问题描述
我正在尝试为 Kivy 按钮添加边框，但它没有按预期工作.对于标签，我的实现似乎没问题，但对于按钮，它会覆盖/清除按钮的标准外观.
如何在不改变正常行为的情况下在按钮上方绘制边框?我想像 ButtonBehavior 一样实现它，这样我就可以使用画布为每个 Kivy 对象添加边框.我称之为 BorderBehavior.
样式虚线，点线仅适用于线宽 1，因为 Kivy 中存在错误(请参阅
好的，我找到了解决方法.这是一个命名冲突.
在控制台日志中，我看到在按钮的 BorderImage 中解包边框元组时出现问题.当然，这是行不通的，因为我的边界实现方式不同.也许我可以将列表(上、右、下、左)添加到我的边框实现中，这样我就可以保持相同的名称.但我还没有检查过.
在 python 和 kv 中将我的边框的命名更改为边框修复了问题:
类 BorderBehavior(Widget):边框 = ObjectProperty(无)现在看起来我想要它:
好的，现在我将检查它是否也适用于其他类(例如 Scatter、Widget、...).如果这行得通，我正在向 Kivy 发出拉取请求.
I'm trying to add a border to Kivy Buttons but it doesn't work as expected. For labels my implementation seems to be OK but for buttons it overrides/clears the standard look of the button.
How can I draw the border above the button with-out changing normal behavior? I'd like to implement it like the ButtonBehavior so I can add a border to every Kivy object with a canvas. I've called it BorderBehavior.
Styling dashed, dotted works only for line width of 1 because there is a bug in Kivy (see https://github.com/kivy/kivy/issues/2037) (Need to figure out what's wrong here later.)
I know that drawing a border is possible with a BorderImage but I'd like to add simple borders with-out an image.
Here is how it looks at the moment:
You can find my source code here (the labels can be dragged just for testing purposes to see that the border is always correctly positioned):
https://gist.github.com/AWolf81/c6796dc2049d9872b2df
OK, I've found the fix. It was a naming conflict.
In the console log I saw that there is a problem at unpacking the border tuple in BorderImage of the button. Of course, that's not working because my border is implemented differently. Maybe I can add the list (top, right, bottom, left) to my border implementation so I can keep the same name. But I haven't checked that yet.
Changing the naming of my border to borders in python and in kv fixed the problem:
class BorderBehavior(Widget):
borders = ObjectProperty(None)
Now it looks like I want it:
OK, now I'll check if it's working for other classes too (e.g. Scatter, Widget,...). If that's working I'm doing a pull request to Kivy.
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