带有内容的背景图像 JFrame

2022-01-24 00:00:00 background-image java swing jframe border-layout

我有一个带有 BorderLayout 的 JFrame，四面都有面板(北、东……).面板中主要有标签和按钮.

I have a JFrame with BorderLayout, there are panels on all sides (North, East ,...). In the panels there are labels and buttons mostly.

现在我希望框架具有背景图像，一些研究告诉我，我必须更改框架的内容窗格.

Now I want the frame to have a background image, some research told me that i had to change the content pane of my frame.

但是，当我尝试这样做时，内容会被置于后台并且不可见.另外，如果调整框架大小，我不知道如何调整图像大小.

When I try this however, the content gets put in the background and isn't visible. Also, I don't know how to resize the image if the frame is resized.

是否有一个简单的解决方法，或者我是否需要重新编写大部分代码?

Is there an easy fix for this or will I have to rework most of my code?

推荐答案

  1. 把带有背景图片的JPanel(或JComponent)放到BorderLayout.CENTER，然后这个JPanel 填充整个 JFrame 区域，其余的 JComponents 放到这个 JPanel

  1. put JPanel (or JComponent) with background Image to the BorderLayout.CENTER, then this JPanel fills whole JFrame area, rest of yout JComponents put to this JPanel

四面八方(北、东……)都有 Jpanel.在Jpanels中主要有Jlabels和Jbuttons.

这些 JComponents 涵盖了 JFrame 的所有可用 Rectangle，然后 Background Image(从我的第一点开始)永远不会将被显示，因为这些 JComponents 是 on_top JFrame 并且也可以隐藏这个 Image，

these JComponents covered all available Rectangle for JFrame, then Background Image (from my 1st point) never will be dispalyed, because these JComponents are on_top JFrame and could be hide this Image as well,

添加 JPanel 和背景图像(从我的第一点开始)，然后用 JPanel#setOpaque(false) 放另一个 JPanel(s);，那么这个JPanel会是透明的，注意JPanel已经默认实现了FlowLayout

add JPanel with Background Image (from my 1st point), then put there another JPanel(s) with JPanel#setOpaque(false);, then this JPanel will be transparent, notice JPanel has implemented by default FlowLayout

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