设置为使用标签加粗所选文本 [英] Set to bold the selected text using tags
问题描述
我一直在努力制作一个简单的文本编辑器,并且一直在尝试使用标签.我已经能够使用标签创建理由.现在我要添加一个粗体选项.
I have been working trying to make a simple text editor, and have been experimenting with tags. I have been able to create justifying using tags. Now I'm adding a bold option.
我的问题是我找不到很多使用 "sel"
标签的例子,这个标签用于当前选择.
My problem is that I can't find many examples of using the "sel"
tag, a tag used on current selection.
每当我使用 SEL
标签时,文本只有在突出显示时才会显示为粗体,当它不突出显示时,它会恢复为旧的细字体.
Whenever I use the SEL
tag, the text is only bold as long as it is highlighted, when it becomes un-highlighted, it reverts back to its old skinny font.
这是我代码的一小部分:
This is a small portion of my code:
def Bold(self, body, Just, Line, selected font):
bold font = tkFont.Font(family=selectedfont, weight="bold")
selected font = boldfont
body.tag_config("sel",font=selectedfont)
body.tag_add("sel", 1.0,END)
当Bold
按钮被按下时,前一个函数被调用.现在,我将 body.tag_add("sel", 1.0, END)
从 1.0
设置为 END
,因为我没有知道如何获取选定的域.我试过<<
,但是试了很久还是没有用.
When the Bold
button is pressed, the previous function is called.
Right now, I have the body.tag_add("sel", 1.0, END)
set from 1.0
to END
, because I don't know how to get the selected domain.
I've tried <<Selection>>
, but after experimenting for a long time, it hasn't helped me.
推荐答案
你只需要在你的函数内部使用 tag_add()
:
You would only need tag_add()
inside of your function:
import Tkinter as tk
def make_bold():
aText.tag_add("bt", "sel.first", "sel.last")
lord = tk.Tk()
aText = tk.Text(lord, font=("Georgia", "12"))
aText.grid()
aButton = tk.Button(lord, text="bold", command=make_bold)
aButton.grid()
aText.tag_config("bt", font=("Georgia", "12", "bold"))
lord.mainloop()
我刚刚偶然发现了一个很有教育意义的示例,正是 Bryan Oakley,
在完全不相关的搜索中!
I just happened across a rather educational example by none other than Bryan Oakley,
on a completely unrelated search!
以下是更动态的替代方案的快速示例:
Here is a quick example of the more dynamic alternative:
import Tkinter as tk
import tkFont
def make_bold():
current_tags = aText.tag_names("sel.first")
if "bt" in current_tags:
aText.tag_remove("bt", "sel.first", "sel.last")
else:
aText.tag_add("bt", "sel.first", "sel.last")
lord = tk.Tk()
aText = tk.Text(lord, font=("Georgia", "12"))
aText.grid()
aButton = tk.Button(lord, text="bold", command=make_bold)
aButton.grid()
bold_font = tkFont.Font(aText, aText.cget("font"))
bold_font.configure(weight="bold")
aText.tag_configure("bt", font=bold_font)
lord.mainloop()
这篇关于设置为使用标签加粗所选文本的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!