JavaFX Fundamentals - Java 8 Recipes - page 520

flection values range from zero (0%) to one (100%). The following code snippet imple-
ments a reflection of 80% with a float value of 0.8f:
Reflection refl = new Reflection();
refl.setFraction(0.8f);
java8Recipes5.setEffect(refl);
Solution 2 demonstrates how to construct a user interface using FXML, CSS, and
Java. While this recipe focuses on text and fonts, it is important to note that FXML
solutions clearly follow a model-view-controller standard, separating UI code from
business logic. It is also important to note that if the UI in this example were to contain
buttons or other nodes that contained actions, a controller class would need to be cre-
ated as well to embody the action logic.
In the second example, an FXML file contains the structured layout for the user in-
terface, which consists of a Scene , Pane , TextFlow , and a series of Text nodes.
The scene contains a <stylesheets> element, which is used to specify which style
sheets to apply to the elements within the XML. The Pane node is used as a base for
the layout, and it contains each of the other nodes within the UI. The TextFlow node
is new in JavaFX 8, and it is a special layout that is designed to lay out rich text. The
TextFlow can lay many different Text nodes into a single flow.
As you can see from the FXML, each of the Text nodes within the TextFlow
have different styles associated with them, based on those styles that have been defined
within the attached style sheet. The properties for styles in JavaFX style sheets are pre-
ceded by -fx- , and property names and values are separated by a colon and termin-
ated by a semicolon ( ; ). For the most part, JavaFX style properties align nicely with
standard CSS properties. For a complete summary, refer to the documentation at ht-
tp://docs.oracle.com/javafx/2/css_tutorial/jfxpub-
css_tutorial.htm .
The TextFlow uses the text and font of each node that is embedded within, as
well as its own width and text alignment, to determine the placement of the text. Nodes
other than Text can also be embedded within a TextFlow . When adding Text
nodes to a TextFlow , you can set word wrap by specifying a maximum width of the
TextFlow via the setMaxWidth() method. It is also possible to include a \n at
the end of any strings within a Text node to initiate a line break. The following code
performs the same solution as 1, but uses TextFlow to lay out the Text nodes, rather
than adding each to the scene graph separately.