Java2D and G r oo v y , a Perfect Match Andres Almiray

Agenda What is G r oo v y? SwingBuilder GraphicsBuilder Putting it all together What’s next?

What is G r oo v y?

SwingBuilder

GraphicsBuilder

Putting it all together

What’s next?

W hat is G r oo v y ?

SwingBuilder

Builder Basics Builders are a form of a DSL Focused on Hierarchical Structures SwingBuilder is not the only Builder in G r oo v y XMLBuilder AntBuilder ObjectGraphBuilder Still Others… Swing applications follow a hierarchical model: Window Panel Button Builders are a perfect fit for making Swing UIs

Builders are a form of a DSL

Focused on Hierarchical Structures

SwingBuilder is not the only Builder in G r oo v y

XMLBuilder

AntBuilder

ObjectGraphBuilder

Still Others…

Swing applications follow a hierarchical model:

Window

Panel

Button

Builders are a perfect fit for making Swing UIs

A Quick HelloWorld Example groovy.swing.SwingBuilder.build { frame( id: 'root', title:'Hello World', show:true, pack:true) { flowLayout()‏ label('Enter a message:')‏ textField(id:'name', columns:20)‏ button('Click', actionPerformed: { ActionEvent e -> if (name.text)‏ optionPane().showMessageDialog( root, name.text)‏ })‏ } }

groovy.swing.SwingBuilder.build {

frame( id: 'root', title:'Hello World',

show:true, pack:true) {

flowLayout()‏

label('Enter a message:')‏

textField(id:'name', columns:20)‏

button('Click',

actionPerformed: { ActionEvent e ->

if (name.text)‏

optionPane().showMessageDialog(

root, name.text)‏

})‏

}

}

What's going on? Each node is syntactically a method call All of these method calls are dynamically dispatched Most don’t actually exist in bytecode Child closures create hierarchical relations Child widgets are added to parent containers SwingBuilder node names are derived from Swing classes Remove the leading ‘J’ from a Swing class when present SwingBuilder also supports some AWT classes like layouts

Each node is syntactically a method call

All of these method calls are dynamically dispatched

Most don’t actually exist in bytecode

Child closures create hierarchical relations

Child widgets are added to parent containers

SwingBuilder node names are derived from Swing classes

Remove the leading ‘J’ from a Swing class when present

SwingBuilder also supports some AWT classes like layouts

GraphicsBuilder

GraphicsBuilder - Basics GraphicsBuilder is to Java2D what SwingBuilder is to Swing It produces a hierarchy of GraphicsOperations (or nodes)‏ A specialized component is required to render graphicsOperations and handle input events: GraphicsPanel

GraphicsBuilder is to Java2D what SwingBuilder is to Swing

It produces a hierarchy of GraphicsOperations (or nodes)‏

A specialized component is required to render graphicsOperations and handle input events: GraphicsPanel

GraphicsBuilder - Features shapes - shape, outline, areas regular Java2D shapes from java.wt.geom additional shapes from jSilhouette paints - solid, gradients, composite strokes - from jhlabs filters - from swingx, jhlabs grouping, transfortmations , images svg - import/export via Batik swf - partial export (still experimental)‏

shapes - shape, outline, areas

regular Java2D shapes from java.wt.geom

additional shapes from jSilhouette

paints - solid, gradients, composite

strokes - from jhlabs

filters - from swingx, jhlabs

grouping, transfortmations , images

svg - import/export via Batik

swf - partial export (still experimental)‏

GraphicsPad

Putting it all together

Mixing Swing & Graphics Use SwingBuilder to build the UI Use GraphicsBuilder to draw anywhere you need in a GraphicsPanel in JLayeredPane in SwingX layered components in Jide’s overlay support

Use SwingBuilder to build the UI

Use GraphicsBuilder to draw anywhere you need

in a GraphicsPanel

in JLayeredPane

in SwingX layered components

in Jide’s overlay support

Tips & Hints Use SwingBuilder.build()‏ Use Expando for quick prototyping of beans Use ObservableMap for quick binding tests Reuse shapes as must as you can Group operations that may have the same settings applied (color, borderWidth, fill, transformations)‏

Use SwingBuilder.build()‏

Use Expando for quick prototyping of beans

Use ObservableMap for quick binding tests

Reuse shapes as must as you can

Group operations that may have the same settings applied (color, borderWidth, fill, transformations)‏

What’s next?

Tips & Hints Custom nodes Custom painting of Swing components Animation support

Custom nodes

Custom painting of Swing components

Animation support

Resources h tt p : // groovy.codehaus.org h tt p : // groovy.codehaus.org/Swing+Builder h tt p : // groovy.codehaus.org/SwingXBuilder h tt p : // groovy.codehaus.org/JideBuilder h tt p : // groovy.codehaus.org/GraphicsBuilder h tt p : // code.google.com/p/jsilhouette h tt p : // jroller.com/aalmiray h tt p : // twitter.com/aalmiray

h tt p : // groovy.codehaus.org

h tt p : // groovy.codehaus.org/Swing+Builder

h tt p : // groovy.codehaus.org/SwingXBuilder

h tt p : // groovy.codehaus.org/JideBuilder

h tt p : // groovy.codehaus.org/GraphicsBuilder

h tt p : // code.google.com/p/jsilhouette

h tt p : // jroller.com/aalmiray

h tt p : // twitter.com/aalmiray

Q & A

Thank you!