If I have an image combined with a style:
<img class="test" src="testimage.jpg" />
img.test { width: 50%;}
The image resizes to 50% the width of the box containing it, as well as resizing vertically, maintaining the aspect ratio.
This seems to require the enclosing DIV to be set to a particular width and height value. But if you want the enclosing DIV to resize automatically as the browser is dragged smaller or larger, wouldn't this be a problem?
I've clarified my answer to your original question. Go take a look and see if it clears things up. More or less, if you want the image to resize with the window you can't set the DIV to a fixed width and height. The DIV must have a % width and height also.
You'll need to manually specify the width and height properties to get the image to keep its dimensions. This wouldn't be too difficult if you're using server-side coding (PHP/ASP).
Another way to do it would be to use JavaScript to calculate and resize the image dynamically.
No, the image will still be 50% of the div, and if the div is a proportion of the page, that doesn't matter.
Its all proportions: The enclosing div might be 2/3 of the whole window, and the image will wil 1/2 of that. It all gets calculated before its displayed, just a bunch of number crunching. ;D
Related
I want to load some photos from a server and display each of them in an own box such that the box is filled and the image centered (not stretched), if it is to big. Can I achieve this for example with CSS without knowing the size of each image? Maybe with max-width or so?
Here is an example of what I want:
You could use the CSS3 background-size property.
Specifically, you would use either background-size:contain or background-size:cover.
From the spec:
Values have the following meanings:
‘contain’
Scale the image, while preserving its intrinsic aspect ratio
(if any), to the largest size such that both its width and its height
can fit inside the background positioning area.
‘cover’
Scale the image, while preserving its intrinsic aspect ratio
(if any), to the smallest size such that both its width and its height
can completely cover the background positioning area.
Source: http://www.w3.org/TR/css3-background/#the-background-size
Which one you used would depend on the aspect ratio of the original images you are using.
Scroll down on this resource to see some examples: http://www.css3.info/preview/background-size/
The quickest thing that you can do is to put the image as a background image that is centered:
style="background: url(images/42.png) 50% 50% no-repeat"
Images smaller than the box will be centered in the box. Images that are larger will experience cropping.
The downside is, there is no scaling.
For scaling, you would have to know the dimensions, employ some math to calculate a scaling amount that will preserve the aspect ratio and use an actual element that is inside a cropping container that uses "overflow: hidden".
Here what you do. If for instance the image is inside a DIV with an ID called "boxer" You'll now create a CSS that will automatically re-size every image that's inside the DIV with the ID "boxer" The CSS will look like this
#boxer img {
Width: 600px
Height: 600px;
}
The above CSS will automatically re-size whatever image you put inside to the specifications in the CSS. This will fit the box with the ID "boxer" precisely if the dimensions corresponds to that of the CSS. You could just do 100% for both the width and the height, that way it fits the box.
Currently pictures are being placed into my website within a div container with a given width and height.
Some pictures are landscape, others are portrait.
Currently I give the images a static width and height using CSS to position it correctly inside it's container.
.winner .winner-image img {
height: 159px;
width: 143px;
}
However more often than note this distorts the picture.
What's the recommended way to display images without distorting them? Best practices?
Without some server side code to actually determine the height and width of the image, the best idea would be to set EITHER the height OR the width, but not both. This will cause the image to be resized proportionally. Which dimension you choose to constrain would depend on your site layout.
To not distort them, the images must be given their native height and width (or a proportional value). Just assign one of the values, and most modern browsers will scale the image proportionally for you.
You can add an external element (span or div) with a fixed size, and have that element not display overflowed content.
To guarantee that your images are re-dimensioned, you can also set a height OR width value for images, matching the wrapping div value (only one value must be assigned, so that images are not distorted.
<style>
.img-wrapper {display:inline-block; height:159px; overflow:hidden; width:153px;}
.img-wrapper img {height:159px;}
</style>
<div class="img-wrapper">
<img src="">
</div>
The best way is to create thumbnail of your image once uploaded to a server. Thumbnail should be 159x143 px, but if you need to show images now you can set for div fixed width with css property "overflow: hidden;" and just set height of your image. do not touch width
If it's important that all images show in the same size, and you don't want to distort them, you have to crop them for the best result. Otherwise, you could wrap the image in a div, set the height and width of the div and hide the overflow, or use the image as the background for the div.
If height and width may be different across images, then go with the solutions already mentioned, i.e. setting either height or width.
Is it possible to make an element behave/sized like the background-size:contain? For reference, here's a page demonstrating background-size:contain (try resizing your browser window and see what the background image does).
That is, I want to make an element with constrained aspect ratio, with width and height such that either width or height will be 100% of the window width (and the other will be whatever is necessary to preserve ratio and keep the entire element visible in the window without scrollbars)?
For example, suppose I want an element to have a ratio of 16:9. If someone's browser window is super wide and not very tall, then I want my element's height to be 100% and the width would be less (whatever is necessary to keep the element's ratio 16:9). If someone's browser window is really tall and not very wide, then the width would be be 100% and the height would be less (again, whatever is necessary to preserve that element's target ratio).
I'm thinking the only way to do this is with javascript. Is there some magical CSS way to accomplish this that I don't know about?
I guess you want to have a liquid template view.
Checkout this example if it suits your need
http://www.maxdesign.com.au/articles/liquid/liquid-sample1/
Thanks.
I think similar questions have been answered, but none really seem to have helped me out that much.
I have a table that is set to width="100%" with a cell on the top row.
This cell contains an image which is fairly wide.
When I resize the window, and therefore the table, the image does not resize below 100% of its original size.
Is there a way to get this image to reduce in size as the table shrinks?
Set image width to 100% as well.
If this doesn't help set it to auto!
#img{width:100%;}
or
#img{width:auto;}
If you want it to actually get smaller than the specified width/height (or the original width/height) of the image, you need to do some scripting. This means you can hook up the resize event of the browser and reset the width/height of the image equally while resizing.
Another option is to wrap the image in a div with an overflow:hidden specified. So if the div gets to large for the window, it will hide the pieces of the image that fall outside the window.
I have an image that, depending on the screen resolution, drops down out of sight in my CSS flow layout because I have set its width and height to static values.
Is there a way in a CSS flow layout to have the image automatically resize while someone is making the browser window smaller. I have seen this done in a html-table layout and I assume the tables make it possible there - is there a way to also do this in a CSS flow layout?
A quick test shows that this:
<img class="test" src="testimage.jpg" />
combined with:
img.test { width: 50%; }
Resizes the way you probably want. The image dutifully resized to 50% the width of the box containing it, as well as resizing vertically, maintaining the aspect ratio.
As for resizing based on vertical changes, it doesn't work the way you would like, at least not consistently. I tried:
img.test { height: 50%; }
In current Google Chrome (2.0.172), it resizes somewhat inconsitently; the sizing is correct but does not update after every window drag. In current Firefox (3.5), the height seems to be ignored completely. I don't have any remotely recent IE, Safari, etc to test. Feel free to edit in those results. Even if those do well its still probably something you want to avoid, and stick with width.
EDIT:
For this to work, all the elements containing img.test need to be sized with percentages, not statically.
Think of it this way:
body is 100% of window size.
img is 50% of body.
img is 50% of window size.
Now suppose I add a div. like this...
<div class="imgbox" style="width: 100px;">
<img class="test" src="testimage.jpg" />
</div>
Then
body is 100% of window size.
div is 100px, ignoring body width.
img is 50% of div.
img is 50px, regardless of window size.
If the div has "width: 100%" though, then the logic works out the same as before. As long as its some percentage, and not fixed, you can play with the percentage on the img and make it work out the size you want.
bit of a guess since my css is rubbish, but since nobody is answering, what about setting a % width or height or both in the image so that it is a percent of its parent. dunno?
Try setting max-width to something like 95%. Thank way the image will shrink when the container width is less then the width of the image. All of the parent containers would need to adju
max-width:95%;