Hi all,
I'm trying some code snippets with tags in Text.
In example i only hilite line on cursor.insert.
1. first tag removing is only from visible lines
2. second removing from whole buffer
all this using -after command
3. using -bind to <Key> event
3 is unusable for me coz highlighted line is always after cursor if i
move UP and DOWN
2 is better but tag is applied on last line too if i move UP after.
But still better than 3
1 on first i dont want to remove tags from whole widget but after some
timing this way is faster than 2. [ tested on 120kb .py file]
any ideas for improvement and some speedup for this ?
thanks.
##########################################################################
#encoding: utf-8
from tkinter import *
import time
class MyText(Text):
def __init__(self, parent, **kwargs):
super().__init__(parent, **kwargs)
self.focus()
self.update = None
#self.bind('<Key>', self.hilite)
self.tag_configure('cyanline', background='cyan')
if self.update is None:
self.hilite()
def hilite(self, event=None):
start = time.time()
cur_line = int(self.index('insert').split('.')[0])
#self.tag_remove('cyanline', 1.0, 'end')
self.tag_remove('cyanline', '@0,0',
'@0,{0}'.format(self.winfo_height()))
self.tag_add('cyanline', '{0}.0'.format(cur_line),
'{0}.0'.format(cur_line +1))
self.update = self.after(100, self.hilite)
end = time.time()
print('Time: ', (end - start) * 10000)
#return 'break'
class Test(Tk):
def __init__(self):
super().__init__()
text = MyText(self, width=40, height=10, font='courier 8 normal')
text.pack(fill='both', expand='yes')
if __name__ == '__main__':
app = Test()
app.title('Hilite line test')
app.mainloop()
########################################################################
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