在Java中用JTable列显示BarChar

我有JTable，我需要显示图表，但我已经厌倦了几个代码，但无法实现我想做的。 这里到目前为止我尝试过的

http://www.jroller.com/Thierry/entry/swing_barchart_rendering_in_a

我希望根据这个图像实现

但是我怎么也没有得到任何渲染器。 请接受任何建议。

Answer 1

好的，这是一个想法……

您可以创建一个布局管理器来计算偏移量并允许元素重叠“列”，而不是使用JTable

原型示例 – !! 不要在生产中使用!!

这只是一个例子，应该用于学习，不要在生产中尝试使用它，还有很多需要改进的地方，例如正确的事件通知API

这个例子使用了JIDE Common Layer API（特别是JideScrollPane ），你可以从这里获得一个副本

 import com.jidesoft.swing.JideScrollPane; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.FontMetrics; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import java.awt.LayoutManager2; import java.awt.LinearGradientPaint; import java.awt.Point; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JViewport; import javax.swing.ScrollPaneConstants; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.border.Border; import javax.swing.border.EmptyBorder; import javax.swing.border.MatteBorder; public class WorkSheetReport { public static final Color WORKING_HOURS_COLOR = new Color(93, 89, 88); public static final Color LUNCH_HOURS_COLOR = new Color(215, 142, 27); public static final Color OTHER_HOURS_COLOR = new Color(30, 141, 213); public static void main(String[] args) { new WorkSheetReport(); } public WorkSheetReport() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { ex.printStackTrace(); } DefaultTimeSheetReport report = new DefaultTimeSheetReport(); report.add(createTimeSheet( "NWD/Full")); report.add(createTimeSheet( "Present", new DefaultTimeEntry(WorkType.WORK, 10, 12.5), new DefaultTimeEntry(WorkType.LUNCH, 12.5, 13.25), new DefaultTimeEntry(WorkType.WORK, 13.25, 18), new DefaultTimeEntry(WorkType.OTHER, 18, 18.5), new DefaultTimeEntry(WorkType.WORK, 18.5, 20.5))); report.add(createTimeSheet( "0.5UUPL", new DefaultTimeEntry(WorkType.WORK, 10, 12.5), new DefaultTimeEntry(WorkType.LUNCH, 12.5, 17.75), new DefaultTimeEntry(WorkType.OTHER, 17.75, 18), new DefaultTimeEntry(WorkType.WORK, 18, 20))); report.add(createTimeSheet( "Present", new DefaultTimeEntry(WorkType.WORK, 11, 13), new DefaultTimeEntry(WorkType.LUNCH, 13, 13.5), new DefaultTimeEntry(WorkType.WORK, 13.5, 17.75), new DefaultTimeEntry(WorkType.OTHER, 17.75, 18), new DefaultTimeEntry(WorkType.WORK, 18, 20.5))); report.add(createTimeSheet( "Present", new DefaultTimeEntry(WorkType.WORK, 10, 12.75), new DefaultTimeEntry(WorkType.LUNCH, 12.75, 13.5), new DefaultTimeEntry(WorkType.WORK, 13.5, 17.5), new DefaultTimeEntry(WorkType.OTHER, 17.5, 17.75), new DefaultTimeEntry(WorkType.WORK, 17.75, 20.5))); report.add(createTimeSheet( "Present", new DefaultTimeEntry(WorkType.WORK, 9.75, 12), new DefaultTimeEntry(WorkType.LUNCH, 12, 12.5), new DefaultTimeEntry(WorkType.WORK, 12.5, 17.25), new DefaultTimeEntry(WorkType.OTHER, 17.25, 17.75), new DefaultTimeEntry(WorkType.WORK, 17.75, 20))); report.add(createTimeSheet( "Present", new DefaultTimeEntry(WorkType.WORK, 10, 11.75), new DefaultTimeEntry(WorkType.LUNCH, 11.75, 12.25), new DefaultTimeEntry(WorkType.WORK, 12.25, 17.5), new DefaultTimeEntry(WorkType.OTHER, 17.5, 18), new DefaultTimeEntry(WorkType.WORK, 18, 20.25))); report.add(createTimeSheet( "NWD/Full")); report.add(createTimeSheet( "Present", new DefaultTimeEntry(WorkType.WORK, 10, 12.5), new DefaultTimeEntry(WorkType.LUNCH, 12.5, 13.5), new DefaultTimeEntry(WorkType.WORK, 13.5, 18), new DefaultTimeEntry(WorkType.OTHER, 18, 18.5), new DefaultTimeEntry(WorkType.WORK, 18.5, 20.5))); TimeSheetReportPane pane = new TimeSheetReportPane(report); JFrame frame = new JFrame("Testing"); frame.getContentPane().setBackground(Color.BLACK); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JideScrollPane sp = new JideScrollPane(pane); sp.setColumnHeadersHeightUnified(true); frame.add(sp); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } protected TimeSheet createTimeSheet(String name, TimeEntry... entries) { DefaultTimeSheet ts = new DefaultTimeSheet(name); for (TimeEntry entry : entries) { ts.add(entry); } return ts; } protected static String format(double time) { time *= 60 * 60; // to seconds int hours = (int) Math.floor(time / (60 * 60)); double remainder = time % (60 * 60); int mins = (int) Math.floor(remainder / 60); int secs = (int) Math.floor(time % 60); return hours + ":" + mins + ":" + secs; } public class TimeSheetReportPane extends JPanel { private TimeSheetReport report; private int columnWidth; private int rowHeight; public TimeSheetReportPane(TimeSheetReport report) { this.report = report; setLayout(new GridBagLayout()); setBackground(Color.BLACK); FontMetrics fm = getFontMetrics(UIManager.getFont("Label.font")); columnWidth = fm.stringWidth("0000"); rowHeight = fm.getHeight() + 8; GridBagConstraints gbc = new GridBagConstraints(); gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.weightx = 1; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.insets = new Insets(0, 0, 1, 0); int count = 0; for (TimeSheet ts : report) { Color color = getColorForSheet(count); TimeSheetPane pane = new TimeSheetPane(this, ts); pane.setBackground(color); add(pane, gbc); count++; } gbc.weighty = 1; JPanel fill = new JPanel(); fill.setOpaque(false); add(fill, gbc); } public Color getColorForSheet(int index) { Color endColor = Color.GRAY; Color startColor = Color.DARK_GRAY; double progress = (double) index / (double) getReport().size(); return blend(startColor, endColor, progress); } public TimeSheetReport getReport() { return report; } public int getRowHeight() { return rowHeight; } public int getColumnWidth() { return columnWidth; } @Override public void addNotify() { super.addNotify(); configureEnclosingScrollPane(); } protected void configureEnclosingScrollPane() { Container parent = getParent(); if (parent instanceof JViewport) { JViewport viewport = (JViewport) parent; parent = viewport.getParent(); if (parent instanceof JideScrollPane) { JideScrollPane sp = (JideScrollPane) parent; sp.setRowFooterView(new RowFooter(this)); } if (parent instanceof JScrollPane) { JScrollPane sp = (JScrollPane) parent; JLabel leftHeader = new JLabel("Status"); leftHeader.setForeground(Color.WHITE); leftHeader.setBackground(Color.BLACK); leftHeader.setOpaque(true); leftHeader.setHorizontalAlignment(JLabel.CENTER); leftHeader.setVerticalAlignment(JLabel.TOP); leftHeader.setBorder(new EdgeBorder(EdgeBorder.Edge.RIGHT, Color.WHITE, Color.BLACK)); sp.setCorner(ScrollPaneConstants.UPPER_LEFT_CORNER, leftHeader); JLabel rightHeader = new JLabel("Working Hr"); rightHeader.setForeground(Color.WHITE); rightHeader.setBackground(Color.BLACK); rightHeader.setOpaque(true); rightHeader.setHorizontalAlignment(JLabel.CENTER); rightHeader.setBorder(new EdgeBorder(EdgeBorder.Edge.LEFT, Color.WHITE, Color.BLACK)); sp.setCorner(ScrollPaneConstants.UPPER_RIGHT_CORNER, rightHeader); sp.setRowHeaderView(new RowHeader(this)); sp.setColumnHeaderView(new ColumnHeader(this)); } } } } public class ColumnHeader extends JPanel { private TimeSheetReportPane reportPane; public ColumnHeader(TimeSheetReportPane tsrp) { reportPane = tsrp; setBackground(Color.BLACK); setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridheight = GridBagConstraints.REMAINDER; gbc.weighty = 1; gbc.fill = GridBagConstraints.VERTICAL; gbc.ipady = 8; Border border = new MatteBorder(0, 0, 0, 1, Color.GRAY); for (int hour = 8; hour < 25; hour++) { JLabel label = new JLabel(Integer.toString(hour)) { @Override public Dimension getPreferredSize() { Dimension dim = super.getPreferredSize(); dim.width = reportPane.getColumnWidth(); return dim; } @Override public Dimension getMinimumSize() { return getPreferredSize(); } }; label.setVerticalAlignment(JLabel.TOP); label.setHorizontalAlignment(JLabel.CENTER); label.setForeground(Color.WHITE); label.setBorder(border); add(label, gbc); } gbc.weightx = 1; JPanel fill = new JPanel(); fill.setOpaque(false); add(fill, gbc); } } public class RowHeader extends JPanel { private TimeSheetReportPane reportPane; public RowHeader(TimeSheetReportPane tsrp) { reportPane = tsrp; setBackground(Color.BLACK); setLayout(new GridBagLayout()); TimeSheetReport tsr = reportPane.getReport(); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.weightx = 1; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.ipadx = 16; gbc.ipady = 2; gbc.insets = new Insets(0, 0, 1, 0); int index = 0; for (TimeSheet ts : tsr) { JLabel label = new JLabel(ts.getName()) { @Override public Dimension getPreferredSize() { Dimension dim = super.getPreferredSize(); dim.height = reportPane.getRowHeight(); return dim; } @Override public Dimension getMinimumSize() { return getPreferredSize(); } }; label.setHorizontalAlignment(JLabel.CENTER); label.setForeground(Color.WHITE); label.setBackground(reportPane.getColorForSheet(index)); label.setOpaque(true); add(label, gbc); index++; } gbc.weighty = 1; JPanel fill = new JPanel(); fill.setOpaque(false); add(fill, gbc); } } public class RowFooter extends JPanel { private TimeSheetReportPane reportPane; public RowFooter(TimeSheetReportPane tsrp) { reportPane = tsrp; setBackground(Color.BLACK); setLayout(new GridBagLayout()); TimeSheetReport tsr = reportPane.getReport(); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.weightx = 1; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.ipadx = 36; gbc.ipady = 2; gbc.insets = new Insets(0, 0, 1, 0); int index = 0; for (TimeSheet ts : tsr) { double time = ts.getWorkingHours(); String workHrs = ""; if (time > 0) { workHrs = format(time); } JLabel label = new JLabel(workHrs) { @Override public Dimension getPreferredSize() { Dimension dim = super.getPreferredSize(); dim.height = reportPane.getRowHeight(); return dim; } @Override public Dimension getMinimumSize() { return getPreferredSize(); } }; label.setHorizontalAlignment(JLabel.CENTER); label.setForeground(Color.WHITE); label.setBackground(reportPane.getColorForSheet(index)); label.setOpaque(true); add(label, gbc); index++; } gbc.weighty = 1; JPanel fill = new JPanel(); fill.setOpaque(false); add(fill, gbc); } } public static class EdgeBorder implements Border { public enum Edge { LEFT, RIGHT } private Edge edge; private Color startColor; private Color endColor; public EdgeBorder(Edge edge, Color startColor, Color endColor) { this.edge = edge; this.startColor = startColor; this.endColor = endColor; } @Override public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) { int xPos = x; switch (edge) { case RIGHT: xPos = x + (width - 1); } LinearGradientPaint lgp = new LinearGradientPaint( new Point(x, 0), new Point(x, height), new float[]{0, 1}, new Color[]{startColor, endColor}); Graphics2D g2d = (Graphics2D) g; g2d.setPaint(lgp); g2d.drawLine(xPos, y, xPos, y + height); } @Override public Insets getBorderInsets(Component c) { int left = edge == Edge.LEFT ? 1 : 0; int right = edge == Edge.RIGHT ? 1 : 0; return new Insets(0, left, 0, right); } @Override public boolean isBorderOpaque() { return false; } } /** * Blend two colors. * * @param color1 First color to blend. * @param color2 Second color to blend. * @param ratio Blend ratio. 0.5 will give even blend, 1.0 will return color1, * 0.0 will return color2 and so on. * @return Blended color. */ public static Color blend(Color color1, Color color2, double ratio) { float r = (float) ratio; float ir = (float) 1.0 - r; float rgb1[] = new float[3]; float rgb2[] = new float[3]; color1.getColorComponents(rgb1); color2.getColorComponents(rgb2); float red = rgb1[0] * r + rgb2[0] * ir; float green = rgb1[1] * r + rgb2[1] * ir; float blue = rgb1[2] * r + rgb2[2] * ir; if (red < 0) { red = 0; } else if (red > 255) { red = 255; } if (green < 0) { green = 0; } else if (green > 255) { green = 255; } if (blue < 0) { blue = 0; } else if (blue > 255) { blue = 255; } Color color = null; try { color = new Color(red, green, blue); } catch (IllegalArgumentException exp) { exp.printStackTrace(); } return color; } public class TimeSheetPane extends JPanel { private final JPanel timeEntriesPane; public TimeSheetPane(TimeSheetReportPane reportPane, TimeSheet ts) { timeEntriesPane = new JPanel(new TimeSheetLayoutManager(reportPane.getColumnWidth(), reportPane.getRowHeight())); timeEntriesPane.setBackground(Color.BLACK); setBorder(new EmptyBorder(1, 0, 1, 0)); setLayout(new BorderLayout()); add(timeEntriesPane); for (TimeEntry te : ts) { JLabel label = createLabel(te.getType().getColor()); String startTime = format(te.getStartTime()); String duration = format(te.getDuration()); label.setToolTipText("StartTime: " + startTime + "
Duration: " + duration); timeEntriesPane.add(label, te); } } protected JLabel createLabel(Color color) { JLabel label = new JLabel(); label.setOpaque(true); label.setBackground(color); return label; } } public class TimeSheetLayoutManager implements LayoutManager2 { private Map mapConstraints; private int colWidth; private int rowHeight; public TimeSheetLayoutManager(int colWidth, int rowHeight) { mapConstraints = new HashMap<>(25); this.colWidth = colWidth; this.rowHeight = rowHeight; } @Override public void addLayoutComponent(Component comp, Object constraints) { if (constraints instanceof TimeEntry) { mapConstraints.put(comp, (TimeEntry) constraints); } else { throw new IllegalArgumentException( constraints == null ? "Null is not a valid constraint" : constraints.getClass().getName() + " is not a valid TimeEntry constraint" ); } } @Override public Dimension maximumLayoutSize(Container target) { return preferredLayoutSize(target); } @Override public float getLayoutAlignmentX(Container target) { return 0.5f; } @Override public float getLayoutAlignmentY(Container target) { return 0.5f; } @Override public void invalidateLayout(Container target) { } @Override public void addLayoutComponent(String name, Component comp) { throw new UnsupportedOperationException("Not supported yet."); } @Override public void removeLayoutComponent(Component comp) { mapConstraints.remove(comp); } @Override public Dimension preferredLayoutSize(Container parent) { return new Dimension(colWidth * (24 - 8), rowHeight); } @Override public Dimension minimumLayoutSize(Container parent) { return preferredLayoutSize(parent); } @Override public void layoutContainer(Container parent) { Insets insets = parent.getInsets(); int width = parent.getWidth() - (insets.left + insets.right); int height = rowHeight; int hourWidth = colWidth; int offset = 8; for (Component comp : mapConstraints.keySet()) { TimeEntry te = mapConstraints.get(comp); double startTime = te.getStartTime(); double duration = te.getDuration(); startTime -= offset; int x = (int) Math.round(startTime * hourWidth); int unitWidth = (int) Math.round(duration * hourWidth); comp.setLocation(x, insets.top); comp.setSize(unitWidth, height); } } } public enum WorkType { WORK(WORKING_HOURS_COLOR), LUNCH(LUNCH_HOURS_COLOR), OTHER(OTHER_HOURS_COLOR); private Color color; private WorkType(Color color) { this.color = color; } public Color getColor() { return color; } } public interface TimeEntry { public WorkType getType(); public double getStartTime(); public double getDuration(); } public interface TimeSheet extends Iterable { public String getName(); public int size(); public TimeEntry get(int index); public double getWorkingHours(); } public interface TimeSheetReport extends Iterable { public int size(); public TimeSheet get(int index); } public class DefaultTimeEntry implements TimeEntry { private final double startTime; private final double endTime; private final WorkType workType; public DefaultTimeEntry(WorkType type, double startTime, double endTime) { this.startTime = startTime; this.endTime = endTime; this.workType = type; } @Override public double getStartTime() { return startTime; } public double getEndTime() { return endTime; } @Override public double getDuration() { return endTime - startTime; } @Override public WorkType getType() { return workType; } } public class DefaultTimeSheet implements TimeSheet { private final List timeEntries; private final String name; public DefaultTimeSheet(String name) { this.name = name; timeEntries = new ArrayList<>(25); } public TimeSheet add(TimeEntry te) { timeEntries.add(te); return this; } @Override public Iterator iterator() { return timeEntries.iterator(); } @Override public int size() { return timeEntries.size(); } @Override public TimeEntry get(int index) { return timeEntries.get(index); } @Override public String getName() { return name; } @Override public double getWorkingHours() { double time = 0; for (TimeEntry te : this) { switch (te.getType()) { case WORK: time += te.getDuration(); break; } } return time; } } public class DefaultTimeSheetReport implements TimeSheetReport { private final List timeSheets; public DefaultTimeSheetReport() { timeSheets = new ArrayList<>(25); } public DefaultTimeSheetReport add(TimeSheet ts) { timeSheets.add(ts); return this; } @Override public int size() { return timeSheets.size(); } @Override public TimeSheet get(int index) { return timeSheets.get(index); } @Override public Iterator iterator() { return timeSheets.iterator(); } } } 

Answer 2

我会尝试3列表。 对于中间列，我将使用自定义渲染器 – 一个带有JLabel的JPanel。 标签可以具有不同的列和大小。

TableModel应该保留条形图的数据源，准备渲染器组件意味着读取单元格值，从单元格中提取barchar数据，并在JPanel（渲染器组件）中设置JLabel的颜色/大小