/*
* 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.Point;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.IOException;
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 org.pentaho.reporting.libraries.pixie.wmf.bitmap.DIBReader;
/**
* BitBlockTransfer - Copies PixelData of a rectangle to another position
* <p/>
* <pre>
* BOOL BitBlt(
* HDC hdcDest, // handle to destination DC
* int nXDest, // x-coord of destination upper-left corner
* int nYDest, // y-coord of destination upper-left corner
* int nWidth, // width of destination rectangle
* int nHeight, // height of destination rectangle
* HDC hdcSrc, // handle to source DC
* int nXSrc, // x-coordinate of source upper-left corner
* int nYSrc, // y-coordinate of source upper-left corner
* DWORD dwRop // raster operation code
* );
* </pre>
*/
public class MfCmdDibBitBlt extends MfCmd
{
private static final int RECORD_SIZE_SIMPLE = 9;
private static final int RECORD_BASE_SIZE_EXT = 8;
private static final int POS_OPERATION = 0;
private static final int POS_SRC_Y = 2;
private static final int POS_SRC_X = 3;
private static final int SIMPLE_POS_HEIGHT = 5;
private static final int SIMPLE_POS_WIDTH = 6;
private static final int SIMPLE_POS_DST_Y = 7;
private static final int SIMPLE_POS_DST_X = 8;
private static final int EXT_POS_HEIGHT = 4;
private static final int EXT_POS_WIDTH = 5;
private static final int EXT_POS_DST_Y = 6;
private static final int EXT_POS_DST_X = 7;
private BufferedImage image;
private int scaled_destX;
private int scaled_destY;
private int scaled_destWidth;
private int scaled_destHeight;
private int scaled_sourceX;
private int scaled_sourceY;
private int destX;
private int destY;
private int destWidth;
private int destHeight;
private int sourceX;
private int sourceY;
private int operation;
public MfCmdDibBitBlt()
{
}
public BufferedImage getImage()
{
return image;
}
public void setImage(final BufferedImage image)
{
this.image = image;
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay(final WmfFile file)
{
// is not implemented, as we don't have access to the raster data.
}
public String toString()
{
final StringBuffer b = new StringBuffer();
b.append("[DIB_BIT_BLT] records=");
b.append(getOperation());
b.append(" source=");
b.append(getOrigin());
b.append(" destination=");
b.append(getDestination());
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_sourceX = getScaledX(sourceX);
scaled_destX = getScaledX(destX);
scaled_destWidth = getScaledX(destWidth);
}
/**
* A callback function to inform the object, that the x scale has changed and the
* internal coordinate values have to be adjusted.
*/
protected void scaleYChanged()
{
scaled_sourceY = getScaledY(sourceY);
scaled_destY = getScaledY(destY);
scaled_destHeight = getScaledY(destHeight);
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance()
{
return new MfCmdDibBitBlt();
}
/**
* 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.BIT_BLT;
}
public void setOrigin(final int x, final int y)
{
sourceX = x;
sourceY = y;
scaleXChanged();
scaleYChanged();
}
public Point getOrigin()
{
return new Point(sourceX, sourceY);
}
public Rectangle getSource()
{
return new Rectangle(sourceX, sourceY, destWidth, destHeight);
}
public Point getScaledOrigin()
{
return new Point(scaled_sourceX, scaled_sourceY);
}
public Rectangle getScaledSource()
{
return new Rectangle(scaled_sourceX, scaled_sourceY, scaled_destWidth, scaled_destHeight);
}
public void setDestination(final int x, final int y, final int w, final int h)
{
destX = x;
destY = y;
destWidth = w;
destHeight = h;
scaleXChanged();
scaleYChanged();
}
public Rectangle getDestination()
{
return new Rectangle(destX, destY, destWidth, destHeight);
}
public Rectangle getScaledDestination()
{
return new Rectangle(scaled_destX, scaled_destY, scaled_destWidth, scaled_destHeight);
}
public void setOperation(final int op)
{
operation = op;
}
public int getOperation()
{
return operation;
}
/**
* Creates a new record based on the data stored in the MfCommand.
*
* @return the created record.
*/
public MfRecord getRecord()
throws RecordCreationException
{
if (image == null)
{
// the simple form, the complex form would need a DIB implementation.
final MfRecord record = new MfRecord(RECORD_SIZE_SIMPLE);
record.setLongParam(POS_OPERATION, getOperation());
final Rectangle source = getSource();
record.setParam(POS_SRC_Y, (int) source.getY());
record.setParam(POS_SRC_X, (int) source.getX());
// Ignore the handle to the device context
final Rectangle dest = getDestination();
record.setParam(4, 0); // the handle to the device context ... a stored DIB?.
record.setParam(SIMPLE_POS_HEIGHT, (int) dest.getHeight());
record.setParam(SIMPLE_POS_WIDTH, (int) dest.getWidth());
record.setParam(SIMPLE_POS_DST_Y, (int) dest.getY());
record.setParam(SIMPLE_POS_DST_X, (int) dest.getX());
return record;
}
// todo implement the complex form
throw new RecordCreationException("The extended Format of DibBitBlt is not supported");
}
/**
* 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 rop = record.getLongParam(POS_OPERATION);
final int sy = record.getParam(POS_SRC_Y);
final int sx = record.getParam(POS_SRC_X);
setOperation(rop);
setOrigin(sx, sy);
if (record.getLength() == (MfRecord.RECORD_HEADER_SIZE + 8 * 2))
{
// Simple form
final int dh = record.getParam(SIMPLE_POS_HEIGHT);
final int dw = record.getParam(SIMPLE_POS_WIDTH);
final int dy = record.getParam(SIMPLE_POS_DST_Y);
final int dx = record.getParam(SIMPLE_POS_DST_X);
setDestination(dx, dy, dw, dh);
}
else
{
// Complex form
final int dh = record.getParam(EXT_POS_HEIGHT);
final int dw = record.getParam(EXT_POS_WIDTH);
final int dy = record.getParam(EXT_POS_DST_Y);
final int dx = record.getParam(EXT_POS_DST_X);
setDestination(dx, dy, dw, dh);
try
{
// The sourceDib follows on Position 8 til the end if this is not the simple
// form.
final DIBReader reader = new DIBReader();
setImage(reader.setRecord(record, RECORD_BASE_SIZE_EXT));
}
catch (IOException ioe)
{
// failed to load the bitmap ..
}
}
}
}