• 窗口设置、QSS


    设置窗口风格
        '''
    
    窗口、绘图与特效:设置窗口风格
    
    设置窗口中控件的风格
    
    QApplication.setStyle(...)
    
    '''
    
    import sys
    from PyQt5.QtWidgets import *
    from PyQt5.QtCore import *
    from PyQt5 import QtCore
    from PyQt5.QtGui  import *
    
    class WindowStyle(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle('设置窗口风格')
            horizontalLayout = QHBoxLayout()
            self.styleLabel = QLabel('设置窗口风格:')
            self.styleComboBox = QComboBox()
            self.styleComboBox.addItems(QStyleFactory.keys())
    
            # 获取当前窗口的风格
            print(QApplication.style().objectName())
            index = self.styleComboBox.findText(QApplication.style().objectName(),QtCore.Qt.MatchFixedString)
    
            self.styleComboBox.setCurrentIndex(index)
    
            self.styleComboBox.activated[str].connect(self.handleStyleChanged)
            horizontalLayout.addWidget(self.styleLabel)
            horizontalLayout.addWidget(self.styleComboBox)
            self.setLayout(horizontalLayout)
        def handleStyleChanged(self,style):
            QApplication.setStyle(style)
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = WindowStyle()
        form.show()
        sys.exit(app.exec_())
    image
    设置窗口样式(主要是窗口边框、标题栏以及窗口本身的样式)
    '''
    
    设置窗口样式(主要是窗口边框、标题栏以及窗口本身的样式)
    
    '''
    
    from PyQt5.QtCore import *
    import sys
    from PyQt5.QtWidgets import *
    
    class WindowPattern(QMainWindow):
        def __init__(self):
            super().__init__()
            self.resize(500,260)
            self.setWindowTitle('设置窗口的样式')
    
            self.setWindowFlags(Qt.WindowMaximizeButtonHint | Qt.WindowStaysOnTopHint )
            self.setObjectName("MainWindow")
            self.setStyleSheet("#MainWindow{border-image:url(images/python.jpg);}")
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = WindowPattern()
        form.show()
        sys.exit(app.exec_())
    

    image

    用代码控制窗口的最大化和最小化
    '''
    用代码控制窗口的最大化和最小化
    
    '''
    
    
    import sys
    from PyQt5.QtWidgets import *
    from PyQt5.QtCore import *
    
    
    ### 自定义窗口类
    class WindowMaxMin(QWidget):
    
    
        ###  构造函数
        def __init__(self, parent=None):
            '''构造函数'''
            # 调用父类构造函数
            super(WindowMaxMin, self).__init__(parent)
            self.resize(300,400)
            self.setWindowTitle("用代码控制窗口的最大化和最小化")
            self.setWindowFlags(Qt.WindowMaximizeButtonHint)
    
            layout = QVBoxLayout()
            maxButton1 = QPushButton()
            maxButton1.setText('窗口最大化1')
            maxButton1.clicked.connect(self.maximized1)
    
    
            maxButton2 = QPushButton()
            maxButton2.setText('窗口最大化2')
            maxButton2.clicked.connect(self.showMaximized)
    
            minButton = QPushButton()
            minButton.setText('窗口最小化')
            minButton.clicked.connect(self.showMinimized)
    
    
            layout.addWidget(maxButton1)
            layout.addWidget(maxButton2)
            layout.addWidget(minButton)
            self.setLayout(layout)
    
    
    
        def maximized1(self):
            desktop = QApplication.desktop()
            # 获取桌面可用尺寸
            rect = desktop.availableGeometry()
    
            self.setGeometry(rect)
    
    
    
    if __name__ == "__main__":
    
        app = QApplication(sys.argv)
    
        window = WindowMaxMin()
        window.show()
        # 应用程序事件循环
        sys.exit(app.exec_())
    
    image
    项目实战:实现绘图应用
    '''
    
    项目实战:实现绘图应用
    
    需要解决3个核心内容
    1. 如何绘图
    
    在paintEvent方法中绘图,通过调用update方法触发painEvent的调用
    
    
    2. 在哪里绘图
    
    在白色背景的QPixmap对象中绘图
    
    3. 如何通过移动鼠标进行绘图
    
    鼠标拥有3个事件:
    (1)鼠标按下:mousePressEvent
    (2)鼠标移动:mouseMoveEvent
    (3)鼠标抬起:mouseReleaseEvent
    
    '''
    
    import sys
    from PyQt5.QtWidgets import QApplication, QWidget
    from PyQt5.QtGui import QPainter, QPixmap
    from PyQt5.QtCore import Qt, QPoint
    
    
    class Drawing(QWidget):
        def __init__(self, parent=None):
            super(Drawing, self).__init__(parent)
            self.setWindowTitle("绘图应用")
            self.pix = QPixmap()
            self.lastPoint = QPoint()
            self.endPoint = QPoint()
            self.initUi()
    
        def initUi(self):
    
            self.resize(600, 600)
            # 画布大小为400*400,背景为白色
            self.pix = QPixmap(600, 600)
            self.pix.fill(Qt.white)
    
        def paintEvent(self, event):
            pp = QPainter(self.pix)
            # 根据鼠标指针前后两个位置绘制直线
            pp.drawLine(self.lastPoint, self.endPoint)
            # 让前一个坐标值等于后一个坐标值,
            # 这样就能实现画出连续的线
            self.lastPoint = self.endPoint
            painter = QPainter(self)
            painter.drawPixmap(0, 0, self.pix)
    
        def mousePressEvent(self, event):
            if event.button() == Qt.LeftButton:
                self.lastPoint = event.pos()
    
        def mouseMoveEvent(self, event):
            if event.buttons() and Qt.LeftButton:
                self.endPoint = event.pos()
                self.update()
    
        def mouseReleaseEvent(self, event):
            # 鼠标左键释放
            if event.button() == Qt.LeftButton:
                self.endPoint = event.pos()
                # 进行重新绘制
                self.update()
    
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = Drawing()
        form.show()
        sys.exit(app.exec_())
    
    image
    
    QSS基础
    '''
    
    QSS基础
    
    QSS(Qt Style Sheets)
    Qt样式表
    
    用于设置控件的样式
    
    CSS
    
    '''
    
    from PyQt5.QtWidgets import *
    import sys
    class BasicQSS(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("QSS样式")
            btn1 = QPushButton(self)
            btn1.setText("按钮1")
            btn2 = QPushButton(self)
            btn2.setText("按钮2")
    
            btn3 = QPushButton(self)
            btn3.setText("按钮3")
    
            vbox = QVBoxLayout()
            vbox.addWidget(btn1)
            vbox.addWidget(btn2)
            vbox.addWidget(btn3)
    
            self.setLayout(vbox)
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = BasicQSS()
        # 选择器
        qssStyle = '''
            QPushButton {
                background-color:red
            }
        '''
        form.setStyleSheet(qssStyle)
        form.show()
        sys.exit(app.exec_())
    image
    QDarkStyleSheet样式
    '''
    
    使用QSS选择器设置控件样式
    
    '''
    
    from PyQt5.QtWidgets import *
    import sys
    import qdarkstyle
    class QSSSelector(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("QSS样式")
            btn1 = QPushButton(self)
            btn1.setText("按钮1")
            btn2 = QPushButton(self)
            btn2.setProperty('name','btn2')
            btn2.setText("按钮2")
    
            btn3 = QPushButton(self)
            btn3.setProperty('name','btn3')
            btn3.setText("按钮3")
    
            vbox = QVBoxLayout()
            vbox.addWidget(btn1)
            vbox.addWidget(btn2)
            vbox.addWidget(btn3)
    
            self.setLayout(vbox)
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = QSSSelector()
        # 选择器
        qssStyle = '''
            QPushButton[name="btn2"] {
                background-color:red;
                color:yellow;
                height:120;
                font-size:60px;
            }
            QPushButton[name="btn3"] {
                background-color:blue;
                color:yellow;
                height:60;
                font-size:30px;
            }
        '''
        #form.setStyleSheet(qssStyle)
        form.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())
        form.show()
        sys.exit(app.exec_())
    image
    QSS子控件选择器
    '''
    
    QSS子控件选择器
    
    QComboBox
    
    '''
    
    from PyQt5.QtWidgets import *
    import sys
    
    class QSSSubControl(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("QSS子控件选择器")
            combo = QComboBox(self)
            combo.setObjectName("myComboBox")
            combo.addItem("Window")
            combo.addItem("Linux")
            combo.addItem("Mac OS X")
    
            combo.move(50,50)
    
            self.setGeometry(250,200,320,150)
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = QSSSubControl()
        qssStyle = '''
           QComboBox#myComboBox::drop-down {
               image:url(./images/dropdown.png)
           }
        '''
        form.setStyleSheet(qssStyle)
        form.show()
        sys.exit(app.exec_())
    image
    设置背景色和背景图-QSS、QPalette
    '''
    
    使用多种方式设置窗口背景色和背景图片
    
    1.  QSS
    2.  QPalette
    3.  直接绘制
    
    '''
    
    import sys
    from PyQt5.QtWidgets import *
    from PyQt5.QtGui import *
    from PyQt5.QtCore import *
    
    app = QApplication(sys.argv)
    win = QMainWindow()
    win.setWindowTitle("背景图片")
    win.resize(350,250)
    win.setObjectName("MainWindow")
    '''
    # 通过QSS动态修改窗口的背景颜色和背景图片
    win.setStyleSheet("#MainWindow{border-image:url(./images/python.jpg);}")
    win.setStyleSheet("#MainWindow{background-color:yellow}")
    '''
    win.setStyleSheet("#MainWindow{border-image:url(./images/python.jpg);}")
    # 通过QPalette设置背景图片和背景颜色
    #palette = QPalette()
    #palette.setBrush(QPalette.Background,QBrush(QPixmap("./images/python.jpg")))
    #palette.setColor(QPalette.Background,Qt.red)
    #win.setPalette(palette)
    
    win.show()
    sys.exit(app.exec())
    
    
    image
    设置背景色和背景图-直接绘制
    '''
    
    使用多种方式设置窗口背景色和背景图片
    
    1.  QSS
    2.  QPalette
    3.  直接绘制
    
    '''
    
    import sys
    from PyQt5.QtWidgets import *
    from PyQt5.QtGui import *
    from PyQt5.QtCore import *
    
    class Background2(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("绘制背景图片")
        def paintEvent(self, event):
            painter = QPainter(self)
            pixmap = QPixmap('./images/screen1.jpg')
    
            painter.drawPixmap(self.rect(),pixmap)
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = Background2()
    
        form.show()
        sys.exit(app.exec_())
    image
    实现不规则窗口(异形窗口)
    '''
    
    实现不规则窗口(异形窗口)
    
    通过mask实现异形窗口
    
    需要一张透明的png图,透明部分被扣出,形成一个非矩形的区域
    
    
    移动和关闭不规则窗口
    '''
    
    import sys
    from PyQt5.QtWidgets import *
    from PyQt5.QtGui import *
    from PyQt5.QtCore import *
    
    class AbnormityWindow(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("异形窗口")
            self.pix = QBitmap('./images/mask.png')
            self.resize(self.pix.size())
            self.setMask(self.pix)
    
        def mousePressEvent(self, event):
            if event.button() == Qt.LeftButton:
                self.m_drag = True
    
                self.m_DragPosition = event.globalPos() - self.pos()
                self.setCursor(QCursor(Qt.OpenHandCursor))
                print(event.globalPos())  #
                print(event.pos())
                print(self.pos())
            if event.button() == Qt.RightButton:
                self.close()
    
        def mouseMoveEvent(self, QMouseEvent):
            if Qt.LeftButton and self.m_drag:
                # 当左键移动窗体修改偏移值
                # QPoint
                # 实时计算窗口左上角坐标
                self.move(QMouseEvent.globalPos() - self.m_DragPosition)
    
    
        def mouseReleaseEvent(self, QMouseEvent):
            self.m_drag = False
            self.setCursor(QCursor(Qt.ArrowCursor))
        def paintEvent(self, event):
            painter = QPainter(self)
            painter.drawPixmap(0,0,self.pix.width(),self.pix.height(),QPixmap('./images/screen1.jpg'))
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = AbnormityWindow()
        form.show()
        sys.exit(app.exec_())
    
    image
    窗体的动画实现
    '''
    不规则窗体的动画实现
    
    '''
    
    import sys
    from PyQt5.QtWidgets import QApplication, QWidget
    from PyQt5.QtGui import QPixmap, QPainter, QCursor
    from PyQt5.QtCore import Qt, QTimer
    
    
    class AnimationWindows(QWidget):
        def __init__(self, parent=None):
            super(AnimationWindows, self).__init__(parent)
            self.i = 1
            self.mypix()
            self.timer = QTimer()
            self.timer.setInterval(500)  # 500毫秒
            self.timer.timeout.connect(self.timeChange)
            self.timer.start()
    
        # 显示不规则 pic
        def mypix(self):
            self.update()
            if self.i == 5:
                self.i = 1
            self.mypic = {1: './images/left.png', 2: "./images/up.png", 3: './images/right.png', 4: './images/down.png'}
            self.pix = QPixmap(self.mypic[self.i])
            self.resize(self.pix.size())
            self.setMask(self.pix.mask())
            self.dragPosition = None
    
        def mousePressEvent(self, event):
            if event.button() == Qt.LeftButton:
                self.m_drag = True
                self.m_DragPosition = event.globalPos() - self.pos()
    
                self.setCursor(QCursor(Qt.OpenHandCursor))
    
        def mouseMoveEvent(self, QMouseEvent):
            if Qt.LeftButton and self.m_drag:
                self.move(QMouseEvent.globalPos() - self.m_DragPosition)
    
    
        def mouseReleaseEvent(self, QMouseEvent):
            self.m_drag = False
            self.setCursor(QCursor(Qt.ArrowCursor))
    
        def paintEvent(self, event):
            painter = QPainter(self)
            painter.drawPixmap(0, 0, self.pix.width(), self.pix.height(), self.pix)
    
        # 鼠标双击事件
        def mouseDoubleClickEvent(self, event):
            if event.button() == 1:
                self.i += 1
                self.mypix()
    
        # 每500毫秒修改paint
        def timeChange(self):
            self.i += 1
            self.mypix()
    
    
    if __name__ == '__main__':
        app = QApplication(sys.argv)
        form = AnimationWindows()
        form.show()
        sys.exit(app.exec_())
    
    image
    用动画效果改变窗口尺寸
    '''
    
    用动画效果改变窗口尺寸
    
    
    QPropertyAnimation
    
    
    
    
    '''
    
    from PyQt5.QtGui import *
    from PyQt5.QtCore import *
    from PyQt5.QtWidgets import *
    import sys
    
    
    class AnimWindow(QWidget):
        def __init__(self):
            super(AnimWindow, self).__init__()
            self.OrigHeight = 50
            self.ChangeHeight = 150
            self.setGeometry(QRect(500, 400, 150, self.OrigHeight))
            self.btn = QPushButton('展开', self)
            self.btn.setGeometry(10, 10, 60, 35)
            self.btn.clicked.connect(self.change)
        def change(self):
            currentHeight = self.height()
            if self.OrigHeight == currentHeight:
                startHeight = self.OrigHeight
                endHeight = self.ChangeHeight
                self.btn.setText('收缩')
            else:
                startHeight = self.ChangeHeight
                endHeight= self.OrigHeight
                self.btn.setText('展开')
    
            self.animation = QPropertyAnimation(self,b'geometry')
            self.animation.setDuration(500)
            self.animation.setStartValue(QRect(500,400,150,startHeight))
            self.animation.setEndValue(QRect(500,400,150,endHeight))
            self.animation.start()
    
    
    
    if __name__ == '__main__':
        app = QApplication(sys.argv)
        window = AnimWindow()
        window.show()
        sys.exit(app.exec_())
    
    image
    用动画效果一不同速度移动窗口
    '''
    
    用动画效果一不同速度移动窗口
    
    '''
    
    from PyQt5.QtGui import *
    from PyQt5.QtCore import *
    from PyQt5.QtWidgets import *
    import sys
    
    app = QApplication(sys.argv)
    
    window1 = QMainWindow()
    window1.show()
    window2 = QMainWindow()
    window2.show()
    
    animation1 = QPropertyAnimation(window1, b'geometry')
    animation2 = QPropertyAnimation(window2, b'geometry')
    
    group = QParallelAnimationGroup()  # 并行
    group = QSequentialAnimationGroup()  # 串行
    
    group.addAnimation(animation1)
    group.addAnimation(animation2)
    
    animation1.setDuration(3000)
    animation1.setStartValue(QRect(0,0,100,30))
    animation1.setEndValue(QRect(250,250,100,30))
    animation1.setEasingCurve(QEasingCurve.OutBounce)
    
    animation2.setDuration(4000)
    animation2.setStartValue(QRect(250,150,100,30))
    animation2.setEndValue(QRect(850,250,100,30))
    animation2.setEasingCurve(QEasingCurve.CosineCurve)
    
    group.start()
    
    sys.exit(app.exec())
    
    
    image
    装载Gif动画
    '''
    
    装载Gif动画
    
    QMovie
    '''
    
    import sys
    from PyQt5.QtWidgets import QApplication,  QLabel  ,QWidget
    from PyQt5.QtCore import Qt
    from PyQt5.QtGui import QMovie
    
    class LoadingGif(QWidget):
        def __init__(self):
            super().__init__()
            self.label = QLabel("",self)
            self.setFixedSize(128,128)
            self.setWindowFlags(Qt.Dialog | Qt.CustomizeWindowHint)
            self.movie = QMovie('./images/loading.gif')
            self.label.setMovie(self.movie)
            self.movie.start()
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = LoadingGif()
        form.show()
        sys.exit(app.exec_())
    
    
    image
    使用QSS为标签和按钮添加背景图
    '''
    
    使用QSS为标签和按钮添加背景图
    
    '''
    
    from PyQt5.QtWidgets import *
    import sys
    
    class LabelButtonBackground(QWidget):
        def __init__(self):
            super().__init__()
            label1 = QLabel(self)
            label1.setToolTip('这是一个文本标签')
            label1.setStyleSheet('QLabel{border-image:url(./images/python.jpg);}')
    
            label1.setFixedWidth(476)
            label1.setFixedHeight(259)
    
            btn1 = QPushButton(self)
            btn1.setObjectName('btn1')
            btn1.setMaximumSize(48,48)
            btn1.setMinimumSize(48,48)
    
            style = '''
            
                #btn1{
                    border-radius:4px;
                    background-image:url('./images/add.png');
                }
                #btn1:Pressed {
                    background-image:url('./images/addhover.png');
                }
            '''
            btn1.setStyleSheet(style)
    
            vbox = QVBoxLayout()
            vbox.addWidget(label1)
            vbox.addStretch()
            vbox.addWidget(btn1)
    
            self.setLayout(vbox)
            self.setWindowTitle('使用QSS为标签和按钮添加背景图')
    
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        form = LabelButtonBackground()
        form.show()
        sys.exit(app.exec_())
    
    image
    缩放图片
    '''
    
    缩放图片
    
    QImage.scaled
    
    '''
    
    from PyQt5.QtWidgets import QApplication, QLabel, QWidget, QVBoxLayout
    from PyQt5.QtGui import QImage, QPixmap
    from PyQt5.QtCore import Qt
    import sys
    
    
    class ScaleImage(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("图片大小缩放例子")
            filename = './images/Cloudy_72px.png'
            img = QImage(filename)
            label1 = QLabel(self)
            label1.setFixedWidth(200)
            label1.setFixedHeight(200)
    
            result = img.scaled(label1.width(),label1.height(),Qt.IgnoreAspectRatio,Qt.SmoothTransformation)
            label1.setPixmap(QPixmap.fromImage(result))
    
            vbox = QVBoxLayout()
            vbox.addWidget(label1)
    
            self.setLayout(vbox)
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        win = ScaleImage()
        win.show()
        sys.exit(app.exec_())
    
    
    image
    创建透明窗口
    '''
    
    创建透明窗口
    
    '''
    
    from PyQt5.Qt import *
    import sys
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        win = QMainWindow()
        win.setWindowTitle('窗口的透明度设置')
        # 0到1,1表示不透明,0表示完全透明
        win.setWindowOpacity(0.6)
    
        button = QPushButton('我的按钮',win)
    
        win.resize(400,200)
        win.show()
        sys.exit(app.exec())
    image
    装载QSS文件
    '''
    
    装载QSS文件
    
    '''
    
    import sys
    from PyQt5.QtWidgets import *
    from CommonHelper import CommonHelper
    
    class MainWindow(QMainWindow):
        def __init__(self, parent=None):
            super(MainWindow, self).__init__(parent)
            self.resize(477, 258)
            self.setWindowTitle("加载QSS文件")
            btn = QPushButton()
            btn.setText('装载QSS文件')
            btn.setToolTip('提示文本')
    
            vbox = QVBoxLayout()
            vbox.addWidget(btn)
            btn.clicked.connect(self.onClick)
            self.setLayout(vbox)
    
            widget  = QWidget(self)
            self.setCentralWidget(widget)
            widget.setLayout(vbox)
    
        def onClick(self):
            styleFile = './style.qss'
            qssStyle = CommonHelper.readQSS(styleFile)
            win.setStyleSheet(qssStyle)
    
    
    if __name__ == "__main__":
        app = QApplication(sys.argv)
        win = MainWindow()
    
        win.show()
        sys.exit(app.exec_())
    style.qss
    QMainWindow{
        border-image:url(./images/python.jpg);
    }
    
    QToolTip {
       border:1px solid rgb(45,45,45);
       background:white;
       color:red
    }
    CommonHelper.py
    class CommonHelper:
        @staticmethod
        def readQSS(style):
            with open(style,'r') as f:
                return f.read()
    image

    天道酬勤 循序渐进 技压群雄
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  • 原文地址:https://www.cnblogs.com/wuyuan2011woaini/p/14836620.html
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