com.github.mike10004.xvfbmanager.XvfbConfig Maven / Gradle / Ivy

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package com.github.mike10004.xvfbmanager;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Configuration for Xvfb execution.
 */
public class XvfbConfig {

    /**
     * Geometry of the screen. This value is specified in the
     * {@code -screen 0 } option. The syntax is
     * W{@code x}H{@code x}D, where W and H
     * are positive integer width and height values, respectively,
     * and D is a depth value. Supported values for D include
     * "8", "24", and "24+32". A fine choice for this field is
     * {@code 1280x1024x8} or {@code 1280x1024x24+32}.
     */
    public final String geometry;

    public XvfbConfig(String geometry) {
        this.geometry = checkNotNull(geometry);
        checkArgument(geometry.matches("\\d+x\\d+x\\d+(?:\\+32)?"), "argument must have form WxHxD where W=width, H=height, and D=depth; default is 1280x1024x24+32");
    }

    @Override
    public String toString() {
        return "XvfbConfig{" +
                "geometry='" + geometry + '\'' +
                '}';
    }

    private static final XvfbConfig DEFAULT = new XvfbConfig("1280x1024x24+32");

    /**
     * Default configuration instance. This differs from the {@code 1280x1024x8} configuration that {@code Xvfb}
     * uses by default, stated in the manual.
     */
    public static XvfbConfig getDefault() {
        return DEFAULT;
    }
}