获取SWT视图的大小

问题描述

我正在尝试确定SWT视图的大小，以便可以在插件中正确布置窗口小部件.我正在Java 8的Eclipse Neon上运行.

I am attempting to determine the size of a SWT view so I can layout the widgets correctly in a plugin. I am running on Eclipse Neon with Java 8.

我正在使用的代码如下:

The code I am using follows:

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.part.ViewPart;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;


public class ClockView extends ViewPart {

/**
     * The constructor.
     */
    public ClockView() {
    }

    /**
     * This is a callback that will allow us
     * to create the viewer and initialize it.
     */
    @Override
    public void createPartControl(Composite parent) {
        final RowLayout layout = new RowLayout(SWT.HORIZONTAL);
        layout.center = true;
        layout.justify = true;
        final Point area = parent.getSize();
        final ImmutableList<Integer> clockWidths = ImmutableList.<Integer>of(100, 200, 400);
        layout.marginWidth = (area.x - Iterables.getLast(clockWidths, null)) / 2;
        layout.marginHeight = (area.y - Iterables.getLast(clockWidths, null)) / 2;
        parent.setLayout(layout);
        clockWidths.forEach(width -> {
            ClockWidget c = new ClockWidget(parent, SWT.NONE);
            c.setLayoutData(new RowData(width, width));
        });
    }
    /**
     * Passing the focus request to the viewer's control.
     */
    @Override
    public void setFocus() {
    }

}

我的问题是，我尝试的每个方法都返回0，视图的大小返回0.我已经尝试过scrollable.getClientArea和Composite.getSize.

My problem is that every method I tried returns 0, 0 for the size of the view. I have tried scrollable.getClientArea and Composite.getSize.

如何确定可以使用的区域?

How can I determine the area available to work with?

推荐答案

调用 createPartControl 时，大小尚未确定.

Sizes haven't been determined when createPartControl is called.

设置大小后，将发生Resize事件.

There will be a Resize event when the size is set.

在主 Composite 上使用 getClientArea()获取视图区域的大小.

Use getClientArea() on the main Composite to get the size of the view area.

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