saber家的呆毛储藏室2333hh
问题描述
我正在尝试使用没有空格但用逗号分隔的文本制作多行 qlabel.例如:'猫、狗、兔子、火车、汽车、飞机、奶酪、肉、门、窗'
i am trying to make a multi line qlabel with a text without space but delimited by comma. ex : 'cat,dog,rabbit,train,car,plane,cheese,meat,door,window'
我发现使用 setwordwrap 可以实现多行，但它会根据空格中断.
i have found that multiline is possible with setwordwrap but it breaks based on spaces.
如何根据逗号换行?
这是一个代码示例:
from pyside2.qtwidgets import *
class mainwindow(qmainwindow):
def __init__(self, *args, **kwargs):
super(mainwindow, self).__init__(*args, **kwargs)
self.setgeometry(500,100,50,100)
line = qlabel()
line.setmaximumwidth(150)
line.settext('cat,dog,rabbit,train,car,plane,cheese,meat,door,window')
line.setwordwrap(true)
self.setcentralwidget(line)
self.show()
if __name__ == '__main__':
app = qapplication([])
window = mainwindow()
app.exec_()
推荐答案
一种方法是根据 qlabel 大小编辑文本.
one way of doing it would be to edit the text according to qlabel size.
以下触发器会触发每个行大小事件，因此这是一个成本高昂的百家乐凯发k8的解决方案.
the following triggers on every line size event, making this a costly solution.
首先我们添加一个信号:
first we add a signal :
class mainwindow(qmainwindow):
resized = qtcore.pyqtsignal()
然后我们用一个方法连接信号，设置 wordwrap 为 false 并添加自定义调整大小事件，每次标签获得新大小时触发:
then we connect signal with a method ,set wordwrap to false and add custom resize event that triggers every time label gets a new size:
self.line.setwordwrap(false) self.line.resizeevent = self.on_resize_event self.resized.connect(self.add_spaces)
on_resize_event 处理大小变化并触发 add_spaces :
on_resize_event which handles size changes and triggers add_spaces :
def on_resize_event(self, event):
if not self._flag:
self._flag = true
self.resized.emit()
qtcore.qtimer.singleshot(100, lambda: setattr(self, "_flag", false))
print(f"resized line: {self.line.size()}")
return super(mainwindow, self).resizeevent(event)
最后我们有一个 add_spaces 方法，它计算最大行长度并以逗号分隔.
lastly we have a add_spaces method which calculates maximum line length and splits on comma.
def add_spaces(self):
size = self.line.size()
text = self.mystring
result_string = ""
temp_label = qlabel()
temp_text = ""
#split the chunks by delimiter
chunks = text.split(",")
for i,chunk in enumerate(chunks):
temp_text = chunk ",";
if len(chunks) > i 1:
temp_label.settext(temp_text chunks[i 1] ",")
width = temp_label.fontmetrics().boundingrect(temp_label.text()).width()
if width >= size.width():
result_string = temp_text "
"
temp_text = ""
else:
result_string = temp_text
self.line.settext(result_string)
完整代码:
from pyqt5 import qtcore
from pyqt5.qtwidgets import qmainwindow, qlabel, qapplication
class mainwindow(qmainwindow):
resized = qtcore.pyqtsignal()
def __init__(self, *args, **kwargs):
super(mainwindow, self).__init__(*args, **kwargs)
self._flag = false
self.line = qlabel()
self.line.setstylesheet("background-color: grey;color:white;")
self.line.setmaximumwidth(300)
self.line.setminimumwidth(20)
self.mystring = 'cat,dog,rabbit,train,car,plane,cheese,meat,door,window,very,long,list of words,list of words,word,word,word,list of word,word,list of word,list of word'
self.line.settext(self.mystring)
self.setcentralwidget(self.line)
self.line.setwordwrap(false)
self.line.resizeevent = self.on_resize_event
self.resized.connect(self.add_spaces)
self.show()
self.add_spaces()
def on_resize_event(self, event):
if not self._flag:
self._flag = true
self.resized.emit()
qtcore.qtimer.singleshot(100, lambda: setattr(self, "_flag", false))
print(f"resized line: {self.line.size()}")
return super(mainwindow, self).resizeevent(event)
def add_spaces(self):
size = self.line.size()
text = self.mystring
result_string = ""
temp_label = qlabel()
temp_text = ""
#split the chunks by delimiter
chunks = text.split(",")
for i,chunk in enumerate(chunks):
temp_text = chunk ",";
if len(chunks) > i 1:
temp_label.settext(temp_text chunks[i 1] ",")
width = temp_label.fontmetrics().boundingrect(temp_label.text()).width()
if width >= size.width():
result_string = temp_text "
"
temp_text = ""
else:
result_string = temp_text
self.line.settext(result_string)
if __name__ == '__main__':
app = qapplication([])
window = mainwindow()
app.exec_()
