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https://github.com/qgis/QGIS.git
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486 lines
22 KiB
Python
486 lines
22 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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ModelerGraphicItem.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf 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__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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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import math
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from qgis.PyQt.QtCore import Qt, QPointF, QRectF
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from qgis.PyQt.QtGui import QFont, QFontMetricsF, QPen, QBrush, QColor, QPolygonF, QPicture, QPainter
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from qgis.PyQt.QtWidgets import QGraphicsItem, QMessageBox, QMenu
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from qgis.PyQt.QtSvg import QSvgRenderer
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from qgis.core import (QgsProcessingParameterDefinition,
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QgsProcessingModelParameter,
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QgsProcessingModelOutput,
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QgsProcessingModelChildAlgorithm,
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QgsProcessingModelAlgorithm)
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from processing.modeler.ModelerParameterDefinitionDialog import ModelerParameterDefinitionDialog
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from processing.modeler.ModelerParametersDialog import ModelerParametersDialog
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pluginPath = os.path.split(os.path.dirname(__file__))[0]
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class ModelerGraphicItem(QGraphicsItem):
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BOX_HEIGHT = 30
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BOX_WIDTH = 200
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def __init__(self, element, model, controls, scene=None):
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super(ModelerGraphicItem, self).__init__(None)
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self.controls = controls
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self.model = model
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self.scene = scene
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self.element = element
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if isinstance(element, QgsProcessingModelParameter):
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svg = QSvgRenderer(os.path.join(pluginPath, 'images', 'input.svg'))
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self.picture = QPicture()
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painter = QPainter(self.picture)
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svg.render(painter)
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self.pixmap = None
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self.text = self.model.parameterDefinition(element.parameterName()).description()
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elif isinstance(element, QgsProcessingModelOutput):
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# Output name
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svg = QSvgRenderer(os.path.join(pluginPath, 'images', 'output.svg'))
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self.picture = QPicture()
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painter = QPainter(self.picture)
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svg.render(painter)
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self.pixmap = None
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self.text = element.name()
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else:
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self.text = element.description()
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self.pixmap = element.algorithm().icon().pixmap(15, 15)
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self.arrows = []
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self.setFlag(QGraphicsItem.ItemIsMovable, True)
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self.setFlag(QGraphicsItem.ItemIsSelectable, True)
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self.setFlag(QGraphicsItem.ItemSendsGeometryChanges, True)
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self.setZValue(1000)
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if not isinstance(element, QgsProcessingModelOutput) and controls:
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svg = QSvgRenderer(os.path.join(pluginPath, 'images', 'edit.svg'))
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picture = QPicture()
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painter = QPainter(picture)
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svg.render(painter)
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pt = QPointF(ModelerGraphicItem.BOX_WIDTH / 2 -
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FlatButtonGraphicItem.WIDTH / 2,
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ModelerGraphicItem.BOX_HEIGHT / 2 -
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FlatButtonGraphicItem.HEIGHT / 2)
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self.editButton = FlatButtonGraphicItem(picture, pt, self.editElement)
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self.editButton.setParentItem(self)
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svg = QSvgRenderer(os.path.join(pluginPath, 'images', 'delete.svg'))
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picture = QPicture()
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painter = QPainter(picture)
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svg.render(painter)
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pt = QPointF(ModelerGraphicItem.BOX_WIDTH / 2 -
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FlatButtonGraphicItem.WIDTH / 2,
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FlatButtonGraphicItem.HEIGHT / 2 -
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ModelerGraphicItem.BOX_HEIGHT / 2)
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self.deleteButton = FlatButtonGraphicItem(picture, pt,
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self.removeElement)
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self.deleteButton.setParentItem(self)
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if isinstance(element, QgsProcessingModelChildAlgorithm):
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alg = element.algorithm()
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if [a for a in alg.parameterDefinitions() if not a.isDestination()]:
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pt = self.getLinkPointForParameter(-1)
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pt = QPointF(0, pt.y())
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if controls:
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self.inButton = FoldButtonGraphicItem(pt, self.foldInput, self.element.parametersCollapsed())
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self.inButton.setParentItem(self)
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if alg.outputDefinitions():
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pt = self.getLinkPointForOutput(-1)
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pt = QPointF(0, pt.y())
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if controls:
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self.outButton = FoldButtonGraphicItem(pt, self.foldOutput, self.element.outputsCollapsed())
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self.outButton.setParentItem(self)
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def foldInput(self, folded):
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self.element.setParametersCollapsed(folded)
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#also need to update the model's stored component
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self.model.childAlgorithm(self.element.childId()).setParametersCollapsed(folded)
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self.prepareGeometryChange()
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if self.element.algorithm().outputDefinitions():
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pt = self.getLinkPointForOutput(-1)
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pt = QPointF(0, pt.y())
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self.outButton.position = pt
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for arrow in self.arrows:
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arrow.updatePath()
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self.update()
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def foldOutput(self, folded):
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self.element.setOutputsCollapsed(folded)
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# also need to update the model's stored component
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self.model.childAlgorithm(self.element.childId()).setOutputsCollapsed(folded)
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self.prepareGeometryChange()
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for arrow in self.arrows:
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arrow.updatePath()
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self.update()
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def addArrow(self, arrow):
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self.arrows.append(arrow)
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def boundingRect(self):
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font = QFont('Verdana', 8)
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font.setPixelSize(12)
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fm = QFontMetricsF(font)
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unfolded = isinstance(self.element, QgsProcessingModelChildAlgorithm) and not self.element.parametersCollapsed()
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numParams = len([a for a in self.element.algorithm().parameterDefinitions() if not a.isDestination()]) if unfolded else 0
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unfolded = isinstance(self.element, QgsProcessingModelChildAlgorithm) and not self.element.outputsCollapsed()
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numOutputs = len(self.element.algorithm().outputDefinitions()) if unfolded else 0
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hUp = fm.height() * 1.2 * (numParams + 2)
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hDown = fm.height() * 1.2 * (numOutputs + 2)
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rect = QRectF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
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-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp,
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ModelerGraphicItem.BOX_WIDTH + 2,
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ModelerGraphicItem.BOX_HEIGHT + hDown + hUp)
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return rect
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def mouseDoubleClickEvent(self, event):
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self.editElement()
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def contextMenuEvent(self, event):
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if isinstance(self.element, QgsProcessingModelOutput):
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return
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popupmenu = QMenu()
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removeAction = popupmenu.addAction('Remove')
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removeAction.triggered.connect(self.removeElement)
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editAction = popupmenu.addAction('Edit')
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editAction.triggered.connect(self.editElement)
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if isinstance(self.element, QgsProcessingModelChildAlgorithm):
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if not self.element.isActive():
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removeAction = popupmenu.addAction('Activate')
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removeAction.triggered.connect(self.activateAlgorithm)
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else:
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deactivateAction = popupmenu.addAction('Deactivate')
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deactivateAction.triggered.connect(self.deactivateAlgorithm)
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popupmenu.exec_(event.screenPos())
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def deactivateAlgorithm(self):
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self.model.deactivateChildAlgorithm(self.element.childId())
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self.scene.dialog.repaintModel()
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def activateAlgorithm(self):
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if self.model.activateChildAlgorithm(self.element.childId()):
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self.scene.dialog.repaintModel()
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else:
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QMessageBox.warning(None, 'Could not activate Algorithm',
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'The selected algorithm depends on other currently non-active algorithms.\n'
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'Activate them them before trying to activate it.')
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def editElement(self):
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if isinstance(self.element, QgsProcessingModelParameter):
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dlg = ModelerParameterDefinitionDialog(self.model,
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param=self.model.parameterDefinition(self.element.parameterName()))
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if dlg.exec_() and dlg.param is not None:
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self.model.removeModelParameter(self.element.parameterName())
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self.element.setParameterName(dlg.param.name())
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self.element.setDescription(dlg.param.name())
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self.model.addModelParameter(dlg.param, self.element)
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self.text = dlg.param.description()
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self.scene.dialog.repaintModel()
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elif isinstance(self.element, QgsProcessingModelChildAlgorithm):
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dlg = None
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try:
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dlg = self.element.algorithm().getCustomModelerParametersDialog(self.model, self.element.childId())
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except:
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pass
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if not dlg:
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dlg = ModelerParametersDialog(self.element.algorithm(), self.model, self.element.childId())
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if dlg.exec_():
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alg = dlg.createAlgorithm()
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alg.setChildId(self.element.childId())
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self.updateAlgorithm(alg)
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self.scene.dialog.repaintModel()
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def updateAlgorithm(self, alg):
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existing_child = self.model.childAlgorithm(alg.childId())
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alg.setPosition(existing_child.position())
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alg.setParametersCollapsed(existing_child.parametersCollapsed())
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alg.setOutputsCollapsed(existing_child.outputsCollapsed())
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for i, out in enumerate(alg.modelOutputs().keys()):
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alg.modelOutput(out).setPosition(alg.modelOutput(out).position() or
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alg.position() + QPointF(
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ModelerGraphicItem.BOX_WIDTH,
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(i + 1.5) * ModelerGraphicItem.BOX_HEIGHT))
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self.model.setChildAlgorithm(alg)
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def removeElement(self):
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if isinstance(self.element, QgsProcessingModelParameter):
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if self.model.childAlgorithmsDependOnParameter(self.element.parameterName()):
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QMessageBox.warning(None, 'Could not remove input',
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'Algorithms depend on the selected input.\n'
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'Remove them before trying to remove it.')
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elif self.model.otherParametersDependOnParameter(self.element.parameterName()):
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QMessageBox.warning(None, 'Could not remove input',
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'Other inputs depend on the selected input.\n'
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'Remove them before trying to remove it.')
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else:
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self.model.removeModelParameter(self.element.parameterName())
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self.scene.dialog.haschanged = True
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self.scene.dialog.repaintModel()
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elif isinstance(self.element, QgsProcessingModelChildAlgorithm):
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if not self.model.removeChildAlgorithm(self.element.childId()):
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QMessageBox.warning(None, 'Could not remove element',
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'Other elements depend on the selected one.\n'
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'Remove them before trying to remove it.')
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else:
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self.scene.dialog.haschanged = True
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self.scene.dialog.repaintModel()
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def getAdjustedText(self, text):
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font = QFont('Verdana', 8)
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font.setPixelSize(12)
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fm = QFontMetricsF(font)
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w = fm.width(text)
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if w < self.BOX_WIDTH - 25 - FlatButtonGraphicItem.WIDTH:
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return text
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text = text[0:-3] + '…'
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w = fm.width(text)
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while w > self.BOX_WIDTH - 25 - FlatButtonGraphicItem.WIDTH:
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text = text[0:-4] + '…'
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w = fm.width(text)
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return text
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def paint(self, painter, option, widget=None):
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rect = QRectF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2.0,
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-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2.0,
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ModelerGraphicItem.BOX_WIDTH + 2,
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ModelerGraphicItem.BOX_HEIGHT + 2)
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if isinstance(self.element, QgsProcessingModelParameter):
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color = QColor(238, 242, 131)
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stroke = QColor(234, 226, 118)
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selected = QColor(116, 113, 68)
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elif isinstance(self.element, QgsProcessingModelChildAlgorithm):
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color = QColor(255, 255, 255)
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stroke = Qt.gray
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selected = QColor(50, 50, 50)
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else:
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color = QColor(172, 196, 114)
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stroke = QColor(90, 140, 90)
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selected = QColor(42, 65, 42)
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if self.isSelected():
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stroke = selected
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color = color.darker(110)
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painter.setPen(QPen(stroke, 0)) # 0 width "cosmetic" pen
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painter.setBrush(QBrush(color, Qt.SolidPattern))
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painter.drawRect(rect)
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font = QFont('Verdana', 8)
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font.setPixelSize(12)
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painter.setFont(font)
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painter.setPen(QPen(Qt.black))
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text = self.getAdjustedText(self.text)
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if isinstance(self.element, QgsProcessingModelChildAlgorithm) and not self.element.isActive():
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painter.setPen(QPen(Qt.gray))
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text = text + "\n(deactivated)"
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fm = QFontMetricsF(font)
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text = self.getAdjustedText(self.text)
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h = fm.ascent()
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pt = QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 25, ModelerGraphicItem.BOX_HEIGHT / 2.0 - h + 1)
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painter.drawText(pt, text)
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painter.setPen(QPen(Qt.black))
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if isinstance(self.element, QgsProcessingModelChildAlgorithm):
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h = -(fm.height() * 1.2)
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h = h - ModelerGraphicItem.BOX_HEIGHT / 2.0 + 5
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pt = QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 25, h)
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painter.drawText(pt, 'In')
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i = 1
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if not self.element.parametersCollapsed():
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for param in [p for p in self.element.algorithm().parameterDefinitions() if not p.isDestination()]:
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if not param.flags() & QgsProcessingParameterDefinition.FlagHidden:
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text = self.getAdjustedText(param.description())
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h = -(fm.height() * 1.2) * (i + 1)
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h = h - ModelerGraphicItem.BOX_HEIGHT / 2.0 + 5
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pt = QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 33, h)
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painter.drawText(pt, text)
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i += 1
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h = fm.height() * 1.1
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h = h + ModelerGraphicItem.BOX_HEIGHT / 2.0
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pt = QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 25, h)
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painter.drawText(pt, 'Out')
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if not self.element.outputsCollapsed():
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for i, out in enumerate(self.element.algorithm().outputDefinitions()):
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text = self.getAdjustedText(out.description())
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h = fm.height() * 1.2 * (i + 2)
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h = h + ModelerGraphicItem.BOX_HEIGHT / 2.0
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pt = QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 33, h)
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painter.drawText(pt, text)
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if self.pixmap:
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painter.drawPixmap(-(ModelerGraphicItem.BOX_WIDTH / 2.0) + 3, -8,
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self.pixmap)
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elif self.picture:
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painter.drawPicture(-(ModelerGraphicItem.BOX_WIDTH / 2.0) + 3, -8,
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self.picture)
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def getLinkPointForParameter(self, paramIndex):
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offsetX = 25
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if isinstance(self.element, QgsProcessingModelChildAlgorithm) and self.element.parametersCollapsed():
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paramIndex = -1
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offsetX = 17
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if isinstance(self.element, QgsProcessingModelParameter):
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paramIndex = -1
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offsetX = 0
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font = QFont('Verdana', 8)
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font.setPixelSize(12)
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fm = QFontMetricsF(font)
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if isinstance(self.element, QgsProcessingModelChildAlgorithm):
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h = -(fm.height() * 1.2) * (paramIndex + 2) - fm.height() / 2.0 + 8
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h = h - ModelerGraphicItem.BOX_HEIGHT / 2.0
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else:
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h = 0
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return QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + offsetX, h)
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def getLinkPointForOutput(self, outputIndex):
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if isinstance(self.element, QgsProcessingModelChildAlgorithm) and self.element.algorithm().outputDefinitions():
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outputIndex = (outputIndex if not self.element.outputsCollapsed() else -1)
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text = self.getAdjustedText(self.element.algorithm().outputDefinitions()[outputIndex].description())
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font = QFont('Verdana', 8)
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font.setPixelSize(12)
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fm = QFontMetricsF(font)
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w = fm.width(text)
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h = fm.height() * 1.2 * (outputIndex + 1) + fm.height() / 2.0
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y = h + ModelerGraphicItem.BOX_HEIGHT / 2.0 + 5
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x = (-ModelerGraphicItem.BOX_WIDTH / 2 + 33 + w + 5
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if not self.element.outputsCollapsed()
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else 10)
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return QPointF(x, y)
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else:
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return QPointF(0, 0)
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def itemChange(self, change, value):
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if change == QGraphicsItem.ItemPositionHasChanged:
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for arrow in self.arrows:
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arrow.updatePath()
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self.element.setPosition(self.pos())
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# also need to update the model's stored component's position
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if isinstance(self.element, QgsProcessingModelChildAlgorithm):
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self.model.childAlgorithm(self.element.childId()).setPosition(self.pos())
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elif isinstance(self.element, QgsProcessingModelParameter):
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self.model.parameterComponent(self.element.parameterName()).setPosition(self.pos())
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elif isinstance(self.element, QgsProcessingModelOutput):
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self.model.childAlgorithm(self.element.childId()).modelOutput(self.element.name()).setPosition(self.pos())
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return value
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def polygon(self):
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font = QFont('Verdana', 8)
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font.setPixelSize(12)
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fm = QFontMetricsF(font)
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hUp = fm.height() * 1.2 * (len(self.element.parameters) + 2)
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hDown = fm.height() * 1.2 * (len(self.element.outputs) + 2)
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pol = QPolygonF([
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QPointF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
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-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp),
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QPointF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
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(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 + hDown),
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QPointF((ModelerGraphicItem.BOX_WIDTH + 2) / 2,
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(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 + hDown),
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QPointF((ModelerGraphicItem.BOX_WIDTH + 2) / 2,
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-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp),
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QPointF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
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-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp)
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])
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return pol
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class FlatButtonGraphicItem(QGraphicsItem):
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WIDTH = 16
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HEIGHT = 16
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def __init__(self, picture, position, action):
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super(FlatButtonGraphicItem, self).__init__(None)
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self.setAcceptHoverEvents(True)
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self.setFlag(QGraphicsItem.ItemIsMovable, False)
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self.picture = picture
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self.position = position
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self.isIn = False
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self.action = action
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def mousePressEvent(self, event):
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self.action()
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def paint(self, painter, option, widget=None):
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pt = QPointF(-math.floor(self.WIDTH / 2), -math.floor(self.HEIGHT / 2)) + self.position
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rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
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if self.isIn:
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painter.setPen(QPen(Qt.transparent, 1))
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painter.setBrush(QBrush(QColor(55, 55, 55, 33),
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Qt.SolidPattern))
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else:
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painter.setPen(QPen(Qt.transparent, 1))
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painter.setBrush(QBrush(Qt.transparent,
|
|
Qt.SolidPattern))
|
|
painter.drawRect(rect)
|
|
painter.drawPicture(pt.x(), pt.y(), self.picture)
|
|
|
|
def boundingRect(self):
|
|
rect = QRectF(self.position.x() - math.floor(self.WIDTH / 2),
|
|
self.position.y() - math.floor(self.HEIGHT / 2),
|
|
self.WIDTH,
|
|
self.HEIGHT)
|
|
return rect
|
|
|
|
def hoverEnterEvent(self, event):
|
|
self.isIn = True
|
|
self.update()
|
|
|
|
def hoverLeaveEvent(self, event):
|
|
self.isIn = False
|
|
self.update()
|
|
|
|
|
|
class FoldButtonGraphicItem(FlatButtonGraphicItem):
|
|
|
|
WIDTH = 11
|
|
HEIGHT = 11
|
|
|
|
def __init__(self, position, action, folded):
|
|
plus = QPicture()
|
|
minus = QPicture()
|
|
|
|
svg = QSvgRenderer(os.path.join(pluginPath, 'images', 'plus.svg'))
|
|
painter = QPainter(plus)
|
|
svg.render(painter)
|
|
svg = QSvgRenderer(os.path.join(pluginPath, 'images', 'minus.svg'))
|
|
painter = QPainter(minus)
|
|
svg.render(painter)
|
|
|
|
self.pictures = {True: plus,
|
|
False: minus}
|
|
|
|
self.folded = folded
|
|
picture = self.pictures[self.folded]
|
|
super(FoldButtonGraphicItem, self).__init__(picture, position, action)
|
|
|
|
def mousePressEvent(self, event):
|
|
self.folded = not self.folded
|
|
self.picture = self.pictures[self.folded]
|
|
self.action(self.folded)
|