9

当小部件没有焦点时，我试图在 Mac OS X 上的 Tkinter Text 小部件中更改所选文本的默认背景颜色。默认的未聚焦选择颜色为灰色。经过数小时的搜索，我无法找到一个开箱即用的解决方案来做到这一点。这是我尝试过的：

  • 当小部件未聚焦时，使用selectbackground选项更改选择颜色不会更改选择颜色。例如，它保持灰色。
  • 也没有Text.tag_configure("sel", background=...)
  • ttk.Style.map与状态一起使用"!focus"适用于 Entry 小部件（和其他小部件），但不适用于 Text 小部件。

所以我不得不自己动手（见下文）。有一个更好的方法吗？

import Tkinter as tk

# Replace 'tag_out' with 'tag_in'
def replace_tag(widget, tag_out, tag_in):
    ranges = widget.tag_ranges(tag_out)
    widget.tag_remove(tag_out, ranges[0], ranges[1])
    widget.tag_add(tag_in, ranges[0], ranges[1])

def focusin(e):
    replace_tag(e.widget, "sel_focusout", "sel")

def focusout(e):
    replace_tag(e.widget, "sel", "sel_focusout")


root = tk.Tk()

# Create a Text widget with a red selected text background
text = tk.Text(root, selectbackground="red")
text.pack()

# Add some text, and select it
text.insert("1.0", "Hello, world!")
text.tag_add("sel", "1.0", "end")

# Create a new tag to handle changing the background color on selected text
# when the Text widget loses focus
text.tag_configure("sel_focusout", background="green")
replace_tag(text, "sel", "sel_focusout")

# Bind the events to make this magic happen
text.bind("<FocusIn>", focusin)
text.bind("<FocusOut>", focusout)


# Create an Entry widget to easily test the focus behavior
entry = tk.Entry(root)
entry.pack()

entry.insert("0", "Focus me!")

root.mainloop()
4

2 回答 2

14

挖掘 Tk 源代码让我找到答案！该inactiveselectbackground选项设置颜色。

import Tkinter as tk

root = tk.Tk()

# Create a Text widget with a red selected text background
# And green selected text background when not focused
text = tk.Text(root, selectbackground="red", inactiveselectbackground="green")
text.pack()

# Add some text, and select it
text.insert("1.0", "Hello, world!")
text.tag_add("sel", "1.0", "end")

# Create an Entry widget to easily test the focus behavior
entry = tk.Entry(root)
entry.pack()

entry.insert("0", "Focus me!")

root.mainloop()
于 2012-03-04T21:00:01.143 回答
0

.tag_lower()您可以使用和调整标签的优先级.tag_raise()

于 2022-01-31T04:18:25.847 回答