Java 当鼠标输入时,如何更改一行中所有JTable列的颜色?
当鼠标在表格中输入一行时,我希望该行中的每一列颜色都变为蓝色 我已经这样做了,它改变了,但它只有在我按下鼠标时才会改变,而不是当我的鼠标进入它时Java 当鼠标输入时,如何更改一行中所有JTable列的颜色?,java,swing,user-interface,jtable,Java,Swing,User Interface,Jtable,当鼠标在表格中输入一行时,我希望该行中的每一列颜色都变为蓝色 我已经这样做了,它改变了,但它只有在我按下鼠标时才会改变,而不是当我的鼠标进入它时 private void changeColorTableCell(JTable tbl, int index) { tbl.getColumnModel().getColumn(index).setCellRenderer(new DefaultTableCellRenderer(){ @Override p
private void changeColorTableCell(JTable tbl, int index) {
tbl.getColumnModel().getColumn(index).setCellRenderer(new DefaultTableCellRenderer(){
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
final Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
c.setBackground(Color.BLUE);
return c;
}
});
}
private void tabelPesananMouseEntered(java.awt.event.MouseEvent evt) {
int count = tabelPesanan.getColumnModel().getColumnCount();
for(int i = 0; i < count; i++) {
changeColorTableCell(tabelPesanan, i);
}
}
private void changeColorTableCell(JTable tbl,int index){
tbl.getColumnModel().getColumn(index).setCellRenderer(新的DefaultTableCellRenderer()){
@凌驾
公共组件GetTableCellRenderComponent(JTable表、对象值、布尔isSelected、布尔hasFocus、int行、int列){
final Component c=super.getTableCellRenderComponent(表、值、isSelected、hasFocus、行、列);
c、 挫折背景(颜色:蓝色);
返回c;
}
});
}
私有void选项卡elpesanamouseintered(java.awt.event.MouseEvent evt){
int count=tabelPesanan.getColumnModel().getColumnCount();
for(int i=0;i
当鼠标输入时,如何更改行中所有JTable
列的颜色?getColumn(index)。setCellRenderer(…)
将无法工作。如果要更改整行的颜色,不能只更改一列的渲染器
虽然可以设置默认渲染器,也可以设置每列的单元格渲染器,但更好的选择是覆盖,这样,除了背景色之外,任何其他渲染器都不会受到影响
private int hoveredRow = -1;
// ...
JTable tabelPesanan = new JTable() {
private static final long serialVersionUID = 1;
@Override
public Component prepareRenderer(TableCellRenderer renderer,
int row,
int column) {
Component component =
super.prepareRenderer(renderer, row, column);
if (row == hoveredRow) {
component.setBackground(Color.BLUE);
} else if (isCellSelected(row, column)) {
component.setBackground(getSelectionBackground());
} else {
component.setBackground(getBackground());
}
return component;
}
};
MouseInputListener hoveredRowUpdater = new MouseInputAdapter() {
private void repaintRow(int row) {
if (row >= 0) {
Rectangle bounds = tabelPesanan.getCellRect(row, 0, true);
int width = tabelPesanan.getWidth();
tabelPesanan.repaint(0, bounds.y, width, bounds.height);
}
}
private void updateHoveredRowFrom(MouseEvent event) {
int oldHoveredRow = hoveredRow;
hoveredRow = tabelPesanan.rowAtPoint(event.getPoint());
repaintRow(oldHoveredRow);
repaintRow(hoveredRow);
}
@Override
public void mouseEntered(MouseEvent event) {
updateHoveredRowFrom(event);
}
@Override
public void mouseExited(MouseEvent event) {
updateHoveredRowFrom(event);
}
@Override
public void mouseMoved(MouseEvent event) {
updateHoveredRowFrom(event);
}
@Override
public void mouseDragged(MouseEvent event) {
updateHoveredRowFrom(event);
}
};
tabelPesanan.addMouseListener(hoveredRowUpdater);
tabelPesanan.addMouseMotionListener(hoveredRowUpdater);
从代码片段中可以看出,您正在使用GUI生成器。恐怕我帮不了你。啊,谢谢你,伙计,它起作用了,你救了我的命,非常感谢@艾哈迈德夫马