text - 如何更改 wxPython TextCtrl 中特定单词的颜色？

Question

我创建了一个仅显示报价的 gui。如何将下面引用中所有单词“你”的颜色更改为蓝色？我试过SetForegroundColour但它将整个文本变为蓝色。

这是代码：

import wx

string='''"Have more than thou showest,

Speak less than thou knowest,

Lend less than thou owest,

Ride more than thou goest,

Learn more than thou trowest,

Set less than thou throwest."

—The Fool in King Lear'''

class Quote(wx.Frame):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.InitUI()

    def InitUI(self):
        panel=wx.Panel(self)

        self.text=wx.TextCtrl(panel, pos=(20,20), size=(250,220),
            style=wx.TE_MULTILINE|wx.TE_READONLY)
        self.text.AppendText(string)
        self.text.SetForegroundColour("blue")

        self.SetSize(300,300)
        self.Centre()
        self.Show(True)

def main():
    app=wx.App()
    Quote(None)
    app.MainLoop()

if __name__ == '__main__':
    main()

这是它的样子

Answer 1

您可能需要阅读RichTextCtrl https://wxpython.org/Phoenix/docs/html/richtextctrl_overview.html

只需使用TextCtrl您就可以在事后设置样式属性（感谢 Robin 的评论）或2
将样式属性应用于文本。

事后设置样式属性re用于事先查找所有出现的单词：

import wx
import re

string='''"Have more than thou showest,

Speak less than thou knowest,

Lend less than thou owest,

Ride more than thou goest,

Learn more than thou trowest,

Set less than thou throwest."

-The Fool in King Lear'''

class Quote(wx.Frame):
    def __init__(self, *args, **kwargs):
        wx.Frame.__init__(self, None, -1)
        self.InitUI()

    def InitUI(self):
        panel=wx.Panel(self)
        word = 'thou'
        word_colour = wx.TextAttr(wx.BLUE)
        word_occurs = self.find_str(word,string)
        self.text=wx.TextCtrl(panel, pos=(20,20), size=(250,220),
            style=wx.TE_MULTILINE|wx.TE_READONLY)
        self.text.AppendText(string)
        for i in word_occurs:
            #SetStyle(start pos, end pos, style)
            self.text.SetStyle(i,i+len(word),word_colour)
        self.SetSize((300,300))
        self.Centre()
        self.Show(True)

    def find_str(self,sub,sent): #return positions of the word
        return [x.start() for x in re.finditer(sub,sent)]

def main():
    app=wx.App()
    Quote()
    app.MainLoop()

if __name__ == '__main__':
    main()

这样做的冗长的方式，在你去的时候应用样式属性：

import wx

string1='''"Have more than'''
string2='''showest,

Speak less than'''
string3='''knowest,

Lend less than'''
string4='''owest,

Ride more than'''
string5='''goest,

Learn more than'''
string6='''trowest,

Set less than'''
string7='''throwest."

-The Fool in King Lear'''

class Quote(wx.Frame):
    def __init__(self, *args, **kwargs):
        wx.Frame.__init__(self, None, -1)
        self.InitUI()

    def InitUI(self):
        panel=wx.Panel(self)

        self.text=wx.TextCtrl(panel, pos=(20,20), size=(250,220),
            style=wx.TE_MULTILINE|wx.TE_READONLY)
        self.text.AppendText(string1)
        self.text.SetDefaultStyle(wx.TextAttr(wx.BLUE))
        self.text.AppendText(" thou ")
        self.text.SetDefaultStyle(wx.TextAttr(wx.NullColour))
        self.text.AppendText(string2)
        self.text.SetDefaultStyle(wx.TextAttr(wx.BLUE))
        self.text.AppendText(" thou ")
        self.text.SetDefaultStyle(wx.TextAttr(wx.NullColour))
        self.text.AppendText(string3)
        self.text.SetDefaultStyle(wx.TextAttr(wx.BLUE))
        self.text.AppendText(" thou ")
        self.text.SetDefaultStyle(wx.TextAttr(wx.NullColour))
        self.text.AppendText(string4)
        self.text.SetDefaultStyle(wx.TextAttr(wx.BLUE))
        self.text.AppendText(" thou ")
        self.text.SetDefaultStyle(wx.TextAttr(wx.NullColour))
        self.text.AppendText(string5)
        self.text.SetDefaultStyle(wx.TextAttr(wx.BLUE))
        self.text.AppendText(" thou ")
        self.text.SetDefaultStyle(wx.TextAttr(wx.NullColour))
        self.text.AppendText(string6)
        self.text.SetDefaultStyle(wx.TextAttr(wx.BLUE))
        self.text.AppendText(" thou ")
        self.text.SetDefaultStyle(wx.TextAttr(wx.NullColour))
        self.text.AppendText(string7)

        self.SetSize((300,300))
        self.Centre()
        self.Show(True)

def main():
    app=wx.App()
    Quote()
    app.MainLoop()

if __name__ == '__main__':
    main()