[xwiki-devs] Photo Album Application for GSOC 2011

Hi, I have identified following task list. *File Uploading Part -* Allow upload of Zip files and Extracting image files from zip archive (java.util.zip package). //use storage implementation accordingly - filesystem or database. //image compression can be done by using java image io api. As Marius said there is only resizing capability available in xwiki and jpeg with quality near to 60% are optimum for web display, so compression can be used. *Extracting EXIF information from image files.* (This information can be stored in a separate db table. I found this http://www.drewnoakes.com/drewnoakes.com/code/exif/. It's a java metadata extractor library for jpeg image files. ) Tags - allowing *tagging of attachments*. We can have a separate column of tags in the attachment_content table where different tags can be stored (separeted via pipeline). WDYT? Comments - associating *comments with an attachment*. As I have no idea how comments are stored so can't say anything about it right now. Designing and Implementing *Browsing Interface and Album/Photo manipulation interface* Browsing Interface - interface that allows users to browse albums easily thumbnail view and slide show browse based on some metadata info like author or location Album manipulation interface Add Photos Delete Photos Managing manipulation rights for the album Editing basic info about Album Photo Manipulation Interface Using canvas element - manipulate rotation, opacity, cropping, adjusting gamma, contrast, brightness etc Editing basic info about Photo Currently I am working on gsoc proposal and basic drafts of album browsing interface. Is this task list ok? Further, I am thinking that I should start with Browsing Interface, then after that file uploading part and EXIF information extraction will be implemented. What do you say? (I need it for describing project plan and timeline in gsoc proposal). Looking for your feedback. Thanks Shweta Agrawal On Mon, Apr 4, 2011 at 8:05 PM, Ecaterina Moraru (Valica) &lt;valicac(a)gmail.com Hi, > > > On Sat, Apr 2, 2011 at 14:03, shweta agrawal &lt;shweta.9996(a)gmail.com&gt;wrote;wrote: > > Hi, >> >> >> I have checked out the HTML 5 specifications for geo-location api, file >> uploading api and canvas container. >> >> At present, all the attachments are stored in database irrespective of >> their nature (the old photo album also uses db to store images). I browsed >> to find out which is better for storing image files - database or file >> system and found that most of the posts favored filesystem (in case of large >> number of images). I need your suggestion regarding which one is better in >> xwiki's context. In case of using filesystem for storing image files, >> migration of older version photo albums will be complicated as image files >> will need to be imported from database to file system. >> > Right now from what I know attachments are stored in the database. Caleb is > working on a new storage that will use the filesystem. So IMO you don't have > to worry about this aspect and also it will not be very relevant for this > project (you will only have to use the storage, not implement it). See > http://markmail.org/thread/pl7v4sew2ujksrvv > > >> Secondly, most of the online photo album application (flickr, picasa web >> album, facebook) uses image compression for rendering images fastly on >> slower networks, so do we also intend to use some compression algorithm and >> optimize the image files for display on web. (xwiki can have something of >> this sort that is if image size is more than some threshold value (say 1 Mb >> or 512 kb) then it can be stored as a compressed image). I haven't checked >> out which algorithms are used and does there exist any library or API for >> image compression, so can't say how much time it will take to implement. >> >> I think we already have some image compression on the server side. Marius > can give more information about this. See > http://markmail.org/thread/kbazwdlgmrlsllcv > > >> what about sharing photo album only with a specific group not all users >> and also having manipulating rights to some users only (unlike the old photo >> album application, any registered user can add or delete photos created by >> some other user)? >> >> >> This won't be a problem either. If the application is located at space > level and let's say albums are identified at page level, then you can easily > play with the rights system and give permissions just to a group or user, > etc. See > http://platform.xwiki.org/xwiki/bin/view/Features/RightsManagement > > Thanks, > Caty > > >> Thanks >> Shweta Agrawal >> >> >> On Tue, Mar 29, 2011 at 2:35 AM, Ecaterina Moraru (Valica) < >> valicac(a)gmail.com>> >> >>> >>> On Mon, Mar 28, 2011 at 16:38, shweta agrawal &lt;shweta.9996(a)gmail.com&gt;wrote;wrote: >>> >>> Hi, >>>> >>>> I am Shweta Agrawal, final year computer science student at IIT Roorkee, >>>> India. I want to apply for GSoC this year and am interested in working >>>> on >>>> Photo Album Application. I have four year experience in web development >>>> and >>>> have good understanding of HTML, CSS, Php, python and Javascript. I have >>>> worked on creating user interfaces for a couple of websites and >>>> developed >>>> applications like online music player (similar to grooveshark), online >>>> notice board etc for my Institute's intranet. >>>> >>>> As far as I understand the project, it's aimed at developing an >>>> application >>>> where users can >>>> >>>> - upload the photos (one by one or zip files or folders) with >>>> information like date, caption, location etc.- this info can be >>>> extracted by >>>> reading exif information. *additional* - multiple file selection and >>>> upload, drag and drop functionality (supported by HTML 5 compliant >>>> browsers). ** *doubt* that do we intend to create a default album for >>>> all >>>> the images uploaded/attached by user on any of the pages i.e. not only >>>> the >>>> images that are uploaded for some album. It will provide user an easy >>>> way to >>>> manipulate and browse through all uploaded image files. >>>> >>>> the intent is to have albums. This means the user specifies the desired >>> photos he wants to add to his album. >>> About your idea: to have an album with all the images uploaded by user: >>> this is already accessible if you go to Main/AllDocs?view=attachments and >>> filter the user. >>> >>> >>>> - create albums and add information like title, caption, description >>>> and >>>> location. *doubt* - will there be any limit on maximum number of >>>> photographs in an album? >>>> >>>> we don't have any limit on the number of attachments we add to a page, >>> so we shouldn't have a limit here either. >>> >>> >>>> - browse through the uploaded photographs (available in browsers not >>>> having javascript - It can be done using css3). >>>> >>> we recently have something like >>> http://extensions.xwiki.org/xwiki/bin/view/Extension/Gallery+Macro >>> and >>> >>> http://extensions.xwiki.org/xwiki/bin/view/Extension/Attachment+Selector+Ma… >>> to give you some example of extensions that handle attachment viewers. >>> >>> >>>> - view as thumbnails and slideshow (with adjustable timer and with >>>> manual browsing). >>>> >>>> >>>> - migration tool from the old version photo albums. *doubt* - what >>>> does >>>> old version photo albums refer to? >>>> >>> This is the very old Photo album application that we want to replace. >>> >>> http://extensions.xwiki.org/xwiki/bin/view/Extension/Photo+Album+Application >>> >>> >>>> - ability to tag and associate comments with attachments. *doubt* - >>>> does >>>> attachments here refers to image files only or any type of files. >>>> >>> for the purpose of this project refers to images, but this should be >>> extensible so we could comment on any type of files. >>> >>> >>>> I have browsed through the code of older photo album application. I >>>> need >>>> guidance that is how should I start working on this application? I am >>>> thinking about starting with uploading part. >>>> >>>> Learn a bit XWiki structure and the way applications and extensions are >>> done, integrated and reused. >>> You can find lots of applications at >>> http://extensions.xwiki.org/xwiki/bin/view/Main/ >>> You can play with them, see also the source code, etc. >>> >>> The specifications for this project are very oriented towards the HTML5 >>> standard so you should check that out too. >>> >>> Thanks, >>> Caty >>> >>> >>>> Looking forward to your feedback. >>>> >>>> Regards >>>> >>>> Shweta Agrawal >>>> B.Tech IV YR CSE >>>> IIT Roorkee >>>> _______________________________________________ >>>> devs mailing list >>>> devs(a)xwiki.org >>>> http://lists.xwiki.org/mailman/listinfo/devs >>>> >>> >>> >> >