# -*- coding: utf-8 -*-
"""
***************************************************************************
ModelerGraphicItem.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* 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__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
from PyQt4 import QtCore, QtGui
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.parameters.Parameter import Parameter
from processing.modeler.ModelerParameterDefinitionDialog import \
ModelerParameterDefinitionDialog
from processing.modeler.ModelerParametersDialog import ModelerParametersDialog
class ModelerGraphicItem(QtGui.QGraphicsItem):
BOX_HEIGHT = 30
BOX_WIDTH = 200
def __init__(self, element, elementIndex, model):
super(ModelerGraphicItem, self).__init__(None, None)
self.model = model
self.element = element
self.elementIndex = elementIndex
self.inputFolded = True
self.outputFolded = True
if isinstance(element, Parameter):
icon = QtGui.QIcon(os.path.dirname(__file__)
+ '/../images/input.png')
self.pixmap = icon.pixmap(20, 20, state=QtGui.QIcon.On)
self.text = element.description
elif isinstance(element, basestring):
# Output name
icon = QtGui.QIcon(os.path.dirname(__file__)
+ '/../images/output.png')
self.pixmap = icon.pixmap(20, 20, state=QtGui.QIcon.On)
self.text = element
else:
state = QtGui.QIcon.On
if self.elementIndex in self.model.deactivated:
state = QtGui.QIcon.Off
self.text = element.name
self.pixmap = element.getIcon().pixmap(15, 15, state=state)
self.arrows = []
self.setFlag(QtGui.QGraphicsItem.ItemIsMovable, True)
self.setFlag(QtGui.QGraphicsItem.ItemIsSelectable, True)
self.setZValue(1000)
if not isinstance(element, basestring):
icon = QtGui.QIcon(os.path.dirname(__file__)
+ '/../images/edit.png')
pt = QtCore.QPointF(ModelerGraphicItem.BOX_WIDTH / 2
- FlatButtonGraphicItem.WIDTH / 2,
ModelerGraphicItem.BOX_HEIGHT / 2
- FlatButtonGraphicItem.HEIGHT / 2 + 1)
self.editButton = FlatButtonGraphicItem(icon, pt, self.editElement)
self.editButton.setParentItem(self)
icon = QtGui.QIcon(os.path.dirname(__file__)
+ '/../images/delete.png')
pt = QtCore.QPointF(ModelerGraphicItem.BOX_WIDTH / 2
- FlatButtonGraphicItem.WIDTH / 2,
-ModelerGraphicItem.BOX_HEIGHT / 2
+ FlatButtonGraphicItem.HEIGHT / 2 + 1)
self.deleteButton = FlatButtonGraphicItem(icon, pt,
self.removeElement)
self.deleteButton.setParentItem(self)
if isinstance(element, GeoAlgorithm):
if element.parameters:
pt = self.getLinkPointForParameter(-1)
x = self.getXPositionForFoldButton()
pt = QtCore.QPointF(x, pt.y() + 2)
self.inButton = FoldButtonGraphicItem(pt, self.foldInput)
self.inButton.setParentItem(self)
if element.outputs:
pt = self.getLinkPointForOutput(-1)
x = self.getXPositionForFoldButton()
pt = QtCore.QPointF(x, pt.y() + 2)
self.outButton = FoldButtonGraphicItem(pt, self.foldOutput)
self.outButton.setParentItem(self)
def foldInput(self, folded):
self.inputFolded = folded
self.prepareGeometryChange()
if self.element.outputs:
pt = self.getLinkPointForOutput(-1)
x = self.getXPositionForFoldButton()
pt = QtCore.QPointF(x, pt.y())
self.outButton.position = pt
self.update()
def foldOutput(self, folded):
self.outputFolded = folded
self.prepareGeometryChange()
self.update()
def addArrow(self, arrow):
self.arrows.append(arrow)
def boundingRect(self):
font = QtGui.QFont('Verdana', 8)
fm = QtGui.QFontMetricsF(font)
numParams = (0 if self.inputFolded else len(self.element.parameters))
numOutputs = (0 if self.outputFolded else len(self.element.outputs))
hUp = fm.height() * 1.2 * (numParams + 2)
hDown = fm.height() * 1.2 * (numOutputs + 2)
rect = QtCore.QRectF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp,
ModelerGraphicItem.BOX_WIDTH + 2,
ModelerGraphicItem.BOX_HEIGHT + hDown + hUp)
return rect
def mouseDoubleClickEvent(self, event):
self.editElement()
def contextMenuEvent(self, event):
popupmenu = QtGui.QMenu()
removeAction = popupmenu.addAction('Remove')
removeAction.triggered.connect(self.removeElement)
editAction = popupmenu.addAction('Edit')
editAction.triggered.connect(self.editElement)
if isinstance(self.element, GeoAlgorithm):
if self.elementIndex in self.model.deactivated:
removeAction = popupmenu.addAction('Activate')
removeAction.triggered.connect(self.activateAlgorithm)
else:
deactivateAction = popupmenu.addAction('Deactivate')
deactivateAction.triggered.connect(self.deactivateAlgorithm)
popupmenu.exec_(event.screenPos())
def deactivateAlgorithm(self):
self.model.setPositions(self.scene().getParameterPositions(),
self.scene().getAlgorithmPositions(),
self.scene().getOutputPositions())
self.model.deactivateAlgorithm(self.elementIndex, True)
def activateAlgorithm(self):
self.model.setPositions(self.scene().getParameterPositions(),
self.scene().getAlgorithmPositions(),
self.scene().getOutputPositions())
if not self.model.activateAlgorithm(self.elementIndex, True):
QtGui.QMessageBox.warning(None, 'Could not activate Algorithm',
'The selected algorithm depends on other currently \
non-active algorithms.\nActivate them them before trying \
to activate it.')
def editElement(self):
self.model.setPositions(self.scene().getParameterPositions(),
self.scene().getAlgorithmPositions(),
self.scene().getOutputPositions())
if isinstance(self.element, Parameter):
dlg = ModelerParameterDefinitionDialog(self.model,
param=self.element)
dlg.exec_()
if dlg.param is not None:
self.model.updateParameter(self.elementIndex, dlg.param)
self.element = dlg.param
self.text = self.element.description
self.update()
elif isinstance(self.element, GeoAlgorithm):
dlg = self.element.getCustomModelerParametersDialog(self.model,
self.elementIndex)
if not dlg:
dlg = ModelerParametersDialog(self.element, self.model,
self.elementIndex)
dlg.exec_()
if dlg.params is not None:
self.model.updateAlgorithm(self.elementIndex, dlg.params,
dlg.values, dlg.outputs, dlg.dependencies)
def removeElement(self):
if isinstance(self.element, Parameter):
if not self.model.removeParameter(self.elementIndex):
QtGui.QMessageBox.warning(None, 'Could not remove element',
'Other elements depend on the selected one.\nRemove \
them before trying to remove it.')
elif isinstance(self.element, GeoAlgorithm):
if not self.model.removeAlgorithm(self.elementIndex):
QtGui.QMessageBox.warning(None, 'Could not remove element',
'Other elements depend on the selected one.\nRemove \
them before trying to remove it.')
def getAdjustedText(self, text):
font = QtGui.QFont('Verdana', 8)
fm = QtGui.QFontMetricsF(font)
w = fm.width(text)
if w < self.BOX_WIDTH - 25 - FlatButtonGraphicItem.WIDTH:
return text
text = text[0:-3] + '...'
w = fm.width(text)
while w > self.BOX_WIDTH - 25 - FlatButtonGraphicItem.WIDTH:
text = text[0:-4] + '...'
w = fm.width(text)
return text
def paint(self, painter, option, widget=None):
rect = QtCore.QRectF(-(ModelerGraphicItem.BOX_WIDTH + 2) / 2.0,
-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2.0,
ModelerGraphicItem.BOX_WIDTH + 2,
ModelerGraphicItem.BOX_HEIGHT + 2)
painter.setPen(QtGui.QPen(QtCore.Qt.gray, 1))
color = QtGui.QColor(125, 232, 232)
if isinstance(self.element, Parameter):
color = QtGui.QColor(179, 179, 255)
elif isinstance(self.element, GeoAlgorithm):
color = QtCore.Qt.white
painter.setBrush(QtGui.QBrush(color, QtCore.Qt.SolidPattern))
painter.drawRect(rect)
font = QtGui.QFont('Verdana', 8)
painter.setFont(font)
painter.setPen(QtGui.QPen(QtCore.Qt.black))
if self.isSelected():
painter.setPen(QtGui.QPen(QtCore.Qt.blue))
if isinstance(self.element, GeoAlgorithm):
if self.elementIndex in self.model.deactivated:
painter.setPen(QtGui.QPen(QtCore.Qt.lightGray))
fm = QtGui.QFontMetricsF(font)
text = self.getAdjustedText(self.text)
h = fm.height()
pt = QtCore.QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 25, h / 2.0)
painter.drawText(pt, text)
painter.setPen(QtGui.QPen(QtCore.Qt.black))
if isinstance(self.element, GeoAlgorithm):
h = -(fm.height() * 1.2)
h = h - ModelerGraphicItem.BOX_HEIGHT / 2.0 + 5
pt = QtCore.QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 25, h)
painter.drawText(pt, 'In')
i = 1
if not self.inputFolded:
for param in self.element.parameters:
text = self.getAdjustedText(param.description)
h = -(fm.height() * 1.2) * (i + 1)
h = h - ModelerGraphicItem.BOX_HEIGHT / 2.0 + 5
pt = QtCore.QPointF(-ModelerGraphicItem.BOX_WIDTH / 2
+ 33, h)
painter.drawText(pt, text)
i += 1
i = 1
h = fm.height() * 1.2
h = h + ModelerGraphicItem.BOX_HEIGHT / 2.0
pt = QtCore.QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + 25, h)
painter.drawText(pt, 'Out')
if not self.outputFolded:
for out in self.element.outputs:
text = self.getAdjustedText(out.description)
h = fm.height() * 1.2 * (i + 1)
h = h + ModelerGraphicItem.BOX_HEIGHT / 2.0
pt = QtCore.QPointF(-ModelerGraphicItem.BOX_WIDTH / 2
+ 33, h)
painter.drawText(pt, text)
i += 1
if self.pixmap:
painter.drawPixmap(-(ModelerGraphicItem.BOX_WIDTH / 2.0) + 3, -8,
self.pixmap)
def getLinkPointForParameter(self, paramIndex):
offsetX = 25
if self.inputFolded:
paramIndex = -1
offsetX = 17
font = QtGui.QFont('Verdana', 8)
fm = QtGui.QFontMetricsF(font)
if isinstance(self.element, GeoAlgorithm):
h = -(fm.height() * 1.2) * (paramIndex + 2) - fm.height() / 2.0 + 8
h = h - ModelerGraphicItem.BOX_HEIGHT / 2.0
else:
h = 0
return QtCore.QPointF(-ModelerGraphicItem.BOX_WIDTH / 2 + offsetX, h)
def getXPositionForFoldButton(self):
return 0
def getLinkPointForOutput(self, outputIndex):
if isinstance(self.element, GeoAlgorithm):
numParams = 0
outputIndex = (outputIndex if not self.outputFolded else -1)
text = self.getAdjustedText(
self.element.outputs[outputIndex].description)
font = QtGui.QFont('Verdana', 8)
fm = QtGui.QFontMetricsF(font)
w = fm.width(text)
h = fm.height() * 1.2 * (outputIndex + 1) + fm.height() / 2.0
y = h + ModelerGraphicItem.BOX_HEIGHT / 2.0 + 5
x = (-ModelerGraphicItem.BOX_WIDTH / 2 + 33 + w
+ 5 if not self.outputFolded else 10)
return QtCore.QPointF(x, y)
else:
return QtCore.QPointF(0, 0)
def itemChange(self, change, value):
if change == QtGui.QGraphicsItem.ItemPositionChange:
for arrow in self.arrows:
arrow.updatePosition()
return value
def polygon(self):
font = QtGui.QFont('Verdana', 8)
fm = QtGui.QFontMetricsF(font)
hUp = fm.height() * 1.2 * (len(self.element.parameters) + 2)
hDown = fm.height() * 1.2 * (len(self.element.outputs) + 2)
pol = QtGui.QPolygonF([
QtCore.QPointF(
-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp),
QtCore.QPointF(
-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 + hDown),
QtCore.QPointF(
(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 + hDown),
QtCore.QPointF(
(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp),
QtCore.QPointF(
-(ModelerGraphicItem.BOX_WIDTH + 2) / 2,
-(ModelerGraphicItem.BOX_HEIGHT + 2) / 2 - hUp)])
return pol
class FlatButtonGraphicItem(QtGui.QGraphicsItem):
WIDTH = 16
HEIGHT = 16
def __init__(self, icon, position, action):
super(FlatButtonGraphicItem, self).__init__(None, None)
self.setAcceptHoverEvents(True)
self.setFlag(QtGui.QGraphicsItem.ItemIsMovable, False)
self.pixmap = icon.pixmap(self.WIDTH, self.HEIGHT,
state=QtGui.QIcon.On)
self.position = position
self.isIn = False
self.action = action
def mousePressEvent(self, event):
self.action()
def paint(self, painter, option, widget=None):
pt = QtCore.QPointF(-self.WIDTH / 2, -self.HEIGHT / 2) + self.position
rect = QtCore.QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QtGui.QPen(QtCore.Qt.transparent, 1))
painter.setBrush(QtGui.QBrush(QtCore.Qt.lightGray,
QtCore.Qt.SolidPattern))
else:
painter.setPen(QtGui.QPen(QtCore.Qt.transparent, 1))
painter.setBrush(QtGui.QBrush(QtCore.Qt.transparent,
QtCore.Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPixmap(pt.x(), pt.y(), self.pixmap)
def boundingRect(self):
rect = QtCore.QRectF(self.position.x() - self.WIDTH / 2,
self.position.y() - 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
icons = {True: QtGui.QIcon(os.path.dirname(__file__)
+ '/../images/plus.png'),
False: QtGui.QIcon(os.path.dirname(__file__)
+ '/../images/minus.png')}
def __init__(self, position, action):
self.folded = True
icon = self.icons[True]
super(FoldButtonGraphicItem, self).__init__(icon, position, action)
def mousePressEvent(self, event):
self.folded = not self.folded
icon = self.icons[self.folded]
self.pixmap = icon.pixmap(self.WIDTH, self.HEIGHT,
state=QtGui.QIcon.On)
self.action(self.folded)