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alexbruy
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nyalldawson
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[processing] modeler GUI for matrix parameter
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‎python/plugins/processing/gui/matrixmodelerwidget.py

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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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MatrixModelerWidget.py
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---------------------
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Date : May 2018
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Copyright : (C) 2018 by Alexander Bruy
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Email : alexander dot bruy at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Alexander Bruy'
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__date__ = 'May 2018'
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__copyright__ = '(C) 2018, Alexander Bruy'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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import os
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from qgis.PyQt import uic
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from qgis.PyQt.QtCore import Qt
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from qgis.PyQt.QtGui import QStandardItemModel, QStandardItem
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from qgis.PyQt.QtWidgets import QInputDialog
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from qgis.core import QgsApplication
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pluginPath = os.path.split(os.path.dirname(__file__))[0]
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WIDGET, BASE = uic.loadUiType(
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os.path.join(pluginPath, 'ui', 'matrixmodelerwidgetbase.ui'))
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class MatrixModelerWidget(BASE, WIDGET):
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def __init__(self, parent=None):
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super(MatrixModelerWidget, self).__init__(parent)
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self.setupUi(self)
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self.btnAddColumn.setIcon(QgsApplication.getThemeIcon('/mActionNewAttribute.svg'))
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self.btnRemoveColumn.setIcon(QgsApplication.getThemeIcon('/mActionDeleteAttribute.svg'))
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self.btnAddRow.setIcon(QgsApplication.getThemeIcon('/symbologyAdd.svg'))
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self.btnRemoveRow.setIcon(QgsApplication.getThemeIcon('/symbologyRemove.svg'))
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self.btnClear.setIcon(QgsApplication.getThemeIcon('/mIconClearText.svg'))
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self.btnAddColumn.clicked.connect(self.addColumn)
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self.btnRemoveColumn.clicked.connect(self.removeColumns)
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self.btnAddRow.clicked.connect(self.addRow)
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self.btnRemoveRow.clicked.connect(self.removeRows)
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self.btnClear.clicked.connect(self.clearTable)
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self.tblView.setModel(QStandardItemModel())
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self.tblView.horizontalHeader().sectionDoubleClicked.connect(self.changeHeader)
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def addColumn(self):
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model = self.tblView.model()
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items = [QStandardItem('0') for i in range(model.rowCount())]
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model.appendColumn(items)
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def removeColumns(self):
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indexes = sorted(self.tblView.selectionModel().selectedColumns())
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self.tblView.setUpdatesEnabled(False)
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for i in reversed(indexes):
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self.tblView.model().removeColumns(i.column(), 1)
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self.tblView.setUpdatesEnabled(True)
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def addRow(self):
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model = self.tblView.model()
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items = [QStandardItem('0') for i in range(model.columnCount())]
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model.appendRow(items)
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def removeRows(self):
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indexes = sorted(self.tblView.selectionModel().selectedRows())
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self.tblView.setUpdatesEnabled(False)
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for i in reversed(indexes):
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self.tblView.model().removeRows(i.row(), 1)
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self.tblView.setUpdatesEnabled(True)
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def clearTable(self, removeAll=False):
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self.tblView.model().clear()
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def changeHeader(self, index):
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txt, ok = QInputDialog.getText(self, self.tr("Enter column name"), self.tr("Column name"))
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if ok:
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self.tblView.model().setHeaderData(index, Qt.Horizontal, txt)
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def value(self):
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items = []
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model = self.tblView.model()
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for i in range(model.rowCount()):
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row = []
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for j in range(model.columnCount()):
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item = model.item(i, j)
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row.append(item.text())
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items.append(row)
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return items
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def setValue(self, table):
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cols = len(table[0])
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rows = len(table)
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model = QStandardItemModel(rows, cols)
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for i in range(rows):
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for j in range(cols):
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item = QStandardItem(str(table[i][j]))
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model.setItem(i, j, item)
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self.tblView.setModel(model)
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def headers(self):
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headers = []
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model = self.tblView.model()
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for i in range(model.columnCount()):
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headers.append(model.headerData(i, Qt.Horizontal))
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return headers
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def setHeaders(self, headers):
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model = self.tblView.model()
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model.setHorizontalHeaderLabels(headers)
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def fixedRows(self):
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return self.chkFixedRows.isChecked()
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def setFixedRows(self):
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self.chkFixedRows.setChecked(True)

‎python/plugins/processing/modeler/ModelerParameterDefinitionDialog.py

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)
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from processing.gui.enummodelerwidget import EnumModelerWidget
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from processing.gui.matrixmodelerwidget import MatrixModelerWidget
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from processing.core import parameters
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from processing.modeler.exceptions import UndefinedParameterException
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self.widget.setDefault(int(self.param.defaultValue()))
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self.widget.setAllowMultiple(bool(self.param.allowMultiple()))
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self.verticalLayout.addWidget(self.widget)
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elif self.paramType == parameters.PARAMETER_MATRIX or \
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isinstance(self.param, QgsProcessingParameterMatrix):
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self.widget = MatrixModelerWidget(self)
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if self.param is not None:
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self.widget.setValue(self.param.defaultValue())
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self.widget.setHeaders(self.param.headers())
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self.widget.setFixedRows(self.param.hasFixedNumberRows())
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self.verticalLayout.addWidget(self.widget)
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self.verticalLayout.addSpacing(20)
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self.requiredCheck = QCheckBox()

‎python/plugins/processing/ui/matrixmodelerwidgetbase.ui

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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>Form</class>
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<widget class="QWidget" name="Form">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>400</width>
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<height>300</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>Form</string>
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</property>
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<layout class="QGridLayout" name="gridLayout">
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<property name="leftMargin">
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<number>0</number>
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</property>
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<property name="topMargin">
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<number>0</number>
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</property>
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<property name="rightMargin">
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<number>0</number>
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</property>
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<property name="bottomMargin">
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<number>0</number>
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</property>
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<item row="0" column="0" rowspan="8">
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<widget class="QTableView" name="tblView">
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<attribute name="horizontalHeaderStretchLastSection">
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<bool>true</bool>
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</attribute>
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</widget>
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</item>
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<item row="4" column="1">
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<widget class="QToolButton" name="btnRemoveRow">
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<property name="toolTip">
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<string>Remove row</string>
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</property>
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<property name="text">
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<string>...</string>
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</property>
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</widget>
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</item>
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<item row="6" column="1">
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<widget class="QToolButton" name="btnClear">
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<property name="toolTip">
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<string>Clear all</string>
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</property>
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<property name="text">
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<string>...</string>
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</property>
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</widget>
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</item>
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<item row="7" column="1">
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<spacer name="verticalSpacer">
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<property name="orientation">
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<enum>Qt::Vertical</enum>
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</property>
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<property name="sizeHint" stdset="0">
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<size>
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<width>20</width>
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<height>172</height>
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</size>
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</property>
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</spacer>
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</item>
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<item row="8" column="0" colspan="2">
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<widget class="QCheckBox" name="chkFixedRows">
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<property name="text">
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<string>Fixed number of rows</string>
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</property>
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</widget>
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</item>
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<item row="3" column="1">
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<widget class="QToolButton" name="btnAddRow">
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<property name="toolTip">
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<string>Add row</string>
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</property>
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<property name="text">
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<string>...</string>
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</property>
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</widget>
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</item>
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<item row="1" column="1">
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<widget class="QToolButton" name="btnAddColumn">
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<property name="toolTip">
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<string>Add column</string>
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</property>
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<property name="text">
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<string>...</string>
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</property>
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</widget>
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</item>
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<item row="2" column="1">
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<widget class="QToolButton" name="btnRemoveColumn">
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<property name="toolTip">
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<string>Remove column</string>
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</property>
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<property name="text">
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<string>...</string>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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<resources/>
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<connections/>
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</ui>

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