I have finished chapter 5 of the greenfoot book. I want to add text to the keys of the piano, that says which note they play. Does anybody know how to do this?
Tim1234 wrote ...
2013/2/26
Greenfoot chapter 5 add text
you can do sth. like:
setColor sets the color of your string with RGB.
setFont lets you set a new Font first font then style and then the size.
And drawString writes your String on the Image key is here your String (the text you want to write) and 23,15 the coordinates in the Picture.
getImage().setColor(new Color(255, 0, 0));
getImage().setFont(new Font("Arial", Font.BOLD, 18));
getImage().drawString(key,23,15);I have added a similar code to my piano, but there doesn't show up any text. This is my (partial) code:
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot)
import java.awt.Color;
/**
* A piano that can be played with the computer keyboard.
*/
public class Piano extends World
{
private String[] whiteKeys =
{ "a", "s", "d", "f", "g", "h", "j", "k", "l", ";", "[", "\\" };
private String[] whiteNotes =
{ "2c", "2d", "2e", "2f", "2g", "2a", "2b", "3c", "3d", "3e", "3f", "3g" };
private String[] blackKeys =
{ "w", "e", "", "t", "y", "u", "", "o", "p", "", "]" };
private String[] blackNotes =
{ "2c#", "2d#", "", "2f#", "2g#", "2a#", "", "3c#", "3d#", "", "3f#" };
private String[] keyNotes =
{ "2c", "2d", "2e", "2f", "2g", "2a", "2b", "3c", "3d", "3e", "3f", "3g" };
/**
* Make the piano. This means mostly, apart from defining the size,
* making the keys and placing them into the world.
*/
public Piano()
{
super(800, 340, 1);
makeKeys();
showMessage();
}
/**
* Create the piano keys and place them in the world.
*/
public void makeKeys()
{
for (int i = 0; i < whiteKeys.length; i++)
{
Key key = new Key(whiteKeys[i], whiteNotes[i] + ".wav", "white-key.png" , "white-key-down.png");
addObject(key, 54 + (i*63), 140);
GreenfootImage bg = getBackground();
bg.setColor(Color.BLACK);
bg.drawString(keyNotes[i], 23, 15);
}i am not sure but it could be that the actors are abvoe your strings. You could try:
key.drawString(keyNotes, 23, 15);
this instead.
private void makeKeys()
{
for(int i = 0; i < whiteKeys.length; i++) {
Key key = new Key(whiteKeys[i], whiteNotes[i]+".wav", "white-key.png", "white-key-down.png");
addObject(key, 54 + (i*63), 140);
key.getImage().setColor(new Color(255, 0, 0));
key.getImage().setFont(new Font("Arial", Font.BOLD, 18));
key.getImage().drawString(whiteNotes[i],15,200);
}
You need to login to post a reply.