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Posted to commits@flex.apache.org by ah...@apache.org on 2014/04/26 01:35:02 UTC
[17/51] [partial] ADC articles donated by Adobe Systems Inc
http://git-wip-us.apache.org/repos/asf/flex-external/blob/1bcc0e18/ADC/devnet/flex/articles/spark_layouts.html
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+<!--
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+ <meta name="description" content="Understand Spark layouts and learn how to create a custom one." /><meta name="creationDate" content="2010-09-28 @ 20:46:55" />
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+<meta name="shortTitle" content="Spark layouts with Flex 4"/>
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+<meta name="author" content="Evtim Georgiev" />
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+ <li class="SiteHeaderPanelLink"><a href="/products/photoshop.html?promoid=JOLIW" id="Products_Topdestinations_Photoshop">Photoshop</a></li>
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+ <li class="SiteHeaderPanelLink"><a href="/education/students.html?marketSegment=EDU&promoid=KFKQD" id="Product_Topdestinationss_Students">Students</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/elements-family.html?promoid=JOLIV" id="Product_Topdestinationss_Elementsfamily">Elements family</a></li>
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+ <div class="SiteHeaderRow">
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+ <ul>
+ <li class="SiteHeaderPanelLink"><a href="/products/creativecloud.html?promoid=KAUBZ" id="Products_AdobeCreativeCloud_WhatisAdobeCreativeCloud">What is Adobe Creative Cloud?</a></li>
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+ <li class="SiteHeaderPanelLink"><a href="/products/audiencemanager.html?promoid=KAUCW" id="Products_MediaOptimizer_AudienceManager">AudienceManager</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/audienceresearch.html?promoid=KAUCX" id="Products_MediaOptimizer_AudienceResearch">AudienceResearch</a></li>
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+ <p class="SiteHeaderPanelHeaderSmall">Campaign management</p>
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+ <li class="SiteHeaderPanelLink"><a href="/solutions/campaign-management.html?promoid=KFKQI" id="Products_Campaignmanagement_AdobeCampaign">Adobe Campaign</a></li>
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+ </div>
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+ <div class="SiteHeaderColumnSingle SiteHeaderShadowLeft">
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+ <li class="SiteHeaderPanelLink"><a href="https://www.echosign.adobe.com/en/home.html?promoid=KAUDB" target="_blank" class="SiteHeaderLinkNewWindow" id="Products_DocumentServices_EchoSign"><span class="SiteHeaderIconNewWindowNoWrap">EchoSign<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
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+ </ul>
+
+ <p class="SiteHeaderPanelHeader">Publishing</p>
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="/products/digital-publishing-suite-family.html?promoid=JOLIU" id="Products_Publishing_DigitalPublishingSuite">Digital Publishing Suite</a></li>
+ </ul>
+ </div>
+ </div>
+ <br style="clear: both" />
+
+ <div class="SiteHeaderRow">
+ <ul class="SiteHeaderRightLink">
+ <li class="SiteHeaderPanelLink"><a href="/products/catalog.html?promoid=JOOTH" id="Products_Seeallproducts">See all products</a></li>
+ </ul>
+ </div>
+ </div>
+ </div>
+ <div class="SiteHeaderDropdownLink SiteHeaderBarItem" id="shBusinessSolutions">
+ <a href="/solutions.html?promoid=KAWQJ" id="shBusinessSolutionsLink" class="SiteHeaderBarLink">Business solutions</a>
+ <div class="SiteHeaderDropPanel SiteHeaderDropdown-Double" id="BusinessSolutionsPanel">
+ <div class="SiteHeaderRow">
+ <div class="SiteHeaderColumn-1">
+ <p class="SiteHeaderPanelHeaderSmall">By business need</p>
+ <ul>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/digital-analytics.html?promoid=JOLJB" id="BusinessSolutions_Bybusinessneed_Digitalanalytics">Digital analytics</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/digital-publishing.html?promoid=JOLJA" id="BusinessSolutions_Bybusinessneed_Digitalpublishing">Digital publishing</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/acrobat.html?promoid=KAWSC" id="BusinessSolutions_Bybusinessneed_Documentmanagement">Document management</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/media-optimization.html?promoid=JOLIX" id="BusinessSolutions_Bybusinessneed_Mediaoptimization">Media optimization</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/social-marketing.html?promoid=JZPNO" id="BusinessSolutions_Bybusinessneed_Socialmarketing">Social marketing</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/testing-targeting.html?promoid=KAXLU" id="BusinessSolutions_Bybusinessneed_Testingandtargeting">Testing and targeting</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/creativecloud/video.html?promoid=KAUDD" id="BusinessSolutions_Bybusinessneed_Videoeditingandserving">Video editing and serving</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://html.adobe.com?promoid=JZEFF" target="_blank" class="SiteHeaderLinkNewWindow" id="BusinessSolutions_Bybusinessneed_Webdevelopment">Web <span class="SiteHeaderIconNewWindowNoWrap">development<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/web-experience-management.html?promoid=JOOYM" id="BusinessSolutions_Bybusinessneed_Webexperiencemanagement">Web experience management</a></li>
+ </ul>
+
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="/solutions.html?promoid=JOOTI" id="BusinessSolutions_Seeallbusinessneeds">See all business needs</a></li>
+ </ul>
+ </div>
+
+ <div class="SiteHeaderColumn-2">
+ <p class="SiteHeaderPanelHeaderSmall">By industry</p>
+ <ul>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/broadcasting.html?promoid=JOLIY" id="BusinessSolutions_Byindustry_Broadcast">Broadcast</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/education.html?marketSegment=EDU&promoid=JOLIZ" id="BusinessSolutions_Byindustry_Education">Education</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/financial-services.html?promoid=KAUDE" id="BusinessSolutions_Byindustry_Financialservices">Financial services</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/government.html?promoid=KAUDF" id="BusinessSolutions_Byindustry_Government">Government</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/digital-publishing.html?promoid=KAUDG" id="BusinessSolutions_Byindustry_Publishing">Publishing</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/retail.html?promoid=KAWSD" id="BusinessSolutions_Byindustry_Retail">Retail</a></li>
+ </ul>
+
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="/solutions.html?promoid=KAUDH" id="BusinessSolutions_Seeallindustries">See all industries</a></li>
+ </ul>
+ </div>
+ </div>
+ </div>
+ </div>
+ <div class="SiteHeaderDropdownLink SiteHeaderBarItem" id="shSupportLearning">
+ <a href="http://helpx.adobe.com/support/?promoid=KAWQK" id="shSupportLearningLink" class="SiteHeaderBarLink">Support & Learning</a>
+ <div class="SiteHeaderDropPanel SiteHeaderDropdown-Single" id="SupportLearningPanel">
+ <div class="SiteHeaderRow">
+ <p class="SiteHeaderPanelHeaderSmall">I need help</p>
+ <ul>
+ <li class="SiteHeaderPanelLink"><a href="http://helpx.adobe.com/support/?promoid=JZEFP" id="SupportLearning_Ineedhelp_Products">Products</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://helpx.adobe.com/creative-cloud/topics/getting-started.html?promoid=JZEFO" id="SupportLearning_Ineedhelp_AdobeCreativeCloud">Adobe Creative Cloud</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://helpx.adobe.com/marketing-cloud.html?promoid=KAWSE" id="SupportLearning_Ineedhelp_AdobeMarketingCloud">Adobe Marketing Cloud</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://forums.adobe.com/index.jspa?promoid=JZEFM" target="_blank" id="SupportLearning_Ineedhelp_Forums"><span class="SiteHeaderIconNewWindowNoWrap">Forums<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
+ </ul>
+
+ <p class="SiteHeaderPanelHeaderSmall">I want to learn</p>
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="http://helpx.adobe.com/learning.html?promoid=KAUDK" id="SupportLearning_Iwanttolearn_Trainingandtutorials">Training and tutorials</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://training.adobe.com/certification.html?promoid=KAUDM" target="_blank" id="SupportLearning_Iwanttolearn_Certification"><span class="SiteHeaderIconNewWindowNoWrap">Certification<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
+ <li class="SiteHeaderPanelLink"><a href="/devnet.html?promoid=KAUDN" id="SupportLearning_Iwanttolearn_AdobeDeveloperConnection">Adobe Developer Connection</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/designcenter.html?promoid=KAUDO" id="SupportLearning_Iwanttolearn_AdobeDesignCenter">Adobe Design Center</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://tv.adobe.com?promoid=KFELF" target="_blank" id="SupportLearning_Iwanttolearn_AdobeTV">Adobe <span class="SiteHeaderIconNewWindowNoWrap">TV<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
+ <li class="SiteHeaderPanelLink"><a href="/solutions/digital-marketing/guides.html?promoid=KAWSF" id="SupportLearning_Iwanttolearn_AdobeMarketingCenter">Adobe Marketing Center</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://labs.adobe.com/?promoid=JZEFQ" target="_blank" id="SupportLearning_Iwanttolearn_AdobeLabs">Adobe <span class="SiteHeaderIconNewWindowNoWrap">Labs<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
+ </ul>
+ </div>
+ </div>
+ </div>
+ <div class="SiteHeaderDropdownLink SiteHeaderBarItem" id="shDownload">
+ <a href="/downloads/?promoid=KAWQL" id="shDownloadLink" class="SiteHeaderBarLink">Download</a>
+ <div class="SiteHeaderDropPanel SiteHeaderDropdown-Single" id="DownloadPanel">
+ <div class="SiteHeaderRow">
+ <ul>
+ <li class="SiteHeaderPanelLink"><a href="/downloads/?promoid=JZEFS" id="Download_Producttrials">Product trials</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://get.adobe.com/flashplayer/?promoid=JZEFT" id="Download_AdobeFlashPlayer">Adobe Flash Player</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://get.adobe.com/reader/?promoid=JZEFU" id="Download_AdobeReader">Adobe Reader</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://get.adobe.com/air/?promoid=JZEFV" id="Download_AdobeAIR">Adobe AIR</a></li>
+ </ul>
+
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="/downloads/?promoid=JZEFW" id="Download_Seealldownloads">See all downloads</a></li>
+ </ul>
+ </div>
+ </div>
+ </div>
+ <div class="SiteHeaderDropdownLink SiteHeaderBarItem" id="shCompany">
+ <a href="/company.html?promoid=KAWQM" id="shCompanyLink" class="SiteHeaderBarLink">Company</a>
+ <div class="SiteHeaderDropPanel SiteHeaderDropdown-Single" id="CompanyPanel">
+ <div class="SiteHeaderRow">
+ <ul>
+ <li class="SiteHeaderPanelLink"><a href="/careers.html?promoid=JZEFX" id="Company_CareersatAdobe">Careers at Adobe</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/aboutadobe/invrelations/?promoid=JZEFZ" id="Company_InvestorRelations">Investor Relations</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/aboutadobe/pressroom/?promoid=JZEGA" id="Company_Newsroom">Newsroom</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/privacy.html?promoid=JZEGB" id="Company_Privacy">Privacy</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/corporate-responsibility.html?promoid=JZEFY" id="Company_CorporateResponsibility">Corporate Responsibility</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/customershowcase.html?promoid=KEWBG" id="Company_CustomerShowcase">Customer Showcase</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/company/contact.html?promoid=JZEGC" id="Company_Contactus">Contact us</a></li>
+ </ul>
+
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="/company.html?promoid=JZPLK" id="Company_Morecompanyinfo">More company info</a></li>
+ </ul>
+ </div>
+ </div>
+ </div>
+ <div class="SiteHeaderDropdownLink SiteHeaderBarItem" id="shBuy">
+ <a href="/products/catalog/software._sl_id-contentfilter_sl_catalog_sl_software_sl_mostpopular.html?promoid=KAWQN" id="shBuyLink" class="SiteHeaderBarLink">Buy</a>
+ <div class="SiteHeaderDropPanel SiteHeaderDropdown-Single" id="BuyPanel">
+ <div class="SiteHeaderRow">
+ <ul class="SiteHeaderPanelLinkNoBottom">
+ <li class="SiteHeaderPanelLink"><a href="/products/catalog/software.html?marketSegment=COM&promoid=KAWQO" id="Buy_Forpersonalandprofessionaluse">For personal and professional use</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/catalog/software._sl_id-contentfilter_sl_catalog_sl_education_sl_alledu.html?marketSegment=EDU&promoid=KAWQP" id="Buy_Forstudentseducatorsandstaff">For students, educators, and staff</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/small-business-pricing/software-catalog._sl_id-contentfilter_sl_catalog_sl_software_sl_creativecloudmembership.html?marketSegment=COM&promoid=JOLJE" id="Buy_Forsmallandmediumbusinesses">For small and medium businesses</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/volume-licensing.html?promoid=KAWQQ" id="Buy_VolumeLicensing">Volume Licensing</a></li>
+ <li class="SiteHeaderPanelLink"><a href="/products/discount-software-coupons.html?promoid=KAWQR" id="Buy_Specialoffers">Special offers</a></li>
+ <li class="SiteHeaderPanelLink"><a href="http://success.adobe.com/en/na/programs/rfi/dm_sales_inquiries.html?promoid=KAWSG" target="_blank" id="Buy_AdobeMarketingCloudsales">Adobe Marketing Cloud <span class="SiteHeaderIconNewWindowNoWrap">sales<span class="SiteHeaderIconNewWindow"> [opens in a new window]</span></span></a></li>
+ </ul>
+ </div>
+ </div>
+ </div>
+
+ <!--
+ <div id="tooltipStrings" class="SiteHeaderTooltipStrings LayoutHidden">
+ <span id="tooltipStringExpandMenu">Expand menu</span>
+ <span id="tooltipStringOpenLink">Open link</span>
+ </div>
+ -->
+
+ <a href="/go/gnav_search" id="shSearchButton" class="SiteHeaderBarItem SiteHeaderSearchButton" style="display: none;">Search</a>
+ <div class="SiteHeaderBarItem SiteHeaderBarItemLast"> </div>
+ <div id="site-search" class="SiteHeaderSearch">
+ <input title="Search" type="text" id="search-input" name="term" maxlength="1000" />
+ <input type="hidden" id="searchbuddy-loc" name="loc" value="en_us" />
+ <button type="submit" id="search-submit" class="icon-replace search">Search</button>
+ </div>
+ </div>
+ <div class="SiteHeaderUser">
+ <div id="shSignInBlock">
+ <a id="shInfo" class="SiteHeaderUserItem SiteHeaderInfo">Info</a>
+ <a href="/account/sign-in.adobedotcom.html" id="shSignIn" class="SiteHeaderUserItem LinkStrong">Sign in</a>
+ <div class="SiteHeaderPopPanelShadow width-250" id="InfoPanelShadow" style="display: none;"></div>
+ <div class="SiteHeaderPopPanel width-250" id="InfoPanel" style="display: none;">
+ <div class="SiteHeaderPanelRow">
+ <span class="SiteHeaderPanelHeader">Why sign in?</span>
+ Sign in to manage your account and access trial downloads, product extensions, community areas, and more.
+ </div>
+ </div>
+ </div>
+
+ <a href="/account.html" id="shWelcome" class="SiteHeaderUserItem SiteHeaderArrow LinkStrong" style="display: none;">Welcome, <span id="screenName"></span></a>
+
+ <div class="SiteHeaderPopPanelShadow" id="WelcomePanelShadow" style="display: none;"></div>
+ <div class="SiteHeaderPopPanel" id="WelcomePanel" style="display: none;">
+ <div class="SiteHeaderPanelRow SiteHeaderPanelLink" id="shMyAccount">
+ <a class="SiteHeaderPanelHeader" href="/go/gnavtray_myadobe_en_us">My Adobe</a>
+ </div>
+ <div class="SiteHeaderPanelRow SiteHeaderPanelLink" id="shMyOrders">
+ <a class="SiteHeaderPanelHeader" href="/go/gnavtray_myadobe_myorders_en_us">My orders</a>
+ </div>
+ <div class="SiteHeaderPanelRow SiteHeaderPanelLink" id="shMyInformation">
+ <a class="SiteHeaderPanelHeader" href="/go/gnavtray_myadobe_myinformation_en_us">My information</a>
+ </div>
+ <div class="SiteHeaderPanelRow SiteHeaderPanelLink" id="shMyPreferences">
+ <a class="SiteHeaderPanelHeader" href="/go/gnavtray_myadobe_mypreferences_en_us">My preferences</a>
+ </div>
+ <div class="SiteHeaderPanelRow SiteHeaderPanelLink" id="shMyProductsServices">
+ <a class="SiteHeaderPanelHeader" href="/go/gnavtray_myadobe_myproducts_services_en_us">My products and services</a>
+ </div>
+ <div class="SiteHeaderPanelRow SiteHeaderPanelLink" id="shSignOut">
+ <a class="SiteHeaderPanelHeader" id="shSignOutLink" href="/cfusion/membership/logout.cfm">Sign out</a>
+ </div>
+ </div>
+
+ <div id="MyCartLinkContainer">
+ <a href="/go/gnav_mycart_en_us" id="shMyCart" class="SiteHeaderUserItem SiteHeaderCart">My cart<span id="cartQuantity"></span></a>
+ </div>
+
+ <a href="/privacy.html" id="shPrivacy" class="SiteHeaderUserItem">Privacy</a>
+ <a href="/go/gnav_myadobe_en_us" id="shMyAdobe" class="SiteHeaderUserItem">My Adobe</a>
+ </div>
+ </div>
+</form>
+
+<div id="SiteHeaderMobile" class="SiteHeaderMobile LayoutHidden LayoutSlim Text TextSmall">
+ <a href="/go/gnav_adobe_logo_en_us" id="shHomeMobile" class="SiteHeaderHome SiteHeaderHomeMobile">Adobe</a>
+
+ <div class="SiteHeaderBar SiteHeaderBarMobile" id="shBarMobile">
+ <span class="SiteHeaderBarItemMobile SiteHeaderBarItemMobileNoLeftBorder" id="shProductsMobileSpan"><a href="/go/gnav_products_en_us" id="shProductsMobile" class="SiteHeaderBarLink">Products</a></span>
+ <span class="SiteHeaderBarItemMobile" id="shSectionsMobileSpan"><a href="#" id="shSectionsMobile" class="SiteHeaderArrowMobile SiteHeaderBarLink">Sections</a></span>
+ <span class="SiteHeaderBarItemMobile" id="shSectionsMobileBuy"><a href="/go/gnav_store_en_us" id="shBuyMobile" class="SiteHeaderBarLink">Buy</a></span>
+ <span class="SiteHeaderBarItemMobile SiteHeaderBarItemMobileNoRightBorder SiteHeaderBarItemMobileNoPadding"> </span>
+ <span class="SiteHeaderBarItemMobile SiteHeaderBarItemMobileNoRightBorder SiteHeaderBarItemFloatRight" id="shSearchMobileSpan"><a href="/go/gnav_search" id="shSearchMobile" class="SiteHeaderSearchButtonMobile">Search</a></span>
+ <span class="SiteHeaderBarItemMobile SiteHeaderBarItemMobileNoLeftBorder SiteHeaderBarItemFloatRight SiteHeaderBarItemMobileNoPadding"> </span>
+ </div>
+ <div class="SiteHeaderBarMobileExtend" id="shBarExtend">
+ <div id="shBarExtendSections" style="display: none;">
+ <div id="shBarExtendSections1" class="SiteHeaderBarMobileExtendSections">
+ <a href="/go/gnav_solutions_en_us" id="shSectionsSolutionsMobile" class="SiteHeaderBarExtendSectionsItem SiteHeaderBarLink">Solutions</a>
+ <a href="/go/gnav_company_en_us" id="shSectionsCompanyMobile" class="SiteHeaderBarExtendSectionsItem SiteHeaderBarLink">Company</a>
+ </div>
+ <div id="shBarExtendSections2" class="SiteHeaderBarMobileExtendSections">
+ <a href="/go/gnav_help_en_us" id="shSectionsHelpMobile" class="SiteHeaderBarExtendSectionsItem SiteHeaderBarLink">Help</a>
+ <a href="/go/gnav_learning_en_us" id="shSectionsLearningMobile" class="SiteHeaderBarExtendSectionsItem SiteHeaderBarLink">Learning</a>
+ </div>
+ </div>
+ <div id="shBarExtendSearch" style="display: none;">
+ <form id="globalnav-search-mobile" class="SiteHeaderSearchMobileForm" name="globalnav-search-mobile" method="get" action="/go/gnav_search" accept-charset="utf-8">
+ <input title="Search" type="text" id="search-input-mobile" name="term" maxlength="1000" />
+ <button type="submit" id="search-submit-mobile">Search</button>
+ </form>
+ </div>
+ </div>
+ <div class="SiteHeaderUser">
+ <a href="/cfusion/membership/index.cfm?loc=en_us&nl=1" id="shSignInMobile" class="SiteHeaderUserItem SiteHeaderUserItemMobile LinkStrong">Sign in</a>
+ <a href="/cfusion/membership/logout.cfm" id="shSignOutMobile" class="SiteHeaderUserItem SiteHeaderUserItemMobile LinkStrong" style="display: none;">Sign out</a>
+ <a href="/privacy.html" id="shPrivacyMobile" class="SiteHeaderUserItem SiteHeaderUserItemMobile">Privacy</a>
+ <a href="/go/gnav_myadobe_en_us" id="shMyAdobeMobile" class="SiteHeaderUserItem SiteHeaderUserItemMobile">My Adobe</a>
+ </div>
+</div>
+<!--googleon: index--><div class="hovercart"><div id="HoverCartModal">
+ <div class="CartHeaderPopPanelShadow HoverCartwidth" id="CartPanelShadow" style="display: none;">
+ <div class="CartHeaderPopPanel HoverCart" id="CartPanel">
+ <div id="HoverCartItem" class="RuleHBottom HoverCart-1-3 LayoutBigRowTop" style="display: none">
+ <div class="LayoutBreakAfter">
+ <div class="HoverCart-1 LayoutHItem">
+ <div style="padding-left:60px;" class=" LayoutBreakAfter LayoutPullout">
+ <div id="HoverCartBoxShotxyz" class="HoverCartBoxShot">
+ <a href="">
+ <img src="" class="LayoutImage" alt=""/>
+ </a>
+ </div>
+ <div style="float:left;width:100%" class="CPodCostCell">
+ <span class="TextStrong ProductName" id="HoverCartHeaderxyz">
+ <a href="#">
+ </a>
+ </span>
+ <div class="LayoutBigRowBottom" id="HoverCartDescriptionxyz">
+ </div>
+ <span id="HoverCartPreOrderHardGoodMsgxyz" style="display:none;" class="TextWarning TextPostScript">Preorder Estimated Availability <span id="HoverCartPreOrderHardGoodMsgDatexyz">Date</span>. Your credit card will not be charged until the product is shipped. Estimated availability date is subject to change.</span>
+ <span id="HoverCartPreOrderSoftGoodMsgxyz" style="display:none;" class="TextWarning TextPostScript">Preorder Estimated Availability <span id="HoverCartPreOrderSoftGoodMsgDatexyz">Date</span>. Your credit card will not be charged until the product is ready to download. Estimated availability date is subject to change.</span>
+
+ </div>
+ </div>
+</div>
+ <div class="LayoutHItem HoverCart-2">
+ <div class="HoverCartQty">
+ Qty:
+ <span id="HoverCartQtyxyz">
+ </span>
+ </div>
+ </div>
+ <div class="LayoutRight">
+ <div class="CheckoutCostDark LayoutRight TextRight">
+ <span id="HoverCartPricexyz">
+ </span>
+ <span id="HoverCartSubscriptionxyz" class="CheckoutSubscription">
+ </span>
+ <div id="HoverCartVatPercentageLabelxyz" class="TextEm TextSmall" style="display:none; max-width: 100px;"><span id="HoverCartVatPercentagePreTextxyz"></span>
+ <span id="HoverCartVatPercentagexyz"></span></div>
+ </div>
+ </div>
+
+ </div>
+ <div class="HoverCartEDUMessage LayoutBigCellBottom" style="display:none">Purchase requires verification of academic eligibility</div>
+ </div>
+ <div id="HoverCartContainer" class="LayoutBreakAfter" style=""></div>
+ <a id="HoverCartMoreItems" class="LayoutBreakAfter" style="text-align: center;" href="/cart.html"></a>
+ <div id="HoverCartButtons" class="HoverCart-1-3">
+ <table border="0" align="right" width="70%">
+ <tr>
+ <td>
+ <div class="TextRight HoverCartSubTotal">Subtotal</div>
+ <div id="ExVatLabel" style="display:none" class="TextEm TextSmall TextRight"></div>
+ </td>
+ <td>
+ <div class="LayoutRight TextRight">
+ <div class="CheckoutCostDark">
+ <span id="HoverCartSubTotal">
+ </span>
+ </div>
+ </div>
+ </td>
+ </tr>
+ <tr id="HoverCartPromotionsRow">
+ <td>
+ <div class="TextRight HoverCartPromotionsLabel HoverCartSubTotal">Promotions</div>
+ </td>
+ <td>
+ <div class="LayoutRight TextRight">
+ <div class="CheckoutCostDark">
+ <span id="HoverCartPromotions">
+ </span>
+ </div>
+ </div>
+ </td>
+ </tr>
+ <tr id="HoverCartShippingRow">
+ <td>
+ <div class="TextRight HoverCartShippingLabel HoverCartSubTotal">Estimated shipping</div>
+ </td>
+ <td>
+ <div class="LayoutRight TextRight">
+ <div class="CheckoutCostDark">
+ <span id="HoverCartShipping">
+ </span>
+ </div>
+ </div>
+ </td>
+ </tr>
+ <tr id="HoverCartVATRow">
+ <td>
+ <div class="TextRight HoverCartVATLabel HoverCartSubTotal">Tax</div>
+ </td>
+ <td>
+ <div class="LayoutRight TextRight">
+ <div class="CheckoutCostDark">
+ <span id="HoverCartVat">
+ </span>
+ </div>
+ <div id="CartTaxHeader">
+ Calculated at checkout</div>
+ </div>
+ </td>
+ </tr>
+ <tr>
+ <td><div class="RuleH"></div></td>
+ <td><div class="RuleH"></div></td>
+ </tr>
+ <tr>
+ <td>
+ <div class="TextRight HoverCartTotalLabel HoverCartSubTotal">Total</div>
+ </td>
+ <td>
+ <div class="LayoutRight TextRight">
+ <div class="CheckoutCostDark">
+ <span id="HoverCartTotal">
+ </span>
+ </div>
+ </div>
+ </td>
+ </tr>
+ </table>
+ <div class="LayoutBreak"></div>
+
+ <div class="HoverCart-1-3 LayoutRight LayoutCellTop LayoutBreakAfter">
+ <a href="/cart.html" id="HoverCartCheckOut" class="CartButtonYellow CartShopCheckOut LayoutRight"><span class="CartBuyIconText">Review and Checkout</span></a>
+ </div>
+ </div>
+ </div>
+ </div>
+ </div>
+<script>
+ /*global jQuery,adobe*/
+ jQuery.createNs("Adobe.Cart.ShoppingCart");
+
+ Adobe.Cart.ShoppingCart.HoverCart = {
+
+ MaxItems: "4",
+
+ DisplayTime: "5000",
+
+ MoreItemsTextSingular: "() more item in your cart",
+
+ MoreItemsTextPlural: "() more items in your cart",
+
+ MonthToMonthText: "per month",
+
+ YearlyText: "per year"
+ };
+
+ Adobe.Cart.TaxLabels = {
+ TaxInclusiveText : "",
+ TaxNotApplicable : "Tax not applicable"
+ };
+
+ Adobe.Cart.ShoppingCart.GlobalVars = {
+
+ CountryCode: "US",
+
+ MarketSegment: "COM",
+
+ AkamaiURLPrefix: "http://wwwimages.adobe.com/www.adobe.com",
+
+ PriceMonthText: "per month",
+
+ PriceYearText: "per year",
+
+ FullSubMonthText: "Month-to-month",
+
+ FullSubYearText: "One-year",
+
+ SubMonthText: "Monthly",
+
+ SubYearText: "Annual",
+
+ SubscriptionItemText: "NONE",
+
+ TermTypeMonth: "MONTH",
+
+ TermTypeYear: "YEAR",
+
+ BackupDVDParent: "_PARENT",
+ /*
+ params: {
+ cart,
+ price,
+ categoryPath,
+ originalPrice,
+ storeName,
+ locale,
+ usePrecision,
+ type,
+ taxCode,
+ delimiter,
+ showCentDelim,
+ distributionMethod
+ }
+ */
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+ Spark layouts with Flex 4</h1>
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+ Comparing Spark and MX layouts</a>
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+ Working with the Spark Layouts</a>
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+ Creating a custom Spark layout</a>
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+ <h3 class="TextH5 LayoutSmallRowTop">
+ Prerequisite knowledge</h3>
+ <div class="LayoutRowBottom">
+ <p>This article assumes knowledge of the Flex 3 Framework.</p>
+</div>
+ <h3 class="TextH5 LayoutSmallRowTop">
+ User level</h3>
+ <p class="LayoutRowBottom">Intermediate</p>
+ </div>
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+<a name="articlecontentAdobe_text_18" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <h3>Additional Requirements</h3>
+<h4>Flash Builder 4 (not strictly required, but useful)</h4>
+<ul class="link-list compact">
+<li><a class="icon download" target="_blank" href="/go/try_flashbuilder/">Try</a></li>
+<li><a class="icon info" target="_blank" href="/go/flashbuilder_buy/">Buy</a></li>
+</ul>
+</div>
+ </div>
+<a name="articlecontentAdobe_text" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <p>Spark, the new component and skinning architecture in Flex 4, brings a lot to the RIA table and addresses a number of pain points in skinning, CSS, components, states, animation, text, graphics tags, layouts, and more.</p>
+<p>In this article I'm going to focus on Spark layouts. I will provide an overview of the major architectural differences between Spark and Flex 3 layouts. After a brief discussion of usage differences I'll step through creating a custom Spark layout—a simple flow layout class.</p>
+<p>Throughout this article the term MX refers to layouts, components, and the general architecture of the Flex 3 framework. The term Spark refers to layouts, components, and the general architecture introduced with Flex 4.</p>
+</div>
+ </div>
+<a name="articlecontentAdobe_numberedheader" style="visibility:hidden"></a><div class="parbase compbase numberedheader section"><h3 class="TextH3 LayoutCellSides LayoutRow">
+ <a id="articlecontentAdobe_numberedheader"></a>
+ Comparing Spark and MX layouts</h3>
+</div>
+<a name="articlecontentAdobe_text_0" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <p>As with most other features of the new Spark architecture, the new layouts are in fact based on the already powerful MX layout system. Flex 3 developers will feel at home with the general execution flow, APIs, and layout logic. However, there are also a number of additions and changes that are driven by the Spark goal of more modular design.</p>
+<h4>Common characteristics</h4>
+<p>For the developer working in MXML, not much has changed. Properties such as <code>width</code>, <code>height</code>, <code>minWidth</code>, <code>explicitWidth</code>, and <code>percentWidth</code> as well as their syntax and semantics have not changed. Well-known styles such as <code>left</code>, <code>right</code>, <code>top</code>, <code>horizontalCenter</code>, and <code>baseline</code> are supported.</p>
+<p>The component developer will find familiar elements as well. The core LayoutManager class and component lifecycle have stayed the same. The three familiar methods for component developers—<code>commitProperties()</code>, <code>measure()</code>, and <code>updateDisplayList()</code>—are still called by the LayoutManager in the same order and the invalidation rules have not changed.</p>
+<p>Components still have their default size calculated when their <code>measure()</code> method is called. Also, Components still have their children sized and arranged when their <code>updateDisplayList()</code> method is called.</p>
+<h4>Notable changes</h4>
+<p>Perhaps the most obvious layout difference is that in Spark the layouts have been separated from the containers! When a Spark container <code>measure()</code> or <code>updateDisplayList()</code> method is called, the task of measurement and child arrangement is promptly delegated to a Spark layout instance. This separation comes along with a number of other related novelties:</p>
+<ul>
+<li>Layout logic is abstracted in separate classes inheriting from the LayoutBase class. LayoutBase is the minimum contract for a class to be a Spark layout.</li>
+<li>New APIs are introduced as a contract between Spark layouts and the elements they measure, size, and position. These are represented by the ILayoutElement interface and are designed to support robust 2D and 3D transformations. If you're not creating your own layout, then you probably don't care about this interface, but if you do, it will hopefully save you a lot of time.</li>
+<li>Layout <i>virtualization—</i>the creation, destruction, and recycling of itemRenderers for data containers<i>—</i>is fully implemented by the DataGroup container, Spark's basic building block for data containers. Spark layouts can support virtualization relatively easily because the heavy lifting is done by the DataGroup.</li>
+<li>The display list order is now decoupled from the child order in Spark containers. For example the first child can render on top of the last child.</li>
+</ul>
+<h4>Improvements and new features</h4>
+<p>The changes in the Spark layout are geared towards making the whole system more modular, powerful, and extensible. Here is a list of the new features and enhancements that Spark brings as a direct result of the aforementioned changes:</p>
+<ul>
+<li><b>Assignable layouts</b>—Since the layout logic is separate from the containers, Spark containers can be assigned different Spark layouts, even at run time. This reduces the number of container classes, while promoting modularity and code reuse. For example, in Spark there is only one List class. To get similar functionality to the legacy MX TileList, you simply assign it a new TileLayout instance.</li>
+<li><b>Custom layouts—</b>Together with the separation of the layout logic from the containers, the new LayoutBase class and the ILayoutElement interface enable developers to quickly and easily create powerful layouts that can be mixed and matched with stock Spark containers.</li>
+<li><b>Arbitrary 2D transformations—</b>The stock Spark layouts now support arbitrary 2D transformations. This support is built into the ILayoutElement interface that is implemented by all children of a Spark container. This makes developing custom layouts with 2D transform support effortless.</li>
+<li><b>Per-pixel scrolling everywhere—</b>The reworked virtualization support in DataGroup allows for smooth per-pixel scrolling in Spark containers. Implementing scrolling support in a custom layout, again, is a breeze.</li>
+<li><b>3D support</b>—The LayoutBase and ILayoutElement interfaces are designed with 3D support in mind. There are already 3D custom layouts examples floating around the web, including CoverFlow, Carousel, and WheelLayout to name a few.</li>
+<li><b>Depth order</b>—Developers can specify the depth of each child, either in MXML or from a custom layout.</li>
+<li><b>Post-layout transforms—</b>Developers can specify properties like <code>x</code>, <code>y</code>, <code>z</code>, <code>rotation</code>, <code>scale</code>, and more without affecting the layout. Since now all the stock Spark layouts have built-in 2D transform support, this new feature comes quite handy in lots of cases. Consider a hover over effect for example, where moving the mouse over a thumbnail in a horizontal list can scale it up a little or flip it in 3D, without actually pushing the siblings to the right.</li>
+<li><b>Consistent coordinate space—</b>All of the size properties <code>width</code>, <code>height</code>, <code>measuredWidth</code>, and <code>measuredHeight</code> are now <i>always</i> consistently pre-transform. This eliminates confusing rules like "<code>measuredWidth</code> is <code>unscaled</code> in <code>measure()</code>, but scaled in <code>updateDisplayList()</code>".</li>
+</ul>
+</div>
+ </div>
+<a name="articlecontentAdobe_numberedheader_0" style="visibility:hidden"></a><div class="parbase compbase numberedheader section"><h3 class="TextH3 LayoutCellSides LayoutRow">
+ <a id="articlecontentAdobe_numberedheader_0"></a>
+ Working with the Spark Layouts</h3>
+</div>
+<a name="articlecontentAdobe_text_1" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <p>Because layouts and containers are separated in Spark, there are a few notable changes that you need to take into account when working with the layouts. Take a moment to examine the following table of MX layout container classes and their corresponding combination of Spark layout and container:</p>
+<table><tbody>
+<tr>
+<th>MX Containers</th>
+<th>Corresponding combination of Spark Layout and Container</th>
+</tr>
+<tr>
+<td>Canvas</td>
+<td>Group <span>with BasicLayout</span> (no advanced constraints)</td>
+</tr>
+<tr>
+<td>HBox</td>
+<td>Group with HorizontalLayout (or the HGroup class)</td>
+</tr>
+<tr>
+<td>VBox</td>
+<td>Group with VerticalLayout (or the VGroup class)</td>
+</tr>
+<tr>
+<td>Tile</td>
+<td>Group with TileLayout</td>
+</tr>
+<tr>
+<td>List</td>
+<td>List with VerticalLayout</td>
+</tr>
+<tr>
+<td>TileList</td>
+<td>List with TileLayout</td>
+</tr>
+</tbody>
+</table>
+<p>Note that Spark provides convenient classes for commonly used combinations<i>—</i>the HGroup and VGroup classes are simple Group classes that have HorizontalLayout and VerticalLayout by default.</p>
+<h4>MXML syntax</h4>
+<p>To specify the layout for a container, set its <code>layout</code> property to an instance of a Spark layout:</p>
+</div>
+ </div>
+<a name="articlecontentAdobe_codeblock" style="visibility:hidden"></a><div class="parbase codeblock compbase section"><div class="PanelFillLight PanelBevelTop LayoutCell LayoutRow">
+ <code class="CodeBlock"><s:List id="list">
+ <s:layout>
+ <s:HorizontalLayout/>
+ </s:layout>
+ ...
+ </s:List></code>
+ </div>
+</div>
+<a name="articlecontentAdobe_text_2" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <p>All layout properties are accessible through that layout class instance. Here's an example that shows how to configure the gap and the vertical alignment:</p>
+</div>
+ </div>
+<a name="articlecontentAdobe_codeblock_0" style="visibility:hidden"></a><div class="parbase codeblock compbase section"><div class="PanelFillLight PanelBevelTop LayoutCell LayoutRow">
+ <code class="CodeBlock"><s:List id="list">
+ <s:layout>
+ <s:HorizontalLayout gap="0" verticalAlign="justify"/>
+ </s:layout>
+ ...
+ </s:List></code>
+ </div>
+</div>
+<a name="articlecontentAdobe_text_3" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <p>This new MXML syntax has another benefit. All the layout-related properties for the container are naturally separated into the layout class. It's very convenient to go through all of the properties for a specific layout and use code hinting to figure out what's supported by that layout.</p>
+ <h4>Scrollbars</h4>
+ <p>The Spark containers Group and DataGroup are light-weight basic building block classes. Even though they support clipping and scrolling, they don't put up scrollbars automatically like MX does. Spark exposes lower-level APIs that allow for manual hook-up of scrollbars to Group and DataGroup<code>–clipAndEnableScrolling, horizontalScrollPosition, verticalScrollPosition, contentWidth, </code>and<code> contentHeight</code>. But there's also a higher-level component that facilitates this process. Wrapping any Group or DataGroup in a Scroller will enable clipping and scrolling, and the Scroller will take care of hooking up and displaying scrollbars when necessary:</p>
+</div>
+ </div>
+<a name="articlecontentAdobe_codeblock_1" style="visibility:hidden"></a><div class="parbase codeblock compbase section"><div class="PanelFillLight PanelBevelTop LayoutCell LayoutRow">
+ <code class="CodeBlock"> <s:Scroller width="200">
+ <s:Group>
+ <s:layout>
+ <s:HorizontalLayout gap="0" verticalAlign="justify"/>
+ </s:layout>
+ <s:Button label="one"/>
+ <s:Button label="two"/>
+ <s:Button label="three"/>
+ <s:Button label="four"/>
+ <s:Button label="five"/>
+ </s:Group>
+ </s:Scroller></code>
+ </div>
+</div>
+<a name="articlecontentAdobe_text_4" style="visibility:hidden"></a><div class="text parbase section"><div class="Semantic LayoutCellSides LayoutBreakAfter TextMedium TextBreak">
+ <p>In fact, that's exactly how scrolling is implemented for the rest of the Spark containers. Their skins contain a <code>contentGroup</code> or <code>dataGroup</code> part that is placed inside a Scroller. Take a look at the default List skin (the file <kbd>spark/skins/spark/ListSkin.mxml</kbd> comes with Flex 4):</p>
+</div>
+ </div>
+<a name="articlecontentAdobe_codeblock_2" style="visibility:hidden"></a><div class="parbase codeblock compbase section"><div class="PanelFillLight PanelBevelTop LayoutCell LayoutRow">
+ <code class="CodeBlock">...
+<!--- The Scroller component to add scroll bars to the list. -->
+<s:Scroller left="0" top="0" right="0" bottom="0" id="scroller" minViewportInset="1" focusEnabled="false">
+ <!--- The container for the data items. -->
+ <s:DataGroup id="dataGroup" itemRenderer="spark.skins.spark.DefaultItemRenderer
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