Jump to content

Recommended Posts

PDF Fieldtype/Inputfield
 
Module for ProcessWire allowing you to easily generate thumbnails of the PDF files embedded to the site.
 
Current version: 1.1.2 (Changelog)

Module page: http://modules.processwire.com/modules/fieldtype-pdf
Github: https://github.com/uiii/ProcessWire-FieldtypePDF

For detailed instructions see: https://github.com/uiii/ProcessWire-FieldtypePDF/blob/master/README.md

  • Like 22

Share this post


Link to post
Share on other sites

Looks great!

A few suggestions if I may :)

I think you should note somewhere is the requirement for imagemagick, ghostscript, and the imagick extension. Also, do a class_exists check on imagick and fail with a nice error if it isn't available.

Also, you may want to add these lines to your code:

$imagick->setOption("pdf:use-cropbox","true");
$imagick->setColorspace(Imagick::COLORSPACE_RGB);

Also, if you find that the colors in the image are not matching those in the PDF, this gives instructions on the changes that need to be made to your imagemagick delegates file: http://www.lassosoft.com/CMYK-Colour-Matching-with-ImageMagick

Share this post


Link to post
Share on other sites

Great first post! ;)

Just quickly looking and reading. I think instead of creating new class with extending Pagefile you could add a method via hook to Pagefile

$this->addHook("Pagefile::thumbnail", $this, "thumbnail");

public function thumbnail($width, $height) {}

Not sure if that's better at all. Looks all ok, and may better extend with new Class... but just wanted to mention.

  • Like 1

Share this post


Link to post
Share on other sites

Hi, thanks for the replies. :-)
 

I think you should note somewhere is the requirement for imagemagick, ghostscript, and the imagick extension ...

 
 Yes, that's right. When and how is the proper way to print this error?
 

$imagick->setOption("pdf:use-cropbox","true");
$imagick->setColorspace(Imagick::COLORSPACE_RGB);
Also, if you find that the colors in the image are not matching those in the PDF, this gives instructions on the changes that need to be made to your imagemagick delegates file: http://www.lassosoft.com/CMYK-Colour-Matching-with-ImageMagick

 
I haven't much experience with ImageMagick. I've just found somewhere the code snippet of "pdf to image" conversion and use it. What consequences will have these two options? 
 
The "delegate" thing - I think it's not related to the module itself.
 

$this->addHook("Pagefile::thumbnail", $this, "thumbnail");

public function thumbnail($width, $height) {}

Hey, I didn't know that it's so simple :-). If it's better or not I don't know, maybe the class is more suitable for future module's extensions.

  • Like 1

Share this post


Link to post
Share on other sites

You can provide the error like this:

if(!class_exists('Imagick')) {
    $this->error(__("This module requires the php imagick extension, but it is not installed"));
}

You could use this in the install routine of the module.

I am not sure how to check for ghostscript. A hacky way would be to include a tiny PDF with your module and run the thumbnail generator on it. If the thumbnail is created, then it must be available. If not, return another error.

The cropbox setting is important because PDFs can have a crop applied to them and if you don't set this, the thumbnail you generate will show the entire contents of the page, not just what is visible in the PDF.

The colorspace_rgb is just to convert colors to RGB. The IM delegates settings I linked to are not something you can do with the module, but I think they are worth noting in your readme. Without those changes, some colors can turn out pretty fluorescent. Of course many thumbnails will look just fine depending on the colors used.

Just an FYI - I created a similar module a long time ago that I haven't ever got around to finalizing for release:

https://github.com/adrianbj/ProcessPDFImageCreator

The main difference with this one is that it creates large preview images for every page of the PDF and then relies on PW to create the thumbnails as requested from these large images. It's not beautifully coded, but you might find something of interest in there. The reasons I never released were because it can be slow to count the number of pages in a PDF (which I wanted to store) depending on what other libraries are available on the server, and also the generation of images for a document of a couple of hundred pages can take a long time and I never got around to setting up something so that this is done in the background after page save.

  • Like 2

Share this post


Link to post
Share on other sites

Fine, thanks. I'll update the module soon.
 

Just an FYI - I created a similar module a long time ago that I haven't ever got around to finalizing for release:
https://github.com/adrianbj/ProcessPDFImageCreator


Yes, I've found it and got a little inspiration. Originally I wanted to use it, but I don't like it requires exact, properly named fields to work. And conversion of the whole PDF isn't my need, just the first page thumbnail. But based on this a got an idea to add optional parameter to the thumbnail method specifing the page number to convert.

Share this post


Link to post
Share on other sites

Yes, I've found it and got a little inspiration. Originally I wanted to use it, but I don't like it requires exact, properly named fields to work. 

Yeah, I didn't know about how to make a configurable module back then :)

  • Like 1

Share this post


Link to post
Share on other sites

Hi and thanks for this nice module  :)

I'm having a bit of a problem with the thumbnail component of the module.  Sometimes when I create a thumbnail the resize creates extra noise in the image. Sometimes deleting the pdf from the page and re-uploading it removes the noise, so it doesn't seem to be an issue with the file itself. For now I'm working around it by commenting out the line in the module that resizes the image ($imagick->scaleImage($width, $height); from PagePDF.php) and using Image's size function. 

0wA5Ygs.jpg

Any help would be appreciated. 

Thanks

Share this post


Link to post
Share on other sites

Hi, thanks for your report. Sorry, but I don't have enough time now to solve the issue. If you can wait until mid-August I will look at that and try to replace the scale function with the ProcessWire's one.

Share this post


Link to post
Share on other sites

Richard are you still there? Haven't seen any activity on this as I filed couple issues on github some time ago. Thanks :D

Share this post


Link to post
Share on other sites

Hi, I'm still there, but I don't have much time to fix the issues. Sorry. If you find the solution you can create a pull request or make your version of the module. If I find some time a will try to look at that. Once again, sorry.

Share this post


Link to post
Share on other sites

I'm having huge problems with ImageMagick on my local setup.

I get the following error in the backend:

NoDecodeDelegateForThisImageFormat `C:/usr/local/domain.local/public_html/site/assets/files/1037/testfile.pdf' @ error/constitute.c/ReadImage/555

As I understand it, this has something to do with image formats. Doing a var_dump(Imagick::queryFormats()) yields an empty array.

I have the php_imagick.dll extension installed, along with the necessary binaries, all in my System PATH.

The only version that works with my PHP 5.5.11 (installed with XAMPP 1.8.3) is ImageMagick 6.8.8-4 Q16 x86. The Windows installer is the same version. Every other version causes PHP to skip loading the extension.

No errors in php_error_log.

Any ideas?

Update - If I run convert -list configure, I see that there is no pdf delegate listed. How do I install that? And why isn't it included with IM?

Update - seems this has more to do with GhostScript... I've always had it installed, so I don't know where the problem is.

Note - Have also asked on SO here: http://stackoverflow.com/questions/27382843

Share this post


Link to post
Share on other sites

Has anyone a hint how to get this awesome module to work if there is no imagick extension on the server but ImageMagick is available as executable? Could it be possible to write a wrapper for the excution of ImageMagick or am I missing something which is only available by the PHP Modul?


By the way ... I want to use it on a managed server from DomainFactory.

Share this post


Link to post
Share on other sites

You could definitely do this so long as you have exec available for PHP and also have imagemagick compiled with ghostscript. 

If these requirements are met, then something like this should work:

exec('convert -density 600 document.pdf[0] -colorspace RGB -resample 300 output.png');

inside the thumbnails function: https://github.com/uiii/ProcessWire-FieldtypePDF/blob/master/PagePDF.php#L7

Share this post


Link to post
Share on other sites

My shared hosting provider has asked me what the minimum version of GhostScript is for this to work. They also need to know if it should be a PHP module or the standalone binaries (added to PATH, I would assume).

Safe to say latest version and binaries?

Share this post


Link to post
Share on other sites

Hi Mike,

I'm not sure if there is some minimal version of ghostscript needed. I have installed ghostscript 9.15 with imagemagick 6.9.0 and according to phpinfo the php's imagick module is of version 3.1.2. In this configuration everything works fine.

No binaries are executed directly from php, the php's imagick module is used (imagick.so in php.ini), but you must have installed ghostscript and imagemagick as a system package.

Hope this helps you.


BTW: If you are going to use this module on PW 2.5, you will probably get some errors. I'm working on that and hope to finish it this week. PW 2.4 should be ok. 

Share this post


Link to post
Share on other sites

Hi Richard,

Seems right to me. Going to let them know now.

The module worked just fine on my 2.5 install - no problems. What errors have you been getting?

Share this post


Link to post
Share on other sites

Really, so you are lucky :-). There are some issues https://github.com/uiii/ProcessWire-FieldtypePDF/issues. Not all issues are fatal, but needs to fix. I have already fixed all of them but not published yet. I have also changed the API (still backward compatible). The new version isn't ready yet, I need to update the documentation and want to add some tests.

Share this post


Link to post
Share on other sites

Hehe, guess so. I originally used it in a development-site on 2.5.13, and have kept up to date since, now on 2.5.23 (current). The only problems I had (only on production server) were specifically about Imagick and GhostScript.

Will give the update a test when you release it. :-)

Share this post


Link to post
Share on other sites

Hi Richard

So GhostScript was installed on my shared server, but I'm getting this now:

 - PDFDelegateFailed `[ghostscript library 8.70] -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r300x300" -dUseCropBox -dFirstPage=1 -dLastPage=1 "-sOutputFile=/tmp/magick-11484_KMMlcXf5Ras%d" "-f/tmp/magick-11484_ZdfVOglomq7" "-f/tmp/magick-11484jAuPBFSKDl5M"':    **** Warning:  An error occurred while reading an XREF table.
   **** The file has been damaged.  This may have been caused
   **** by a problem while converting or transfering the file.
   **** Ghostscript will attempt to recover the data.
   **** Page has no /MediaBox attribute. Using the current page size.
Error: /stackunderflow in --run--
Operand stack:
   --dict:4/4(L)--   612.0   792.0   3
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   --nostringval--   false   1   %stopped_push   1862   1   3   %oparray_pop   1861   1   3   %oparray_pop   1845   1   3   %oparray_pop   --nostringval--   --nostringval--   2   1   1   --nostringval--   %for_pos_int_continue   --nostringval--   --nostringval--
Dictionary stack:
   --dict:1157/1684(ro)(G)--   --dict:1/20(G)--   --dict:75/200(L)--   --dict:75/200(L)--   --dict:106/127(ro)(G)--   --dict:286/300(ro)(G)--   --dict:23/25(L)--   --dict:2/6(L)--
Current allocation mode is local
GPL Ghostscript 8.70: Unrecoverable error, exit code 1
 @ error/pdf.c/InvokePDFDelegate/271

Have you seen this before?

Update: Seems that the error is only appearing for one PDF file. I'll need to convert it or something to get it to work. Anyways, I also got an error saying "Field "certificate_pdf" is not yet ready to use and needs to be configured." I don't quite understand what needs to be configured...

Update: Just saw this - need to upgrade GS.

Share this post


Link to post
Share on other sites

Hi Mike,

I haven't seen this GS error before. I'm not an expert in Ghostscript nor ImageMagick, I have just go through many internet discussions and found working php code for pdf to image conversion. But as you say, it looks like a GS bug.

I also got an error saying "Field "certificate_pdf" is not yet ready to use and needs to be configured." I don't quite understand what needs to be configured...

This is one of the issues in PW 2.5 as I mentioned earlier. See https://github.com/uiii/ProcessWire-FieldtypePDF/issues/6. If you want, you can temporarily use  somatonic's fork or wait for my upgrade. 

Share this post


Link to post
Share on other sites

Hi Richard

I've asked support to upgrade GS to 9.x.

Would rather wait for your upgrade to come out. The site in questions is in need of some layout changes, so getting this working isn't an urgent matter.

:-)

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Gadgetto
      SnipWire - Snipcart integration for ProcessWire
      Snipcart is a powerful 3rd party, developer-first HTML/JavaScript shopping cart platform. SnipWire is the missing link between Snipcart and the content management framework ProcessWire.
      With SnipWire, you can quickly turn any ProcessWire site into a Snipcart online shop. The SnipWire plugin helps you to get your store up and running in no time. Detailed knowledge of the Snipcart system is not required.
      SnipWire is free and open source licensed under Mozilla Public License 2.0! A lot of work and effort has gone into development. It would be nice if you could donate an amount to support further development:

      Status update links (inside this thread) for SnipWire development
      2020-01-21 -- Snipcart v3 - when will the new cart system be implemented? 2020-01-19 -- integrated taxes provider finished (+ very flexible shipping taxes handling) 2020-01-14 -- new date range picker, discount editor, order notifiactions, order statuses, and more ... 2019-11-15 -- orders filter, order details, download + resend invoices, refunds 2019-10-18 -- list filters, REST API improvements, new docs platform, and more ... 2019-08-08 -- dashboard interface, currency selector, managing Orders, Customers and Products, Added a WireTabs, refinded caching behavior 2019-06-15 -- taxes provider, shop templates update, multiCURL implementation, and more ... 2019-06-02 -- FieldtypeSnipWireTaxSelector 2019-05-25 -- SnipWire will be free and open source Plugin Key Features
      Fast and simple store setup Full integration of the Snipcart dashboard into the ProcessWire backend (no need to leave the ProcessWire admin area) Browse and manage orders, customers, discounts, abandoned carts, and more Process refunds and send customer notifications from within the ProcessWire backend Process Abandoned Carts + sending messages to customers from within the ProcessWire backend Complete Snipcart webhooks integration (all events are hookable via ProcessWire hooks) Integrated taxes provider (which is more flexible then Snipcart own provider) Useful Links
      SnipWire in PW modules directory (alpha version only available via GitHub) SnipWire Docs (please note that the documentation is a work in progress) SnipWire @GitHub (feature requests and suggestions for improvement are welcome - I also accept pull requests) Snipcart Website  
      ---- INITIAL POST FROM 2019-05-25 ----
       
    • By d'Hinnisdaël
      Happy new year, everybody 🥬
      I've been sitting on this Dashboard module I made for a client and finally came around to cleaning it up and releasing it to the wider public. This is how it looks.
      ProcessWire Dashboard

      If anyone is interested in trying this out, please go ahead! I'd love to get some feedback on it. If this proves useful and survives some real-world testing, I'll add this to the module directory.
      Download
      You can find the latest release on Github.
      Documentation
      Check out the documentation to get started. This is where you'll find information about included panel types and configuration options.
      Custom Panels
      My goal was to make it really simple to create custom panels. The easiest way to do that is to use the panel type template and have it render a file in your templates folder. This might be enough for 80% of all use cases. For anything more complex (FormBuilder submissions? Comments? Live chat?), you can add new panel types by creating modules that extend the DashboardPanel base class. Check out the documentation on custom panels or take a look at the HelloWorld panel to get started. I'm happy to merge any user-created modules into the main repo if they might be useful to more than a few people.
       Disclaimer
      This is a pre-release version. Please treat it as such — don't install it on production sites. Just making sure 🍇
      Roadmap
      These are the things I'm looking to implement myself at some point. The wishlist is a lot longer, but those are the 80/20 items that I probably won't regret spending time on.
      Improve documentation & add examples ⚙️ Panel types Google Analytics ⚙️ Add new page  🔥 Drafts 🔥 At a glance / Page counter 404s  Layout options Render multiple tabs per panel panel groups with heading and spacing between ✅ panel wrappers as grid item (e.g. stacked notices) ✅ Admin themes support AdminThemeReno and AdminThemeDefault ✅ Shortcuts panel add a table layout with icon, title & summary ✅ Chart panel add default styles for common chart types ✅ load chart data from JS file (currently passed as PHP array) Collection panel support image columns ✅ add buttons: view all & add new ✅
    • By Robin S
      This module is inspired by and similar to the Template Stubs module. The author of that module has not been active in the PW community for several years now and parts of the code for that module didn't make sense to me, so I decided to create my own module. Auto Template Stubs has only been tested with PhpStorm because that is the IDE that I use.
      Auto Template Stubs
      Automatically creates stub files for templates when fields or fieldgroups are saved.
      Stub files are useful if you are using an IDE (e.g. PhpStorm) that provides code assistance - the stub files let the IDE know what fields exist in each template and what data type each field returns. Depending on your IDE's features you get benefits such as code completion for field names as you type, type inference, inspection, documentation, etc.
      Installation
      Install the Auto Template Stubs module.
      Configuration
      You can change the class name prefix setting in the module config if you like. It's good to use a class name prefix because it reduces the chance that the class name will clash with an existing class name.
      The directory path used to store the stub files is configurable.
      There is a checkbox to manually trigger the regeneration of all stub files if needed.
      Usage
      Add a line near the top of each of your template files to tell your IDE what stub class name to associate with the $page variable within the template file. For example, with the default class name prefix you would add the following line at the top of the home.php template file:
      /** @var tpl_home $page */ Now enjoy code completion, etc, in your IDE.

      Adding data types for non-core Fieldtype modules
      The module includes the data types returned by all the core Fieldtype modules. If you want to add data types returned by one or more non-core Fieldtype modules then you can hook the AutoTemplateStubs::getReturnTypes() method. For example, in /site/ready.php:
      // Add data types for some non-core Fieldtype modules $wire->addHookAfter('AutoTemplateStubs::getReturnTypes', function(HookEvent $event) { $extra_types = [ 'FieldtypeDecimal' => 'string', 'FieldtypeLeafletMapMarker' => 'LeafletMapMarker', 'FieldtypeRepeaterMatrix' => 'RepeaterMatrixPageArray', 'FieldtypeTable' => 'TableRows', ]; $event->return = $event->return + $extra_types; }); Credits
      Inspired by and much credit to the Template Stubs module by mindplay.dk.
       
      https://github.com/Toutouwai/AutoTemplateStubs
      https://modules.processwire.com/modules/auto-template-stubs/
    • By Mike Rockett
      Jumplinks for ProcessWire
      Release: 1.5.60
      Composer: rockett/jumplinks
      ⚠️ NOTICE: 1.5.60 is an important security patch-release for an XSS vulnerability discovered by @phlp. It's HIGHLY RECOMMENDED that all Jumplinks users update to the latest version as soon as possible.
      Jumplinks is an enhanced version of the original ProcessRedirects by Antti Peisa.
      The Process module manages your permanent and temporary redirects (we'll call these "jumplinks" from now on, unless in reference to redirects from another module), useful for when you're migrating over to ProcessWire from another system/platform. Each jumplink supports wildcards, shortening the time needed to create them.
      Unlike similar modules for other platforms, wildcards in Jumplinks are much easier to work with, as Regular Expressions are not fully exposed. Instead, parameters wrapped in curly braces are used - these are described in the documentation.
      Under Development: 2.0, to be powered by FastRoute
      As of version 1.5.0, Jumplinks requires at least ProcessWire 2.6.1 to run.
      View on GitLab
      Download via the Modules Directory
      Read the docs
      Features
      The most prominent features include:
      Basic jumplinks (from one fixed route to another) Parameter-based wildcards with "Smart" equivalents Mapping Collections (for converting ID-based routes to their named-equivalents without the need to create multiple jumplinks) Destination Selectors (for finding and redirecting to pages containing legacy location information) Timed Activation (activate and/or deactivate jumplinks at specific times) 404-Monitor (for creating jumplinks based on 404 hits) Additionally, the following features may come in handy:
      Stale jumplink management Legacy domain support for slow migrations An importer (from CSV or ProcessRedirects) Feedback & Feature Requests
      I’d love to know what you think of this module. Please provide some feedback on the module as a whole, or even regarding smaller things that make it whole. Also, please feel free to submit feature requests and their use-cases.
      Note: Features requested so far have been added to the to-do list, and will be added to 2.0, and not the current dev/master branches.
      Open Source

      Jumplinks is an open-source project, and is free to use. In fact, Jumplinks will always be open-source, and will always remain free to use. Forever. If you would like to support the development of Jumplinks, please consider making a small donation via PayPal.
      Enjoy! 🙂
    • By Robin S
      Add Image URLs
      Allows images/files to be added to Image/File fields by pasting URLs.

      Usage
      Install the Add Image URLs module.
      A "Paste URLs" button will be added to all image and file fields. Use the button to show a textarea where URLs may be pasted, one per line. Images/files are added when the page is saved.
       
      https://github.com/Toutouwai/AddImageUrls
      https://modules.processwire.com/modules/add-image-urls/
×
×
  • Create New...