PyQt5可滚动标签 – 设置工具提示

在这篇文章中，我们将看到如何为可滚动的标签设置工具提示。默认情况下，当我们创建一个标签时，所有的文本都是单行的，如果文本的长度大于标签的长度，额外的文本就不会显示，尽管在setWordWrap方法的帮助下，我们可以创建一个多行的标签，但如果文本超过了标签，仍然不会显示。为了在一个小标签中显示整个文本，我们必须使标签可滚动，为了做到这一点，我们必须建立自己的可滚动标签类，它继承了QScrollArea类，使我们可以使标签可滚动。

实现的步骤 –

创建一个继承于QScrollArea的新类
在该类中创建垂直布局
创建一个标签，使其成为多行，并将其添加到布局中
覆盖标签的setText和text方法
在主窗口类中创建该类的对象，并为其设置文本
在setToolTip方法的帮助下，为该对象添加工具提示。

下面是实现的过程

# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
 
 
# class for scrollable label
class ScrollLabel(QScrollArea):
 
    # constructor
    def __init__(self, *args, **kwargs):
        QScrollArea.__init__(self, *args, **kwargs)
 
        # making widget resizable
        self.setWidgetResizable(True)
 
        # making qwidget object
        content = QWidget(self)
        self.setWidget(content)
 
        # vertical box layout
        lay = QVBoxLayout(content)
 
        # creating label
        self.label = QLabel(content)
 
        # making label multi-line
        self.label.setWordWrap(True)
 
        # adding label to the layout
        lay.addWidget(self.label)
 
    # the setText method
    def setText(self, text):
        # setting text to the label
        self.label.setText(text)
 
    # getting text method
    def text(self):
 
        # getting text of the label
        get_text = self.label.text()
 
        # return the text
        return get_text
 
class Window(QMainWindow):
 
    def __init__(self):
        super().__init__()
 
        # setting title
        self.setWindowTitle("Python ")
 
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
 
        # calling method
        self.UiComponents()
 
        # showing all the widgets
        self.show()
 
    # method for widgets
    def UiComponents(self):
        # text to show in label
        text = "There are so many options provided by Python to develop GUI " \
               " There are so many options provided by Python to develop GUI" \
               " There are so many options provided by Python to develop GUI"
 
        # creating scroll label
        label = ScrollLabel(self)
 
        # setting text to the label
        label.setText(text)
 
        # setting geometry
        label.setGeometry(100, 100, 150, 80)
 
        # setting tool tip
        label.setToolTip("It is tool tip")
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出 :

PyQt5可滚动标签 - 设置工具提示