pyqt系列开篇。
在使用pyqt写上位机软件时，经常会有很多重复的通用的代码，在这里整理记录。
字体库
在不同的平台使用各平台自带的效果比较好的字体，并调整字号。
class FontTools:
def __init__(self):
super(FontTools, self).__init__()
@staticmethod
def get_font():
font = QFont()
font.setPointSize(14)
if platform.system() == "Windows":
font.setFamily("NSimSun")
elif platform.system() == "Linux":
font.setFamily("NSimSun")
else:
font.setFamily("PingFang SC")
return font
使用方法
在QApplication初始化以后，设置字体app.setFont(FontTools.get_font())。
QtTools
一些控件的封装，避免重复劳动。
点击查看代码
class QtTools:
QGridLayout_NAME = "QGridLayout_"
QHBoxLayout_NAME = "QHBoxLayout_"
QVBoxLayout_NAME = "QVBoxLayout_"
QWidget_NAME = "QWidget_"
QTabWidget_NAME = "QTabWidget_"
QGroupBox_NAME = "QGroupBox_"
QLabel_NAME = "QLabel_"
QComboBox_NAME = "QComboBox_"
QPushButton_NAME = "QPushButton_"
QRadioButton_NAME = "QRadioButton_"
QCheckBox_NAME = "QCheckBox_"
QSplitter_NAME = "QSplitter_"
QScrollArea_NAME = "QScrollArea_"
QTextEdit_NAME = "QTextEdit_"
QPlainTextEdit_NAME = "QPlainTextEdit_"
QLineEdit_NAME = "QLineEdit_"
QTextBrowser_NAME = "QTextBrowser_"
QDialogButtonBox_NAME = "QDialogButtonBox_"
@staticmethod
def updateAllWidgetsFont():
font = FontTools.get_font()
for widget in QApplication.allWidgets():
widget.setFont(font)
widget.update()
def newQGridLayout(self, name: str, alignment=Qt.AlignmentFlag.AlignTop) -> QGridLayout:
obj = QGridLayout()
obj.setObjectName(self.QGridLayout_NAME + name)
obj.setAlignment(alignment)
return obj
def newQHBoxLayout(self, name: str, alignment=Qt.AlignmentFlag.AlignTop) -> QHBoxLayout:
obj = QHBoxLayout()
obj.setObjectName(self.QHBoxLayout_NAME + name)
obj.setAlignment(alignment)
return obj
def newQVBoxLayout(self, name: str, alignment=Qt.AlignmentFlag.AlignTop) -> QVBoxLayout:
obj = QVBoxLayout()
obj.setObjectName(self.QVBoxLayout_NAME + name)
obj.setAlignment(alignment)
return obj
def newQWidget(self, name: str) -> QWidget:
obj = QWidget()
obj.setObjectName(self.QWidget_NAME + name)
return obj
def newQTabWidget(self, name: str) -> QTabWidget:
obj = QTabWidget()
obj.setStyleSheet("QTabWidget {{ font-size: {}pt; }} ".format(obj.font().pointSize()+4))
obj.setObjectName(self.QTabWidget_NAME + name)
return obj
def newQGroupBox(self, name: str, title: str, alignment=Qt.AlignmentFlag.AlignCenter) -> QGroupBox:
obj = QGroupBox()
obj.setStyleSheet("QGroupBox {{ font-size: {}pt; }} ".format(obj.font().pointSize()+4))
obj.setObjectName(self.QGroupBox_NAME + name)
obj.setAlignment(alignment)
obj.setTitle(title)
return obj
def newQLabel(self, name: str, text: str, alignment=Qt.AlignmentFlag.AlignLeft) -> QLabel:
obj = QLabel()
obj.setObjectName(self.QLabel_NAME + name)
obj.setAlignment(alignment)
obj.setText(text)
return obj
def newQComboBox(self, name: str) -> QComboBox:
obj = QComboBox()
obj.setObjectName(self.QComboBox_NAME + name)
return obj
def newQPushButton(self, name: str, text: str) -> QPushButton:
obj = QPushButton()
obj.setObjectName(self.QPushButton_NAME + name)
obj.setText(text)
return obj
def newQRadioButton(self, name: str, text: str) -> QRadioButton:
obj = QRadioButton()
obj.setObjectName(self.QRadioButton_NAME + name)
obj.setText(text)
return obj
def newQCheckBox(self, name: str, text: str) -> QCheckBox:
obj = QCheckBox()
obj.setObjectName(self.QCheckBox_NAME + name)
obj.setText(text)
return obj
def newQSplitter(self, name: str, orientation=Qt.Orientation.Horizontal) -> QSplitter:
obj = QSplitter()
obj.setObjectName(self.QSplitter_NAME + name)
obj.setOrientation(orientation)
return obj
def newQScrollArea(self, name: str) -> QScrollArea:
obj = QScrollArea()
obj.setObjectName(self.QScrollArea_NAME + name)
return obj
def newQTextEdit(self, name: str) -> QTextEdit:
obj = QTextEdit()
obj.setObjectName(self.QTextEdit_NAME + name)
return obj
def newQPlainTextEdit(self, name: str) -> QPlainTextEdit:
obj = QPlainTextEdit()
obj.setObjectName(self.QPlainTextEdit_NAME + name)
return obj
def newQLineEdit(self, name: str) -> QLineEdit:
obj = QLineEdit()
obj.setObjectName(self.QLineEdit_NAME + name)
return obj
def newQTextBrowser(self, name: str) -> QTextBrowser:
obj = QTextBrowser()
obj.setObjectName(self.QTextBrowser_NAME + name)
return obj
def newQDialogButtonBoxOKCancel(self, name: str, orientation=Qt.Orientation.Horizontal) -> QDialogButtonBox:
obj = QDialogButtonBox(QDialogButtonBox.StandardButton.Ok | QDialogButtonBox.StandardButton.Cancel)
obj.setObjectName(self.QDialogButtonBox_NAME + name)
obj.setOrientation(orientation)
obj.button(QDialogButtonBox.StandardButton.Ok).setText("保存")
obj.button(QDialogButtonBox.StandardButton.Cancel).setText("取消")
return obj
@staticmethod
def newQProgressDialog(widget: QWidget, text: str, cancel_cb):
progress = QProgressDialog(widget)
progress.setWindowTitle("请稍等")
progress.setLabelText(text)
progress.setFixedSize(250, 150)
progress.setRange(0, 0)
progress.setWindowFlag(Qt.WindowContextHelpButtonHint, False)
progress.setWindowFlag(Qt.WindowCloseButtonHint, False)
progress.setWindowModality(Qt.WindowModality.WindowModal)
if cancel_cb:
progress.setCancelButtonText("取消")
progress.canceled.connect(cancel_cb)
else:
progress.setCancelButton(None)
return progress
@staticmethod
def inCenter(widget: QWidget):
"""
窗口居中显示
:return:
"""
center = QScreen.availableGeometry(QApplication.primaryScreen()).center()
geo = widget.frameGeometry()
geo.moveCenter(center)
widget.move(geo.topLeft())