\u4e00\u7bc7\u957f\u7bc7\u5c0f\u8bf4<\/h3>\n

\u6211\u60f3\u5199\u4e00\u7bc7\u957f\u7bc7\u5c0f\u8bf4\uff0c\u6bcf\u5929\u4e0a\u4e0b\u73ed\u5730\u94c1\u7684\u51e0\u4e2a\u5c0f\u65f6\u5199\u5199\u3002\u4e0d\u8fc7\u8fd8\u6ca1\u5b8c\u5168\u6784\u601d\u597d\u3002\u636e\u8bf4\uff0c\u4eba\u5728\u5b9e\u73b0\u4f1f\u5927\u7684\u8ba1\u5212\u4e4b\u524d\u6700\u597d\u4e0d\u8981\u8ddf\u522b\u4eba\u8bb2\uff0c\u7b49\u5927\u7c73\u5dee\u4e0d\u591a\u716e\u719f\u7684\u65f6\u5019\uff0c\u518d\u666e\u7167\u56db\u65b9\u3002\u4f46\u662f\u5462\uff0c\u4e00\u76f4\u618b\u5728\u5fc3\u91cc\u4e5f\u614c\u5f97\u5f88\uff0c\u5b9e\u5728\u5fcd\u4e0d\u4f4f\u4e86\uff0c\u8fd9\u91cc\u4e00\u5410\u4e3a\u5feb\uff0c\u53cd\u6b63\u662f\u4e2a\u5c0f\u560e\u5431\u89d2\u7684\u5730\u65b9\uff0c\u5410\u4e2a\u706b\u661f\uff08\u661f\u661f\u4e4b\u706b\uff09\u6ca1\u4eba\u53d1\u73b0\u7684\uff0c(*^__^*) \u563b\u563b\u2026\u2026 <\/p>\n

\u6211\u7422\u78e8\u7740\uff0c\u6bcf\u5468\u5199\u4e00\u6bb5\uff0c\u50cf\u5468\u520a\u4e00\u6837\uff0c\u5199\u4e2a10\u5e74\uff0c\u6069\uff0c\u5dee\u4e0d\u591a\u4e86\u3002\u8bf4\u4e0d\u5b9a\u4f1a\u706b\uff0c\u54c8\u54c8\uff01\uff01<\/p>\n

\u8865\u5145\u4e8e2018-01-31<\/strong>
\n\u5982\u679c\u8981\u53d6\u591a\u4e2a\u989c\u8272\uff0c\u63a8\u8350\u4f7f\u7528color-thief\uff1ahttps:\/\/github.com\/lokesh\/color-thief<\/a><\/mark><\/p>\n

\u4e8c\u3001rgbaster.js\u5c0f\u4ecb\u7ecd<\/h3>\n

rgbaster.js<\/code>\u662f\u6bb5\u5c0f\u811a\u672c\uff0c\u53ef\u4ee5\u83b7\u5f97\uff08\u5177\u6709\u8bbf\u95ee\u6743\u9650\u7684\uff09\u56fe\u7247\u7684\u4e3b\u8272\uff0c\u6b21\u8272\u7b49\uff0c\u7136\u540e\uff0c\u53d1\u6325\u6211\u4eec\u7684\u521b\u610f\uff0c\u5b9e\u73b0\u4e00\u4e9b\u7cbe\u5f69\u7684Web\u4ea4\u4e92\u6548\u679c\u3002<\/p>\n

rgbaster.js<\/code>\u7684Github\u9879\u76ee\u5730\u5740\u662f\uff1ahttps:\/\/github.com\/briangonzalez\/rgbaster.js<\/a><\/p>\n

\u5982\u4f55\u4f7f\u7528\uff1f<\/strong>
\n\u5982\u4f55\u8ba9\u59b9\u5b50\u4e3a\u4f60\u4e0b\u53a8\uff1f\u9996\u5148\uff0c\u4f60\u5f97\u6709\u4e00\u4e2a\u53a8\u623f\u3002\u540c\u6837\u7684\uff0c\u8981\u4f7f\u7528rgbaster.js<\/code>\uff0c\u9996\u5148\uff0c\u4f60\u5f97\u5148\u8c03\u7528\u4e4b\uff1a<\/p>\n

\n
<script src=\"http:\/\/rawgit.com\/briangonzalez\/rgbaster.js\/master\/rgbaster.js\"><\/script><\/pre>\n<\/div>\n
\u7136\u540e\uff0c\u4f60\u5f97\u6709\u4e2a\u83dc\u8c31\uff0c\u77e5\u9053\u8be5\u5982\u4f55\u5bf9\u59b9\u5b50\u4e0b\u624b\uff1a<\/p>\n
\n
var img = document.getElementById('image');\n\/\/ \u6216\u8005<\/span>\nvar img = 'http:\/\/example.com\/path-to-image.jpg'\n\nRGBaster.colors(img, {\n  success: function(payload) {\n    \/\/ payload.dominant\u662f\u4e3b\u8272\uff0cRGB\u5f62\u5f0f\u8868\u793a\n    \/\/ payload.secondary\u662f\u6b21\u8272\uff0cRGB\u5f62\u5f0f\u8868\u793a\n    \/\/ payload.palette\u662f\u8c03\u8272\u677f\uff0c\u542b\u591a\u4e2a\u4e3b\u8981\u989c\u8272\uff0c\u6570\u7ec4<\/span>\n    console.log(payload.dominant);\n    console.log(payload.secondary);\n    console.log(payload.palette);\n  }\n});<\/pre>\n<\/div>\n
\u770b\u6765\uff0c\u8fd9\u4e2a\u59b9\u5b50\u5f88\u597d\u4e0b\u624b\u554a\uff01<\/p>\n
\u5c31\u4e00\u4e2a\u65b9\u6cd5\uff0cRGBaster.colors<\/code>\u5c31\u53ef\u4ee5\u4e86\uff0c\u7b2c1\u4e2a\u53c2\u6570img<\/code>\u53ef\u4ee5\u662f\u56fe\u7247DOM\u4e5f\u53ef\u4ee5\u662f\u56fe\u7247\u7684URL\u5730\u5740\u3002\u540e\u9762\u5c31\u662f\u53ef\u9009\u53c2\u6570\uff0c\u8bf4\u5230\u53ef\u9009\u53c2\u6570\uff0c\u4e0d\u53easuccess<\/code>\u8fd9\u4e00\u4e2a\uff0c\u8fd8\u6709\u4e0b\u9762\u8fd9\u51e0\u4f4d\u5144\u5f1f\uff1a<\/p>\n
\n
RGBaster.colors(img, {\n  paletteSize: 30, \/\/ \u8c03\u8272\u677f\u5927\u5c0f<\/span>\n  exclude: [ 'rgb(255,255,255)' ],  \/\/ \u4e0d\u5305\u62ec\u767d\u8272<\/span>\n  success: function(payload){\n    \/\/ \u5305\u542b\u4e00\u4e9b\u989c\u8272\u4fe1\u606f(payload)\u7684\u56de\u8c03<\/span>\n  }\n})<\/pre>\n<\/div>\n
paletteSize<\/code>\u4e3a30<\/code>, \u5219payload.palette<\/code>\u5c31\u662f\u4e2a\u5305\u542b\u524d30<\/code>\u4e3b\u8981\u989c\u8272\u503c\u7684\u6570\u7ec4\u3002
\nexclude<\/code>\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u989c\u8272\u4e0d\u53c2\u4e0e\uff0c\u5254\u9664\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u5c0f\u9f99\u5973\u821e\u5251\u7684\u56fe\u7247\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u7684\u662f\u5176\u821e\u5251\u7684\u80cc\u666f\u3002\u4f46\u662f\uff0c\u7531\u4e8e\u5c0f\u9f99\u5973\u957f\u5e74\u53e4\u5893\uff0c\u7f3a\u5c11\u9633\u5149\uff0c\u9762\u8272\u767d\u7699\uff0c\u52a0\u4e0a\u603b\u662f\u4e00\u88ad\u767d\u8863\uff0c\u8fd9\u5927\u5927\u7684\u767d\u8272\u867d\u662f\u4e3b\u8272\uff0c\u4f46\u5374\u6211\u4eec\u60f3\u8981\u7684\uff0c\u4e8e\u662f\u9700\u8981\u5254\u9664\u3002
\n\"\u4e00\u88ad\u767d\u8863\u3001\u8138\u8272\u82cd\u767d\u7684\u5c0f\u9f99\u5973\"<\/p>\n
success<\/code>\u5c31\u662f\u6211\u4eec\u4e0b\u53a8\u7684\u4e3b\u8981\u5185\u5bb9\u4e86\uff0c\u56de\u8c03\u4e2d\u7684payload<\/code>\u53c2\u6570\uff0c\u5305\u542b\uff0c\u4e3b\u8272\u3001\u6b21\u8272\u4ee5\u53ca\u8c03\u8272\u677f\u4fe1\u606f\uff0c\u7edd\u5bf9\u53ef\u4ee5\u6ee1\u8db3\u6211\u4eec\u7edd\u5927\u591a\u6570\u7684\u9700\u6c42\u3002<\/p>\n
\u4e09\u3001rgbaster.js\u5c0f\u4f7f\u7528<\/h3>\n
\u4e0b\u9762\u770b\u770b\u59b9\u5b50\u662f\u5982\u4f55\u4e0b\u53a8\u7684\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1argbaster.js\u4e0eslide\u56fe\u7247\u80cc\u666f\u53d8\u53d8\u53d8demo<\/a><\/p>\n
\u70b9\u51fb\u4e0b\u9762\u7684\u56db\u4e2a\u5706\u70b9\u6309\u94ae\u8d70\u8d77\uff1a
\n\"4\u4e2a\u5706\u70b9\u6309\u94ae\"<\/p>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u56fe\u7247slide\u7684\u540c\u65f6\uff0c\u5bb9\u5668\u7684\u80cc\u666f\u8272\u4e5f\u968f\u7740\u4e00\u8d77\u6539\u53d8\uff0c\u800c\u5bb9\u5668\u7684\u80cc\u666f\u8272\u5c31\u662f\u7f8e\u5973\u56fe\u7247\u7684\u4e3b\u8272\u3002<\/p>\n
\u622a\u4e2a\u56fe\u8ba9\u5927\u5bb6\u611f\u53d7\u4e0b\uff1a<\/p>\n
\"demo\u622a\u56fe\u67d0\u6548\u679c\"<\/p>\n
\u76f8\u5173JS\u4ee3\u7801\u4e3a\uff1a<\/p>\n
\n
$(\"#index a\").powerSwitch({\n    animation: \"translate\",\n    classAdd: \"active\",\n    onSwitch: function(target) {\n        RGBaster.colors<\/span>(target.find(\"img\").get(0), {\n          exclude: [ 'rgb(255,255,255)', 'rgb(0,0,0)' ],\n          success: function(payload) {\n            \/\/ \u5bb9\u5668\u7684\u80cc\u666f\u8272\u53d8\u6210\u56fe\u7247\u7684\u4e3b\u8272 - payload.dominant<\/span>\n            $(\"#box\").css(\"background-color\", payload.dominant);\n          }\n        });    \n    }    \n}).eq(0).trigger(\"click\");<\/pre>\n<\/div>\n
powerSwitch<\/code>\u4e3a\u81ea\u5df1\u7684\u4e07\u80fd\u5207\u6362\u63d2\u4ef6<\/a>\u4e2d\u7684\u65b9\u6cd5\uff0conSwitch<\/code>\u662fslide\u5207\u6362\u7684\u56de\u8c03\uff0c\u56de\u8c03\u6267\u884c\u7684\u5c31\u662frgbaster.js<\/code>\u7684RGBaster.colors<\/code>\u65b9\u6cd5\uff0c\u4e0d\u8003\u8651\u9ed1\u767d\u4e24\u8272\uff0c\u8ba9box<\/code>\u7684\u80cc\u666f\u8272\u53d8\u6210\u56fe\u7247\u7684\u4e3b\u8272\uff0c\u54c8\uff0c\u5f88\u7b80\u5355\u5427~<\/p>\n
\u56db\u3001rgbaster.js\u7684\u4f7f\u7528\u9650\u5236<\/h3>\n
1. \u6d4f\u89c8\u5668\u652f\u6301<\/strong>
\n\u7531\u4e8e\u4f7f\u7528Canvas\u7684getImageData<\/code>\u83b7\u5f97\u56fe\u7247\u989c\u8272\u4fe1\u606f\uff08\u6211\u4e4b\u524d\u7684box-shadow\u56fe\u7247\u751f\u6210\u5de5\u5177\u4e5f\u662f\u7528\u7684\u8fd9\u4e2a<\/a>\uff09, \u56e0\u6b64\uff0c\u9700\u8981IE9+\u6d4f\u89c8\u5668\u652f\u6301\uff1b\u540c\u65f6\uff0c\u4f7f\u7528\u4e86XMLHttpRequest2.0, \u8c8c\u4f3c\u8981IE10+\u53ef\u4ee5\u7545\u5feb\u4f7f\u7528\uff08\u636e\u8bf4IE8\/IE9\u53ef\u4ee5\u4f7f\u7528XDomainRequest<\/code>\u5bf9\u8c61\u5b9e\u73b0\u7c7b\u4f3c\u529f\u80fd\uff0c\u672a\u7814\u7a76\uff0c\u5177\u4f53\u4e0d\u8be6\uff09\uff1b<\/p>\n
2. \u8de8\u57df\u9650\u5236<\/strong>
\nXMLHttpRequest2.0\u83b7\u5f97\u56fe\u7247\u6570\u636e\uff0c\u672c\u5730\u6570\u636e\u81ea\u7136\u65e0\u969c\u788d\uff0c\u5bf9\u4e8e\u8de8\u57df\u7684\u6570\u636e\uff0c\u9700\u8981\u8bbe\u7f6e\u3002\u5b97\u65e8\u5c31\u662f\uff0c\u63a7\u5236Access-Control-Allow-Origin<\/code>\uff0c\u4f8b\u5982\uff0c\u4f60\u5e0c\u671b\u4f60\u7ad9\u70b9\u7684\u56fe\u7247\u53ea\u6709\u6211\u7ad9\u70b9\u53ef\u4ee5\u8bbf\u95ee\uff0c\u5219\u60f3\u529e\u6cd5\u901a\u8fc7\u8bbe\u7f6e\uff0c\u4f7f\u5f97\u8bf7\u6c42\u4fe1\u606f\u4e2d\u5305\u542b\uff1a<\/p>\n
\n
Access-Control-Allow-Origin: http:\/\/www.zhangxinxu.com<\/pre>\n<\/div>\n
\u5982\u679c\u662f\u6240\u6709\u7ad9\u70b9\uff0c\u5219\uff1a<\/p>\n
\n
Access-Control-Allow-Origin: *<\/pre>\n<\/div>\n
\u4e0d\u540c\u7684\u670d\u52a1\u5668\u8bbe\u7f6e\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u5927\u5bb6\u81ea\u884c\u767e\u4e4b\u8c37\u4e4b\u3002<\/p>\n
\u4e94\u3001\u6211\u60f3\u5199\u4e00\u7bc7\u957f\u7bc7\u5c0f\u8bf4<\/h3>\n
\/\/zxx: \u63a5\u5f00\u5934\u3002<\/span><\/p>\n
\u9762\u5411\u7684\u7fa4\u4f53\u662f\uff0c\u5e94\u8be5\u662f\u540c\u9f84\u4eba\u3002\u8d70\u641e\u7b11\u98ce\u683c\u8fd8\u662f\u4e25\u8083\u98ce\u683c\uff0c\u5e94\u8be5\u5e26\u6709\u641e\u7b11\uff0c\u4e3b\u65e8\u4f46\u9ad8\u5927\u4e0a\u3002\u6700\u597d\u5e26\u70b9\u70ed\u8840\u3002\u6069~~<\/p>\n
\u8fd8\u6709\u5c31\u662f\u2026\u2026\u2026\u2026\u2026\u2026\u54ce\u5440\u5440\uff0c\u597d\u50cf\u5f88\u96be\u7684\u6837\u5b50\u2026\u2026\u6309\u7167\u8fd9\u4e2a\u8282\u594f\uff0c\u4f30\u8ba1\u8fd8\u8981\u518d\u6784\u601d\u4e2a\u534a\u5e74~~<\/p>\n
\u5728\u6b64\u4e4b\u524d\uff0c\u8fd8\u662f\u591a\u76d8\u51fa\u70b9\u6280\u672f\u6587\u7ae0\u5427\u3002<\/p>\n
\u4ee5\u4e0a~~<\/p>\n
\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=4296<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u7684\u4e3b\u8981\u5185\u5bb9\u5c31\u662f\u56fe\u7247\u4e3b\u8272\u83b7\u53d6\u811a\u672crgbaster.js\u5c0f\u4ecb\u7ecd\u5c0f\u4f7f\u7528\uff0c\u6709demo\u6709\u622a\u56fe\u6709\u6e90\u4ee3\u7801\u5c55\u793a\uff0c\u4e0d\u77ed\u4e0d\u957f\uff0c\u6709\u5410\u69fd\uff0c\u4f46\u4e0d\u8fc7\u706b\u3002\u603b\u4e4b\uff0c\u5e0c\u671b\u672c\u6587\u7684\u5185\u5bb9\u80fd\u591f\u5bf9\u60a8\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[180],"tags":[53,888,337,935,875],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/4296"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=4296"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/4296\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=4296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=4296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=4296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}