import com.googlecode.lanterna.terminal.TerminalPosition; //导入依赖的package包/类
public TranslationTextGraphics(TextGraphics originalGraphics, TerminalPosition translation, TerminalSize size) {
	this.originalGraphics = originalGraphics;
	this.translation = translation;
	this.size = size;
}
 

import com.googlecode.lanterna.terminal.TerminalPosition; //导入依赖的package包/类
@Override
public void fillRectangle(char character, TerminalPosition topLeft, TerminalSize rectangleSize) {
	TerminalPosition newTopLeft = new TerminalPosition(topLeft.getColumn() + translation.getColumn(), topLeft.getRow()
			+ translation.getRow());
	originalGraphics.fillRectangle(character, newTopLeft, rectangleSize);
}
 

import com.googlecode.lanterna.terminal.TerminalPosition; //导入依赖的package包/类
@Override
public TextGraphics subAreaGraphics(TerminalPosition terminalPosition) {
	// TODO Auto-generated method stub
	return null;
}
 

import com.googlecode.lanterna.terminal.TerminalPosition; //导入依赖的package包/类
@Override
public TerminalPosition translateToGlobalCoordinates(TerminalPosition pointInArea) {
	// TODO Auto-generated method stub
	return null;
}
 

import com.googlecode.lanterna.terminal.TerminalPosition; //导入依赖的package包/类
@Override
public TerminalPosition getHotspot()
{
    return null; // No hotspot
}
 

import com.googlecode.lanterna.terminal.TerminalPosition; //导入依赖的package包/类
@Override
public void repaint(TextGraphics graphics) {

	// Clear area
	graphics.setBackgroundColor(Terminal.Color.DEFAULT);
	graphics.setForegroundColor(Terminal.Color.WHITE);
	graphics.fillArea(' ');

	height = graphics.getHeight();

	itemsCount = buildChilds(graphics, 0, root, -1);


	if (itemsCount > 0) {

		// Draw scroll bar

		double proportion = (double) height / itemsCount;

		int startRow = (int) (firstVisibleRow * proportion);
		int fillRows = (int) (height * proportion) + 1;

		graphics.setBackgroundColor(Terminal.Color.DEFAULT);
		graphics.setForegroundColor(Terminal.Color.WHITE);
		graphics.fillRectangle('░', new TerminalPosition(graphics.getWidth() - 1, 0), new TerminalSize(1, height));

		graphics.fillRectangle('█', new TerminalPosition(graphics.getWidth() - 1, startRow), new TerminalSize(1, fillRows));
	}
}