javafx: new & noteworthy - rain focus · pdf filetitle: javafx 9 - new and noteworthy...

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JavaFX:New&Noteworthy

KevinRushforth &JonathanGilesJavaClientGroupSeptember19,2016


SafeHarborStatementThefollowingisintendedtooutlineourgeneralproductdirection.Itisintendedforinformationpurposesonly,andmaynotbeincorporatedintoanycontract.Itisnotacommitmenttodeliveranymaterial,code,orfunctionality,andshouldnotberelieduponinmakingpurchasingdecisions.Thedevelopment,release,andtimingofanyfeaturesorfunctionalitydescribedforOracle’sproductsremainsatthesolediscretionofOracle.


Agenda

JDK8UpdateReleases

ComingupinJDK9

LookingbeyondJDK9– updatereleasesandJDK10

Q&A

1

2

3

4


JDK8UpdateReleases

6


JDK8UpdateReleases• TypicallyJDKupdatereleasesarenotintendedtobefeaturereleases• ForJavaFX,wehaveshippedsubstantialimprovements:– 8u20• 723bugsfixedand83enhancements

– 8u40• Accessibility,newcontrols(Spinner,FilteredText,Dialogs),LCDtextonCanvas,3Duser-definednormals.• 562bugsfixedand89enhancements

– 8u60• UpgradedtonewerWebKit,andimprovedHigh-DPIsupportonWindows.• 257bugsfixedand29enhancements

7


JDK8MaintenanceReleases• AlldevelopmenteffortisonJDK9• Nopost-8u60enhancementsforJDK8line• Afew criticalbugfixescanbebackportedtoourquarterlyreleases– 8u102releasedon19July2016– 8u112scheduledfor18Oct2016– 8u122scheduledfor17Jan2017– Etc.

8


ComingupinJDK9

9


ComingupinJavaFXinJDK9• Jigsawmodules– JavaFXisnowmodularized– Strongencapsulation– JEP253:PublicUIControlskinsandmoreCSSAPIs– NewAPIsforpreviouslynon-publicfeatures

• Otherimprovements:– HighDPI:Linuxsupport+APItoquery&controlscaling– JEP283:EnableGTK3onLinux– UpdatedGStreamer andWebKit– Smallerenhancements+Bugfixes


JigsawModularity

11


JigsawModularity• JigsawModularityisthe primaryfeatureforJDK9– JEP200:TheModularJDK (Umbrella)• JEP201:Modular SourceCode• JEP220:ModularRun-TimeImages• JEP260:Encapsulate MostInternal APIs• JEP261:ModuleSystem

• ModularizingJavaFXisourmaingoalforJDK9!– JDK-8092093:ModularizationsupportforJavaFX(Umbrella)– Thiswas(andis)averylargeeffort– Thelackofnon-Jigsaw-related‘big-ticket’featuresisaresult• Wedidaddseveral“smaller”enhancements(morelater)


JigsawModularity:PropertiesofModules• Amoduleisacollectionofpackages– Apackagebelongstoexactlyonemodule– Splitpackageshavelongbeendiscouraged;withmodulestheyareforbidden

• Amoduleisoneof:– Explicitmodule:amodulethatisdefinedbyamodule-info.javafile– Automatic(implicit)module:ajarfileonthemodule-pathwithoutamodule-info.java– Unnamedmodule:classesontheclasspath areinthe“unnamed”module

13


JigsawModularity:PropertiesofModules• Anexplicitmodulelistsitsinputs(requires)andoutputs(exports)initsmodule-info.javafile–Onlyexportedpackagesarevisible(moreonthislater)– Itcanonlyaccesspackagesfrommodulesthatitreads(requires)

• Anautomaticmoduleexportsallpackagesandreadsallmodulesandtheunnamedmodule– Usefulfortransitioningnon-modularapplications

• Theunnamedmodulealsoexportsallpackagesandreadsallmodules– Anexplicitmodulecannot“require”theunnamedmodule– Providescompatibility(noneedtoexplicitlylistthemodulesthatyouaccess)

14


JigsawModularity:PropertiesofModules

• Thejavalauncherloadsonlythetransitiveclosureofmodulesrequiredbytheapplication– Alldefaultmodulesloadedifyourapplicationmainclassisintheunnamedmodule

• javapackager canproduceabundledappwithonlyneededmodules

15


JigsawModularity:JavaFXModules• JavaFXsourcecodeisorganizedasmodules

16

modules/javafx.base/javafx.controls/javafx.graphics/...


JigsawModularity:JavaFXModules• JavaFXclassesandresourcesarelinkedintotheJDKimage– Nomorejfxrt.jar

• SWTinteropisstilldeliveredasaseparatejarfile:– Cannotbelinkedintoruntimeimagebecauseitdependsonthird-partyswt.jar– Itisan“automatic”module(meaningnomodule-info.class)– Renamedtojavafx-swt.jar(formerlyjfxswt.jar)• Automaticmodulenameisderivedas:javafx.swt

17


JDKModulesJREModules

JigsawModularity:JavaFXModules

18

Publicjavafx.basejavafx.controlsjavafx.fxmljavafx.graphicsjavafx.mediajavafx.swingjavafx.web

Publicjdk.packagerjdk.packager.services

Internaljavafx.deploy [closed]


JigsawModularity:JavaFXModules• JavaFXmodulegraphforruntime(JRE)modules:transitivereduction

19

javafx.graphics

javafx.controls

javafx.base

javafx.mediajavafx.fxml javafx.swing

javafx.web


JigsawModularity:JavaFXModules• AllJavaFXapplicationsrequirejavafx.graphics

20

javafx.graphics

javafx.controls

javafx.base


javafx.web


JigsawModularity:JavaFXModules• AllJavaFXUIapplicationsrequirejavafx.controls

21

javafx.graphics

javafx.controls

javafx.base


javafx.web


JigsawModularity:ApplicationImpact• Classesinnon-modularapplicationsareinthe“unnamed”module– Bydefault,theunnamedmodulereads(requires)allnamedmodulesinthesystem– Canaccesspublictypesinpubliclyexportedpackagesofallmoduleswithoutchanges

• Modularapplicationsneedtolisttheirdependenciesinmodule-info.java– Exportedpackagesofrequiredmodulesareaccessible– Hereisaminimalmodule-info.javaforanapplicationthatusesthejavafx.controls,javafx.graphics,andjavafx.base modules(controlsre-exportsgraphicsandbase)

22

module my.app {requires javafx.controls;

}


JigsawModularity:JavaFXPackages• Onlypubliclydocumentedpackagesareexported– Allareinthejavafx.* namespace

23

javafx.base modulepackage javafx.beans;package javafx.beans.binding;package javafx.beans.property;package javafx.beans.property.adapter;package javafx.beans.value;package javafx.collections;package javafx.collections.transformation;package javafx.event;package javafx.util;package javafx.util.converter;

javafx.controls modulepackage javafx.scene.chart;package javafx.scene.control;package javafx.scene.control.cell;package javafx.scene.control.skin;

javafx.fxml modulepackage javafx.fxml;


JigsawModularity:JavaFXPackages

24

javafx.graphics modulepackage javafx.animation;package javafx.application;package javafx.concurrent;package javafx.css;package javafx.css.converter;package javafx.geometry;package javafx.print;package javafx.scene;package javafx.scene.canvas;package javafx.scene.effect;package javafx.scene.image;package javafx.scene.input;package javafx.scene.layout;package javafx.scene.paint;package javafx.scene.shape;package javafx.scene.text;package javafx.scene.transform;package javafx.stage;

javafx.media modulepackage javafx.scene.media;

javafx.swing modulepackage javafx.embed.swing;

javafx.web modulepackage javafx.scene.web;


JigsawModularity:Availability• ChangesforJavaFXmodularityareinthemainOpenJFX repo:– http://hg.openjdk.java.net/openjfx/9-dev/rt

• StableearlyaccessJDK9buildsareavailableonjava.net:– https://jdk9.java.net/download/– Thesebuildsincludethejavafx.*modules

• EarlyaccessJigsawbuildsfromjake sandboxalsoonjava.net:– https://jdk9.java.net/jigsaw/– Thisincludes“workinprogress”proposedchangesforsetAccessible,etc.– Thesebuildsalsoincludethejavafx.*modules– Pleasedownloadthisandtestyourapplication!

25


StrongEncapsulation

OracleConfidential– Internal/Restricted/HighlyRestricted 26


EncapsulationofModules• Onlyexplicitlyexportedpackagesarevisible– Providesstrictencapsulationofimplementationdetails– Internal“API”isnolongeraccessible– Accessinganytypeinanon-exportedpackagewillresultinanerror• Andno,youcan’tsimplyusereflectiontocallsetAccessible• Thiscanbeoverriddenwith“--add-exports”commandlineswitchinextremeneed

• Withinexportedpackages,onlypublictypesareaccessible– Accessinganynon-publictypewillresultinanerror• Aswiththepreviouscase,youcan’tsimplyusereflectiontocallsetAccessible• Thiscanbeoverriddenwith“--add-exports-private ”commandlineswitchinextremeneed

27


EncapsulationofModules• Strongencapsulationmeansthesupported-nessofanAPIisclear:– Eachmodulethatyouaccesslistsitspubliclyexportedpackages– Aclassormethodyoucanaccesswithoutbreakingencapsulation(thatis,withoutusing--add-exports or –add-exports-private)ispartoftheAPI

– Noriskof“hidden”dependenciesoninternalmethods/implementationdetails

• Non-modularappsthatonlyusepublicAPIwillrununmodified• Somemodificationsmaybeneededwhenmigratingapptomodules

28


Encapsulation:ImpactonModularApplications• LaunchingaJavaFXApplication– TheJavaFXlauncherconstructsaninstanceofyourApplicationsubclass– ThismeansJavaFXmustbeabletoaccessthatclass– Youneedtoexportthecontainingpackagetojavafx.graphics (orpublicly)– Example:

module my.app {requires javafx.controls;

exports my.pkg to javafx.graphics;}


Encapsulation:ImpactonModularApplications• Annotatingnon-publictypeswith@FXML– FXMLneedsabilitytoaccessyourprivatefieldsandmethods– Youneedto“exports private”yourpackagetojavafx.fxml– Example:

module my.app {requires javafx.controls;requires javafx.fxml;

exports private my.pkg to javafx.fxml;}


ResourceEncapsulation:ImpactonModularApplications• Resourcesareencapsulatedsimilarlytoclasses• Class.getResource()willfindresourcesinmodulesifpackageisaccessible– Nomore“dippinginto”theinternalstoloadanothermodule’sresource

• ClassLoader.getResource()willnotfindresourcesinmodule– Amodularappcannotsimplyuse"/some/path/myresource.css"asstylesheetURL


ResourceEncapsulation:ImpactonModularApplications• JavaFXhasseveralAPIsthattakeaURL(orurl String)– CSSStylesheets– FXMLLoader– Image&Media–WebEngine

• Anon-modularappcancontinuetouseClassLoader-relativeURLs• ModularapplicationsshoulduseClass.getResource()instead


Encapsulationofimpl_“API”• JavaFXhasalwayshadpublicmethodsthatstartedwith‘impl_’,e.g.– Image.impl_getUrl() orContextMenu.impl_showRelativeToWindow()

• ThesewerehiddenfromAPIdocsandmarked@Deprecatedtoindicatethatapplicationsshouldnotusethem–Mostofthesewerejustimplementationdetails– Someweretherebecauseweweren’treadytocommittothemasfinalAPI

• Themodulesystemhidesnon-publicpackages,sowetooktheopportunitytocleanupourimpl_* APIsinJavaFX• Allimpl_* methodsaregone,butsomehavebecomepublicAPI


Othercompatibilityissues:• Nodebuilderclasses– DeprecatedinJDK8(andnotpartofAPIdocs)andslatedforremoval– RemovedfromJDK9(asofbuild51)

• JMXsupport–Weusedtoshipastandalonejavafx-mx.jarfilewiththeJDK(notJRE)–WasunsupportedinJDK8– RemovedfromJDK9(asofbuild111)– ItisstillbuiltaspartofOpenJFX incasedevelopersneedit


ImpactonJavaFXApplications:Summary• Allapplicationsneedtocheckandavoid:– UsinganyJavaFXcom.sun.*packageorimpl_method• Manyalreadyhaveapublicreplacement

– UsingsetAccessible toaccessnon-publictypes(eveninajavafx.*package)– AccesstoanyinternalJavaFXresources(e.g.,modena.css)– Nodebuilders

• Ifyouwanttomodularizeyourapplication,youalsoneedtoavoid:– UsingClassLoader.getResource (useClass.getResource instead)– Passing“classpath-relative”URLstringsforresourcesinyourmoduleintoCSS,etc.• Don’tdothis:scene.getStyleSheets().add("/path/to/my/resource/resource.css");


JEP253PrepareJavaFXUIControls&CSSAPIsforModularization

OracleConfidential– Internal/Restricted/HighlyRestricted 36


JDK8andEarlier::StateoftheNation::UIControls

JDK8shipswithapproximately64UIcontrols(orcriticalutilityclasses):

Accordion CheckMenuItem DateCell Labeled Pagination ScrollBar SplitPane TextField ToolBar

Alert ChoiceBox DatePicker ListCell PasswordField ScrollPane Tab TextInputControl Tooltip

Button ChoiceDialog Dialog ListView PopupControl Separator TableCell TextInputDialog TreeCell

ButtonBar ColorPicker DialogPane Menu ProgressBar SeparatorMenuItem TableColumn TitledPane TreeItem

Cell ComboBox Hyperlink MenuBar ProgressIndicator Slider TableView Toggle TreeTableCell

CheckBox ContextMenu IndexedCell MenuButton RadioButton Spinner TabPane ToggleButton TreeTableColumn

CheckBoxTreeItem CustomMenuItem Label MenuItem RadioMenuItem SplitMenuButton TextArea ToggleGroup TreeTableView

TreeView


JDK8andEarlier::StateoftheNation::UIControls• JavaFXnowhasafullcomplementofexpectedUIcontrols– “Widebutnotdeep”

• Weneedtoiterate:– fillgapsinfunctionality,– fixingbugs,– improvingsupportforthirdpartyUIcontrols


JDK8andEarlier::StateoftheNation::UIControls• SomereleasesaremotivatedbychangesbeyondUIcontrols,butrequiresignificantchangestocontrols:– JavaFX2.0:• MovingtoJava• Introductionof‘Region’

– JavaFX8.0:• MigratingtoLambdas

– JavaFX8u40:• Introductionofaccessibilitysupport

• JDK9:Modules


JDK8andEarlier::StateoftheNation::UIControls

TounderstandJEP253,weneedtounderstand:

HowareUIControlsbuilt?(Note:Iampresentingafullsessiononthisat5:30pmtoday)


JDK8andEarlier::StateoftheNation::UIControls• MostUIcontrolsaresplitintothreecomponents:

Control

Behavior

Skin


JDK8andEarlier::StateoftheNation::UIControls• MostUIcontrolsaresplitintothreecomponents:

Control

Behavior

Skin

PublicAPI(javafx.scene.control)

PrivateImplementation(com.sun.javafx.scene.control.*)


JDK8andEarlier::StateoftheNation::CSS

WealsoneedtoaskthesamequestionforCSSAPIs:

WhatCSSAPIsexist,andwherearetheyused?


CssMetaDataStyleableStyleablePropertySimpleStyleable*Property


Supportforcustomstyleable propertiescominginfromCSS,

e.g.–fx-custom-property: true;


CssMetaDataStyleableStyleablePropertySimpleStyleable*PropertyPseudoClass


Supportforcustompseudoclass states.

e.g..button:javaone {..

}


CssMetaDataStyleableStyleablePropertySimpleStyleable*PropertyPseudoClassParsedValueStyleOrigin


javafx.css



*ConverterUsedtoconvertCSSvaluesintoJavavalues,e.g.BooleanConverter converts‘true’or‘false’stringsintoBooleanvalues.



*ConverterCssParser

ImplementationandAPIresponsibleforconvertingcss syntaxintoaJavaFXCSSdatamodel.



*ConverterCssParserCSS data model:

CalculatedValueCascadingStyleCombinatorCssErrorDeclarationRule*Selector*SizeStyleStyleCacheStyleClassStyleMapStylesheet

Theactualdatamodel– i.e.theoutputfromtheCssParser class.Alargenumberofclasses…





StyleManager

com.sun.javafx.css


javafx.css


MotivationforJEP253• UIControlsandCSSAPIshavealwayshadpublicAPIand‘private’API–Manyprojectscan’tresisttheurgetousecom.sun.*API.– Alwaysfrownedupon,butneverprevented(andimpossibletopreventanyway).

• JDK9withJigsawmodularityisabiggamechanger:– UpuntilJDK9,developerscoulduseAPIincom.sun.*packages.– JDK9enforcesboundaries- com.sun.*becomesunavailable

• SomeJavaFXappsandlibrarieswillfailtocompile/executeunderJDK9.


MotivationforJEP253

Control

Behavior

Skin




MotivationforJEP253



StyleManager

com.sun.javafx.css


javafx.css


MotivationforJEP253• WhydopeopleneedtousetheseAPIs?

• Manyapplicationsneedfunctionalitywejusthaven’tgotaroundtomakingpublicyet!

• Manycustomcontrolsbasetheirskinsonexistingskins,e.g.– CustomTextFieldSkin extendsTextFieldSkin– TextFieldSkin nolongeravailableatcompiletime


MotivationforJEP253• JDK9moduleshasforcedourhand:–WeneedtomakepublicmoreAPI–Wecan’tdoeverything–WeneedtoidentifythemostimportantprivateAPI

• Currentapproachissplitintotwoprojects:– JEP253:UIControlsandCSSAPIs– ‘Smaller’JavaFXAPIs(discussedlater)


JDK9::Whatarewedoing• UsefulJEP253URLs:– http://openjdk.java.net/jeps/253– JDK-8076423 - Umbrellaproject

• JEP253issplitintotwosubprojects:1. JDK-8077916:MakeUIcontrolskinsintopublicAPIs2. JDK-8077918:ReviewandmakepublicrelevantCSSAPIs


JDK9::Whatarewedoing::ProgressReport• JDK-8077916:MakeUIcontrolskinsintopublicAPIs:• AllrelevantUIcontrolskinshavebeenmovedtojavafx.scene.control.skin

• Eachfilehasbeencleanedup:– codereorderedtofollowstandardlayoutstyle

– JavaDocs writtenforallpublicAPI

• Mostimportantly:thesizeoftheAPIperclasshasbeenreducedtobareessentials–WecangrowtheAPIinfuturereleasesbasedoncommunityfeedback(butwecannevershrinkit!)

• Overall:Essentiallythissubprojectiscomplete.CodeisnowinpublicJDK9reposforreview.


JEP253::PublicSkins::Summary

Control

Behavior

Skin




JEP253::PublicSkins::Summary

Control

Behavior

Skin

PublicAPI(javafx.scene.control) PrivateImplementation

(com.sun.javafx.scene.control.*)


JDK9::Whatarewedoing::ProgressReport• JDK-8077918:ReviewandmakepublicrelevantCSSAPIs• CoreCSSAPIshavebeenmadepublic,including– CSSdatamodel– Converters(forconvertingfromCSStextintoJava)– Parsers

• Overall:Essentiallythissubprojectiscomplete.CodeisnowinpublicJDK9reposforreview.


JEP253::Summary



StyleManager

com.sun.javafx.css


javafx.css


JEP253::Summary

CSS data model:CalculatedValueCascadingStyleCombinatorStyleCacheStyleMap

StyleManager

com.sun.javafx.css

CssMetaDataStyleableStyleablePropertySimpleStyleable*PropertyPseudoClassParsedValueStyleOriginCssParserCSS data model:

CssErrorDeclarationRule*Selector*SizeStyleStyleClassStylesheet

javafx.css

*Converter

javafx.css.converter


JDK9::Whatarewedoing::ProgressReport• Overall,JEP253is’finished’(barringinternaltesting):– AllcodehasbeenmergedintoJDK9mainrepoforoverayear

• It’scritical thatthecommunitytestandgivefeedbackonJDK9assoonaspossible!


JEP253::Summary• Freeside-effectofJEP253:–MoveclosertoprovidingafullAPIforthird-partyUIcontrols– Thishasbeenafeaturewe’vebeenwantingforaverylongtime–WenowhaveallcontrolsandskinsavailableaspublicAPI

– Nexttargetistomakebehaviors publicAPItoo• Willdiscusslaterinthispresentation…


OtherJDK9Enhancements

65


NewPublicAPIs

66


UnderstandingwhichprivateAPIsareinuse• InJune2015,wereachedouttothecommunityforhelp[1].• WeneededtounderstandwhatprivateAPIsweremostcommonlybeingused.• JDeps isatoolthatreportsdependenciesincode.• Wewroteasmallappthatwouldanalyseoutputfrom~twodozenprojects.– Ifyou’reinterested,runthefollowingcommand:

jdeps -v <jarfile> > <textfile>e.g.: jdeps -v SceneBuilder.jar > SceneBuilder.txt

• Insummary:someopensourceappsandsomecustomerappsbreak!

[1]http://mail.openjdk.java.net/pipermail/openjfx-dev/2015-June/017340.html


Overview• Resultsquiteclearlyindicatedmainareasforfurtheranalysis:– UIControlSkins– CSSAPIs– Toolkit/PlatformAPIs:• firingpulse,nestedeventloops,pulselistening,platformstartup

– Robot– PerformanceTracker


Overview• Resultsalsoshowedareaswheredevelopersweredoingthewrongthing

• E.g.BadAPI ProperAPI

com.sun.javafx.collections.ObservableListWrapper javafx.collections.FXCollections

com.sun.javafx.css.StyleConverterImpl javafx.css.StyleConverter

com.sun.javafx.css.PseudoClassState javafx.css.PseudoClass


FiringPulse• Sometimesanapplicationwantstobesureanotherpulsewillberun.

• NewAPIinPlatform:– public static void requestNextPulse();

• Ifnopulseisrunning,thiswillrunapulseatsomepointinthefuture,evenifnopulseisrequired.• Ifapulseisrunning,anotheronewillbescheduledonceitcompletes.


NestedEventLoop• Sometimesanapplicationwantstoprocesseventswithoutreturningfromthecurrentflowofcontrol• JavaFXinternallyusesnestedeventloopsinsomecases:– CallingshowAndWait onStageorDialog– Fordisplayingprinterdialogs

• NewAPIinPlatform:– public static Object enterNestedEventLoop(Object key);– public static void exitNestedEventLoop(Object key, Object rval);– public static boolean isNestedLoopRunning();


PulseListener• Someapplicationswantacallback duringthepulseforeachframe– UsingAnimationTimer providesasimilarcapability,butrunsbeforeCSSandlayout(andforcesacontinuouspulse)

• NewAPIinScene:– public final void addPreLayoutPulseListener(Runnable r);– public final void addPostLayoutPulseListener(Runnable r);

• Thisaddsalistener(Runnable)thatiscalledeveryframe– CalledafterCSSandeitherbefore(pre)orafter(post)layout– Calledbeforerendering• Changestoscenegrapharerenderedthisframe,butCSSisnotapplieduntilnextframe


PlatformStartup• TheJavaFXruntimeisinitializedinoneofthefollowingways:– Forstandardapplicationsthatextendjavafx.application.Application:• Running‘java MainClass’whereMainClass isasub-classofApplication• CallingApplication.launch tolaunchtheApplicationsub-class

– ForSwingapplicationthatuseJFXPanel:• ThefirsttimeaninstanceofJFXPanel isconstructed

– ForSWTapplicationsthatuseFXCanvas:• ThefirsttimeaninstanceofFXCanvas isconstructed

• Applicationsthatdon’tfitoneofthesepatternsoftenresorttocallingPlatformImpl.startup whichisnolongeraccessible


PlatformStartup• NewAPIonPlatform:– public static void startup(Runnable);

• StartstheJavaFXruntimeandthencallstherunmethodoftheRunnableontheJavaFXApplicationThread– ThestartupmethodreturnsbeforetheRunnableisrun

• MustnotbecallediftheJavaFXruntimehasalreadybeenstarted– CannotbeusedtorestarttheJavaFXruntimeafterithasterminated


Summary• Resultsquiteclearlyindicatedmainareasforfurtheranalysis:– UIControlSkins(JEP253)– CSSAPIs (JEP253)

– Toolkit/PlatformAPIs• firingpulse(AddedasPlatform.requestNextPulse())• nestedeventloops(AddedtoPlatform)• pulselistening(AddedtoScene)• Platformstartup (AddedtoPlatform)

– Robot(Toomuchwork,primaryusecaseistesting)

– PerformanceTracker(Toomuchwork)


Turningimpl_*methodsintopublicAPI• Allimpl_*methodsaregone...butasmallnumbertransitionedintofullpublicAPI:– FXMLLoader:LoadListener interface+set/getmethods– Image:getUrl()– KeyCode:getChar(),getCode()– GridPane:getRowCount(),getColumnCount(),getCellBounds(col,row)– Text,TextFlow:selection,caret,hittestAPIs–Window:getWindows()– FXCanvas:getFXCanvas()– TableColumnBase:reorderable property


HighDPI

77


HighDPI• JDK8u60hasthefollowingsupportforHigh-DPI:–Mac:forretinadisplay,integerscales(200%)–Windows:forHigh-DPIsettings>=150%– NoLinuxsupport– NoAPItoallowapplicationcontroloverHigh-DPIscaling• Renderingisalwaysdonewithanintegerscale• OnWindows,theblit tothescreenmightuseanon-integerscale


HighDPI• InJDK9weadded:– High-DPIsupportforLinux– High-DPIthresholdchangedto125%onWindows– APItogetthescreenscale– APItoforceintegerrenderscale(falsebydefault)– APItoset/gettherenderscale– Supportfor“snaptopixel”evenwhenusingnon-integerrenderscale


JEP283:EnableGTK3onLinux• FXwindow-toolkit(glass)usesGTK2inJDK8u60• Ubuntu16.04:GTK2nolongerpartoftypicalinstallation• SWT4.xusesGTK3bydefault– CannotloadGTK2andGTK3insameapplication– SWTisusuallyloadedbeforeFXisloaded

• FXglassandAWTtoolkitsupportbothGTK2(default)andGTK3– Auto-detectifGTK3isalreadyloadedandswitchtothat– Fail-overtoGTK3ifGTK2isnotpresentonsystem– Usejava–Djdk.gtk.version=3(or2)toforce


OtherJDK9Enhancements• JEP257:UpdatetonewerVersionofGStreamer– RequiresnewerversionofGLIBsosomeolderLinuxdistroswillnolongerwork

• UpdatedversionofWebKit– AlreadyupdatedonceforJDK9– Planningtoupdateatleastonemoretime…maybetwice– Goal:pickupbugfixesandperformanceimprovementsinamoretimelyfashion


OtherJDK9Enhancements• 102smallerenhancements,suchas:– Tooltip:Customizabletiming– ComboBox &Spinner:commitValue(),cancelEdit()– Spinner:addedpromptText property–Node:viewOrder property(user-specifiedrenderingorder)– Font:loadFonts()– Collections:viewIndexproperty– FXPermission:fine-grainedpermissions

• 756bugfixes!


LookingbeyondJDK9WhatmighthappeninJDK9updatereleasesandJDK10

83


FutureInvestigations• JDK9isnearlyfrozen!– FocusisshiftingtowardsJDK9updatereleasesandJDK10featureplanning

• Wearegatheringfeatureideasfromtheusualplaces(JBS,communityfeedback,internally,etc.)

• Disclaimer:Wehaven’tactuallystartedplanningyet,sowhatwe’rediscussingtodaymightchange!


FutureInvestigations• Platformimprovements:– JavaFX‘Desktop’API(noAWT)

• Scenegraph improvements:– PublicfocustraversalAPI– Newlayouts(e.g.Flexbox)

• Graphicsimprovements– Supportformulti-resolutionimages– Imagewriters– Updatedgraphicsrenderers– Interopwithplatformgraphics?

• Controlsimprovements:–MakeUIControlbehaviorspublic– UIControlActionsAPI– Extendedaccessibility(e.g.DatePicker)– TableView improvements(cellspanning,row/columnfreeze,commitonfocusloss)

– Draggable /detachabletabsinTabPane

• WebView improvements:–WebGL support– Accessibility


Whatdoyouwant?Wehaveanotepaduphereonthedesk.Attheendofthissession,takeamoment–letusknowwhatyouwanttoseeinfuturereleasesofJavaFX

86


UsefulJavaOne Sessions&BOFs

87


UsefulJavaOne Sessions

Title When Where

JavaFXLayouts Today@4:00pm Hilton—Imperial BallroomA

BuildingJavaFX UIControls Today@5:30pm Hilton—Imperial BallroomA

MeettheOracleJavaFXandJDKClientTeam Today@7:00pm Hilton—Imperial BallroomA

JavaFX ScenicView Today@8:00pm Hilton—Imperial BallroomA


UsefulJavaOne Sessions

Title When Where

ProjectJigsaw: UnderTheHood Tuesday@4:00pm Hilton—ContinentalBallroom 4

ProjectJigsawHackSession Wednesday@8:30am Hilton—Continental Ballroom4

The”Unsafe”Zone Wednesday@10:00am Hilton—Continental Ballroom5

PitfallsofMigratingProjectstoJDK9 Thursday@1:00pm Hilton—Continental Ballroom1/2/3


Q&A

javafx: new & noteworthy - rain focus · pdf filetitle: javafx 9 - new and noteworthy...

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