【PYQT5】的样式应用

第一种，引用qss文件，可能是自己写的，也可以去网上找别人写好的

if __name__ == "__main__":
    app = QApplication(sys.argv)
    path = os.path.abspath(os.path.dirname(__file__))
    p = os.path.join(path, 'qss', 'style2.qss')
    app.setStyleSheet(CommonHelper.readQss(p)) # 读取qss文件
    window = MyMainWindow()
    window.show()
    sys.exit(app.exec_())

第二种，引用第三方样式qdarkstyle，这是一个封装好的样式库

if __name__ == "__main__":
    app = QApplication(sys.argv)
    # app.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5()) # 第三方样式/暗 
　　# app.setStyleSheet(qdarkstyle.load_stylesheet(qt_api='pyqt5', palette=LightPalette)) # 第三方样式/亮
    window = MyMainWindow()
    window.show()
    sys.exit(app.exec_())

下面附带1个qss文件

/*
 * MacOS Style Sheet for QT Applications
 * Author: Jaime A. Quiroga P.
 * Company: GTRONICK
 * Last updated: 25/12/2020, 23:10.
 * Available at: https://github.com/GTRONICK/QSS/blob/master/MacOS.qss
 */
QMainWindow {
    background-color:#ececec;
}
QPushButton, QToolButton, QCommandLinkButton{
    padding: 0 5px 0 5px;
    border-style: solid;
    border-top-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-right-color: qlineargradient(spread:pad, x1:1, y1:0, x2:0, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-bottom-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-left-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-width: 2px;
    border-radius: 8px;
    color: #616161;
    font-weight: bold;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #fbfdfd, stop:0.5 #ffffff, stop:1 #fbfdfd);
}
QPushButton::default, QToolButton::default, QCommandLinkButton::default{
    border: 2px solid transparent;
    color: #FFFFFF;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #84afe5, stop:1 #1168e4);
}
QPushButton:hover, QToolButton:hover, QCommandLinkButton:hover{
    color: #3d3d3d;
}
QPushButton:pressed, QToolButton:pressed, QCommandLinkButton:pressed{
    color: #aeaeae;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #ffffff, stop:0.5 #fbfdfd, stop:1 #ffffff);
}
QPushButton:disabled, QToolButton:disabled, QCommandLinkButton:disabled{
    color: #616161;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #dce7eb, stop:0.5 #e0e8eb, stop:1 #dee7ec);
}
QLineEdit, QTextEdit, QPlainTextEdit, QSpinBox, QDoubleSpinBox, QTimeEdit, QDateEdit, QDateTimeEdit {
    border-width: 2px;
    border-radius: 8px;
    border-style: solid;
    border-top-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-right-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-bottom-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-left-color: qlineargradient(spread:pad, x1:1, y1:0, x2:0, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    background-color: #f4f4f4;
    color: #3d3d3d;
}
QLineEdit:focus, QTextEdit:focus, QPlainTextEdit:focus, QSpinBox:focus, QDoubleSpinBox:focus, QTimeEdit:focus, QDateEdit:focus, QDateTimeEdit:focus {
    border-width: 2px;
    border-radius: 8px;
    border-style: solid;
    border-top-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 #85b7e3, stop:1 #9ec1db);
    border-right-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #85b7e3, stop:1 #9ec1db);
    border-bottom-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #85b7e3, stop:1 #9ec1db);
    border-left-color: qlineargradient(spread:pad, x1:1, y1:0, x2:0, y2:0, stop:0 #85b7e3, stop:1 #9ec1db);
    background-color: #f4f4f4;
    color: #3d3d3d;
}
QLineEdit:disabled, QTextEdit:disabled, QPlainTextEdit:disabled, QSpinBox:disabled, QDoubleSpinBox:disabled, QTimeEdit:disabled, QDateEdit:disabled, QDateTimeEdit:disabled {
    color: #b9b9b9;
}
QSpinBox::up-button, QDoubleSpinBox::up-button, QTimeEdit::up-button, QDateEdit::up-button, QDateTimeEdit::up-button {
    subcontrol-origin: padding;
    subcontrol-position: top right;
    width: 15px;
    color: #272727;
    border-left-width: 1px;
    border-left-color: darkgray;
    border-left-style: solid;
    border-top-right-radius: 3px;
    padding: 3px;
}
QSpinBox::down-button, QDoubleSpinBox::down-button, QTimeEdit::down-button, QDateEdit::down-button, QDateTimeEdit::down-button {
    subcontrol-origin: padding;
    subcontrol-position: bottom right;
    width: 15px;
    color: #272727;
    border-left-width: 1px;
    border-left-color: darkgray;
    border-left-style: solid;
    border-bottom-right-radius: 3px;
    padding: 3px;
}
QSpinBox::up-button:pressed, QDoubleSpinBox::up-button:pressed, QTimeEdit::up-button:pressed, QDateEdit::up-button:pressed, QDateTimeEdit::up-button:pressed {
    color: #aeaeae;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #ffffff, stop:0.5 #fbfdfd, stop:1 #ffffff);
}
QSpinBox::down-button:pressed, QDoubleSpinBox::down-button:pressed, QTimeEdit::down-button:pressed, QDateEdit::down-button:pressed, QDateTimeEdit::down-button:pressed {
    color: #aeaeae;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #ffffff, stop:0.5 #fbfdfd, stop:1 #ffffff);
}
QSpinBox::up-button:hover, QDoubleSpinBox::up-button:hover, QTimeEdit::up-button:hover, QDateEdit::up-button:hover, QDateTimeEdit::up-button:hover {
    color: #FFFFFF;
    border-top-right-radius: 5px;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #84afe5, stop:1 #1168e4);
    
}
QSpinBox::down-button:hover, QDoubleSpinBox::down-button:hover, QTimeEdit::down-button:hover, QDateEdit::down-button:hover, QDateTimeEdit::down-button:hover {
    color: #FFFFFF;
    border-bottom-right-radius: 5px;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #84afe5, stop:1 #1168e4);
}
QSpinBox::up-arrow, QDoubleSpinBox::up-arrow, QTimeEdit::up-arrow, QDateEdit::up-arrow, QDateTimeEdit::up-arrow {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-up-symbolic.symbolic.png);
}
QSpinBox::down-arrow, QDoubleSpinBox::down-arrow, QTimeEdit::down-arrow, QDateEdit::down-arrow, QDateTimeEdit::down-arrow {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-down-symbolic.symbolic.png);
}
QProgressBar {
    max-height: 8px;
    text-align: center;
    font: italic bold 11px;
    color: #3d3d3d;
    border: 1px solid transparent;
    border-radius:4px;
    background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #ddd5d5, stop:0.5 #dad3d3, stop:1 #ddd5d5);
}
QProgressBar::chunk {
    background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #467dd1, stop:0.5 #3b88fc, stop:1 #467dd1);
    border-radius: 4px;
}
QProgressBar:disabled {
    color: #616161;
}
QProgressBar::chunk:disabled {
    background-color: #aeaeae;
}
QSlider::groove {
    border: 1px solid #bbbbbb;
    background-color: #52595d;
    border-radius: 4px;
}
QSlider::groove:horizontal {
    height: 6px;
}
QSlider::groove:vertical {
    width: 6px;
}
QSlider::handle:horizontal {
    background: #ffffff;
    border-style: solid;
    border-width: 1px;
    border-color: rgb(207,207,207);
    width: 12px;
    margin: -5px 0;
    border-radius: 7px;
}
QSlider::handle:vertical {
    background: #ffffff;
    border-style: solid;
    border-width: 1px;
    border-color: rgb(207,207,207);
    height: 12px;
    margin: 0 -5px;
    border-radius: 7px;
}
QSlider::add-page, QSlider::sub-page {
    border: 1px transparent;
    background-color: #52595d;
    border-radius: 4px;
}
QSlider::add-page:horizontal {
    background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #ddd5d5, stop:0.5 #dad3d3, stop:1 #ddd5d5);
}
QSlider::sub-page:horizontal {
    background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #467dd1, stop:0.5 #3b88fc, stop:1 #467dd1);
}
QSlider::add-page:vertical {
    background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #467dd1, stop:0.5 #3b88fc, stop:1 #467dd1);
}
QSlider::sub-page:vertical {
    background: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #ddd5d5, stop:0.5 #dad3d3, stop:1 #ddd5d5);
}
QSlider::add-page:horizontal:disabled, QSlider::sub-page:horizontal:disabled, QSlider::add-page:vertical:disabled, QSlider::sub-page:vertical:disabled {
    background: #b9b9b9;
}
QComboBox, QFontComboBox {
    border-width: 2px;
    border-radius: 8px;
    border-style: solid;
    border-top-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-right-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-bottom-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #c1c9cf, stop:1 #d2d8dd);
    border-left-color: qlineargradient(spread:pad, x1:1, y1:0, x2:0, y2:0, stop:0 #c1c9cf, stop:1 #d2d8dd);
    background-color: #f4f4f4;
    color: #272727;
    padding-left: 5px;
}
QComboBox:editable, QComboBox:!editable, QComboBox::drop-down:editable, QComboBox:!editable:on, QComboBox::drop-down:editable:on {
    background: #ffffff;
}
QComboBox::drop-down {
    subcontrol-origin: padding;
    subcontrol-position: top right;
    width: 15px;
    color: #272727;
    border-left-width: 1px;
    border-left-color: darkgray;
    border-left-style: solid;
    border-top-right-radius: 3px;
    border-bottom-right-radius: 3px;
}
QComboBox::down-arrow {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-down-symbolic.symbolic.png); /*Adawaita icon thene*/
}

QComboBox::down-arrow:on {
    top: 1px;
    left: 1px;
}
QComboBox QAbstractItemView {
    border: 1px solid darkgray;
    border-radius: 8px;
    selection-background-color: #dadada;
    selection-color: #272727;
    color: #272727;
    background: white;
}
QLabel, QCheckBox, QRadioButton {
    color: #272727;
}
QCheckBox {
    padding: 2px;
}
QCheckBox:disabled, QRadioButton:disabled {
    color: #808086;
    padding: 2px;
}

QCheckBox:hover {
    border-radius:4px;
    border-style:solid;
    padding-left: 1px;
    padding-right: 1px;
    padding-bottom: 1px;
    padding-top: 1px;
    border-width:1px;
    border-color: transparent;
}
QCheckBox::indicator:checked {
    image: url(/usr/share/icons/Adwaita/16x16/actions/object-select-symbolic.symbolic.png);
    height: 15px;
    width: 15px;
    border-style:solid;
    border-width: 1px;
    border-color: #48a5fd;
    color: #ffffff;
    border-radius: 3px;
    background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 #48a5fd, stop:0.5 #329cfb, stop:1 #48a5fd);
}
QCheckBox::indicator:unchecked {
    
    height: 15px;
    width: 15px;
    border-style:solid;
    border-width: 1px;
    border-color: #48a5fd;
    border-radius: 3px;
    background-color: #fbfdfa;
}
QLCDNumber {
    color: #616161;;
}
QMenuBar {
    background-color: #ececec;
}
QMenuBar::item {
    color: #616161;
    spacing: 3px;
    padding: 1px 4px;
    background-color: #ececec;
}

QMenuBar::item:selected {
    background-color: #dadada;
    color: #3d3d3d;
}
QMenu {
    background-color: #ececec;
}
QMenu::item:selected {
    background-color: #dadada;
    color: #3d3d3d;
}
QMenu::item {
    color: #616161;;
    background-color: #e0e0e0;
}
QTabWidget {
    color:rgb(0,0,0);
    background-color:#000000;
}
QTabWidget::pane {
    border-color: #050a0e;
    background-color: #e0e0e0;
    border-width: 1px;
    border-radius: 4px;
    position: absolute;
    top: -0.5em;
    padding-top: 0.5em;
}

QTabWidget::tab-bar {
    alignment: center;
}

QTabBar::tab {
    border-bottom: 1px solid #c0c0c0;
    padding: 3px;
    color: #272727;
    background-color: #fefefc;
    margin-left:0px;
}
QTabBar::tab:!last {
    border-right: 1px solid;
    border-right-color: #c0c0c0;
    border-bottom-color: #c0c0c0;
}
QTabBar::tab:first {
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}
QTabBar::tab:last {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
}
QTabBar::tab:selected, QTabBar::tab:last:selected, QTabBar::tab:hover {
    color: #FFFFFF;
    background-color: qlineargradient(spread:pad, x1:0.5, y1:0, x2:0.5, y2:1, stop:0 #84afe5, stop:1 #1168e4);
}
QRadioButton::indicator {
    height: 14px;
    width: 14px;
    border-style:solid;
    border-radius:7px;
    border-width: 1px;
}
QRadioButton::indicator:checked {
    border-color: #48a5fd;
    background-color: qradialgradient(cx:0.5, cy:0.5, radius:0.4,fx:0.5, fy:0.5, stop:0 #ffffff, stop:0.5 #ffffff, stop:0.6 #48a5fd, stop:1 #48a5fd);
}
QRadioButton::indicator:!checked {
    border-color: #a9b7c6;
    background-color: #fbfdfa;
}
QStatusBar {
    color:#027f7f;
}

QDial {
    background: #16a085;
}

QToolBox {
    color: #a9b7c6;
    background-color: #222b2e;
}
QToolBox::tab {
    color: #a9b7c6;
    background-color:#222b2e;
}
QToolBox::tab:selected {
    color: #FFFFFF;
    background-color:#222b2e;
}
QScrollArea {
    color: #FFFFFF;
    background-color:#222b2e;
}

QScrollBar:horizontal {
    max-height: 10px;
    border: 1px transparent grey;
    margin: 0px 20px 0px 20px;
    background: transparent;
}
QScrollBar:vertical {
    max-width: 10px;
    border: 1px transparent grey;
    margin: 20px 0px 20px 0px;
    background: transparent;
}
QScrollBar::handle:vertical, QScrollBar::handle:horizontal {
    background: #52595d;
    border-style: transparent;
    border-radius: 4px;
    min-height: 25px;
}
QScrollBar::handle:horizontal:hover, QScrollBar::handle:vertical:hover {
    background: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #467dd1, stop:0.5 #3b88fc, stop:1 #467dd1);
}
QScrollBar::add-line, QScrollBar::sub-line {
    border: 2px transparent grey;
    border-radius: 4px;
    subcontrol-origin: margin;
    background: #b9b9b9;
}
QScrollBar::add-line:horizontal {
    width: 20px;
    subcontrol-position: right;
}
QScrollBar::add-line:vertical {
    height: 20px;
    subcontrol-position: bottom;
}
QScrollBar::sub-line:horizontal {
    width: 20px;
    subcontrol-position: left;
}
QScrollBar::sub-line:vertical {
    height: 20px;
    subcontrol-position: top;
}
QScrollBar::add-line:vertical:pressed, QScrollBar::add-line:horizontal:pressed, QScrollBar::sub-line:horizontal:pressed, QScrollBar::sub-line:vertical:pressed {
    background: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 #467dd1, stop:0.5 #3b88fc, stop:1 #467dd1);
}
QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal, QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
    background: none;
}
QScrollBar::up-arrow:vertical {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-up-symbolic.symbolic.png);
}
QScrollBar::down-arrow:vertical {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-down-symbolic.symbolic.png);
}
QScrollBar::left-arrow:horizontal {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-previous-symbolic.symbolic.png);
}
QScrollBar::right-arrow:horizontal {
    image: url(/usr/share/icons/Adwaita/16x16/actions/go-next-symbolic.symbolic.png);
}