FlatCAM/flatcamTools/ToolInvertGerber.py

# ##########################################################
# FlatCAM: 2D Post-processing for Manufacturing            #
# File Author: Marius Adrian Stanciu (c)                   #
# Date: 2/14/2020                                          #
# MIT Licence                                              #
# ##########################################################

from PyQt5 import QtWidgets, QtCore

from FlatCAMTool import FlatCAMTool
from flatcamGUI.GUIElements import FCButton, FCDoubleSpinner

from shapely.geometry import Polygon, MultiPolygon, MultiLineString, LineString, box
from shapely.ops import cascaded_union

import traceback
from copy import deepcopy
import time
import logging
import gettext
import FlatCAMTranslation as fcTranslate
import builtins

fcTranslate.apply_language('strings')
if '_' not in builtins.__dict__:
    _ = gettext.gettext

log = logging.getLogger('base')


class ToolInvertGerber(FlatCAMTool):

    toolName = _("Invert Tool")

    def __init__(self, app):
        self.app = app
        self.decimals = self.app.decimals

        FlatCAMTool.__init__(self, app)

        self.tools_frame = QtWidgets.QFrame()
        self.tools_frame.setContentsMargins(0, 0, 0, 0)
        self.layout.addWidget(self.tools_frame)
        self.tools_box = QtWidgets.QVBoxLayout()
        self.tools_box.setContentsMargins(0, 0, 0, 0)
        self.tools_frame.setLayout(self.tools_box)

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

        # Form Layout
        grid0 = QtWidgets.QGridLayout()
        grid0.setColumnStretch(0, 0)
        grid0.setColumnStretch(1, 1)
        self.tools_box.addLayout(grid0)

        grid0.addWidget(QtWidgets.QLabel(''), 0, 0, 1, 2)

        # Target Gerber Object
        self.gerber_combo = QtWidgets.QComboBox()
        self.gerber_combo.setModel(self.app.collection)
        self.gerber_combo.setRootModelIndex(self.app.collection.index(0, 0, QtCore.QModelIndex()))
        self.gerber_combo.setCurrentIndex(1)

        self.gerber_label = QtWidgets.QLabel('%s:' % _("Gerber Object"))
        self.gerber_label.setToolTip(
            _("Gerber object that will be inverted.")
        )

        grid0.addWidget(self.gerber_label, 1, 0, 1, 2)
        grid0.addWidget(self.gerber_combo, 2, 0, 1, 2)

        # Margin
        self.margin_label = QtWidgets.QLabel('%s:' % _('Margin'))
        self.margin_label.setToolTip(
            _("Distance by which to avoid\n"
              "the edges of the Gerber object.")
        )
        self.margin_entry = FCDoubleSpinner()
        self.margin_entry.set_precision(self.decimals)
        self.margin_entry.set_range(0.0000, 9999.9999)
        self.margin_entry.setObjectName(_("Margin"))

        grid0.addWidget(self.margin_label, 3, 0)
        grid0.addWidget(self.margin_entry, 3, 1)

        separator_line = QtWidgets.QFrame()
        separator_line.setFrameShape(QtWidgets.QFrame.HLine)
        separator_line.setFrameShadow(QtWidgets.QFrame.Sunken)
        grid0.addWidget(separator_line, 4, 0, 1, 2)

        self.invert_btn = FCButton(_('Invert Gerber'))
        self.invert_btn.setToolTip(
            _("Will invert the Gerber object: areas that have copper\n"
              "will be emty of copper and previous empty area will be\n"
              "filled with copper.")
        )
        self.invert_btn.setStyleSheet("""
                        QPushButton
                        {
                            font-weight: bold;
                        }
                        """)
        grid0.addWidget(self.invert_btn, 5, 0, 1, 2)

        self.tools_box.addStretch()

        # ## Reset Tool
        self.reset_button = QtWidgets.QPushButton(_("Reset Tool"))
        self.reset_button.setToolTip(
            _("Will reset the tool parameters.")
        )
        self.reset_button.setStyleSheet("""
                        QPushButton
                        {
                            font-weight: bold;
                        }
                        """)
        self.tools_box.addWidget(self.reset_button)

        self.invert_btn.clicked.connect(self.on_grb_invert)
        self.reset_button.clicked.connect(self.set_tool_ui)

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

    def run(self, toggle=True):
        self.app.report_usage("ToolInvertGerber()")
        log.debug("ToolInvertGerber() is running ...")

        if toggle:
            # if the splitter is hidden, display it, else hide it but only if the current widget is the same
            if self.app.ui.splitter.sizes()[0] == 0:
                self.app.ui.splitter.setSizes([1, 1])
            else:
                try:
                    if self.app.ui.tool_scroll_area.widget().objectName() == self.toolName:
                        # if tab is populated with the tool but it does not have the focus, focus on it
                        if not self.app.ui.notebook.currentWidget() is self.app.ui.tool_tab:
                            # focus on Tool Tab
                            self.app.ui.notebook.setCurrentWidget(self.app.ui.tool_tab)
                        else:
                            self.app.ui.splitter.setSizes([0, 1])
                except AttributeError:
                    pass
        else:
            if self.app.ui.splitter.sizes()[0] == 0:
                self.app.ui.splitter.setSizes([1, 1])

        FlatCAMTool.run(self)
        self.set_tool_ui()

        self.app.ui.notebook.setTabText(2, _("Invert Tool"))

    def set_tool_ui(self):
        self.margin_entry.set_value(0.0)

    def on_grb_invert(self):
        margin = self.margin_entry.get_value()
        if round(margin, self.decimals) == 0.0:
            margin = 1E-10

        grb_circle_steps = int(self.app.defaults["gerber_circle_steps"])
        obj_name = self.gerber_combo.currentText()

        outname = obj_name + "_inverted"

        # Get source object.
        try:
            grb_obj = self.app.collection.get_by_name(obj_name)
        except Exception as e:
            self.app.inform.emit('[ERROR_NOTCL] %s: %s' % (_("Could not retrieve object"), str(obj_name)))
            return "Could not retrieve object: %s with error: %s" % (obj_name, str(e))

        if grb_obj is None:
            self.app.inform.emit('[ERROR_NOTCL] %s: %s' % (_("Object not found"), str(obj_name)))
            return

        xmin, ymin, xmax, ymax = grb_obj.bounds()

        grb_box = box(xmin, ymin, xmax, ymax).buffer(margin, resolution=grb_circle_steps, join_style=2)

        try:
            __ = iter(grb_obj.solid_geometry)
        except TypeError:
            grb_obj.solid_geometry = list(grb_obj.solid_geometry)

        new_solid_geometry = deepcopy(grb_box)

        for poly in grb_obj.solid_geometry:
            new_solid_geometry = new_solid_geometry.difference(poly)

        new_options = dict()
        for opt in grb_obj.options:
            new_options[opt] = deepcopy(grb_obj.options[opt])

        new_apertures = dict()

        # for apid, val in grb_obj.apertures.items():
        #     new_apertures[apid] = dict()
        #     for key in val:
        #         if key == 'geometry':
        #             new_apertures[apid]['geometry'] = list()
        #             for elem in val['geometry']:
        #                 geo_elem = dict()
        #                 if 'follow' in elem:
        #                     try:
        #                         geo_elem['clear'] = elem['follow'].buffer(val['size'] / 2.0).exterior
        #                     except AttributeError:
        #                         # TODO should test if width or height is bigger
        #                         geo_elem['clear'] = elem['follow'].buffer(val['width'] / 2.0).exterior
        #                 if 'clear' in elem:
        #                     if isinstance(elem['clear'], Polygon):
        #                         try:
        #                             geo_elem['solid'] = elem['clear'].buffer(val['size'] / 2.0, grb_circle_steps)
        #                         except AttributeError:
        #                             # TODO should test if width or height is bigger
        #                             geo_elem['solid'] = elem['clear'].buffer(val['width'] / 2.0, grb_circle_steps)
        #                     else:
        #                         geo_elem['follow'] = elem['clear']
        #                 new_apertures[apid]['geometry'].append(deepcopy(geo_elem))
        #         else:
        #             new_apertures[apid][key] = deepcopy(val[key])

        if '0' not in new_apertures:
            new_apertures['0'] = dict()
            new_apertures['0']['type'] = 'C'
            new_apertures['0']['size'] = 0.0
            new_apertures['0']['geometry'] = list()

        try:
            for poly in new_solid_geometry:
                new_el = dict()
                new_el['solid'] = poly
                new_el['follow'] = poly.exterior
                new_apertures['0']['geometry'].append(new_el)
        except TypeError:
            new_el = dict()
            new_el['solid'] = new_solid_geometry
            new_el['follow'] = new_solid_geometry.exterior
            new_apertures['0']['geometry'].append(new_el)

        for td in new_apertures:
            print(td, new_apertures[td])

        def init_func(new_obj, app_obj):
            new_obj.options.update(new_options)
            new_obj.options['name'] = outname
            new_obj.fill_color = deepcopy(grb_obj.fill_color)
            new_obj.outline_color = deepcopy(grb_obj.outline_color)

            new_obj.apertures = deepcopy(new_apertures)

            new_obj.solid_geometry = deepcopy(new_solid_geometry)
            new_obj.source_file = self.app.export_gerber(obj_name=outname, filename=None,
                                                         local_use=new_obj, use_thread=False)

        self.app.new_object('gerber', outname, init_func)

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

    @staticmethod
    def poly2rings(poly):
        return [poly.exterior] + [interior for interior in poly.interiors]
# end of file