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[processing] ParameterTableMultipleField type added
This adds a widget with multiple column attributes selector
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,218 @@ | ||
| """ | ||
| allows multiple selection in a large list | ||
| Contact : marco@opengis.ch | ||
| .. note:: This program is free software; you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation; either version 2 of the License, or | ||
| (at your option) any later version. | ||
| """ | ||
|
|
||
| __author__ = 'marco@opengis.ch' | ||
| __revision__ = '$Format:%H$' | ||
| __date__ = '9/07/2013' | ||
|
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| from PyQt4 import QtGui, QtCore, Qt | ||
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| class ListMultiSelectWidget(QtGui.QGroupBox): | ||
| """Widget to show two parallel lists and move elements between the two | ||
| usage from code: | ||
| self.myWidget = ListMultiSelectWidget(title='myTitle') | ||
| self.myLayout.insertWidget(1, self.myWidget) | ||
| usage from designer: | ||
| insert a QGroupBox in your UI file | ||
| optionally give a title to the QGroupBox | ||
| promote it to ListMultiSelectWidget | ||
| """ | ||
|
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| selection_changed = QtCore.pyqtSignal() | ||
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| def __init__(self, parent=None, title=None): | ||
| QtGui.QGroupBox.__init__(self) | ||
| self.setTitle(title) | ||
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| self.selected_widget = None | ||
| self.unselected_widget = None | ||
| self._setupUI() | ||
|
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| # connect actions | ||
| self.select_all_btn.clicked.connect(self._select_all) | ||
| self.deselect_all_btn.clicked.connect(self._deselect_all) | ||
| self.select_btn.clicked.connect(self._select) | ||
| self.deselect_btn.clicked.connect(self._deselect) | ||
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| self.unselected_widget.itemDoubleClicked.connect(self._select) | ||
| self.selected_widget.itemDoubleClicked.connect(self._deselect) | ||
|
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| def get_selected_items(self): | ||
| """ | ||
| :return list with all the selected items text | ||
| """ | ||
| return self._get_items(self.selected_widget) | ||
|
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| def get_unselected_items(self): | ||
| """ | ||
| :return list with all the unselected items text | ||
| """ | ||
| return self._get_items(self.unselected_widget) | ||
|
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| def add_selected_items(self, items): | ||
| """ | ||
| :param items list of strings to be added in the selected list | ||
| """ | ||
| self._add_items(self.selected_widget, items) | ||
|
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| def add_unselected_items(self, items): | ||
| """ | ||
| :param items list of strings to be added in the unselected list | ||
| """ | ||
| self._add_items(self.unselected_widget, items) | ||
|
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| def set_selected_items(self, items): | ||
| """ | ||
| :param items list of strings to be set as the selected list | ||
| """ | ||
| self._set_items(self.selected_widget, items) | ||
|
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| def set_unselected_items(self, items): | ||
| """ | ||
| :param items list of strings to be set as the unselected list | ||
| """ | ||
| self._set_items(self.unselected_widget, items) | ||
|
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| def clear(self): | ||
| """ | ||
| removes all items from selected and unselected | ||
| """ | ||
| self.set_selected_items([]) | ||
| self.set_unselected_items([]) | ||
|
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| def addItem(self, item): | ||
| """ | ||
| This is for Processing | ||
| :param item: string to be added in the unselected list | ||
| """ | ||
| self.add_unselected_items([item]) | ||
|
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| def addItems(self, items): | ||
| """ | ||
| This is for Processing | ||
| :param items: list of strings to be added in the unselected list | ||
| """ | ||
| self.add_unselected_items(items) | ||
|
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| def _get_items(self, widget): | ||
| for i in range(widget.count()): | ||
| yield widget.item(i).text() | ||
|
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| def _set_items(self, widget, items): | ||
| widget.clear() | ||
| self._add_items(widget, items) | ||
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| def _add_items(self, widget, items): | ||
| widget.addItems(items) | ||
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| def _select_all(self): | ||
| self.unselected_widget.selectAll() | ||
| self._do_move(self.unselected_widget, self.selected_widget) | ||
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| def _deselect_all(self): | ||
| self.selected_widget.selectAll() | ||
| self._do_move(self.selected_widget, self.unselected_widget) | ||
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| def _select(self): | ||
| self._do_move(self.unselected_widget, self.selected_widget) | ||
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| def _deselect(self): | ||
| self._do_move(self.selected_widget, self.unselected_widget) | ||
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| def _do_move(self, fromList, toList): | ||
| for item in fromList.selectedItems(): | ||
| prev_from_item = fromList.item(fromList.row(item) - 1) | ||
| toList.addItem(fromList.takeItem(fromList.row(item))) | ||
| fromList.scrollToItem(prev_from_item) | ||
| self.selection_changed.emit() | ||
|
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| def _setupUI(self): | ||
| self.setSizePolicy( | ||
| QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Ignored) | ||
|
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| self.setMinimumHeight(180) | ||
|
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| self.main_horizontal_layout = QtGui.QHBoxLayout(self) | ||
|
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| italic_font = QtGui.QFont() | ||
| italic_font.setItalic(True) | ||
|
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| # unselected widget | ||
| self.unselected_widget = QtGui.QListWidget(self) | ||
| self._set_list_widget_defaults(self.unselected_widget) | ||
| unselected_label = QtGui.QLabel() | ||
| unselected_label.setText('Unselected') | ||
| unselected_label.setAlignment(Qt.Qt.AlignCenter) | ||
| unselected_label.setFont(italic_font) | ||
| unselected_v_layout = QtGui.QVBoxLayout() | ||
| unselected_v_layout.addWidget(unselected_label) | ||
| unselected_v_layout.addWidget(self.unselected_widget) | ||
|
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| # selected widget | ||
| self.selected_widget = QtGui.QListWidget(self) | ||
| self._set_list_widget_defaults(self.selected_widget) | ||
| selected_label = QtGui.QLabel() | ||
| selected_label.setText('Selected') | ||
| selected_label.setAlignment(Qt.Qt.AlignCenter) | ||
| selected_label.setFont(italic_font) | ||
| selected_v_layout = QtGui.QVBoxLayout() | ||
| selected_v_layout.addWidget(selected_label) | ||
| selected_v_layout.addWidget(self.selected_widget) | ||
|
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| # buttons | ||
| self.buttons_vertical_layout = QtGui.QVBoxLayout() | ||
| self.buttons_vertical_layout.setContentsMargins(0, -1, 0, -1) | ||
|
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| self.select_all_btn = SmallQPushButton('>>') | ||
| self.deselect_all_btn = SmallQPushButton('<<') | ||
| self.select_btn = SmallQPushButton('>') | ||
| self.deselect_btn = SmallQPushButton('<') | ||
| self.select_btn.setToolTip('Add the selected items') | ||
| self.deselect_btn.setToolTip('Remove the selected items') | ||
| self.select_all_btn.setToolTip('Add all') | ||
| self.deselect_all_btn.setToolTip('Remove all') | ||
|
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||
| # add buttons | ||
| spacer_label = QtGui.QLabel() # pragmatic way to create a spacer with | ||
| # the same height of the labels on top | ||
| # of the lists, in order to align the | ||
| # buttons with the lists. | ||
| self.buttons_vertical_layout.addWidget(spacer_label) | ||
| self.buttons_vertical_layout.addWidget(self.select_btn) | ||
| self.buttons_vertical_layout.addWidget(self.deselect_btn) | ||
| self.buttons_vertical_layout.addWidget(self.select_all_btn) | ||
| self.buttons_vertical_layout.addWidget(self.deselect_all_btn) | ||
|
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| # add sub widgets | ||
| self.main_horizontal_layout.addLayout(unselected_v_layout) | ||
| self.main_horizontal_layout.addLayout(self.buttons_vertical_layout) | ||
| self.main_horizontal_layout.addLayout(selected_v_layout) | ||
|
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| def _set_list_widget_defaults(self, widget): | ||
| widget.setAlternatingRowColors(True) | ||
| widget.setSortingEnabled(True) | ||
| widget.setDragEnabled(True) | ||
| widget.setDragDropMode(QtGui.QAbstractItemView.DragDrop) | ||
| widget.setDragDropOverwriteMode(False) | ||
| widget.setDefaultDropAction(QtCore.Qt.MoveAction) | ||
| widget.setSelectionMode(QtGui.QAbstractItemView.MultiSelection) | ||
|
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| class SmallQPushButton(QtGui.QPushButton): | ||
| def __init__(self, text): | ||
| QtGui.QPushButton.__init__(self) | ||
| self.setText(text) | ||
| buttons_size_policy = QtGui.QSizePolicy( | ||
| QtGui.QSizePolicy.Fixed, QtGui.QSizePolicy.Fixed) | ||
| self.setSizePolicy(buttons_size_policy) | ||
| self.setMaximumSize(QtCore.QSize(30, 30)) |
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