gggwfn1982

python code for pyqt4 development

# -*- coding: utf-8 -*-
 
from PyQt4.QtGui import * 
from PyQt4.QtCore import * 
import sys 
 
QTextCodec.setCodecForTr(QTextCodec.codecForName("utf8")) 
 
class MainWindow(QMainWindow): 
    def __init__(self,parent=None): 
        super(MainWindow,self).__init__(parent) 
        f=QFont("ZYSong18030",12) 
        self.setFont(f) 
         
        self.setWindowTitle("Image Processor") 
        self.imageLabel=QLabel() 
        self.imageLabel.setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)  
        self.imageLabel.setScaledContents(True) 
         
        self.setCentralWidget(self.imageLabel) 
        self.image=QImage() 
        if self.image.load("image/cc.png"): 
                    self.imageLabel.setPixmap(QPixmap.fromImage(self.image)) 
                    self.resize(self.image.width(),self.image.height())         
         
        self.createActions() 
        self.createMenus() 
        self.createToolBars() 
         
    def createActions(self): 
        self.zoominAction=QAction(QIcon("image/zoomin.png"),self.tr("放大"),self) 
        self.zoominAction.setShortcut("Ctrl+P") 
        self.zoominAction.setStatusTip(self.tr("放大")) 
        self.connect(self.zoominAction,SIGNAL("triggered()"),self.slotZoomin) 
         
        self.deflateAction=QAction(QIcon("image/deflate.png"),self.tr("缩小"),self) 
        self.deflateAction.setShortcut("Ctrl+A") 
        self.deflateAction.setStatusTip(self.tr("缩小")) 
        self.connect(self.deflateAction,SIGNAL("triggered()"),self.slotDeflate) 
         
        self.circumgyrate=QAction(QIcon("image/circumgyrate.png"),self.tr("旋转"),self) 
        self.circumgyrate.setShortcut("Ctrl+B") 
        self.circumgyrate.setStatusTip(self.tr("旋转")) 
        self.connect(self.circumgyrate,SIGNAL("triggered()"),self.slotCircumgyrate) 
         
    def createMenus(self): 
        PrintMenu=self.menuBar().addMenu(self.tr("缩放")) 
        PrintMenu.addAction(self.zoominAction) 
        PrintMenu.addAction(self.deflateAction) 
        circumgyrateMenu=self.menuBar().addMenu(self.tr("旋转")) 
        circumgyrateMenu.addAction(self.circumgyrate) 
         
    def createToolBars(self): 
        fileToolBar=self.addToolBar("Print") 
        fileToolBar.addAction(self.zoominAction) 
        fileToolBar.addAction(self.deflateAction) 
        fileToolBar.addAction(self.circumgyrate) 
     
    def slotZoomin(self): 
        if self.image.isNull(): 
            return 
        martix = QMatrix() 
        martix.scale(2,2) 
        self.image=self.image.transformed(martix); 
        self.imageLabel.setPixmap(QPixmap.fromImage(self.image)) 
        self.resize(self.image.width(),self.image.height())  
     
    def slotDeflate(self): 
        if self.image.isNull(): 
            return 
        martix = QMatrix() 
        martix.scale(0.5,0.5) 
        self.image=self.image.transformed(martix); 
        self.imageLabel.setPixmap(QPixmap.fromImage(self.image)) 
        self.resize(self.image.width(),self.image.height())  
     
    def slotCircumgyrate(self): 
        if self.image.isNull(): 
            return 
        martix = QMatrix() 
        martix.rotate(90) 
        self.image=self.image.transformed(martix); 
        self.imageLabel.setPixmap(QPixmap.fromImage(self.image)) 
        self.resize(self.image.width(),self.image.height())  
                 
app=QApplication(sys.argv) 
window=MainWindow() 
window.show() 
app.exec_()