postageStamp.py

#This Source Code Form is subject to the terms of the Mozilla Public
#License, v. 2.0. If a copy of the MPL was not distributed with this
#file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#Created by Fabrice Fernandez on 26/07/2019.
#Modified by alexandre bon on 2021/09/02: reliable appGui retrievement / warning with no selection / reduce spacing

import os
import string
import NatronEngine
from NatronGui import *

# CREATE A POSTAGE STAMP #




def postageStamp( nodes_spacing_y = 100 , hideInputValue = True , previewValue = True ,nodeLabel = 'Postage Stamp'):

	# get current Natron instance running in memory #
	# app = natron.getGuiInstance(0)
	myApp = natron.getActiveInstance()
	app = natron.getGuiInstance( myApp.getAppID() )

	# get selected nodes # 
	selectedNodes = app.getSelectedNodes()
	if len(selectedNodes) == 0:
		warning = natron.warningDialog("Warning","Select at least one node.Each one will get it's own postage stamp")
	else :
		# cycle through every selected node #
		for currentNode in selectedNodes:

			# get current node position #
			currentPosition = currentNode.getPosition()

			# get current node color #
			currentNodeColor = currentNode.getColor()




			# create 'Group' node #
			postageStamp = app.createNode('fr.inria.built-in.Group')

			# set 'Group' position #
			postageStamp.setPosition(currentPosition[0] , currentPosition[1] + nodes_spacing_y)

			# set 'Group' label #
			postageStamp.setLabel(nodeLabel)

			# connect 'Group' #
			postageStamp.connectInput(0,currentNode)

			# enable preview #
			postageStamp.getParam('enablePreview').setValue(1)

			# set 'Group' color #
			postageStamp.setColor(currentNodeColor[0] , currentNodeColor[1] , currentNodeColor[2])

			# add 'Controls' page #
			controlsPage = postageStamp.createPageParam("Controls", "Controls")

			line01 = postageStamp.createStringParam("line01","")
			line01.setType(NatronEngine.StringParam.TypeEnum.eStringTypeLabel)
			line02 = postageStamp.createStringParam("line02","")
			line02.setType(NatronEngine.StringParam.TypeEnum.eStringTypeLabel)

			hideCheckbox = postageStamp.createBooleanParam("hideCheckbox", "Hide input : ")
			hideCheckbox.set(hideInputValue)

			previewCheckbox = postageStamp.createBooleanParam("previewCheckbox", "Enable preview : ")
			previewCheckbox.setAddNewLine(False)
			previewCheckbox.set(previewValue)

			line03 = postageStamp.createStringParam("line03","")
			line03.setType(NatronEngine.StringParam.TypeEnum.eStringTypeLabel)
			line04 = postageStamp.createStringParam("line04","")
			line04.setType(NatronEngine.StringParam.TypeEnum.eStringTypeLabel)

			pagesOrder = ('Controls','Node')
			postageStamp.setPagesOrder(pagesOrder)

			# hide inputs #
			postageStamp.getParam('hideInputs').setExpression( 'thisNode.hideCheckbox.get()' , False , 0)

			# enable preview
			postageStamp.getParam('enablePreview').setExpression( 'thisNode.previewCheckbox.get()' , False , 0)

			# close pane that pops up at 'Group' creation time #
			currentPane = app.getTabWidget('pane3')
			currentPane.closeCurrentTab()

			# select postageStamp node #
			app.selectNode(postageStamp , True)

# launch inside Natron Script Editor
# postageStamp()