add size support

ZhangBohan · Dec 15, 2017 · 6163e7a · 6163e7a
1 parent e7af31d
commit 6163e7a
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Showing 2 changed files with 14 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -4,6 +4,11 @@ ECharts图表接口，通过URL直接返回图像，方便发送邮件或机器
 
 ## API
 
+通用参数
+
+- width: 默认500px
+- height: 默认500px
+
 ### 自定义样式
 ```
 GET http://echarts.pipelinecraft.com/api?option={"title":{"text":"ECharts%20入门示例"},"tooltip":{},"legend":{"data":["销量"]},"xAxis":{"data":["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]},"yAxis":{},"series":[{"name":"销量","type":"bar","data":[5,20,36,10,10,20]}]}

diff --git a/app.js b/app.js
@@ -14,7 +14,9 @@ router.get('/api', async (ctx, next) => {
     console.log('query:', ctx.query);
     let option = JSON.parse(ctx.query.option)
     let buffer = await node_echarts({
-        option: option
+        option: option,
+        width: ctx.query.width || 500,
+        height: ctx.query.height || 500
     })
     ctx.type = 'image/png'
     ctx.body = buffer
@@ -46,7 +48,9 @@ router.get('/api/line', async (ctx, next) => {
     }
     ctx.type = 'image/png'
     ctx.body = await node_echarts({
-        option: option
+        option: option,
+        width: ctx.query.width || 500,
+        height: ctx.query.height || 500
     })
 })
 
@@ -84,7 +88,9 @@ router.get('/api/pie', async (ctx, next) => {
 
     ctx.type = 'image/png'
     ctx.body = await node_echarts({
-        option: option
+        option: option,
+        width: ctx.query.width || 500,
+        height: ctx.query.height || 500
     })
 })