add dark theme var

@ve-table-body-row-row-scrolling-background-color

Author: huangshuwei

packages/style/ve-table.less

@@ -133,10 +133,18 @@
                     }
                 }
 
+                // 展开行
                 tr.ve-table-expand-tr {
                     display: table-row;
                 }
 
+                // 滚动中效果
+                tr.ve-table-body-row-scrolling {
+                    & > td {
+                        background-color: @ve-table-body-row-row-scrolling-background-color;
+                    }
+                }
+
                 // 斑马纹
                 &.ve-table-stripe {
                     tr.ve-table-body-tr:nth-child(2n + 1) td {
@@ -161,6 +169,7 @@
                         }
                     }
                 }
+
                 .ve-table-body-tr {
                     .ve-table-body-td {
                         // 固定左列、右列

packages/theme-dark/var.less

@@ -20,6 +20,7 @@
 @ve-table-body-row-stripe-background-color: @ve-primary-color;
 @ve-table-body-row-hover-background-color: @ve-primary-color;
 @ve-table-body-row-highlight-background-color: #000;
+@ve-table-body-row-row-scrolling-background-color: #141414;
 @ve-table-header-background-color: #1d1d1d;
 @ve-table-head-text-color: @ve-dark-text-color;
 @ve-table-body-text-color: @ve-dark-text-color;

packages/theme-default/var.less

@@ -19,6 +19,7 @@
 @ve-table-body-row-stripe-background-color: #fafafa;
 @ve-table-body-row-hover-background-color: #f5f7fa;
 @ve-table-body-row-highlight-background-color: #e0f3ff;
+@ve-table-body-row-row-scrolling-background-color: #fff;
 @ve-table-header-background-color: #fafafa;
 @ve-table-head-text-color: @ve-default-text-color;
 @ve-table-body-text-color: @ve-default-text-color;

packages/ve-table/src/body/body-tr-scrolling.jsx

@@ -15,6 +15,7 @@ export default {
 
             result = {
                 [clsName("body-tr")]: true,
+                [clsName("body-row-scrolling")]: true,
             };
 
             return result;

tests/unit/specs/__snapshots__/ve-table-virtual-scroll.spec.js.snap

@@ -103,7 +103,7 @@ exports[`veTable virtual scroll render same row height 1`] = `
 `;
 
 exports[`veTable virtual scroll virtual scroll palceholder 1`] = `
-<tr class="ve-table-body-tr">
+<tr class="ve-table-body-tr ve-table-body-row-scrolling">
   <td colspan="1"></td>
 </tr>
 `;