Cropping a long sized image - php

OK, let's say I have this image:
In my Java game, I use a cropping method which crops each monster of 32x32 pixels and thus puts in monster[0] onwards. Anyways, in PHP, is there some way I can do this? Like crop an image and go from there?
Any help would be appreciated.

You can use imagecreatefromgif() with PHP where you can create a new image on the fly by giving specific x and y positions. Rather than just me copy/pasting the code, here is the link to the documentation.
http://php.net/manual/en/function.imagecreatefromgif.php
You can also use different variations of imagecreatefromgif() such as imagecreatefromjpeg() or imagecreatefrompng() etc
All are linked to on the PHP documentation page as well as more examples in the comments.

Hi you can crop the image via imagecopyresampled the man page
http://php.net/manual/de/function.imagecopyresampled.php
You just have to set the correct offset.
if this should be displayed in a Browser you can do it even via CSS
.selector {
height: 32px;
width: 32px;
overflow: hidden;
display: inline-block;
background: url(theimage.gif) -32px 0px no-repeat;
}
Hope it helps

Don't crop it. You can use it as it is with CSS background-position. The the sive of a and move the background to the image you want. It is faster than loading every image on its own.

Related

Solve Picture Stretching

I am making a project in which I am using a cover picture like Google+.
approx Full on screen but when I upload small size pictures or very large size pictures, it stretches or compress in preview.
simple tag I am using to fit in my box is
<img src="coverphotos/1291384_4846629064030_1548133592_o.jpg" height="530px" width="1024px" style="border-width: 0px; margin-top:-4px">
Very very important. I wanted to make a cover picture on my project but i am getting irritated because its stretching, and making picture ugly, how Facebook,Google+ upload a cover picture without stretching?
Preview.
http://www.tiikoni.com/tis/view/?id=479959b
I don't want it to get stretch, while uploading on fb and google its works osm
Either set the height to 530px OR set the width to 100%, don't do both together.
The picture will not be stretched and will maintain its aspect ratio. :)
This: height="530px" width="100%"
You're telling the picture to take the full width of its parent and to be exactly 530px high. What you probably want is unconstrained height on the image, but constrained height on its parent with overflow: hidden.
Take a look at this article: Perfect Full Page Background Image
Based on your link, this css fixed the issue.
body {
width:100%;
margin: 0;
}
center {
width:100%;
}
center img {
width:100%;
height: auto;
}

'Stretching' an image depending on post size

On the World of Warcraft forums they have a neat style set up that I'd like to emulate. I didn't know how to do it, so I decided to dig through their stylesheets and grab the pieces of it and put them together to learn how to make a style similar.
When digging through the stylesheets, I found this image. As you can see, it's the background for their forum posts, but it's a fixed size. Here's my question - how are they dynamically creating more length if a user's post is much longer than the picture is?
On a test website I grabbed the same CSS they used for that section. They have it set on overflow:hidden; so that it doesn't keep multiplying the image. Naturally, copying parts of their code gets me this mess on the test website.
It works correctly for smaller posts, since they just have to cut it off, but I'm assuming they have maybe a very thin (set width, perhaps 1 pixel in height) .jpg image that they are multiplying depending on the size of the forum post.
Does anybody know how I might go about doing this?
P.S. Naturally I'm not going to be using their images and such - I'm only copying it for now just to understand how to make my own.
Something like:
CSS:
.post
{
background:#1A0F08 url(http://us.battle.net/wow/static/images/layout/cms/post_bg.jpg) top no-repeat;
}
(the image and the color are those really used, hope they don't sue me for that :) )
is what you're looking for. The background image is positioned on top and stays there, while the rest of the container's height has the same background color that the image fades to (using a gradient). So it's just an illusion of a stretched image, but effectively is just that you don't see the interruption where the image ends
It looks like their background color for the post is the same as the color at the very bottom of that image. That way it just "fades" in - the image does not actually change size.
Example CSS would be:
#yourPostSelector {
background-image: url('path/to/image.jpg');
background-position: top left; /* or 'top center' - whatever works for you */
background-attachment: scroll;
background-color: #000000; /* pick the bottom color of your background image */
}
Just change you background color which you have used is #00000*
It should be changed to the color of the background image which you use, basically the bottom part so that it blends perfectly. Presently as per your present image the code would be like this :-
.body {
background: url("../images/post_bg.jpg") no-repeat scroll 50% 0 #1A0F09;
clear: both;
height: 100%;
margin: 0 auto;
overflow: hidden;
width: 990px;
}
Update this class and check the result, if you don't understand comment here would make you understand.

Getting a CSS attribute from PHP

It's my first time asking here (I have visited the site several times, but never asked). Well, let's go to the question:
It happens that I'm developing a live image resizer (I know it already exists, but I'm doing my own for my own projects). It has three parameters: the image path (obviously), the size I want to resize and the extra margin I want to add. The idea is to resize the image inside a box with square dimentions. The problem is, the size I want to resize depends on the size of the outer box. For example, I have this HTML code:
<div class="image_outer_box">
<img width="300px" height="199px" style=" margin: 65.5px 15px;" src="img.jpg">
</div>
The properties of "image_outer_box" are the following:
.image_outer_box
{
height: 330px;
width: 330px;
border:solid 1px #737373;
}
The function I call is this:
liveResize($img, $size, $extramargin);
The problem here is when I send the $size, since I must be aware of the CSS properties of "image_outer_box" in order to make the right resize. And, as you can see, it's not only a matter of the size specified in "image_outer_box" but the margin I want to add. Actually, I wanted to add 15px of extra margin for the image and resize the image inside 300x300.
It's not critical to have a way to get the CSS attributes from this particular class, but it would help if I (and other developers) can apply the function without being aware of the CSS attributes of the container where the image will be placed.
If there's a way to make it, I would be great.
Thanks! (for the other times I came here to search a solution and I found it!!!)
EDIT: I found a way that doesn't require to get the CSS properties, but still I would like to have info for this matter. Thanks for those who tried to help 'til now!
Do you want to actually store the resized image, or are you just trying to display it resized? If the latter is the case, the following solution might help:
HTML
<div class="image_outer_box" style="background:url('img.jpg') no-repeat; background-position:50% 50%; background-size:100%;">
</div>
CSS
.image_outer_box
{
margin:10px;
height: 330px;
width: 330px;
border:solid 1px #737373;
}
Of course, this doesn't allow you to manually set the width and height of the image, since that depends on our CSS entirely. Change the CSS, and the size of the image will automatically change as well. I like this method quite a bit, but it won't get very far if you want to store the image or if you want to be able to set the image size manually.
I think in order to be aware of the CSS and change according to the current client side state of the image you should (I mean I would recommend) use Javascript and maybe if you want to keep the function call it over AJAX.

Hover image shows only original image without hover image when trying to create a sprite. Any ideas?

I tried to make a sprite by copy-pasting the code you gave to the userbar.php file. I kept the CSS the same as above. I saved the file with photoshop "save for web -> gif 64 no dither" and kept a small space between the two images in the file. I then uploaded it and referred to the file. But for some reason it only shows the normal image without the hover. Any ideas what I did wrong there? The code for php:
.myButton {
background-image: url(/wp-content/themes/cosmicbuddy/_inc/images/see.gif);
display: block;
height: 22px;
width: 22px;
}
.myButton:hover {
background-position: x y;
}
The original thread: How can I make this hover code shorter? And how can I create a css file that implements settings to more than one button?
Try
.myButton:hover {
background-position-x: -22px;
}
if the sprite is horizontal, else background-position-y.
For better understanding of sprites, watch this article about spites on nettuts+.
.myButton:hover {
background-position: 5px 5px;
}
One solution might be to specify the actual positional values for the sprites located in see.gif, as it's not clear if you're using x y as values or just as a placeholder for the snippet above.
If it's not a placeholder, well yeah - there's your problem. Just change x into the actual x-position and y into the y-position and you'll be fine.

Add border to image in PHP

I want to improve one of my Facebook apps by allowing the users to apply border styles to their images. I am not exactly sure how this can be done, but hopefully someone here will be able to help. The application is written in PHP. I originally thought that I would be able to create an image with just the border, a few pixels wider and taller than the image I wanted to add the border to, then just merge the two images, but that didn't work.
Any help would be great, and rewarded with your name and Stackoverflow profile image postedon the Credits page of the app.
Try putting the background image in the CSS background property.
How about some code using random images from google searches?
<div id="myWrapper" >
<img src="http://www.iconarchive.com/icons/rokey/the-blacy/128/secret-smile-icon.png" id="myImage" />
</div>
<style>
#myWrapper {
background-image: url(http://images.clipartof.com/small/210747-Royalty-Free-RF-Clipart-Illustration-Of-A-Diamond-Plate-Border-Frame-Around-Blank-White-Space.jpg);
width: 450px;
height: 450px;
}
#myImage {
margin: 160px 160px;
}
</style>
Note: I don't claim these images. I'm just saying this cos somebody's gonna bitch. Watch and see ;)
EDIT
I see now however that maybe he does just want to add a style as another poster suggested. So now we're back to asking the OP does he mean how does he store user preferences for images and then dynamically add that style onto an image as it's posted from the app?
I guess that would call for an inline style wouldn't it? ;)
myImageSource = "<img src='".imgSrc."' style='border: 2px solid ".imgBorderColor.";'/>";
Assuming you're using GD to create the images, you can use imagerectangle() to put a border around the image. PHP.net has a great example: http://us2.php.net/manual/en/function.imagerectangle.php
#drachenstern: CSS is a good idea, but how would the background help? CSS has a border property that can be used. ;) img.someclass { border: 2px solid black; }

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