Question

我想通过按一个按钮来显示/隐藏QTextBrowser小部件。切换它有什么意思吗？现在我有两个按钮;一个用于显示文本浏览器，另一个用于隐藏它。按钮也会隐藏，具体取决于文本浏览器的可见性。这个实现按预期工作，但我认为应该/必须采用更复杂的方式来实现它。有什么建议？

sbt
[info] Set current project to QuickStartSpec (in build file:/tmp/stack/)
> test:compile
[info] Updating {file:/tmp/stack/}stack...
[info] Resolving jline#jline;2.12 ...
[info] Done updating.
[info] Compiling 1 Scala source to /tmp/stack/target/scala-2.11/test-classes...
[info] 'compiler-interface' not yet compiled for Scala 2.11.4. Compiling...
[info]   Compilation completed in 6.372 s
[success] Total time: 9 s, completed 27 nov. 2015 06:38:26
> test
[info] QuickStartSpec
[info]     + This is my first specification
[info]       it is working
[info]     + really working!
[info]
[info] Total for specification QuickStartSpec
[info] Finished in 17 ms
[info] 2 examples, 0 failure, 0 error
[info]
[info] Passed: Total 2, Failed 0, Errors 0, Passed 2
[success] Total time: 1 s, completed 27 nov. 2015 06:38:31
>

只要显示或隐藏QTextBrowser小部件，就会调整对话框的大小。

Answer 1

只需保存当前状态并使用它来切换可见性：

def toggleVisibleTextBrowser(self): 
    isVisible= !isVisible # declared somewhere else
    self.textBrowser.setVisible(isVisible) 

    if isVisible:
        self.resize(461, 444)
    else
        self.resize(461, 200)
    ...

Answer 2

您只需要一个按钮和一个处理程序。单击按钮时更改按钮的文本，并使用浏览器的当前可见性在两种状态之间切换。

这是一个有效的演示：

from PySide import QtCore, QtGui

class Program(QtGui.QWidget):
    def __init__(self):
        super(Program, self).__init__()
        self.textBrowser = QtGui.QTextBrowser(self)
        self.button = QtGui.QPushButton('Hide', self)
        self.button.clicked.connect(self.toggleTextBrowser)
        layout = QtGui.QVBoxLayout(self)
        layout.addWidget(self.textBrowser)
        layout.addWidget(self.button)

    def toggleTextBrowser(self):
        if self.textBrowser.isHidden():
            self.button.setText('Hide')
            self.textBrowser.show()
            self.resize(461, 444)
        else:
            self.button.setText('Show')
            self.textBrowser.hide()
            self.resize(461, 200)

if __name__ == '__main__':

    import sys
    app = QtGui.QApplication(sys.argv)
    window = Program()
    window.setGeometry(500, 300, 461, 444)
    window.show()
    sys.exit(app.exec_())

PySide如何切换QTextBrowser的可见性

2 个答案: