我正在尝试创建一个动画,该动画采用页面上任何位置的图像并将其移动到中间,同时将其大小调整为浏览器窗口的全宽。我的解决方案有效,但有一些口吃/跳跃,我无法真正解释。有没有人已经尝试过创建类似的动画?编辑:我注意到口吃问题似乎只出现在 macOS Safari 中。在其他浏览器中,此动画似乎运行得非常流畅。
这是我的js代码:
function getWindowWidth() {
return document.documentElement.clientWidth
}
function getWindowHeight() {
return document.documentElement.clientHeight;
}
//at the moment this is hacky and only supports one image to be enlarged
let en_img_left = null;
let en_img_top = null;
function enlargeImage(img) {
let boundingClientRect = img.getBoundingClientRect();
img.style.position = "fixed";
en_img_top = boundingClientRect.y + "px";
img.style.top = en_img_top;
en_img_left = boundingClientRect.x + "px";
img.style.left = en_img_left;
img.style.width = boundingClientRect.width + "px";
img.style.zIndex = "1000";
setTimeout(function() {
img.style.transition = "1s ease-in-out";
setTimeout(function() {
let scaleFactor = getWindowWidth() / boundingClientRect.width;
img.style.transform = "scale(" + scaleFactor + ")";
img.style.left = getWindowWidth() / 2 - (boundingClientRect.width / 2) + "px";
img.style.top = getWindowHeight() / 2 - boundingClientRect.height / 2 + "px";
}, 1);
}, 1);
return img;
}
function delargeImage(img) { //sorry for the function name
img.style.transition = "1s ease-in-out";
setTimeout(function() {
img.style.transform = "scale(1)";
img.style.left = en_img_left;
img.style.top = en_img_top;
}, 1);
return img;
}
示例 HTML+CSS 代码,但它可以是网站上带有 ID 的任何图像:
HTML:
<div class="container">
<img id="example" style="width: 100%" src="https://images.pexels.com/photos/1361815/pexels-photo-1361815.jpeg?cs=srgb&dl=blur-bokeh-close-up-1361815.jpg&fm=jpg">
</div>
CSS:
.container {
width: 200px;
}
我还制作了一个 jsfiddle,很好地显示了口吃问题: https ://jsfiddle.net/robske_110/vhz5Ln4o/11/