Xul 滚动框按钮消失
如果运行这个简单的 Xul 示例,您可以看到当您使用 Tab 从最后一个 (3°) 按钮滚动到第一个按钮时,中间的按钮消失。知道为什么吗?以及如何修复?
(要运行它,您需要在内容文件夹中放置一个名为“img.png”的 png 图像)
test.xul
<?xml-stylesheet href="chrome://test/content/test.css" type="text/css"?>
<window id="desktop" title="test" width="1280" height="720" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<scrollbox>
<button image="chrome://test/content/img.png" />
<button image="chrome://test/content/img.png" />
<button image="chrome://test/content/img.png" />
</scrollbox>
</window>
测试.css
#desktop {
border-style:solid;
border-color:transparent;
border-width:50px;
}
button {
position: absolute;
-moz-appearance: none;
border: none;
background: url(""); /* nothing */
width: 128px;
height: 128px;
z-index: 1;
}
button image {
width: 64px;
height: 64px;
}
button:focus image {
width: 128px;
height: 128px;
}
scrollbox {
background-color: #555555;
}
If you run this simple Xul example, you can see that when you scroll from the last (3°) button to the first, using tab, the middle button disappear. Any idea why? And how to fix?
(to run it you'll need to put an png image named "img.png" at content folder)
test.xul
<?xml-stylesheet href="chrome://test/content/test.css" type="text/css"?>
<window id="desktop" title="test" width="1280" height="720" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<scrollbox>
<button image="chrome://test/content/img.png" />
<button image="chrome://test/content/img.png" />
<button image="chrome://test/content/img.png" />
</scrollbox>
</window>
test.css
#desktop {
border-style:solid;
border-color:transparent;
border-width:50px;
}
button {
position: absolute;
-moz-appearance: none;
border: none;
background: url(""); /* nothing */
width: 128px;
height: 128px;
z-index: 1;
}
button image {
width: 64px;
height: 64px;
}
button:focus image {
width: 128px;
height: 128px;
}
scrollbox {
background-color: #555555;
}
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解决了将滚动框插入框内,并将滚动框的背景颜色设置为框的问题。
Solved inserting the scrollbox inside a box, and setting the scroll's background color to the box.