Java 根据标题中的文本设置JTable的列宽
我需要根据标题中的文本获得适当的表大小。它包含捷克人名的缩写,如:“Po”、“Út”、“St”、atc。但不是显示这三个点Java 根据标题中的文本设置JTable的列宽,java,swing,jtable,jtableheader,preferredsize,Java,Swing,Jtable,Jtableheader,Preferredsize,我需要根据标题中的文本获得适当的表大小。它包含捷克人名的缩写,如:“Po”、“Út”、“St”、atc。但不是显示这三个点 try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelExc
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
}
我有以下代码:
宽度
,高度
-所有最小行/列大小的最大值allWidth
,allHeight
-应为整个表格的总宽度和高度
//GET DIMENSION
int width = 0;
int height = 0;
int allWidth, allHeight;
for (int col = 0; col < table.getColumnCount(); col++) {
TableColumn tableColumn = table.getTableHeader().getColumnModel().getColumn(col);
TableCellRenderer renderer = tableColumn.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component component = renderer.getTableCellRendererComponent(table,
tableColumn.getHeaderValue(), false, false, -1, col);
width = Math.max(component.getPreferredSize().width, width);
table.getColumnModel().getColumn(col).setPreferredWidth(width);
}
allWidth = table.getColumnCount() * width;
for (int row = 0; row < table.getRowCount(); row++) {
TableCellRenderer renderer = table.getCellRenderer(row, 0);
Component comp = table.prepareRenderer(renderer, row, 0);
height = Math.max(comp.getMinimumSize().height, height);
}
allHeight = table.getRowCount() * height;
//HERE I SET WIDTHS AND HEIGHTS
table.setRowHeight(height);
table.setMinimumSize(new Dimension(allWidth, allHeight));
scrollPane.setMinimumSize(new Dimension(allWidth, allHeight));
我还改变了外观和感觉,这导致了这三个点。否则,将正确显示名称
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
}
这就是我初始化JTable和JScrollPane的方式,我觉得这样也可以
setTable(new JTable());
getTable().setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
getTable().setAutoscrolls(false);
getTable().getTableHeader().setResizingAllowed(false);
getTable().getTableHeader().setReorderingAllowed(false);
getTable().setColumnSelectionAllowed(true);
getTable().setRowSelectionAllowed(true);
getTable().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
tableModel = new CalendarTableModel(); //my class extended from AbstractTableModel
getTable().setModel(tableModel);
scrollPane = new JScrollPane(table,JScrollPane.VERTICAL_SCROLLBAR_NEVER,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setAutoscrolls(false);
问题:如果我没有将带有gbc的滚动窗格设置为自动调整大小,它将获得可能的最小大小,除非我手动计算并设置
表
和滚动窗格
的最小大小。(左图)
使用这个设置,我得到的结果在中间PIC,但也太小。(没有日期名称,高度也稍微小一些。)
我不知道还有什么更好的方法可以做到这一点,到目前为止,我还没有发现任何东西对我有帮助。
当我考虑一些填充,例如2像素,并调整allWidth、allHeight的计算时,如下所示:
allHeight = (1+table.getRowCount()+pady) * height; //plus one line of header
allWidth = table.getColumnCount() * width;
table.getColumnModel().getColumn(col).setPreferredWidth(width);
我在右边看到了这张照片。下面是一个简单完整的可编译类,演示了该问题:
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class Main {
public static void main(String[] args) {
new Main().start();
}
private void start() {
JFrame f = new JFrame();
f.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
initTable();
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
}
JPanel calendar = new JPanel();
calendar.setLayout(new GridBagLayout());
calendar.setBorder(BorderFactory.createTitledBorder("Calendar"));
gbc.fill = GridBagConstraints.NONE;
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weighty = 0;
gbc.weightx = 0;
calendar.add(scrollPane, gbc);
f.add(calendar,gbc);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
JTable table;
JScrollPane scrollPane;
CalendarTableModel tableModel;
private void initTable() {
setTable(new JTable());
getTable().setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
getTable().setAutoscrolls(false);
getTable().getTableHeader().setResizingAllowed(false);
getTable().getTableHeader().setReorderingAllowed(false);
getTable().setColumnSelectionAllowed(true);
getTable().setRowSelectionAllowed(true);
getTable().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
tableModel = new CalendarTableModel(); //my class extended from AbstractTableModel
getTable().setModel(tableModel);
scrollPane = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_NEVER, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setAutoscrolls(false);
//GET DIMENSION
int width = 0;
int height = 0;
int allWidth, allHeight;
int padx = 2,pady = 2;
for (int col = 0; col < table.getColumnCount(); col++) {
TableColumn tableColumn = table.getTableHeader().getColumnModel().getColumn(col);
TableCellRenderer renderer = tableColumn.getHeaderRenderer();
if (renderer == null) {
renderer = table.getTableHeader().getDefaultRenderer();
}
Component component = renderer.getTableCellRendererComponent(table,
tableColumn.getHeaderValue(), false, false, -1, col);
width = Math.max(component.getPreferredSize().width, width);
table.getColumnModel().getColumn(col).setPreferredWidth(width);
}
allWidth = (table.getColumnCount()+padx) * width;
for (int row = 0; row < table.getRowCount(); row++) {
TableCellRenderer renderer = table.getCellRenderer(row, 0);
Component comp = table.prepareRenderer(renderer, row, 0);
height = Math.max(comp.getMinimumSize().height, height);
}
allHeight = (1+table.getRowCount()+pady) * height;
//HERE I SET WIDTHS AND HEIGHTS
table.setRowHeight(height);
table.setMinimumSize(new Dimension(allWidth, allHeight));
scrollPane.setMinimumSize(new Dimension(allWidth, allHeight));
}
private void setTable(JTable jTable) {
this.table = jTable;
}
private JTable getTable() {
return this.table;
}
private class CalendarTableModel extends AbstractTableModel {
private String[] daysData = {"Po", "Út", "St", "Čt", "Pá", "So", "Ne"};
private int[][] values;
public CalendarTableModel() {
values = new int[7][6];
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 7; j++) {
values[j][i] = 7;
}
}
}
@Override
public int getRowCount() {
return 6;
}
@Override
public int getColumnCount() {
return 7;
}
@Override
public String getColumnName(int column) {
return daysData[column];
}
@Override
public Object getValueAt(int row, int column) {
return this.values[column][row];
}
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
}
}
import java.awt.*;
导入javax.swing.*;
导入javax.swing.table.*;
公共班机{
公共静态void main(字符串[]args){
新建Main().start();
}
私有void start(){
JFrame f=新的JFrame();
f、 setLayout(新的GridBagLayout());
GridBagConstraints gbc=新的GridBagConstraints();
initTable();
试一试{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(ClassNotFoundException |实例化Exception | IllegalacessException |不受支持的ookandfeelException e){
}
JPanel calendar=新的JPanel();
setLayout(新的GridBagLayout());
calendar.setboorder(BorderFactory.createTitledBorder(“日历”));
gbc.fill=GridBagConstraints.NONE;
gbc.gridx=0;
gbc.gridy=0;
gbc.weighty=0;
gbc.weightx=0;
日历.添加(滚动窗格,gbc);
f、 添加(日历,gbc);
f、 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f、 setVisible(真);
}
JTable表;
JScrollPane滚动窗格;
日历表模型;
私有void initTable(){
可设置(新JTable());
getTable().setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
getTable().setAutoscrolls(false);
getTable().getTableHeader().SetResizenGallowed(false);
getTable().getTableHeader().setReorderingAllowed(false);
getTable().setColumnSelectionAllowed(true);
getTable().setRowSelectionLowed(true);
getTable().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
tableModel=new CalendarTableModel();//我的类从AbstractTableModel扩展而来
getTable().setModel(tableModel);
scrollPane=新的JScrollPane(表格,JScrollPane.VERTICAL\u SCROLLBAR\u NEVER,JScrollPane.HORIZONTAL\u SCROLLBAR\u NEVER);
滚动窗格。设置自动滚动(false);
//获取维度
整数宽度=0;
整数高度=0;
int-allWidth,allHeight;
int-padx=2,pady=2;
for(int col=0;col
您可以选择购买这一款
借
f.pack()代码>
-
table.getColumnModel().getColumn(col).setPreferredWidth(width);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
jTable1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF ); for (int column = 0; column < jTable1.getColumnCount(); column++){ TableColumn tableColumn = jTable1.getColumnModel().getColumn(column); int preferredWidth = tableColumn.getMinWidth(); int maxWidth = 0; TableCellRenderer rend = jTable1.getTableHeader().getDefaultRenderer(); TableCellRenderer rendCol = tableColumn.getHeaderRenderer(); if (rendCol == null) rendCol = rend; Component header = rendCol.getTableCellRendererComponent(jTable1, tableColumn.getHeaderValue(), false, false, 0, column); maxWidth = header.getPreferredSize().width; System.out.println("maxWidth :"+maxWidth); for (int row = 0; row < jTable1.getRowCount(); row++){ TableCellRenderer cellRenderer = jTable1.getCellRenderer(row, column); Component c = jTable1.prepareRenderer(cellRenderer, row, column); int width = c.getPreferredSize().width + jTable1.getIntercellSpacing().width; preferredWidth = Math.max(preferredWidth, width); System.out.println("preferredWidth :"+preferredWidth); System.out.println("Width :"+width); // We've exceeded the maximum width, no need to check other rows if (preferredWidth <= maxWidth){ preferredWidth = maxWidth; break; } } tableColumn.setPreferredWidth(preferredWidth); }