在文本组件上绘制轮廓边框

问题描述

我正在尝试在SWT中的 Text 上绘制边框...
这就是我现在得到的:

I'm trying to draw a border over a Text in SWT...
This is what I got for now:

公共类BorderedText扩展了文本{

public class BorderedText extends Text {

public BorderedText(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {

        @Override
        public void paintControl(PaintEvent e) {
            e.gc.setAntialias(SWT.ON);
            if (isFocusControl()) {
                Color color = new Color(getDisplay(), new RGB(82, 168, 236));
                e.gc.setAlpha(200);
                e.gc.setForeground(color);
                Rectangle rect = new Rectangle(0,0, getClientArea().width-1, getClientArea().height-1);

                Transform t = new Transform(getDisplay());
                e.gc.setTransform(t);

                e.gc.drawRoundRectangle(0, 0, rect.width,  rect.height, 4,4);
            } else {
                e.gc.setForeground(SWTResourceManager.getColor(SWT.COLOR_GRAY));
                Rectangle rect = new Rectangle(0,0, getClientArea().width-1, getClientArea().height-1);

                e.gc.drawRectangle(rect);
            }
        }
    });

当组件获得焦点时，他就是这样

When the component receive focus, he is like this

但是当我打字时，他被搞砸了

But when I type something, he got screwed up

我想念什么?

编辑
我放弃了 Text ，并使用 StyledText

公共类BorderedText扩展了StyledText {

public class BorderedText extends StyledText {

public BorderedText(Composite parent) {
    super(parent, SWT.WRAP);

    setTabStops(new int[] {0});
    addPaintListener(new PaintListener() {

        @Override
        public void paintControl(PaintEvent e) {
            e.gc.setAntialias(SWT.ON);
            if(isFocusControl()){
                e.gc.setForeground(SWTResourceManager.getColor(SWT.COLOR_LIST_SELECTION));
                e.gc.drawRoundRectangle(0, 0, getClientArea().width-1, getClientArea().height-1, 6,6);
            } else {
                e.gc.setForeground(SWTResourceManager.getColor(SWT.COLOR_GRAY));
                e.gc.drawRoundRectangle(0, 0, getClientArea().width-1, getClientArea().height-1, 6,6);
            }
        }
    });

    addFocusListener(new FocusListener() {

        @Override
        public void focusLost(FocusEvent e) {
            redraw();
        }

        @Override
        public void focusGained(FocusEvent e) {
            redraw();
        }
    });

    addControlListener(new ControlListener() {

        @Override
        public void controlResized(ControlEvent e) {
            redraw();
        }

        @Override
        public void controlMoved(ControlEvent e) {
            redraw();
        }
    });

addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            if(e.character == SWT.TAB){
                e.doit = false;
                traverse(SWT.TRAVERSE_TAB_NEXT);
            }
        }
    });
}

@Override
protected void checkSubclass() {
    //
}

@Override
protected void checkWidget() {
    //
}

推荐答案

您有两种可能:

1. 您可以使用SWT.BORDER作为样式参数创建一个新的Text小部件.这样会给您一个漂亮的边框.

1. You can create a new Text widget with SWT.BORDER as a style argument. This would give you a nice looking border.

您可以使用StyledText小部件.StyledText小部件使您可以定义边距.

You can use the StyledText widget. The StyledText widget enables you to define margins.

这篇关于在文本组件上绘制轮廓边框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！