Implemented basic version

Environment:
- Python 3.4.1 (Windows x64)
- PyQt5 installed via MSI installer

Author: git-commit

TimeCalculator.py

@@ -1,10 +1,14 @@
 import sys
-from PyQt5 import QtWidgets, QtCore
+from PyQt5 import QtWidgets, QtCore, QtGui
 
 
 class TardisDiff(QtWidgets.QMainWindow):
     def __init__(self):
         super(TardisDiff, self).__init__()
+        self.diff = 0
+
+        self.clipboard = QtWidgets.QApplication.clipboard()
+        QtWidgets.QShortcut(QtGui.QKeySequence("Ctrl+Shift+C"), self, self.setClipboard)
         self.initUI()
 
     def initUI(self):
@@ -14,17 +18,22 @@ def initUI(self):
         self.formLayout = QtWidgets.QFormLayout()
         self.label_time1 = QtWidgets.QLabel(self.centralwidget)
         self.label_time2 = QtWidgets.QLabel(self.centralwidget)
+        self.label_time3 = QtWidgets.QLabel(self.centralwidget)
         self.timeEdit1 = QtWidgets.QTimeEdit(self.centralwidget)
         self.timeEdit2 = QtWidgets.QTimeEdit(self.centralwidget)
+        self.timeEdit3 = QtWidgets.QTimeEdit(self.centralwidget)
         self.label_timeDiff = QtWidgets.QLabel(self.centralwidget)
         self.label_timeDiffOut = QtWidgets.QLabel(self.centralwidget)
 
         self.label_time1.setText("Time 1:")
         self.label_time2.setText("Time 2:")
+        self.label_time3.setText("Break Time:")
         self.label_timeDiff.setText("Difference")
         self.label_timeDiffOut.setText("")
         self.timeEdit1.setTime(QtCore.QTime(8, 0))
-        self.timeEdit2.setTime(QtCore.QTime(17, 0))
+        currentTime = QtCore.QTime.currentTime()
+        currentTime.setHMS(currentTime.hour(), currentTime.minute(), 0)
+        self.timeEdit2.setTime(currentTime)
 
         #Set relations
         self.formLayout.setWidget(0, QtWidgets.QFormLayout.LabelRole,
@@ -36,8 +45,12 @@ def initUI(self):
         self.formLayout.setWidget(1, QtWidgets.QFormLayout.FieldRole,
                                   self.timeEdit2)
         self.formLayout.setWidget(2, QtWidgets.QFormLayout.LabelRole,
-                                  self.label_timeDiff)
+                                  self.label_time3)
         self.formLayout.setWidget(2, QtWidgets.QFormLayout.FieldRole,
+                                  self.timeEdit3)
+        self.formLayout.setWidget(3, QtWidgets.QFormLayout.LabelRole,
+                                  self.label_timeDiff)
+        self.formLayout.setWidget(3, QtWidgets.QFormLayout.FieldRole,
                                   self.label_timeDiffOut)
         self.gridLayout.addLayout(self.formLayout, 0, 0, 1, 1)
         self.setCentralWidget(self.centralwidget)
@@ -47,17 +60,31 @@ def initUI(self):
         #connect slots
         self.timeEdit1.timeChanged.connect(self.inputChanged)
         self.timeEdit2.timeChanged.connect(self.inputChanged)
+        self.timeEdit3.timeChanged.connect(self.inputChanged)
 
         self.setWindowTitle('TardisDiff')
         QtCore.QMetaObject.connectSlotsByName(self)
-
+        self.inputChanged()
         self.show()
 
     def inputChanged(self):
+        """
+        Checks both time inputs and the break time input to determine the difference.
+        Then calls the method to update the ui.
+        """
         time1 = self.timeEdit1.time()
         time2 = self.timeEdit2.time()
-        diff = time1.secsTo(time2)
-        self.label_timeDiffOut.setText(str(diff/3600))
+        breakTime = self.timeEdit3.time().secsTo(QtCore.QTime(0, 0))
+        self.diff = (time1.secsTo(time2) + breakTime) / 3600
+        self.diff = round(self.diff, 2)
+        self.label_timeDiffOut.setText(str(self.diff))
+
+    def setClipboard(self):
+        """Sets the current diff text to clipboard"""
+        self.clipboard.setText(str(self.diff))
+        self.statusBar().showMessage("Copied to clipboard.")
+
+
 
 
 def main():