LinearGradient class is a part of JavaFX. LinearGradient class fills a shape with a linear color gradient pattern. A user may specify more than one LinearGradient pattern and the system will provide interpolation between the colors.
Constructors of the class:
- LinearGradient(double sX, double sY, double eX, double eY, boolean prop, CycleMethod c, List s): Creates a new Lineargradient object.
- LinearGradient(double sX, double sY, double eX, double eY, boolean prop, CycleMethod c, Stop… s): Creates a new LinearGradient object.
Commonly Used Methods:
Method | Explanation |
---|---|
equals(Object o) | Returns whether the LinearGradient objects are equal or not. |
getCycleMethod() | Returns the cycle method of the linear gradient object. |
getEndX() | Returns the x coordinate of end point of the linear gradient. |
getEndY() | Returns the y coordinate of end point of the linear gradient. |
getStartX() | Returns the x coordinate of start point of the linear gradient. |
getStartY() | Returns the y coordinate of start point of the linear gradient. |
getStops() | Returns the stops of linear gradient. |
isOpaque() | Returns whether the linear Gradient is opaque or not. |
isProportional() | Returns whether the linear Gradient is proportional or not. |
valueOf(String v) | Creates a linear gradient value from a string representation. |
Below programs illustrate the use of LinearGradient Class:
- Java program to create a LinearGradient object and add stops to it and apply it to the circle: In this program we will create an array of Stop objects with their offset values ranging from 0 to 1. Create a LinearGradient object with specified stops. Now create a circle with specified x, y positions, and radius and add the linear gradient to it. Then create a VBox and set the alignment of it. Add the circle to the vbox and add the vbox to the scene and add the scene to the stage and call the show() function to display the results.
// Java program to create a LinearGradient
// object and add stops to it and apply it
// to the circle
import
javafx.application.Application;
import
javafx.scene.Scene;
import
javafx.scene.control.*;
import
javafx.scene.layout.*;
import
javafx.stage.Stage;
import
javafx.scene.layout.*;
import
javafx.scene.paint.*;
import
javafx.scene.text.*;
import
javafx.geometry.*;
import
javafx.scene.layout.*;
import
javafx.scene.shape.*;
import
javafx.scene.paint.*;
public
class
Linear_Gradient_1
extends
Application {
// launch the application
public
void
start(Stage stage)
{
try
{
// set title for the stage
stage.setTitle(
"Linear Gradient"
);
// create stops
Stop[] stop = {
new
Stop(
0
, Color.RED),
new
Stop(
0.5
, Color.GREEN),
new
Stop(
1
, Color.BLUE)};
// create a Linear gradient object
LinearGradient linear_gradient =
new
LinearGradient(
0
,
0
,
1
,
0
,
true
, CycleMethod.NO_CYCLE, stop);
// create a circle
Circle circle =
new
Circle(
100
,
100
,
70
);
// set fill
circle.setFill(linear_gradient);
// create VBox
VBox vbox =
new
VBox(circle);
// ste Alignment
vbox.setAlignment(Pos.CENTER);
// create a scene
Scene scene =
new
Scene(vbox,
400
,
300
);
// set the scene
stage.setScene(scene);
stage.show();
}
catch
(Exception e) {
System.out.println(e.getMessage());
}
}
// Main Method
public
static
void
main(String args[])
{
// launch the application
launch(args);
}
}
Output:
-
Java program to create a LinearGradient object and add stops to it and set the CycleMethod to reflect and set proportional to false and apply it to the circle: In this program we will create an array of Stop objects with their offset values ranging from 0 to 1. Then create a LinearGradient object with specified stops. Set the CycleMethod to reflect and set proportional to false. Create a circle with specified x, y positions, and radius and add the linear gradient to it. Then create a VBox and set the alignment of it. Add the circle to the vbox and add the vbox to the scene and add the scene to the stage and call the show() function to display the results.
// Java program to create a LinearGradient object
// and add stops to it and set the CycleMethod to
// reflect and set proportional to false and
// apply it to the circle
import
javafx.application.Application;
import
javafx.scene.Scene;
import
javafx.scene.control.*;
import
javafx.scene.layout.*;
import
javafx.stage.Stage;
import
javafx.scene.layout.*;
import
javafx.scene.paint.*;
import
javafx.scene.text.*;
import
javafx.geometry.*;
import
javafx.scene.layout.*;
import
javafx.scene.shape.*;
import
javafx.scene.paint.*;
public
class
Linear_Gradient_2
extends
Application {
// launch the application
public
void
start(Stage stage)
{
try
{
// set title for the stage
stage.setTitle(
"Linear Gradient"
);
// create stops
Stop[] stop = {
new
Stop(
0
, Color.RED),
new
Stop(
0.5
,
Color.GREEN),
new
Stop(
1
, Color.BLUE)};
// create a Linear gradient object
LinearGradient linear_gradient =
new
LinearGradient(
0
,
0
,
35
,
0
,
false
, CycleMethod.REFLECT, stop);
// create a circle
Circle circle =
new
Circle(
100
,
100
,
70
);
// set fill
circle.setFill(linear_gradient);
// create VBox
VBox vbox =
new
VBox(circle);
// ste Alignment
vbox.setAlignment(Pos.CENTER);
// create a scene
Scene scene =
new
Scene(vbox,
400
,
300
);
// set the scene
stage.setScene(scene);
stage.show();
}
catch
(Exception e) {
System.out.println(e.getMessage());
}
}
// Main Method
public
static
void
main(String args[])
{
// launch the application
launch(args);
}
}
Output:
Note: The above programs might not run in an online IDE please use an offline compiler.
Reference: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/paint/LinearGradient.html