Image Magnifiers and Clickable Content - javascript

I'm currently using an application that generates large images for organizational maps, unfortunately the content is quite small due to the volume of data being output. I would like to find a way that allows the user to view segments of the map in an intuitive manner, yet still allow the user to click content inside of the map.
The first thing that came to mind was an image magnifier using something similar to the loupe jQuery plugin. This works great for magnifying the image, but I can't select content once magnified. If anyone has any suggestions for possible solutions to this issue I would greatly appreciate the help.
Thanks!

You might try Etalage: http://frique.me/demos/etalage/ -- if you click on the image, the link works (triggers the javascript alert), almost no other image zoomer seems to do that.
I'm trying to find something that returns the coordinates on a click, so I can ask users to zoom and and find things within a picture, and then I'll have the coordinates to crop the picture to extract the items they've found. But I haven't found a script that does that yet, either.

Related

preview/enlarge/zoom image api for my laravel app

I am making my website and I want to show some images on it in small area, say in a 300x300 <div>.
What I want is that the images can be previewed/enlarged when someone clicks on them, so that the user can have a better and bigger view of the image.
For ex.- when you click a product image on flipkart.com / jabong.com, you can see an enlarge view of the image. In flipkart, it magnifies the image, and in jabong, you can rollover the image(which is kind of a zoom).
I have searched a lot over google for some kind of API for this but I couldn't find anything. So, my question is - 'Is there an API which could do this kind of job? If not, then how is can this be implemented? Especially, what jabong does - rolling over the image'.
If there are no APIs, please guide me on how this can be implemented. I don't want any code for implementation. Just give me some good pointers to follow.
You're probably looking for something like this:
Magnifier.js
If this doesn't fit your needs.. a Google Search will reveal a few suggestions:
jquery-zoom-effect-plugins

Hover over an image area to change the image src

Basically, I have an image (of text) that I want to change to one of four other images on rollover of different areas. The difference is, on roll-off, I want it to remain what it was changed to, unless my mouse enters a different area. I've tried image-maps and whatnot but I can't seem to get this right. As far as my overall coding knowledge goes... well, I started last week, but I'm getting there.
Here's a link to an image overview of what i (kind of) mean.
I know it has probably been answered somewhere at some point but I really haven't managed to find anything that works yet - all I've managed is stuff that either disappears completely or doesn't work with multiple images. Any help would be much, much appreciated.
YOu can use image maps
http://www.outsharked.com/imagemapster/
this is great tool, try it. it is not so hard :)

How do I access separate points/sections on a single image in html/javascript?

I am learning to develop mobile applications, quite in the initial phase.
This query is not related to mobile but more to html/css/js.(for
I intend to make a simple game, where a picture is seen, a few options are available and the user can drag and drop these options onto the image.
eg. There is an image of a plant > options are #leaf #stem #flower #bud
The user must drag and drop the correct option to the correct place on the image to get points. i.e Drag the #leaf option onto the leaf of the plant.
Now my problem is the image, the separation of these points, I can't figure out how to do it.
Query in short: How do I access separate points/sections on a single image in html/js for above purpose?
Query (longer version)
I did a little search and realised I can slice the image and recreate it using multiple images, I tried this, it sort of works but it has a a lot of drawbacks:
1)More images mean more space, combined size of the split images was about 1.5x the original image(this is just splitting it into 4 images)
2)For a complex picture, the number of images to slice into is large and hard to manage in css(n00b==me) as they don't just need to be split into a simple X*Y grid but a much more complex split depending on the object in the image.(realised when I was trying to do a simple cell structure img)
3)More images also means more http requests(in case the app is WebView based) which will increase loading time.
It just seemed liked too much of a hassle, there must be a better way.
Then I saw css sprites , I dont need to combine my images like sprites are intended for, rather the reverse. Just access parts of my pre-existing image, as separate objects.I haven't tried this(working on it) and and I haven't seen this being done either, or maybe its being done and I'm not seeing.
Please help guys, my problem is quite simple(I think) , I think I'm just not getting the correct google search terms.
If anybody has any ideas,links, resources and also any clarifications as I may not have put up my problem as clearly as I'd like to, please do reply.
regards,
Rahul Agarwal
You could try to place transparent divs over the main image using absolute position and fixed dimensions. Those divs will be assosiated to the possible options, and when a user drops an option over some specific div, you'll know what points to give.
Little demo using two divs and an animated scaling to show that the positioned divs will scale according to their parent:
http://jsfiddle.net/VK3A8/
fiddel with image:
http://jsfiddle.net/8qLFc/4/

jQuery and Rails image tagging / rectangle selection

I have a simple problem in my mind but can't figure out where to start and JS isn't my strongest front. The JavaScript part is what gives me troubles.
I have an uploaded image which I want to drag my mouse upon to make a rectangle and get the rectangle coordinates. Those coordinates should go into my Rails app db so that this rectangle is latter displayed to the user and the image part that is selected will be zoomed to the user.
I've gone through several jQuery plugins that do tagging on images but first of all they are too complex for my needs and can't be customizable to this specific need of mine.
In order to get a real live example please see this http://www.stylebistro.com/lookbook/Tops/PJfJzgo2fN9
It is essentially what I want to achieve but the administration part is giving me troubles.
Regards,
Yavor
jCrop has an API that returns image coordinates. It can zoom the image as well, so it should be a good fit.

Would Like Multiple Checkboxes to Update World PNG Image Using Mogrify to FloodFill Countries With Color

I'm seeing in another forum if the best way to do this is with Javascript or Ajax but I'm wondering if there is an even easier simpler way. I'm trying to create a web service where users can check which countries they have visited from a list of 175 or so and a World map image would then instantly update with a filled color.
There are other similar services, but I'm envisioning mine to be both updating from checks in checkboxes and by clicking on the target country in the displayed image say with an imagemap. Additionally other solutions display all the visited countries in the same color. I would like different colors for different countries or at least for those countries that touch. Eventually I would like to include a feature that enables the choice of which colors to assign countries.
I found a Sourceforge project called pwmfccd. It's simply an open source image of the world and the coordinates on the PNG image for all the countries. You can use mogrify from ImageMagick and floodfill to fill the countries with color. I have done this successfully, locally with batch files.
My ISP has told me where mogrify is located, basically "/usr/bin/mogrify". I now have a horrendously complicated cgi script which if it worked is set to redraw the world map image with each checkbox. It's here. It also redraws the whole web page with each check. The web page starts here. Of course this is not at all efficient, and I think probably the real way to go is Ajax or Javascript, so that maybe just the image gets changed and redrawn, not the whole web page. Sorry I don't even know the difference between Javascript and Ajax and their relative merits at this point.
I suppose you could make just one part of the image update with each check or click on the image instead of even just the image redrawing, but I have never even heard of a hint at being able to do that for irregularly shaped image elements like countries. So I guess an Image map and sister checkbox entries tied to mogrify events redrawing the user's personal copy of the image with an image refresh would be the only way to go.
So how do you do this with something other than Javascript or Ajax or is that definitely the way to go and if so, how would you do it? Or can you after all cut up a web based image into irregular puzzle shaped piece which you can redraw individually at will.
Thanks in advance for reading and considering answering this post.
Well, it looks like maybe my hosting company only supports using PHP with ImageMagick. At least I know better what to try create. I'm completely new to PHP, but I guess that is alright

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