Python QT GUI zur OpenAPI (Website Thumbnailer)

Ein guter Freund von mir war so freundlich, ein Python QT Interface zu meiner Website Thumbnailer API zu bauen.

Screenshot | Download

Hier der Sourcecode:

from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtNetwork import *

from designs.FetchDialog import Ui_FetchDialog

import os,sys



class MainClass(QDialog):
    def __init__(self, parent = None):
        super(QDialog, self).__init__()
        
        QApplication.setStyle(QStyleFactory.create('plastique'))
        
        self.layout = Ui_FetchDialog()
        self.layout.setupUi(self)
        
        self.layout.progress.hide()
        self.layout.btn_save.hide()
        self.layout.pic.hide()
        
        self.connect(self.layout.btn_save, SIGNAL("pressed()"), self.saveDownloadedImage)
        self.connect(self.layout.btn_get, SIGNAL("pressed()"), self.progressDownload)
        
    def progressDownload(self):
        self.layout.progress.setValue(0)
        self.layout.progress.show()
        
        self.networkmanager = QNetworkAccessManager();

        request = QNetworkRequest()
        url = "http://codejungle.org/api/thumb_get.php?url=%s" % self.layout.url.text()

        request.setUrl(QUrl(url))
        
        self.reply = self.networkmanager.get(request)
        self.connect(self.reply, SIGNAL("downloadProgress(qint64,qint64)"), self.updateProgressBar)
        self.connect(self.networkmanager, SIGNAL("finished(QNetworkReply *)"), self.showThumbnail)
    
    def showThumbnail(self, replyFromServer):
        if(replyFromServer.isFinished() == True):
            imageData = replyFromServer.readAll()
            
            if(imageData.size() == None):
                print "Error while reading image!"
            
            pixmap = QPixmap()
            pixmap.loadFromData(imageData)
            
            self.originalPixmap = pixmap
            
            if(pixmap.width() > 800):
                pixmap = pixmap.scaledToWidth(800)

            self.layout.pic.setPixmap(pixmap)
            self.layout.pic.setMaximumHeight(600)
            self.layout.pic.setMaximumWidth(800)
            
            
            self.layout.pic.show()
            self.layout.btn_save.show()
            
            replyFromServer.deleteLater()
            
    def saveDownloadedImage(self):
        saveTo = QFileDialog.getSaveFileNameAndFilter(parent=None, caption=QString(), directory = QString(), filter = "Images (*.png)")
              
        if(self.originalPixmap.save(saveTo[0], "png")):
            QMessageBox.information(self, "Success!", "Your image is now saved!")
            
            self.layout.pic.hide()
            self.layout.btn_save.hide()
            self.resize(530, 132)

    def updateProgressBar(self, bytesRecieved, bytesTotal):
        self.layout.progress.setMaximum(bytesTotal)
        self.layout.progress.setValue(bytesRecieved)
        
        if(self.layout.progress.value() == bytesTotal):
            self.layout.progress.hide()
    
if __name__ == "__main__":
    app = QApplication([])
    software = MainClass()
    software.show()
    app.exec_()

Known Bugs:

• Die Vorschau zeigt bei manchen Webseiten nur einen Teil an, generiert und gespeichert wird davon unabhängig das Bild der ganzen Webseite.
  
• Einige Sonderzeichen in der Adresse machen noch Probleme.

Vielen Dank an Mario (www.unite-it.at) an dieser Stelle.

Andreas