mbed_beat_new.py

00001 #*****************************************************************#
00002 #                                                                 #
00003 #   File: beatfactorygui.py                                       #
00004 #   Author: Ethan Takla                                           #
00005 #   Date Created: 10/6/14                                         #
00006 #   Description: A python GUI for graphically creating songs on   #
00007 #                the FDRM-KL46z                                       #
00008 #                                                                 #
00009 #*****************************************************************#
00010 # Last edit: Matthew Sessions
00011 
00012 #System Imports
00013 import sys
00014 
00015 #Serial Imports
00016 import serial
00017 from serial.tools import list_ports
00018 
00019 #Signal Imports
00020 import signal
00021 
00022 #Sound Imports
00023 
00024 # Uncomment for sound
00025 #import winsound
00026 
00027 #Threading imports
00028 import thread
00029 
00030 #PyQt Imports
00031 from PyQt4.QtGui import QApplication, QDialog, QMainWindow, QFileDialog
00032 from PyQt4 import QtCore, QtGui
00033 
00034 
00035 try:
00036     _fromUtf8 = QtCore.QString.fromUtf8
00037 except AttributeError:
00038     def _fromUtf8(s):
00039         return s
00040 
00041 #Setup text encoding
00042 try:
00043     _encoding = QtGui.QApplication.UnicodeUTF8
00044     def _translate(context, text, disambig):
00045         return QtGui.QApplication.translate(context, text, disambig, _encoding)
00046 except AttributeError:
00047     def _translate(context, text, disambig):
00048         return QtGui.QApplication.translate(context, text, disambig)
00049 
00050 #Create Note Classs
00051 class Note:
00052     def __init__( self, note ):
00053         self.note = note
00054 
00055 #Main Window Class
00056 class Ui_MainWindow(QtGui.QMainWindow):
00057 
00058     def initializeUI(self, MainWindow):
00059 
00060         #Initialize main window properties
00061         MainWindow.setObjectName(_fromUtf8("FDRM-KL46z Beat Factory"))
00062         MainWindow.resize(1200, 848)
00063         MainWindow.setMaximumSize(QtCore.QSize(16777215, 848))
00064 
00065         #Create central widget
00066         self.centralwidget = QtGui.QWidget(MainWindow)
00067         self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
00068 
00069         #Create gridLayout_2
00070         self.gridLayout_2 = QtGui.QGridLayout(self.centralwidget)
00071         self.gridLayout_2.setObjectName(_fromUtf8("gridLayout_2"))
00072 
00073         #Create and format a graphics view widget
00074         self.graphicsView = QtGui.QGraphicsView(self.centralwidget)
00075         self.graphicsView.setMinimumSize(QtCore.QSize(300, 120))
00076         self.graphicsView.setMaximumSize(QtCore.QSize(300, 120))
00077         self.graphicsView.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
00078         self.graphicsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
00079 
00080         #Set the graphics view image
00081         self.scene = QtGui.QGraphicsScene();
00082         self.pixmap = QtGui.QPixmap( "TekBots.png" )
00083         self.scene.addPixmap(self.pixmap)
00084         self.graphicsView.setScene( self.scene )
00085         self.graphicsView.setObjectName(_fromUtf8("graphicsView"))
00086 
00087         #Add the graphics view to gridLayout_2
00088         self.gridLayout_2.addWidget(self.graphicsView, 0, 1, 1, 1)
00089 
00090         #Create and format verticalLayout_2
00091         self.verticalLayout_2 = QtGui.QVBoxLayout()
00092         self.verticalLayout_2.setSpacing(7)
00093         self.verticalLayout_2.setSizeConstraint(QtGui.QLayout.SetNoConstraint)
00094         self.verticalLayout_2.setContentsMargins(-1, -1, -1, 0)
00095         self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
00096 
00097         #Create a table view for beat editing
00098         self.tableView = QtGui.QTableWidget(self.centralwidget)
00099 
00100         #Add the table view to verticalLayout2
00101         self.verticalLayout_2.addWidget(self.tableView)
00102 
00103         #Add verticalLayout2 to gridLayout2
00104         self.gridLayout_2.addLayout(self.verticalLayout_2, 0, 0, 7, 1)
00105 
00106         #Create gridLayout
00107         self.gridLayout = QtGui.QGridLayout()
00108         self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
00109 
00110         #Create and format pushButton, add them to gridLayout
00111         self.pushButton = QtGui.QPushButton(self.centralwidget)
00112         self.pushButton.setObjectName(_fromUtf8("pushButton"))
00113         self.pushButton.setStyleSheet("color: black; background-color: red;")
00114         self.gridLayout.addWidget(self.pushButton, 0, 2, 1, 1)
00115         self.pushButton_2 = QtGui.QPushButton(self.centralwidget)
00116         self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
00117         self.pushButton_2.setEnabled( False )
00118         self.gridLayout.addWidget(self.pushButton_2, 3, 0, 1, 1)
00119         self.pushButton_3 = QtGui.QPushButton(self.centralwidget)
00120         self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
00121         self.pushButton_3.setEnabled( False )
00122         self.gridLayout.addWidget(self.pushButton_3, 3, 1, 1, 1)
00123 
00124         #Create labels and add them to gridLayout
00125         self.label = QtGui.QLabel(self.centralwidget)
00126         self.label.setObjectName(_fromUtf8("label"))
00127         self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
00128         self.label2 = QtGui.QLabel(self.centralwidget)
00129         self.label2.setObjectName(_fromUtf8("label2"))
00130         self.gridLayout.addWidget(self.label2, 1, 0, 1, 1)
00131         self.label3 = QtGui.QLabel(self.centralwidget)
00132         self.label3.setObjectName(_fromUtf8("label3"))
00133         self.gridLayout.addWidget(self.label3, 2, 0, 1, 1)
00134 
00135         #Create comboBoxs and add them to gridLayout
00136         self.comboBox = QtGui.QComboBox(self.centralwidget)
00137         self.comboBox.setObjectName(_fromUtf8("comboBox"))
00138         self.gridLayout.addWidget(self.comboBox, 0, 1, 1, 1)
00139         self.comboBox2 = QtGui.QComboBox(self.centralwidget)
00140         self.comboBox2.setObjectName(_fromUtf8("comboBox2"))
00141         self.gridLayout.addWidget(self.comboBox2, 1, 1, 1, 1)
00142         self.comboBox3 = QtGui.QComboBox(self.centralwidget)
00143         self.comboBox3.setObjectName(_fromUtf8("comboBox3"))
00144         self.gridLayout.addWidget(self.comboBox3, 2, 1, 1, 1)
00145         
00146         #Add gridLayout to gridLayout_2 and format
00147         self.gridLayout_2.addLayout(self.gridLayout, 1, 1, 1, 1)
00148         MainWindow.setCentralWidget(self.centralwidget)
00149 
00150         #Create and configure the menu bar
00151         self.menubar = QtGui.QMenuBar(MainWindow)
00152         self.menubar.setGeometry(QtCore.QRect(0, 0, 972, 26))
00153         self.menubar.setObjectName(_fromUtf8("menubar"))
00154         self.menuFile = QtGui.QMenu(self.menubar)
00155         self.menuFile.setObjectName(_fromUtf8("menuFile"))
00156         self.menuHelp = QtGui.QMenu(self.menubar)
00157         self.menuHelp.setObjectName(_fromUtf8("menuHelp"))
00158         MainWindow.setMenuBar(self.menubar)
00159         self.statusbar = QtGui.QStatusBar(MainWindow)
00160         self.statusbar.setObjectName(_fromUtf8("statusbar"))
00161         MainWindow.setStatusBar(self.statusbar)
00162 
00163         #Create a QAction for the Load and Save songs, and About button
00164         self.actionLoad_Song = QtGui.QAction(MainWindow)
00165         self.actionLoad_Song.setObjectName(_fromUtf8("actionLoad_Song"))
00166         self.actionSave_Song = QtGui.QAction(MainWindow)
00167         self.actionSave_Song.setObjectName(_fromUtf8("actionSave_Song"))
00168         self.actionAbout = QtGui.QAction(MainWindow)
00169         self.actionAbout.setObjectName(_fromUtf8("actionAbout"))
00170         self.menuFile.addAction(self.actionLoad_Song)
00171         self.menuFile.addAction(self.actionSave_Song)
00172         self.menuHelp.addAction(self.actionAbout)
00173         self.menubar.addAction(self.menuFile.menuAction())
00174         self.menubar.addAction(self.menuHelp.menuAction())
00175 
00176         #Set text of all UI elements
00177         self.retranslateUI(MainWindow)
00178 
00179         #Connect Slots
00180         QtCore.QMetaObject.connectSlotsByName(MainWindow)
00181 
00182         #Populate comboBox3 and configure tempo
00183         self.comboBox3.clear()
00184         self.comboBox3.addItems(self.tempoValues)
00185         self.comboBox3.setCurrentIndex( 14 )
00186         self.tempo = 120
00187 
00188         #Populate Combobox 2
00189         self.comboBox2.clear()
00190         self.comboBox2.addItems(self.noteNumberValues)
00191 
00192     def retranslateUI(self, MainWindow):
00193 
00194         #Set the text of the UI elements
00195         MainWindow.setWindowTitle(_translate("FDRM-KL46z Beat Factory", "FDRM-KL46z Beat Factory", None))
00196         self.pushButton.setText(_translate("FDRM-KL46z Beat Factory", "Scan", None))
00197         self.pushButton_2.setText(_translate("FDRM-KL46z Beat Factory", "Play", None))
00198         self.pushButton_3.setText(_translate("FDRM-KL46z Beat Factory", "Clear", None))
00199         self.label.setText(_translate("FDRM-KL46z Beat Factory", "COM Port:", None))
00200         self.label2.setText(_translate("FDRM-KL46z Beat Factory", "Number of Notes:", None))
00201         self.label3.setText(_translate("FDRM-KL46z Beat Factory", "Tempo:", None))
00202         self.menuFile.setTitle(_translate("FDRM-KL46z Beat Factory", "File", None))
00203         self.menuHelp.setTitle(_translate("FDRM-KL46z Beat Factory", "Help", None))
00204         self.actionLoad_Song.setText(_translate("FDRM-KL46z Beat Factory", "Load Song", None))
00205         self.actionSave_Song.setText(_translate("FDRM-KL46z Beat Factory", "Save Song", None))
00206         self.actionAbout.setText(_translate("FDRM-KL46z Beat Factory", "About", None))
00207 
00208     def initializeVariables( self ):
00209 
00210         #Define cell selected/unselected variables
00211         self.cellSelected = 1
00212         self.cellUnselected = 0
00213 
00214         #Set initial comm. state
00215         self.comButtonState = "Scan"
00216 
00217         #Create the song array
00218         self.song_array = []    # delete all note elements
00219                 
00220         #Set table row and column count variables
00221         self.tableViewRowCount = 24
00222         self.tableViewColumnCount = 16
00223         self.selectedCells = [[0 for x in xrange(self.tableViewColumnCount)] for x in xrange(self.tableViewRowCount)]
00224         self.noteFrequencies = [ 831, 784, 740, 698, 659, 622, 587, 554, 523, 494, 466, 440, 415, 392, 370, 349, 330, 311, 294, 277, 261, 247, 233, 220 ]
00225 
00226         #Define tempo values
00227         self.tempoValues = [ "50", "55", "60", "65", "70", "75", "80", "85", "90", "95", "100", "105", "110", "115", "120", "125", "130",
00228                              "135", "140", "145", "150", "155", "160", "165", "170", "175", "180", "185", "190", "195", "200", "205",
00229                              "210", "215", "220", "225", "230", "235", "240"]
00230 
00231         #Define note number values
00232         self.noteNumberValues = [ "16", "32", "48", "64" ]
00233 
00234         #Define serial ports that are to be 'detected' 
00235         self.ports = [ "Select",
00236                        'COM1', 'COM2', 'COM3', 'COM4', 'COM5', 'COM6', 'COM7', 'COM8', 'COM9', 'COM10',
00237                        'COM11', 'COM12', 'COM13', 'COM14', 'COM15', 'COM16', 'COM17', 'COM18',
00238                        'COM19', 'COM20', 'COM21', '/dev/ttyACM0', '/dev/ttyACM1', '/dev/ttyACM2', '/dev/ttyACM3']
00239         
00240 
00241         
00242     def initializeTable( self ):
00243         
00244         #Initialize beat table columns and rows
00245         self.tableView.setColumnCount(self.tableViewColumnCount)
00246         self.tableView.setRowCount(self.tableViewRowCount)
00247 
00248         #Initialize beat table rows for notes
00249         self.verticalHeaderLabels = [ "G#", "G", "F#", "F", "E", "D#", "D", "C#", "C(High)", "B", "A#", "A", "G#", "G", "F#", "F", "E", "D#", "D", "C#", "C (Middle)", "B", "A#", "A" ]
00250 
00251         #Label vertical headers on table
00252         self.tableView.setVerticalHeaderLabels( self.verticalHeaderLabels )
00253         
00254         #Make table ready only by creating items widgets in each cell and disabling them
00255         for i in xrange(self.tableView.rowCount()):
00256             for j in xrange(self.tableView.columnCount()):  
00257                 self.tableView.setItem(i,j, QtGui.QTableWidgetItem())
00258                 self.tableView.item(i,j).setFlags(QtCore.Qt.ItemIsEnabled)
00259         
00260     def initializeSerial( self ):
00261 
00262         #Configure the serial port for 8-N-1, baudrate doesn't matter since the FDRM-KL46z is running a VCP
00263         self.ser = serial.Serial()
00264         self.ser.timeout = 1000
00265         self.ser.baudrate = 9600
00266         
00267     def highlightColumn( self, column ):
00268         
00269         #Go through the unselected cells in each row and highlight them
00270         for i in xrange(self.tableView.rowCount()):
00271             if self.selectedCells[i][column] == self.cellUnselected:
00272                 self.tableView.item(i, column).setBackground(QtGui.QColor(255,179,0))
00273                 
00274     def unhighlightColumn( self, column ):
00275 
00276         #Go through the unselected cells in each row and unhighlight them
00277         for i in xrange(self.tableView.rowCount()):
00278             if self.selectedCells[i][column] == self.cellUnselected:
00279                 self.tableView.item(i, column).setBackground(QtGui.QColor(255,255,255))
00280                 
00281     def handlePlayButton( self ):
00282 
00283         #Disable play and clear buttons while song is playing
00284         self.pushButton_2.setEnabled( False )
00285         self.pushButton_3.setEnabled( False )
00286 
00287         #Empty song array
00288         del self.song_array[:]
00289         emptyCells = 0
00290 
00291         
00292         for j in xrange(self.tableView.columnCount()):
00293             for i in xrange(self.tableView.rowCount()):
00294 
00295                 #If a cell is selected, add the corresponding note to the song array
00296                 if self.selectedCells[i][j] == self.cellSelected:
00297                     
00298                     #Store the note index
00299                     note_name = i # note name is letter A-G 
00300             
00301                     # create Note class and populate
00302                     note = Note( note_name )
00303                     self.song_array.append( note )                  # add Note to array of Notes        
00304                 else:
00305                     emptyCells += 1
00306 
00307                 #If an empty column is found, add a rest (index 24) to the song array
00308                 if emptyCells == self.tableView.rowCount():
00309                     
00310                     # store user-inputted note into a Note class
00311                     note_name = 24 # note name is letter A-G 
00312             
00313                     # create Note class and populate
00314                     note = Note( note_name )
00315                     self.song_array.append( note )                  # add Note to array of Notes
00316 
00317             emptyCells = 0
00318                 
00319         
00320         try:
00321             self.ser.open()
00322         except:
00323             self.serialScan()
00324             return
00325         self.ser.write( "$NEW\n" )                                  #Send new song packet
00326         self.ser.write( "$T" )                                      #Send Tempo Packet
00327         self.ser.write( "%d" % (self.tempo*4) )       
00328         self.ser.write( '\n' )                          
00329         self.ser.write( "$L" )                                      #Send song length packet
00330         self.ser.write( "%d" % (self.tableView.columnCount() ) )   
00331         self.ser.write( '\n' )                    
00332         for i in range(self.tableView.columnCount()):               
00333             self.ser.write( "$S" )                                  #Send note data packet
00334             self.ser.write( "%d" % (self.song_array[i].note) )
00335             self.ser.write( '\n' )                  
00336         self.ser.write( "$PLAY\n" )                                 #Send play song packet
00337         
00338         data = 0
00339         
00340         while 1:
00341 
00342             #Wait for serial data to be available
00343             if self.ser.inWaiting() != 0:
00344 
00345                 #Read a line of data
00346                 data = int(self.ser.readline())
00347 
00348                 #Exit the while loop if a termination character (0xFF) is received
00349                 if data == 255:
00350                     break;
00351 
00352                 #Highlight the column specified by the data
00353                 self.highlightColumn( data )
00354 
00355                 #Scroll to the column so we can see it
00356                 self.tableView.scrollToItem( self.tableView.item(0,data) )
00357 
00358                 #Unhighlight previous column
00359                 if data > 0:
00360                     self.unhighlightColumn( data - 1 )
00361 
00362                 #Force a GUI uptdate
00363                 QApplication.processEvents()
00364                 
00365         self.unhighlightColumn( self.tableView.columnCount()-1 )
00366         self.ser.close()
00367 
00368         #Enable play and clear buttons after song is song playing
00369         self.pushButton_2.setEnabled( True )
00370         self.pushButton_3.setEnabled( True )
00371                 
00372     def handleClearButton( self ):
00373 
00374         #Go through each cell, make it white, and set it as unselected
00375         for i in xrange(self.tableView.rowCount()):
00376             for j in xrange(self.tableView.columnCount()):  
00377                 self.tableView.item(i, j).setBackground(QtGui.QColor(255,255,255))
00378                 self.selectedCells[i][j] = self.cellUnselected
00379 
00380     def serialScan( self ):
00381 
00382         #Populate the combobox with ports
00383         self.comboBox.clear()
00384         self.comboBox.addItems( self.ports )
00385 
00386         #Go through each port name to see if it exists
00387         for i in self.ports[1:]:
00388             self.ser.port = i
00389             try:
00390                 self.ser.open()
00391             except Exception, e:
00392 
00393                 #If the port name does not exist, remove it from the combobox
00394                 remove_port = self.comboBox.findText( self.ser.port )
00395                 self.comboBox.removeItem( remove_port )
00396             self.ser.close()
00397 
00398     def handleComButton( self ):
00399 
00400         #If the comm. button is is Scan mode, scan the serial ports
00401         if self.comButtonState == "Scan":
00402 
00403             self.serialScan()
00404 
00405             if self.comboBox.count() > 1:
00406 
00407                 #If we have detected a serial port, change the button name to "connect" and change color
00408                 self.pushButton.setText(_translate("MainWindow", "Connect", None))
00409                 self.pushButton.setStyleSheet("color: black; background-color: yellow;")
00410                 self.comButtonState = "Connect"
00411 
00412                 #Enable the play and clear buttons
00413                 self.pushButton_2.setEnabled( True )
00414                 self.pushButton_3.setEnabled( True )
00415             else:
00416 
00417                 #Create a message box if there was no COM port detected
00418                 QtGui.QMessageBox.information(self, 'Error',"A serial device was not detected, please ensure that it is plugged into your computer.")
00419                 
00420         elif self.comButtonState == "Connect":
00421 
00422             #Create a new port
00423             self.ser.close()
00424             new_port = str(self.comboBox.currentText())
00425             self.ser.port = new_port
00426             
00427             try:
00428                 if self.comboBox.currentText() != "Select":
00429                     self.ser.open()
00430                 else:
00431                     QtGui.QMessageBox.information(self, 'Error',"Please Select a COM port.")
00432                     
00433             except Exception ,e:
00434 
00435                 #If we can't connect, reset the button state to "scan"
00436                 self.pushButton.setText(_translate("MainWindow", "Disconnect", None))
00437                 self.pushButton.setStyleSheet("color: black; background-color: red;")
00438                 self.comButtonState = "Scan"
00439             if self.ser.isOpen():
00440 
00441                 #If we can open the serial port, change the button name to "disconnect" and change color
00442                 self.pushButton.setText(_translate("MainWindow", "Disconnect", None))
00443                 self.pushButton.setStyleSheet("color: black; background-color: green;")
00444                 self.comButtonState = "Disconnect"
00445                 self.ser.close()
00446                 
00447         elif self.comButtonState == "Disconnect":
00448 
00449             #Change the button text to "Scan" once disconnect it pressed, and change color
00450             self.pushButton.setText(_translate("MainWindow", "Scan", None))
00451             self.pushButton.setStyleSheet("color: black; background-color: red;")
00452             self.comButtonState = "Scan"
00453 
00454             #Disable play and clear buttons
00455             self.pushButton_2.setEnabled( False )
00456             self.pushButton_3.setEnabled( False )
00457 
00458     def beepThread( self, tone ):
00459             print "No sound"
00460             #Produce a tone using winsound
00461             
00462             # Uncomment below for sound
00463             #winsound.Beep(tone, 150)
00464             
00465     def handleCellClicked(self, row, column):
00466 
00467         self.noteExists = False
00468 
00469         #Check to see if any notes are already selected in the row
00470         for i in xrange(self.tableView.rowCount()):
00471             if self.selectedCells[i][column] == self.cellSelected:
00472                 self.noteExists = True
00473                 
00474             
00475         #If a cell is clicked and unselected, change it's color, mark it as selected, and start the tone thread
00476         if self.selectedCells[row][column] == self.cellUnselected:
00477 
00478             #Do not select cell if a note already exists in the column
00479             if self.noteExists == False:
00480                 
00481                 self.tableView.item(row, column).setBackground(QtGui.QColor(100,100,150))
00482                 self.selectedCells[row][column] = self.cellSelected
00483                 thread.start_new_thread(self.beepThread, (self.noteFrequencies[row],))
00484 
00485         #If a cell is clicked and selected, change it's color and mark it as unselected
00486         else:
00487             self.tableView.item(row, column).setBackground(QtGui.QColor(255,255,255))
00488             self.selectedCells[row][column] = self.cellUnselected
00489 
00490     def handleSaveSongButton( self ):
00491 
00492         #Create a save file dialog
00493         self.fileName = QFileDialog.getSaveFileName(self,"Save File",
00494                             "",
00495                             "FDRM-KL46z Song (*.song)");
00496         try:
00497             #Create a file with the filename provided from the user
00498             self.f = open(self.fileName, 'w')
00499 
00500             #Write the note number index
00501             self.f.write( str(self.comboBox2.currentIndex()) + '\n' )
00502     
00503             #Write each note as a coordinate on a newline
00504             for i in xrange(self.tableView.rowCount()):
00505                 for j in xrange(self.tableView.columnCount()):  
00506                     if self.selectedCells[i][j] == self.cellSelected:
00507                         self.f.write( str(i)+ ',' + str(j) + '\n')
00508 
00509             #Write the end of song marker
00510             self.f.write( "end song")
00511             self.f.close()
00512 
00513         except Exception ,e:
00514             print(e)
00515             
00516     def handleLoadSongButton( self ):
00517 
00518         #Create and open file dialog
00519         self.fileName = QFileDialog.getOpenFileName(self,"Open File",
00520                             "",
00521                             "FDRM-KL46z Song (*.song)");
00522 
00523         try:
00524             #Open the user defined file for reading
00525             self.f = open(self.fileName, 'r')
00526 
00527             #cleat all notes from tableview
00528             self.handleClearButton();
00529 
00530             #Read index number and change the note number combo box
00531             index = int(self.f.readline())
00532             self.handleNoteNumberChange(index)
00533             self.comboBox2.setCurrentIndex(index)
00534 
00535             #Read the first cell location
00536             self.cellID = self.f.readline()
00537 
00538             #Continue reading cell ID's and activate corresponding cells
00539             while self.cellID != "end song":
00540                 i = 0
00541                 columnString = ""
00542                 rowString = ""
00543 
00544                 #Wait until we get a comma
00545                 while self.cellID[i] != ',':
00546                     rowString += self.cellID[i]
00547                     i += 1
00548 
00549                 #Go to the next data point after a newline character
00550                 while self.cellID[i+1] != '\n':
00551                     columnString += self.cellID[i+1]
00552                     i += 1
00553 
00554                 #Update the table view
00555                 self.tableView.item(int(rowString), int(columnString)).setBackground(QtGui.QColor(100,100,150))
00556                 self.selectedCells[int(rowString)][int(columnString)] = self.cellSelected
00557                 self.cellID = self.f.readline()
00558         except Exception ,e:
00559             print(e)
00560 
00561     def handleNoteNumberChange( self, index ):
00562 
00563         #Change the number of columns in the table if the song length changes 
00564         self.tableViewColumnCount = int(self.noteNumberValues[int(index)])
00565         self.selectedCells = [[0 for x in xrange(self.tableViewColumnCount)] for x in xrange(self.tableViewRowCount)]
00566 
00567         #Reset the table
00568         self.initializeTable()
00569         self.handleClearButton()
00570 
00571     def handleTempoChange( self, index ):
00572 
00573         #Change necesarry variables if the tempo is chaged
00574         self.tempo = int(self.tempoValues[int(index)])
00575 
00576     def handleAboutButton( self ):
00577 
00578         #Opens the about form if the about button is pressed
00579         self.dialog = QtGui.QDialog(self)
00580         self.dialog.ui = aboutForm()
00581         self.dialog.ui.setupUi(self.dialog)
00582         self.dialog.setAttribute(QtCore.Qt.WA_DeleteOnClose)
00583         self.dialog.show()
00584         
00585         
00586     def bind_events( self ):
00587         #Bind events to handler functions      
00588         self.pushButton.clicked.connect( self.handleComButton )                         
00589         self.tableView.cellClicked.connect( self.handleCellClicked )
00590         self.pushButton_3.clicked.connect( self.handleClearButton )
00591         self.actionSave_Song.triggered.connect( self.handleSaveSongButton )
00592         self.actionLoad_Song.triggered.connect( self.handleLoadSongButton )
00593         self.pushButton_2.clicked.connect( self.handlePlayButton )
00594         self.comboBox2.currentIndexChanged.connect( self.handleNoteNumberChange )
00595         self.comboBox3.currentIndexChanged.connect( self.handleTempoChange )
00596         self.actionAbout.triggered.connect( self.handleAboutButton )
00597         
00598 class aboutForm(object):
00599         
00600     def setupUi(self, Form):
00601 
00602         #Configure the form
00603         Form.setObjectName(_fromUtf8("Form"))
00604         Form.resize(381, 233)
00605         Form.setMinimumSize(QtCore.QSize(381, 233))
00606         Form.setMaximumSize(QtCore.QSize(381, 233))
00607 
00608         #Create label
00609         self.label = QtGui.QLabel(Form)
00610         self.label.setGeometry(QtCore.QRect(140, 160, 121, 16))
00611         self.label.setObjectName(_fromUtf8("label"))
00612 
00613         #Create label_2
00614         self.label_2 = QtGui.QLabel(Form)
00615         self.label_2.setGeometry(QtCore.QRect(140, 180, 121, 16))
00616         self.label_2.setObjectName(_fromUtf8("label_2"))
00617 
00618         #Create label_3
00619         self.label_3 = QtGui.QLabel(Form)
00620         self.label_3.setGeometry(QtCore.QRect(160, 200, 121, 16))
00621         self.label_3.setObjectName(_fromUtf8("label_3"))
00622 
00623         #Create a graphics view
00624         self.graphicsView = QtGui.QGraphicsView(Form)
00625         self.graphicsView.setGeometry(QtCore.QRect(40, 20, 300, 120))
00626         self.graphicsView.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
00627         self.graphicsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
00628         self.graphicsView.setObjectName(_fromUtf8("graphicsView"))
00629 
00630         #Set the graphics view image
00631         self.scene = QtGui.QGraphicsScene();
00632         self.pixmap = QtGui.QPixmap( "TekBots.png" )
00633         self.scene.addPixmap(self.pixmap)
00634         self.graphicsView.setScene( self.scene )
00635         self.graphicsView.setObjectName(_fromUtf8("graphicsView"))
00636 
00637         #Set text of all UI elements
00638         self.retranslateUi(Form)
00639 
00640         #Connect Slots
00641         QtCore.QMetaObject.connectSlotsByName(Form)
00642 
00643     def retranslateUi(self, Form):
00644 
00645         #Set text of all UI elements
00646         Form.setWindowTitle(_translate("About", "About", None))
00647         self.label.setText(_translate("About", "FDRM-KL46z Beat Factory", None))
00648         self.label_2.setText(_translate("About", "Author: Ethan Takla", None))
00649         self.label_3.setText(_translate("About", "Revision 0.1", None))
00650         
00651 #Start the app        
00652 app = QApplication(sys.argv)
00653 window = QMainWindow()
00654 ui = Ui_MainWindow()
00655 ui.initializeVariables()
00656 ui.initializeUI(window)
00657 ui.initializeTable()
00658 ui.initializeSerial()
00659 ui.bind_events()
00660 
00661 window.show()
00662 sys.exit(app.exec_())