Java - 解释gridbag权重显示像素关系/公式/转换

Question

我一直在玩GridBagLayout，但我似乎无法弄清楚在特定的权重中我将获得多少像素限制条件。

例如，假设我有一个 1000 像素的 contentPane，其中包含三个 JPanel，权重(例如 weighty)为 0.1 , 0.1, 0.8。

我的第一个假设是面板 1 和 2 各为 100 像素，面板 3 为 800。事实证明并非如此。

如何获得与权重相关的确切像素数？

This question问了类似的问题，但答案虽然有帮助，但并没有回答问题。 :-/

Answer 1

没关系，我想我找到了答案here :

When more than one column has a non-zero weight, the excess space is 
distributed among the non-zero weight columns using the weight values. 
In particular, if the excess space is P pixels, and the column weights 
for column^i is weight^i, then column^i gets exactly 
(weight^i * P) / (sum-of-all-column-weights). For example, if column 1 
has weight 1 and column 2 has weight 2 and the excess space is 90 pixels, 
column 1 will get 30 extra pixels and column 2 will get 60 extra pixels. 
Rows with a non-zero weight behave in similar fashion.

显然问题是单元格中添加了额外的空间。