file resuming support

src/file_transfers.py

@@ -12,6 +12,7 @@ TOX_FILE_TRANSFER_STATE = {
     'PAUSED': 1,
     'CANCELED': 2,
     'FINISHED': 3,
+    'PAUSED_BY_FRIEND': 4
 }
 
 
@@ -67,6 +68,8 @@ class FileTransfer(QtCore.QObject):
     def pause(self, by_friend):
         if not by_friend:
             self.send_control(TOX_FILE_CONTROL['PAUSE'])
+        else:
+            self.state = TOX_FILE_TRANSFER_STATE['PAUSED_BY_FRIEND']
         self.signal()
 
     def send_control(self, control):

src/list_items.py

@@ -145,6 +145,8 @@ class FileTransferItem(QtGui.QListWidget):
         else:
             self.setStyleSheet('QWidget { background-color: #B40404; }')
 
+        self.state = state
+
         self.name = DataLabel(self)
         self.name.setGeometry(QtCore.QRect(1, 15, 95, 20))
         self.name.setTextFormat(QtCore.Qt.PlainText)
@@ -174,15 +176,22 @@ class FileTransferItem(QtGui.QListWidget):
         self.cancel.clicked.connect(lambda: self.cancel_transfer(friend_number, file_number))
         self.cancel.setStyleSheet('QPushButton:hover { border: 1px solid #3A3939; }')
 
-        self.accept = QtGui.QPushButton(self)
+        self.accept_or_pause = QtGui.QPushButton(self)
-        self.accept.setGeometry(QtCore.QRect(450, 2, 46, 46))
+        self.accept_or_pause.setGeometry(QtCore.QRect(450, 2, 46, 46))
-        pixmap = QtGui.QPixmap(curr_directory() + '/images/accept.png')
+        if state == FILE_TRANSFER_MESSAGE_STATUS['INCOMING_NOT_STARTED']:
-        icon = QtGui.QIcon(pixmap)
+            self.accept_or_pause.setVisible(True)
-        self.accept.setIcon(icon)
+            self.button_update('accept')
-        self.accept.setIconSize(QtCore.QSize(30, 30))
+        elif state in (0, 1, 5):
-        self.accept.clicked.connect(lambda: self.accept_transfer(friend_number, file_number, size))
+            self.accept_or_pause.setVisible(False)
-        self.accept.setVisible(state == FILE_TRANSFER_MESSAGE_STATUS['INCOMING_NOT_STARTED'])
+        elif state == FILE_TRANSFER_MESSAGE_STATUS['PAUSED_BY_USER']:  # setup for continue
-        self.accept.setStyleSheet('QPushButton:hover { border: 1px solid #3A3939; }')
+            self.accept_or_pause.setVisible(True)
+            self.button_update('resume')
+        else:  # pause
+            self.accept_or_pause.setVisible(True)
+            self.button_update('pause')
+        self.accept_or_pause.clicked.connect(lambda: self.accept_or_pause_transfer(friend_number, file_number, size))
+
+        self.accept_or_pause.setStyleSheet('QPushButton:hover { border: 1px solid #3A3939; }')
 
         self.pb = QtGui.QProgressBar(self)
         self.pb.setGeometry(QtCore.QRect(100, 15, 100, 20))
@@ -212,27 +221,56 @@ class FileTransferItem(QtGui.QListWidget):
         pr.cancel_transfer(friend_number, file_number)
         self.setStyleSheet('QListWidget { background-color: #B40404; }')
         self.cancel.setVisible(False)
-        self.accept.setVisible(False)
+        self.accept_or_pause.setVisible(False)
         self.pb.setVisible(False)
 
-    def accept_transfer(self, friend_number, file_number, size):
+    def accept_or_pause_transfer(self, friend_number, file_number, size):
+        if self.state == FILE_TRANSFER_MESSAGE_STATUS['INCOMING_NOT_STARTED']:
             directory = QtGui.QFileDialog.getExistingDirectory()
             if directory:
                 pr = profile.Profile.get_instance()
                 pr.accept_transfer(self, directory + '/' + self.saved_name, friend_number, file_number, size)
-            self.accept.setVisible(False)
+                self.button_update('pause')
+        elif self.state == FILE_TRANSFER_MESSAGE_STATUS['PAUSED_BY_USER']:  # resume
+            profile.Profile.get_instance().resume_transfer(friend_number, file_number)
+        else:  # pause
+            profile.Profile.get_instance().pause_transfer(friend_number, file_number)
+            self.state = FILE_TRANSFER_MESSAGE_STATUS['PAUSED_BY_USER']
+        self.accept_or_pause.clearFocus()
+
+    def button_update(self, path):
+        pixmap = QtGui.QPixmap(curr_directory() + '/images/{}.png'.format(path))
+        icon = QtGui.QIcon(pixmap)
+        self.accept_or_pause.setIcon(icon)
+        self.accept_or_pause.setIconSize(QtCore.QSize(30, 30))
+
+    def convert(self, state):
+        # convert TOX_FILE_TRANSFER_STATE to FILE_TRANSFER_MESSAGE_STATUS
+        d = {0: 2, 1: 6, 2: 1, 3: 0, 4: 5}
+        return d[state]
 
     @QtCore.Slot(int, float)
     def update(self, state, progress):
         self.pb.setValue(int(progress * 100))
-        if state == TOX_FILE_TRANSFER_STATE['CANCELED']:
+        state = self.convert(state)
+        if self.state != state:
+            if state == FILE_TRANSFER_MESSAGE_STATUS['CANCELLED']:
                 self.setStyleSheet('QListWidget { background-color: #B40404; }')
                 self.cancel.setVisible(False)
-            self.accept.setVisible(False)
+                self.accept_or_pause.setVisible(False)
                 self.pb.setVisible(False)
-        elif state == TOX_FILE_TRANSFER_STATE['FINISHED']:
+            elif state == FILE_TRANSFER_MESSAGE_STATUS['FINISHED']:
+                self.accept_or_pause.setVisible(False)
                 self.pb.setVisible(False)
                 self.cancel.setVisible(False)
+            elif state == FILE_TRANSFER_MESSAGE_STATUS['PAUSED_BY_FRIEND']:
+                self.accept_or_pause.setVisible(False)
+            elif state == FILE_TRANSFER_MESSAGE_STATUS['PAUSED_BY_USER']:
+                self.button_update('resume')  # setup button continue
+            else:  # active
+                self.accept_or_pause.setVisible(True)  # setup to pause
+                self.button_update('pause')
+            self.state = state
 
 
 class InlineImageItem(QtGui.QWidget):

src/profile.py

@@ -953,6 +953,12 @@ class Profile(Contact, Singleton):
     def resume_transfer(self, friend_number, file_number, by_friend=False):
         self.get_friend_by_number(friend_number).update_transfer_data(file_number,
                                                                       FILE_TRANSFER_MESSAGE_STATUS['OUTGOING'])
+        tr = self._file_transfers[(friend_number, file_number)]
+        if by_friend:
+            tr.state = TOX_FILE_TRANSFER_STATE['RUNNING']
+            tr.signal()
+        else:
+            tr.send_control(TOX_FILE_CONTROL['RESUME'])
 
     def accept_transfer(self, item, path, friend_number, file_number, size, inline=False):
         """
@@ -1018,7 +1024,7 @@ class Profile(Contact, Singleton):
         if (friend_number, file_number) in self._file_transfers:
             transfer = self._file_transfers[(friend_number, file_number)]
             transfer.write_chunk(position, data)
-            if transfer.state:
+            if transfer.state in (2, 3):  # finished or cancelled
                 if type(transfer) is ReceiveAvatar:
                     self.get_friend_by_number(friend_number).load_avatar()
                     self.set_active(None)
@@ -1043,7 +1049,7 @@ class Profile(Contact, Singleton):
         if (friend_number, file_number) in self._file_transfers:
             transfer = self._file_transfers[(friend_number, file_number)]
             transfer.send_chunk(position, size)
-            if transfer.state:
+            if transfer.state in (2, 3):  # finished or cancelled
                 del self._file_transfers[(friend_number, file_number)]
                 if type(transfer) is not SendAvatar:
                     if type(transfer) is SendFromBuffer and Settings.get_instance()['allow_inline']:  # inline