/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.libraries.pixie.wmf.records;
import java.awt.Graphics2D;
import java.awt.Point;
import org.pentaho.reporting.libraries.pixie.wmf.MfDcState;
import org.pentaho.reporting.libraries.pixie.wmf.MfRecord;
import org.pentaho.reporting.libraries.pixie.wmf.MfType;
import org.pentaho.reporting.libraries.pixie.wmf.WmfFile;
/**
* Prints the given string. That record is as weird as everything in windows. First
* parameter is the string length, then follows the string and finally the x and y
* coordinates (in that order) where to print the string.
*/
public class MfCmdTextOut extends MfCmd
{
private int x;
private int y;
private String text;
private int count;
private int scaled_x;
private int scaled_y;
public MfCmdTextOut()
{
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay(final WmfFile file)
{
final Point p = getScaledDestination();
final int x = p.x;
final int y = p.y;
final Graphics2D graphics = file.getGraphics2D();
final MfDcState state = file.getCurrentState();
state.prepareDrawText();
graphics.drawString(text, x, y);
state.postDrawText();
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance()
{
return new MfCmdTextOut();
}
/**
* Reads the function identifier. Every record type is identified by a function number
* corresponding to one of the Windows GDI functions used.
*
* @return the function identifier.
*/
public int getFunction()
{
return MfType.TEXT_OUT;
}
/**
* Reads the command data from the given record and adjusts the internal parameters
* according to the data parsed.
* <p/>
* After the raw record was read from the datasource, the record is parsed by the
* concrete implementation.
*
* @param record the raw data that makes up the record.
*/
public void setRecord(final MfRecord record)
{
final int count = record.getParam(0);
final byte[] text = new byte[count];
for (int i = 0; i < count; i++)
{
text[i] = (byte) record.getByte(MfRecord.RECORD_HEADER_SIZE + 2 + i);
}
final String sText = new String(text);
final int y = record.getParam((int) (Math.ceil(count / 2) + 1));
final int x = record.getParam((int) (Math.ceil(count / 2) + 2));
setCount(count);
setDestination(x, y);
setText(sText);
}
/**
* Creates a new record based on the data stored in the MfCommand.
*
* @return the created record.
*/
public MfRecord getRecord()
throws RecordCreationException
{
final String text = getText();
final int parCntText = (int) Math.ceil(text.length() / 2);
final MfRecord record = new MfRecord(parCntText + 3);
record.setParam(0, text.length());
final byte[] textRaw = text.getBytes();
for (int i = 0; i < count; i++)
{
record.setByte(MfRecord.RECORD_HEADER_SIZE + 2 + i, textRaw[i]);
}
final Point dest = getDestination();
record.setParam((int) (Math.ceil(count / 2) + 1), dest.y);
record.setParam((int) (Math.ceil(count / 2) + 2), dest.x);
return record;
}
public String toString()
{
final StringBuffer b = new StringBuffer();
b.append("[TEXT_OUT] text=");
b.append(getText());
b.append(" destination=");
b.append(getDestination());
b.append(" count=");
b.append(getCount());
return b.toString();
}
public void setDestination(final int x, final int y)
{
this.x = x;
this.y = y;
scaleXChanged();
scaleYChanged();
}
public Point getDestination()
{
return new Point(x, y);
}
public void setText(final String text)
{
this.text = text;
}
public String getText()
{
return text;
}
public int getCount()
{
return count;
}
public void setCount(final int count)
{
this.count = count;
}
public Point getScaledDestination()
{
return new Point(scaled_x, scaled_y);
}
/**
* A callback function to inform the object, that the x scale has changed and the
* internal coordinate values have to be adjusted.
*/
protected void scaleXChanged()
{
scaled_x = getScaledX(x);
}
/**
* A callback function to inform the object, that the y scale has changed and the
* internal coordinate values have to be adjusted.
*/
protected void scaleYChanged()
{
scaled_y = getScaledY(y);
}
}