I build bar codes using jquery in a div in my web app.
The black bars are contructed as a set of div tags with their background as black or white as follows,
<div style='padding: 0px; overflow: auto; width: 194px;' id='bar1'>
<div style='float: left; font-size: 0px; background-color: #FFFFFF; height: 40px; width: 60px'>
<div style='float: left; font-size: 0px; width:0; border-left: 2px solid #000000; height: 40px;'>
I have tried multiple PHP packages (htmp2pdf, dompdf, tcpdf) to convert this to PDF but come up with either a blank PDF or an error as it sees nested div in the content.
Can anyone tell me how can I convert these generated barcodes to PDF suing PHP?
Try wkhtmltopdf which is a simple shell utility to convert html to pdf using the webkit rendering engine.
To use it, unpack it and run it like this:
> wkhtmltopdf www.mydomain.com/barcode3 barcode3.pdf
Basically, it will run over n HTML pages and generate PDF's without the overhead of purely dynamic PDF generation!
This might offer you a solution, but you'll need to check the requirements and see if it fits with your server constraints. It worked really well when we used it for producing accurate reports directly from HTML.
EDIT: EG, running it as a potential user function from within PHP:
For Linux:
exec("wkhtmltopdf http://mydomain.com /home/user/$user.barcode3.pdf 2>&1");
For Windows:
<?php
exec('C://path/to/package//wkhtmltopdf http://mydomain.html barcode3.pdf');
echo "PDF Created Successfully";
?>
Would it help if you used <img> data instead of drawing the bars with <div> rectangles? Not sure if you need Code 128 or another symbology, but there is a complete set of inline (base64) Code 128 images at http://notionovus.com/blog/code-128-barcode/.
I initially tried to generate barcodes by drawing rectangles, but found that letting the browser do the scaling saved me a lot of work. Sounds like the <div> tags have their down side as well.
Related
I've been attempting to create a hero header in my Laravel 5.4 project. However, one certain thing doesn't seem to be working the way it's supposed to.
(If you're not familiar with what a hero header is; it's basically an image stretching over the entire screen used as a background upon first loading the website, usually with some text and a call to action on top of it.)
This is the way I've structured my code, based on research I've been doing:
home.blade.php:
#extends('layouts.app')
#section('content')
<div class="container">
#include('partials.hero')
</div>
#endsection
hero.blade.php:
<div class="hero-image">
<div class="hero-text">
<h1>Hero header</h1>
<p>Hero text</p>
<button id="hero-prim" class="button-primary">Action!</button>
<button id="hero-sec" class="button-secondary">Info</button>
</div>
and finally the css:
.hero-image{
background-image: url(/images/hero-image.png);
width: 100%;
height: 50%;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
position: relative;
}
.hero-text{
text-align: center;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
color: white;
}
The strange thing about this is that the text and the buttons are loaded with the page, but there's no sign of the image. Even if I exclude any other elements and try to only show the image, it gives me nothing.
This makes me think the issue must be in how I'm setting the background-image in my CSS, but I've no idea how I'd have to do it differently.
Any help or advice is greatly appreciated!
EDIT:
The image now displays properly, but doesn't stretch across the entire width of the screen, instead I think it only stretches across the section.
In any case, I'm not sure exactly which change in code made this happen, but after trying out some Bootstrap classes on it and defining the height of html and body as 100% (courtesy of VegaPunk), things have been better.
I'm sorry I can't define a more clear answer, but it's still a mystery to me, since yesterday none of these solutions seemed to work on their own.
I face the same problem and solved it just now. My css code was background: url(images/banner.jpg); and the error was Failed to load resource: the server responded with a status of 404 (Not Found). The solution is adding two dot '.' and a single slash '/' before images background: url(../images/banner.jpg);, Now the image has been appeared. My images and css folder in my project public folder and banner.jpg is in the images folder.
Your image should be located in your public folder. So create a folder in public called 'Images' with a capital I and place the hero-image.png inside the created folder.
Heights are really tricky in CSS. I suggest you use a framework like Bootstrap or Foundation.
It doesnt know 50% of what, you need to declare
html, body { height: 100%;}
I know: opinion-based stuff shouldn't be asked etc., but this isn't about opinion, but for now simply about what still exists or rather what will still work today.
My concern: I am looking for a solution to generate one-page pdf files from PHP/HTML pages that get their content from a database and are rather heavily styled with CSS (also including tabular data and images). A function that lets you open or download the PDF when clicking on a link. The PDF should just basically look the same as the corresponding webpage at size A4 (I'll style it that way). As if you choose "preview/save as PDF" in MacOS' printing dialog, but without the user needing any particular software, working on any OS and browser.
I searched SO and the web, and I found a lot of old posts and pages (3 years and much older), like Convert HTML + CSS to PDF with PHP? , Generate PDF report from php and Generate PDF from HTML PHP I can't see in these posts if any of this is still up-to-date / working.
So I'd have to download all that stuff and build it into my pages, maybe only find out that it doesn't work anymore or isn't really applicable for my situation.
Could people who have experience with that kind of stuff please point me to places where I can find scripts/libraries which are able to do this and work with PHP 5.6 and 7? It doesn't have to support CSS3, I can restrict these pages to CSS2, and although I am using webfonts on that website, I can get along without them for the PDFs. Possibly for free, but also a not-too-expensive commercial solution would be okay. I'd be very grateful for any help.
You can use the mpdf library. It's very easy to learn. Here is the sample code.
It works perfectly.
You can get value from another page, using post method also. Your choice.
<?php $student_id = $_GET['student_id']; ?>
<?php
include("mpdf/mpdf.php");
$html .= "
<html>
<head>
<style>
body {font-family: sans-serif;
font-size: 10pt;
background-image: url(\"images/ok.jpg\");
background-repeat: no-repeat;
padding-top:10pt;
margin-top: 100px;
padding-top: 50px;
}
td { vertical-align: top;
border-left: 0.6mm solid #000000;
border-right: 0.6mm solid #000000;
align: center;
}
p.student_id{
padding-left : 140px;
padding-top : -27px;
}
</style>
</head>
<body>
<!--mpdf
<p class=\"student_id\">$student_id</p>
<sethtmlpageheader name='myheader' value='on' show-this-page='1' />
<sethtmlpagefooter name='myfooter' value='on' />
mpdf-->
</body>
</html>
";
$mpdf=new mPDF();
$mpdf->WriteHTML($html);
$mpdf->SetDisplayMode('fullpage');
$mpdf->Output();
?>
I have this PHP file that can 'create' course certificates with custom names passed through $_GET.
The goal is to get the file output into any printable format and download all of the certificates in one (.zip) file.
The problem is that the name's width are dynamic, and the name must match div width.
This is a sample code:
<html>
<head>
</head>
<body style="background-image: image; background-image-size: 100% 100%; width: 1200px; height: 1200px;">
<div class="name_1" style="width: 250px; height: 80px; margin-top: 400px; margin-left: 500px;">
<p><?php echo $_GET['name_1']; ?></p>
</div>
<div class="name_2" style="width: 250px; height: 80px; margin-top: 900px; margin-left: 500px;">
<p><?php echo $_GET['name_2']; ?></p>
</div>
</body>
I have achieved this dynamic text resizing to fit div width with jQuery.
The big problem is that I need to load page by page for 100+ pages to get this dynamic text re-sizing...
So, is there any way of re-sizing all the pages names and download all of them in one click?
Grab the page screenshot(s) using wkhtmltopdf framework, documentation here. It will execute the script on page load, you even have parameter to prolong time for script execution.
--javascript-delay (default to 200ms)
You have a PHP interface, but you can simply use PHP exec this way:
exec("wkhtmltopdf test.html output.pdf")
For creating ZIP libraries, you can find examples here.
FPDF and its derivatives have GetStringWidth() method. If you use the right font, you can get it from this method. A font must be selected using SetFont() before calling this method. There is a set of standard fonts included (Arial, Times, Courier, Symbol and ZapfDingbats), if yours is not one of them, you have to add it: http://www.fpdf.org/en/tutorial/tuto7.htm
$string = "This is a text";
$fpdf = new FPDF();
$pdf->SetFont('Arial','B',16);
echo $fpdf->GetStringWidth($string);
I am looking for something that would allow me to render an uploaded image with a 3D perspective and a wrap effect like here.
This will be in the form of a cropping preview using a jQuery library such as jCrop
Currently I was able to achieve the 3D perspective using Reflex.js but looking for a more subtle solution with the wrapping effect as well.
Any help will be appreciated :)
Thanks in advance!
Your requirement of IE9 support basically mandates a canvas approach if you want to keep it client-side. You could of course do the rendering server-side and AJAX load the rendered image back in which will work in every browser.
If you decide that you can dump IE versions less than 10 (or at least just show them the normal photo without the transform then you can do the wrap-around effect with a combination of CSS 3D Transforms and CSS2 clip. Something like:
<!DOCTYPE html>
<style>
body { margin: 100px; position: relative; }
.edge { width: 20px; height: 196px; background-size: auto 100%; position: absolute; left: 30px; top: 2px; transform: perspective(600px) rotateY(-45deg); transform-origin: right; }
.panel { position: absolute; left: 31px; top: 0; clip: rect(auto,auto,auto,20px); }
.panel>img { width: 350px; height: 200px; transform: perspective(600px) rotateY(30deg); transform-origin: left; }
</style>
<div class="edge" style="background-image: url(my_image.jpg)"></div>
<div class="panel"><img src="my_image.jpg" /></div>
To break that down, we’ve loaded the user’s image and dropped it into the page, along with a div with the same image set as a background. That div is set to be a thin width and a height that’s almost as tall as the main image. We can use the background-size property to foce the background image to fit the div even if it’s taller.
We then absolutely position those two so that they’re next to each-other. The CSS2 clip property lets us clip off the left 20px of the image so that at this point the div and img look like one image together.
Finally, we set a perspective and transform-origin for each block and rotate them away from each-other around the Y axis. Because of the clipping we have to fudge the .edge block to be slightly smaller than originally (with a 200px tall image I had to drop it to 196px to look good) but that works pretty nicely for me.
Obviously you’d need to fill in the vendor prefixes (-moz-, -ms-, -o-, -webkit) and I’ll leave the shadow as an exercise for the reader (a simple background on the container would probably do).
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; }