/*
* HtmlView.java
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* This was first modified no earlier than May 27, 2008.
*
*/
// Expand to define MIDP define
//#define DMIDP20
// Expand to define test define
//#define DNOTEST
// Expand to define logging define
//#define DNOLOGGING
//#ifdef DMIDP20
package cz.cacek.ebook;
import java.io.EOFException;
import java.util.Vector;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import net.eiroca.j2me.RSSReader.presentation.RenderedWord;
//#ifdef DLOGGING
//@import net.sf.jlogmicro.util.logging.Logger;
//@import net.sf.jlogmicro.util.logging.Level;
//#endif
/**
* Implementation of ebook content screen.
* Some code from RSSReader NewsReader program
* Copyright (C) 2004 G�sta Jonasson <gosta(at)brothas.net>
* Copyright (C) 2006-2008 eIrOcA (eNrIcO Croce & sImOnA Burzio)
* Code from these authors combined with code from above.
* @author Tom� Darmovzal [tomas.darmovzal (at) seznam.cz]
* @author Josef Cacek [josef.cacek (at) atlas.cz]
* @author $Author: ibuntonjr $
* @version $Revision: 1001 $
* @created $Date: 2008-07-16 12:07:24 +0800 (周三, 2008-07-16) $
*/
public class HtmlView extends AbstractView {
protected int position;
protected int pageHeight;
private int corr;
private boolean isBegin;
private boolean isEnd;
private RenderedWord[] renderedWords;
//#ifdef DLOGGING
//@ private Logger logger = Logger.getLogger("HtmlView");
//@ private boolean fineLoggable = logger.isLoggable(Level.FINE);
//@ private boolean finestLoggable = logger.isLoggable(Level.FINEST);
//#endif
/**
* Constructor for doing estimateHeight, and regular constructor
* @throws Exception
*/
private HtmlView() throws Exception {
super.init();
}
/**
* Constructor
* @param aWidth
* @param aHeight
* @throws Exception
*/
public HtmlView(int aWidth, int aHeight, int aFontSize, String txt)
throws Exception {
this();
super.initView(aWidth, aHeight, aFontSize);
RenderedWord.updFontData(aFontSize);
setText(txt);
//#ifdef DLOGGING
//@ if (finestLoggable) {logger.finest("new HtmlView aWidth,aHeight,pageHeight,renderedWords.length=" + aWidth + "," + aHeight + "," + pageHeight + "," + renderedWords.length);}
//#endif
}
/** Set the new text used. */
public void setText(final String txt) {
Vector vect = RenderedWord.createWordList(txt, width -
(2 * borderSpace) - scrollWidth, height - 2 * borderSpace,
foreground, foreground);
renderedWords = new RenderedWord[vect.size()];
vect.copyInto(renderedWords);
vect = null;
pageHeight = renderedWords[renderedWords.length - 1].row +
RenderedWord.heightFont + 2 * borderSpace;
setFirst();
isEnd = true;
}
/**
* Set to be the first of the page
*
* @author Irv Bunton
*/
public void setFirst() {
position = 0;
corr = 0;
isBegin = true;
isEnd = (renderedWords.length > 0);
}
/**
* Sets position in active page in characters
* @param aPos
*/
private void setPosition(int aPos) {
position = aPos;
corr = (position / RenderedWord.heightFont) * RenderedWord.heightFont;
}
/**
* Sets position in active page in percents
* @param aPerc
*/
public void setPercPosition(int aPerc) {
setPosition(pageHeight * aPerc / 100);
}
/**
* Returns current position as a percentige of page.
*
* @return current position as a percentige of page
*/
public int getPercPosition() {
return position * 100 / pageHeight;
}
/**
* Moves view one page ahead
* @throws Exception
*/
public void fwdPage() throws Exception {
corr += height - RenderedWord.heightFont;
if (corr >= pageHeight) {
corr = pageHeight;
}
position = corr;
}
/**
* Moves view one page back
* @throws Exception
*/
public void bckPage() throws Exception {
corr -= height - RenderedWord.heightFont;
if (corr < 0) {
corr = 0;
}
position = corr;
}
/**
* Moves view one line ahead
* @throws Exception
* @return true if scrolling is succesfull
*/
public boolean fwdLine() throws Exception {
synchronized(this) {
//#ifdef DTEST
//@ Common.debug("fwdLine() started");
//#endif
corr += RenderedWord.heightFont;
if (corr > 0) {
isBegin = false;
}
if (corr >= pageHeight) {
corr = pageHeight;
}
position = corr;
final boolean tmpResult = (corr >= pageHeight);
//#ifdef DTEST
//@ Common.debug("fwdLine() finished ("+tmpResult+")");
//#endif
return tmpResult;
}
}
/**
* Moves view one line back
* @throws Exception
*/
public void bckLine() throws Exception {
synchronized(this) {
//#ifdef DTEST
//@ Common.debug("bckLine() started");
//#endif
if (corr > 0) {
corr -= RenderedWord.heightFont;
}
if (corr < 0) {
corr = 0;
}
if (corr == 0) {
isBegin = true;
}
position = corr;
//#ifdef DTEST
//@ Common.debug("bckLine() finished");
//#endif
}
}
/**
* fills page from current position
*/
public void fillPage() {
//#ifdef DTEST
//@ Common.debug("fillPage() started");
//#endif
//#ifdef DTEST
//@ Common.debug("fillPage() finished");
//#endif
}
/**
* check if page empty
*/
public boolean emptyPage() {
//#ifdef DTEST
//@ Common.debug("emptyPage() started");
//#endif
//#ifdef DTEST
//@ Common.debug("emptyPage() finished");
//#endif
return (corr == pageHeight);
}
// Draw text
protected void drawText(Graphics g) {
//#ifdef DLOGGING
//@ if (finestLoggable) {logger.finest("corr,pageHeight=" + corr + "," + pageHeight);}
//#endif
isEnd = true;
int i = 0;
int j = 0;
int last = 0;
for (i = 0; i < renderedWords.length; i++) {
final RenderedWord renderedWord = renderedWords[i];
j = renderedWord.row - corr;
if (j < 0) {
continue;
} else if ((j + RenderedWord.heightFont) < (height - borderSpace)) {
g.setColor(renderedWord.color);
g.setFont(RenderedWord.font[renderedWord.style]);
g.drawString(renderedWord.word, renderedWord.offset +
borderSpace, j + borderSpace,
Graphics.TOP | Graphics.LEFT);
}
else if (pageHeight != 0) {
break;
}
}
if (pageHeight == 0) {
pageHeight = j + RenderedWord.heightFont;
}
if (i >= renderedWords.length) {
isEnd = true;
}
}
/**
* Returns position of first character on screen of current view.
* @return current position of view
*/
public int getPosition() {
return position;
}
/**
* Log the error and throw an exception.
*/
final private static RuntimeException handleError(String method,
Throwable e) {
Common.debugErr(e.getMessage());
//#ifdef DLOGGING
//@ Logger logger = Logger.getLogger("View");
//@ logger.severe(method + " ", e);
//#endif
return new RuntimeException(e.getMessage());
}
protected int getScrollPosition(int height, int scrollHeight) {
if (pageHeight == 0) {
return 0;
} else {
return (height - scrollHeight) * corr / pageHeight;
}
}
public int getPageHeight() {
return (pageHeight);
}
}
//#endif