July 2007 - ntg-context - NTG Mailing Lists

Putting sections into boxes
by Oliver Buerschaper 17 Jul '07

17 Jul '07

Dear all, I'd like to highlight entire (sub)sections (which don't cross page boundaries but only columns) with a MetaPost background ... e.g. I have a heading, some paragraphs, a display formula, an unordered list and the like and this should be "boxed". Do you know how to do this? Thanks for your help, Oliver

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Symmetrical layer positioning?
by Giuseppe Bilotta 17 Jul '07

17 Jul '07

Hello all, is there a "secret power switch" to tell ConTeXt that a particular layer has different positioning depending on wether it's on a left or right page? I can of course do it manually, either by changing the layer position on each page or by using two layers instead of one, but I wanted to know if there was a more straightforward way that I was missing. -- Giuseppe "Oblomov" Bilotta

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endnotes
by Horacio Suarez 17 Jul '07

17 Jul '07

hello: I have a problem with endnotes. I use \placefootnotes at the end of each chapter. When the last page of a chapter is almost empty, the footnotes are placed at the same page, but when the las page of a chapter is almost full, the notes jumps to a new page. Also, I have a \stopcolumns before the notes. How can I force the notes to keep in the same page? Thankyou. -------------------- Horacio Suarez Editotrial Antropofagia www.eantropofagia.com.ar _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

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Columns and colour background
by Oliver Buerschaper 16 Jul '07

16 Jul '07

Dear folks, consider this: --- \setupcolors [state=start] \setupcolumns [background=color, backgroundcolor=red] \starttext \startcolumns[n=2] \dorecurse{4}{\input tufte} \stopcolumns \framed[background=color,backgroundcolor=red]{Test} \stoptext --- Shouldn't the background of my columns be painted red? According to the manual \setupcolumns inherits from \setupframed which does work ... Oliver

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Html to Context using Wiki + hpricot
by Saji Njarackalazhikam Hameed 16 Jul '07

16 Jul '07

Hello All, I wanted to share my recent experience in co-ordinated document development. In our office we have to make annual reports, each part of which is contributed by a member. Previously everybody wrote 'Word' documents which was compiled into a larger report. Recently we had the idea to use a Wiki to ease the pain out of this process and to make it enjoyable for everyone involved. After looking around various wiki software we decided to install a brand-new one called Informl (http://informl.folklogic.net) . One nice feature about this is that in the edit mode twin windows are used, one for input and the other a realtime preview window. Anyway this approach could work with any Wiki software. One motivation behind using a Wiki as front-end was to involve people who new nothing about Tex or Context. Secondly it allowed any person to participate in the process from anywhere. Next we used the ruby library hpricot to retrieve the web document and filter it into a context document. This step was interesting and I would like to sharing the code with anybody interested. I am a novice Ruby programmer, so the code may be far from perfect .. nevertheless. saji %---------------------------------------------------------------- scan_page.rb = Retrieves the html page of interest from the server, navigates to links within the main page and construct a context document #!/usr/bin/ruby require 'rubygems' require 'open-uri' require 'hpricot' require 'scrape_page' # scans the home page and lists # all the directories and subdirectories doc=Hpricot(open("http://190.1.1.24:3010/AnnRep07")) mainfil="annrep.tex" `rm #{mainfil}` fil=File.new(mainfil,"a") fil.write "\\input context_styles \n" fil.write "\\starttext \n" fil.write "\\leftaligned{\\BigFontOne Contents} \n" fil.write "\\vfill \n" fil.write "{ \\switchtobodyfont[10pt] " fil.write "\\startcolumns[n=2,balance=no,rule=off,option=background,frame=off,background=color,backgroundcolor=blue:1] \n" fil.write "\\placecontent \n" fil.write "\\stopcolumns \n" fil.write "}" chapters= (doc/"p/a.existingWikiWord") # we need to navigate one more level into the web page # let us discover the links for that chapters.each {|ch| chap_link = ch.attributes['href'] # using inner_html we can create subdirectories chap_name = ch.inner_html.gsub(/\s*/,"") chap_name_org = ch.inner_html # We create chapter directories system("mkdir -p #{chap_name}") puts chap_name # if chapter name starts with underscore (_) skip it if chap_name.match(/^\_/) puts chap_name next end fil.write "\\input #{chap_name} \n" chapFil="#{chap_name}.tex" `rm #{chapFil}` cFil=File.new(chapFil,"a") cFil.write "\\chapter{ #{chap_name_org} } \n" # We navigate to sections now doc2=Hpricot(open(chap_link)) sections= (doc2/"p/a.existingWikiWord") sections.each {|sc| sec_link = sc.attributes['href'] sec_name = sc.inner_html.gsub(/\s*/,"") secFil="#{chap_name}/#{sec_name}.tex" `rm #{secFil}` sFil=File.new(secFil,"a") sechFil="#{chap_name}/#{sec_name}.html" `rm #{sechFil}` shFil=File.new(sechFil,"a") # scrape_the_page(sec_link,"#{chap_name}/#{sec_name}") scrape_the_page(sec_link,sFil,shFil) cFil.write "\\input #{chap_name}/#{sec_name} \n" } } fil.write "\\stoptext \n" %---------------------------------------------------------------- The program calls scrape_page.rb, a function that does most of the filtering Function: scrape_page.rb def scrape_the_page(pagePath,oFile,hFile) items_to_remove = [ "#menus", #menus notice "div.markedup", "div.navigation", "head", #table of contents "hr" ] doc=Hpricot(open(pagePath)) @article = (doc/"#container").each do |content| #remove unnecessary content and edit links items_to_remove.each { |x| (content/x).remove } end # Write HTML content to file hFile.write @article.inner_html # How to replace various syntactic elements using Hpricot # replace p/b element with /f (@article/"p/*/b").each do |pb| pb.swap("{\\bf #{pb.inner_html}}") end # replace p/b element with /bf (@article/"p/b").each do |pb| pb.swap("{\\bf #{pb.inner_html}}") end # replace strong element with /bf (@article/"strong").each do |ps| ps.swap("{\\bf #{ps.inner_html}}") end # replace h1 element with section (@article/"h1").each do |h1| h1.swap("\\section{#{h1.inner_html}}") end # replace h2 element with subsection (@article/"h2").each do |h2| h2.swap("\\subsection{#{h2.inner_html}}") end # replace h3 element with subsection (@article/"h3").each do |h3| h3.swap("\\subsubsection{#{h3.inner_html}}") end # replace h4 element with subsection (@article/"h4").each do |h4| h4.swap("\\subsubsubsection{#{h4.inner_html}}") end # replace h5 element with subsection (@article/"h5").each do |h5| h5.swap("\\subsubsubsubsection{#{h5.inner_html}}") end # replace <pre><code> by equivalent command in context (@article/"pre").each do |pre| pre.swap("\\startcode \n #{pre.at("code").inner_html} \n \\stopcode") end # when we encounter a reference to a figure inside the html # we replace it with a ConTeXt reference (@article/"a").each do |a| a.swap("\\in[#{a.inner_html}]") end # remove 'alt' attribute inside <img> element # replace <p><img> by equivalent command in context (@article/"p/img").each do |img| img_attrs=img.attributes['alt'].split(",") # separate the file name from the extension # have to take of file names that have a "." embedded in them img_src=img.attributes['src'].reverse.sub(/\w+\./,"").reverse # puts img_src # see if position of figure is indicated img_pos="force" img_attrs.each do |arr| img_pos=arr.gsub("position=","") if arr.match("position=") end img_attrs.delete("position=#{img_pos}") unless img_pos=="force" # see if the array img_attrs contains an referral key word if img_attrs.first.match(/\w+[=]\w+/) img_id=" " else img_id=img_attrs.first img_attrs.delete_at(0) end if img_pos=="force" if img.attributes['title'] img.swap(" \\placefigure\n [#{img_pos}][#{img_id}] \n {#{img.attributes['title']}} \n {\\externalfigure[#{img_src}][#{img_attrs.join(",")}]} \n ") else img.swap(" \\placefigure\n [#{img_pos}] \n {none} \n {\\externalfigure[#{img_src}][#{img_attrs.join(",")}]} ") end else if img.attributes['title'] img.swap(" \\placefigure\n [#{img_pos}][#{img_id}] \n {#{img.attributes['title']}} \n {\\externalfigure[#{img_src}][#{img_attrs.join(",")}]} \n ") else img.swap(" \\placefigure\n [#{img_pos}] \n {none} \n {\\externalfigure[#{img_src}][#{img_attrs.join(",")}]} \n ") end end end # end of converting inside (@article/"p/img") # why not search for table and if we find caption, keep it ; if not add an empty # Styling options: Here I catch the div element called Col2 and # format the tex document in 2 columns # Tables : placing them # replace <p><img> by equivalent command in context (@article/"table").each do |tab| if tab.at("caption") tab.swap(" \\placetable[split]{#{tab.at("caption").inner_html}}\n {\\bTABLE \n #{tab.inner_html} \\eTABLE} ") else tab.swap(" \\placetable[split]{}\n {\\bTABLE \n #{tab.inner_html} \\eTABLE} \n ") end end # Tables: remove the caption (@article/"caption").each do |cap| cap.swap("\n") end # Now we transfer the syntactically altered html to a string Object # and manipulate that object further newdoc=(a)article.inner_html # remove empty space in the beginning newdoc.gsub!(/^\s+/,"") # remove all elements we don't need. newdoc.gsub!(/^<div.*/,"") newdoc.gsub!(/^<\/div.*/,"") newdoc.gsub!(/^<form.*/,"") newdoc.gsub!(/^<\/form.*/,"") newdoc.gsub!(/<p>/,"\n") newdoc.gsub!(/<\/p>/,"\n") newdoc.gsub!(/<\u>/,"") newdoc.gsub!(/<\/u>/,"") newdoc.gsub!(/<ul>/,"\\startitemize[1]") newdoc.gsub!(/<\/ul>/,"\\stopitemize") newdoc.gsub!(/<ol>/,"\\startitemize[n]") newdoc.gsub!(/<\/ol>/,"\\stopitemize") newdoc.gsub!(/<li>/,"\\item ") newdoc.gsub!(/<\/li>/,"\n") newdoc.gsub!("_","\\_") newdoc.gsub!(/<table>/,"\\bTABLE \n") newdoc.gsub!(/<\/table>/,"\\eTABLE \n") newdoc.gsub!(/<tr>/,"\\bTR ") newdoc.gsub!(/<\/tr>/,"\\eTR ") newdoc.gsub!(/<td>/,"\\bTD ") newdoc.gsub!(/<\/td>/,"\\eTD ") newdoc.gsub!(/<th>/,"\\bTH ") newdoc.gsub!(/<\/th>/,"\\eTH ") newdoc.gsub!(/<center>/,"") newdoc.gsub!(/<\/center>/,"") newdoc.gsub!(/<em>/,"{\\em ") newdoc.gsub!(/<\/em>/,"}") newdoc.gsub!("^","") newdoc.gsub!("\%","\\%") newdoc.gsub!("&","&") newdoc.gsub!("&",'\\\&') newdoc.gsub!("$",'\\$') newdoc.gsub!(/<tbody>/,"\\bTABLEbody \n") newdoc.gsub!(/<\/tbody>/,"\\eTABLEbody \n") # Context does not mind "_" in figures and does not recognize \_, # so i have to catch these and replace \_ with _ # First catch filter=/\/AnnRep07\/Figures\/(\w+\/)*(\w+\\_)*/ if newdoc[filter] newdoc.gsub!(filter) { |fString| fString.gsub("\\_","_") } end # Second catch filter2=/\/AnnRep07\/Figures\/(\w+\/)*\w+[-.]\w+\\_\w+/ if newdoc[filter2] newdoc.gsub!(filter2) { |fString| fString.gsub("\\_","_") } end # Third catch; remove \_ inside [] filter3=/\[\w+\\_\w+\]/ if newdoc[filter3] newdoc.gsub!(filter3) { |fString| puts fString fString.gsub("\\_","_") } end # remove the comment tag, which we used to embed context commands newdoc.gsub!("","") # add full path to the images newdoc.gsub!("\/AnnRep07\/Figures\/","~\/AnnRep07\/Figures\/") newdoc.gsub!(/<\w+\s*\/>/,"") #puts newdoc # open file for output #outfil="#{oFile}.tex" #`rm #{outfil}` #fil=File.new(outfil,"a") #puts "Writing #{oFile}" oFile.write newdoc end # imgProps={} # img_attrs.each do |arr| # imgProps['width']=arr.gsub("width=","") if arr.match("width=") # imgProps['position']=arr.gsub("position=","") if arr.match("position=") # end % ---- End of scrape_page.rb -- Saji N. Hameed APEC Climate Center +82 51 668 7470 National Pension Corporation Busan Building 12F Yeonsan 2-dong, Yeonje-gu, BUSAN 611705 saji(a)apcc21.net KOREA

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how to use a \framed for a hyperlink
by WolfgangZ 16 Jul '07

16 Jul '07

Hello, how can I use a the background of a framed for a hyperlink? I wan't to achive that the area (of a colored box) is handled as link. Many thanks Wolfgang

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extra spacing between verse and chorus
by Vyatcheslav Yatskovsky 16 Jul '07

16 Jul '07

Hello, Please, help me with the following. The \vbox and \bgroup\egroup tags are intend to keep a verse on a page, but they also add extra spacing (an extra line?) between the verse and chorus. How to get rid of it? \definestartstop [verse] [before=\vbox\bgroup\startlines, after=\stoplines\egroup] \definestartstop [chorus] [before=\startnarrower\startlines, after=\stoplines\stopnarrower] \starttext \startverse We all came out to Montreux, On the Lake Geneva shoreline. To make records with a mobile, We didn't have much time. But Frank Zappa and the Mothers, Were at the best place around, But some stupid with a flare gun, Burned the place to the ground. \stopverse \startchorus Smoke on the water, a fire in the sky. Smoke on the water... \stopchorus \stoptext -- Best, Vyatcheslav

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Layers in ConTeXt
by Giuseppe Bilotta 15 Jul '07

15 Jul '07

Hello all, I have a couple of questions concerning the use of layers in ConTeXt. I'm working with Luigi Scarso on a layout which is characterized by some fixed-position elements surrounding the actual main body of text. For the fixed-position elements, I'm using layers. However, my ConTeXt is a little rusty[*], so there are a couple of things which I need hints for. The first one is very simple: is there a way to 'fix' the layer's content "until they change"? I've currently set them as page backgrounds, but their content gets reset on each new page. The second question is slightly more complex: is there a way to add contents to a layer, rather than replacing the current layer content? Something like a macro \addtolayer[layername][hoffset=whatever(optional)]{additional content} Thanks in advance, -- Giuseppe "Oblomov" Bilotta P.S. To prove that it's really me, I'll signal two minor typos in the context source: core-tab.tex:88:%D {inintable, ifsplittables} (first should be ifintable), and page-lyr.tex:81: \c!x=\zeropoint,\c!y=\zeropoint,\c!position=\v!no, page-lyr.tex:87: \c!location=rb,\c!position=\v!no,\c!page=, position=no is set twice in the same setup. [*] I've been out of the loop for a couple of years, the University has sucked up most of my time. I was never too happy with it, and I'm planning on a comeback :D

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additional blank line in starttyping environment
by WolfgangZ 15 Jul '07

15 Jul '07

Hi, I get an extra blank line at the beginning of the starttyping environment. How do I get rid of it? See the huge space top of the line "BYTEORDER M": \setupcolors[state=start] \starttext \startbuffer[1arc] \starttyping BYTEORDER M LAYOUT BIL NROWS 3601 NCOLS 3601 NBANDS 1 NBITS 16 BANDROWBYTES 7202 TOTALROWBYTES 7202 BANDGAPBYTES 0 NODATA -32768 ULXMAP $ULXMAP ULYMAP $ULYMAP XDIM 0.000277777777777778 YDIM 0.000277777777777778 \stoptyping \stopbuffer \framed[width=6cm,frame=off,align=flushleft,background=color,backgroundcolor=red]{\getbuffer[1arc]} \stoptext

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Section marking forgotten on next even page?
by Giuseppe Bilotta 14 Jul '07

14 Jul '07

Hello all, why does \page[even] reset the section marks? Shouldn't this feature be configurable by the user? -- Giuseppe "Oblomov" Bilotta

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