问题是,条形图下的文本与条形图中的条不对齐。我如何使它们正确对齐?需要帮助修复GUI
为了让探测器闭嘴,我还可以补充些什么细节? :)
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class SimpleBarChart extends JPanel {
private double[] value;
private String[] languages;
private String title;
private int gapBetweenBars = 40;//MODIFICATION - NOT A PART OF ORIGINAL CODE
public SimpleBarChart(double[] val, String[] lang, String t) {
languages = lang;
value = val;
title = t;
}
public void paintComponent(Graphics graphics) {
super.paintComponent(graphics);
if (value == null || value.length == 0) {
return;
}
double minValue = 0;
double maxValue = 0;
for (int i = 0; i < value.length; i++) {
if (minValue > value[i]) {
minValue = value[i];
}
if (maxValue < value[i]) {
maxValue = value[i];
}
}
Dimension dim = getSize();
int clientWidth = dim.width;
int clientHeight = dim.height;
int barWidth = clientWidth/value.length;
barWidth = barWidth/3;//MODIFICATION - NOT A PART OF ORIGINAL CODE
Font titleFont = new Font("Book Antiqua", Font.BOLD, 15);
FontMetrics titleFontMetrics = graphics.getFontMetrics(titleFont);
Font labelFont = new Font("Book Antiqua", Font.PLAIN, 10);
FontMetrics labelFontMetrics = graphics.getFontMetrics(labelFont);
int titleWidth = titleFontMetrics.stringWidth(title);
int q = titleFontMetrics.getAscent();
int p = (clientWidth - titleWidth)/2;
graphics.setFont(titleFont);
graphics.drawString(title, p, q);
int top = titleFontMetrics.getHeight();
int bottom = labelFontMetrics.getHeight();
if (maxValue == minValue) {
return;
}
double scale = (clientHeight - top - bottom)/(maxValue - minValue);
q = clientHeight - labelFontMetrics.getDescent();
graphics.setFont(labelFont);
for (int j = 0; j < value.length; j++) {
int valueP = j * (barWidth + gapBetweenBars) + 1; //MODIFICATION - NOT A PART OF ORIGINAL CODE
int valueQ = top;
int height = (int) (value[j] * scale);
if (value[j] >= 0) {
valueQ += (int) ((maxValue - value[j]) * scale);
} else {
valueQ += (int) (maxValue * scale);
height = -height;
}
graphics.setColor(Color.blue);
graphics.fillRect(valueP, valueQ, barWidth - 2, height);
graphics.setColor(Color.black);
graphics.drawRect(valueP, valueQ, barWidth - 2, height);
int labelWidth = labelFontMetrics.stringWidth(languages[j]);
p = j * barWidth + (barWidth - labelWidth)/2;
graphics.drawString(languages[j], p, q);
}
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setSize(500, 500);
double[] value = new double[5];
String[] languages = new String[5];
value[0] = 1;
languages[0] = "Visual Basic";
value[1] = 2;
languages[1] = "PHP";
value[2] = 3;
languages[2] = "C++";
value[3] = 4;
languages[3] = "C";
value[4] = 5;
languages[4] = "Java";
frame.getContentPane().add(new SimpleBarChart(value, languages, "Programming Languages"));
WindowListener winListener = new WindowAdapter() {
public void windowClosing(WindowEvent event) {
System.exit(0);
}
};
frame.addWindowListener(winListener);
frame.setVisible(true);
}
public void setGapBetweenBars(int gapBetweenBars) {
this.gapBetweenBars = gapBetweenBars;
}
public int getGapBetweenBars() {
return this.gapBetweenBars;
}
}
欢迎来到stackoverflow。您最近在您描述问题时发布了一些问题,然后通过了一大段代码。你应该尝试发布可能也会帮助其他人来到这里的问题。像这样的问题太局部化了。在提出问题以使其更有帮助之前,您应该尝试缩小问题的范围。 – Simon 2013-03-04 10:52:06