preview.java

的说法科斯洛伐路上看到伐楼上的开发1科林麦克；

package org.loon.framework.ide.test.dialog;
/**
 * <p>Title: LoonFramework</p>
 * <p>Description:</p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: LoonFramework</p>
 * @author chenpeng  
 * @email：[e-mail] 
 * @version 0.1
 */
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.print.PageFormat;

import org.loon.framework.ide.test.data.PreviewData;

class Preview extends Canvas {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	static final int NEXT = 1;

	static final int BEFORE = 2;

	PreviewData previewData;

	int currentPage;

	int maxPage;

	int maxLine;

	int left;

	int top;

	int lineSpace;

	int size;

	Font font;

	Image image;

	public Preview(String s, Font font1, PageFormat pageformat) {
		font = font1;
		previewData = new PreviewData(s, font1, pageformat);
		maxPage = previewData.getMaxPage();
		maxLine = previewData.getMaxLine();
		left = previewData.getSpaceLeft();
		top = previewData.getSpaceTop();
		lineSpace = previewData.getLineSpace();
		size = font1.getSize();
		if (previewData.getMaxWidth() < previewData.getMaxHeight())
			setSize(354, 500);
		else
			setSize(500, 354);
	}

	public int paging(int i) {
		if (i == 1) {
			if (currentPage < maxPage - 1) {
				currentPage++;
				printImage();
			}
		} else if (currentPage > 0) {
			currentPage--;
			printImage();
		}
		int j = 0;
		if (currentPage >= maxPage - 1)
			j |= 1;
		if (currentPage <= 0)
			j |= 2;
		return j;
	}

	public String getPageInfo() {
		return (currentPage + 1) + " / " + maxPage;
	}

	public int getMaxPage() {
		return maxPage;
	}

	public String getSheetFormat() {
		String as[] = { "A4", "B5", "A6",
				"None" };
		byte result = 0;
		int j = previewData.getMaxWidth();
		int k = previewData.getMaxHeight();
		int l = 0;
		int i1 = 0;
		if (j >= k) {
			l = j;
			i1 = k;
		} else {
			l = k;
			i1 = j;
		}
		if (l >= 820 && l <= 860 && i1 >= 570 && i1 <= 620)
			result = 0;
		else if (l >= 700 && l <= 750 && i1 >= 490 && i1 <= 540)
			result = 1;
		else if (l >= 390 && l <= 450 && i1 >= 270 && i1 <= 320)
			result = 2;
		else
			result = 3;
		return as[result];
	}

	public void printImage() {
		int i = previewData.getMaxWidth();
		int j = previewData.getMaxHeight();
		image = createImage(i, j);
		Graphics g = image.getGraphics();
		g.setFont(font);
		g.setColor(Color.white);
		g.fillRect(0, 0, i - 1, j - 1);
		g.setColor(Color.black);
		g.drawRect(0, 0, i - 1, j - 1);
		String as[] = previewData.getPage(currentPage);
		for (int k = 0; k < maxLine; k++)
			if (as[k] != null)
				g.drawString(as[k], left, top + k * (size + lineSpace));

		repaint();
	}

	public void paint(Graphics g) {
		if (image != null)
			if (previewData.getMaxWidth() < previewData.getMaxHeight())
				g.drawImage(image, 0, 0, 354, 500, this);
			else
				g.drawImage(image, 0, 0, 500, 354, this);
	}

}