I want my app to have no title bar but still be closeable, draggable, minimizable, maximizable, and resizable like a regular window. I can do this in OS X since there is a [titleBarStyle] 1 option called hidden-inset that I can use but unfortunately, it's not available for Windows, which is the platform that I'm developing for. How would I go about doing something like this in Windows?
Above is an example of what I'm talking about.
Assuming you don't want window chrome, you can accomplish this by removing the frame around Electron and filling the rest in with html/css/js. I wrote an article that achieves what you are looking for on my blog here: http://mylifeforthecode.github.io/making-the-electron-shell-as-pretty-as-the-visual-studio-shell/. Code to get you started is also hosted here: https://github.com/srakowski/ElectronLikeVS
To summarize, you need to pass frame: false when you create the BrowserWindow:
mainWindow = new BrowserWindow({width: 800, height: 600, frame: false});
Then create and add control buttons for your title bar:
<div id="title-bar">
<div id="title">My Life For The Code</div>
<div id="title-bar-btns">
<button id="min-btn">-</button>
<button id="max-btn">+</button>
<button id="close-btn">x</button>
</div>
</div>
Bind in the max/min/close functions in js:
(function () {
var remote = require('remote');
var BrowserWindow = remote.require('browser-window');
function init() {
document.getElementById("min-btn").addEventListener("click", function (e) {
var window = BrowserWindow.getFocusedWindow();
window.minimize();
});
document.getElementById("max-btn").addEventListener("click", function (e) {
var window = BrowserWindow.getFocusedWindow();
window.maximize();
});
document.getElementById("close-btn").addEventListener("click", function (e) {
var window = BrowserWindow.getFocusedWindow();
window.close();
});
};
document.onreadystatechange = function () {
if (document.readyState == "complete") {
init();
}
};
})();
Styling the window can be tricky, but the key use to use special properties from webkit. Here is some minimal CSS:
body {
padding: 0px;
margin: 0px;
}
#title-bar {
-webkit-app-region: drag;
height: 24px;
background-color: darkviolet;
padding: none;
margin: 0px;
}
#title {
position: fixed;
top: 0px;
left: 6px;
}
#title-bar-btns {
-webkit-app-region: no-drag;
position: fixed;
top: 0px;
right: 6px;
}
Note that these are important:
-webkit-app-region: drag;
-webkit-app-region: no-drag;
-webkit-app-region: drag on your 'title bar' region will make it so that you can drag it around as is common with windows. The no-drag is applied to the buttons so that they do not cause dragging.
I was inspired by Shawn's article and apps like Hyper Terminal to figure out how to exactly replicate the Windows 10 style look as a seamless title bar, and wrote this tutorial (please note: as of 2022 this tutorial is somewhat outdated in terms of Electron).
It includes a fix for the resizing issue Shawn mentioned, and also switches between the maximise and restore buttons, even when e.g. the window is maximised by dragging the it to the top of the screen.
Quick reference
Title bar height: 32px
Title bar title font-size: 12px
Window control buttons: 46px wide, 32px high
Window control button assets from font Segoe MDL2 Assets (docs here), size: 10px
Minimise:
Maximise:
Restore:
Close:
Window control button colours: varies between UWP apps, but seems to be
Dark mode apps (white window controls): #FFF
Light mode apps (black window controls): #171717
Close button colours
Hover (:hover): background #E81123, colour #FFF
Pressed (:active): background #F1707A, colour #000 or #171717
Note: in the tutorial I have switched to PNG icons with different sizes for pixel-perfect scaling, but I leave the Segoe MDL2 Assets font characters above as an alternative
I use this in my apps:
const { remote } = require("electron");
var win = remote.BrowserWindow.getFocusedWindow();
var title = document.querySelector("title").innerHTML;
document.querySelector("#titleshown").innerHTML = title;
var minimize = document.querySelector("#minimize");
var maximize = document.querySelector("#maximize");
var quit = document.querySelector("#quit");
minimize.addEventListener("click", () => {
win.minimize();
});
maximize.addEventListener("click", () => {
win.setFullScreen(!win.isFullScreen());
});
quit.addEventListener("click", () => {
win.close();
});
nav {
display: block;
width: 100%;
height: 30px;
background-color: #333333;
-webkit-app-region: drag;
-webkit-user-select: none;
position: fixed;
z-index: 1;
}
nav #titleshown {
width: 30%;
height: 100%;
line-height: 30px;
color: #f7f7f7;
float: left;
padding: 0 0 0 1em;
}
nav #buttons {
float: right;
width: 150px;
height: 100%;
line-height: 30px;
background-color: #222222;
-webkit-app-region: no-drag;
}
nav #buttons #minimize,
nav #buttons #maximize,
nav #buttons #quit {
float: left;
height: 100%;
width: 33%;
text-align: center;
color: #f7f7f7;
cursor: default;
}
nav #buttons #minimize:hover {
background-color: #333333aa;
}
nav #buttons #maximize:hover {
background-color: #333333aa;
}
nav #buttons #quit:hover {
background-color: #ff0000dd;
}
main {
padding-top: 30px;
overflow: auto;
height: calc(100vh - 30px);
position: absolute;
top: 30px;
left: 0;
padding: 0;
width: 100%;
}
<html>
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<body>
<nav>
<div id="titleshown"></div>
<div id="buttons">
<div id="minimize"><span>‐</span></div>
<div id="maximize"><span>□</span></div>
<div id="quit"><span>×</span></div>
</div>
</nav>
<main>
<div class="container">
<h1>Hello World!</h1>
</div>
</main>
</body>
</html>
Ran into this problem and my solution was to keep the frame but set the title to blank i.e.
document.querySelector("title").innerHTML ="";
That solved my problem i.e. I got a window which can be closed, maximized or minimized without a title on it.
I'm trying to show a gif during an Ajax call; it works fine if the div is at the body level but won't appear in a tab panel. I've tried putting the div at the tab-pane, container, row and column levels but it won't show.
Simple html:
<div id="loading">
<img id="loading-image" src="images/page-loader.gif" alt="waiting..." />
</div>
jquery:
$('#loading').hide(); $('#loading').show(); // as required
css:
#loading {
width: 100%;
height: 100%;
top: 0px;
left: 0px;
position: fixed;
display: block;
opacity: 0.7;
background-color: #fff;
z-index: 99;
text-align: center;
}
#loading-image {
position: absolute;
top: 10px;
left: 24px;
z-index: 100;
}
Try this:
$(document).ajaxStart(function() {
$('<div id="loading"><img id="loading-image" src="images/page-loader.gif" alt="waiting..." /></img></div>')
.prependTo('.tabClass'); });
$(document).ajaxStop(function() {
$('#loading').remove();
});
replacing 'tabClass' with the class of whatever container you want the gif animation to attach to.
I've found this solution to be cleaner & work well.
I would like to achieve the effect where one image is revealed over the other when scrolling the page.
You can see an example on livearealabs.com (new york / seattle). Does anybody know how to create it using CSS3?
Check out this jsfiddle to create the sliding effect.
The trick is to have one div rotated 60 degrees. You position it so that it covers the entire wrapper and the overflow is hidden. Then with javascript you just have to move the slice container either by changing the left property or by changing the translate-X property.
Here is the code:
HTML:
<div class="wrapper">
<div class="bg"></div>
<div class="slice" data-show="true"></div>
</div>
CSS:
.wrapper {
position: relative;
overflow: hidden;
width: 20em;
height: 10em;
}
.bg {
background-color: red;
width: 100%;
height: 100%;
}
.slice {
position: absolute;
top: -12em;
left: -8em;
width: 30em;
height: 30em;
background-color: blue;
-webkit-transform: rotate(-60deg);
}
JS:
var hidden = false;
$('.wrapper').click(function() {
console.log('click');
if (hidden) {
$('.slice').stop().animate({left: '-8em'}, 2000);
hidden = false;
} else {
$('.slice').stop().animate({left: '-34em'}, 2000);
hidden = true;
}
console.log('click end');
});
Also check out this jsfiddle for a similar sliding effect that can be achieved with CSS only.
I have a function that dynamically creates links for a photo gallery. The function also produces a larger image as a background image of a div when and thumbnail is clicked on. What I want to do is have a third event, where if the user clicks the enlarged image in the div, the jQuery Fancybox loads an even bigger version of the image being displayed in the div. The problem is that the link for the anchor tag I'm using is created dynamically, and I know that Fancybox parses the HTML when the DOM is ready...unfortunately my function changes the DOM by appending the anchor tag for the full sized image. The help I need is using the Fancybox's options to specify the href attribute for the plugin. I'm sorry that was so long-winded...here's the code.
jQuery:
function gallery(picid, picnum){
var ext = 'jpg';
var fullSize = 'imgs/'+picid+'_full.'+ext;
$('#photolarge').css("background", 'url(imgs/'+picid+'_large.'+ext+') no-repeat');
$('#photolarge a').attr(
{ href: fullSize
//rel: 'lightbox',
}
);
$("#lightboxlink").click(function(){
$('#lightboxlink').fancybox({
'autoDimensions' : false,
'width' : 'auto',
'height' : 'auto',
'href' : fullSize
});
});
return false;
}
HTML Snippet
<div id="photolarge">
<a id="lightboxlink" href="#"></a>
</div>
<div id="phototable">
<ul id="photorow1">
<li><a onclick="gallery('bigsun',1)"><img id="sun" src="imgs/bigsun.jpg" /></a></li>
</ul>
</div>
CSS:
#photolarge {
width: 590px;
height: 400px;
margin-left: 7px;
border: 2px solid;
background: none;}
#phototable {
width: 590px;
height: 300px;
border: 2px solid;
margin: 10px 0 0 7px;}
#phototable img {
cursor: pointer;}
#phototable ul {
list-style: none;
display: inline;}
#phototable li {
padding-left: 10px;}
#lightboxlink {
display: block;
height: 100%;
width: 100%;}
Any help would be greatly appreciated!!!
Try this and see if it works,this is just fancy box bit though,the rest of your code seems fine
$("#lightboxlink").live('click', function(){
$.fancybox({
'autoDimensions' : false,
'width' : 'auto',
'height' : 'auto',
'href' : $(this).attr('href')
});
return false;
});
I need to make this image stretch to the maximum size possible without overflowing it's <div> or skewing the image.
I can't predict the aspect-ratio of the image, so there's no way to know whether to use:
<img src="url" style="width: 100%;">
or
<img src="url" style="height: 100%;">
I can't use both (i.e. style="width: 100%; height: 100%;") because that will stretch the image to fit the <div>.
The <div> has a size set by percentage of the screen, which is also unpredictable.
Update 2016:
Modern browser behave much better. All you should need to do is to set the image width to 100% (demo)
.container img {
width: 100%;
}
Since you don't know the aspect ratio, you'll have to use some scripting. Here is how I would do it with jQuery (demo):
CSS
.container {
width: 40%;
height: 40%;
background: #444;
margin: 0 auto;
}
.container img.wide {
max-width: 100%;
max-height: 100%;
height: auto;
}
.container img.tall {
max-height: 100%;
max-width: 100%;
width: auto;
}
HTML
<div class="container">
<img src="http://i48.tinypic.com/wrltuc.jpg" />
</div>
<br />
<br />
<div class="container">
<img src="http://i47.tinypic.com/i1bek8.jpg" />
</div>
Script
$(window).load(function(){
$('.container').find('img').each(function(){
var imgClass = (this.width/this.height > 1) ? 'wide' : 'tall';
$(this).addClass(imgClass);
})
})
There is a much easier way to do this using only CSS and HTML:
HTML:
<div
class="fill"
style="background-image: url('path/to/image.jpg');">
</div>
CSS:
.fill {
background-size: cover;
background-position: center;
width: 100%;
height: 100%;
}
This will place your image as the background, and stretch it to fit the div size without distortion.
Not a perfect solution, but this CSS might help. The zoom is what makes this code work, and the factor should theoretically be infinite to work ideally for small images - but 2, 4, or 8 works fine in most cases.
#myImage {
zoom: 2; //increase if you have very small images
display: block;
margin: auto;
height: auto;
max-height: 100%;
width: auto;
max-width: 100%;
}
If you're able to set the image as a background-image then you can do something like this, which will crop the image without stretching it:
<div style="background-image: url(...); background-size: cover; width: 100%; height: 100%;"></div>
If you need to stick with an <img> tag, then as of 2019, you can now use the object-fit css property that accepts the following values:
fill | contain | cover | none | scale-down
See https://developer.mozilla.org/en-US/docs/Web/CSS/object-fit
As an example, you could have a container that holds an image:
<div class="container">
<img src="" class="container_img" />
</div>
.container {
height: 50px;
width: 50%;
}
.container_img {
height: 100%;
width: 100%;
object-fit: cover;
}
If you can, use background images and set background-size: cover. This will make the background cover the whole element.
CSS
div {
background-image: url(path/to/your/image.png);
background-repeat: no-repeat;
background-position: 50% 50%;
background-size: cover;
}
If you're stuck with using inline images there are a few options. First, there is
object-fit
This property acts on images, videos and other objects similar to background-size: cover.
CSS
img {
object-fit: cover;
}
Sadly, browser support is not that great with IE up to version 11 not supporting it at all. The next option uses jQuery
CSS + jQuery
HTML
<div>
<img src="image.png" class="cover-image">
</div>
CSS
div {
height: 8em;
width: 15em;
}
Custom jQuery plugin
(function ($) {
$.fn.coverImage = function(contain) {
this.each(function() {
var $this = $(this),
src = $this.get(0).src,
$wrapper = $this.parent();
if (contain) {
$wrapper.css({
'background': 'url(' + src + ') 50% 50%/contain no-repeat'
});
} else {
$wrapper.css({
'background': 'url(' + src + ') 50% 50%/cover no-repeat'
});
}
$this.remove();
});
return this;
};
})(jQuery);
Use the plugin like this
jQuery('.cover-image').coverImage();
It will take an image, set it as a background image on the image's wrapper element and remove the img tag from the document. Lastly you could use
Pure CSS
You might use this as a fallback. The image will scale up to cover it's container but it won't scale down.
CSS
div {
height: 8em;
width: 15em;
overflow: hidden;
}
div img {
min-height: 100%;
min-width: 100%;
width: auto;
height: auto;
max-width: none;
max-height: none;
display: block;
position: relative;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
Hope this might help somebody, happy coding!
Thanks to CSS3
img
{
object-fit: contain;
}
https://developer.mozilla.org/en-US/docs/Web/CSS/object-fit
IE and EDGE as always outsiders:
http://caniuse.com/#feat=object-fit
That's impossible with just HTML and CSS, or at least wildly exotic and complicated. If you're willing to throw some javascript in, here's a solution using jQuery:
$(function() {
$(window).resize(function() {
var $i = $('img#image_to_resize');
var $c = $img.parent();
var i_ar = $i.width() / $i.height(), c_ar = $c.width() / $c.height();
$i.width(i_ar > c_ar ? $c.width() : $c.height() * (i_ar));
});
$(window).resize();
});
That will resize the image so that it will always fit inside the parent element, regardless of it's size. And as it's binded to the $(window).resize() event, when user resizes the window, the image will adjust.
This does not try to center the image in the container, that would be possible but I guess that's not what you're after.
You can use object-fit: cover; on the parent div.
https://css-tricks.com/almanac/properties/o/object-fit/
Set width and height of the outer container div. Then use below styling on img:
.container img{
width:100%;
height:auto;
max-height:100%;
}
This will help you to keep an aspect ratio of your img
If you want to set a max width or height (so that it will not be very large) while keeping the images aspect-ratio, you can do this:
img{
object-fit: contain;
max-height: 70px;
}
I came across this question searching for a simular problem. I'm making a webpage with responsive design and the width of elements placed on the page is set to a percent of the screen width. The height is set with a vw value.
Since I'm adding posts with PHP and a database backend, pure CSS was out of the question. I did however find the jQuery/javascript solution a bit troblesome, so I came up with a neat (so I think myself at least) solution.
HTML (or php)
div.imgfill {
float: left;
position: relative;
background-repeat: no-repeat;
background-position: 50% 50%;
background-size: cover;
width: 33.333%;
height: 18vw;
border: 1px solid black; /*frame of the image*/
margin: -1px;
}
<div class="imgfill" style="background-image:url(source/image.jpg);">
This might be some info
</div>
<div class="imgfill" style="background-image:url(source/image2.jpg);">
This might be some info
</div>
<div class="imgfill" style="background-image:url(source/image3.jpg);">
This might be some info
</div>
By using style="" it's posible to have PHP update my page dynamically and the CSS-styling together with style="" will end up in a perfectly covered image, scaled to cover the dynamic div-tag.
To make this image stretch to the maximum size possible without overflowing it's or skewing the image.
Apply...
img {
object-fit: cover;
height: -webkit-fill-available;
}
styles to the image.
Using this method you can fill in your div with the image varying ratio of divs and images.
jQuery:
$(window).load(function(){
$('body').find(.fillme).each(function(){
var fillmeval = $(this).width()/$(this).height();
var imgval = $this.children('img').width()/$this.children('img').height();
var imgClass;
if(imgval > fillmeval){
imgClass = "stretchy";
}else{
imgClass = "stretchx";
}
$(this).children('img').addClass(imgClass);
});
});
HTML:
<div class="fillme">
<img src="../images/myimg.jpg" />
</div>
CSS:
.fillme{
overflow:hidden;
}
.fillme img.stretchx{
height:auto;
width:100%;
}
.fillme img.stretchy{
height:100%;
width:auto;
}
This did the trick for me
div img {
width: 100%;
min-height: 500px;
width: 100vw;
height: 100vh;
object-fit: cover;
}
if you working with IMG tag, it's easy.
I made this:
<style>
#pic{
height: 400px;
width: 400px;
}
#pic img{
height: 225px;
position: relative;
margin: 0 auto;
}
</style>
<div id="pic"><img src="images/menu.png"></div>
$(document).ready(function(){
$('#pic img').attr({ 'style':'height:25%; display:none; left:100px; top:100px;' })
)}
but i didn't find how to make it work with #pic { background:url(img/menu.png)}
Enyone?
Thanks
I had similar issue. I resolved it with just CSS.
Basically Object-fit: cover helps you achieve the task of maintaining the aspect ratio while positioning an image inside a div.
But the problem was Object-fit: cover was not working in IE and it was taking 100% width and 100% height and aspect ratio was distorted. In other words image zooming effect wasn't there which I was seeing in chrome.
The approach I took was to position the image inside the container with absolute and then place it right at the centre using the combination:
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
Once it is in the centre, I give to the image,
// For vertical blocks (i.e., where height is greater than width)
height: 100%;
width: auto;
// For Horizontal blocks (i.e., where width is greater than height)
height: auto;
width: 100%;
This makes the image get the effect of Object-fit:cover.
Here is a demonstration of the above logic.
https://jsfiddle.net/furqan_694/s3xLe1gp/
This logic works in all browsers.
HTML:
<style>
#foo, #bar{
width: 50px; /* use any width or height */
height: 50px;
background-position: center center;
background-repeat: no-repeat;
background-size: cover;
}
</style>
<div id="foo" style="background-image: url('path/to/image1.png');">
<div id="bar" style="background-image: url('path/to/image2.png');">
JSFiddle
...And if you want to set or change the image (using #foo as an example):
jQuery:
$("#foo").css("background-image", "url('path/to/image.png')");
JavaScript:
document.getElementById("foo").style.backgroundImage = "url('path/to/image.png')";
Many of the solutions found here have some limitation: some not working in IE ( object-fit) or older browsers, other solutions do not scale up the images (only shrink it), many solution do not support resize of the window and many are not generic, either expect fix resolution or layout(portrait or landscape)
If using javascript and jquery is not a problem I have this solution based on the code of #Tatu Ulmanen. I fixed some issues, and added some code in case the image is loaded dinamically and not available at begining. Basically the idea is to have two different css rules and apply them when required: one when the limitation is the height, so we need to show black bars at the sides, and othe css rule when the limitation is the width, so we need to show black bars at the top/bottom.
function applyResizeCSS(){
var $i = $('img#imageToResize');
var $c = $i.parent();
var i_ar = Oriwidth / Oriheight, c_ar = $c.width() / $c.height();
if(i_ar > c_ar){
$i.css( "width","100%");
$i.css( "height","auto");
}else{
$i.css( "height","100%");
$i.css( "width","auto");
}
}
var Oriwidth,Oriheight;
$(function() {
$(window).resize(function() {
applyResizeCSS();
});
$("#slide").load(function(){
Oriwidth = this.width,
Oriheight = this.height;
applyResizeCSS();
});
$(window).resize();
});
For an HTML element like:
<img src="images/loading.gif" name="imageToResize" id="imageToResize"/>
try this
HTML:
<div class="container"></div>
CSS:
.container{
background-image: url("...");
background-size: 100%;
background-position: center;
}