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Fix yAxis label transform

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refs #48
This commit is contained in:
Fabian Becker 2015-12-10 11:14:27 +01:00
parent db46562f83
commit 6c08d74fd6
2 changed files with 52 additions and 8 deletions
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57
src/eva2/tools/chart2d/ScaledBorder.java
View File

@ -6,7 +6,9 @@ import javax.swing.*;
import javax.swing.border.BevelBorder;
import javax.swing.border.Border;
import java.awt.*;
import java.awt.font.TextAttribute;
import java.awt.geom.AffineTransform;
import java.text.AttributedString;
import java.text.DecimalFormat;
import java.text.NumberFormat;
@ -274,11 +276,10 @@ public class ScaledBorder implements Border {
if (yLabel != null) {
Dimension yld = new Dimension(fm.getAscent() + fm.getDescent(), fm.stringWidth(yLabel));
AffineTransform T = new AffineTransform(0, 1, 1, 0, 0, 0);
Font old = g.getFont(), f = old.deriveFont(T);
g.setFont(f);
g.drawString(yLabel, yLabel2border + fm.getAscent(), innerInsets.top + (cd.height + yld.height) / 2);
g.setFont(old);
drawRotate((Graphics2D) g, yLabel2border + fm.getAscent(), innerInsets.top + (cd.height + yld.height) / 2, 270, yLabel);
}
if (xLabel != null) {
@ -304,6 +305,24 @@ public class ScaledBorder implements Border {
g.setColor(oldColor);
}
/**
* Draw a string at x,y with angle rotation onto a graphics context.
*
* @param g2d Graphics context
* @param x x Position
* @param y y Position
* @param angle Rotation angle
* @param text Text to draw and rotate
*/
private static void drawRotate(Graphics2D g2d, double x, double y, int angle, String text)
{
g2d.translate((float)x,(float)y);
g2d.rotate(Math.toRadians(angle));
g2d.drawString(text,0,0);
g2d.rotate(-Math.toRadians(angle));
g2d.translate(-(float)x,-(float)y);
}
/**
* The scaling of the y-axis is defined here.
*
@ -327,14 +346,16 @@ public class ScaledBorder implements Border {
} else {
scaledV = v;
}
String text = formatY.format(scaledV);
try {
scaledV = formatY.parse(text).doubleValue();
} catch (java.text.ParseException ex) {
}
} catch (java.text.ParseException ignored) {}
Point p = m.getPoint(minx, scaledV);
if (p != null) {
g.drawString(text,
g.drawString(formatScientificNumber(text).getIterator(),
insets.left - fm.stringWidth(text) - v2m - markerLength,
p.y + fontAsc / 2);
g.drawLine(insets.left - markerLength, p.y, insets.left, p.y);
@ -346,6 +367,26 @@ public class ScaledBorder implements Border {
}
}
/**
* Formats a string with format ##E0 to show with a superscript exponent.
*
* @param text Number to transform
* @return Returns an AttributedString with the exponent marked as superscript.
*/
private AttributedString formatScientificNumber(String text) {
int indexOfE = text.indexOf("E");
if (indexOfE == -1) {
return new AttributedString(text);
}
text = text.substring(0, indexOfE) + text.substring(indexOfE + 1);
AttributedString scientificNumber = new AttributedString(text);
scientificNumber.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, indexOfE, text.length());
return scientificNumber;
}
public double getSrcdY(FontMetrics fm, Dimension cd) {
return getSrcdY(fm.getHeight(), cd.height);
}

3
src/eva2/tools/chart2d/package-info.java
View File

@ -1 +1,4 @@
/**
* Charting library used to draw all charts/plots in EvA2
*/
package eva2.tools.chart2d;