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path: root/resources/icons/GoogleLoginIcons.java
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/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package icons;

import com.intellij.openapi.util.IconLoader;

import javax.swing.*;

/**
 * A utility class that loads the icons that are used by the Google Login plugin.
 *
 * Using this class to load icons is preferred over creating scaled image icons manually in code,
 * as this utility class will automatically select the appropriate icons based on the current
 * theme (IntelliJ classic vs. Darcula) and will automatically select high resolution icons
 * for retina displays.
 *
 * To ensure the appropriate icons are selected, they should be named according to the following rules:
 *
 * <ul>
 *   <li>icon_name.png - The IntelliJ classic image icon to use.</li>
 *   <li>icon_name@2x.png - The IntelliJ classic image icon to use for retina displays.</li>
 *   <li>icon_name_dark.png - The Darcula image icon to use.</li>
 *   <li>icon_name@2x_dark.png - The Darcula image icon to use for retina displays.</li>
 * </ul>
 *
 * Note that if no alternative image icons are specified, the single provided image icon
 * will be used in all themes and resolutions.
 */
public final class GoogleLoginIcons {

  public static final Icon GOOGLE_LOGO = load("/icons/google_logo.png");

  private static Icon load(String path) {
    return IconLoader.getIcon(path, GoogleLoginIcons.class);
  }

  private GoogleLoginIcons() {
    // This utility class should not be instantiated.
  }
}