Add Vertical Gradient in Java PostScript

Introduction

Welcome to this step-by-step guide on adding a vertical gradient in Java PostScript using Aspose.Page for Java. If you want to enhance your document with eye-catching gradients, this tutorial is for you. Aspose.Page for Java provides powerful tools to manipulate PostScript documents seamlessly.

Prerequisites

Before diving into the tutorial, make sure you have the following prerequisites in place:

• Java Development Kit (JDK) installed on your machine.
• Aspose.Page for Java library. You can download it here.

Import Packages

In your Java project, import the necessary packages to get started:

import java.awt.Color;
import java.awt.LinearGradientPaint;
import java.awt.MultipleGradientPaint;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.FileOutputStream;
import com.aspose.eps.PsDocument;
import com.aspose.eps.device.PsSaveOptions;

Now, let’s break down the process of adding a vertical gradient in Java PostScript into multiple steps.

Step 1: Set up Your Document Directory

// The path to the documents directory.
String dataDir = "Your Document Directory";

Step 2: Create Output Stream for PostScript Document

// Create output stream for PostScript document
FileOutputStream outPsStream = new FileOutputStream(dataDir + "VerticalGradient_outPS.ps");

Step 3: Create Save Options with A4 Size

// Create save options with A4 size
PsSaveOptions options = new PsSaveOptions();

Step 4: Create a New PS Document

// Create new PS Document with the page opened
PsDocument document = new PsDocument(outPsStream, options, false);

Step 5: Create a Rectangle

// Create a rectangle
Rectangle2D.Float rectangle = new Rectangle2D.Float(200, 100, 200, 100);

Step 6: Set Up Colors and Fractions for the Gradient

// Create arrays of colors and fractions for the gradient.
Color[] colors = { Color.RED, Color.GREEN, Color.BLUE, Color.ORANGE, new Color(85, 107, 47) };
float[] fractions = { 0.0f, 0.1873f, 0.492f, 0.734f, 1.0f };

Step 7: Create the Gradient Transform

// Create the gradient transform. Scale components in the transform must be equal to width and height of the rectangle.
// Translation components are offsets of the rectangle.
AffineTransform transform = new AffineTransform(200, 0, 0, 100, 200, 100);
// Rotate the gradient on 90 degrees around an origin
transform.rotate(90 * (Math.PI / 180));

Step 8: Create Vertical Linear Gradient Paint

// Create vertical linear gradient paint.
LinearGradientPaint paint = new LinearGradientPaint(new Point2D.Float(0, 0), new Point2D.Float(200, 100),
        fractions, colors, MultipleGradientPaint.CycleMethod.NO_CYCLE, MultipleGradientPaint.ColorSpaceType.SRGB,
        transform);

Step 9: Set Paint and Fill the Rectangle

// Set paint
document.setPaint(paint);
// Fill the rectangle
document.fill(rectangle);

Step 10: Close Current Page and Save the Document

// Close current page
document.closePage();
// Save the document
document.save();

Congratulations! You’ve successfully added a vertical gradient to your Java PostScript document using Aspose.Page for Java.

Conclusion

In this tutorial, we explored the process of enhancing your documents with vibrant vertical gradients using Aspose.Page for Java. Now, you can take your document manipulations to the next level by incorporating stunning visuals.

Frequently Asked Questions

Can I use Aspose.Page for Java with other Java libraries?

Yes, Aspose.Page for Java is designed to work seamlessly with other Java libraries.

Is there a free trial available for Aspose.Page for Java?

Yes, you can get a free trial here.

Where can I find additional documentation?

Detailed documentation is available here.

How can I purchase Aspose.Page for Java?

You can purchase Aspose.Page for Java here.

Is there a forum for Aspose.Page discussions?

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