Java 使用 SWT gridlayout 和 griddata 学习
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Java learn using SWT gridlayout and griddata
提问by Reteras Remus
I understand and can use FormLayout, FormData, FormAttachment but I can't understand how GridLayout, GridData is working. I want to learn using GridLayout and GridData because it's more like a table, it has a structure and doesn't depend on other widgets.
我理解并且可以使用 FormLayout、FormData、FormAttachment，但我无法理解 GridLayout、GridData 是如何工作的。我想学习使用 GridLayout 和 GridData 因为它更像是一个表格，它有一个结构并且不依赖于其他小部件。
I was working as a web developer (front-end, back-end) and I got lost in Java "Grid" structure. How am I supposed to align, move widgets within a cell (horizontal/vertical Aling, hor./vert. Indent)? Like in HTML/CSS: margin, padding, etc. Ex: move a block from left by 100px. (margin-left: 100px), but in Java?
我是一名 Web 开发人员（前端、后端），我迷失在 Java“网格”结构中。我应该如何对齐、移动单元格内的小部件（水平/垂直 Aling、hor./vert. Indent）？就像在 HTML/CSS 中一样：边距、填充等。例如：从左边移动一个块 100 像素。（左边距：100px），但在 Java 中？
When I was working as a web developer, I created a page (here in Java it's view), I know how to organize parents and blocks. Can I compare a Composite to a div, like a block element like in HTML/CSS ?
当我作为 Web 开发人员工作时，我创建了一个页面（这里是 Java 视图），我知道如何组织父级和块。我可以将 Composite 与 div 进行比较，就像 HTML/CSS 中的块元素一样吗？
I need to create the following app:
我需要创建以下应用程序：
Am I need to use 4 composites?
我需要使用 4 个复合材料吗？
回答by Baz
The following article should shed some light on GridLayoutfor you:
以下文章应该GridLayout为您提供一些启示：
To achieve something like the form you have there, you would need something like this:
要实现类似于您在那里的形式的东西，您需要这样的东西：
shell.setLayout(new GridLayout(3, false));
Label title = new Label(shell, SWT.NONE);
title.setText("My first text editor");
GridData data = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
data.horizontalSpan = 3;
title.setLayoutData(data);
Label select = new Label(shell, SWT.NONE);
select.setText("Select a file:");
data = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
select.setLayoutData(data);
Text text = new Text(shell, SWT.BORDER);
data = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
text.setLayoutData(data);
Button button = new Button(shell, SWT.PUSH);
button.setText("Browse...");
data = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
button.setLayoutData(data);
List result = new List(shell, SWT.BORDER);
data = new GridData(SWT.FILL, SWT.FILL, true, true);
data.horizontalSpan = 3;
result.setLayoutData(data);
The GridDataus used to define the behavior of the component within the layout. You can define vertical/horizontal alignment, margins and so on. horizontalSpanis used to tell the layout how many columns the widget will cover.
在GridData我们使用的定义布局中组件的行为。您可以定义垂直/水平对齐方式、边距等。horizontalSpan用于告诉布局小部件将覆盖多少列。
