def edit_cell ( self, parent, row, column ): """ Returns the editor widget to use for editing a specified cell's value. """ self.cell_row = self.data_row_for( row ) # Get the editor factory to use. If none, exit (read-only cell): editor_factory = self.grid_adapter.get_editor( self.cell_row, column ) if editor_factory is None: return None # Create the requested type of editor from the editor factory: # Note: We save the editor reference so that the editor doesn't get # garbage collected too soon. self.cell_column = column object, name = self.grid_adapter.get_alias( self.cell_row, column ) editor = editor_factory.simple_editor( self.ui, object, name, '' ).set( item = self.item, object_name = '' ) # Tell the editor to actually build the editing widget: editor.prepare( control_adapter( parent ) ) # Make sure that the editor is a control (and not a layout): self._editor = editor control = editor.control if not isinstance( control, QWidget ): layout = control control = QWidget( parent ) control.setLayout( layout ) layout.setContentsMargins( 5, 0, 5, 0 ) control._editor = editor # Adjust the row height of the grid row to fit the editor control: height = control.height() if height > self.height: if (self.height - height) <= 4: # If the difference is not too great, then we will just adjust # the grid height to accomodate it: self.row_height( height ) else: # Otherwise, just adjust the height of this row temporarily: control._row = row self.control.verticalHeader().resizeSection( row, height ) # Resize the grid column width to fit the editor if necessary: width = control.width() header = self.control.horizontalHeader() column_width = header.sectionSize( column ) if width > column_width: control._column = column control._width = column_width header.resizeSection( column, width ) # Return the editing widget as the result: return control
class StatusScrollArea(QScrollArea): def __init__(self): super(StatusScrollArea, self).__init__() self._width = 0 self._group_count = 0 self._pan_pos = None self.__create_ui() self.__init_ui() def __create_ui(self): self.container = QWidget() self.container_layout = QHBoxLayout() self.container.setLayout(self.container_layout) self.setWidget(self.container) def __init_ui(self): self.container.setFixedHeight(TOOLBAR_BUTTON_SIZE) self.container_layout.setContentsMargins(0, 0, 0, 0) self.container_layout.setSpacing(1) self.container_layout.setAlignment(Qt.AlignLeft) self.setFixedHeight(TOOLBAR_BUTTON_SIZE) self.setFocusPolicy(Qt.NoFocus) self.setFrameShape(self.NoFrame) self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) def _update_width(self, expand_value): self._width += expand_value self.container.setFixedWidth(self._width + self._group_count) def mousePressEvent(self, event): if event.button() == Qt.MidButton: QApplication.setOverrideCursor(QCursor(Qt.SizeHorCursor)) self._pan_pos = event.globalPos() event.accept() else: event.ignore() def mouseReleaseEvent(self, event): if event.button() == Qt.MidButton: QApplication.restoreOverrideCursor() self._pan_pos = None event.accept() else: event.ignore() def mouseMoveEvent(self, event): if self._pan_pos: h_bar = self.horizontalScrollBar() h_bar_pos = h_bar.sliderPosition() cursor_pos = event.globalPos() cursor_delta = (cursor_pos - self._pan_pos).x() h_bar.setValue(h_bar_pos - cursor_delta) self._pan_pos = cursor_pos event.accept() else: event.ignore() def wheelEvent(self, event): if event.orientation() == Qt.Vertical: num_degrees = event.delta() / 8 h_bar = self.horizontalScrollBar() h_bar_pos = h_bar.sliderPosition() h_bar.setValue(h_bar_pos - num_degrees) else: super(StatusScrollArea, self).wheelEvent(event) def resizeEvent(self, event): max_scroll = max(0, self.container.width() - event.size().width()) self.horizontalScrollBar().setMaximum(max_scroll) def add_widget(self, widget): # add widget to layout self.container_layout.addWidget(widget) # connect widget for future update when user interact with it widget.toggled.connect(self._update_width) # expand widget layout self._width += widget.max_length() self._group_count += 1 self.container.setFixedWidth(self._width)