/*
* 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.Polygon;
import java.awt.geom.GeneralPath;
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;
/**
* PolyPolygon, is a list of polygons, for filled polygons SetPolyFillMode affects how the
* polygon is filled. the number of polygons is recorded, followed by the number of points
* in each polygon, and then a long sequence of all the points of all the polygons.
*/
public class MfCmdPolyPolygon extends MfCmd
{
private Object[] points_x; // contains int[]
private Object[] points_y; // contains int[]
private Object[] scaled_points_x; // contains int[]
private Object[] scaled_points_y; // contains int[]
private int polycount;
public MfCmdPolyPolygon()
{
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay(final WmfFile file)
{
final Graphics2D graph = file.getGraphics2D();
final MfDcState state = file.getCurrentState();
final GeneralPath genPath = new GeneralPath();
for (int i = 0; i < polycount; i++)
{
final int[] pointsX = getScaledPointsX(i);
final int[] pointsY = getScaledPointsY(i);
final Polygon polygon = new Polygon(pointsX, pointsY, pointsX.length);
genPath.append(polygon, false);
}
if (state.getLogBrush().isVisible())
{
state.preparePaint();
graph.fill(genPath);
state.postPaint();
}
if (state.getLogPen().isVisible())
{
state.prepareDraw();
graph.draw(genPath);
state.postDraw();
}
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance()
{
return new MfCmdPolyPolygon();
}
/**
* 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.POLY_POLYGON;
}
public String toString()
{
final StringBuffer b = new StringBuffer();
b.append("[POLYPOLYGON] polycount=");
b.append(getPolygonCount());
b.append('\n');
for (int p = 0; p < getPolygonCount(); p++)
{
b.append(" Polygon ");
b.append(p);
final int[] points_x = getPointsX(p);
final int[] points_y = getPointsY(p);
final int l = points_x.length;
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(") ");
}
b.append('\n');
}
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 numberOfPolygons = record.getParam(0);
//Log.debug("Number Of Polygons: " + numberOfPolygons);
final int[] count = new int[numberOfPolygons];
final Object[] poly_points_x = new Object[numberOfPolygons];
final Object[] poly_points_y = new Object[numberOfPolygons];
// read the length of each polygon
for (int i = 0; i < numberOfPolygons; i++)
{
final int numberOfPointsInPolygon = record.getParam(1 + i);
//Log.debug("Number Of points in polygon: " + numberOfPointsInPolygon);
count[i] = numberOfPointsInPolygon;
}
// getLength?
//Log.debug("record.getLength(): " + (record.getLength() / 2));
// for each polygon, read the points ...
int readPosition = 1 + numberOfPolygons;
for (int i = 0; i < numberOfPolygons; i++)
{
// Position of the points depends on the number of points
// of the previous polygons
final int numberOfPoints = count[i];
final int[] points_x = new int[numberOfPoints];
final int[] points_y = new int[numberOfPoints];
// read position is after numPolygonPointsRead + noOfPolygons + 1 (for the first parameter)
for (int point = 0; point < numberOfPoints; point += 1)
{
points_x[point] = record.getParam(readPosition);
readPosition += 1;
points_y[point] = record.getParam(readPosition);
readPosition += 1;
}
poly_points_x[i] = points_x;
poly_points_y[i] = points_y;
}
setPolygonCount(numberOfPolygons);
setPoints(poly_points_x, poly_points_y);
}
/**
* Creates a new record based on the data stored in the MfCommand.
*
* @return the created record.
*/
public MfRecord getRecord()
throws RecordCreationException
{
final int numberOfPolygons = getPolygonCount();
int pointsTotal = 0;
for (int i = 0; i < numberOfPolygons; i++)
{
pointsTotal += getPointsX(i).length;
}
final MfRecord record = new MfRecord(1 + numberOfPolygons + pointsTotal * 2);
record.setParam(0, numberOfPolygons);
int numberOfPointsRead = 0;
for (int i = 0; i < numberOfPolygons; i++)
{
final int[] x_points = getPointsX(i);
final int[] y_points = getPointsY(i);
final int numberOfPointsInPolygon = x_points.length;
record.setParam(1 + i, numberOfPointsInPolygon);
final int readPos = numberOfPointsRead * 2 + numberOfPolygons + 1;
for (int j = 0; j < numberOfPointsInPolygon; j++)
{
record.setParam((readPos + 1) + j * 2, x_points[i]);
record.setParam((readPos + 2) + j * 2, y_points[i]);
}
numberOfPointsRead += numberOfPointsInPolygon;
}
return record;
}
public void setPoints(final Object[] points_x, final Object[] points_y)
{
this.points_x = points_x;
this.points_y = points_y;
scaleXChanged();
scaleYChanged();
}
public int[] getPointsX(final int polygon)
{
return (int[]) points_x[polygon];
}
public int[] getPointsY(final int polygon)
{
return (int[]) points_y[polygon];
}
public int[] getScaledPointsX(final int polygon)
{
return (int[]) scaled_points_x[polygon];
}
public int[] getScaledPointsY(final int polygon)
{
return (int[]) scaled_points_y[polygon];
}
public void setPolygonCount(final int count)
{
this.polycount = count;
}
public int getPolygonCount()
{
return polycount;
}
/**
* 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()
{
if (scaled_points_x == null)
{
scaled_points_x = new Object[points_x.length];
}
if (scaled_points_x.length < points_x.length)
{
scaled_points_x = new Object[points_x.length];
}
for (int i = 0; i < polycount; i++)
{
scaled_points_x[i] = applyScaleX((int[]) points_x[i], (int[]) scaled_points_x[i]);
}
}
/**
* 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()
{
if (scaled_points_y == null)
{
scaled_points_y = new Object[points_y.length];
}
if (scaled_points_y.length < points_y.length)
{
scaled_points_y = new Object[points_y.length];
}
for (int i = 0; i < polycount; i++)
{
scaled_points_y[i] = applyScaleY((int[]) points_y[i], (int[]) scaled_points_y[i]);
}
}
}