textblock.java

最强手机阅读器Anyview3.0版的界面代码

package com.ismyway.fairyui;

import java.util.Vector;

import javax.microedition.lcdui.Graphics;

import com.ismyway.anyview.others.Settings;
import com.ismyway.util.Theme;

public class TextBlock extends DisplayableBlock {
	protected String text = "";
	protected Vector lines = new Vector();
	protected boolean wrap = false; //是否换行
	private boolean forcewrap = false;

	public TextBlock() {
	}

	public TextBlock(String text) {
		this.text = text;
	}

	public TextBlock(String text, boolean forcewrap) {
		this.text = text;
		this.forcewrap = forcewrap;
	}

	public void paint(Graphics g, int adjustx, int adjusty) {
		//System.out.println(getInnerLeft() + ", " + getInnerTop() + ", " + getLeft() + ", " + getTop());
		int fontHeight = getFont().getHeight();
		g.setFont(getFont());
		int top = getTop() - adjusty;

		int panelHeight = MainCanvas.getInstance().getHeight();
		if (!isSelected()) {
			if (lines.size() > 0) {
				g.setColor(Theme.TextColor);
				g.drawString((String) lines.elementAt(0), getLeft() - adjustx, top, ANCHOR);
				for (int i = 1; i < lines.size(); i++) {
					if (top > panelHeight) {
						return;
					}
					top += getFont().getHeight() + HORPADDING;
					if (top < 0) {
						continue;
					}
					g.drawString((String) lines.elementAt(i), VECPADDING - adjustx, top, ANCHOR);
				}
			}
		} else {
			if (lines.size() > 0) {
				g.setColor(Theme.linkColor);
				g.fillRect(getLeft() - adjustx, top, getFont().stringWidth((String) lines.elementAt(0)), fontHeight);
				g.setColor(Theme.linkBackground);
				g.drawString((String) lines.elementAt(0), getLeft() - adjustx, top, ANCHOR);
				for (int i = 1; i < lines.size(); i++) {
					if (top > panelHeight) {
						//System.out.println("tb返回:" + i);
						return;
					}
					top += getFont().getHeight() + HORPADDING;
					if (top < 0) {
						continue;
					}
					g.setColor(Theme.linkColor);
					g.fillRect(VECPADDING - adjustx, top, getFont().stringWidth((String) lines.elementAt(i)),
							fontHeight);
					g.setColor(Theme.linkBackground);
					g.drawString((String) lines.elementAt(i), VECPADDING - adjustx, top, ANCHOR);
				}
			}
		}
	}

	public boolean isPointerIn(int x, int y) {
		if (!wrap) { //未折行
			if (x > getLeft() && x < getLeft() + getFont().stringWidth(text) && y > getTop()
					&& y < getTop() + getFont().getHeight()) {
				return true;
			}
		} else {
			String str = (String) lines.elementAt(0);
			if (x > getLeft() && x < getLeft() + getFont().stringWidth(str) && y > getTop()
					&& y < getTop() + getFont().getHeight()) {
				return true;
			}
			int top = getTop() + Settings.HORPADDING + getFont().getHeight();
			for (int i = 1; i < lines.size(); i++) {
				str = (String) lines.elementAt(i);
				if (x > Settings.VECPADDING && x < Settings.VECPADDING + getFont().stringWidth(str) && y > top
						&& y < top + getFont().getHeight()) {
					return true;
				}
				top += Settings.HORPADDING + getFont().getHeight();
			}
		}
		return false;
	}

	public String getText() {
		return text;
	}

	public void setText(String text) {
		this.text = text;
		if (!wrap && lines.size() == 1) {
			lines.removeElementAt(0);
			lines.addElement(text);
		}
	}

	public void putInSequence(final int[] rect, int width) {
		lines.removeAllElements();
		wrap = false;

		setInnerLeft(rect[0]);
		if (rect[3] > getFont().getHeight()) {
			setInnerTop(rect[1] + rect[3] - getFont().getHeight() - HORPADDING);
		} else {
			setInnerTop(rect[1]);
		}

		int rest = rect[2];
		int index = 0;
		int top = getInnerTop();
		int chinesewidth = getFont().charWidth('汉');

		StringBuffer sb = new StringBuffer();
		while (true) {
			if (index > text.length() - 1) {
				break;
			}
			char ch = text.charAt(index++);
			int charwidth = chinesewidth;
			if (ch < 127) { //英文
				charwidth = getFont().charWidth(ch);
				if (ch == '') {
					lines.addElement(sb.toString());
					sb = new StringBuffer();
					rest = width;
					top += getFont().getHeight() + HORPADDING;
					wrap = true;
					continue;
				}
			}
			if (rest > charwidth) {
				sb.append(ch);
				rest -= charwidth;
			} else {
				lines.addElement(sb.toString());
				sb = new StringBuffer();
				sb.append(ch);
				rest = width - charwidth;
				top += getFont().getHeight() + HORPADDING;
				wrap = true;
			}
		}

		int r0 = rect[0];
		int r1 = rect[1];
		int r2 = rect[2];

		//缓冲区中仍然有字符
		lines.addElement(sb.toString());

		if (forcewrap) {
			rect[0] = 0;
			rect[1] = top + getFont().getHeight() + HORPADDING;
			rect[2] = width + VECPADDING;
			rect[3] = 1;
		} else {
			if (wrap) {
				setWidth(width - rest);
				rect[0] = width - rest + VECPADDING;
				rect[1] = top;
				rect[2] = rest;
				rect[3] = getFont().getHeight() + HORPADDING;
			} else {
				setWidth(r2 - rest);
				rect[0] = r0 + r2 - rest;
				rect[1] = top;
				rect[2] = rest;
				rect[3] = getFont().getHeight() + HORPADDING;
			}
		}

		if (!wrap) {
			setHeight(getFont().getHeight());
		} else {
			setHeight(top - r1 + getFont().getHeight());
		}
		return;
	}
}