# -*- coding: iso-8859-1 -*-
"""
    MoinMoin - Gallery2 parser

    PURPOSE:
        This parser is used to visualize a couple of images as a thumbnail gallery.
	Optional a description of an image could be added including WikiName.
	On default the image name and it's creation date is shown.

    CALLING SEQUENCE:
      {{{
      #!Gallery2 [columns=columns],[filter=filter],[mode=mode],[show_text=show_text],
                 [show_date=show_date], [show_tools=show_tools],
                 [only_items=only_items],[border_thick=border_thick],[renew=renew]
      * [image1.jpg alias]
      * [image2.jpg alias]
      }}}

    KEYWORD PARAMETERS:
        columns:      number of columns for thumbnails
	filter:       regex to select images
        show_text:    default is 1 description is shown
	              any other means no description
	show_date:    default is 1 date info from exif header if available is shown
                      any other means no description
	show_tools:   default is 1 icon toolbar is show any other disables this
	mode:         default is 1 this means description below the image
	              any other number means description right of image
	only_items:   default is 0 if it is set to 1 only images which are described in listitem are shown
	border_thick: default is 1 this is the thickness in pixeln of the outer frame
	renew:        default is 0 if set to 1 then all selected thumbnails_* and webnails_* removed.
	              Afterwards they are new created.

    INPUTS:
	itemlist : if it is used and only_items is 1 then only the images in this list are ahown.
	           The alias text is used as description of the image instead of the file name


    EXAMPLE:

    = GalleryTest =

    == all images shown, one is decribed ==
    {{{
    { { {
    #!Gallery2
    * [100_1185.JPG Bremen, SpaceCenter]
    } } }
    }}}

    Result: [[BR]]
    {{{
    #!Gallery2
    * [100_1185.JPG Bremen, SpaceCenter]
    }}}

    == only_items by two columns and text right ==
    {{{
    { { {
    #!Gallery2 mode=2,columns=2,only_items=1
    * [100_1185.JPG Bremen, SpaceCenter]
    * [100_1194.JPG Bremen]
    } } }
    }}}

    Result: [[BR]]
    {{{
    #!Gallery2 mode=2,columns=2,only_items=1
    * [100_1185.JPG Bremen, SpaceCenter]
    * [100_1194.JPG Bremen, behind SpaceCenter]
    }}}

    == only_items by two columns, date supressed ==
    {{{
    { { {
    #!Gallery2 columns=2,only_items=1,show_date=0
    * [100_1185.JPG Bremen, SpaceCenter]
    * [100_1194.JPG Bremen, behind SpaceCenter]
    } } }
    }}}

    Result: [[BR]]
    {{{
    #!Gallery2 columns=2,only_items=1,show_date=0
    * [100_1185.JPG Bremen, SpaceCenter]
    * [100_1194.JPG Bremen]
    }}}


    == filter regex used, mode 2, icons and date supressed, one column and border_thick=5 ==
    {{{
    { { {
    #!Gallery2 columns=1,filter=100_118[0-5],mode=2,show_date=0,show_tools=0,border_thick=5
    } } }
    }}}

    Result: [[BR]]
    {{{
    #!Gallery2 columns=1,filter=100_118[0-7],mode=2,show_date=0,show_tools=0,border_thick=5
    }}}

    == other macro calls ==
    {{{
    { { {
    #!Gallery2 only_items=1,show_date=0
    * [100_1189.JPG [[MiniPage(||Bremen||SpaceCenter||\n|| ||SpaceJump||)]]]
    } } }
    }}}

    Result: [[BR]]
    {{{
    #!Gallery2 only_items=1,show_date=0
    * [100_1189.JPG [[MiniPage(||Bremen||SpaceCenter||\n|| ||SpaceJump||)]]]
    }}}

    == renew means always new thumbnails and webnails of selection ==
    {{{
    { { {
    #!Gallery2 only_items=1,show_date=0,show_tools=0,renew=1
    * [100_1189.JPG [[MiniPage(||Bremen||SpaceCenter||\n|| ||SpaceJump||)]]]
    } } }
    }}}

    Result: [[BR]]
    {{{
    #!Gallery2 only_items=1,show_date=0,renew=1
    * [100_1189.JPG [[MiniPage(||Bremen||SpaceCenter||\n|| ||SpaceJump||)]]]
    }}}

    PROCEDURE:
      Download some images to a page and start with the examples.
      Aliasing of the filenames are done by adding an itemlist, see example.

      This routine requires the PIL (Python Imaging Library).
      And the EXIF routine from http://home.cfl.rr.com/genecash/

      At the moment I have added the EXIF routine to the parsers dir.
      It's not the best place but during developing it is nice to have it there
      If you put it to another place you have to change the line
      from MoinMoin.parser import EXIF too.

      Please remove the Version number from the code!

    MODIFICATION HISTORY:
        Version 1.3.3.-1
        @copyright: 2005 by Reimar Bauer (R.Bauer@fz-juelich.de)
        @license: GNU GPL, see COPYING for details.
	2005-03-26: Version 1.3.3-2 keyword renew added
	            creation of thumnails and webnails in two calls splitted
                    Version 1.3.3-3 bug fixed if itemlist is given to describe only some of the images
		                    but only_items is not set to 1
				    Example code changed

"""

from MoinMoin.action import AttachFile
from MoinMoin import wikiutil, config
from MoinMoin.Page import Page
import os,string,re,Image,StringIO
from MoinMoin.parser import EXIF

from MoinMoin.parser import wiki



def get_quotes(self,formatter):
    quotes = self.raw.split('\n')
    quotes = [quote.strip() for quote in quotes]
    quotes = [quote[2:] for quote in quotes if quote.startswith('* ')]

    image=[]
    alias=[]
    for line in quotes:
        im,na=line[1:-1].split(' ',1)

        ##taken from MiniPage

        out=StringIO.StringIO()
        self.request.redirect(out)
        wikiizer = wiki.Parser(na.strip(),self.request)
        wikiizer.format(formatter)
        na=out.getvalue()
        self.request.redirect()
        del out

        alias.append(na)
        image.append(im.strip())

    result={}
    result['alias']=alias
    result['image']=image

    return(result)



class Parser:
    def __init__(self, raw, request, **kw):
        self.raw = raw
        self.request = request
        self.form = request.form
        self._ = request.getText
        self.kw = {}
        self.kw['border_thick']='1'
        self.kw['columns']='4'
        self.kw['filter']='.'
        self.kw['mode']='1'
        self.kw['show_text']='1'
        self.kw['show_date']='1'
        self.kw['show_tools']='1'
        self.kw['only_items']='0'
        self.kw['renew']='0'

        for arg in kw.get('format_args','').split(','):

            if (arg.find('=') > -1):
               key=arg.split('=')
               self.kw[str(key[0])]=wikiutil.escape(string.join(key[1],''), quote=1)


    def format(self, formatter):

        kw=self.kw
        quotes=get_quotes(self,formatter)

        current_pagename=formatter.page.page_name
        attachment_path = AttachFile.getAttachDir(self.request,current_pagename,create=1)

        if (kw['only_items'] == '1'):
            all_files=quotes['image']
        else:
            all_files=os.listdir(attachment_path)

        result=[]

        for test in all_files:
           if re.match(kw['filter'], test):
              result.append(test)

        all_files=result

        if (len(all_files) == 0):
           self.request.write("<BR><BR><H1>No matching image file found!</H1>")
           return


        cells=[]
        big={}
        medium={}
        small={}
        cell_name=[]
        exif_date=[]
        big_image_url=[]

        valid_img=0

        for attfile in all_files:
             # only files not thumb or webnails
            if ((string.find(string.join(attfile,''),'thumbnail_') == -1) and (string.find(string.join(attfile,''),'webnail_') == -1)) :
                # only images
                if wikiutil.isPicture(attfile):

                    file, ext = os.path.splitext(attfile)

                    if (ext == '.gif') or (ext == '.png'):
                        img_type='PNG'
                        thumbfile='thumbnail_'+file+".png"
                        webnail='webnail_'+file+".png"
                    else:
                        img_type="JPEG"
                        thumbfile='thumbnail_'+file+".jpg"
                        webnail='webnail_'+file+".jpg"


                    infile=attachment_path+'/'+attfile
                    f=open(infile, 'rb')
                    tags=EXIF.process_file(f)

                    if tags.has_key('EXIF DateTimeOriginal'):
                         date=str(tags['EXIF DateTimeOriginal'])
                         date=string.replace(date,':','-',2)
                         exif_date.append(date)
                    else:
                        exif_date.append('--')

                    f.close()

                    thumb=attachment_path+'/'+thumbfile
                    webf=attachment_path+'/'+webnail

                    if (kw['renew'] == '1'):
                       if os.path.exists(thumb):
                          os.unlink(thumb)
                       if os.path.exists(webf):
                          os.unlink(webf)

                    valid_img=valid_img+1

                    im = Image.open(infile)
                    if not os.path.exists(webf):
                        im.thumbnail((640,640), Image.ANTIALIAS)
                        im.save(webf, img_type)

                    if not os.path.exists(thumb):
                        im.thumbnail((128, 128), Image.ANTIALIAS)
                        im.save(thumb, img_type)



                    big_image_url.append(AttachFile.getAttachUrl(current_pagename,attfile,self.request))
                    medium['src']=AttachFile.getAttachUrl(current_pagename,webnail,self.request)


                    small['title']=attfile
                    small['alt']=attfile
                    small['src']=AttachFile.getAttachUrl(current_pagename,thumbfile,self.request)


                    image_link=formatter.image(**small)
                    # collect images
                    cells.append(formatter.url(1,medium['src'] )+image_link+formatter.url(0))
                    cell_name.append(attfile)


        ##over all images
        n=len(cells)
        cols=int(kw['columns'])


        rows=n/cols
        first=0
        result=[]

        if (valid_img > 1):
           result.append('<table border="'+kw['border_thick']+'">')

        icon={}
        icon['src']='/wiki/modern/img/idea.png'
        icon['title']='Load Image'

        z=1
        i=0

        ############################################
        ##TODO: syntax change to formatter - later #
        ############################################

        # fixed width because of better visualisation on different browsers
        for line in cells:
            if (z == 1):
               if (valid_img > 1):
                  if (kw['mode']=='1'):
                     result.append(formatter.table_cell(1))
                  else:
                      result.append('<td width="300" >')
            result.append('<table border="1">')
            result.append('<TR valign="top">')
            result.append('<td align="center" width="140">')
            result.append(line)
            result.append(formatter.table_cell(0))
            if (kw['show_text']=='1'):
                if (kw['mode']=='1'):
                  result.append(formatter.table_row(0))
                  result.append(formatter.table_row(1))

                if (kw['mode']=='1'):
                    result.append('<td width="140" >')
                else:
                    result.append('<td width="140" >')

                i_quote=0
                found=0
                for text in quotes['image'] :
                    if (text == cell_name[i]):
                        result.append(quotes['alias'][i_quote])
                        found=1
                    i_quote=i_quote+1

                if (found == 0):
                    result.append(cell_name[i])

                result.append(formatter.table_cell(0))
                if (kw['mode']=='1'):
                    result.append(formatter.table_row(0))


            if (kw['show_date']=='1'):
                if (kw['mode']=='1'):
                    result.append(formatter.table_row(1))
                    result.append(formatter.table_cell(1))
                    result.append(exif_date[i])
                    result.append(formatter.table_cell(0))
                    result.append(formatter.table_row(0))
            if (kw['show_tools'] == '1'):
               result.append(formatter.table_row(1))
               result.append('<td width="140">')
               small=formatter.image(**icon)
               result.append(formatter.url(1,big_image_url[i])+small+formatter.url(0))

            result.append(formatter.table_cell(0))
            if (kw['show_date']=='1'):
                if not (kw['mode']=='1'):
                    result.append(formatter.table_cell(1))
                    result.append(exif_date[i])
                    result.append(formatter.table_cell(0))
            if (kw['show_tools'] == '1'):
               result.append(formatter.table_row(0))
            result.append(formatter.table(0))
            if ((z != cols) and (i < n-1)):
                result.append(formatter.table_cell(1))
            if (z == cols):
                result.append(formatter.table_cell(0))
                result.append(formatter.table_row(0))
            z=z+1
            i=i+1
            if (z > cols):
               z=1
        if (valid_img > 1):
           result.append(formatter.table(0))

        ##Output
        self.request.write(string.join(result,''))
        return()


