tkinter 列表框选定样式为透明

发布于 2025-01-10 12:05:16 字数 1285 浏览 0 评论 0原文

我有一个包含动态 int 值的 tkinter Listbox，例如 [1,2,3,4,5]。我已经调整了我的代码以使其更简单。

self.edt_shots = ttk.Listbox(
    self,
    height=7,
    exportselection=False,
    selectforeground="purple",
    activestyle=UNDERLINE,
    #selectbackground="white",  # TRANSPARENT needed here?
)
self.edt_shots.grid(row=3, column=3, rowspan=5)

我对每个项目的背景做了一些条件格式化。例如，所有偶数值为红色，所有奇数值为绿色。

列表框颜色为[red,green, red, green, red]。效果很好。

lst=[1,2,3,4,5]
for i, name in enumerate(lst):
   self.edt_shots.insert(i, str(name))
   # conditional formatting
   self.edt_shots.itemconfig(
    i,
    bg="green"
    if i%2 == 1
    else "red"
  )
self.edt_shots.bind("<<ListboxSelect>>", self.on_edt_shots_change)

但我也在选择项目。我想注意当我通过将前景设置为紫色来选择项目时。

还是不错的。

但这也会将背景更改为蓝色，因此它会覆盖我不想要的条件格式的背景。

def on_edt_shots_change(self, event):
    """handle item selected event"""
    if len(self.edt_shots.curselection()) <= 0:
        return
    index = self.edt_shots.curselection()[0] + 1

    self.edt_shots.select_clear(0, "end")
    self.edt_shots.selection_set(index)
    self.edt_shots.see(index)
    self.edt_shots.activate(index)
    self.edt_shots.selection_anchor(index)

原文

I have a tkinter Listbox containing dynamic int valuesfor example [1,2,3,4,5]. I have adapted my code to make it simpler.

self.edt_shots = ttk.Listbox(
    self,
    height=7,
    exportselection=False,
    selectforeground="purple",
    activestyle=UNDERLINE,
    #selectbackground="white",  # TRANSPARENT needed here?
)
self.edt_shots.grid(row=3, column=3, rowspan=5)

I do some conditional formatting on the background of each item.
So for example all even values would be red and all odd values would be green.

The listbox colors would be [red,green, red, green, red]. That works well.

lst=[1,2,3,4,5]
for i, name in enumerate(lst):
   self.edt_shots.insert(i, str(name))
   # conditional formatting
   self.edt_shots.itemconfig(
    i,
    bg="green"
    if i%2 == 1
    else "red"
  )
self.edt_shots.bind("<<ListboxSelect>>", self.on_edt_shots_change)

But I am also selecting items. I want to notice when I select items by setting the foreground to purple.

Still good.

But that also changes the background to Blue so it overwrites the background from my conditional formatting which I don't want.

def on_edt_shots_change(self, event):
    """handle item selected event"""
    if len(self.edt_shots.curselection()) <= 0:
        return
    index = self.edt_shots.curselection()[0] + 1

    self.edt_shots.select_clear(0, "end")
    self.edt_shots.selection_set(index)
    self.edt_shots.see(index)
    self.edt_shots.activate(index)
    self.edt_shots.selection_anchor(index)

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梦里°也失望 2025-01-17 12:05:16

只需在 for 循环中设置 bg 时也设置 selectbackground 即可：

lst = [1, 2, 3, 4, 5]
for i, name in enumerate(lst):
   self.edt_shots.insert(i, str(name))
   # conditional formatting
   bg = "green" if i%2 == 1 else "red"
   self.edt_shots.itemconfig(i, bg=bg, selectbackground=bg)

Just set the selectbackground as well when setting the bg in the for loop:

lst = [1, 2, 3, 4, 5]
for i, name in enumerate(lst):
   self.edt_shots.insert(i, str(name))
   # conditional formatting
   bg = "green" if i%2 == 1 else "red"
   self.edt_shots.itemconfig(i, bg=bg, selectbackground=bg)

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