如何更新索引以滚动到文本框小部件中找到的每个单词？

Question

我需要找到每个匹配的单词，然后单击按钮在文本框中添加滚动条。此函数仅查找第一个匹配的单词。如何将更新后的索引提供给绑定到按钮的函数？

def find(idx='1.0'):
    text.tag_remove('found', idx, END)
    s = edit.get()
    if s:
        idx = text.search(s, idx, nocase=1,
                          stopindex=END)
        if not idx:
            return None
  
        foundidx = '%s+%dc' % (idx, len(s))

        text.tag_add('found', idx, foundidx)
        text.see(foundidx)

        text.tag_config('found', foreground='red')
        edit.focus_set()

    return foundidx

Answer 1

为此，您需要一个 Text 小部件和一个通过小部件显示示例文本的根。我是这样做的：

import tkinter as tk

root = tk.Tk()

text = tk.Text(root)
text.pack()
text.insert('1.0','''
Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren,
no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet,
consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum.
Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.

Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren,
no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet,
consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum.
Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.

Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren,
no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet,
consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum.
Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.

Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren,
no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet,
consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat,
sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum.
Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.

text by: https://www.loremipsum.de/
''')

之后我按照 link out of the comments 的说明进行操作。并通过保存位置和索引来扩展它。

countVar = tk.StringVar()
idxVar = tk.StringVar()
posis = []
def search():
    try:
        if idxVar.get():
            new_idx = float(idxVar.get()+countVar.get())
            pos = text.search('sed', new_idx, 'end', count=countVar)
            text.tag_add('search', pos, '%s + %sc' % (pos, countVar.get()))
            text.tag_configure('search', background='green')
            idxVar.set(pos)
            posis.append(pos)
        else:
            pos = text.search('sed', '1.0', 'end', count=countVar)
            text.tag_add('search', pos, '%s + %sc' % (pos, countVar.get()))
            text.tag_configure('search', background='green')
            idxVar.set(pos)
            posis.append(pos)
    except:
        idxVar.set('1.0')

button = tk.Button(root,text='search',command=search)
button.pack()

至少我用了Text.see方法跳转到了我posis列表的点数：

show = tk.IntVar()
show.set(0)

def see():
    if show.get() <= len(posis)-1:
        pos = show.get()
        text.see(posis[show.get()])
        show.set(pos+1)
    else:
        show.set(0)
        

button2= tk.Button(root,text='see', command=see)
button2.pack()

root.mainloop()

我知道这段代码可以改进很多，但它应该显示原理并且我曾经编写过不言自明的代码。但如果有未解决的问题，请告诉我，我会改进这个答案。

如何更新索引以滚动到文本框小部件中找到的每个单词？

how to update the index to scroll to each found word in a text box widget?

python

tkinter

tkinter-text