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JavaScript有一个全屏API:dom.requestFullscreen(),尝试在一些场景中将Designer组件全屏化后,发现有一部分弹窗(选择颜色弹窗)不再出现,这是为什么呢?
首先打开一个Designer组件,观察下颜色选择器的dom结构:
发现其与Designer的dom节点gc-designer-container
同在body下,并不是 包含关系。
对话框被设计为附加到 document body 而不是 Designer 的 host(gc-designer-container)。所以,如果仅仅是让 Designer 的 host 全屏显示,它就会覆盖主体中的所有其他元素包括对话框。
那么此时如果将 Designer的dom节点gc-designer-container
全屏,就会发现颜色选择器将不出现在屏幕中,当退出全屏模式后,发现可以正常显示。
document.getElementById("gc-designer-container").requestFullscreen();
为此,解决方案是需要将弹窗的dom放置在全屏dom容器内。
这里有两个思路,一个是将 Designer 的dom节点、颜色选择器的dom节点,这两个节点的共同父节点全屏,即将body元素全屏;
第二个思路是将 Designer 组件放置在 iframe 容器中,下面分别对这两种方案进行介绍:
方案一:
<body unselectable="on" id="wrap">
<button id="btn" onclick="btn()">全屏</button>
<div id="gc-designer-container">
</div>
<script type="text/javascript">
var designer
window.onload = function () {
designer = new GC.Spread.Sheets.Designer.Designer("gc-designer-container");
var spread = designer.getWorkbook();
var sheet = spread.getActiveSheet();
var cstyle = sheet.getDefaultStyle();
cstyle.themeFont = null;
cstyle.font = "24px Meiryo";
sheet.setDefaultStyle(cstyle);
}
function btn() {
document.getElementById("wrap").requestFullscreen();
setTimeout(() => {
const canvas = document.getElementById('gc-designer-container');
if (document.fullscreenElement) {
console.log(111)
canvas.style.height = window.screen.height + 'px';
canvas.style.width = window.screen.width + 'px';
} else {
console.log(222)
canvas.style.height = '800px';
canvas.style.width = '80%';
}
}, 100)
}
</script>
</body>
方案二:
<body unselectable="on" id="wrap">
<button id="btn" onclick="btn()">全屏</button>
<iframe id="iframe-one" width="100%" height="100%" scrolling="no" src="./index.html"></iframe>
<script type="text/javascript">
function btn() {
let iframe = document.getElementById("iframe-one");
iframe.requestFullscreen();
}
</script>
</body>
在body中创建iframe元素,然后索引指向包含Designer组件的index.html ,然后对iframe元素全屏。
接下来是index.html:
<body>
<div id="gc-designer-container"></div>
<script type="text/javascript">
window.onload = function () {
var canvas = document.getElementById("gc-designer-container");
canvas.style.height = window.screen.height + 'px';
designer = new GC.Spread.Sheets.Designer.Designer("gc-designer-container");
var spread = designer.getWorkbook();
var sheet = spread.getActiveSheet();
}
</script>
</body>
在index.html中完成了 Designer 初始化工作,并且重新设置了高度。
Demo请参考附件。
作者: Ellia.Duan | 审核:Lynn.Dou | 更新时间:2023.12.22