A Importância do JavaFX no Mercado Embedded

A importância do JavaFX
para o mercado Embedded
Bruno Borges
Principal Product Manager
Oracle Latin America

Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Insert Information Protection Policy Classification from Slide 13

Bruno Borges

Oracle Product Manager
Desenvolvedor, Gamer
Entusiasta em Java Embedded e JavaFX
Twitter: @brunoborges



Uso de PCs na Indústria



Peças antigas, custo alto de manutenção



Raspberry.Pi – Custo de US$ 35,00



Mercado para Embarcados



Interfaces Touch Screen



FX


DEMO
Projeto Ensemble



JavaFX 3D


Criando Formas e Materiais Primitivos



17

Colocando Textura em uma Esfera



18




19

DEMO
JavaFX 3D






21

JavaFX é o

sucessor do
Java Swing


Disponível para...
Windows, Linux, Mac OS X
E em Preview...
ARM*
Apple iOS* (usando RoboVM)
Android* (prototipo)
Standalone para Java 6
JavaFX 2.2 vem junto com JDK 7u6+
Parte do ClassPath a partir do Java SE 8



Arquitetura
Prism – renderização
Direct3D em Windows
OpenGL em Linux/Mac/Embedded
Public API
JavaFX API
Scene Graph



OpenJFX
JavaFX open sourced!
http://openjdk.java.net/projects/openjfx/



DEMO
App JavaFX escrita em Javascript



Criando sua
primeira aplicação
JavaFX



JavaFX Scene Builder 1.1 GA
bit.ly/javafxdownload



Your First JavaFX App for RaspberryPi





Scene
Graph


 Responsável pela UI
 Estrutura em Árvore
 Possui um nó raiz
 Vários nós branch e leaf

16

Scene Graph
Root Node – único sem um “parent”
Branch Node – deriva de javafx.scene.Parent
Pode possuir outros nós
Leaf Node – não possui filhos
Shapes, Images, Text, WebView, Media, Controls, Charts, etc...



Sua primeira aplicação JavaFX
public class MyApplication extends Application {
@Override
public void start(Stage stage) throws Exception {
URL fxml = getClass().getResource("MyApplication.fxml");
Parent root = FXMLLoader.load(fxml);
Scene scene = new Scene(root);
stage.setScene(scene);
stage.setFullScreen(true);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}



Properties no Swing
// Java Swing
private static final String VALUE_PROPERTY = "value";
private double value = 0;
public double getValue() { return value; }

public void setValue(double newValue) {
double oldValue = value;
value = newValue;
firePropertyChange(VALUE_PROPERTY, oldValue, value);
}


Properties no JavaFX
// JavaFX
DoubleProperty value = new SimpleDoubleProperty(0);
public double getValue() {
return value.get();
}
public void setValue(double newValue){
value.set(newValue);
}
public DoubleProperty valueProperty() {
return value;
}


Bindings
Binding unidirecional
bind();
Binding bi-direcional
bindBidirectional();



Bindings
IntegerProperty number1 = new SimpleIntegerProperty(1);
IntegerProperty number2 = new SimpleIntegerProperty(2);
DoubleProperty number3 = new SimpleDoubleProperty(0.5);
NumberBinding sum1 = number1.add(number2);
NumberBinding result1 = number1
.add(number2)
.multiply(number3);

NumberBinding sum2 = Bindings.add(number1, number2);
NumberBinding result2 = Bindings
.add(number1,
multiply(number2, number3));


Limite de Velocidade
60 FPS



DEMO
JavaFX com NetBeans 7.4



Suporte a Dispositivos Embedded



Raspberry Pi Configurations
for JavaFX applications

CPU Overclock
900~950MHz
Memory split
128MB for video
Framebuffer
framebuffer_width=1280
framebuffer_height=720



CPU Overclock

$ cat /proc/cpuinfo
Processor
: ARMv6-compatible processor rev 7 (v6l)
BogoMIPS
: 697.95
…
$ sudo raspi-config

bit.ly/raspioverclock



CPU Overclock

$ cat /proc/cpuinfo
Processor
: ARMv6-compatible processor rev 7 (v6l)
BogoMIPS
: 697.95
…
$ sudo raspi-config



Memory Split

128mb best
performance
64mb may work
$ sudo raspi-config



Video Framebuffer

Edit /boot/config.txt
Enable (uncomment) these options, with these values:
framebuffer_width=1280
framebuffer_height=720



Exiting a JavaFX Application on Raspberry.Pi

Connect over SSH and kill the java process
$ killall -9 java
Enable the debug environment variable to enable control-C exit command
$ export JAVA_DEBUG=1
$ java -cp Stopwatch.jar stopwatch.MainScreen



Final parameters for JavaFX on Raspy

Do not show virtual keyboard (optional)
-Dcom.sun.javafx.isEmbedded=false
Send video to the framebuffer (required!)
-Djavafx.platform=eglfb



Perguntas?


Obrigado!
@brunoborges



The preceding is intended to outline our 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 decisions. The
development, release, and timing of any features or functionality described for
Oracle’s products remains at the sole discretion of Oracle.



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