如何旋转 QPushButton? [英] How to rotate a QPushButton?
问题描述
我想---使用 Python 和 Qt4---旋转 QPushButton(或至少它的文本)所以它可以垂直站立.我看过一些在线文档,但我无法理解它---它是用 C 语言编写的,而我是 C 文盲.
I would like---with Python and Qt4---to rotate a QPushButton (or at least its text) so it can stand vertically. I've seen some documentation online, but I couldn't make much sense out of it---it's in C and I'm C-illiterate.
从我读到的内容来看,需要重新实现 paintEvent() 处理程序,实例化并旋转一个 QPainter().然而,我无法弄清楚如何为我只需要的一个 QString 或 QPushButton 执行此操作.我假设 QPaintEvent 会有一个发送者"属性,就像信号一样,但它没有.我似乎能从这个事件中得到一个 QRect 或 QRegion.
From what I read though, one needs to re-implement the paintEvent() handler, instantiate and rotate a QPainter(). What I can't figure out however is how to do this for the one QString or QPushButton I need only. I assumed the QPaintEvent would have a "sender" attribute, like signals do, but it hasn't. All I can seem to get from this event is a QRect or QRegion.
如何找出特定于我的按钮或其标签的事件?
或者,因为这确实是个问题,如何旋转 QPushButton?
How can I find out the event specific to my button or its label?
Or, because that's the question really, how to rotate a QPushButton?
Mru,下面建议了 一些 C++ 示例,它完全重新实现了 QPushButton.由于我对 C++ 一无所知,而且我真的不需要完全重新实现,因此我尝试根据该示例在 Python 中重新实现 painEvent()
处理程序.
Mru, here below suggested some C++ example, which reimplements the QPushButton completely. Since I have no clue about C++ and since I don't really need a full reimplementation, I've tried to reimplement the painEvent()
handler in Python, based on that example.
这是我翻译的内容,但它不起作用:\
Here is what I have translated, but it does not work :\
#!/usr/bin/env python
from PyQt4 import QtGui, QtCore
import sys
class RotatedButton(QtGui.QPushButton):
def __init__(self, text, parent, orientation = "west"):
QtGui.QPushButton.__init__(self, text, parent)
self.orientation = orientation
def paintEvent(self, event):
painter = QtGui.QStylePainter(self)
if self.orientation == 'west':
painter.rotate(90)
elif self.orientation == 'east':
painter.rotate(270)
else:
raise TypeError
painter.drawControl(QtGui.QStyle.CE_PushButton, self.getSyleOptions())
def getSyleOptions(self):
options = QtGui.QStyleOptionButton()
options.initFrom(self)
size = options.rect.size()
size.transpose()
options.rect.setSize(size)
options.features = QtGui.QStyleOptionButton.None
options.text = self.text()
options.icon = self.icon()
options.iconSize = self.iconSize()
return options
class Main(QtGui.QFrame):
def __init__(self):
QtGui.QFrame.__init__(self)
self.count = 0
self.application = QtCore.QCoreApplication.instance()
self.layout = QtGui.QHBoxLayout()
self.button = RotatedButton("Hello", self, orientation="west")
self.layout.addWidget(self.button)
self.setLayout(self.layout)
if __name__ == '__main__':
application = QtGui.QApplication(sys.argv)
application.main = Main()
application.main.show()
sys.exit(application.exec_())
推荐答案
基于您的代码:
#!/usr/bin/env python
from PyQt4 import QtGui, QtCore
import sys
class RotatedButton(QtGui.QPushButton):
def __init__(self, text, parent, orientation = "west"):
super(RotatedButton,self).__init__(text, parent)
self.orientation = orientation
def paintEvent(self, event):
painter = QtGui.QStylePainter(self)
painter.rotate(90)
painter.translate(0, -1 * self.width());
painter.drawControl(QtGui.QStyle.CE_PushButton, self.getSyleOptions())
def minimumSizeHint(self):
size = super(RotatedButton, self).minimumSizeHint()
size.transpose()
return size
def sizeHint(self):
size = super(RotatedButton, self).sizeHint()
size.transpose()
return size
def getSyleOptions(self):
options = QtGui.QStyleOptionButton()
options.initFrom(self)
size = options.rect.size()
size.transpose()
options.rect.setSize(size)
options.features = QtGui.QStyleOptionButton.None
if self.isFlat():
options.features |= QtGui.QStyleOptionButton.Flat
if self.menu():
options.features |= QtGui.QStyleOptionButton.HasMenu
if self.autoDefault() or self.isDefault():
options.features |= QtGui.QStyleOptionButton.AutoDefaultButton
if self.isDefault():
options.features |= QtGui.QStyleOptionButton.DefaultButton
if self.isDown() or (self.menu() and self.menu().isVisible()):
options.state |= QtGui.QStyle.State_Sunken
if self.isChecked():
options.state |= QtGui.QStyle.State_On
if not self.isFlat() and not self.isDown():
options.state |= QtGui.QStyle.State_Raised
options.text = self.text()
options.icon = self.icon()
options.iconSize = self.iconSize()
return options
class Main(QtGui.QFrame):
def __init__(self):
QtGui.QFrame.__init__(self)
self.application = QtCore.QCoreApplication.instance()
self.layout = QtGui.QHBoxLayout()
self.button = RotatedButton("Hello", self, orientation="west")
self.layout.addWidget(self.button)
self.setLayout(self.layout)
if __name__ == '__main__':
application = QtGui.QApplication(sys.argv)
application.main = Main()
application.main.show()
sys.exit(application.exec_())
这篇关于如何旋转 QPushButton?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!