[{"id":"b66f8b1e-cc14-4e89-9679-abd5687d283d","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"569bb90a-ea68-46c6-96f1-ab151c120714","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"5eb52f08-2d1a-4362-9ffc-4871bdc10f3f","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"341dd607-b97d-4d70-bde2-53acda6b6c95","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"05349273-414f-4208-9ea2-c4fc8f4ea2cb","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"86089f76-b778-4d52-821e-6f27de3df613","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"b81e4fd6-1fc5-43a0-a258-b6e16a5cbec6","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"8aa8ce31-43e4-438e-951f-241608435260","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"37343f41-6ec2-4c7e-b21d-2cc18d5ce1e0","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"5915e52f-64f8-4146-b8bd-81bead6324a3","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"836ba889-af9e-460d-a4cc-c24d922795f2","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"4ae14b06-bb68-4394-a210-a46b8f028346","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"d8f42066-e9dc-4411-bdcf-43b1a203370c","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"7ef86f16-b1a0-49f7-9592-612b9be02b25","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"b29c7775-a9a4-451e-a1b5-01d19ed5ca5e","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"e56f3989-8f81-46af-90fa-a4813eeb976f","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"2526c963-f170-45a8-923e-91b0712a9810","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"24575cf0-501a-44f9-8426-c40f8f4b5552","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"1a6f8d7f-acd6-42be-8c4f-f464c6218381","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"82b176fd-5cab-498c-909e-8fa7d29c38d8","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"1708b3a9-4f37-44a8-8f0e-f9a2d2e5d940","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"c9ac246e-29fb-4bc4-8231-8439795bb590","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"94f2a5c3-2539-436a-af75-23fbbd1a3957","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"d99594f4-2d40-4df4-9419-ba2ca6aa3f7f","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"fd66e72d-0f10-4f57-9807-6db26290ab2e","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"8f344863-503d-4bc3-a594-3815e7d55f5c","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"9be82601-de9d-4c18-948a-23ab6f4dd431","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"6495f3c0-b463-47e0-b08a-ca949672211e","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"b4bede08-3f08-4839-ba4a-abc7ac195bde","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"4afcdfc0-3ff5-4f2b-a223-f8fc042a5bbe","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"422062c4-fa40-4771-a86f-008efe6d86e5","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"d87e8013-86a7-4840-8d25-6f62e14eb4ac","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"a6acedfd-4043-4c64-a5d1-aec3326df9e7","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"dbdc0b24-06c4-48b9-8d6c-7455119dc773","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"a3856849-954a-4cfc-96a6-382e530d3638","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"4a39306b-ffa5-433d-80a3-28e41f929b72","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]}]
SpreadJS的自定义单元格有着强大的自定义特性。有小伙伴想要将已有的图标绘制在单元格上,但是发现绘制的图标没有显示。这是因为图片的加载是异步的。
这边提供一个简单的Demo如下:
var img = undefined;
function ImageCellType() {}
ImageCellType.prototype = new GC.Spread.Sheets.CellTypes.Text();
ImageCellType.prototype.paint = function (
ctx,
value,
x,
y,
width,
height,
style,
context
) {
spreadNS.CellTypes.RowHeader.prototype.paint.apply(this, arguments);
if (img) {
ctx.save();
ctx.beginPath();
ctx.moveTo(x, y);
ctx.drawImage(img, x + 90, y, 20, 20);
ctx.restore();
return;
} //创建新的图片对象
img = new Image(); //指定图片的URL
img.src = "2.png"; //浏览器加载图片完毕后再绘制图片
img.onload = function () {
context.sheet.repaint();
};
};
显示效果如下:
在代码中,我们先定义了一个img的变量,然后为了让这个单元格可以编辑,我们继承了text。
里面的if语句判断是都有img,有则进入绘制,在drawImage中的参数分别为图标、X轴距离、Y轴距离,以及宽高。
另外,需要注意的是第二个参数可以加上变量的这样可以以防在不同的页面大小下,出现绘制位置不一致的情况。
最后在图片加载完成后,调用repaint方法,将图标绘制。