/*
* Open Source Physics software is free software as described near the bottom of this code file.
*
* For additional information and documentation on Open Source Physics please see:
* <http://www.opensourcephysics.org/>
*/
package org.opensourcephysics.display.axes;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import org.opensourcephysics.display.DrawingPanel;
import org.opensourcephysics.display.Interactive;
/**
* XAxis: an x axis that knows how to draw itself in a drawing panel.
* Copyright: Copyright (c) 2005 Gould, Christian, and Tobochnik
* @author Wolfgang Christian
* @version 1.0
*/
public class XAxis extends XYAxis {
/**
* Constructor XAxis
*/
public XAxis() {
this("X Axis"); //$NON-NLS-1$
}
/**
* Constructor XAxis
* @param title
*/
public XAxis(String title) {
super();
setTitle(title);
}
/**
* Draws the axis in the drawing panel.
* @param drawingPanel
* @param g
*/
public void draw(DrawingPanel drawingPanel, Graphics g) {
int pixLoc = drawingPanel.yToPix(location);
if(pixLoc<1) {
location = drawingPanel.getYMin();
}
if(pixLoc>drawingPanel.getHeight()-1) {
location = drawingPanel.getYMax();
}
Graphics2D g2 = (Graphics2D) g;
Shape clipShape = g2.getClip();
g2.clipRect(0, 0, drawingPanel.getWidth(), drawingPanel.getHeight());
switch(locationType) {
case DRAW_AT_LOCATION :
case DRAW_IN_DISPLAY :
drawInsideDisplay(drawingPanel, g);
break;
case DRAW_IN_GUTTER :
drawInsideGutter(drawingPanel, g);
break;
default :
drawInsideDisplay(drawingPanel, g);
break;
}
g2.setClip(clipShape);
}
private void drawInsideDisplay(DrawingPanel drawingPanel, Graphics g) {
Color foreground = drawingPanel.getForeground();
int bottomGutter = drawingPanel.getBottomGutter();
int rightGutter = drawingPanel.getRightGutter();
int leftGutter = drawingPanel.getLeftGutter();
int topGutter = drawingPanel.getTopGutter();
FontMetrics fm = g.getFontMetrics();
int sw = 0; // the string width
g.setColor(foreground);
if(locationType==XYAxis.DRAW_IN_DISPLAY) {
location = (drawingPanel.getYMax()+drawingPanel.getYMin())/2;
}
int xo = leftGutter;
int yo = drawingPanel.yToPix(location);
int w = drawingPanel.getWidth()-leftGutter-rightGutter;
//int h = drawingPanel.getHeight()-bottomGutter-topGutter;
g.drawLine(xo, yo, xo+w, yo);
calculateLabels(drawingPanel.getXMin(), drawingPanel.getXMax(), 1+w/35);
String[] temp_strings = label_string; // get a reference for thread safety
double[] temp_values = label_value; // get a reference for thread safety
if(temp_strings.length!=temp_values.length) {
return;
}
for(int i = 0, n = temp_strings.length; i<n; i++) {
if(axisType==LINEAR) {
int xpix = drawingPanel.xToPix(temp_values[i]*decade_multiplier);
if(showMajorGrid) {
g.setColor(majorGridColor);
g.drawLine(xpix, topGutter+1, xpix, drawingPanel.getHeight()-bottomGutter-1);
g.setColor(foreground);
}
g.drawLine(xpix, yo-5, xpix, yo+5);
sw = fm.stringWidth(temp_strings[i]);
g.drawString(temp_strings[i], xpix-sw/2, yo+18);
} else { // log axis
int xpix = drawingPanel.xToPix(Math.pow(10, temp_values[i]*decade_multiplier));
if(showMajorGrid) {
g.setColor(majorGridColor);
g.drawLine(xpix, topGutter+1, xpix, drawingPanel.getHeight()-bottomGutter-1);
g.setColor(foreground);
}
g.drawLine(xpix, yo-5, xpix, yo+5);
sw = fm.stringWidth(logBase);
drawMultiplier(xpix-sw/2, yo+18, (int) temp_values[i], (Graphics2D) g);
}
}
int ypix = drawingPanel.getHeight()-Math.max(bottomGutter/2, 6);
Graphics2D g2 = (Graphics2D) g;
Font oldFont = g2.getFont();
if((axisType==LINEAR)&&(label_exponent!=0)) {
g2.setColor(Color.red);
g2.drawString("x10", drawingPanel.getWidth()-36, ypix); //$NON-NLS-1$
g2.setFont(g2.getFont().deriveFont(Font.PLAIN, 9.0f));
g2.drawString(""+label_exponent, drawingPanel.getWidth()-16, ypix-6); //$NON-NLS-1$
}
g2.setColor(Color.black);
if(axisLabel!=null) {
axisLabel.setX((drawingPanel.getXMax()+drawingPanel.getXMin())/2);
axisLabel.setY(drawingPanel.getYMin()-20/drawingPanel.getYPixPerUnit());
axisLabel.setColor(foreground);
axisLabel.draw(drawingPanel, g2);
}
g2.setFont(oldFont);
}
private void drawInsideGutter(DrawingPanel drawingPanel, Graphics g) {
Color foreground = drawingPanel.getForeground();
int bottomGutter = drawingPanel.getBottomGutter();
int rightGutter = drawingPanel.getRightGutter();
int leftGutter = drawingPanel.getLeftGutter();
int topGutter = drawingPanel.getTopGutter();
FontMetrics fm = g.getFontMetrics();
int sw = 0; // the string width
g.setColor(foreground);
int xo = leftGutter;
int yo = drawingPanel.getHeight()-bottomGutter-1;
int w = drawingPanel.getWidth()-leftGutter-rightGutter;
calculateLabels(drawingPanel.getXMin(), drawingPanel.getXMax(), 1+w/35);
String[] temp_strings = label_string; // get a reference for thread safety
double[] temp_values = label_value; // get a reference for thread safety
if(temp_strings.length!=temp_values.length) {
return;
}
for(int i = 0, n = temp_strings.length; i<n; i++) {
if(axisType==LINEAR) {
int xpix = drawingPanel.xToPix(temp_values[i]*decade_multiplier);
if(showMajorGrid) {
g.setColor(majorGridColor);
g.drawLine(xpix, topGutter+1, xpix, yo);
g.setColor(foreground);
}
g.drawLine(xpix, yo, xpix, yo+5);
sw = fm.stringWidth(temp_strings[i]);
g.drawString(temp_strings[i], xpix-sw/2, yo+18);
} else { // log axis
int xpix = drawingPanel.xToPix(Math.pow(10, temp_values[i]*decade_multiplier));
if(showMajorGrid) {
g.setColor(majorGridColor);
g.drawLine(xpix, topGutter+1, xpix, yo);
g.setColor(foreground);
}
g.drawLine(xpix, yo, xpix, yo+5);
sw = fm.stringWidth(logBase);
drawMultiplier(xpix-sw/2, yo+18, (int) temp_values[i], (Graphics2D) g);
}
}
g.drawLine(xo, yo, xo+w, yo);
int ypix = drawingPanel.getHeight()-Math.max(bottomGutter/2-15, 6);
Graphics2D g2 = (Graphics2D) g;
if((axisType==LINEAR)&&(label_exponent!=0)) {
g2.setColor(Color.red);
g2.drawString("x10", drawingPanel.getWidth()-36, ypix); //$NON-NLS-1$
g2.setFont(g2.getFont().deriveFont(Font.PLAIN, 9.0f));
g2.drawString(""+label_exponent, drawingPanel.getWidth()-16, ypix-6); //$NON-NLS-1$
}
g2.setColor(Color.black);
if(axisLabel!=null) {
//axisLabel.setX((drawingPanel.getXMax()+drawingPanel.getXMin())/2);
axisLabel.setX(drawingPanel.pixToX((drawingPanel.getWidth()+leftGutter-rightGutter)/2));
//axisLabel.setY(drawingPanel.pixToY(drawingPanel.getHeight()-Math.max(bottomGutter/2-10, 10)));
FontMetrics labelFontMetrics = drawingPanel.getFontMetrics(labelFont);
axisLabel.setY(drawingPanel.pixToY(drawingPanel.getHeight()-Math.max(bottomGutter-2*labelFontMetrics.getHeight()-4, 10)));
axisLabel.setColor(foreground);
axisLabel.draw(drawingPanel, g2);
}
}
// implements interactive interface
public Interactive findInteractive(DrawingPanel panel, int xpix, int ypix) {
if(!enabled) {
return null;
}
if(Math.abs(panel.yToPix(location)-ypix)<2) {
return this;
}
return null;
}
public void setXY(double x, double y) {
location = y;
}
public void setY(double y) {
location = y;
}
}
/*
* Open Source Physics software is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public License (GPL) as
* published by the Free Software Foundation; either version 2 of the License,
* or(at your option) any later version.
* Code that uses any portion of the code in the org.opensourcephysics package
* or any subpackage (subdirectory) of this package must must also be be released
* under the GNU GPL license.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
* or view the license online at http://www.gnu.org/copyleft/gpl.html
*
* Copyright (c) 2007 The Open Source Physics project
* http://www.opensourcephysics.org
*/