java 如何更改 jface 表的背景选择颜色
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How do I change the background selection color for a jface table
提问by ks.
In a elipse-rcp application I am setting the background color for a row in a jface table but I don't want the selection to change this color. I want to be able to specify the color change for a selected row.
在 elipse-rcp 应用程序中，我正在为 jface 表中的一行设置背景颜色，但我不希望选择更改此颜色。我希望能够为所选行指定颜色更改。
回答by VonC
According to this thread, for JFace Viewers(ListViewer, Table, Tree) by means of using EraseItemand MeasureItemevents
根据这个线程， for JFace Viewers( ListViewer, Table, Tree) 通过使用EraseItem和MeasureItem事件
General principle detailed in the article "Custom Drawing Table and Tree Items"
文章“自定义绘图表和树项”中详述的一般原则
SWT.EraseItem: allows a client to custom draw a cell's background and/or selection, and to influence whether the cell's foreground should be drawn
SWT.EraseItem: 允许客户端自定义绘制单元格的背景和/或选择，并影响是否应绘制单元格的前景
回答by ks.
table.addListener(SWT.EraseItem, new Listener() {
public void handleEvent(Event event) {
event.detail &= ~SWT.HOT;
if ((event.detail & SWT.SELECTED) == 0) return; /// item not selected
Table table =(Table)event.widget;
TableItem item =(TableItem)event.item;
int clientWidth = table.getClientArea().width;
GC gc = event.gc;
Color oldForeground = gc.getForeground();
Color oldBackground = gc.getBackground();
gc.setBackground(colorBackground);
gc.setForeground(colorForeground);
gc.fillRectangle(0, event.y, clientWidth, event.height);
gc.setForeground(oldForeground);
gc.setBackground(oldBackground);
event.detail &= ~SWT.SELECTED;
}
});
