我用 Python 学习 GTK,但小部件有问题texview
。我想更改/修改缓冲区 ( textview
) 中文本的特定部分。
例如,文本缓冲区:
long_text = "line 1 word 1 word 2 word 3 \n" \
"line 2 [WORD TO REPLACE] \n" \
"line 3 \n"
[WORD TO REPLACE]
我想用a 的值替换部分Gtk.Entry
。我知道如何在缓冲区的末尾添加条目,但我无法从文本本身内部进行替换。
整个代码:
from gi.repository import Gtk
import sys
class MyWindow(Gtk.ApplicationWindow):
def __init__(self, app):
Gtk.Window.__init__(self, title="TextView Example", application=app)
self.set_default_size(300, 450)
# a scrollbar for the child widget (that is going to be the textview)
scrolled_window = Gtk.ScrolledWindow()
scrolled_window.set_border_width(5)
# we scroll only if needed
scrolled_window.set_policy(
Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
scrolled_window.set_min_content_height(400)
scrolled_window.set_min_content_width(400)
# a text buffer (stores text)
self.text_buffer = Gtk.TextBuffer()
#Test texte
long_text = "line 1 word 1 word 2 word 3 \n" \
"line 2 <WORD TO REPLACE> \n" \
"line 3 \n"
# a textview (displays the buffer)
self.textview = Gtk.TextView(buffer=self.text_buffer)
# wrap the text, if needed, breaking lines in between words
self.textview.set_wrap_mode(Gtk.WrapMode.WORD)
self.text_buffer = self.textview.get_buffer()
self.text_buffer.insert_at_cursor(long_text)
# textview is scrolled
scrolled_window.add(self.textview)
self.entry=Gtk.Entry()
self.entry.set_text("Entry")
btnUpdate = Gtk.Button(label="Update")
btnUpdate.connect("clicked", self.update_textview)
grid = Gtk.Grid()
grid.attach(self.entry,0,1,1,1)
grid.attach(btnUpdate,0,2,1,1)
grid.attach(scrolled_window,0,3,1,1)
self.add(grid)
def update_textview(self, widget):
self.text_buffer.insert_at_cursor(self.entry.get_text() + '\n')
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
欢迎任何想法。谢谢。