/*
* 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.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;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
/**
* 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 ..
}
}
}
}