Progress image generation for table

__main__.py

@@ -56,12 +56,12 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         self.statusBar.addWidget(self.sorterProgress)
         self.sorterProgress.setVisible(False)
 
-        # Init the Library
-        self.lib_ref = Library(self)
-
         # Application wide temporary directory
         self.temp_dir = QtCore.QTemporaryDir()
 
+        # Init the Library
+        self.lib_ref = Library(self)
+
         # Library toolbar
         self.libraryToolBar = LibraryToolBar(self)
         self.libraryToolBar.addButton.triggered.connect(self.add_books)

library.py

@@ -129,11 +129,12 @@ class Library:
             # all_metadata is just being sent. It is not being displayed
             # It will be correlated to the current row as its first userrole
             self.table_rows.append(
-                (title, author, year, tags, all_metadata))
+                (title, author, None, year, tags, all_metadata))
 
     def create_table_model(self):
-        table_header = ['Title', 'Author', 'Year', 'Tags']
-        self.table_model = LibraryTableModel(table_header, self.table_rows)
+        table_header = ['Title', 'Author', 'Status', 'Year', 'Tags']
+        self.table_model = LibraryTableModel(
+            table_header, self.table_rows, self.parent_window.temp_dir.path())
         self.create_table_proxy_model()
 
     def create_table_proxy_model(self):
@@ -148,7 +149,7 @@ class Library:
     def update_table_proxy_model(self):
         self.table_proxy_model.invalidateFilter()
         self.table_proxy_model.setFilterParams(
-            self.parent_window.libraryToolBar.searchBar.text(), [0, 1, 3])
+            self.parent_window.libraryToolBar.searchBar.text(), [0, 1, 4])
         # This isn't needed, but it forces a model update every time the
         # text in the line edit changes. So I guess it is needed.
         self.table_proxy_model.setFilterFixedString(

models.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python3
 
+import os
+
 from PyQt5 import QtCore, QtGui
+from resources import pie_chart
 
 
 class LibraryItemModel(QtGui.QStandardItemModel, QtCore.QAbstractItemModel):
@@ -13,10 +16,12 @@ class LibraryTableModel(QtCore.QAbstractTableModel):
     # Sorting is taken care of by the QSortFilterProxy model
     # which has an inbuilt sort method
 
-    def __init__(self, header_data, display_data, parent=None):
+    def __init__(self, header_data, display_data, temp_dir=None, parent=None):
         super(LibraryTableModel, self).__init__(parent)
         self.header_data = header_data
         self.display_data = display_data
+        self.temp_dir = temp_dir  # Is only needed for the main table
+                                  # This model is otherwise reusable if this remains None
 
     def rowCount(self, parent):
         return len(self.display_data)
@@ -28,13 +33,38 @@ class LibraryTableModel(QtCore.QAbstractTableModel):
         if not index.isValid():
             return None
 
+        if role == QtCore.Qt.DecorationRole and index.column() == 2 and self.temp_dir:
+            return_pixmap = None
+            file_exists = self.display_data[index.row()][5]['file_exists']
+            position = self.display_data[index.row()][5]['position']
+
+            if not file_exists:
+                return_pixmap = QtGui.QIcon(':/images/error.svg').pixmap(
+                    QtCore.Qt.SizeHintRole + 10)
+
+            if position:
+                current_chapter = position['current_chapter']
+                total_chapters = position['total_chapters']
+                progress_percent = int(current_chapter * 100 / total_chapters)
+
+                if current_chapter == total_chapters:
+                    return_pixmap = QtGui.QIcon(':/images/checkmark.svg').pixmap(
+                        QtCore.Qt.SizeHintRole + 10)
+                else:
+                    pie_chart.GeneratePie(progress_percent, self.temp_dir).generate()
+                    svg_path = os.path.join(self.temp_dir, 'lector_progress.svg')
+                    return_pixmap = QtGui.QIcon(svg_path).pixmap(
+                        QtCore.Qt.SizeHintRole + 10)
+
+            return return_pixmap
+
         if role == QtCore.Qt.DisplayRole:
             value = self.display_data[index.row()][index.column()]
-            file_exists = self.display_data[index.row()][4]['file_exists']
             return value
+
         elif role == QtCore.Qt.UserRole:
             # The rest of the roles can be accomodated here.
-            value = self.display_data[index.row()][4]
+            value = self.display_data[index.row()][5]
             return value
         else:
             return QtCore.QVariant()

widgets.py

@@ -339,7 +339,6 @@ class FixedPushButton(QtWidgets.QPushButton):
 class Tab(QtWidgets.QWidget):
     def __init__(self, metadata, parent=None):
         # TODO
-        # A horizontal slider to control flow
         # Take hint from a position function argument to open the book
         # at a specific page