html - Flex 元素获取我们的 flex 容器(水平)

Question

我正在构建一个面板，其中我有一个带有一些命令按钮的右侧菜单区域，垂直滚动，以及一个覆盖剩余空间的主要左侧区域，水平滚动。

修复元素必须完全可用的高度(最多 100% 的视口(viewport))。

在示例代码中，左侧区域的 flex 元素是“插入”右侧移动到右侧...我也没有让滚动条正确显示。

在我要查找的结果下方:

这是我的模板代码:

.panel-container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: row;
  padding: 0px;
}

.panel-container-left {
  flex-grow: 1;
  flex-shrink: 0;
  background-color: grey;
  display: flex;
  flex-direction: column;
}

.panel-container-right {
  margin-left: 3px;
  background-color: green;
}

.panel-right-data {
  display: flex;
  flex-direction: column;
  overflow-y: scroll;
}

.panel-right-data-item {
  background-color: green;
  color: white;
  padding: 5px;
  margin: 2px;
  width: 20px;
}
.panel-left-data {
  display: flex;
  flex-direction: row;
  overflow-x: scroll;
}

.panel-left-data-item {
  background-color: blue;
  color: white;
  padding: 5px;
  margin: 2px;
  width: 80px;
  height: 100%;
}

<div class="panel-container">
  <div class="panel-container-left">
    <div>LEFT AREA</div>
    <div class="panel-left-data">
      <div class="panel-left-data-item">
        ITEM 1
      </div>
      <div class="panel-left-data-item">
        ITEM 2
      </div>
      <div class="panel-left-data-item">
        ITEM 3
      </div>
      <div class="panel-left-data-item">
        ITEM 4
      </div>
      <div class="panel-left-data-item">
        ITEM 5
      </div>
    </div>
  </div>
  <div class="panel-container-right">
    <div>RIGHT AREA</div>
    <div class="panel-right-data">
      <div class="panel-right-data-item">
        COMMAND 1
      </div>
      <div class="panel-right-data-item">
        COMMAND 2
      </div>
      <div class="panel-right-data-item">
        COMMAND 3
      </div>
      <div class="panel-right-data-item">
        COMMAND 4
      </div>
      <div class="panel-right-data-item">
        COMMAND 5
      </div>
      <div class="panel-right-data-item">
        COMMAND 6
      </div>
      <div class="panel-right-data-item">
        COMMAND 7
      </div>
      <div class="panel-right-data-item">
        COMMAND 8
      </div>
      <div class="panel-right-data-item">
        COMMAND 9
      </div>
    </div>
  </div>
</div>

Answer 1

对于高度: height: 100%; 仅在定义了直接父级高度时有效。所以你必须向 .panel-left-data 添加一个特定的高度大小，它可以是 100% 但反过来你必须向它的父节点 .panel-container 添加一个特定的高度-left，它也可以是 100%，因为 .panel-container 确实定义了高度 (100vh)，一切都很好!

剩下的，我直接评论了我所做的一些调整，其中一些可能有更好的解决方案，但它有效。

在实践中:

.panel-container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: row;
  padding: 0px;
}

.panel-container-left {
  flex-grow: 1;
  flex-shrink: 0;
  background-color: grey;
  display: flex;
  flex-direction: column;
  height: 100%; /*added a height*/
  overflow-x: scroll; /*moved the scroll here*/
  overflow-y:hidden; /*just to be sure*/
}

.panel-container-right {
  margin-left: 3px;
  background-color: green;
  position:absolute; /*added a position absolute*/
  right:0px; /*the position let me use the right/left/top/bottom positionning*/
  z-index:10; /*let me put this element on top of those with lower z-index*/
  width:200px; /*and a width to make it good-looking*/
  /*moved the scroll here with some height to restrict it*/
  height: calc( 100% - 17px );
  overflow-y:scroll;
}

.panel-right-data {
  display: flex;
  flex-direction: column;
  /*overflow-y: scroll; moved on the parent element*/
}

.panel-right-data-item {
  background-color: green;
  color: white;
  padding: 5px;
  margin: 2px;
  width: 20px;
}
.panel-left-data {
  display: flex;
  flex-direction: row;
  /*overflow-x: scroll; moved on the parent element*/
  height: calc( 100% - 40px ); /*added a height, cut it a little to account for the scrollbar and your example*/
}

.panel-left-data-item {
  background-color: blue;
  color: white;
  padding: 5px;
  margin: 2px;
  width: 80px;
  height: 100%;
}

<div class="panel-container">
  <div class="panel-container-left">
    <div>LEFT AREA</div>
    <div class="panel-left-data">
      <div class="panel-left-data-item">
        ITEM 1
      </div>
      <div class="panel-left-data-item">
        ITEM 2
      </div>
      <div class="panel-left-data-item">
        ITEM 3
      </div>
      <div class="panel-left-data-item">
        ITEM 4
      </div>
      <div class="panel-left-data-item">
        ITEM 5
      </div>
    </div>
  </div>
  <div class="panel-container-right">
    <div>RIGHT AREA</div>
    <div class="panel-right-data">
      <div class="panel-right-data-item">
        COMMAND 1
      </div>
      <div class="panel-right-data-item">
        COMMAND 2
      </div>
      <div class="panel-right-data-item">
        COMMAND 3
      </div>
      <div class="panel-right-data-item">
        COMMAND 4
      </div>
      <div class="panel-right-data-item">
        COMMAND 5
      </div>
      <div class="panel-right-data-item">
        COMMAND 6
      </div>
      <div class="panel-right-data-item">
        COMMAND 7
      </div>
      <div class="panel-right-data-item">
        COMMAND 8
      </div>
      <div class="panel-right-data-item">
        COMMAND 9
      </div>
    </div>
  </div>
</div>