有没有可能修改文本swt小部件包装单词的方式？ [英] Is it possible to modify how Text swt widget wrap word?

问题描述

开发平台是Fedora上的Eclipse RCP 3.4（它使用的是Gtk本地组件）。我需要避免单词换行。

即：Hello World显示为案例N°1，但我需要案例N°2。

  1 |你好| 2 | Hello Wor | 
 | World | | ld | 
  

有没有简单的解决方案？

我已经看到swt文本句柄是用 OS.GTK_WRAP_WORD_CHAR wrap模式构建的。我想用像 OS.GTK_WRAP_WORD 或 OS.GTK_WRAP_NONE 这样的常量来测试行为，但我不知道如何履行这个奇迹？是否有可能以编程方式修改平台特定的配置？

编辑1 - 我的一位同事有一个解决方案：

  import org.eclipse.swt.SWT; 
导入org.eclipse.swt.internal.gtk.OS; 
 import org.eclipse.swt.layout。*; 
导入org.eclipse.swt.widgets。*; 
 
 public class SampleGrabExcess {
 public static void main（String [] args）{
 Display display = new Display（）; 
 Shell shell = new Shell（display）; 
 shell.setLayout（new GridLayout（））; 
 shell.setSize（70，70）; 
 
 GridData gridData = new GridData（）; 
文本addressText = new Text（shell，SWT.BORDER | SWT.MULTI）{
 @Override 
 protected void checkSubclass（）{} 
 $ b $ @覆盖
 protected void checkWidget（）{
 OS.gtk_text_view_set_wrap_mode（handle，1）; 
 super.checkWidget（）; 
} 
 
}; 
 gridData = new GridData（）; 
 gridData.horizo​​ntalAlignment = SWT.FILL; 
 gridData.grabExcessHorizo​​ntalSpace = true; 
 gridData.verticalAlignment = SWT.FILL; 
 gridData.grabExcessVerticalSpace = true; 
 addressText.setLayoutData（gridData）; 
 addressText.setText（Hello World。）; 
 
 shell.open（）; $！
 $ b while（！shell.isDisposed（））{
 if（！display.readAndDispatch（））{
 display.sleep（）; 
} 
} 
} 
} 
  

结果是预期的。我正在寻找来自 http://dev.eclipse.org 的解决方案。

解决方案

不，我不明白你能做到这一点。

您可以将模式设置为OS.GTK_WRAP_WORD和OS.GTK_WRAP_NONE不会让您获得所需的行为，因为第一个单词在单词之间断开，就像OS.GTK_WRAP_WORD_CHAR一样，第二个单词也不会断行。您正在寻找的模式是GTK_WRAP_CHAR。但是，一个常量如OS.GTK_WRAP_CHAR甚至没有在 org.eclipse.swt.internal.gtk.OS 表明SWT的创造者可能反对允许这种行为，即使在理论上也是如此。

The development platform is an Eclipse RCP 3.4 on Fedora (It's using Gtk native component). I need to avoid word wrapping.

i.e.: "Hello World" is displayed as case N°1 but I need the case N°2.

1|Hello    |    2|Hello Wor|
 |World    |     |ld       |

Is there a simple solution ?

I've seen that swt Text handle is build with OS.GTK_WRAP_WORD_CHAR wrap mode. I would like to test the behaviour with constant like OS.GTK_WRAP_WORD or OS.GTK_WRAP_NONE but I don't know how to perform this miracle ? Is it possible to modify platform specific configuration programmatically ?

EDIT 1 - There is a solution from one of my colleagues:

import org.eclipse.swt.SWT;
import org.eclipse.swt.internal.gtk.OS;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class SampleGrabExcess {
   public static void main(String[] args) {
      Display display = new Display();
      Shell shell = new Shell(display);
      shell.setLayout(new GridLayout());
      shell.setSize(70, 70);

      GridData gridData = new GridData();
      Text addressText = new Text(shell, SWT.BORDER | SWT.MULTI) {
         @Override
         protected void checkSubclass() {}

         @Override
         protected void checkWidget() {
            OS.gtk_text_view_set_wrap_mode(handle, 1);
            super.checkWidget();
         }

      };
      gridData = new GridData();
      gridData.horizontalAlignment = SWT.FILL;
      gridData.grabExcessHorizontalSpace = true;
      gridData.verticalAlignment = SWT.FILL;
      gridData.grabExcessVerticalSpace = true;
      addressText.setLayoutData(gridData);
      addressText.setText("Hello World.");

      shell.open();

      while (!shell.isDisposed()) {
         if (!display.readAndDispatch()) {
            display.sleep();
         }
      }
   }
}

The result is that expected. I'm looking for a solution from http://dev.eclipse.org.

解决方案

No, I don't see how you could do that.

Btw, even if you could, setting the mode to OS.GTK_WRAP_WORD and OS.GTK_WRAP_NONE wouldn't get you the desired behaviour, since the first one breaks line in between words, just like OS.GTK_WRAP_WORD_CHAR, and the second one doesn't break lines at all. The mode you're looking for is GTK_WRAP_CHAR. However, the fact that a constant such as OS.GTK_WRAP_CHAR isn't even declared in org.eclipse.swt.internal.gtk.OS indicates that the creators of SWT were probably against allowing such behaviour, even in theory.

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