+ /**
+ * Get the number of colors in the sixel palette.
+ *
+ * @return the palette size
+ */
+ public int getSixelPaletteSize() {
+ return sixelPaletteSize;
+ }
+
+ /**
+ * Set the number of colors in the sixel palette.
+ *
+ * @param paletteSize the new palette size
+ */
+ public void setSixelPaletteSize(final int paletteSize) {
+ if (paletteSize == sixelPaletteSize) {
+ return;
+ }
+
+ switch (paletteSize) {
+ case 2:
+ case 256:
+ case 512:
+ case 1024:
+ case 2048:
+ break;
+ default:
+ throw new IllegalArgumentException("Unsupported sixel palette " +
+ " size: " + paletteSize);
+ }
+
+ // Don't step on the screen refresh thread.
+ synchronized (this) {
+ sixelPaletteSize = paletteSize;
+ palette = null;
+ sixelCache = null;
+ clearPhysical();
+ }
+ }
+