We Keep Coding

How to resize a png image to fit in a div?

I am trying to resize a PNG image to fit in a div
This the div where I'd like to fit it in:
But this is how it looks like:
I tried to solve it by this Changing image sizes proportionally using CSS? but no change was noticed.
Here's the code snippet:
<div className="Card-header">
{this.props.roadmapID}
<label className="Card-header-status">{this.props.technology.toString().replace(/,/g , " ")}</label>
<label>{this.props.category}</label>
<img src="images/dark_chat.png"></img>
<CardStatus
status = {this.props.status}
onClickStatus = {this.props.onClickStatus}
/>
</div>

div.Card-header > img {
max-width: 100%;
max-height: 100%;
}

Use in your Stylesheet
.Card-header {
width: XYpx;
height: XYpx;
}
and this in your html:
<div class="card-header">
<img src="yourpic.jpg" style=" width:100%; height:100%;">
</div>
Your image will now expand to your given div size you declared in the stylesheet.

Why not set your image height to 100% of your div and then use width:auto ?
<img src="/path/to/your-image.png" style="height:100%; width:auto;" >
Even if the height of your div changes, the image will adjust proportionally.
Also, if you want this page to load reasonably quickly, it would definitely be worth re-sizing that image.

There is no code so this is a guess:
<div MB018>
<img src="whatever.jpg" width="10px" height="10px">
</div>

Having an image fill a container after transform(90deg)

I would like to have an image rotate and fill the container after it's been loaded. The issue I'm having is the height is automatically set when loaded and then not resetting after rotation. Here is a JSFiddle of the issue:
$('.load').on("click", function () {
var image = $('.image');
image.attr("src", "https://s-media-cache-ak0.pinimg.com/736x/f5/a0/62/f5a0626a80fe6026c0ac65cdc2d8ede2.jpg");
image.addClass('rotate-image');
});
.image {
max-width: 100%;
max-height: 100%;
}
.rotate-image {
transform: rotate(90deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="img-container" style="background:black; height:100px; width: 200px; text-align:center">
<img class="image" src="" />
</div>
<br />
<button class="load">Load</button>

This requires the max-width and max-height styles to be removed, though.
To fit the image, it has to be made larger so that it width (height, when rotated) becomes as big as the container's height. However, it's rotated only visually and the browser doesn't care about that because transform doesn't change the flow of the website. For it, there is an "unrotated" picture whose height is now bigger than its container. Visually rotating the image doesn't change anything. For that purpose, the image needs to be pulled up with a number of pixels equal to how much its bigger than the parent. Those pixels are divided by two because the image overflows at the bottom only.
Play with the fiddle to see what I mean.
$('.load').on("click", function() {
var image = $('.image');
image.attr("src", "https://s-media-cache-ak0.pinimg.com/736x/f5/a0/62/f5a0626a80fe6026c0ac65cdc2d8ede2.jpg");
image.addClass('rotate-image');
var parentHeight = image.parent().height();
image.css("width", parentHeight + "px");
image.css("position", "relative");
image.css("bottom", ((image.height() - parentHeight) / 2) + "px");
});
.rotate-image {
transform: rotate(90deg);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="img-container" style="background:black; height:100px; width: 200px; text-align:center">
<img class="image" src="" />
</div>
<br />
<button class="load">Load</button>
Edit: Beware, if you load the image from an external source by setting its src and immediately rotate it, image.height() might return 0 and the image might be displaced. Then, if you click again, its height is now correct and it gets placed right.
I'm not absolutely sure, but I think that's because when you load the image, the browser needs to download it first, meaning that you don't yet know what its dimensions are.
To see that in action, paste some image URLs from Google in the fiddle I provided.

You need to do this by javascript or jquery. Your goal is:
.Rotated_Img ...
width = 100 % of parent height
height = 100 % of parent width
And i do not think css has any think for this, until the parent width and height have related to view port vw and vh.
jquery:
$('.Rotated_Img').each(function(){
$(this).css('width', $(this).parent().height() + 'px');
$(this).css('height', $(this).parent().width() + 'px');
});

How to set all DIVs to same height to all DIVs in same table row?

I have a html table with three columns. Each table cell contain DIVs with different content and one of them contain an image. I have a small JS function that sets the height of the images DIV containers to one of 2 possible heights.
Image natural height is < 60px == container DIV is 60 px high
Image natural height is > 60px = container DIV is 104 px high
Now I need to figure out how to set all three image DIVs to the same height on each table row.
Row with only small images = all three image DIVs should be set to 60px.
Row with one or more large images = all three image DIVs should be set to 104px.
This is my js snippet:
$('div.givarbild img').each( function() {
var container = $(this).closest('div.givarbild');
$("<img>").attr("src", $(this).attr("src")).load(function(){
var picHeight = this.height;
console.log(picHeight);
if(picHeight < 60){
container.height(60);
}else{
container.height(104);
}
});
});
HTML
<tr>
<td>
<div class="givarbild"">
<img width="100" height="50" src="image path">
</div>
</td>
<td>
<div class="givarbild"">
<img width="150" height="50" src="image path">
</div>
</td>
<td>
<div class="givarbild"">
<img width="90" height="90" src="image path">
</div>
</td>
</tr>
My jquery/JS function only sets the current image DIV to 60 or 104 px, so that these container DIVs can have different heights on each row. But as I wrote above, I need to set the same value to all three image containers on each row.
In the HTML example above all DIVs should be 104 px high, since one of the images is over 60px. How can I modify my code snippet to do what I want?
EDITED:
I cannot use 100% height for the DIV with the class .givarbild because I also want the images to be vertically centered in the DIVs on each row. The vertical centering is obtained with this css (in order to use max-height: 100% the container must be set to a px value:
div.givarbild {
height:100px; /*this value is overridden by my JS*/
min-width:190px;
position: relative;
margin:10px 0px;
}
.givarbild img {
max-height: 100%;
width:auto;
position: absolute;
top: 0;
bottom: 0;
margin: auto 0;
}
I looked at Flexbox, but it seems a bit over the top for this task? I will investigate further though, thanks for the suggestion.

Going the same way you are already going... in the html you can set the height of each div to be 100%. Better yet, set the class givarbild to have a height property of 100%. That will size them to the size of the cell they are contained in. The cells will autosize to the size of the biggest image, so all of them will be the same height.

Fit image into a container, even when src is changed

I'm sure there are other post that address this in various ways.
I've been struggling with this a bit, trying to do CSS only approach with no luck. Playing around with css width and height, doing a mix of 100% and auto on the image got me nowhere.
Given html:
<div class="container">
<img src="http://image" />
</div>
And css:
.container { width: 500px; height: 400px; }
How to fit images of various sizes into the container while preserving aspect ratio and obeying constraints of the container?

I believe you are far over-thinking this.
Try adding the following CSS, and removing the javascript:
.container img {
max-width: 100%;
max-height: 100%;
}
Here's a demo (click the images to dynamically load a different size)

I ended up with javascript solution - I know, not ideal but it's the best I could come up with that does what I need it to. The page where I'm using this relies on javascript to perform other bits of functionality so that's not a problem in my scenario. I'm also loading images into a Bootstrap grid layout column, like so:
<div class="row">
<div class="col-md-6">
<div class="main-image">
<img src="http://initialimage" />
</div>
</div>
<div class="col-md-6">
Some content here ...
</div>
</div>
The width of the container in this case is controlled by bootstrap layout css so I only need to set the height of the container:
.main-image { height: 400px; }
I tried with using just
.main-image { max-height: 400px; }
So that the container would adjust to horizontally stretched images but then jQuery gets the container height wrong.
Anyway, here's the javascript I'm using:
var imageLoaded = function () {
var container = $(this).parent();
var maxWidth = container.width();
var maxHeight = container.height();
var width = $(this).width();
var height = $(this).height();
var containerRatio = maxWidth / maxHeight;
var ratio = width / height;
if (ratio > containerRatio) {
$(this).attr('width', '100%;');
$(this).attr('height', 'auto');
}
else {
$(this).attr('height', '100%;');
$(this).attr('width', 'auto');
}
};
$(document).ready(function () {
$('.main-image img').bind('load', imageLoaded);
imageLoaded.call($('.main-image img'));
});
You may wonder why the manual invocation of imageLoaded function - it's because in IE, the event doesn't fire for the initially loaded image. Invoking it manually corrects that.
You can then change the image source:
$('.main-image img').attr('src', 'http://otherimage');
And the image will adjust to fit the container by either using up full height for vertical images or full width for horizontal images.
Any better way to do this or comments welcome.

Get div height depand on parent div height and parent height depand on document height

Here is my sample code
<div id="one">
height based on screen
<div id="two">
height based on id="one"
<div>
height based on id="two"
</div>
</div>"
</div>

html, body { height:100%; }
#one { height:some%; }
#two { height:some%; }
CSS - no JS needed here (unless you want to change the heights later).

Simply use $(this).parent().height(); for every div

Set Height and width in %. It will take the parent div's Height and Width.