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JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
JavaFX Your Way - Devoxx Version
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JavaFX Your Way - Devoxx Version

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Updated version of the JavaFX Your Way talk for Devoxx. This includes additional JavaFX 2.0 API changes and an example of some Fantom code snippets.

Updated version of the JavaFX Your Way talk for Devoxx. This includes additional JavaFX 2.0 API changes and an example of some Fantom code snippets.

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  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • There are two kinds of listener: ‘changedListener’ and ‘ChangingListener’. Being informed of the change before it happens allow for it to be vetoed.
    It is also possible to either watch a single property, or all properties belonging to a bean.
    Note that the value passed to the callback is the old value. This is to ensure that we aren’t eagerly computing the new value when it might not be required. To get the new value, you can call the function on the bean or via the propertyReference
  • Slight conversion to Groovy. This can be compiled by the Groovy compiler and run, but basically there is only one line difference (the ‘static void main’ line)
  • This is the same code as the previous slide, taking advantage of some of the Groovy syntax tricks. This is getting to look a lot more like JavaFX Script.
  • This DSL handles running on the EDT, and can actually be run as-is – there is no need for a class declaration, or anything else to ensure that we’re on the EDT. This is getting us fairly close to the simple JavaFX Script at the beginning
  • This DSL handles running on the EDT, and can actually be run as-is – there is no need for a class declaration, or anything else to ensure that we’re on the EDT. This is getting us fairly close to the simple JavaFX Script at the beginning
  • Transcript

    • 1. JavaFX Your Way Building JavaFX Applications with Alternative Languages Stephen Chin GXS steveonjava@gmail.com tweet: @steveonjava Jonathan Giles Oracle Jonathan.giles@oracle.com tweet: @jonathangiles
    • 2. Meet the Presenters… Steve Jonathan 2 Family Man A reasonable facsimile of… Motorcyclist
    • 3. Challenge the Presenter…
    • 4. Challenge the Presenter…
    • 5. Disclaimer: This is proof of concept
    • 6. THE FOLLOWING IS INTENDED TO OUTLINE ORACLE’S GENERAL PRODUCT DIRECTION. IT IS INTENDED FOR INFORMATION PURPOSES ONLY, AND MAY NOT BE INCORPORATED INTO ANY CONTRACT. IT IS NOT A COMMITMENT TO DELIVER ANY MATERIAL, CODE, OR FUNCTIONALITY, AND SHOULD NOT BE RELIED UPON IN MAKING PURCHASING DECISION. THE DEVELOPMENT, RELEASE, AND TIMING OF ANY FEATURES OR FUNCTIONALITY DESCRIBED FOR ORACLE'S PRODUCTS REMAINS AT THE SOLE DISCRETION OF ORACLE.
    • 7. Disclaimer #2: This is code-heavy
    • 8. Overall Presentation Goal Demonstrate the future potential of the JavaFX platform.
    • 9. Agenda > JavaFX 2.0 Announcement > JavaFX in Java > Explore alternative languages  JRuby  Clojure  Groovy  Scala  +???
    • 10. JavaFX 2.0 Announcement • JavaFX Script is no longer required to write JavaFX applications • Benefits: – Easier integration with business logic on JVM – Access to generics, annotations, (closures), etc – Java has great IDE support • Downsides: – JavaFX Script was kind to us
    • 11. JavaFX With Java
    • 12. JavaFX in Java > JavaFX API follows JavaBeans approach > Similar in feel to other UI toolkits (Swing, etc.) > Researching approaches to minimize boilerplate
    • 13. Binding > Unquestionably the biggest JavaFX Script innovation > Will be supported via a PropertyBinding class > Lazy invocation for high performance > Static construction syntax for simple cases  e.g.: bindTo(<property>)
    • 14. Observable Pseudo-Properties > Supports watching for changes to properties > Implemented via anonymous inner classes > Will take advantage of closures in the future
    • 15. Observable Pseudo-Properties Rectangle rect = new Rectangle(); rect.setX(40); rect.setY(40); rect.setWidth(100); rect.setHeight(200); rect.addChangedListener(Rectangle.HOVER, new Listener() { });
    • 16. Observable Pseudo-Properties Rectangle rect = new Rectangle(); rect.setX(40); rect.setY(40); rect.setWidth(100); rect.setHeight(200); rect.addChangedListener(Rectangle.HOVER, new Listener() { }); The property we want to watch
    • 17. Observable Pseudo-Properties Rectangle rect = new Rectangle(); rect.setX(40); rect.setY(40); rect.setWidth(100); rect.setHeight(200); rect.addChangedListener(Rectangle.HOVER, new Listener() { }); Only one listener used regardless of data type
    • 18. Observable Pseudo-Properties Rectangle rect = new Rectangle(); rect.setX(40); rect.setY(40); rect.setWidth(100); rect.setHeight(200); rect.addChangedListener(Rectangle.HOVER, new Listener() { public void handle(Bean bean, PropertyReference pr) { } }); Rectangle is a Bean
    • 19. Observable Pseudo-Properties Rectangle rect = new Rectangle(); rect.setX(40); rect.setY(40); rect.setWidth(100); rect.setHeight(200); rect.addChangedListener(Rectangle.HOVER, new Listener() { public void handle(Bean bean, PropertyReference pr) { } }); Refers to the Rectangle.hover ‘property’
    • 20. Observable Pseudo-Properties Rectangle rect = new Rectangle(); rect.setX(40); rect.setY(40); rect.setWidth(100); rect.setHeight(200); rect.addChangedListener(Rectangle.HOVER, new Listener() { public void handle(Bean bean, PropertyReference pr) { rect.setFill(rect.isHover() ? Color.GREEN : Color.RED); } });
    • 21. Sequences in Java > Replaced with an Observable List > Public API is based on JavaFX sequences > Internal code can use lighter collections API > JavaFX 2.0 will also have an Observable Map
    • 22. Example Application public class HelloStage implements Runnable { public void run() { Stage stage = new Stage(); stage.setTitle("Hello Stage"); stage.setWidth(600); stage.setHeight(450); Scene scene = new Scene(); scene.setFill(Color.LIGHTGREEN); stage.setScene(scene); stage.setVisible(true); } public static void main(String[] args) { FX.start(new HelloStage()); } }
    • 23. Summary > The JVM has a modern UI toolkit coming to it > Total port to Java – no hacks or kludges > Many languages to choose from > Alternate languages == exciting possibilities > Choose the best language for your needs
    • 24. Major Question 24 How can alternative languages make developing JavaFX user interfaces easier & more productive?
    • 25. JavaFX With JRuby
    • 26. Why JRuby? > Direct access to Java APIs > Dynamic Typing > Closures > ‘Closure conversion’ for interfaces
    • 27. Java in JRuby - Accessing Properties timeline.setAutoReverse(true) timeline.autoReverse = true timeline.auto_reverse = true timeline.getKeyFrames().add(kf) timeline.key_frames.add(kf) timeline.key_frames.add kf
    • 28. JRuby Example 1: Simple Stage require 'java' FX = Java::javafx.lang.FX Stage = Java::javafx.stage.Stage Scene = Java::javafx.scene.Scene Color = Java::javafx.scene.paint.Color class HelloStage include java.lang.Runnable def run ..... end end FX.start(HelloStage.new); stage = Stage.new stage.title = 'Hello Stage (JRuby)' stage.width = 600 stage.height = 450 scene = Scene.new scene.fill = Color::LIGHTGREEN stage.scene = scene stage.visible = true;
    • 29. JRuby Example 2 rect = Rectangle.new rect.x = 25 rect.y = 40 rect.width = 100 rect.height = 50 rect.fill = Color::RED scene.content.add(rect) timeline = Timeline.new timeline.repeat_count = Timeline::INDEFINITE timeline.auto_reverse = true kv = KeyValue.new(rect.x(), 200); kf = KeyFrame.new(Duration.valueOf(500), kv); timeline.key_frames.add kf; timeline.play();
    • 30. JRuby Closure Conversion rect.add_changed_listener(Rectangle::HOVER) do |bean, pr| rect.fill = rect.hover ? Color::GREEN : Color::RED; end 30
    • 31. JRuby Swiby require 'swiby' class HelloWorldModel attr_accessor :saying end model = HelloWorldModel.new model.saying = "Hello World" Frame { title "Hello World“ width 200 content { Label { text bind(model,:saying) } } visible true } 31
    • 32. 32 JavaFX With Clojure Artwork by Augusto Sellhorn http://sellmic.com/
    • 33. A Little About Clojure > Started in 2007 by Rich Hickey > Functional Programming Language > Derived from LISP > Optimized for High Concurrency > … and looks nothing like Java! 33 (def hello (fn [] "Hello world")) (hello)
    • 34. Clojure Syntax in One Slide Symbols > numbers – 2.178 > ratios – 355/113 > strings – “clojure”, “rocks” > characters – a b c d > symbols – a b c d > keywords – :alpha :beta > boolean – true, false > null - nil Collections (commas optional) > Lists (1, 2, 3, 4, 5) > Vectors [1, 2, 3, 4, 5] > Maps {:a 1, :b 2, :c 3, :d 4} > Sets #{:a :b :c :d :e} 34 (plus macros that are syntactic sugar wrapping the above)
    • 35. Clojure GUI Example (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (.setFill scene Color/LIGHTGREEN) (.setWidth stage 600) (.setHeight stage 450) (.setScene stage scene) (.setVisible stage true))) (javafxapp) 35
    • 36. Clojure GUI Example (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (.setFill scene Color/LIGHTGREEN) (.setWidth stage 600) (.setHeight stage 450) (.setScene stage scene) (.setVisible stage true))) (javafxapp) 36 Create a Function for the Application
    • 37. Clojure GUI Example (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (.setFill scene Color/LIGHTGREEN) (.setWidth stage 600) (.setHeight stage 450) (.setScene stage scene) (.setVisible stage true))) (javafxapp) 37 Initialize the Stage and Scene Variables
    • 38. Clojure GUI Example (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (.setFill scene Color/LIGHTGREEN) (.setWidth stage 600) (.setHeight stage 450) (.setScene stage scene) (.setVisible stage true))) (javafxapp) 38 Call Setter Methods on Scene and Stage
    • 39. Clojure GUI Example (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (.setFill scene Color/LIGHTGREEN) (.setWidth stage 600) (.setHeight stage 450) (.setScene stage scene) (.setVisible stage true))) (javafxapp) 39 Java Constant Syntax Java Method Syntax
    • 40. Simpler Code Using doto (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (doto scene (.setFill Color/LIGHTGREEN)) (doto stage (.setWidth 600) (.setHeight 450) (.setScene scene) (.setVisible true)))) (javafxapp) 40
    • 41. Simpler Code Using doto (defn javafxapp [] (let [stage (Stage. "JavaFX Stage") scene (Scene.)] (doto scene (.setFill Color/LIGHTGREEN)) (doto stage (.setWidth 600) (.setHeight 450) (.setScene scene) (.setVisible true)))) (javafxapp) 41 doto form: (doto symbol (.method params)) equals: (.method symbol params)
    • 42. Refined Clojure GUI Example (defn javafxapp [] (doto (Stage. "JavaFX Stage") (.setWidth 600) (.setHeight 450) (.setScene (doto (Scene.) (.setFill Color/LIGHTGREEN) (.setContent (list (doto (Rectangle.) (.setX 25) (.setY 40) (.setWidth 100) (.setHeight 50) (.setFill Color/RED)))))) (.setVisible true))) (javafxapp) 42
    • 43. Refined Clojure GUI Example (defn javafxapp [] (doto (Stage. "JavaFX Stage") (.setWidth 600) (.setHeight 450) (.setScene (doto (Scene.) (.setFill Color/LIGHTGREEN) (.setContent (list (doto (Rectangle.) (.setX 25) (.setY 40) (.setWidth 100) (.setHeight 50) (.setFill Color/RED)))))) (.setVisible true))) (javafxapp) 43 Let replaced with inline declarations
    • 44. Refined Clojure GUI Example (defn javafxapp [] (doto (Stage. "JavaFX Stage") (.setWidth 600) (.setHeight 450) (.setScene (doto (Scene.) (.setFill Color/LIGHTGREEN) (.setContent (list (doto (Rectangle.) (.setX 25) (.setY 40) (.setWidth 100) (.setHeight 50) (.setFill Color/RED)))))) (.setVisible true))) (javafxapp) 44 Doto allows nested data structures
    • 45. Refined Clojure GUI Example (defn javafxapp [] (doto (Stage. "JavaFX Stage") (.setWidth 600) (.setHeight 450) (.setScene (doto (Scene.) (.setFill Color/LIGHTGREEN) (.setContent (list (doto (Rectangle.) (.setX 25) (.setY 40) (.setWidth 100) (.setHeight 50) (.setFill Color/RED)))))) (.setVisible true))) (javafxapp) 45 Now a nested Rectangle fits!
    • 46. Closures in Clojure 46 > Inner classes can be created using proxy (.addChangeListener rect Rectangle/HOVER (proxy [BooleanListener] [] (handle [b, p, o] (.setFill rect (if (.isHover rect) Color/GREEN Color/RED)))))
    • 47. Closures in Clojure > Inner classes can be created using proxy 47 (.addChangeListener rect Rectangle/HOVER (proxy [Listener] [] (handle [b, p] (.setFill rect (if (.isHover rect) Color/GREEN Color/RED))))) Proxy form: (proxy [class] [args] fs+) f => (name [params*] body)
    • 48. JavaFX With Groovy
    • 49. Features of Groovy > Tight integration with Java  Very easy to port from Java to Groovy > Declarative syntax  Familiar to JavaFX Script developers > Builders
    • 50. Example 1: Simple FX Script to Groovy
    • 51. Step 1: Lazy conversion to Groovy class HelloStage implements Runnable { void run() { Stage stage = new Stage(); stage.setTitle("Hello Stage (Groovy)“); stage.setWidth(600); stage.setHeight(450); Scene scene = new Scene(); scene.setFill(Color.LIGHTSKYBLUE); stage.setScene(scene); stage.setVisible(true); } static void main(args) { FX.start(new HelloStage()); } }
    • 52. Step 2: Slightly More Groovy class HelloStage implements Runnable { void run() { new Stage( title: "Hello Stage (Groovy)", width: 600, height: 450, visible: true, scene: new Scene( fill: Color.LIGHTSKYBLUE, ) ); } static void main(args) { FX.start(new HelloStage()); } }
    • 53. Slight Aside: Groovy Builders > Groovy builders make writing custom DSLs easy > For the next slide, I am using a builder I defined > Hopefully the community will improve upon this
    • 54. Step 3: Using a Groovy Builder FxBuilder.build { stage = stage( title: "Hello World", width: 600, height: 450, scene: scene(fill: Color.LIGHTSKYBLUE) { ... } ) stage.visible = true; }
    • 55. Step 4: With Content FxBuilder.build { stage = stage( title: "Hello Rectangle (Groovy FxBuilder 2)", width: 600, height: 450, scene: scene(fill: Color.LIGHTSKYBLUE) { rectangle( x: 25, y: 40, width: 100, height: 50, fill: Color.RED ) } ) stage.visible = true; }
    • 56. Example 2: FX Script Animation in Groovy
    • 57. Step 1: JavaFX Script def timeline = Timeline { repeatCount: Timeline.INDEFINITE autoReverse: true keyFrames: [ KeyFrame { time: 750ms values : [ rect1.x => 200.0 tween Interpolator.LINEAR, rect2.y => 200.0 tween Interpolator.LINEAR, circle1.radius => 200.0 tween Interpolator.LINEAR ] } ]; } timeline.play();
    • 58. Step 1a: JavaFX Script Simplification def timeline = Timeline { repeatCount: Timeline.INDEFINITE autoReverse: true keyFrames: at (750ms) { rect1.x => 200.0 tween Interpolator.LINEAR; rect2.y => 200.0 tween Interpolator.LINEAR; circle1.radius => 200.0 tween Interpolator.LINEAR; } } timeline.play();
    • 59. Step 2: Java-ish Groovy Animations final Timeline timeline = new Timeline( repeatCount: Timeline.INDEFINITE, autoReverse: true ) final KeyValue kv1 = new KeyValue (rect1.x(), 200); final KeyValue kv2 = new KeyValue (rect2.y(), 200); final KeyValue kv3 = new KeyValue (circle1.radius(), 200); final KeyFrame kf = new KeyFrame(Duration.valueOf(750), kv1, kv2, kv3); timeline.getKeyFrames().add(kf); timeline.play();
    • 60. Step 3: JavaFX Animation in Groovy (Using Builders) timeline = timeline(repeatCount: Timeline.INDEFINITE, autoReverse: true) { keyframes { keyframe(time: 750) { keyvalue(target: rect1.y(), endValue: 200); keyvalue(target: rect2.x(), endValue: 200); keyvalue(target: circle1.radius(), endValue: 200); } } } timeline.play();
    • 61. Groovy Closures - With interface coercion def f = { bean, pr -> rect.setFill(rect.isHover() ? Color.GREEN : Color.RED); } as Listener; rect.addChangedListener(Rectangle.HOVER, f);
    • 62. 62 JavaFX With Scala
    • 63. What is Scala > Started in 2001 by Martin Odersky > Compiles to Java bytecodes > Pure object-oriented language > Also a functional programming language 2001 • Scala Started 2003/2004 • Scala v1.0 2006 • Scala v2.0 2010 • Scala 2.8.0 (latest) 63
    • 64. Why Scala? > Shares many language features with JavaFX Script that make GUI programming easier:  Static type checking – Catch your errors at compile time  Closures – Wrap behavior and pass it by reference  Declarative – Express the UI by describing what it should look like > Scala also supports DSLs! 64
    • 65. Java vs. Scala DSL public class HelloStage implements Runnable { public void run() { Stage stage = new Stage(); stage.setTitle("Hello Stage"); stage.setWidth(600); stage.setHeight(450); Scene scene = new Scene(); scene.setFill(Color.LIGHTGREEN); Rectangle rect = new Rectangle(); rect.setX(25); rect.setY(40); rect.setWidth(100); rect.setHeight(50); rect.setFill(Color.RED); stage.add(rect); stage.setScene(scene); stage.setVisible(true); } public static void main(String[] args) { FX.start(new HelloStage()); } } object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } 65 22 Lines 545 Characters 17 Lines 324 Characters
    • 66. object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } 66
    • 67. 67 object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } Base class for JavaFX applications
    • 68. 68 object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } Declarative Stage definition
    • 69. 69 object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } Inline property definitions
    • 70. 70 object HelloJavaFX extends JavaFXApplication { def stage = new Stage { title = "Hello Stage" width = 600 height = 450 scene = new Scene { fill = Color.LIGHTGREEN content = List(new Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED }) } } } List Construction Syntax
    • 71. Animation in Scala def timeline = new Timeline { repeatCount = INDEFINITE autoReverse = true keyFrames = List( new KeyFrame(50) { values = List( new KeyValue(rect1.x() -> 300), new KeyValue(rect2.y() -> 500), new KeyValue(rect2.width() -> 150) ) } ) } 71
    • 72. Animation in Scala 72 Duration set by Constructor Parameter def timeline = new Timeline { repeatCount = INDEFINITE autoReverse = true keyFrames = List( new KeyFrame(50) { values = List( new KeyValue(rect1.x() -> 300), new KeyValue(rect2.y() -> 500), new KeyValue(rect2.width() -> 150) ) } ) }
    • 73. Animation in Scala 73 Operator overloading for animation syntax def timeline = new Timeline { repeatCount = INDEFINITE autoReverse = true keyFrames = List( new KeyFrame(50) { values = List( new KeyValue(rect1.x() -> 300), new KeyValue(rect2.y() -> 500), new KeyValue(rect2.width() -> 150) ) } ) }
    • 74. Closures in Scala 74 > Closures are also supported in Scala > And they are 100% type-safe rect.addChangedListener(Node.HOVER, (b, p, o) => { rect.fill = if (rect.hover) Color.GREEN else Color.RED })
    • 75. Closures in Scala > Closures are also supported in Scala > And they are 100% type-safe 75 rect.addChangedListener(Node.HOVER, (b, p) => { rect.fill = if (rect.hover) Color.GREEN else Color.RED }) Compact syntax (params) => {body} rect.addChangedListener(Node.HOVER, (b, p) => { rect.fill = if (rect.hover) Color.GREEN else Color.RED })
    • 76. Other JVM Languages to Try > Jython  Started by Jim Hugunin  High Performance Python > Mirah  Invented by Charles Nutter  Originally called Duby  Local Type Inference, Static and Dynamic Typing > Fantom  Created by Brian and Andy Frank  Originally called Fan  Built-in Declarative Syntax  Portable to Java and .NET  Local Type Inference, Static and Dynamic Typing 76
    • 77. Fantom Code Example Void main() { Stage { title = "Hello Stage" width = 600 height = 450 Scene { fill = Color.LIGHTGREEN Rectangle { x = 25 y = 40 width = 100 height = 50 fill = Color.RED } } }.open } 77
    • 78. timeline := Timeline { repeatCount = Timeline.INDEFINITE autoReverse = true KeyFrame { time = 50ms KeyValue(rect1.x() -> 300), KeyValue(rect2.y() -> 500), KeyValue(rect2.width() -> 150) } } Animation in Fantom 78 Fantom has a built-in Duration type And also supports operator overloading
    • 79. Announcing Project Visage 79 > Visage project goals:  Compile to JavaFX Java APIs  Evolve the Language (Annotations, Maps, etc.)  Support Other Toolkits > Come join the team! > For more info: http://visage-lang.org/ > “Visage is a domain specific language (DSL) designed for the express purpose of writing user interfaces.”
    • 80. How about JavaFX on… Visage Stage { title: "Hello Stage" width: 600 height: 450 Scene { fill: Color.LIGHTGREEN Rectangle { x: 25 y: 40 width: 100 height: 50 fill: Color.RED } } } 80
    • 81. Visage Android Workshop Today @ 21:00 – 22:00 Room: BOF 2 Description: Bring your Android device and learn how to build and deploy Android market applications using the Visage language. Prizes will be awarded for finding defects and helping the dev team make Visage better. 81
    • 82. Conclusion > JavaFX as Java APIs is great > Usable in alternate languages > Over time improved support is possible  Groovy Builders, Scala DSL, Visage Remember: This is a proof of concept only – you can not leave this session and do this today.
    • 83. 83 Stephen Chin steveonjava@gmail.com tweet: @steveonjava Jonathan Giles Jonathan.giles@oracle.com tweet: @jonathangiles Presentation will be posted at: http://steveonjava.com/

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