The way of displaying image in ImageCellRenderer, etc.
| DEFAULT | "default" | Do not change the size, and display from the top left of cell. |
| CENTER | "center" | Do not change the size, and display to the center of cell. |
| BOTH | "both" | Adjust the size of image to the size of cell. |
| WIDTH | "width" | Adjust the width of image to the width of cell. Do not change the height of image. |
| HEIGHT | "height" | Adjust the height of image to the height of cell. Do not change the width of image. |
| AUTO | "auto" | Adjust the size of image to fit both the width and height of cell, and display to the center of cell. |