def get_image_layout(imagename, text="", tooltip="", alignment=Qt.AlignLeft): """ Construct a QHBoxLayout including image from the file with specified name, left-aligned text [with specified tooltip] Return (layout, label) """ layout = QHBoxLayout() if alignment in (Qt.AlignCenter, Qt.AlignRight): layout.addStretch() layout.addWidget(get_image_label(imagename)) label = QLabel(text) label.setToolTip(tooltip) layout.addWidget(label) if alignment in (Qt.AlignCenter, Qt.AlignLeft): layout.addStretch() return (layout, label)
class DataSetShowWidget(AbstractDataSetWidget): """Read-only base widget""" READ_ONLY = True def __init__(self, item, parent_layout): AbstractDataSetWidget.__init__(self, item, parent_layout) self.group = QLabel() wordwrap = item.get_prop_value("display", "wordwrap", False) self.group.setWordWrap(wordwrap) self.group.setToolTip(item.get_help()) self.group.setStyleSheet( LABEL_CSS ) self.group.setTextInteractionFlags(Qt.TextSelectableByMouse) #self.group.setEnabled(False) def get(self): """Override AbstractDataSetWidget method""" self.set_state() text = self.item.get_string_value() self.group.setText(text) def set(self): """Read only...""" pass
class DataSetShowWidget(AbstractDataSetWidget): """Read-only base widget""" READ_ONLY = True def __init__(self, item, parent_layout): AbstractDataSetWidget.__init__(self, item, parent_layout) self.group = QLabel() wordwrap = item.get_prop_value("display", "wordwrap", False) self.group.setWordWrap(wordwrap) self.group.setToolTip(item.get_help()) self.group.setStyleSheet(LABEL_CSS) self.group.setTextInteractionFlags(Qt.TextSelectableByMouse) #self.group.setEnabled(False) def get(self): """Override AbstractDataSetWidget method""" self.set_state() text = self.item.get_string_value() self.group.setText(text) def set(self): """Read only...""" pass
class AbstractDataSetWidget(object): """ Base class for 'widgets' handled by `DataSetEditLayout` and it's derived classes. This is a generic representation of an input (or display) widget that has a label and one or more entry field. `DataSetEditLayout` uses a registry of *Item* to *Widget* mapping in order to automatically create a GUI for a `DataSet` structure """ READ_ONLY = False def __init__(self, item, parent_layout): """Derived constructors should create the necessary widgets The base class keeps a reference to item and parent """ self.item = item self.parent_layout = parent_layout self.group = None # Layout/Widget grouping items self.label = None self.build_mode = False def place_label(self, layout, row, column): """ Place item label on layout at specified position (row, column) """ label_text = self.item.get_prop_value("display", "label") unit = self.item.get_prop_value("display", "unit", '') if unit and not self.READ_ONLY: label_text += (' (%s)' % unit) self.label = QLabel(label_text) self.label.setToolTip(self.item.get_help()) layout.addWidget(self.label, row, column) def place_on_grid(self, layout, row, label_column, widget_column, row_span=1, column_span=1): """ Place widget on layout at specified position """ self.place_label(layout, row, label_column) layout.addWidget(self.group, row, widget_column, row_span, column_span) def is_active(self): """ Return True if associated item is active """ return self.item.get_prop_value("display", "active", True) def check(self): """ Item validator """ return True def set(self): """ Update data item value from widget contents """ # XXX: consider using item.set instead of item.set_from_string... self.item.set_from_string(self.value()) def get(self): """ Update widget contents from data item value """ pass def value(self): """ Returns the widget's current value """ return None def set_state(self): """ Update the visual status of the widget """ active = self.is_active() if self.group: self.group.setEnabled(active) if self.label: self.label.setEnabled(active)