Merge pull request #1023 from QingWei-Li/step/align-center

Step: add align-center, fixed #994

examples/docs/en-US/steps.md

@@ -120,6 +120,7 @@ Vertical step bars.
 | active | Sets the current activation step  | number | — | 0 |
 | process-status | Sets the status of current step | string | wait/process/finish/error/success | process |
 | finish-status | Sets the status of end step | string | wait/process/finish/error/success | finish |
+| align-center | align center | boolean | false, true | false |
 
 ### Step Attributes
 | Attribute      | Description    | Type      | Options       | Default   |

examples/docs/zh-CN/steps.md

@@ -113,6 +113,7 @@
 | active | 设置当前激活步骤  | number | — | 0 |
 | process-status | 设置当前步骤的状态 | string | wait/process/finish/error/success | process |
 | finish-status | 设置结束步骤的状态 | string | wait/process/finish/error/success | finish |
+| align-center | 标题描述居中对齐 | boolean | false, true | false |
 
 ### Step Attributes
 | 参数      | 说明    | 类型      | 可选值       | 默认值   |

packages/steps/src/step.vue

@@ -114,7 +114,9 @@ export default {
 
     if (parent.direction === 'horizontal') {
       this.style = { width: space };
-      // this.mainOffset = -this.$refs.title.getBoundingClientRect().width / 2 + 16 + 'px';
+      if (parent.alignCenter) {
+        this.mainOffset = -this.$refs.title.getBoundingClientRect().width / 2 + 16 + 'px';
+      }
     } else {
       if (parent.steps[parent.steps.length - 1] !== this) {
         this.style = { height: space };

packages/steps/src/steps.vue

@@ -13,6 +13,7 @@ export default {
       type: String,
       default: 'horizontal'
     },
+    alignCenter: Boolean,
     finishStatus: {
       type: String,
       default: 'finish'