学步园

环境 Python 3.3 ，PySide

IDE PyCharm

最近，有些同学喊我把Qt的一些例子改写成Python的，我刚好有点点时间就尝试一下，书是linux窗口程序设计---Qt4精彩实例分析，由于前30列子都有人搞了，我就从32开始

先贴代码

__author__ = '375159507@qq.com'
try:
    from PySide import QtCore
    from PySide import QtGui
except ImportError:
    from PyQt4 import QtCore
    from PyQt4 import QtGui

class PainArea(QtGui.QWidget):
    def __init__(self):
        super(PainArea,self).__init__()
        self.setPalette(QtCore.Qt.white)
        self.setAutoFillBackground(True)
        self.setMinimumSize(400,400)

        self.path = QtGui.QPainterPath()
        self.path.addRect(150,150,100,100)
        self.path.moveTo(100,100)
        self.path.cubicTo(300,100,200,200,300,300)
        self.path.cubicTo(100,300,200,200,100,100)

        self.width = 1
        self.pencolor = QtCore.Qt.red
        self.brushcolor = QtCore.Qt.blue
        self.rule = QtCore.Qt.OddEvenFill


    def setFillRule(self,newrule):
            self.rule = QtCore.Qt.FillRule(newrule)
            self.update()

    def setPenWidth(self,newwidth):
            self.width = newwidth
            self.update()

    def setPenColor(self,newcolor):
            self.pencolor = newcolor
            self.update()

    def setBrushColor(self,newcolor):
            self.brushcolor = newcolor
            self.update()

    def paintEvent(self,e):
            p = QtGui.QPainter(self)
            self.path.setFillRule(self.rule)
            pen = QtGui.QPen()
            pen.setColor(self.pencolor)
            pen.setWidth(self.width)
            p.setPen(pen)
            p.setBrush(self.brushcolor)

            p.drawPath(self.path)


class MainWindow(QtGui.QWidget):
    def __init__(self):
        super(MainWindow,self).__init__()
        self.area = PainArea()
        self.createCtrlWidget()
        self.mainlayout()
    def slotpenColor(self):
        newcolor = QtGui.QColorDialog.getColor()
        if newcolor:
            self.penColorFrame.setPalette(newcolor)
            self.area.setPenColor(newcolor)
        else:
            newcolor = QtCore.Qt.blue
            self.area.setPenColor(newcolor)
    def slotbrushColor(self):
        newcolor = QtGui.QColorDialog.getColor()
        if newcolor:
            self.brushColorFrame.setPalette(newcolor)
            self.area.setBrushColor(newcolor)
        else:
            newcolor = QtCore.Qt.blue
            self.area.setBrushColor(newcolor)

    def slotFill(self,indx):
        activedIndx = indx
        if activedIndx == -1:
            return
        setRule = self.fillRuleComBox.itemData(activedIndx)
        self.area.setFillRule(setRule)
    def slotPenWidth(self,width):
        newwidth = width
        if newwidth:
            self.area.setPenWidth(newwidth)
        else:
            return

    def createCtrlWidget(self):
        self.penColorText = QtGui.QLabel("画笔颜色 :")
        self.penColorFrame = QtGui.QFrame()
        self.penColorFrame.setAutoFillBackground(True)
        self.penColorFrame.setPalette(QtGui.QPalette(QtCore.Qt.red))
        self.penColorPushButton = QtGui.QPushButton()
        self.penColorPushButton.setText("更改")
        self.penColorPushButton.clicked.connect(self.slotpenColor)

        self.brushColorText = QtGui.QLabel("画刷颜色 :")
        self.brushColorFrame = QtGui.QFrame()
        self.brushColorFrame.setAutoFillBackground(True)
        self.brushColorFrame.setPalette(QtGui.QPalette(QtCore.Qt.blue))
        self.brushColorPushButton = QtGui.QPushButton("更改")
        self.brushColorPushButton.clicked.connect(self.slotbrushColor)
        self.fillRuleText = QtGui.QLabel("选择填充方式 :")
        self.fillRuleComBox = QtGui.QComboBox()
        self.fillRuleComBox.addItem("OldEven",QtCore.Qt.OddEvenFill)
        self.fillRuleComBox.addItem("Winding",QtCore.Qt.WindingFill)
        self.fillRuleComBox.currentIndexChanged.connect(self.slotFill)

        self.penWidthText = QtGui.QLabel("画笔宽度 :")
        self.penwidthspinBox = QtGui.QSpinBox()
        self.penwidthspinBox.setRange(1,10)
        self.penwidthslider = QtGui.QSlider(QtCore.Qt.Horizontal)
        self.penwidthslider.setRange(1,10)
        self.penwidthspinBox.valueChanged.connect(self.penwidthslider.setValue)
        self.penwidthslider.valueChanged.connect(self.penwidthspinBox.setValue)
        self.penwidthslider.valueChanged.connect(self.slotPenWidth)


    def mainlayout(self):
        self.rightLayout = QtGui.QGridLayout()
        self.rightLayout.addWidget(self.penColorText,0,0)
        self.rightLayout.addWidget(self.penColorFrame,0,1)
        self.rightLayout.addWidget(self.penColorPushButton,0,2)
        self.rightLayout.addWidget(self.brushColorText,1,0)
        self.rightLayout.addWidget(self.brushColorFrame,1,1)
        self.rightLayout.addWidget(self.brushColorPushButton,1,2)
        self.rightLayout.addWidget(self.fillRuleText,2,0)
        self.rightLayout.addWidget(self.fillRuleComBox,2,1)
        self.rightLayout.addWidget(self.penWidthText,3,0)
        self.rightLayout.addWidget(self.penwidthspinBox,3,1)
        self.rightLayout.addWidget(self.penwidthslider,3,2)
        self.rightLayout.rowStretch(10)

        self.leftLayout = QtGui.QHBoxLayout()
        self.leftLayout.addWidget(self.area)


        self.mainLayout = QtGui.QHBoxLayout()
        self.mainLayout.addLayout(self.leftLayout)
        self.mainLayout.addLayout(self.rightLayout)

        self.setLayout(self.mainLayout)


if __name__ == "__main__":
    import  sys
    app = QtGui.QApplication(sys.argv)
    mainwindow = MainWindow()
    mainwindow.show()
    sys.exit(app.exec_())

程序运行的效果

我现在在一个普通211大学读研，所以没有什么太大时间，我尽量一个星期一个例子，希望大家理解！