本文借用HTML的css語(yǔ)法，將樣式表應(yīng)用到窗口部件。這里只是個(gè)簡(jiǎn)單的例子，實(shí)際上樣式表的語(yǔ)法很豐富。
以下類似于css：
StyleSheet = """
QComboBox { color: darkblue; }
QLineEdit { color: darkgreen; }
QLineEdit[mandatory="true"] { #mandatory="true"時(shí)，QLineEdit的樣式會(huì)變化
background-color: rgb(255, 255, 127);
color: darkblue;
}
如果在選擇器的前面加上一個(gè)句點(diǎn)，比如.QLineEdit，則選擇器就會(huì)只應(yīng)用于指定的類，而不會(huì)應(yīng)用于這個(gè)類的子類。如果要求選擇器僅用于某一特定窗口部件，則可以對(duì)該窗口部件調(diào)用setObjectName(),然后用該名字作為選擇器的一部分。比如，如果有一個(gè)按鈕，其對(duì)象名字是“findButton”，則應(yīng)用于這個(gè)按鈕的選擇器就應(yīng)該是QpushButton#findButton。有些窗口部件會(huì)有一些子控件。例如QComboBox會(huì)有一個(gè)箭頭子控件，用戶通過(guò)點(diǎn)擊這個(gè)箭頭來(lái)看到下拉列表。子控件可以指定為選擇器的一部分?C例如，QComboBox::drop-down。偽狀態(tài)可以用一個(gè)冒號(hào)指定?C例如，QCheckBox::checked.
#!/usr/bin/env python3
import sys
from PyQt5.QtWidgets import (QApplication, QComboBox, QDialog,
QDialogButtonBox, QGridLayout, QLabel, QLineEdit, QVBoxLayout)
class ContactDlg(QDialog):
StyleSheet = """
QComboBox { color: darkblue; }
QLineEdit { color: darkgreen; }
QLineEdit[mandatory="true"] {
background-color: rgb(255, 255, 127);
color: darkblue;
}
"""
def __init__(self, parent=None):
super(ContactDlg, self).__init__(parent)
forenameLabel = QLabel("&Forename:")
self.forenameEdit = QLineEdit()
forenameLabel.setBuddy(self.forenameEdit)
surnameLabel = QLabel("&Surname:")
self.surnameEdit = QLineEdit()
surnameLabel.setBuddy(self.surnameEdit)
categoryLabel = QLabel("&Category:")
self.categoryComboBox = QComboBox()
categoryLabel.setBuddy(self.categoryComboBox)
self.categoryComboBox.addItems(["Business", "Domestic",
"Personal"])
companyLabel = QLabel("C&ompany:")
self.companyEdit = QLineEdit()
companyLabel.setBuddy(self.companyEdit)
addressLabel = QLabel("A&ddress:")
self.addressEdit = QLineEdit()
addressLabel.setBuddy(self.addressEdit)
phoneLabel = QLabel("&Phone:")
self.phoneEdit = QLineEdit()
phoneLabel.setBuddy(self.phoneEdit)
mobileLabel = QLabel("&Mobile:")
self.mobileEdit = QLineEdit()
mobileLabel.setBuddy(self.mobileEdit)
faxLabel = QLabel("Fa&x:")
self.faxEdit = QLineEdit()
faxLabel.setBuddy(self.faxEdit)
emailLabel = QLabel("&Email:")
self.emailEdit = QLineEdit()
emailLabel.setBuddy(self.emailEdit)
self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|
QDialogButtonBox.Cancel)
addButton = self.buttonBox.button(QDialogButtonBox.Ok)
addButton.setText("&Add")
addButton.setEnabled(False)
grid = QGridLayout()
grid.addWidget(forenameLabel, 0, 0)
grid.addWidget(self.forenameEdit, 0, 1)
grid.addWidget(surnameLabel, 0, 2)
grid.addWidget(self.surnameEdit, 0, 3)
grid.addWidget(categoryLabel, 1, 0)
grid.addWidget(self.categoryComboBox, 1, 1)
grid.addWidget(companyLabel, 1, 2)
grid.addWidget(self.companyEdit, 1, 3)
grid.addWidget(addressLabel, 2, 0)
grid.addWidget(self.addressEdit, 2, 1, 1, 3)
grid.addWidget(phoneLabel, 3, 0)
grid.addWidget(self.phoneEdit, 3, 1)
grid.addWidget(mobileLabel, 3, 2)
grid.addWidget(self.mobileEdit, 3, 3)
grid.addWidget(faxLabel, 4, 0)
grid.addWidget(self.faxEdit, 4, 1)
grid.addWidget(emailLabel, 4, 2)
grid.addWidget(self.emailEdit, 4, 3)
layout = QVBoxLayout()
layout.addLayout(grid)
layout.addWidget(self.buttonBox)
self.setLayout(layout)
self.lineedits = (self.forenameEdit, self.surnameEdit,
self.companyEdit, self.phoneEdit, self.emailEdit)
for lineEdit in self.lineedits:
lineEdit.setProperty("mandatory", True)
lineEdit.textEdited.connect(self.updateUi)
self.categoryComboBox.activated.connect(self.updateUi)
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(self.reject)
self.setStyleSheet(ContactDlg.StyleSheet)
self.setWindowTitle("Add Contact")
def updateUi(self):
mandatory = bool(self.companyEdit.property("mandatory"))
if self.categoryComboBox.currentText() == "Business":
if not mandatory:
self.companyEdit.setProperty("mandatory", True)
elif mandatory:
self.companyEdit.setProperty("mandatory", False)
if (mandatory !=
bool(self.companyEdit.property("mandatory"))):
self.setStyleSheet(ContactDlg.StyleSheet)
enable = True
for lineEdit in self.lineedits:
if (bool(lineEdit.property("mandatory")) and
not lineEdit.text()):
enable = False
break
self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enable)
if __name__ == "__main__":
app = QApplication(sys.argv)
form = ContactDlg()
form.show()
app.exec_()
運(yùn)行結(jié)果：
以上這篇python3+PyQt5 自定義窗口部件--使用窗口部件樣式表的方法就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。
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