exploring javafx 8 - oracleotndnld.oracle.co.jp/ondemand/javaday2014/pdf/a3-javaday...46 the...

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Exploring JavaFX 8

Stephen Chin (@steveonjava)

Java Technology Ambassador

JavaOne Content Chair

♯jdt2014_A3

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• Cross-platform Animation, Video, Charting

• Integrate Java, JavaScript, and HTML5 in the

same application

• New graphics stack takes advantage of hardware

acceleration for 2D and 3D applications

• Bidirectional integration with Swing applications

using JFXPanel and SwingNode

Immersive Application Experience

JavaFX Platform

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How to Get JavaFX

Step 1: Download Java 8

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How to Develop JavaFX Use Your Favorite IDE

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Architecture of JavaFX 8

Java Virtual Machine

Java2D Open GL D3D

Prism Glass

WinTk

Media

Engine

Web

Engine

JavaFX Public API

Quantum Toolkit

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Package Your Application Applets, Web Start, and Native Packaging

Good Better Best

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New Features in JavaFX 8

Controls

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DatePicker

Allows selection of dates

and ranges

Can use custom formats

and calendars

Supports Cascading Style

Sheets

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TreeTableView

Combines a TreeView and a

TableView

Optional menu for hiding and

showing columns

Root can be hidden

Supports multiple selection

Supports CSS

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New Modena UI Theme

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Build Applications Visually JavaFX Scene Builder 2

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Displaying HTML in JavaFX

public class WebViewTest extends Application {

public static void main(String[] args) {

launch(WebViewTest.class, args);

}

@Override public void start(Stage stage) {

WebView webView = new WebView();

webView.getEngine().load("http://google.com");

Scene scene = new Scene(webView);

stage.setScene(scene);

stage.setTitle("Web Test");

stage.show();

}}

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Displaying HTML in JavaFX

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Calling Javascript from JavaFX

String script = "alert('We have got a message, Houston!');”;

eng.executeScript(script);

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JavaScript to Java Type Conversion

JavaScript Java

null null

undefined “undefined”

number java.lang.Number (Integer or

Double)

string java.lang.String

boolean java.lang.Boolean

object netscape.javascript.JSObject

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Responding to Browser Events

Alert/Confirm/Prompt – Respond to JavaScript user interaction

functions

• Resize – Web page moves or resizes the window object

• Status – Web page changes the status text

• Visibility – Hide or show the window object

• Popup – Spawn a second web view/engine

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HTML5 Features

Canvas and SVG

Media playback

Form controls

History maintenance

Interactive element tags

DOM

Web workers*

Web sockets*

Web fonts*

* = new in HTML5

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The Java Conference Tour app

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JAVAFX 3D

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Mesh Geometry (3D Shapes)

■ Predefined shapes

■ Box

■ Cylinder

■ Sphere

■ User-defined shapes

■ Using TriangleMesh / MeshView

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https://wikis.oracle.com/display/OpenJDK/SphereAndBox.java

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Creating Primitive Shapes and Materials

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Rotating the 3D Shapes

Tip: Use lambda expressions as

shown here to simplify event handling

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3D Materials and Textures

■ PhongMaterial has these properties

■ Ambient color

■ Diffuse color, diffuse map

■ Specular color, specular map

■ Specular power

■ Bump map

■ Self-illumination map

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https://wikis.oracle.com/display/OpenJDK/3D+Features

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UV Mapping Textures to Shapes

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Tip: A texture is a 2D image to

be mapped on a 3D surface

Source: http://en.wikipedia.org/wiki/File:UVMapping.png

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Placing a Texture on a Sphere

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Placing a Texture on a Sphere

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UV Mapping on a Cube

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Understanding TriangleMesh

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8 points

12 faces

14 texCoords

12 faces

Image

0, 0

0, 1

1, 0

1, 1

Tip: Best practice

for texture map

dimensions is

powers of two

(e.g. 1024x512)

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Using TriangleMesh Points

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Tip: The API for points,

texCoords, and faces is

currently being modified,

primarily to hold this data

in different structures.

(For example)

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Using TriangleMesh Texture Coords

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(For example)

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Using TriangleMesh Faces

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0, 2, 1 are points[] indices

10, 5, 9 are texCoords[] indices

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Using TriangleMesh Smoothing Groups

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These are faces[] indices

(and putting all the pieces together of our user-defined shape)

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Real-World Example of Mesh Geometry

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3D Lights

■ Lights are nodes in the scene graph

■ PointLight

■ AmbientLight

■ Default light provided if no active lights

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https://wikis.oracle.com/display/OpenJDK/3D+Features

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Lights, Camera, Action!

Tip: The camera is also a node in

the scene graph, so it is moveable

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Have Java With Your Dessert Raspberry Pi

40 http://elinux.org/File:Raspi-Model-AB-Mono-2-699x1024.png

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Embedded Controls Theme

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Virtual Keyboard

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JavaFX on Raspberry Pi Gotchas

WebView Media

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And you can do cool stuff like this… https://bitbucket.org/stephanj/tweetwall

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Stephen Chin tweet: @steveonjava

blog: http://steveonjava.com

nighthacking.com

Real Geeks Live Hacking

NightHacking Tour

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