itextsharp pdf c# : Split pdf by bookmark application software utility azure windows winforms visual studio Build%20Your%20Own%20Web%20Site%20The%20Right%20Way%20Using%20HTML%20&%20CSS%203rd%20Ed25-part782

Setting a Background for Our Navigation
Theevolutionofoursitecontinuesapace!Firstly,whatI’dliketomakelookalittle
prettieristhenavigationarea.TheimageIwanttouseisshowninFigure5.30(and
isavailablefromthecodearchive,ofcourse).
Figure 5.30. Decorative background for the navigation
Iknowwhatyou’rethinking:thisimageisthecorrectwidth,butit’sfartootallfor
ourcurrentnavigationarea.However,thesizeofthenavigationareacaneasilybe
setwithintheCSStomatchtheheightofournewbackgroundimage.Here’sthe
modifiedmarkup:
#navigation {
width: 180px;
height: 484px;
background: #7da5d8 url(backgrounds/nav-bg.jpg) no-repeat;
}
Figure5.31showstheeffectincontext.
Build Your Own Website The Right Way Using HTML & CSS
214
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Figure 5.31. The new-look navigation bar
Applying a Fade to the Tagline
Thetaglineunderthemainheadingperformsitstaskefficiently,butisalittlebasic,
andtooblocky.Onewaytoreducethischunkylookistoapplyabackgroundimage
usingasmoothingeffect.Let’suseagraduatedfade,asinFigure5.32.
Figure 5.32. The tagline background image
Fortheeffectwe’reafter,theimageshouldbelockedtotheright-handedgeofthe
taglineparagraph.ThiscanbeachievedeasilyusingCSS:
style1.css
(excerpt)
#tagline p {
font-style: italic;
font-family: Georgia, Times, serif;
border-top: 3px solid #7da5d8;
border-bottom: 3px solid #7da5d8;
padding-top: .2em;
padding-bottom: .2em;
padding-left: .8em;
215
Picture This! Using Images on Your Website
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margin: 0;
background: #bed8f3 url(backgrounds/tagline-fade.jpg) repeat-y
right;
}
Thepositionkeyword
right
isallyouneedtousetokeeptheimagehuggingthe
tagline’sright-handside;
repeat-y
ensuresthattheimagewillrepeatdownwards
(vertically)ifthefontsizeisincreased,therebyboostingthesizeofthetagline
overall.
A Lick of Paint for the Main Heading
I’mnowgoingtoshowyouhowthemainheader(
h1
)canbelivenedupalittle,
usingtheprevioustechnique.Onceagain,I’veoptedforanimagethat’sgoingtobe
attachedtotheright-handside.Thistime,though,it’snotafade,anditcan’tbe
repeated.Instead,it’stheimageshowninFigure5.33,butonlyapartofitwillbe
visibleintheheader.
Figure 5.33. The background image for our main heading
Theimageistonallydark(ensuringthattheBubbleUnder.comwhitetextwillbe
legibleontop),andtheleftedgefadesoutnicelytomatchthenavybackground
colorthatthe
h1
headingsuse.Wediscussedthistechniquewhenweappliedthe
graduatedfadetothetagline—andthebestwaytoappreciatethetechniqueisto
tryitout.Typetheexampleoutorextractitfromthecodearchive.I’drecommend
resizingyourbrowserwindow,sothatyoucanseetheeffectsuchchangeshaveon
thebackgroundimage.
We’veusedanimagethat’stallerthanthemainpageheading;thisensuresthatthe
pagedisplayswellifusersresizetheirfonts,causingtheheightofthecontainerto
grow.Yes,youdoneedtothinkaboutthesepossiblescenarios!
Build Your Own Website The Right Way Using HTML & CSS
216
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Let’slookattheCSSforthiseffect.Makesurethatthecodebelowappearsafterthe
grouped
h1, h2, h3
rule;wewanttoredefinethesimplebluebackgroundthatwas
appliedinChapter4usingthismorestylishversion:
chapter5/website_files/11_heading_background/style1.css
(excerpt)
h1 {
font-size: x-large;
color: white;
padding-top: 2em;
padding-bottom: .2em;
padding-left: .4em;
margin: 0;
background: navy url(backgrounds/header-bg.jpg) repeat-y right;
}
TheeffectisshowninFigure5.34.
Figure 5.34. A selection of background images applied to finish off the effect
Summary
Inthischapter,we’veseenhowyoucansourcefreeimagesfromtheWeb,oruse
yourownphotos,tocompileanimagegalleryforyoursite.We’vediscussedthe
217
Picture This! Using Images on Your Website
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processesofresizingimagestosuityoursite’sspecificneedsandhowtoapply
variouseffects.I’vealsoexplainedhowyoucanuseCSStoaddcreativeeffectsto
yourimages(forinstance,definingcoloredbordersinastylesheet,ratherthan
producingtheminimage-editingsoftware),aswellashowyoucanapplyimages
asdecorativebackgroundsthatcanbeusedonceonapageorrepeated.
It’samazinghowmuchawebsitecanbeimprovedbyaliberalsprinklingofimagery.
Justacoupleofchaptersback,ourprojectsitewasafairlydull-lookingcollection
ofdocuments;nowit’sstartingtolookmorelikeaproperwebsite—onethatwe
couldveryeasilyrestylebymakingafewchangesinourCSSfile.
InChapter6,we’lllearnallabouttables,asIshowyouhowyoucanusetheseto
displaydatainaclean,easy-to-understandformat.
Build Your Own Website The Right Way Using HTML & CSS
218
How to C#: Basic SDK Concept of XDoc.PDF for .NET
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Chapter
6
Tables: Tools for Organizing Data
ThetitleofthisbookisBuildYourOwnWebsiteTheRightWay.It’simportantto
emphasizethispointaswebeginthischapterbecauseinthe“BadOldDays,”the
contentofthischapter—tables—wouldhavebeenrightupnearthefrontofthebook
astheauthortaughtyouhowtousetablestocreateexcitingpagelayouts!Thisap-
proachhassincebeenrecognizedasbad,bad,bad!But,youknowwhat?Thereare
stillbooksthatteachyoutousetablesforlayout.Thankfully,youdidn’tpickup
oneofthosebooks—bonuspointstoyou!
Asthenamesuggests,tablesaredesignedtopresenttabulardata,suchas:
acalendarofevents
abankstatement
acontactslist
Andmanymoreusesbeyond.Infact,therearemanycircumstancesinwhichtables
areasensiblechoice—butlayingoutanentirewebpageisdefinitelynotamong
them.
What is a Table?
Severaltimesintheprecedingchapters,Icomparedwebtechniquestotoolsthat
youmightuseinMicrosoftWord,andinthecaseoftables,there’sanotherdirect
correlation.Ifyou’veusedtheMicrosoftOfficeprogram,you’veprobablyinserted
atablebefore,usingthetoolbariconshowninFigure6.1.
Figure 6.1. The 
Insert Table
icon in Microsoft Word
YoucanusethistooltocreateatableliketheoneinTable6.1veryeasily.
Table 6.1. An example of a table
Location
Contact (Work)
Contact (Home)
Name
Southampton
02380 577566
02380 123123
Jane Bradley
Brighton
01273 946376
01273 177166
Fred Bradley
Swindon
01793 626696
01793 641207
Lionel Rundel
Atableisthemostsensible,tidywaytoorganizethiskindofdata.Youcaneasily
scandownacolumn,oralongarow,andseewhat’swhat.Theexactsameeffect
canbeachievedonawebpage.
Beforeweembarkontablecreation,though,let’smakeacoupleofessentialchanges
toourprojectsite;thatway,wehaveanappropriateplacetousetables.Whatsort
ofdatawouldwarranttheuseoftablesonadivingwebsite?Howaboutatableof
forthcomingclubevents?That’lldonicely!
1.First,weneedtoaddsomelinkstoallthewebsite’sfiles.Weneedtomakeone
additiontothenavigationontheleftofthepage.Ithinkthisnewnavigationitem
shouldappearbetweentheAboutUsandContactUspagenavigationlinks.Be
suretoaddittoallthefilesinthewebsite,asshownhere:
Build Your Own Website The Right Way Using HTML & CSS
220
<div id="navigation">
<ul>
<li><a href="index.html">Home</a></li>
<li><a href="about.html">About Us</a></li>
<li><a href="events.html">Club Events</a></li>
<li><a href="contact.html">Contact Us</a></li>
<li><a href="gallery.html">Image Gallery</a></li>
</ul>
</div> <!-- end of navigation div -->
2.Next,takeacopyof
index.html
,andrenameitinWindowsExplorer(orFinder,
ifyou’reusingaMac)to
events.html
.
Open
events.html
andmakethefollowingchanges:
Changethecontentbetweentheopening
<title>
andclosing
</title>
tagsto
read“ForthcomingclubdivingeventsandtripswithBubbleUnder.”
Changethepageheading(the
h2
element)toread“ForthcomingClubEvents.”
Deleteeverythingexcepttheheadinginsidethe
div
whose
id
is
bodycontent
.
Beneaththatheading,addanewparagraphthatreads:
BubbleUndermemberslovemeetingupfordivetripsaround
thecountry.Belowareallthedivetripsthatwecurrentlyhave
planned.Formoreinformationaboutanyofthem,pleasegetin
contactwiththatevent’sorganizer.
221
Tables: Tools for Organizing Data
Ifyou’vecompletedallthosesteps,yourcodeshouldlooklikethis:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Forthcoming club diving events and trips with Bubble
Under</title>
<meta charset="utf-8"/>
<link href="style1.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="header">
<div id="sitebranding">
<h1>BubbleUnder.com</h1>
</div>
<div id="tagline">
<p>Diving club for the south-west UK - let's make a
splash!</p>
</div>
</div> <!-- end of header div -->
<div id="navigation">
<ul>
<li><a href="index.html">Home</a></li>
<li><a href="about.html">About Us</a></li>
<li><a href="events.html">Club Events</a></li>
<li><a href="contact.html">Contact Us</a></li>
<li><a href="gallery.html">Image Gallery</a></li>
</ul>
</div>
<div id="bodycontent">
<h2>Forthcoming Club Events</h2>
<p>Bubble Under members love meeting up for dive trips
around the country. Below are all the dive trips that we
currently have planned. For more information about any
of them, please get in contact with that event's
organizer.</p>
</div> <!-- end of bodycontent div -->
</body>
</html>
Build Your Own Website The Right Way Using HTML & CSS
222
Why Tables Are Bad and CSS Rocks
It’stimeforaveryshorthistorylesson.
Thereasonwhywebdesignersusedtousetablesforlayoutwassimple:inthe
earlydaysofwebdevelopment,tablesweretheonlywaytoachievealayoutthat
resembledamagazine-ornewspaper-likegrid.Designerswantedtohaveaheading
atthetopofthepage,acolumnontheleftfornavigation,acolumninthemiddle
forcontent,andathirdcolumnontherightformorelinks.Theproblemwasthat
usingtablestoachievesucheffectswasanabuseofthemarkup—knownasa
hack—butitworkedatthetime,andpeoplesawnothingwrongwithit.
Today,CSSissowell-supportedthatthere’sreallynoexcuseforusingtablesfor
layout,andCSSisdefinitelythebettertoolforthejob.Nevertheless,manywebsites
stillusetable-basedlayouts.Thisdoesn’tmeanthatthisapproachisright:it’s
simplyanoldhabitthatrefusestodiequietlyinthecornerasitshould—although
youcanplayyourparttohelpredressthesituation.Butjustwhataretheadvant-
agesofusingCSSinsteadoftables?Hereareafewforyoutoconsider:
Designandredesignflexibility
ACSS-basedlayoutensuresthatyouplaceallyourstyles(fromcosmetic
touchessuchasfontstyling,tothemajorstructuralrules)inonelocation.
Changethelayoutrulesyousetinthatstylesheet,andyouaffecteverypage
thatreferstoit.Usingatable-basedlayoutlocksyourpagedesigninatpage-
level,sochangingalayoutbecomesamajorproblem—onethat’sunableto
beresolvedsimplybychangingthestylesheet.
Betteraccessibility
Atableissupposedtobeusedfortabulardataonly.Forthisreason,some
assistivedevices(suchasscreenreaders,whichwediscussedinthesection
called“ScreenReaders:HearingtheWeb”inChapter5)areabitconfused
whenthecontentisnotpresentedasexpected.Inotherwords,thesekinds
ofdevicesexpecttoaccesstabulardatainsideatable;ifthetableisbeing
usedforapurposeforwhichitwasneverintended,allbetsareoff,andac-
cessibilitymaybethefirstcasualty.Ifyouuseatableforthepurposesof
layout,contentthatmayappeartobelocatedlogicallyonthescreenmight
beillogicalwhenreadoutbyascreenreader.Thisisaphenomenonknown
astablelinearization,whichwe’llexploreindetailshortly.
Quickerdownloads(orperceptionofdownload)
Atable-basedpagelayoutoftenrendersmoreslowlythananequivalentCSS-
basedlayout;thisisespeciallytrueofpagesthathavealotofcontent.There
223
Tables: Tools for Organizing Data
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