add some pyqt examples

PyQt5/LCD电子时钟/DigitalClock.py

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+'''
+Created on 2018年8月9日
+
+@author: Freedom
+'''
+from PyQt5.QtWidgets import QLCDNumber
+from PyQt5.Qt import QPoint, QPalette, QTimer, QTime, QRect
+from PyQt5.QtCore import Qt
+
+class DigitalClock(QLCDNumber):
+
+
+    def __init__(self, Parent=None):
+        '''
+        Constructor
+        '''
+        super().__init__(Parent)
+        self.__InitData() #初始化类的数据
+        self.__InitView() #初始化界面
+
+    def __InitData(self):
+        #初始化数据
+        self.__ShowColon = True #是否显示时间如[12:07]中的冒号，用于冒号的闪烁
+        self.__dragPosition = QPoint(0,0) #用于保存鼠标相对于电子时钟左上角的偏移值
+
+        self.__timer = QTimer(self) #新建一个定时器
+        #关联timeout信号和showTime函数，每当定时器过了指定时间间隔，就会调用showTime函数
+        self.__timer.timeout.connect(self.showTime)
+
+        self.__timer.start(1000) #设置定时间隔为1000ms即1s，并启动定时器
+
+
+    def __InitView(self):
+        #初始化界面
+        palette = QPalette() #新建调色板
+        palette.setColor(QPalette.Window, Qt.blue) #将调色板中的窗体背景色设置为蓝色
+        self.setPalette(palette) #在本窗体载入此调色板
+        self.setWindowFlags(Qt.FramelessWindowHint) #设置窗体为无边框模式
+        self.setWindowOpacity(0.5)  #设置窗体的透明度为0.5
+        self.resize(200,60) #设置界面尺寸，宽150px,高60px
+        self.setNumDigits(8) #允许显示8个字符  原因，自己数右边几个字符 【HH:MM:SS】
+        self.showTime() #初始化时间的显示
+
+
+    def showTime(self):
+        #更新时间的显示
+        time = QTime.currentTime() #获取当前时间
+        time_text = time.toString(Qt.DefaultLocaleLongDate) #获取HH:MM:SS格式的时间
+
+        #冒号闪烁
+        if self.__ShowColon == True:
+            self.__ShowColon = False
+        else:
+            time_text = time_text.replace(':',' ')
+            self.__ShowColon = True
+
+        self.display(time_text) #显示时间
+
+    def mousePressEvent(self, mouseEvent):
+        #鼠标按下事件
+        btn_code = mouseEvent.button()
+
+        if btn_code == Qt.LeftButton:
+            #如果是鼠标左键按下
+            self.__dragPosition = mouseEvent.globalPos() - self.frameGeometry().topLeft()
+            print(self.__dragPosition)
+            mouseEvent.accept()
+        elif btn_code == Qt.RightButton:
+            print("It will close")
+            self.close() #鼠标右键关闭时钟
+
+    def mouseMoveEvent(self, mouseEvent):
+        #鼠标移动事件
+        #在鼠标拖动下，移动电子时钟
+        self.move(mouseEvent.globalPos()-self.__dragPosition)
+        mouseEvent.accept()
+
+

PyQt5/LCD电子时钟/main.py

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+'''
+Created on 2018-08-09 22:39
+
+@author: Freedom
+'''
+from PyQt5.QtWidgets import QApplication
+import sys
+from DigitalClock import DigitalClock
+
+def main():
+
+    app = QApplication(sys.argv)
+    clock = DigitalClock(None)
+    clock.show()
+    sys.exit(app.exec_())
+
+if __name__ == '__main__':
+    main()

PyQt5/draw.py

@@ -0,0 +1,278 @@
+import sys
+
+from PyQt5.QtCore import *
+from PyQt5.QtGui import *
+from PyQt5.QtWidgets import *
+
+class StockDialog(QWidget):
+    def __init__(self, parent=None):
+        super(StockDialog, self).__init__(parent)
+        self.setWindowTitle("利用QPainter绘制各种图形")
+
+        mainSplitter = QSplitter(Qt.Horizontal)
+        mainSplitter.setOpaqueResize(True)
+
+        frame = QFrame(mainSplitter)
+        mainLayout = QGridLayout(frame)
+        #mainLayout.setMargin(10)
+        mainLayout.setSpacing(6)
+
+        label1=QLabel("形状：")
+        label2=QLabel("画笔线宽：")
+        label3=QLabel("画笔颜色：")
+        label4=QLabel("画笔风格：")
+        label5=QLabel("画笔顶端：")
+        label6=QLabel("画笔连接点：")
+        label7=QLabel("画刷风格：")
+        label8=QLabel("画刷颜色：")
+
+        self.shapeComboBox = QComboBox()
+        self.shapeComboBox.addItem("Line", "Line")
+        self.shapeComboBox.addItem("Rectangle", "Rectangle")
+        self.shapeComboBox.addItem('Rounded Rectangle','Rounded Rectangle')
+        self.shapeComboBox.addItem('Ellipse','Ellipse')
+        self.shapeComboBox.addItem('Pie','Pie')
+        self.shapeComboBox.addItem('Chord','Chord')
+        self.shapeComboBox.addItem('Path','Path')
+        self.shapeComboBox.addItem('Polygon','Polygon')
+        self.shapeComboBox.addItem('Polyline','Polyline')
+        self.shapeComboBox.addItem('Arc','Arc')
+        self.shapeComboBox.addItem('Points','Points')
+        self.shapeComboBox.addItem('Text','Text')
+        self.shapeComboBox.addItem('Pixmap','Pixmap')
+
+        self.widthSpinBox = QSpinBox()
+        self.widthSpinBox.setRange(0,20)
+
+        self.penColorFrame = QFrame()
+        self.penColorFrame.setAutoFillBackground(True)
+        self.penColorFrame.setPalette(QPalette(Qt.blue))
+        self.penColorPushButton = QPushButton("更改")
+
+        self.penStyleComboBox = QComboBox()
+        self.penStyleComboBox.addItem("Solid",Qt.SolidLine)
+        self.penStyleComboBox.addItem('Dash',  Qt.DashLine)
+        self.penStyleComboBox.addItem('Dot',  Qt.DotLine)
+        self.penStyleComboBox.addItem('Dash Dot',  Qt.DashDotLine)
+        self.penStyleComboBox.addItem('Dash Dot Dot',  Qt.DashDotDotLine)
+        self.penStyleComboBox.addItem('None',  Qt.NoPen)
+
+        self.penCapComboBox = QComboBox()
+        self.penCapComboBox.addItem("Flat",Qt.FlatCap)
+        self.penCapComboBox.addItem('Square', Qt.SquareCap)
+        self.penCapComboBox.addItem('Round', Qt.RoundCap)
+
+        self.penJoinComboBox = QComboBox()
+        self.penJoinComboBox.addItem("Miter",Qt.MiterJoin)
+        self.penJoinComboBox.addItem('Bebel', Qt.BevelJoin)
+        self.penJoinComboBox.addItem('Round', Qt.RoundJoin)
+
+        self.brushStyleComboBox = QComboBox()
+        self.brushStyleComboBox.addItem("Linear Gradient",Qt.LinearGradientPattern)
+        self.brushStyleComboBox.addItem('Radial Gradient', Qt.RadialGradientPattern)
+        self.brushStyleComboBox.addItem('Conical Gradient', Qt.ConicalGradientPattern)
+        self.brushStyleComboBox.addItem('Texture', Qt.TexturePattern)
+        self.brushStyleComboBox.addItem('Solid', Qt.SolidPattern)
+        self.brushStyleComboBox.addItem('Horizontal', Qt.HorPattern)
+        self.brushStyleComboBox.addItem('Vertical', Qt.VerPattern)
+        self.brushStyleComboBox.addItem('Cross', Qt.CrossPattern)
+        self.brushStyleComboBox.addItem('Backward Diagonal', Qt.BDiagPattern)
+        self.brushStyleComboBox.addItem('Forward Diagonal', Qt.FDiagPattern)
+        self.brushStyleComboBox.addItem('Diagonal Cross', Qt.DiagCrossPattern)
+        self.brushStyleComboBox.addItem('Dense 1', Qt.Dense1Pattern)
+        self.brushStyleComboBox.addItem('Dense 2', Qt.Dense2Pattern)
+        self.brushStyleComboBox.addItem('Dense 3', Qt.Dense3Pattern)
+        self.brushStyleComboBox.addItem('Dense 4', Qt.Dense4Pattern)
+        self.brushStyleComboBox.addItem('Dense 5', Qt.Dense5Pattern)
+        self.brushStyleComboBox.addItem('Dense 6', Qt.Dense6Pattern)
+        self.brushStyleComboBox.addItem('Dense 7', Qt.Dense7Pattern)
+        self.brushStyleComboBox.addItem('None', Qt.NoBrush)
+
+        self.brushColorFrame = QFrame()
+        self.brushColorFrame.setAutoFillBackground(True)
+        self.brushColorFrame.setPalette(QPalette(Qt.green))
+        self.brushColorPushButton = QPushButton("更改")
+
+        labelCol=0
+        contentCol=1
+
+        #建立布局
+        mainLayout.addWidget(label1,1,labelCol)
+        mainLayout.addWidget(self.shapeComboBox,1,contentCol)
+        mainLayout.addWidget(label2,2,labelCol)
+        mainLayout.addWidget(self.widthSpinBox,2,contentCol)
+        mainLayout.addWidget(label3,4,labelCol)
+        mainLayout.addWidget(self.penColorFrame,4,contentCol)
+        mainLayout.addWidget(self.penColorPushButton,4,3)
+        mainLayout.addWidget(label4,6,labelCol)
+        mainLayout.addWidget(self.penStyleComboBox,6,contentCol)
+        mainLayout.addWidget(label5,8,labelCol)
+        mainLayout.addWidget(self.penCapComboBox,8,contentCol)
+        mainLayout.addWidget(label6,10,labelCol)
+        mainLayout.addWidget(self.penJoinComboBox,10,contentCol)
+        mainLayout.addWidget(label7,12,labelCol)
+        mainLayout.addWidget(self.brushStyleComboBox,12,contentCol)
+        mainLayout.addWidget(label8,14,labelCol)
+        mainLayout.addWidget(self.brushColorFrame,14,contentCol)
+        mainLayout.addWidget(self.brushColorPushButton,14,3)
+        mainSplitter1 = QSplitter(Qt.Horizontal)
+        mainSplitter1.setOpaqueResize(True)
+
+        stack1 = QStackedWidget()
+        stack1.setFrameStyle(QFrame.Panel|QFrame.Raised)
+        self.area = PaintArea()
+        stack1.addWidget(self.area)
+        frame1 = QFrame(mainSplitter1)
+        mainLayout1 = QVBoxLayout(frame1)
+        #mainLayout1.setMargin(10)
+        mainLayout1.setSpacing(6)
+        mainLayout1.addWidget(stack1)
+
+        layout = QGridLayout(self)
+        layout.addWidget(mainSplitter1,0,0)
+        layout.addWidget(mainSplitter,0,1)
+        self.setLayout(layout)
+
+        #信号和槽函数
+        self.shapeComboBox.activated.connect(self.slotShape)
+        self.widthSpinBox.valueChanged.connect(self.slotPenWidth)
+        self.penColorPushButton.clicked.connect(self.slotPenColor)
+        self.penStyleComboBox.activated.connect(self.slotPenStyle)
+        self.penCapComboBox.activated.connect(self.slotPenCap)
+        self.penJoinComboBox.activated.connect(self.slotPenJoin)
+        self.brushStyleComboBox.activated.connect(self.slotBrush)
+        self.brushColorPushButton.clicked.connect(self.slotBrushColor)
+
+        self.slotShape(self.shapeComboBox.currentIndex())
+        self.slotPenWidth(self.widthSpinBox.value())
+        self.slotBrush(self.brushStyleComboBox.currentIndex())
+
+    def slotShape(self,value):
+        shape =  self.area.Shape[value]
+        self.area.setShape(shape)
+
+    def slotPenWidth(self,value):
+        color = self.penColorFrame.palette().color(QPalette.Window)
+        style = Qt.PenStyle(self.penStyleComboBox.itemData(self.penStyleComboBox.currentIndex(),Qt.UserRole))
+        cap = Qt.PenCapStyle(self.penCapComboBox.itemData(self.penCapComboBox.currentIndex(),Qt.UserRole))
+        join = Qt.PenJoinStyle(self.penJoinComboBox.itemData(self.penJoinComboBox.currentIndex(),Qt.UserRole))
+        self.area.setPen(QPen(color,value,style,cap,join))
+
+    def slotPenStyle(self,value):
+        self.slotPenWidth(value)
+
+    def slotPenCap(self,value):
+        self.slotPenWidth(value)
+
+    def slotPenJoin(self,value):
+        self.slotPenWidth(value)
+
+    def slotPenColor(self):
+        color = QColorDialog.getColor(Qt.blue)
+        self.penColorFrame.setPalette(QPalette(color))
+        self.area.setPen(QPen(color))
+
+    def slotBrushColor(self):
+        color = QColorDialog.getColor(Qt.blue)
+        self.brushColorFrame.setPalette(QPalette(color))
+        self.slotBrush(self.brushStyleComboBox.currentIndex())
+
+    def slotBrush(self,value):
+        color = self.brushColorFrame.palette().color(QPalette.Window)
+        style = Qt.BrushStyle(self.brushStyleComboBox.itemData(value,Qt.UserRole))
+
+        if(style == Qt.LinearGradientPattern):
+            linearGradient = QLinearGradient(0,0,400,400)
+            linearGradient.setColorAt(0.0,Qt.white)
+            linearGradient.setColorAt(0.2,color)
+            linearGradient.setColorAt(1.0,Qt.black)
+            self.area.setBrush(linearGradient)
+        elif style ==Qt.RadialGradientPattern:
+            radialGradient = QRadialGradient(200, 200, 80, 70, 70);
+            radialGradient.setColorAt(0.0, Qt.white)
+            radialGradient.setColorAt(0.2, Qt.green)
+            radialGradient.setColorAt(1.0, Qt.black)
+            self.area.setBrush(radialGradient)
+        elif(style == Qt.ConicalGradientPattern):
+            conicalGradient = QConicalGradient(200,200,30)
+            conicalGradient.setColorAt(0.0,Qt.white)
+            conicalGradient.setColorAt(0.2,color)
+            conicalGradient.setColorAt(1.0,Qt.black)
+            self.area.setBrush(conicalGradient)
+        elif(style == Qt.TexturePattern):
+            self.area.setBrush(QBrush(QPixmap("images/brick.png")))
+        else:
+            self.area.setBrush(QBrush(color,style))
+
+
+class PaintArea(QWidget):
+    def __init__(self):
+        super(PaintArea,self).__init__()
+        self.Shape = ["Line","Rectangle", 'Rounded Rectangle', "Ellipse", "Pie", 'Chord',
+    "Path","Polygon", "Polyline", "Arc", "Points", "Text", "Pixmap"]
+        self.setPalette(QPalette(Qt.white))
+        self.setAutoFillBackground(True)
+        self.setMinimumSize(400,400)
+        self.pen = QPen()
+        self.brush = QBrush()
+
+    def setShape(self,s):
+        self.shape = s
+        self.update()
+
+    def setPen(self,p):
+        self.pen = p
+        self.update()
+
+    def setBrush(self,b):
+        self.brush = b
+        self.update()
+
+    def paintEvent(self,QPaintEvent):
+        p = QPainter(self)
+        p.setPen(self.pen)
+        p.setBrush(self.brush)
+
+        rect = QRect(50,100,300,200)
+        points = [QPoint(150,100),QPoint(300,150),QPoint(350,250),QPoint(100,300)]
+        startAngle = 30 * 16
+        spanAngle = 120 * 16
+
+        path = QPainterPath();
+        path.addRect(150,150,100,100)
+        path.moveTo(100,100)
+        path.cubicTo(300,100,200,200,300,300)
+        path.cubicTo(100,300,200,200,100,100)
+
+        if self.shape == "Line":
+            p.drawLine(rect.topLeft(),rect.bottomRight())
+        elif self.shape == "Rectangle":
+            p.drawRect(rect)
+        elif self.shape == 'Rounded Rectangle':
+            p.drawRoundedRect(rect, 25, 25, Qt.RelativeSize)
+        elif self.shape == "Ellipse":
+            p.drawEllipse(rect)
+        elif self.shape == "Polygon":
+            p.drawPolygon(QPolygon(points),Qt.WindingFill)
+        elif self.shape == "Polyline":
+            p.drawPolyline(QPolygon(points))
+        elif self.shape == "Points":
+            p.drawPoints(QPolygon(points))
+        elif self.shape == "Pie":
+            p.drawPie(rect, startAngle, spanAngle)
+        elif self.shape == "Arc":
+            p.drawArc(rect,startAngle,spanAngle)
+        elif self.shape == "Chord":
+            p.drawChord(rect, startAngle, spanAngle)
+        elif self.shape == "Path":
+            p.drawPath(path)
+        elif self.shape == "Text":
+            p.drawText(rect,Qt.AlignCenter,"Hello Qt!")
+        elif self.shape == "Pixmap":
+            p.drawPixmap(150,150,QPixmap("images/qt-logo.png"))
+
+if __name__=='__main__':
+    app = QApplication(sys.argv)
+    form = StockDialog()
+    form.show()
+    app.exec_()