/*
* 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 org.pentaho.reporting.libraries.pixie.wmf.GDIColor;
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;
import java.awt.*;
/**
* Draws a single pixel with the given color on the specified position.
*/
public class MfCmdSetPixel extends MfCmd {
private static final int RECORD_SIZE = 4;
private static final int POS_COLOR = 0;
private static final int POS_X = 3;
private static final int POS_Y = 2;
private int x;
private int y;
private int scaled_x;
private int scaled_y;
private Color color;
public MfCmdSetPixel() {
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay( final WmfFile file ) {
final Point p = getScaledTarget();
final Graphics2D g = file.getGraphics2D();
final MfDcState state = file.getCurrentState();
state.prepareDraw();
g.drawLine( p.x, p.y, p.x, p.y );
state.postDraw();
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance() {
return new MfCmdSetPixel();
}
/**
* Creates a new record based on the data stored in the MfCommand.
*
* @return the created record.
*/
public MfRecord getRecord()
throws RecordCreationException {
final MfRecord record = new MfRecord( RECORD_SIZE );
record.setLongParam( POS_COLOR, GDIColor.translateColor( getColor() ) );
final Point p = getTarget();
record.setParam( POS_X, p.x );
record.setParam( POS_Y, p.y );
return record;
}
/**
* 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 c = record.getLongParam( POS_COLOR );
final Color color = new GDIColor( c );
final int y = record.getParam( POS_Y );
final int x = record.getParam( POS_X );
setTarget( x, y );
setColor( color );
}
public Point getTarget() {
return new Point( x, y );
}
public Point getScaledTarget() {
return new Point( scaled_x, scaled_y );
}
public void setTarget( final int x, final int y ) {
this.x = x;
this.y = y;
scaleXChanged();
scaleYChanged();
}
public void setTarget( final Point point ) {
this.x = point.x;
this.y = point.y;
}
public void setColor( final Color c ) {
this.color = c;
}
public Color getColor() {
return color;
}
/**
* 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.SET_PIXEL;
}
public String toString() {
final StringBuffer b = new StringBuffer();
b.append( "[SET_PIXEL] target=" );
b.append( getTarget() );
b.append( " color=" );
b.append( getColor() );
return b.toString();
}
/**
* 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 );
}
}