FlatCAM/flatcamTools/ToolSolderPaste.py

from FlatCAMTool import FlatCAMTool
from copy import copy,deepcopy
from ObjectCollection import *
from FlatCAMApp import *
from PyQt5 import QtGui, QtCore, QtWidgets
from GUIElements import IntEntry, RadioSet, LengthEntry

from FlatCAMObj import FlatCAMGeometry, FlatCAMExcellon, FlatCAMGerber


class ToolSolderPaste(FlatCAMTool):

    toolName = "Solder Paste Tool"

    def __init__(self, app):
        FlatCAMTool.__init__(self, app)

        ## Title
        title_label = QtWidgets.QLabel("%s" % self.toolName)
        title_label.setStyleSheet("""
                        QLabel
                        {
                            font-size: 16px;
                            font-weight: bold;
                        }
                        """)
        self.layout.addWidget(title_label)

        ## Form Layout
        obj_form_layout = QtWidgets.QFormLayout()
        self.layout.addLayout(obj_form_layout)

        ## Gerber Object to be used for solderpaste dispensing
        self.obj_combo = QtWidgets.QComboBox()
        self.obj_combo.setModel(self.app.collection)
        self.obj_combo.setRootModelIndex(self.app.collection.index(0, 0, QtCore.QModelIndex()))
        self.obj_combo.setCurrentIndex(1)

        self.object_label = QtWidgets.QLabel("Gerber:   ")
        self.object_label.setToolTip(
            "Gerber Solder paste object.                        "
        )
        obj_form_layout.addRow(self.object_label, self.obj_combo)

        #### Tools ####
        self.tools_table_label = QtWidgets.QLabel('<b>Tools Table</b>')
        self.tools_table_label.setToolTip(
            "Tools pool from which the algorithm\n"
            "will pick the ones used for dispensing solder paste."
        )
        self.layout.addWidget(self.tools_table_label)

        self.tools_table = FCTable()
        self.layout.addWidget(self.tools_table)

        self.tools_table.setColumnCount(3)
        self.tools_table.setHorizontalHeaderLabels(['#', 'Diameter', ''])
        self.tools_table.setColumnHidden(2, True)
        self.tools_table.setSortingEnabled(False)
        # self.tools_table.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)

        self.tools_table.horizontalHeaderItem(0).setToolTip(
            "This is the Tool Number.\n"
            "The solder dispensing will start with the tool with the biggest \n"
            "diameter, continuing until there are no more Nozzle tools.\n"
            "If there are no longer tools but there are still pads not covered\n "
            "with solder paste, the app will issue a warning message box."
            )
        self.tools_table.horizontalHeaderItem(1).setToolTip(
            "Nozzle tool Diameter. It's value (in current FlatCAM units)\n"
            "is the width of the solder paste dispensed.")

        self.empty_label = QtWidgets.QLabel('')
        self.layout.addWidget(self.empty_label)

        #### Add a new Tool ####
        hlay_tools = QtWidgets.QHBoxLayout()
        self.layout.addLayout(hlay_tools)

        self.addtool_entry_lbl = QtWidgets.QLabel('<b>Nozzle Dia:</b>')
        self.addtool_entry_lbl.setToolTip(
            "Diameter for the new Nozzle tool to add in the Tool Table"
        )
        self.addtool_entry = FCEntry()

        # hlay.addWidget(self.addtool_label)
        # hlay.addStretch()
        hlay_tools.addWidget(self.addtool_entry_lbl)
        hlay_tools.addWidget(self.addtool_entry)

        grid0 = QtWidgets.QGridLayout()
        self.layout.addLayout(grid0)

        self.addtool_btn = QtWidgets.QPushButton('Add')
        self.addtool_btn.setToolTip(
            "Add a new nozzle tool to the Tool Table\n"
            "with the diameter specified above."
        )

        self.deltool_btn = QtWidgets.QPushButton('Delete')
        self.deltool_btn.setToolTip(
            "Delete a selection of tools in the Tool Table\n"
            "by first selecting a row(s) in the Tool Table."
        )

        self.soldergeo_btn = QtWidgets.QPushButton("Generate Geo")
        self.soldergeo_btn.setToolTip(
            "Generate solder paste dispensing geometry."
        )

        grid0.addWidget(self.addtool_btn, 0, 0)
        # grid2.addWidget(self.copytool_btn, 0, 1)
        grid0.addWidget(self.deltool_btn, 0, 2)
        grid0.addWidget(self.soldergeo_btn, 2, 2)

        ## Form Layout
        geo_form_layout = QtWidgets.QFormLayout()
        self.layout.addLayout(geo_form_layout)

        ## Gerber Object to be used for solderpaste dispensing
        self.geo_obj_combo = QtWidgets.QComboBox()
        self.geo_obj_combo.setModel(self.app.collection)
        self.geo_obj_combo.setRootModelIndex(self.app.collection.index(2, 0, QtCore.QModelIndex()))
        self.geo_obj_combo.setCurrentIndex(1)

        self.geo_object_label = QtWidgets.QLabel("Geometry:")
        self.geo_object_label.setToolTip(
            "Geometry Solder paste object.\n"
            "In order to enable the GCode generation section,\n"
            "the name of the object has to end in:\n"
            "'_solderpaste' as a protection."
        )
        geo_form_layout.addRow(self.geo_object_label, self.geo_obj_combo)

        self.gcode_frame = QtWidgets.QFrame()
        self.gcode_frame.setContentsMargins(0, 0, 0, 0)
        self.layout.addWidget(self.gcode_frame)
        self.gcode_box = QtWidgets.QVBoxLayout()
        self.gcode_box.setContentsMargins(0, 0, 0, 0)
        self.gcode_frame.setLayout(self.gcode_box)

        ## Form Layout
        form_layout = QtWidgets.QFormLayout()
        self.gcode_box.addLayout(form_layout)

        # Z dispense start
        self.z_start_entry = FCEntry()
        self.z_start_label = QtWidgets.QLabel("Z Dispense Start:")
        self.z_start_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.z_start_label, self.z_start_entry)

        # Z dispense
        self.z_dispense_entry = FCEntry()
        self.z_dispense_label = QtWidgets.QLabel("Z Dispense:")
        self.z_dispense_label.setToolTip(
            "Margin over bounds. A positive value here\n"
            "will make the cutout of the PCB further from\n"
            "the actual PCB border"
        )
        form_layout.addRow(self.z_dispense_label, self.z_dispense_entry)

        # Z dispense stop
        self.z_stop_entry = FCEntry()
        self.z_stop_label = QtWidgets.QLabel("Z Dispense Stop:")
        self.z_stop_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.z_stop_label, self.z_stop_entry)

        # Z travel
        self.z_travel_entry = FCEntry()
        self.z_travel_label = QtWidgets.QLabel("Z Travel:")
        self.z_travel_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.z_travel_label, self.z_travel_entry)

        # Feedrate X-Y
        self.frxy_entry = FCEntry()
        self.frxy_label = QtWidgets.QLabel("Feedrate X-Y:")
        self.frxy_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.frxy_label, self.frxy_entry)

        # Feedrate Z
        self.frz_entry = FCEntry()
        self.frz_label = QtWidgets.QLabel("Feedrate Z:")
        self.frz_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.frz_label, self.frz_entry)

        # Spindle Speed Forward
        self.speedfwd_entry = FCEntry()
        self.speedfwd_label = QtWidgets.QLabel("Spindle Speed FWD:")
        self.speedfwd_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.speedfwd_label, self.speedfwd_entry)

        # Dwell Forward
        self.dwellfwd_entry = FCEntry()
        self.dwellfwd_label = QtWidgets.QLabel("Dwell FWD:")
        self.dwellfwd_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.dwellfwd_label, self.dwellfwd_entry)

        # Spindle Speed Reverse
        self.speedrev_entry = FCEntry()
        self.speedrev_label = QtWidgets.QLabel("Spindle Speed REV:")
        self.speedrev_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.speedrev_label, self.speedrev_entry)

        # Dwell Reverse
        self.dwellrev_entry = FCEntry()
        self.dwellrev_label = QtWidgets.QLabel("Dwell REV:")
        self.dwellrev_label.setToolTip(
            "The size of the gaps in the cutout\n"
            "used to keep the board connected to\n"
            "the surrounding material (the one \n"
            "from which the PCB is cutout)."
        )
        form_layout.addRow(self.dwellrev_label, self.dwellrev_entry)

        # Postprocessors
        pp_label = QtWidgets.QLabel('PostProcessors:')
        pp_label.setToolTip(
            "Files that control the GCoe generation."
        )

        self.pp_combo = FCComboBox()
        pp_items = [1, 2, 3, 4, 5]
        for it in pp_items:
            self.pp_combo.addItem(str(it))
            self.pp_combo.setStyleSheet('background-color: rgb(255,255,255)')
        form_layout.addRow(pp_label, self.pp_combo)

        ## Buttons
        hlay = QtWidgets.QHBoxLayout()
        self.gcode_box.addLayout(hlay)

        hlay.addStretch()

        self.solder_gcode = QtWidgets.QPushButton("Generate GCode")
        self.solder_gcode.setToolTip(
            "Generate GCode to dispense Solder Paste\n"
            "on PCB pads."
        )
        hlay.addWidget(self.solder_gcode)

        self.layout.addStretch()

        self.gcode_frame.setDisabled(True)

        self.tools = {}
        self.tooluid = 0

        ## Signals
        self.addtool_btn.clicked.connect(self.on_tool_add)
        self.deltool_btn.clicked.connect(self.on_tool_delete)
        self.soldergeo_btn.clicked.connect(self.on_create_geo)
        self.solder_gcode.clicked.connect(self.on_create_gcode)
        self.geo_obj_combo.currentIndexChanged.connect(self.on_geo_select)

    def run(self):
        self.app.report_usage("ToolSolderPaste()")

        FlatCAMTool.run(self)
        self.set_tool_ui()

        # if the splitter us hidden, display it
        if self.app.ui.splitter.sizes()[0] == 0:
            self.app.ui.splitter.setSizes([1, 1])

        self.build_ui()
        self.app.ui.notebook.setTabText(2, "SolderPaste Tool")

    def install(self, icon=None, separator=None, **kwargs):
        FlatCAMTool.install(self, icon, separator, shortcut='ALT+K', **kwargs)

    def set_tool_ui(self):

        # self.ncc_overlap_entry.set_value(self.app.defaults["tools_nccoverlap"])
        # self.ncc_margin_entry.set_value(self.app.defaults["tools_nccmargin"])
        # self.ncc_method_radio.set_value(self.app.defaults["tools_nccmethod"])
        # self.ncc_connect_cb.set_value(self.app.defaults["tools_nccconnect"])
        # self.ncc_contour_cb.set_value(self.app.defaults["tools_ncccontour"])
        # self.ncc_rest_cb.set_value(self.app.defaults["tools_nccrest"])

        self.tools_table.setupContextMenu()
        self.tools_table.addContextMenu(
            "Add", lambda: self.on_tool_add(dia=None, muted=None), icon=QtGui.QIcon("share/plus16.png"))
        self.tools_table.addContextMenu(
            "Delete", lambda:
            self.on_tool_delete(rows_to_delete=None, all=None), icon=QtGui.QIcon("share/delete32.png"))

        try:
            dias = [float(eval(dia)) for dia in self.app.defaults["tools_solderpaste_tools"].split(",")]
        except:
            log.error("At least one Nozzle tool diameter needed. "
                      "Verify in Edit -> Preferences -> TOOLS -> Solder Paste Tools.")
            return

        self.tooluid = 0

        self.tools.clear()
        for tool_dia in dias:
            self.tooluid += 1
            self.tools.update({
                int(self.tooluid): {
                    'tooldia': float('%.4f' % tool_dia),
                    'solid_geometry': []
                }
            })

        self.name = ""
        self.obj = None

        self.units = self.app.general_options_form.general_app_group.units_radio.get_value().upper()
        self.reset_fields()

    def build_ui(self):
        self.ui_disconnect()

        # updated units
        self.units = self.app.general_options_form.general_app_group.units_radio.get_value().upper()

        if self.units == "IN":
            self.addtool_entry.set_value(0.039)
        else:
            self.addtool_entry.set_value(1)

        sorted_tools = []
        for k, v in self.tools.items():
            sorted_tools.append(float('%.4f' % float(v['tooldia'])))
        sorted_tools.sort(reverse=True)

        n = len(sorted_tools)
        self.tools_table.setRowCount(n)
        tool_id = 0

        for tool_sorted in sorted_tools:
            for tooluid_key, tooluid_value in self.tools.items():
                if float('%.4f' % tooluid_value['tooldia']) == tool_sorted:
                    tool_id += 1
                    id = QtWidgets.QTableWidgetItem('%d' % int(tool_id))
                    id.setFlags(QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEnabled)
                    row_no = tool_id - 1
                    self.tools_table.setItem(row_no, 0, id)  # Tool name/id

                    # Make sure that the drill diameter when in MM is with no more than 2 decimals
                    # There are no drill bits in MM with more than 3 decimals diameter
                    # For INCH the decimals should be no more than 3. There are no drills under 10mils
                    if self.units == 'MM':
                        dia = QtWidgets.QTableWidgetItem('%.2f' % tooluid_value['tooldia'])
                    else:
                        dia = QtWidgets.QTableWidgetItem('%.3f' % tooluid_value['tooldia'])

                    dia.setFlags(QtCore.Qt.ItemIsEnabled)

                    tool_uid_item = QtWidgets.QTableWidgetItem(str(int(tooluid_key)))

                    self.tools_table.setItem(row_no, 1, dia)  # Diameter

                    self.tools_table.setItem(row_no, 2, tool_uid_item)  # Tool unique ID

        # make the diameter column editable
        for row in range(tool_id):
            self.tools_table.item(row, 1).setFlags(
                QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEnabled)

        # all the tools are selected by default
        self.tools_table.selectColumn(0)
        #
        self.tools_table.resizeColumnsToContents()
        self.tools_table.resizeRowsToContents()

        vertical_header = self.tools_table.verticalHeader()
        vertical_header.hide()
        self.tools_table.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)

        horizontal_header = self.tools_table.horizontalHeader()
        horizontal_header.setMinimumSectionSize(10)
        horizontal_header.setSectionResizeMode(0, QtWidgets.QHeaderView.Fixed)
        horizontal_header.resizeSection(0, 20)
        horizontal_header.setSectionResizeMode(1, QtWidgets.QHeaderView.Stretch)

        # self.tools_table.setSortingEnabled(True)
        # sort by tool diameter
        # self.tools_table.sortItems(1)

        self.tools_table.setMinimumHeight(self.tools_table.getHeight())
        self.tools_table.setMaximumHeight(self.tools_table.getHeight())

        self.ui_connect()

    def ui_connect(self):
        self.tools_table.itemChanged.connect(self.on_tool_edit)

    def ui_disconnect(self):
        try:
            # if connected, disconnect the signal from the slot on item_changed as it creates issues
            self.tools_table.itemChanged.disconnect(self.on_tool_edit)
        except:
            pass

    def on_tool_add(self, dia=None, muted=None):

        self.ui_disconnect()

        if dia:
            tool_dia = dia
        else:
            try:
                tool_dia = float(self.addtool_entry.get_value())
            except ValueError:
                # try to convert comma to decimal point. if it's still not working error message and return
                try:
                    tool_dia = float(self.addtool_entry.get_value().replace(',', '.'))
                except ValueError:
                    self.app.inform.emit("[ERROR_NOTCL]Wrong value format entered, "
                                         "use a number.")
                    return
            if tool_dia is None:
                self.build_ui()
                self.app.inform.emit("[WARNING_NOTCL] Please enter a tool diameter to add, in Float format.")
                return

        if tool_dia == 0:
            self.app.inform.emit("[WARNING_NOTCL] Please enter a tool diameter with non-zero value, in Float format.")
            return

        # construct a list of all 'tooluid' in the self.tools
        tool_uid_list = []
        for tooluid_key in self.tools:
            tool_uid_item = int(tooluid_key)
            tool_uid_list.append(tool_uid_item)

        # find maximum from the temp_uid, add 1 and this is the new 'tooluid'
        if not tool_uid_list:
            max_uid = 0
        else:
            max_uid = max(tool_uid_list)
        self.tooluid = int(max_uid + 1)

        tool_dias = []
        for k, v in self.tools.items():
            for tool_v in v.keys():
                if tool_v == 'tooldia':
                    tool_dias.append(float('%.4f' % v[tool_v]))

        if float('%.4f' % tool_dia) in tool_dias:
            if muted is None:
                self.app.inform.emit("[WARNING_NOTCL]Adding Nozzle tool cancelled. Tool already in Tool Table.")
            self.tools_table.itemChanged.connect(self.on_tool_edit)
            return
        else:
            if muted is None:
                self.app.inform.emit("[success] New Nozzle tool added to Tool Table.")
            self.tools.update({
                int(self.tooluid): {
                    'tooldia': float('%.4f' % tool_dia),
                    'solid_geometry': []
                }
            })

        self.build_ui()

    def on_tool_edit(self):
        self.ui_disconnect()

        tool_dias = []
        for k, v in self.tools.items():
            for tool_v in v.keys():
                if tool_v == 'tooldia':
                    tool_dias.append(float('%.4f' % v[tool_v]))

        for row in range(self.tools_table.rowCount()):

            try:
                new_tool_dia = float(self.tools_table.item(row, 1).text())
            except ValueError:
                # try to convert comma to decimal point. if it's still not working error message and return
                try:
                    new_tool_dia = float(self.tools_table.item(row, 1).text().replace(',', '.'))
                except ValueError:
                    self.app.inform.emit("[ERROR_NOTCL]Wrong value format entered, "
                                         "use a number.")
                    return

            tooluid = int(self.tools_table.item(row, 2).text())

            # identify the tool that was edited and get it's tooluid
            if new_tool_dia not in tool_dias:
                self.tools[tooluid]['tooldia'] = new_tool_dia
                self.app.inform.emit("[success] Nozzle tool from Tool Table was edited.")
                self.build_ui()
                return
            else:
                # identify the old tool_dia and restore the text in tool table
                for k, v in self.tools.items():
                    if k == tooluid:
                        old_tool_dia = v['tooldia']
                        break
                restore_dia_item = self.tools_table.item(row, 1)
                restore_dia_item.setText(str(old_tool_dia))
                self.app.inform.emit("[WARNING_NOTCL] Edit cancelled. New diameter value is already in the Tool Table.")
        self.build_ui()

    def on_tool_delete(self, rows_to_delete=None, all=None):
        self.ui_disconnect()

        deleted_tools_list = []

        if all:
            self.tools.clear()
            self.build_ui()
            return

        if rows_to_delete:
            try:
                for row in rows_to_delete:
                    tooluid_del = int(self.tools_table.item(row, 2).text())
                    deleted_tools_list.append(tooluid_del)
            except TypeError:
                deleted_tools_list.append(rows_to_delete)

            for t in deleted_tools_list:
                self.tools.pop(t, None)
            self.build_ui()
            return

        try:
            if self.tools_table.selectedItems():
                for row_sel in self.tools_table.selectedItems():
                    row = row_sel.row()
                    if row < 0:
                        continue
                    tooluid_del = int(self.tools_table.item(row, 2).text())
                    deleted_tools_list.append(tooluid_del)

                for t in deleted_tools_list:
                    self.tools.pop(t, None)

        except AttributeError:
            self.app.inform.emit("[WARNING_NOTCL]Delete failed. Select a Nozzle tool to delete.")
            return
        except Exception as e:
            log.debug(str(e))

        self.app.inform.emit("[success] Nozzle tool(s) deleted from Tool Table.")
        self.build_ui()

    def on_geo_select(self):
        if self.geo_obj_combo.currentText().rpartition('_')[2] == 'solderpaste':
            self.gcode_frame.setDisabled(False)
        else:
            self.gcode_frame.setDisabled(True)

    @staticmethod
    def distance(pt1, pt2):
        return sqrt((pt1[0] - pt2[0]) ** 2 + (pt1[1] - pt2[1]) ** 2)

    def on_create_geo(self):
        proc = self.app.proc_container.new("Creating Solder Paste dispensing geometry.")

        name = self.obj_combo.currentText()
        obj = self.app.collection.get_by_name(name)

        if type(obj.solid_geometry) is not list:
            obj.solid_geometry = [obj.solid_geometry]

        # Sort tools in descending order
        sorted_tools = []
        for k, v in self.tools.items():
            sorted_tools.append(float('%.4f' % float(v['tooldia'])))
        sorted_tools.sort(reverse=True)

        def geo_init(geo_obj, app_obj):
            geo_obj.solid_geometry = []
            geo_obj.tools = {}
            geo_obj.multigeo = True
            geo_obj.multitool = True
            geo_obj.tools = {}

            def solder_line(p, offset):

                xmin, ymin, xmax, ymax = p.bounds

                min = [xmin, ymin]
                max = [xmax, ymax]
                min_r = [xmin, ymax]
                max_r = [xmax, ymin]

                diagonal_1 = LineString([min, max])
                diagonal_2 = LineString([min_r, max_r])
                round_diag_1 = round(diagonal_1.intersection(p).length, 4)
                round_diag_2 = round(diagonal_2.intersection(p).length, 4)

                if round_diag_1 == round_diag_2:
                    l = distance((xmin, ymin), (xmax, ymin))
                    h = distance((xmin, ymin), (xmin, ymax))
                    if offset >= l /2 or offset >= h / 2:
                        return "fail"
                    if l > h:
                        h_half = h / 2
                        start = [xmin, (ymin + h_half)]
                        stop = [(xmin + l), (ymin + h_half)]
                    else:
                        l_half = l / 2
                        start = [(xmin + l_half), ymin]
                        stop = [(xmin + l_half), (ymin + h)]
                    geo = LineString([start, stop])
                elif round_diag_1 > round_diag_2:
                    geo = diagonal_1.intersection(p)
                else:
                    geo = diagonal_2.intersection(p)

                offseted_poly = p.buffer(-offset)
                geo = geo.intersection(offseted_poly)
                return geo

            work_geo = obj.solid_geometry
            rest_geo = []
            tooluid = 1

            for tool in sorted_tools:
                offset = tool / 2

                for uid, v in self.tools.items():
                    if float('%.4f' % float(v['tooldia'])) == tool:
                        tooluid = int(uid)
                        break

                for g in work_geo:
                    if type(g) == MultiPolygon:
                        for poly in g:
                            geom = solder_line(poly, offset=offset)
                            if geom != 'fail':
                                try:
                                    geo_obj.tools[tooluid]['solid_geometry'].append(geom)
                                except KeyError:
                                    geo_obj.tools[tooluid] = {}
                                    geo_obj.tools[tooluid]['solid_geometry'] = []
                                    geo_obj.tools[tooluid]['solid_geometry'].append(geom)
                                geo_obj.tools[tooluid]['tooldia'] = tool
                                geo_obj.tools[tooluid]['offset'] = 'Path'
                                geo_obj.tools[tooluid]['offset_value'] = 0.0
                                geo_obj.tools[tooluid]['type'] = ' '
                                geo_obj.tools[tooluid]['tool_type'] = ' '
                                geo_obj.tools[tooluid]['data'] = {}
                            else:
                                rest_geo.append(poly)
                    elif type(g) == Polygon:
                        geom = solder_line(g, offset=offset)
                        if geom != 'fail':
                            try:
                                geo_obj.tools[tooluid]['solid_geometry'].append(geom)
                            except KeyError:
                                geo_obj.tools[tooluid] = {}
                                geo_obj.tools[tooluid]['solid_geometry'] = []
                                geo_obj.tools[tooluid]['solid_geometry'].append(geom)
                            geo_obj.tools[tooluid]['tooldia'] = tool
                            geo_obj.tools[tooluid]['offset'] = 'Path'
                            geo_obj.tools[tooluid]['offset_value'] = 0.0
                            geo_obj.tools[tooluid]['type'] = ' '
                            geo_obj.tools[tooluid]['tool_type'] = ' '
                            geo_obj.tools[tooluid]['data'] = {}
                        else:
                            rest_geo.append(g)

                work_geo = rest_geo
                if not work_geo:
                    app_obj.inform.emit("[success] Solder Paste geometry generated successfully...")
                    return

            # if we still have geometry not processed at the end of the tools then we failed
            # some or all the pads are not covered with solder paste
            if rest_geo:
                app_obj.inform.emit("[WARNING_NOTCL] Some or all pads have no solder "
                                    "due of inadequate nozzle diameters...")
                return 'fail'

        def job_thread(app_obj):
            try:
                app_obj.new_object("geometry", name + "_solderpaste", geo_init)
            except Exception as e:
                proc.done()
                traceback.print_stack()
                return
            proc.done()

        self.app.inform.emit("Generating Solder Paste dispensing geometry...")
        # Promise object with the new name
        self.app.collection.promise(name)

        # Background
        self.app.worker_task.emit({'fcn': job_thread, 'params': [self.app]})
        # self.app.ui.notebook.setCurrentWidget(self.app.ui.project_tab)

    def on_create_gcode(self):
        name = self.obj_combo.currentText()

        def geo_init(geo_obj, app_obj):
           pass

        # self.app.new_object("geometry", name + "_cutout", geo_init)
        # self.app.inform.emit("[success] Rectangular CutOut operation finished.")
        # self.app.ui.notebook.setCurrentWidget(self.app.ui.project_tab)

    def reset_fields(self):
        self.obj_combo.setRootModelIndex(self.app.collection.index(0, 0, QtCore.QModelIndex()))