I (absolute beginner) would like to put an image into a box with a little margin around. I tried with padding and so, didn't work. Then I tried this:
<div style="border:1px solid #CC6699; width:11em; height:5.5em;">
<img style="align:center; width:10em; height:5em;" src="path">
</div>
But instead the image gets stuck in the upper left corner.
Couple of ways to do this:
My usual is to set a background image instead.
In your css:
div#img_container {
background: url(images/myImage.png) center center
}
In your html:
<div id="img_container"></div>
Or to just put some padding around it in your CSS
img#myImage {
padding: 20px;
}
and the HTML
<img id="myImage" src="images/myImage.png" />
Try this:
<html>
<head>
<style>
#wrap {
width: 500px;
text-align: center;
}
.pic {
padding: 5px;
border: 2px solid #000;
}
</style>
</head>
<body>
<div id="wrap">
<img src="logo.gif" class="pic">
</div>
</body>
</html>
CSS level 2 doesn't have a property for centering things vertically. There will probably be one in CSS level 3. But even in CSS2 you can center blocks vertically, by combining a few properties. The trick is to specify that the outer block is to be formatted as a table cell, because the contents of a table cell can be centered vertically.
<div style="border:1px solid #CC6699; width:11em; height:5.5em;text-align:center;vertical-align:middle;display:table-cell;">
<img style="width:10em; height:5em;" src="path">
</div>
EDIT
As rpflo suggests, using the background-position property is especially great if the container happens to be smaller than the image. Just remember to include the "background-repeat:none" style if you don't want the image to be tiled.
Use the following small jQuery plugin. It centers the loading image in the middle of the specified container (vertically and horizontally):
http://plugins.jquery.com/project/CenterImage
Demo site:
http://www.demosites.somee.com/demos/centerimage.html
Usage: This plugin positions a loading image centrally over a specified html container (div, span...).
Currently available configuration settings:
{ path: "../Images/ajax.gif", overlayColor: 'green', opacity: 0.2, zindex: 2000, isrelative:true }
Minimum configuration for initialization:
$('.4th').CenterImage({ path: "../Images/ajax-bar.gif" });
Call this, in order to remove the loading image (and the overlay)
$('.4th').CenterImage('remove');
Related
I have a web application layout like this, styled with Bootstrap:
------------------------
| Header |
------------------------
| Display Area |
------------------------
The Header is a collection of control elements (mostly buttons) and therefore almost of same height.
The Display Area contains the following:
<div class="row">
<div class="col">
<img class="img-fluid" src="http://localhost/api/currentImage" />
</div>
</div>
http://localhost/api/currentImage returns an image. The image's size always differs: sometimes the width is bigger than height, sometimes vice versa.
Now I'd like to scale the image in that way that it uses as much as possible of the available Display without "overflowing". By overflowing, I mean that there is never a need to show a horizontal or vertical scroll bar because the image is too wide or too high. Right now, <img class="img-fluid" ... only scales the width correctly.
How can I achieve this using Bootstrap/CSS?
Bootstrap will let you resize images with its img-fluid class, but if you need to make the image cover the entire space you would have to write your own CSS, you could make use of the object-fit property to set the image to fill the container, while maintaining its aspect ratio and clipping off if necessary;
As you can see in the example below, the image is narrow, but it will fill the entire container even if it has to expand to do so.
EDIT: Included two more examples with fill and contain so you can see how their behavior changes.
header {
border: 1px solid red;
padding: 10px;
}
section {
border: 1px solid blue;
}
img {
height: calc(100vh - 20px);
width: 100%;
/* This is just to remove a blank space at the bottom of the image */
display: block;
}
img.cover {
object-fit: cover;
}
img.contain {
object-fit: contain;
}
img.fill {
object-fit: fill;
}
<header>
This is a header
</header>
<section>
<img class="cover" src="https://via.placeholder.com/200x700" />
</section>
<section>
<img class="contain" src="https://via.placeholder.com/200x700" />
</section>
<section>
<img class="fill" src="https://via.placeholder.com/200x700" />
</section>
Bootstrap has a predefined classes for responsive image. Check the following class,
.img-responsive Makes an image responsive (will scale nicely to the parent element)
<div class="row">
<div class="col">
<img class="img-fluid img-responsive" src="http://localhost/api/currentImage" />
</div>
</div>
`
I have a bootstrap column defined as follows:
<div class="col-md-4 limit">
<img id="myImage" src="" class="img-responsive"/>
</div>
<style>
.limit {
max-height:500px;
overflow:hidden;
}
</style>
The source of the image is obtained programatically so I do not know in advance the height or width of my image. What I want to do is that the image in this column whose height is limited appear completely inside of the div. With the img-responsive class I have achieved the image to horizontally fill my column, however, as this class also sets the height to auto, most of the time this causes the image to overflow and be hidden. I do not want my image to overflow in any way.
So, lets say that my column measures:
Width: 300px (defined by bootstrap)
Height: 500px (.limit)
And my image dimensions are:
Width: 600px
Height: 1500px
The current configuration makes the image shrink to 300px x 750px. As its container is set to only 500px, this causes the last 250px to be lost inside the overflow. I would like to image instead to be resized to 200px x 500px in order for it to completely into the containing div
How can I do this?
Thanks!
Try this:
<div class="row">
<div class="col-md-4">
<div class="limit">
<img src="images/yourimage.png" alt="" />
</div>
</div>
</div>
<style type="text/css">
.limit{
width: 300px;
height: 500px;
max-height: 500px;
overflow: hidden;
}
.limit img{
width: 100%;
height: 100%;
}
</style>
You could try to inherit the height or the width of the parent div (as both would not contain proportions). This could only work if you have the same type of img (all portret or landscape). Other solution is to calculate the dimensions based on the max width/height of the img in your program language. Pick the one that matches the condition (both var <= max value). Then echo the solution in your html.
#Luis Becerril I normally used this plugin with those type of issues. Please try this. If may suit to your requirement. jQuery Image Center
Simplest way in Bootstrap 4
<div class="row">
<div class="col-md-4">
<img src="images/yourimage.png" alt="" class="w-100" />
</div>
</div>
Before continue reading:
This is a polymer 0.5 question and has been deprecated after 1.0 release.
I'm trying to have a toolbar always shown at the top of the web. Then, split the container in a core-drawer-panel, but this element is being displayed always at the top of the web, overwriting the toolbar.
Using the polymer designer: I want to achieve something like this:
If I get the code from the designer, I have:
<core-toolbar id="core_toolbar"></core-toolbar>
<core-drawer-panel transition id="core_drawer_panel" touch-action>
<section id="section" drawer></section>
<section id="section1" main>
<core-field id="core_field" icon="search" theme="core-light-theme" center horizontal layout>
<core-input id="core_input" flex></core-input>
</core-field>
</section>
</core-drawer-panel>
But if I just use that code, the core-drawer goes to top, hiding the toolbar, resulting in something like:
Any idea about how to "move" the core-drawer-panel if there's a toolbar?
Keep in mind I don't want to have a toolbar in the drawer as in the example, but one for the whole app.
Of course, I know I could achieve it by using CSS, but I'm wondering if I'm setting wrong the polymer elements structure.
Just use core-header-panel in order to host your core-toolbar and core-drawer-panel. It will prevent core-drawer-panel of overlapping core-toolbar as you pictured in your example. Here is a jsfiddle and snipped:
http://jsfiddle.net/kreide/ehwa3w1n/
html, body {
height: 100%;
margin: 0;
}
core-header-panel {
height: 100%;
}
[drawer] {
box-shadow: 1px 0 1px rgba(0, 0, 0, 0.1);
}
[main] {
height: 100%;
background-color: rgb(231, 238, 238);
}
<link rel="import" href="http://www.polymer-project.org/components/polymer/polymer.html">
<link rel="import" href="http://www.polymer-project.org/components/paper-elements/paper-elements.html">
<link rel="import" href="http://www.polymer-project.org/components/core-elements/core-elements.html">
<body fullbleed layout vertical>
<core-header-panel flex>
<core-toolbar>
<div>Hello World!</div>
</core-toolbar>
<div class="content">
<core-drawer-panel>
<section drawer>Left</section>
<section main>Right</section>
</core-drawer-panel>
</div>
</core-header-panel>
</body>
The solution by kreide doesn't work for Polymer 1.0
To affix paper-drawer-panel in 1.0 add a css style = "position:relative" to the drawer tag.
I have a few images on my page. I'm finding that the page starts to render before the images have been loading (which is good), but that the visual effect is not great. Initially the user sees this:
--------hr--------
text
Then a few milliseconds later the page jumps to show this:
--------hr--------
[ ]
[ image ]
[ ]
text
Is there a simple way that I can show a grey background image of exactly the width and height that the image will occupy, until the image itself loads?
The complicating factor is that I don't know the height and width of the images in advance: they are responsive, and just set to width: 100% of the containing div. This is the HTML/CSS:
<div class="thumbnail">
<img src="myimage.jpeg" />
<div class="caption">caption</div>
</div>
img { width: 100% }
Here's a JSFiddle to illustrate the basic problem: http://jsfiddle.net/X8rTB/3/
I've looked into things like LazyLoad, but I can't help feeling there must be a simpler, non-JS answer. Or is the fact that I don't know the height of the image in advance an insurmountable problem? I do know the aspect ratio of the images.
Instead of referencing the image directly, stick it within a DIV, like the following:
<div class="placeholder">
<div class="myimage" style="background-image: url({somedynamicimageurl})"><img /></div>
</div>
Then in your CSS:
.placeholder {
width: 300;
height: 300;
background-repeat: no-repeat;
background-size: contain;
background-image: url('my_placeholder.png');
}
Keep in mind - the previous answers that recommend using a div background approach will change the semantic of your image by turning it from an img into a div background. This will result in things like no indexing of these images by a search crawler, delay in loading of these images by the browser (unless you explicitly preload them), etc.
A solution to this issue (while not using the div background approach) is to have a wrapper div to your image and add padding-top to it based on the aspect ratio of the image that you need to know in advance. The below code will work for an image with an aspect ratio of 2:1 (height is 50% of width).
<div style="width:100%;height:0; padding-top:50%;position:relative;">
<img src="<imgUrl>" style="position:absolute; top:0; left:0; width:100%;">
</div>
Of course - the major disadvantage of this approach is that you need to know the aspect ratio of the image in advance.
There is a really simple thing to check before you start looking into lazy-loading and other JavaScript. Make sure the JPEG images you are loading are saved with the 'progressive' option enabled!
This will cause them to load the image iteratively, starting with a placeholder that is low-resolution and faster to download, rather than waiting for the highest resolution data before rendering.
It's very simple...
This scenario allows to load a profile photo that defaults to a placeholder image.
You could load multi CSS background-image into an element. When an avatar photo fails, the placeholder image appears default of div.
If you're using a div element that loads via a CSS background-image, you could use this style:
#avatarImage {
background-image: url("place-holder-image.png"), url("avatar-image.png");
}
<div id="avatarImage"></div>
Feel free to copy this:
<script>
window.addEventListener("load", function () {
document.getElementById('image').style.backgroundColor = 'transparent';
});
</script>
<body>
<image src="example.example.example" alt="example" id="image" style="background-color:blue;">
</body>
I got this from here: Preloader keeps on loading and doesnt disappear when the content is loaded.
Apart from all solutions already mentioned, the last solution would be to hide the document until everything is loaded.
window.addEventListener('load', (e) => {
document.body.classList.add('loaded');
});
body {
opacity: 0;
}
body.loaded {
opacity: 1;
}
<div id="sidebar">
<img src="http://farm9.staticflickr.com/8075/8449869813_1e62a60f01_b.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-1.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-2.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-3.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-4.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-5.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-6.jpg" />
</div>
Or show some animation while everything is loading:
window.addEventListener('load', (e) => {
document.body.classList.add('loaded');
});
.loader {
border: 16px solid #f3f3f3;
border-radius: 50%;
border-top: 16px solid #3498db;
width: 70px;
height: 70px;
-webkit-animation: spin 2s linear infinite;
/* Safari */
animation: spin 2s linear infinite;
position: absolute;
left: calc(50% - 35px);
top: calc(50% - 35px);
}
#keyframes spin {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
body :not(.loader) {
opacity: 0;
}
body .loader {
display: block;
}
body.loaded :not(.loader) {
opacity: 1;
}
body.loaded .loader {
display: none;
}
<div class="loader"></div>
<div id="sidebar">
<img src="http://farm9.staticflickr.com/8075/8449869813_1e62a60f01_b.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-1.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-2.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-3.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-4.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-5.jpg" />
<img src="https://www.nla.gov.au/sites/default/files/pic-6.jpg" />
</div>
The only thing I can think of, to minimize the jump effect on your text, is to set min-height to where the image will appear, I would say - set it to the "shorter" image you know of. This way the jump will be less evident and you won't need to use lazyLoad or so... However it doesn't completely fix your problem.
Here's one naive way of doing it,
img {
box-shadow: 0 0 10px 0 rgba(#000, 0.1);
}
You can manipulate the values, but it creates a very light border around the image that doesn't push the contents. Images can load at whatever time they want, and you get a good user experience.
Here is what I did with Tailwind CSS, but it's just CSS:
img {
#apply bg-no-repeat bg-center;
body.locale-en & {
background-image: url("data:image/svg+xml;utf8,<svg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'><text x='50%' y='50%' style='font-family: sans-serif; font-size: 12px;' dominant-baseline='middle' text-anchor='middle'>Loading…</text></svg>");
}
body.locale-fr & {
background-image: url("data:image/svg+xml;utf8,<svg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'><text x='50%' y='50%' style='font-family: sans-serif; font-size: 12px;' dominant-baseline='middle' text-anchor='middle'>Chargement…</text></svg>");
}
}
You can find the width and height of the images in the developer tools console, for example in Chrome you can click the cursor icon in the developer tools console and when you hover on the page it will highlight all the properties of the elements in the page.
This will help you find the width and height of the images, because if you hover on top of your images it will give you the dimensions of the image and other more properties. You can also make an individual div for each image and make the div relative to the images width and height. You can do it like this:
The main div will contain the images and also the background-div which is below the image.
HTML:
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<div class=".mainDiv">
<div class="below"></div>
<img src="https://imgix.bustle.com/uploads/image/2020/2/13/da1a1ca4-95ec-40ea-83c1-4f07fac8b9b7-eqb9xdwx0auhotc.jpg" width="500"/>
</div>
</body>
</html>
CSS:
.mainDiv {
position: relative;
}
.below {
position: absolute;
background: #96a0aa;
width: 500px;
height: 281px;
}
img {
position: absolute;
}
The result will be that .below will be below the image and so when the image has trouble loading the user will instead see the grey .below div. You cannot see the .below div because it is hidden below the image. The only time you will see this is when the loading of the image is delayed. And this will solve all your problems.
I have got a way. But you will need to use JavaScript for it.
The HTML:
img = document.getElementById("img")
text = document.getElementById("text")
document.addEventListener("DOMContentLoaded", () => {
img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAOEAAADhCAMAAAAJbSJIAAAAA1BMVEWIiIhYZW6zAAAASElEQVR4nO3BgQAAAADDoPlTX+AIVQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADwDcaiAAFXD1ujAAAAAElFTkSuQmCC";
text.innerHTML = "Loaded but image is not";
});
window.onload = function() {
img.src = "https://media.geeksforgeeks.org/wp-content/uploads/20190913002133/body-onload-console.png";
text.innerHTML = "Image is now loaded";
};
#img {
width: 400px;
height: 300px;
}
<hr>
<img id="img" src="https://media.geeksforgeeks.org/wp-content/uploads/20190913002133/body-onload-console.png">
<p>Here is the Image</p>
<p id="text">Not Loaded</p>
I have a div with position:fixed that is my container div for some menus. I've set it to top:0px, bottom:0px to always fill the viewport. Inside that div I want to have 2 other divs, the lower one of which contains lots of lines and has overflow:auto. I would expect that it would be contained within the container div, but if there are too many lines it simply expands outside the fixed div. Below is my code and a screenshot to clarify:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>MyPlan</title>
<meta name="X-UA-COMPATIBLE" value="IE=8" />
<style type="text/css">
#outerfixed { position:fixed; width:200px; background-color:blue; padding:5px; top:0px; bottom:30px;}
#innerstatic1 { width:100%; background-color:yellow; height:100px;}
#innerstatic2 { overflow:auto; background-color:red; width:100%;}
</style>
</head>
<body>
<div id="outerfixed">
<h3>OUTERFIXED</h3>
<div id="innerstatic1">
<h3>INNERSTATIC1</h3>
</div>
<div id="innerstatic2">
<h3>INNERSTATIC2</h3>
line<br />
...lots of lines
line<br />
</div>
</div>
</body>
</html>
Is there any way for me to do this? Again, I want #innerstatic2 to be properly contained within #outerfixed and get scrollbars if it gets bigger than the space it has inside #outerfixed.
I know there are some possibilites to hack around this by also fixing #innerstatic2, but I would really like it to be within the flow inside #outerfixed if possible, so that if I move #outerfixed somewhere, the inner element would come with it.
EDIT: I know I can set overflow:auto on the #outerfixed and get a scrollbar on the whole thing, but I specifically want a scrollbar just on #innerstatic2, it is a grid and I want to scroll just the grid.
Anyone? Possible?
There's a two-step solution for this, but it comes at something of a cost:
Add overflow-y: scroll; to the css for #innerstatic2.
define a height (or max-height) for #innerstatic2, otherwise it won't overflow, it'll just keep increasing its height (the default for a div is height: auto).
Edited because I just can't stop myself, sometimes.
I've posted a demo on jsbin to show a jQuery implementation of this, which will calculate a height for you (it's not generalised, so it'll only work with your current html).
(function($) {
$.fn.innerstaticHeight = function() {
var heightOfOuterfixed = $('#outerfixed').height(),
offset = $('#innerstatic2').offset(),
topOfInnerstatic2 = offset.top,
potentialHeight = heightOfOuterfixed - topOfInnerstatic2;
$('#innerstatic2').css('height',potentialHeight);
}
})(jQuery);
$(document).ready(
function() {
$('#innerstatic2').innerstaticHeight();
}
);
I solved it by giving absolute position to the ul and height 100%
ul {
overflow-y: scroll;
position: absolute;
height: 100%;
}
check out this FIDDLE
overflow-y:scroll;
And add this for iOS devices. It does give a better scroll using touch. The overflow-y needs to be scroll! for secure reasons. auto wont work for some people. or at least thats what i heard.
-webkit-overflow-scrolling: touch;
you should set height for outerfixed and max-height for innerstatic2
see this might be helpful DEMO
It is the container div who has to be with the overflow:auto attribute. In this case, the #outerfixed div
The only way I figure, is to set innerstatic2 to absolute position (so you can use top and bottom to size it in relation to outerfixed), then inside innerstatic2 create another div where you put your text in. Then you give innerstatic2 the "overflow: auto;" indication. The drawback of this method, that innerstatic2 does not move down, when innerstatic1 grows, since it has to be position absolutely. If it needs to move, it must be "position: relative", but then you need to set a fixed height for it. So either way you have to settle for a compromise.
Once all browsers support the newer CSS3 features, like the calculation support, there will be better options to do this, without these drawbacks.
Not ideal, but this should get you 90% of they way
<div style="position:fixed; bottom:1px; left:5em; height: 20em; width:20em; background-color:blue;">
<div style ="width:15em; background-color: green;">
Title
</div>
<div style ="background-color:yellow; max-height:80%; width:15em; overflow:auto;">
<div style="height:100em; background-color:red; width:10em;">
scroll<br/>
scroll<br/>
scroll<br/>
</div>
</div>
</div>
So I couldn't do with the fixed position but I got the desired effect with the position as relative.
Try this
<div class="parent" style = "overflow: scroll; position: relative; width: content-box"">
<div class="scrollable-child" >
//Your content here
</div>
</div>
I used this in one of my vuejs projects
<template>
<v-flex class=" d-flex flex-column " style="overflow: scroll; position: relative; width: content-box">
//FIXED HEAD
<v-flex class="pt-10" style="position: fixed; background-color: black;width: 25.2em;z-index: 1;border-radius: 20px 20px 0 0">
<TextView class="mx-4" text="Thur 28, 2021" size="24" bold :color="colors.primaryText"/>
<TextView :text="`${order.totalOrder()} Items`" size="24" bold :color="colors.primaryText" class="my-2 mx-4"/>
<v-divider dark style="height: 5px" class="max-4" />
</v-flex>
//SCROLABLE LIST ITEMS
<v-flex class=" mx-4 d-flex flex-column justify-end " style="margin-top: 100px;padding-bottom: 100px; padding-top: 50px">
<!-- <TextView :text="receipt" :color="colors.primaryText"/>-->
<ProductComponent type="cartItem" v-for="(product,index) in order.products" :key="`order_item_${index}`" :product="product" :invert-theme="true" #onAdd="addOneMore(index)" #onRemove="removeOne(index)" />
</v-flex>
//BOTTOM FIXED BTN
<v-flex class="d-flex flex-column justify-end mb-2 xs12 mx-4 " style="max-height: 100px; position: fixed; bottom: 30px; width: 23em" >
<v-btn block ref="renderBtn" #click="renderReceipt()" depressed min-height="60" style="border-radius: 20px">
<TextView text="Order" bold/>
</v-btn>
</v-flex>
</v-flex>
</template>