package javacodes.lightdraw;

import java.util.Map;

import java.util.TreeMap;

public class Window {

/**

* Key is row number Value is another map, whose key is column number, and

* value is the character

*/

private Map<Integer, Map<Integer, String>> screen = new TreeMap<Integer, Map<Integer, String>>();

private static final int WINDOW_SIZE = 20;

/**

* Draw an empty screen, with pounds as chars

*/

public void init() {

for (int i = 0; i < WINDOW_SIZE; i++) {

Map<Integer, String> row = new TreeMap<Integer, String>();

for (int j = 0; j < WINDOW_SIZE; j++) {

row.put(j, " ");

}

screen.put(i, row);

}

}

public void render() {

System.out.println("[Screen");

System.out.println(" ------------------------------------------");

for (int rowNumber : screen.keySet()) {

Map<Integer, String> row = screen.get(rowNumber);

System.out.print(" | ");

for (int columnNumber : row.keySet()) {

String pixel = row.get(columnNumber);

System.out.print(pixel + " ");

}

System.out.print(" | ");

System.out.println("");

}

System.out.println(" ------------------------------------------");

}

public void draw(int row, int col, String character) {

if (row < 0 || row > WINDOW_SIZE - 1 || col < 0 || col > WINDOW_SIZE - 1) {

throw new IllegalArgumentException("OUT OF BOUNDS KA BOY!");

}

this.screen.get(row).put(col, character);

}

public String getPixel(int row, int col) {

if (row < 0 || row > WINDOW_SIZE - 1 || col < 0 || col > WINDOW_SIZE - 1) {

throw new IllegalArgumentException("OUT OF BOUNDS KA BOY!");

}

return this.screen.get(row).get(col);

}

}