/*
* 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.Rectangle;
import java.awt.geom.Rectangle2D;
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;
/**
* top, left, right and bottom define the points of the clipping region, the resultant
* clipping region is the intersection of this region and the original region.
*/
public class MfCmdIntersectClipRect extends MfCmd
{
private static final int RECORD_SIZE = 4;
private static final int POS_BOTTOM = 3;
private static final int POS_RIGHT = 2;
private static final int POS_TOP = 1;
private static final int POS_LEFT = 0;
private int x;
private int y;
private int width;
private int height;
private int scaled_x;
private int scaled_y;
private int scaled_width;
private int scaled_height;
public MfCmdIntersectClipRect()
{
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay(final WmfFile file)
{
final MfDcState state = file.getCurrentState();
final Rectangle rect = state.getClipRegion();
final Rectangle2D rec2 = rect.createIntersection(getScaledIntersectClipRect());
state.setClipRegion(new Rectangle((int) rec2.getX(),
(int) rec2.getY(),
(int) rec2.getWidth(),
(int) rec2.getHeight()));
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance()
{
return new MfCmdIntersectClipRect();
}
/**
* 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.INTERSECT_CLIP_RECT;
}
public Rectangle getIntersectClipRect()
{
return new Rectangle(x, y, width, height);
}
public Rectangle getScaledIntersectClipRect()
{
return new Rectangle(scaled_x, scaled_y, scaled_width, scaled_height);
}
public String toString()
{
final StringBuffer b = new StringBuffer();
b.append("[INTERSECT_CLIP_RECT] bounds=");
b.append(getIntersectClipRect());
return b.toString();
}
public void setIntersectClipRect(final int x, final int y, final int width,
final int height)
{
this.x = x;
this.y = y;
this.width = width;
this.height = height;
scaleXChanged();
scaleYChanged();
}
/**
* 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 bottom = record.getParam(POS_BOTTOM);
final int right = record.getParam(POS_RIGHT);
final int top = record.getParam(POS_TOP);
final int left = record.getParam(POS_LEFT);
setIntersectClipRect(left, top, right - left, bottom - top);
}
/**
* Creates a new record based on the data stored in the MfCommand.
*
* @return the created record.
*/
public MfRecord getRecord()
{
final Rectangle rc = getIntersectClipRect();
final MfRecord record = new MfRecord(RECORD_SIZE);
record.setParam(POS_BOTTOM, (int) (rc.getY() + rc.getHeight()));
record.setParam(POS_RIGHT, (int) (rc.getX() + rc.getWidth()));
record.setParam(POS_TOP, (int) (rc.getY()));
record.setParam(POS_LEFT, (int) (rc.getX()));
return record;
}
/**
* 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);
scaled_width = getScaledX(width);
}
/**
* 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);
scaled_height = getScaledY(height);
}
}