[Values.Units.and.Colors(2012.9)].Eric.A.Meyer.文字版

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1、Values,Units,andColorsEricA.MeyerBeijing•Cambridge•Farnham•Köln•Sebastopol•TokyoValues,Units,andColorsbyEricA.MeyerCopyright©2012O’ReillyMedia.Allrightsreserved.PrintedintheUnitedStatesofAmerica.PublishedbyO’ReillyMedia,Inc.,1005GravensteinHighwayNorth,Sebastopol,CA95472.O’Reillybooksma

2、ybepurchasedforeducational,business,orsalespromotionaluse.Onlineeditionsarealsoavailableformosttitles(http://my.safaribooksonline.com).Formoreinformation,contactourcorporate/institutionalsalesdepartment:800-998-9938orcorporate@oreilly.com.Editors:SimonSt.LaurentandMeghanBlanchetteCoverD

3、esigner:KarenMontgomeryProductionEditor:KristenBorgInteriorDesigner:DavidFutatoCopyeditor:RachelLeachIllustrator:RobertRomanoProofreader:O’ReillyProductionServicesRevisionHistoryfortheFirstEdition:2012-09-25FirstreleaseSeehttp://oreilly.com/catalog/errata.csp?isbn=9781449342517forreleas

4、edetails.NutshellHandbook,theNutshellHandbooklogo,andtheO’ReillylogoareregisteredtrademarksofO’ReillyMedia,Inc.Values,Units,andColors,theimageofasalmon,andrelatedtradedressaretrade-marksofO’ReillyMedia,Inc.Manyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirproductsarecl

5、aimedastrademarks.Wherethosedesignationsappearinthisbook,andO’ReillyMedia,Inc.,wasawareofatrademarkclaim,thedesignationshavebeenprintedincapsorinitialcaps.Whileeveryprecautionhasbeentakeninthepreparationofthisbook,thepublisherandauthorsassumenoresponsibilityforerrorsoromissions,orfordam

6、agesresultingfromtheuseoftheinformationcon-tainedherein.ISBN:978-1-449-34251-7[LSI]1348247002TableofContentsPreface......................................................................vValues,Units,andColors.......................................................1Keywords,Strings,andOth

7、erTextValues1Keywords1Strings3URLs4Images5Identifiers6NumbersandPercentages6Integers6Numbers6Percentages7Distances7AbsoluteLengthUnits7ResolutionUnits10RelativeLengthUnits11Color16NamedColors16ColorsbyRGBandRGBa17ColorsbyHSLandHSLa21BringingtheColorsTogether24Angles25TimeandFre