added sources for Slick

Former-commit-id: 1647fa32ef6894bd7db44f741f07c2f4dcdf9054
Former-commit-id: 0e5810dcfbe1fd59b13e7cabe9f1e93c5542da2d

lib/slick-source/org/newdawn/slick/SpriteSheetFont.java

@@ -0,0 +1,111 @@
+package org.newdawn.slick;
+
+import java.io.UnsupportedEncodingException;
+
+import org.newdawn.slick.util.Log;
+
+/**
+ * A font implementation that will use the graphics inside a SpriteSheet for its data.
+ * This is useful when your font has a fixed width and height for each character as
+ * opposed to the more complex AngelCodeFont that allows different sizes and kerning
+ * for each character.
+ *
+ * @author Onno Scheffers
+ */
+public class SpriteSheetFont implements Font {
+	/** The SpriteSheet containing the bitmap font */
+	private SpriteSheet font;
+	/** First character in the SpriteSheet */
+	private char startingCharacter;
+	/** Width of each character in pixels */
+	private int charWidth;
+	/** Height of each character in pixels */
+	private int charHeight;
+	/** Number of characters in SpriteSheet horizontally */
+	private int horizontalCount;
+	/** Total number of characters in SpriteSheet */
+	private int numChars;
+
+	/**
+	 * Create a new font based on a SpriteSheet. The SpriteSheet should hold your
+	 * fixed-width character set in ASCII order. To only get upper-case characters
+	 * working you would usually set up a SpriteSheet with characters for these values:
+	 * <pre>
+	 *   !"#$%&'()*+,-./
+	 *  0123456789:;<=>?
+	 *  &#0064;ABCDEFGHIJKLMNO
+	 *  PQRSTUVWXYZ[\]^_<pre>
+	 * In this set, ' ' (SPACE) would be the startingCharacter of your characterSet.
+	 *
+	 * @param font              The SpriteSheet holding the font data.
+	 * @param startingCharacter The first character that is defined in the SpriteSheet.
+	 */
+	public SpriteSheetFont(SpriteSheet font, char startingCharacter) {
+		this.font = font;
+		this.startingCharacter = startingCharacter;
+		horizontalCount = font.getHorizontalCount();
+		int verticalCount = font.getVerticalCount();
+		charWidth = font.getWidth() / horizontalCount;
+		charHeight = font.getHeight() / verticalCount;
+		numChars = horizontalCount * verticalCount;
+	}
+
+	/**
+	 * @see org.newdawn.slick.Font#drawString(float, float, java.lang.String)
+	 */
+	public void drawString(float x, float y, String text) {
+		drawString(x, y, text, Color.white);
+	}
+
+	/**
+	 * @see org.newdawn.slick.Font#drawString(float, float, java.lang.String, org.newdawn.slick.Color)
+	 */
+	public void drawString(float x, float y, String text, Color col) {
+		drawString(x,y,text,col,0,text.length()-1);
+	}
+	
+	/**
+	 * @see Font#drawString(float, float, String, Color, int, int)
+	 */
+	public void drawString(float x, float y, String text, Color col, int startIndex, int endIndex) {
+		try {
+			byte[] data = text.getBytes("US-ASCII");
+			for (int i = 0; i < data.length; i++) {
+				int index = data[i] - startingCharacter;
+				if (index < numChars) {
+					int xPos = (index % horizontalCount);
+					int yPos = (index / horizontalCount);
+					
+					if ((i >= startIndex) || (i <= endIndex)) {
+						font.getSprite(xPos, yPos)
+								.draw(x + (i * charWidth), y, col);
+					}
+				}
+			}
+		} catch (UnsupportedEncodingException e) {
+			// Should never happen, ASCII is supported pretty much anywhere
+			Log.error(e);
+		}
+	}
+
+	/**
+	 * @see org.newdawn.slick.Font#getHeight(java.lang.String)
+	 */
+	public int getHeight(String text) {
+		return charHeight;
+	}
+
+	/**
+	 * @see org.newdawn.slick.Font#getWidth(java.lang.String)
+	 */
+	public int getWidth(String text) {
+		return charWidth * text.length();
+	}
+
+	/**
+	 * @see org.newdawn.slick.Font#getLineHeight()
+	 */
+	public int getLineHeight() {
+		return charHeight;
+	}
+}