directResize

This is a user-contributed Extra. If you find issues or would like more info or help, please contact the author.

DirectResize is a fully customizable plugin with a number of functions like: automatic thumbnails creation, watermarking (text or transparent PNG), using config files to set plugin parameters, big images openning with AJAX (lightbox, slimbox, highslide…), fully templateable output, thumbnails for WYSIWYG-editor etc…

Features

  • Possible to integrate any javascript display mode: Slidebox, Lightbox v2.0, Slimbox, Highslide etc

  • Watermarking (text or transparent PNG)

  • Plugin settings in the config file with a big number of plugin parameters

  • Fully templateable output

  • Using plugin to show a remote images

  • Special preview for WYSIWYG-editor (tested with TinyMCE)

  • Creation of thumbnails with cropping

  • New images will be generated if it is needed, in other cases they will be taken from the cache

  • Support for JPG and PNG files (GIF is not currently supported)

How it works

First of all this plugin is intended for using with the WYSIWYG-editor and the target audience of plugin users is the clients who doesn't have any knowledges in web-development and HTML and who needs to use images in the text with thumbnails. It would be rather uneasy to explain such man that firstly it is necessary to create the reduced copy of the image, then to insert it into the document through the WYSIWYG-editor and after it to make a hyperlink to the big image.

So the actions have been simpified to the minimum - when the big image is inserted to the text and the sizes of the thumbnail are established the plugin will create automatically the thumbnail with needed hyperlinks.

Also while the opening of a document that has such images the thumbnails will be displayed with a special watermark in the WYSIWYG-editor instead of the big images. This watermark speaks conditionally that the given image is not small image only but it is a hyperlink to the big image and it allows to tell the difference between such images and the really small images that can be in the document.

If the sizes of the thumbnails is changed then in the next using of the plugin will be created new thumbnails in compliance with new sizes.

Of course you can use the plugin without the WYSIWYG-editor simply when you insert the image as HTML-code and point the attributes "width" and "height" that are smaller than the real sizes.

Installation

  • Extract the contents of the zip file to your computer

  • FTP to your server an go to the Evo installation folder

  • Put the extracted assets folder to the site root and the files will go to correct place

  • Make the assets/drgalleries/ folder writable (CHMOD 777 unless you are in phpSuExec environment, in that case CHMOD 755)

  • Close your FTP program and go to the Evo admin interface

  • Create new plugin called DirecrResize and paste the contents of directResize.plugin.txt to it

  • Copy and Paste the following into "Plugin configuration" on the Configuration tab

    &config=Configuration;string;highslide &clearCache=Cache clear mode;list;0,1,2;0
  • On the "System event" tab check OnWebPagePrerender, OnCacheUpdate, OnBeforeDocFormSave, OnDocFormPrerender
  • Save

Plugin configuration

There are two parameters on the tab "Configuration" of the plugin settings page. The parameter "Configuration" is the name of used configuration. The file with the same name and the suffix ".config.php" should be placed in the plugin folder "configs". This parameter and the related file are mandatory.

"Cache clear mode" option. Plugin cache is cleared when the system cache is cleared.

  • 0 - clearing is off
  • 1- clear cache only for edited document when saving
  • 2- clear cache for all documents

Updating the cache is required in rare cases. For example, when needed to delete image files referred to in the documents no longer exist. Or when changing watermark. New images are generated only if changes in their size. Therefore, new watermarks are not marked because the size of the images have not changed. In this case, the cache is required to update to remove images and generate them again.

In other cases, the plugin generates new images without the need to update the cache. So, in most cases, better to set Cache clear mode = 0

Standard configuration

Plugin already has a set of several standard configurations that allow used the effects slimbox, slidebox, lightbox, highslide on the site without any configuration. To connect one of the configurations, it is necessary to set the configuration name in the field Configuration on the configuration tab of the plugin. Possible values:

  • slimbox
  • slidebox
  • lightboxv2
  • highslide

Additional configuration is in the config files in "assets/plugins/directresize/configs" folder. Look for highslide.config.php as example. Be sure to customize the list of folders in which images are allowed to proccesed by the plugin. Default folder for images is assets/images.

Plugin uses the same js-libraries as Maxigallery, but from own folder, so if you use Maxigallery on your site with the same effect of opening images as DirectResize, use parameter $maxigallery_jscss_packs to avoid re-connect libraries.

Quick start

  1. Install the plugin (see installation and plugin configuration above), make sure that there is drgalleries subfolder in assets folder with write permissions.

  2. Set one of the standart configuration in plugin configuration tab - slimbox, slidebox, lightboxv2, highslide

  3. Make sure that the source image files are located in a folder assets/images or its subfolders

  4. To force the plug to create thumbs and open images with selected effect, it's mandatory to set width and/or height for img tags equal width and height of thumbnail. I.e. for image

    <img src="assets/images/image.jpg" width="120" height="60" />

    will be genereated thumbnail with sizes 120х60. Naturally, the original image.jpg must exceed 120х60 size (otherwise there is no point in creating preview).

Parameters

Parameters to used in the config file. The file must be placed in the "/assets/plugins/directresize/configs" folder with name "ConfigName.config.php", where ConfigName is a string from "Configuration" field on the configuration tab of the plugin.

Parameter Possible values Default value Description, example
$lightbox_mode
  • 1
  • 2
1 Mode of creation of big images and lightbox-links
  • 1 - big image and lightbox-link to this image are created only if original image has drlightbox label (about labels read more below)
  • 2 - big image and lightbox-link are created always (if it hasn't any other conditions)
Despite of the value of parameter $lightbox_modeif it hasn't any other conditions the thumbnails of images will create using all configured action for the thumbnails (overlaying water mark, cropping, etc.)
$allow_from "assets/images" A comma-separated list of folders where it is allowed to use the plugin. It is possible to specify a remote resources. All paths that is not specified in this parameter prohibited. Only relative path from site root or remote path with http:// allowed.
This parameter is not considered if $lightbox_mode = 1
$deny_from A comma-separated list of folders where it is not allowed to use the plugin. It is possible to specify a remote resources. All paths that is not specified in this parameter allowed. Only relative path from site root or remote path with http:// allowed. It is ignored if there is the parameter $allow_from.
This parameter is not considered if $lightbox_mode = 1
$allow_from_allremote
  • 0
  • 1
0 This parameter allowed to use plugin on all images from remote sources w/o needed to list them all in $allow_from
$resize_method
  • 0
  • 1
  • 2
  • 3
3 Method of image resizing. It is used while generating thumbnails. In all cases proportions of the image will be saved. imgWidth and imgHeight are parameters of the original image.
  • 0 - firstly image is reduced, then it is cropped to fit in the rectangle imgWidth х imgHeight
  • 1 - The height is calculated automatically from given width
  • 2 - The width is calculated automatically from given height.
  • 3 - The image is reduced so as not to exceed given imgWidth and imgHeight
$big_quality integer 1-100 80 JPG-quality of big image
$thumb_quality integer 1-100 80 JPG-quality of thumbnails
$wysiwyg_quality integer 1-100 40 JPG-quality of thumbnails in the WYSIWYG editor
$big_width integer 800 If the size of original image exceeds given sizes $big_width or $big_height it will generate image that is proportionally reduced from the original image ("big image" in the plugin terminology) with width and height that are not exceeded $big_width and $big_height.
$big_height integer 600
$thumb_default_width integer Default width of thumbnail
$thumb_default_height integer Default height of thumbnail
$thumb_default_sizemode
  • 0
  • 1
  • 2
  • 3
  • 4
1 The rule for using width and height of thumbnails by default.
  • 0 - Default width and height are not used
  • 1 - Width and height of thumbnail are became equal default width and height ($thumb_default_width and $thumb_default_height) if it is not specified neither height nor width of the original image.
  • 2 - Width of thumbnail are became equal default width, if it is not specified width of the original image.
  • 3 - Height of thumbnail became equal default height if it is not specified height of the original image
  • 4 - Width and height of thumbnail forcibly are became equal default width and default height independent of it is specified or not in the original image.

Notice: despite of the parameters $thumb_default_width, $thumb_default_height and $thumb_default_sizemodethe final sizes of generated thumbnail will calculate depending on $resize_method

If you are using force mode (4) together with TinyMCE, width and height of source images in content will be replaced with $thumb_default_width and $thumb_default_height, original with and heigh will be lost after saving document. Its needed for correct displaying of thumbnails in visual mode.

$remote_refresh_time integer 60 Time in minutes. This is a frequency of image checking on the remote servers. If image is changed (it checks height and width only) then it will create a new local copy of image and regenerate thumbnails.
$tpl
  • Chunk name
  • @FILE:<path to the file>
  • @CODE:<HTML code of template >
assets/plugins/ directresize/templates/ lightboxv2.html Output template
$language
  • english
  • russian
english It sets the plugin language. The corresponding language file should be placed in the folder "lang" of plugin.
$header HTML-code HTML-code that will be placed in the <head> section. It includes necessary css and js files. It uses only on the web pages that have at least one plugin-processed image.
$maxigallery_jscss_packs
  • slimbox
  • slidebox
  • lightboxv2

It includes necessary css and js files to the web page for corresponding script from the folder of MaxiGallery snippet (it is not necessarily to install this snippet but it's files should be placed in the folder assets/snippets/maxigallery).

It is useful if you are using this plugin with Maxigallery in the same project. If any js or css files are attached already by MG, DirectResize won't include these files again in the <head> section.

Here are the parameters taken from Maxigallery having the same meaning and processed in the same way.

Parameter Possible values Default value Description
$use_ftp_commands
  • 0
  • 1
0 If enabled, DirectResize uses PHP FTP commands to create filesystem folders for the gallery pictures. This is needed in certain server environments.
$ftp_server FTP address FTP address to the server running Evo.
$ftp_user username FTP account username
$ftp_pass password FTP account password
$ftp_base_dir path Path to go from FTP root to Evo installation root. Eg. if your FTP root directory is /home/username/ and Evo is installed in /home/username/public_html/Evo/ you would use /public_html/Evo/ as ftp_base_dir.
$ftp_port number 21 Port number for the FTP service.
$thumb_use_watermark
  • 0
  • 1

0

Watermark the thumbnail images.
$thumb_watermark_font
  • 1
  • 2
  • 3
  • 4
  • 5
1 Font size of the watermark text
$thumb_watermark_halign
  • left
  • center
  • right
right Horizontal alignment of the watermark.
$thumb_watermark_img path assets/plugins/ directresize/ images/watermark.png Path to a watermark image. Use a png image with a transparent background alpha layer.
$thumb_watermark_txt text Copyright <YEAR> Text that will be applied to the images as a watermark.
$thumb_watermark_txt_color RGB Hexadecimal FFFFFF Color of the watermark text.
$thumb_watermark_txt_hmargin Number (px) 2 Horizontal margin of the watermark text.
$thumb_watermark_txt_vmargin Number (px) 2 Vertical margin of the watermark text.
$big_use_watermark
  • 0
  • 1

0

Watermark big images.
$big_watermark_font
  • 1
  • 2
  • 3
  • 4
  • 5
1 Font size of the watermark text
$big_watermark_halign
  • left
  • center
  • right
right Horizontal alignment of the watermark.
$big_watermark_img path assets/plugins/directresize/ images/watermark.png Path to a watermark image. Use a png image with a transparent background alpha layer.
$big_watermark_txt text Copyright <YEAR> Text that will be applied to the images as a watermark.
$big_watermark_txt_color RGB Hexadecimal FFFFFF Color of the watermark text.
$big_watermark_txt_hmargin Number (px) 2 Horizontal margin of the watermark text.
$big_watermark_txt_vmargin Number (px) 2 Vertical margin of the watermark text.

Placeholders

Placeholders for use in $tpl template.

Placeholder Description
[+dr.id+] the numeric identifier of the image, unique within the current document
[+dr.alt+]
[+dr.title+]
[+dr.class+]
[+dr.style+]
[+dr.align+]
[+dr.valign+]
attributes alt, title, class, style, align, valign of the original image
[+dr.thumbWidth+] width of the generated thumbnail
[+dr.thumbHeight+] height of the generated thumbnail
[+dr.thumbPath+] path to the generated thumbnail file
[+dr.thumbFilesize+] formatted size of the generated thumbnail file
[+dr.bigWidth+] width of the generated big image (if big image is not generated - width of the original image)
[+dr.bigHeight+] height of the generated big image (if big image is not generated - height of the original image)
[+dr.bigPath+] path to the generated big image file (if big image is not generated - path to the original image file )
[+dr.bigFilesize+] formatted size of the generated big image file (if big image is not generated - formatted size of the original image file)
[+dr.originalWidth+] width of the original image
[+dr.originalHeight+] height of the original image
[+dr.originalPath+] path to the original image
[+dr.originalFilesize+] formatted size of the original image file
[+dr.originalFilename+] filename of the original image

Labels

Label - in terminology of this plugin it is a special word (or part of word) that may use within the img tag at any place - within attributes class, alt, title and so on and it manages some actions with given image (and with it only).

For example, if the value of parameter $lightbox_mode = 1 then the thumbnail with lightbox-link generates only for image with drlightbox label.

Examples of images with drlightbox label:

  • <img src="image.jpg" alt="drlightbox" />
  • <img src="image.jpg" class = "drlightbox_align_left" />
  • <img src="image.jpg" title = "drlightbox picture" />
  • <img src="image.jpg" style = "background: url(drlightbox_bg.gif);" />
  • <img src="assets/images/mydrlightboxpicture.jpg" />
  • and even <img src="image.jpg" drlightbox />

Don't worry about validation errors in html code if you are used labels in unallowed places. All labels will be removed from output html. So avoid to name the image files with label names - filename or part of the filename can be replaced. Warning:don't use labels outside the attributes (as in last example) if you are using WYSIWYG-editor, because labels will be removed by an editor as incorrect html-code.

Label drthumbonly. It makes sense if only parameter $lightbox_mode = 2 and it shows that plugin should not generate big image and lightbox-link for the given image but thumbnail only.

If the value of parameter $lightbox_mode = 1 plugin generates the thumbnails without lightbox-link for all images, so using of drthumbonly is redundant in that case.

Label drskip. Plugin is skip processing of the image. Thumbs and lightbox link is not created.

Known issues

I don't know simple way in PHP < 5.0 to check is the file is exist on the remote host, so if you are useing plugin with remote images and remote image with current path is no exist on remote server - there will be a php error.

Special thanks

This version of the plugin is based on idea and developments of Arnaud, the author of previous versions of the DirectResize.

Plugin is using parts of code from Maxigallery snippet by doze. This document is using part of the documentation from Maxigallery.

Plugin is using Chunkie class and PHx parser by bS

Plugin is using Thumbnail and Watermark Class by Emilio Rodriguez

As example is used Highslide JS script by Torstein Honsi

The biggest part of this document was translated in to english by Igor from the Russian Evo Community

Thanks, guys!

Metaller (metaller.ru@gmail.com)

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