Question

所以，我现在能够将图像加载到JTable的单元格中，但由于某种原因，图形都向右移动了一个像素，这让我可以看到JTable的背景。有任何想法吗？对不起，如果我的格式化了;仍然没有完全习惯这个标记。

public static void main(String[] args) {  

  final int rows = 16;  
  final int columns = 16;  
  final int dimTile = 32;

  JFrame frame = new JFrame("test");  
  JTable table = new JTable(rows, columns);  
  table.setIntercellSpacing(new Dimension(0, 0));  
  table.setShowGrid(false);
  table.setBackground(Color.cyan);  
  table.setTableHeader(null);  
  table.setRowHeight(dimTile);  
  table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);  
  table.setPreferredSize(new Dimension(rows * dimTile, columns * dimTile));  

  Tile tile = new Tile(0);  
  for(int i = 0; i < rows; i++) {  
     for(int j = 0; j < columns; j++) {  
        table.getColumnModel().getColumn(j).setCellRenderer(new MyRenderer());  
        table.setValueAy(tile, i, j);  
     }  
  }  

  JScrollPane scrollPane = new JScrollPane(table, ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);  
scrollPane.setBorder(BorderFactory.createEmptyBorder());  

  frame.getContentPane().add(scrollPane);  
  frame.setSize(512, 512);  
  frame.setVisible(true);  
  int adjustedSizeX = frame.getInsets().left + frame.getInsets().right + 512;  
  int adjustedSizeY = frame.getInsets().top + frame.getInsets().bottom + 512;  
  frame.setSize(adjustedSizeX, adjustedSizeY);  
  frame.pack();  

  ...  
}  


public class MyRenderer extends DefaultTableCellRenderer {  
  @Override  
  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {  
     super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);  

      Tile tile = (Tile) value;  
      setIcon(tile.getIcon());  
      return this;  
   }  
}  


public class Tile {  
  ImageIcon icon;  

  public Tile(int graphic) {  
     icon = new ImageIcon(PATH/TO/"...test.png");  
  }  

  public ImageIcon getIcon() {  
     return icon;  
  }  
}

Answer 1

不完全确定“一个像素关闭”是什么意思 - 但是在没有任何视觉假象的情况下实现零单元间距，您必须将边距归零并关闭网格线：

table.setIntercellSpacing(new Dimension(0, 0)); 
table.setShowGrid(false)

修改

好的，仔细观察，您的代码有几个问题

你间接而不是直接进行列大小调整（另一个很好的例子，为什么永远不会做一个component.setPreferredSize： - ）

渲染器的边框需要一些尺寸

修复第一个，配置每个列的宽度，表格布局将自动配置其自身

final int rows = 16; final int columns = 16; Tile tile = new Tile(0); int tileHeight = tile.getIcon().getIconHeight(); int tileWidth = tile.getIcon().getIconWidth(); JTable table = new JTable(rows, columns); // remove all margin table.setIntercellSpacing(new Dimension(0, 0)); table.setShowGrid(false); table.setTableHeader(null); // set the rowHeight table.setRowHeight(tileHeight); // turn off auto-resize table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); // configure each column with renderer and prefWidth for (int j = 0; j < columns; j++) { TableColumn column = table.getColumnModel().getColumn(j); column.setCellRenderer(new MyRenderer()); column.setPreferredWidth(tileWidth); }

表示第二个，每个调用中的边框为空：

public static class MyRenderer extends DefaultTableCellRenderer { @Override public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); setBorder(null); Tile tile = (Tile) value; setIcon(tile.getIcon()); return this; } }

JTable单元格中的图像偏离一个像素？

1 个答案: