如何使用样式表更改 QSlider 句柄宽度
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【中文标题】如何使用样式表更改 QSlider 句柄宽度【英文标题】:How to change QSlider handle width using stylesheet 【发布时间】:2018-03-28 14:56:37 【问题描述】:我有一个我不想在 10" 触摸屏上运行的应用程序。我正在尝试使 QSlider 手柄更大,以便更容易移动。我发现了很多更改手柄宽度的示例样式表,但是当我运行代码时没有反映更改。我使用的是 PyQt5 Designer,这是滑块的样式表。
QSlider::groove:horizontal height: 10px; margin: 0 0;
QSlider::handle:horizontal background-color: black; border: 1px; height:
40px; width: 40px; margin: 0 0;
这里是主程序:
from Slidertest import Ui_MainWindow
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
class RPTApp(QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(RPTApp, self).__init__(parent)
self.setupUi(self)
def main():
app = QApplication(sys.argv)
window = RPTApp()
window.show()
app.exec_()
if __name__ == '__main__':
main()
这是滑块的设计器代码:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.PS_timeSlider = QtWidgets.QSlider(self.centralwidget)
self.PS_timeSlider.setGeometry(QtCore.QRect(100, 100, 371, 50))
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Expanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.PS_timeSlider.sizePolicy().
hasHeightForWidth())
#needed to add a return and break the line above
self.PS_timeSlider.setSizePolicy(sizePolicy)
self.PS_timeSlider.setBaseSize(QtCore.QSize(0, 0))
font = QtGui.QFont()
font.setPointSize(12)
font.setKerning(False)
self.PS_timeSlider.setFont(font)
self.PS_timeSlider.setFocusPolicy(QtCore.Qt.WheelFocus)
self.PS_timeSlider.setContextMenuPolicy(QtCore.Qt.NoContextMenu)
self.PS_timeSlider.setToolTip("")
self.PS_timeSlider.setStatusTip("")
self.PS_timeSlider.setWhatsThis("")
self.PS_timeSlider.setAccessibleName("")
self.PS_timeSlider.setAccessibleDescription("")
self.PS_timeSlider.setStyleSheet("QSlider::groove:horizontal
height: 10px; margin: 0 0;\n"
"QSlider::handle:horizontal background-color: black; border: 1px; height:
40px; width: 40px; margin: 0 0;\n"
"")
self.PS_timeSlider.setMinimum(0)
self.PS_timeSlider.setMaximum(100)
self.PS_timeSlider.setSingleStep(1)
self.PS_timeSlider.setPageStep(5)
self.PS_timeSlider.setProperty("value", 50)
self.PS_timeSlider.setSliderPosition(50)
self.PS_timeSlider.setTracking(True)
self.PS_timeSlider.setOrientation(QtCore.Qt.Horizontal)
self.PS_timeSlider.setInvertedAppearance(False)
self.PS_timeSlider.setInvertedControls(False)
self.PS_timeSlider.setTickPosition(QtWidgets.QSlider.TicksBothSides)
self.PS_timeSlider.setTickInterval(1)
self.PS_timeSlider.setObjectName("PS_timeSlider")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 640, 26))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
我已经尝试了我在搜索中找到的所有内容,但都没有运气。如果您能提供任何帮助,我将不胜感激。
【问题讨论】:
【参考方案1】:为了让它工作,我发现必须在凹槽组件上设置一个边框。此外,要使手柄大于凹槽,必须在手柄上设置负边距(参见 Qt 文档中的Customizing QSlider):
QSlider::groove:horizontal
border: 1px solid;
height: 10px;
margin: 0px;
QSlider::handle:horizontal
background-color: black;
border: 1px solid;
height: 40px;
width: 40px;
margin: -15px 0px;
PS:如果将滑块添加到布局中,可能需要设置其最小高度以防止其被压缩回原来的尺寸。
【讨论】:
谢谢。从昨天开始我就一直在失踪。以上是关于如何使用样式表更改 QSlider 句柄宽度的主要内容,如果未能解决你的问题,请参考以下文章