Currently I'm working on a project in which user of website can design a giftwall by drag and drop of gifts. Drag, drop and sorting works perfect and I'm able to store generated giftwall into database. On recipient side system lists all the gift images in the same sequence sender sent so it visually looks like a giftwall. I want to allow users to store this giftwall into a single image so they can store their giftwalls into image album. In current system it lists all individual gifts into a individual div resided in main wrapper div. How can I export this wrapper div to image so it looks same as HTML. Any help will really be appreciated. Waiting for reply.
Thanks!
I don't know if there is a way by using pure javascript, but you can generate the image on your server and send it back.
I have never heard of saving browser's viewport to an image file via JS. I think it's only possible vie creating SVG or using HTML5 canvas.
I asked exactly the same thing a while back.
HTML div to screenshot?
The conclusion is... it is not possible with JS. Questionably possible from PHP also.
Use can use an online service for screen capture, like browsershots, but its not in real-time, and doesn't render everything well.
I used a workaround for my situation.
Recreated all the DOM/HTML elements which create the image (load parameters form database, and generate the DOM). Wrap everything in one container div, and zoom it out to the size you need.
I know, not the prettiest solution, but the only solution I could get to work.
Using <canvas> you can create image that will looks similar to how it looks on the page. Try it this way:
Get the size of wrapper <div> and create the same canvas element. Then get the position of each image in the div wrapper and draw that image on canvas at the same position with the same size.
Things may be harder if you need to draw additional controls, like button or textbox.
All modern desktop browsers suport <canvas> now.
You can either use html2canvas, which isn't perfect yet. Or store browser offsets of elements in div and then with GD or ImageMagick combine them into an image
Maybe this could be of use: http://html2canvas.hertzen.com/
Related
I want to have a map (which is image-mapped) show green in areas where some criteria applies, yellow in some other areas and red in other areas.
The goal is to display a clickable image which will will colour certain states which match certain criteria. I was previously considering flash but the owner simply doesn't want flash. One possible alternative would be to display 'clickable' coloured labels on the map but I don't know how to do this either. Does anyone know how I can solve this? Any help will be much appreciated. Thanks!
Check out Raphael: http://raphaeljs.com/
So this is what I finally did.
I found an svg map of Nigeria on wikipedia (which has the svg maps of
almost every country).
I downloaded InkScape and cut out the parts I didn't need from
the map.
I used the Raphael SVG to HTML Converter tool to convert it to
code usable by raphael.
From here it was quite very easy, I could use path.fill to 'colorify'
the image and it was easy to set different functions for clicking any
part. Scaling was also not an issue as the image could be scaled
dynamically based on the container.
Thanks to everyone especially Olle for pointing me in the right direction!
jQuery Vector Map http://jqvmap.com/
or
JVectorMap
JVectorMap comes with more pre-generated maps than jqvmap. But you should be able to generate your own.
Take a look at jQuery. PHP is not where you will do this, its going to be client side Javascript to manipulate an html image map using either overlay images or a change in CSS via the Javascript.
For what its worth, this can be done in php using the gd extensions. Essentially what you do is load an all white version of the image, and then using coordinates on the image, fill the image with a given color using imagefilltoborder (http://www.php.net/manual/en/function.imagefilltoborder.php) .
However, to make it clickable, you would need to use an image map or javascript on the clientside anyway.
I'm wondering if it's possible to convert markup (HTML and CSS) to an image with php? I want to let a user drag elements around, type in text etc then to allow them to hit save as image. If someone could tell me whether this is possible and any pointers to functions/tutorials on the matter.
Look into the Canvas element (html5), I have only just scratched the surface of my learning on it, but I am pretty sure that it, in conjuction with jQuery, and jQuery UI could achieve what you are going for.
Is there any way to programmatically create (client or server side (PHP)) a image from a specific DIV or a complete (web) page? I'm currently creating a web-site for free coupons and the idea is when the end-user clicks on the "Print" button, the app opens a new tab/window with all the selected coupons as a single image (JPG, PNG or etc..) in A4 format ready for printing. Each coupons has it's own data (Article name, price, description etc..) so I need it to be done programmatically over a coupon-template I designed.
I do not ask you to write code for me, just to suggest a solution I could use/develop. If not already exist, I will upload/publish it for free :)
Update: I did it with the PHP GD library :) Still not satisfied with the idea to use Images instead of PDF, because each printing results with different Coupon sizes (images) on different PC's. That's why PDF may would be a better solution. You can see/test it on demo.svikuponi.ba - Just select a few Coupons and click the PRINTAJ button above.
You cannot create image from div for sure but yes you can create dynamic images in php using its gd library.
Following links will help:
http://php.net/manual/en/function.imagecreate.php
http://phptutorial.info/learn/create_images/
Here is a great way for you to create images on the client side: http://smus.com/screen-capture-for-chrome-os
You can take this and create a web app that will work nicely on webkit (for other browsers - I'll look at JS polyfills).
Did anyone mention html2canvas and/or jsfeedback ?
It create a page screenshot completely in javascript, then you can send to the server via ajax..
Obviously, CSS support lack some things.
In php, there is many image related functions like imagettftext() in GD library
for details, check this out http://php.net/manual/en/book.image.php
if GD is not enough, you can try imagick as well
for the template, you can try creating a true color handle in php from your file(image) and add the text part or something else with all kinds of effects and bar codes etc.
but in your case, i would suggest dynamic PDF creation since it would better with formatting instead of plain image, the pdf lib :
http://www.fpdf.org/
you could easily have a background image of your token/voucher and overlay the text using some php variables.
i believe it is possible to create a unique bar-code with php imaging too.
It is possible to get a screenshot from a webpage, but this is quite a hassle. You need to start a webbrowser to render the page and get a screenshot from that.
You are probably better of by parsing some specification and feeding it to a couple of GD or Imagick functions. This is less versatile, but easier to manage.
I have a php/mysql driven database, where image paths are stored for specific pages. The images are all hosted locally on my server. Users can upload images, and the data is then stored in mysql.
I would like to enable users to draw on top of rendered images.
Do I need JAVA to accomplish this?
Are there other APIs or languages that can aid me in my goal?
Basically, I would just let users draw "on top" of the existing image. Somehow their drawings would be saved to a .png, which I can then overlay on top of the original image. However, I'd like for the user to be able to choose the color, etc. Also, I would like to limit how much a person can draw on each photo per 24 hour period.
So, what do you guys think? Flash? JAVA? Php (if I should be so lucky)? I would love to hear your thoughts on this.
JavaScript.
The HTML5 Canvas might do the trick.
You need not to use Java. You can do that with PHP Canvas programming or in client side javascript canvas.
http://www.phpjabbers.com/put-watermark-on-images-using-php-php20.html
http://motyar.info/blog/2010/04/drawing-on-web-with-canvas-and-jquery.html
Look at SketchPad (http://mudcu.be/sketchpad/) - it has examples of everything you want to do in HTML5 / Canvas, but note that a downside of the Canvas approach is the "save" is a little clunky and seems to be browser dependent. You need to convert the image to a data uri, then save it using the available browser commands manually (like right click and "Save As").
I'm working on a web application that need to allow the user to drag and drop as well as rotate an image.
Drag and drop is solved with the jQuery UI Draggable.
But how am I suppose to rotate an image on the page? My images are mostly one colored rectangles. I used divs to draw them on the page but how to rotate them?
It is okay if they only rotate 22, 5-45-67, 5-90 degrees
So I think of 3 solutions
Using Canvas
Problem: IE support
Using divs
Problem: it also needs canvas to rotate
PHP GD
This solution is the only hope that left.
How it might work: The application will prerender (22,5*x) rotated versions of original image. So they will be ready whenever user wants to rotate an image.
Please help. Any suggestions appreciated
One possible solution is to use a JavaScript graphic vector library that can use automatically an alternative to canvas when used on IE.
Raphael is a really good one, give it a try:
http://raphaeljs.com/
You can find more informations about rotation with raphael here:
How do I rotate a div with Raphael.js?
take a look:
http://www.dyn-web.com/code/rotate_images/
Rotate image clockwise or anticlockwise inside a div using javascript
The server side method sounds a bit wasteful (all versions of the image need to be downloaded), dare I say you should try using Flash for a cross-browser and client side solution.
You cannot manipulate image directly with Javascript other than resizing them (and this is technivally done with CSS, not Javascript...). The best solution would be to use Raphaël; it will allow you to ratate, but also drag and drop, and it is also built using JQuery.
Of course you could alternately use different image states and use them as "sprites" for your rotated rectangles, however you will not play extensibility there. (GD is a bad design, don't use that.)