/*
* 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.*;
import java.awt.geom.Arc2D;
/**
* The exact same as an arc, only the arc is closed, and may be filled with a brush.
* <p/>
* The points (nLeftRect, nTopRect) and (nRightRect, nBottomRect) specify the bounding rectangle. An ellipse formed by
* the specified bounding rectangle defines the curve of the arc. The arc extends in the current drawing direction from
* the point where it intersects the radial from the center of the bounding rectangle to the (nXStartArc, nYStartArc)
* point. The arc ends where it intersects the radial from the center of the bounding rectangle to the (nXEndArc,
* nYEndArc) point. If the starting point and ending point are the same, a complete ellipse is drawn.
*/
public class MfCmdChord extends MfCmd {
private static final int PARAM_X_END_POS = 0;
private static final int PARAM_Y_END_POS = 1;
private static final int PARAM_X_START_POS = 2;
private static final int PARAM_Y_START_POS = 3;
private static final int PARAM_BOTTOM_POS = 4;
private static final int PARAM_RIGHT_POS = 5;
private static final int PARAM_TOP_POS = 6;
private static final int PARAM_LEFT_POS = 7;
private static final int RECORD_SIZE = 8;
private int x;
private int y;
private int width;
private int height;
private int xstart;
private int ystart;
private int xend;
private int yend;
private int scaled_x;
private int scaled_y;
private int scaled_width;
private int scaled_height;
private int scaled_xstart;
private int scaled_ystart;
private int scaled_xend;
private int scaled_yend;
public MfCmdChord() {
}
/**
* 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 );
scaled_xstart = getScaledX( xstart );
scaled_xend = getScaledX( xend );
}
/**
* 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 );
scaled_ystart = getScaledY( xstart );
scaled_yend = getScaledY( xend );
}
/**
* 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.CHORD;
}
/**
* Replays the command on the given WmfFile.
*
* @param file the meta file.
*/
public void replay( final WmfFile file ) {
final Graphics2D graph = file.getGraphics2D();
final Rectangle rec = getBounds();
final Point start = getStartingIntersection();
final Point end = getEndingIntersection();
final Arc2D arc = new Arc2D.Double();
arc.setArcType( Arc2D.CHORD );
arc.setFrame( rec.x, rec.y, rec.width, rec.height );
arc.setAngles( start.x, start.y, end.x, end.y );
final MfDcState state = file.getCurrentState();
if ( state.getLogBrush().isVisible() ) {
state.preparePaint();
graph.fill( arc );
state.postPaint();
}
if ( state.getLogPen().isVisible() ) {
state.prepareDraw();
graph.draw( arc );
state.postDraw();
}
}
/**
* Creates a empty unintialized copy of this command implementation.
*
* @return a new instance of the command.
*/
public MfCmd getInstance() {
return new MfCmdChord();
}
public Rectangle getBounds() {
return new Rectangle( x, y, width, height );
}
public Rectangle getScaledBounds() {
return new Rectangle( scaled_x, scaled_y, scaled_width, scaled_height );
}
public void setBounds( 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();
}
public void setStartingIntersection( final int x, final int y ) {
xstart = x;
ystart = y;
scaleXChanged();
scaleYChanged();
}
public Point getStartingIntersection() {
return new Point( xstart, ystart );
}
public Point getScaledStartingIntersection() {
return new Point( scaled_xstart, scaled_ystart );
}
public void setEndingIntersection( final int x, final int y ) {
xend = x;
yend = y;
scaleXChanged();
scaleYChanged();
}
public Point getEndingIntersection() {
return new Point( xend, yend );
}
public Point getScaledEndingIntersection() {
return new Point( scaled_xend, scaled_yend );
}
/**
* 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 xend = record.getParam( PARAM_X_END_POS );
final int yend = record.getParam( PARAM_Y_END_POS );
final int xstart = record.getParam( PARAM_X_START_POS );
final int ystart = record.getParam( PARAM_Y_START_POS );
final int bottom = record.getParam( PARAM_BOTTOM_POS );
final int right = record.getParam( PARAM_RIGHT_POS );
final int top = record.getParam( PARAM_TOP_POS );
final int left = record.getParam( PARAM_LEFT_POS );
setBounds( left, top, right - left, bottom - top );
setStartingIntersection( xstart, ystart );
setEndingIntersection( xend, yend );
}
/**
* Creates a new record based on the data stored in the MfCommand.
*
* @return the created record.
*/
public MfRecord getRecord() {
final MfRecord record = new MfRecord( RECORD_SIZE );
final Rectangle bounds = getBounds();
final Point start = getStartingIntersection();
final Point end = getEndingIntersection();
record.setParam( PARAM_LEFT_POS, (int) bounds.getX() );
record.setParam( PARAM_TOP_POS, (int) bounds.getY() );
record.setParam( PARAM_RIGHT_POS, (int) ( bounds.getX() + bounds.getWidth() ) );
record.setParam( PARAM_BOTTOM_POS, (int) ( bounds.getY() + bounds.getHeight() ) );
record.setParam( PARAM_Y_START_POS, (int) ( start.getY() ) );
record.setParam( PARAM_X_START_POS, (int) ( start.getX() ) );
record.setParam( PARAM_Y_END_POS, (int) ( end.getY() ) );
record.setParam( PARAM_X_END_POS, (int) ( end.getX() ) );
return record;
}
public String toString() {
final StringBuffer b = new StringBuffer( 100 );
b.append( "[CHORD] bounds=" );
b.append( getBounds() );
b.append( " startIntersection=" );
b.append( getStartingIntersection() );
b.append( " endingIntersection=" );
b.append( getEndingIntersection() );
return b.toString();
}
}