/**
 *    FrameBitmap.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.expeditee.items;

import java.util.List;

import org.expeditee.core.Colour;
import org.expeditee.core.Image;
import org.expeditee.gui.Frame;
import org.expeditee.gui.FrameIO;

//TODO tidy up the mess I caused with refresh during the period where I was going into XRay mode before saving

public class FrameBitmap extends FramePicture {
	public FrameBitmap(Text source, Image image){
		super(source, image);
	}

	@Override
	public boolean refresh() {
		assert (_source.getLink() != null);
		Frame frame = FrameIO.LoadFrame(_source.getAbsoluteLink());
		// if the frame cant be found just use the current image
		if (frame == null) {
			return false;
		}

		List<Text> textList = frame.getBodyTextItems(false);
		if (textList.size() == 0)
			return false;
		List<String> imageLines = textList.get(0).getTextList();
		int width = 0;
		int height = imageLines.size();
		// Determine the image width by finding the widest line of text
		for (String s : imageLines) {
			if (s.length() > width)
				width = s.length();
		}
		
		if(width == 0)
			return false;
		
		Image bi = Image.createImage(width, height);
		// now set the bits on the image
		final int transparent = (new Colour(0F, 0F, 0F, 0F)).getARGB32BitPacked();
		final int main = _source.getPaintColor().getARGB32BitPacked();
		final Colour c = _source.getPaintColor();
		int currentColor = main;
		int row = 0;
		for (String s : imageLines) {
			for (int i = 0; i < width; i++) {
				currentColor = transparent;
				if (i < s.length()) {
					char currentPixel = s.charAt(i);
					// Space is transparent as is 0
					if (Character.isDigit(currentPixel)) {
						int alpha = Math.round((currentPixel - '0') * (Colour.COMPONENT_MAX_VALUE / 10.0f));
						currentColor = new Colour(c.getRed(), c.getGreen(), c
								.getBlue(), alpha).getARGB32BitPacked();
					}else if (currentPixel != ' ') {
						currentColor = main;
					}
				}
				bi.setPixel(i, row, Colour.fromARGB32BitPacked(currentColor));
			}
			row++;
		}
		_image = bi;

		return true;
	}

	@Override
	protected Picture createPicture() {
		return new FrameBitmap((Text) _source.copy(), _image);
	}

	@Override
	protected String getTagText() {
		return "@b: ";
	}
}