Macro PCBWay

Description

This macro sends the currently selected object (mesh, shape or body) to the PCBWay website to get an instant quote for manufacturing through CNC milling, laser cutting or 3D printing. After the object is sent, a page will be opened on the PCBWay website to allow the user to adjust details and options.

Note: Mesh-based objects can only be manufactured through 3D printing. For CNC milling or laser cutting, you must use shape-based objects.

# This code is copied instead of the original macro code
# to guide the user to the online download page.
# Use it if the code of the macro is larger than 64 KB and cannot be included in the wiki
# or if the RAW code URL is somewhere else in the wiki.

from PySide import QtGui, QtCore

diag = QtGui.QMessageBox(QtGui.QMessageBox.Information,
    "Information",
    "This macro must be downloaded from this link\n"
    "\n"
    "https://raw.githubusercontent.com/FreeCAD/FreeCAD-macros/master/Utility/pcbway.FCMacro" + "\n"
    "\n"
    "Quit this window to access the download page")

diag.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
diag.setWindowModality(QtCore.Qt.ApplicationModal)
diag.exec_()

import webbrowser 
webbrowser.open("https://raw.githubusercontent.com/FreeCAD/FreeCAD-macros/master/Utility/pcbway.FCMacro")

Usage

1. Open or create a FreeCAD document containing an object you wish to manufacture with PCBWay.
2. Select the object you wish to manufacture. If no object is selected but there is only one visible object on screen, that object will be sent.
3. Open the Macros manager under menu Macro → Macros....
4. Select the PCBWay macro from the list.
5. Click Execute.
6. Next times, the PCBWay macro will be under menu Macro → Recent macros.
7. Your object will be packed in the STEP format for shapes or the OBJ format for meshes, and sent to PCBWay. A browser window will then open for you to fill out additional details and place an order for your product.

Code

The latest version of the macro is to be found at https://github.com/FreeCAD/FreeCAD-macros/blob/master/Utility/pcbway.FCMacro

Macro_PCBWay.FCMacro

#***************************************************************************
#*                                                                         *
#*   Copyright (c) 2022 Yorik van Havre <yorik@uncreated.net>              *
#*                                                                         *
#*   This program is free software; you can redistribute it and/or modify  *
#*   it under the terms of the GNU Lesser General Public License (LGPL)    *
#*   as published by the Free Software Foundation; either version 2 of     *
#*   the License, or (at your option) any later version.                   *
#*   for detail see the LICENCE text file.                                 *
#*                                                                         *
#*   This program is distributed in the hope that it will be useful,       *
#*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
#*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
#*   GNU Library General Public License for more details.                  *
#*                                                                         *
#*   You should have received a copy of the GNU Library General Public     *
#*   License along with this program; if not, write to the Free Software   *
#*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
#*   USA                                                                   *
#*                                                                         *
#***************************************************************************

"""
PCBWay Macro for FreeCAD

https://pcbway.com

This macro sends the currently selected object to the PCBWay website
to get an instant quote for manufacturing. After the object is sent,
a page will be opened on the PCBWay website to allow the user to adjust
details and options.
"""

# code inspired / borrowed from:
# KiCAD PcbWay plugin: https://github.com/pcbway/PCBWay-Plug-in-for-Kicad/blob/main/plugins/thread.py
# urllib-based upload: http://pymotw.com/2/urllib2/#uploading-files
# mime stuff: https://stackoverflow.com/questions/27099290/where-is-mimetools-choose-boundary-function-in-python3#27174474

# version history:
# version 1.0 - 2022.07.22

__title__   = "Macro_PCBWay"
__author__  = "Yorik van Havre"
__wiki__    = "https://www.freecad.org/wiki/Macro_PCBWay"
__url__     = "https://www.pcbway.com"
__version__ = "1.0"
__date__    = "22/07/2022"


import tempfile
import os
import FreeCAD
import FreeCADGui
import json
import webbrowser
import urllib.request
import urllib.parse
import email.generator
import itertools


pcb_url = "https://www.pcbway.com/common/freecadupfile"


def msg(message):

    """prints a message where appropriate"""

    FreeCAD.Console.PrintError(message+"\n")
    if FreeCAD.GuiUp:
        from PySide import QtGui
        reply = QtGui.QMessageBox.critical(None,"PCBWay export",message)


class MultiPartData(object):

    """Gathers data and files to be sent via HTTP POST"""

    def __init__(self):
        self.form_fields = []
        self.files = []
        self.boundary = email.generator._make_boundary()
        self.add_field("Unit","Millimeter") #FreeCAD's boundboxes are always in mm
        return

    def get_content_type(self):
        return 'multipart/form-data; boundary=%s' % self.boundary

    def add_field(self, name, value):
        """Add a simple field to the form data."""
        self.form_fields.append((name, str(value)))
        return

    def add_file(self, fieldname, filename, fileHandle, mime):
        """Add a file to be uploaded."""
        body = fileHandle.read()
        self.files.append((fieldname, filename, mime, body))
        return

    def get_bytes(self):
        """Return a string representing the form data, including attached files."""
        parts = []
        part_boundary = '--' + self.boundary
        parts.extend([part_boundary,'Content-Disposition: form-data; name="%s"' % name,'',value] for name, value in self.form_fields)
        parts.extend([part_boundary,'Content-Disposition: file; name="%s"; filename="%s"' % (field_name, filename),
                                    'Content-Type: %s' % content_type,'',body] for field_name, filename, content_type, body in self.files)
        flattened = list(itertools.chain(*parts))
        flattened.append('--' + self.boundary + '--')
        flattened.append('')
        return bytes('\r\n'.join(flattened),'utf8')


def main():

    # validity tests
    mesh = None
    shape = None
    if not FreeCAD.GuiUp:
        return
    if not FreeCAD.ActiveDocument:
        msg("There is no opened document. Please open or create a document containing objects before running this macro.")
        return
    # get the selected object, or the only visible body or object if nothing is selected
    selection = FreeCADGui.Selection.getSelection()
    if not selection:
        visibles = [obj for obj in FreeCAD.ActiveDocument.Objects if obj.ViewObject.Visibility]
        if len(visibles) == 1:
            obj = visibles[0]
            if hasattr(obj,"Shape"):
                shape = obj.Shape
            elif hasattr(obj,"Mesh"):
                mesh = obj.Mesh
        elif len(visibles) > 1:
            bodies = [obj for obj in visibles if obj.isDerivedFrom("PartDesign::Body")]
            if len(bodies) == 1:
                shape = bodies[0].Shape
            else:
                msg("No object is selected. Please select one object or body before running this macro.")
                return
    elif len(selection) > 1:
        msg("More than one object is selected. Please select only one object or body before running this macro.")
        return
    else:
        obj = selection[0]
        if hasattr(obj,"Shape"):
            shape = obj.Shape
            if (not shape) or (not hasattr(shape,"isNull")) or shape.isNull():
                msg("The selected object has no shape. Please select an object with a shape before running this macro.")
                return
        elif hasattr(obj,"Mesh"):
            mesh = obj.Mesh
    if (not shape) and (not mesh):
        msg("Unable to find a suitable shape in the selection or in the visible objects. Please select an object before running this macro.")
        return

    # offer to add the macro as a button on first run
    # not working yet!
    # prefs = FreeCAD.ParamGet("User parameter:Plugins/PCBWay")
    # if prefs.GetBool("FirstTime",True):
    #    prefs.SetBool("FirstTime",False)
    #    from PySide import QtGui
    #    reply = QtGui.QMessageBox.question(None, "Install macro?",
    #        "This is the first time you are launching the PCBWay macro. Do you wish to add a toolbar button for it?",
    #        QtGui.QMessageBox.Yes