content: /*
   * Copyright 2002-2019 Drew Noakes and contributors
   *
   *    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
   *
   *        https://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.
   *
   * More information about this project is available at:
   *
   *    https://drewnoakes.com/code/exif/
   *    https://github.com/drewnoakes/metadata-extractor
   */
  
  package com.drew.metadata.pcx;
  
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.TagDescriptor;
  
  import static com.drew.metadata.pcx.PcxDirectory.*;
  
  /**
   * @author Drew Noakes https://drewnoakes.com
   */
  @SuppressWarnings("WeakerAccess")
  public class PcxDescriptor extends TagDescriptor<PcxDirectory>
  {
      public PcxDescriptor(@NotNull PcxDirectory directory)
      {
          super(directory);
      }
  
      @Override
      public String getDescription(int tagType)
      {
          switch (tagType) {
              case TAG_VERSION:
                  return getVersionDescription();
              case TAG_COLOR_PLANES:
                  return getColorPlanesDescription();
              case TAG_PALETTE_TYPE:
                  return getPaletteTypeDescription();
              default:
                  return super.getDescription(tagType);
          }
      }
  
      @Nullable
      public String getVersionDescription()
      {
          // Prior to v2.5 of PC Paintbrush, the PCX image file format was considered proprietary information
          // by ZSoft Corporation
  
          return getIndexedDescription(TAG_VERSION,
              "2.5 with fixed EGA palette information",
              null,
              "2.8 with modifiable EGA palette information",
              "2.8 without palette information (default palette)",
              "PC Paintbrush for Windows",
              "3.0 or better");
      }
  
      @Nullable
      public String getColorPlanesDescription()
      {
          return getIndexedDescription(TAG_COLOR_PLANES, 3,
              "24-bit color",
              "16 colors");
      }
  
      @Nullable
      public String getPaletteTypeDescription()
      {
          return getIndexedDescription(TAG_PALETTE_TYPE, 1,
              "Color or B&W",
              "Grayscale");
      }
  }
  