How to do it... in Java Insert Code39 in Java How to do it...

How to do it... use applet 39 barcode integrated toadd 3 of 9 barcode with java iPhone OS The next code snippet create Code 39 Extended for Java s a text cut-out effect using ShapeSubtract to apply constructive area geometry operation and the DropShadow class to provide depth. The full code listing can be found in ch03/source-code/src/effects/TextEffectDemo.fx.

. def w = 400; def h = 200; de f rw = w - 100; def rh = h - 50; def bg = Rectangle { x: w/2-rw/2 y: h/2-rh/2 width: rw height: rh fill: LinearGradient { startX: 0, endX: 0, startY: 0, endY: 1. 3 } } def text: Text = Text Code 39 Extended for Java { layoutX: bind (w - text.layoutBounds.width) / 2.

0 layoutY: bind (h - text.layoutBounds.height) / 2.

0 content: "Hello!" font: Font.font("Arial", FontWeight.BOLD, 100); fill: Color.

SILVER textOrigin: TextOrigin.TOP } def txtfx = ShapeSubtract { a: bg b: text effect: DropShadow { color: Color.rgb(0, 0, 0, 0.

9) offsetX: 5, offsetY: 5 radius: 10 } fill: LinearGradient { startX: 0, endX: 0, startY: 0, endY: 1 stops: [ Stop { offset: 0, color: Color.SILVER } Stop { offset: 1, color: Color.WHITE } ] } }.

When the code is rendered, it produces the text effect shown in the following screenshot. How it works... The code illustrates how you can combine the built-in visual effects available in JavaFX to create new customized effects. In this recipe, we use the ShapeSubtract, DropShadow, and LinearGradient to build the cut-out text effect seen in the previous screenshot. Let"s examine how this works.

. Transformations, Animations, and Effects Create the stencil first, we define a Rectangle instance (assigned to variable bg) from which the letters will be cut out. Next, we create the text shapes using a Text instance (assigned to variable text) that will be extruded from the rectangle shape. Cut text out to extract the text shapes from the rectangle, we use the ShapeSubtract class to apply a shape subtraction operation, extracting the node assigned to property a (the text node) from property b (the rectangle).

Apply effects subtracting the shapes from one another does not create the desired effect. To make the effect more realistic, we apply a DropShadow effect to the subtracted shape (rectangle with cutout letters). This adds depth to the text, making the letters stand out as if they were cut out of the rectangle.

To polish the effect, we apply a linear gradient to the surface of the rectangle giving it a dusty metallic look.. See also Adding depth with lighting and shadow effects Applying cool paint effects with gradients Adding visual appeal with the Reflection effect One of the appealing feature s of the Mac OS X operating system is its treatment of graphical reflection of objects on the desktop. As a modern development environment, JavaFX provides the tools and APIs to take advantage of popular effects, such as reflection. Before we conclude this chapter, we are going to explore how to use the Reflection class to create compelling graphical effects.

. Getting ready The Reflection effect can be found in the package javafx.scene.effect and is part of the Effect API covered in the recipe Adding depth with lighting and shadow effects.

If you are not familiar with how effects work in JavaFX, review that recipe.. How to do it... To keep things simple, the n ext code snippet shows you how to apply reflection effects to objects on the scene. You can see the full code listing from ch03/source-code/src/ effects/ReflectionEffect.fx.

. var grad = LinearGradient { startX: 0.0, startY: 0.0, endX: 0.0, endY: 1.0 proportional: true 3 stops: [ Stop { offset: 0 .0 color: Color.DARKBLUE }, Stop { offset: 1.

0 color: Color.LIGHTBLUE } ] } var reflect = Reflection { fraction: 0.50 topOpacity: 0.

50 bottomOpacity: 0.0 topOffset: 2.0 }; var rect = Rectangle { x:130 y:50 width:100, height:80 stroke:Color.

RED strokeWidth:2 arcHeight:10 arcWidth:10 fill:grad effect:reflect } var circ = Circle { centerX:290 centerY:75 radius:50 stroke:Color.BLUE strokeWidth:2 fill:grad effect:reflect }. When the code is executed it USS Code 39 for Java places a rectangle and a circle with a reflection on the stage, as shown in the next figure.. How it works... Reflection, in JavaFX, is ap Code 39 for Java plied as an effect to a visual node in the scene graph. By default, the Reflection class uses the original node, to which it is attached, as its input and renders a new image with a reflection at the bottom. The top portion of the rendered image is the node, and the bottom is the generated reflection.

The generated reflection is automatically blended with its surrounding"s color, providing a clean rendition of the reflection effect.. Transformations, Animations, and Effects For our example, we apply the reflection effect to a rectangle and a circle object. Both objects use a gradient paint against a black-filled scene. The Reflection class automatically blends the background color and the gradient from the original object to product a nice reflective effect.

The Reflection class makes several properties available that provide control over the way the reflections work. Here are some common properties that you may come across:.
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