add closing shortcut, change to tableview, file processing logic

trimage.py

@@ -1,52 +1,66 @@
 import sys
 from PyQt4 import QtCore, QtGui
 from ui import Ui_trimage
-from os.path import isfile
 
 class StartQT4(QtGui.QMainWindow):
   def __init__(self, parent=None):
     QtGui.QWidget.__init__(self, parent)
     self.ui = Ui_trimage()
     self.ui.setupUi(self)
+    self.quit_shortcut = QtGui.QShortcut(QtGui.QKeySequence("Ctrl+Q"),  self); # todo use standardKey Quit.
 
     # connect signals with slots
-    QtCore.QObject.connect(self.ui.addfiles,QtCore.SIGNAL("clicked()"), self.file_dialog)
-    QtCore.QObject.connect(self.ui.recompress,QtCore.SIGNAL("clicked()"), self.recompress_files)
+    QtCore.QObject.connect(self.ui.addfiles, QtCore.SIGNAL("clicked()"), self.file_dialog)
+    QtCore.QObject.connect(self.ui.recompress, QtCore.SIGNAL("clicked()"), self.recompress_files)
+    QtCore.QObject.connect(self.quit_shortcut, QtCore.SIGNAL("activated()"), QtGui.qApp, QtCore.SLOT('quit()'))
 
     # set recompress to false
     self.ui.recompress.setEnabled(False)
 
+
   def file_dialog(self):
     fd = QtGui.QFileDialog(self)
     images = fd.getOpenFileNames(self,
-                         "Select one or more image files to compress",
-                         "", # directory
-                         "Image files (*.png *.gif *.jpg)")
-
+                                 "Select one or more image files to compress",
+                                 "", # directory
+                                 "Image files (*.png *.gif *.jpg)")
     for image in images:
-      filename = image
-      oldfilesize = QtCore.QFileInfo(image).size()
-      # send image to processing
+      self.compress_file(image)
+
 
   def enable_recompress(self):
     self.ui.recompress.setEnabled(True)
 
+
   def recompress_files(self):
     # get list of currently processed files
     # reprocess them
     # update columnview
     self.setWindowTitle("check too!")
 
-  def compress_file(self, filename):
-    # check file extention
-    # get file size
-    # run correct command line tool and get reply
-    # get new file size
-    # add to columnview
-    self.setWindowTitle("check too!")
 
-  def add_to_columnview(self):
-    # update column view with file info
+  def compress_file(self, filename):
+    oldfile = QtCore.QFileInfo(filename);
+    name = oldfile.fileName()
+    oldfilesize = oldfile.size()
+
+    if name.endsWith("jpg"):
+      self.jpg = True
+      # run jpegoptim
+    else:
+      self.jpg = False
+      #run optipng
+
+    newfile = oldfile
+    newfilesize = newfile.size()
+    ratio = 100 - (newfilesize / oldfilesize * 100)
+    ratio_str = "%.1f%%" % ratio
+
+    # get new file size
+    # add to columnview name, newsize, ratio_str,
+
+  def add_to_tableview(self, filename, filesize, ratio):
+    # update table view with file info
     self.setWindowTitle("check too!")
 
 if __name__ == "__main__":