CSE_205_GUI_part3_Color_Font.ppt.pdf

CSE205

Object-Oriented Programming and

Data Structures

GUI

(Graphical User Interface)

Introduction

The Color Class

•You need to import the following class in order to use Color:

import javafx.scene.paint.Color;

•A color instance can be constructed using the following constructor.

r, g, b represents red, green and blue color which value is between 0.0 to

1.0.

public Color(double r, double g, double b, double opacity);

For example:

Color color = new Color(0.25, 0.14, 0.333, 0.51);

The Color class is immutable.

Once a Color object is created, its properties cannot be changed.

You can use one of the many standard colors such as

RED, BLUE, BLACK, BROWN, BEIGE,CYAN, DARKGRAY,

GOLD, GRAY, GREEN, LIGHTGRAY, MAGENTA, NAVY,

ORANGE, PINK, RED, SILVER, WHITE, and YELLOW

defined as constants in the Color class.

•Example #1: the following code, for instance, sets the text color to

red:

Label label1 = new Label(“CSE205 GUI”);

label1.setTextFill(Color.RED);

•Example #2: the following code fill color of a circle to blue:

circle.setFill(Color.BLUE);

•You need to import the following class in order to use

Font

import javafx.scene.text.Font;

•You can set fonts for rendering the text. A Font instance

can be constructed using its constructors or using its static

methods. for example:

See Example : FontDemo.java

The Font Class