JavaFX Cookbook

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Object Colors


All JavaFX shapes (Text included, yes letters drawn on screen are considered shapes) can be colored using any one of the millions of colors supported by your device.  Color is provided by class javafx.scene.paint.Color which supports several ways to declare an instance of Color.  The followings show the different ways the Color class can be created to paint a red circle on the screen:

With Color Constants

The Color class exposes each color
def w = 400;
def h = 200;

def circ0 = Circle {
    centerX: w/2 centerY:h/2 radius: 90 fill:Color.RED
}

With Color Name

def w = 400;
def h = 200;

def circ0 = Circle {
    centerX: w/2 centerY:h/2 radius: 90 fill:Color.web("red")
}

With RGB Values

def w = 400;
def h = 200;

def circ0 = Circle {
    centerX: w/2 centerY:h/2 radius: 90 fill:Color.rgb(255,0,0)
}

With sRGB Values

def w = 400;
def h = 200;

def circ0 = Circle {
    centerX: w/2 centerY:h/2 radius: 90 fill:Color.color(1.0,0.0,0.0)
}

With Web Hex Values

def w = 400;
def h = 200;

def circ0 = Circle {
    centerX: w/2 centerY:h/2 radius: 90 fill:Color.web("#FF0000")
}

All of previous code snippets will create red circle as shown below:




The materials on this website represent a small sample of content loosely based on the book JavaFX Application Development Cookbook.  The book offers far more content with over 80 recipes covering a range of topics from basics to advanced concepts.  

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