/*
* 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.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.*;
/**
* The Polygon function draws a polygon consisting of two or more vertices connected by straight lines. The polygon is
* outlined by using the current pen and filled by using the current brush and polygon fill mode.
*/
public class MfCmdPolygon extends MfCmd {
private int[] points_x;
private int[] points_y;
private int[] scaled_points_x;
private int[] scaled_points_y;
private int count;
public MfCmdPolygon() {
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay( final WmfFile file ) {
final Graphics2D graph = file.getGraphics2D();
final Polygon polygon = new Polygon( getScaledPointsX(), getScaledPointsY(), getPointCount() );
final MfDcState state = file.getCurrentState();
if ( state.getLogBrush().isVisible() ) {
state.preparePaint();
graph.fill( polygon );
state.postPaint();
}
if ( state.getLogPen().isVisible() ) {
state.prepareDraw();
graph.draw( polygon );
state.postDraw();
}
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance() {
return new MfCmdPolygon();
}
/**
* 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.POLYGON;
}
public String toString() {
final StringBuffer b = new StringBuffer();
b.append( "[POLYGON] count=" );
b.append( getPointCount() );
final int l = getPointCount();
final int[] points_x = getPointsX();
final int[] points_y = getPointsY();
for ( int i = 0; i < l; i++ ) {
if ( i != 0 ) {
b.append( ',' );
}
b.append( " (" );
b.append( points_x[ i ] );
b.append( ',' );
b.append( points_y[ i ] );
b.append( ") " );
}
return b.toString();
}
/**
* 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 int[] points_x = new int[ count ];
final int[] points_y = new int[ count ];
for ( int i = 0; i < count; i++ ) {
points_x[ i ] = record.getParam( 1 + 2 * i );
points_y[ i ] = record.getParam( 2 + 2 * i );
}
setPointCount( count );
setPoints( points_x, points_y );
}
/**
* 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( getPointCount() * 2 + 1 );
final int count = getPointCount();
final int[] points_x = getPointsX();
final int[] points_y = getPointsY();
record.setParam( 0, count );
for ( int i = 0; i < count; i++ ) {
record.setParam( 1 + 2 * i, points_x[ i ] );
record.setParam( 2 + 2 * i, points_y[ i ] );
}
return record;
}
public void setPointCount( final int count ) {
this.count = count;
}
public void setPoints( final int[] points_x, final int[] points_y ) {
this.points_x = points_x;
this.points_y = points_y;
scaleXChanged();
scaleYChanged();
}
public int[] getPointsX() {
return points_x;
}
public int[] getPointsY() {
return points_y;
}
public int[] getScaledPointsX() {
return scaled_points_x;
}
public int[] getScaledPointsY() {
return scaled_points_y;
}
public int getPointCount() {
return count;
}
/**
* 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_points_x = applyScaleX( points_x, scaled_points_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_points_y = applyScaleY( points_y, scaled_points_y );
}
}