#!/usr/bin/python # import sys import traceback import os from threading import Thread import socket import errno import time import logging import wx import inkex import inkstitch from inkstitch import _, PIXELS_PER_MM, SVG_GROUP_TAG from inkstitch.extensions import InkstitchExtension from inkstitch.stitch_plan import patches_to_stitch_plan from inkstitch.svg import render_stitch_plan from inkstitch.utils import save_stderr, restore_stderr from jinja2 import Environment, FileSystemLoader, select_autoescape from datetime import date import base64 from flask import Flask, request, Response, send_from_directory import webbrowser import requests def datetimeformat(value, format='%Y/%m/%d'): return value.strftime(format) def open_url(url): # Avoid spurious output from xdg-open. Any output on stdout will crash # inkscape. null = open(os.devnull, 'w') old_stdout = os.dup(sys.stdout.fileno()) os.dup2(null.fileno(), sys.stdout.fileno()) if getattr(sys, 'frozen', False): # PyInstaller sets LD_LIBRARY_PATH. We need to temporarily clear it # to avoid confusing xdg-open, which webbrowser will run. # The following code is adapted from PyInstaller's documentation # http://pyinstaller.readthedocs.io/en/stable/runtime-information.html old_environ = dict(os.environ) # make a copy of the environment lp_key = 'LD_LIBRARY_PATH' # for Linux and *BSD. lp_orig = os.environ.get(lp_key + '_ORIG') # pyinstaller >= 20160820 has this if lp_orig is not None: os.environ[lp_key] = lp_orig # restore the original, unmodified value else: os.environ.pop(lp_key, None) # last resort: remove the env var webbrowser.open(url) # restore the old environ os.environ.clear() os.environ.update(old_environ) else: webbrowser.open(url) # restore file descriptors os.dup2(old_stdout, sys.stdout.fileno()) os.close(old_stdout) class PrintPreviewServer(Thread): def __init__(self, *args, **kwargs): self.html = kwargs.pop('html') Thread.__init__(self, *args, **kwargs) self.daemon = True self.last_request_time = None self.shutting_down = False self.__setup_app() def __set_resources_path(self): if getattr(sys, 'frozen', False): self.resources_path = os.path.join(sys._MEIPASS, 'print', 'resources') else: self.resources_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'print', 'resources') def __setup_app(self): self.__set_resources_path() self.app = Flask(__name__) @self.app.before_request def request_started(): self.last_request_time = time.time() @self.app.before_first_request def start_watcher(): self.watcher_thread = Thread(target=self.watch) self.watcher_thread.daemon = True self.watcher_thread.start() @self.app.route('/') def index(): return self.html @self.app.route('/shutdown', methods=['POST']) def shutdown(): self.shutting_down = True request.environ.get('werkzeug.server.shutdown')() return 'Server shutting down...' @self.app.route('/resources/', methods=['GET']) def resources(resource): return send_from_directory(self.resources_path, resource, cache_timeout=1) @self.app.route('/ping') def ping(): # Javascript is letting us know it's still there. This resets self.last_request_time. return "pong" @self.app.route('/printing/start') def printing_start(): # temporarily turn off the watcher while the print dialog is up, # because javascript will be frozen self.last_request_time = None return "OK" @self.app.route('/printing/end') def printing_end(): # nothing to do here -- request_started() will restart the watcher return "OK" def stop(self): # for whatever reason, shutting down only seems possible in # the context of a flask request, so we'll just make one requests.post("http://%s:%s/shutdown" % (self.host, self.port)) def watch(self): try: while True: time.sleep(1) if self.shutting_down: break if self.last_request_time is not None and \ (time.time() - self.last_request_time) > 3: self.stop() break except: # seems like sometimes this thread blows up during shutdown pass def disable_logging(self): logging.getLogger('werkzeug').setLevel(logging.ERROR) def run(self): self.disable_logging() self.host = "127.0.0.1" self.port = 5000 while True: try: self.app.run(self.host, self.port, threaded=True) except socket.error, e: if e.errno == errno.EADDRINUSE: self.port += 1 continue else: raise else: break class PrintInfoFrame(wx.Frame): def __init__(self, *args, **kwargs): self.print_server = kwargs.pop("print_server") wx.Frame.__init__(self, *args, **kwargs) panel = wx.Panel(self) sizer = wx.BoxSizer(wx.VERTICAL) text = wx.StaticText(panel, label=_("A print preview has been opened in your web browser. This window will stay open in order to communicate with the JavaScript code running in your browser.\n\nThis window will close after you close the print preview in your browser, or you can close it manually if necessary.")) font = wx.Font(14, wx.DEFAULT, wx.NORMAL, wx.NORMAL) text.SetFont(font) sizer.Add(text, proportion=1, flag=wx.ALL|wx.EXPAND, border=20) stop_button = wx.Button(panel, id=wx.ID_CLOSE) stop_button.Bind(wx.EVT_BUTTON, self.close_button_clicked) sizer.Add(stop_button, proportion=0, flag=wx.ALIGN_CENTER|wx.ALL, border=10) panel.SetSizer(sizer) panel.Layout() self.timer = wx.PyTimer(self.__watcher) self.timer.Start(250) def close_button_clicked(self, event): self.print_server.stop() def __watcher(self): if not self.print_server.is_alive(): self.timer.Stop() self.timer = None self.Destroy() class Print(InkstitchExtension): def build_environment(self): if getattr( sys, 'frozen', False ) : template_dir = os.path.join(sys._MEIPASS, "print", "templates") else: template_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "print", "templates") env = Environment( loader = FileSystemLoader(template_dir), autoescape=select_autoescape(['html', 'xml']), extensions=['jinja2.ext.i18n'] ) env.filters['datetimeformat'] = datetimeformat env.install_gettext_translations(inkstitch.translation) return env def strip_namespaces(self): # namespace prefixes seem to trip up HTML, so get rid of them for element in self.document.iter(): if element.tag[0]=='{': element.tag = element.tag[element.tag.index('}',1) + 1:] def effect(self): # It doesn't really make sense to print just a couple of selected # objects. It's almost certain they meant to print the whole design. # If they really wanted to print just a few objects, they could set # the rest invisible temporarily. self.selected = {} if not self.get_elements(): return self.hide_all_layers() patches = self.elements_to_patches(self.elements) stitch_plan = patches_to_stitch_plan(patches) render_stitch_plan(self.document.getroot(), stitch_plan) self.strip_namespaces() # Now the stitch plan layer will contain a set of groups, each # corresponding to a color block. We'll create a set of SVG files # corresponding to each individual color block and a final one # for all color blocks together. svg = self.document.getroot() layers = svg.findall("./g[@{http://www.inkscape.org/namespaces/inkscape}groupmode='layer']") stitch_plan_layer = svg.find(".//*[@id='__inkstitch_stitch_plan__']") # First, delete all of the other layers. We don't need them and they'll # just bulk up the SVG. for layer in layers: if layer is not stitch_plan_layer: svg.remove(layer) overview_svg = inkex.etree.tostring(self.document) color_block_groups = stitch_plan_layer.getchildren() for i, group in enumerate(color_block_groups): # clear the stitch plan layer del stitch_plan_layer[:] # add in just this group stitch_plan_layer.append(group) # save an SVG preview stitch_plan.color_blocks[i].svg_preview = inkex.etree.tostring(self.document) env = self.build_environment() template = env.get_template('index.html') html = template.render( view = {'client_overview': False, 'client_detailedview': False, 'operator_overview': True, 'operator_detailedview': True}, logo = {'src' : '', 'title' : 'LOGO'}, date = date.today(), client = "", job = { 'title': '', 'num_colors': stitch_plan.num_colors, 'num_color_blocks': len(stitch_plan), 'num_stops': stitch_plan.num_stops, 'num_trims': stitch_plan.num_trims, 'dimensions': stitch_plan.dimensions_mm, 'num_stitches': stitch_plan.num_stitches, 'estimated_time': '', # TODO 'estimated_thread': '', # TODO }, svg_overview = overview_svg, svg_scale = '100%', color_blocks = stitch_plan.color_blocks, ) print_server = PrintPreviewServer(html=html) print_server.start() time.sleep(1) open_url("http://%s:%s/" % (print_server.host, print_server.port)) app = wx.App() info_frame = PrintInfoFrame(None, title=_("Ink/Stitch Print"), size=(450, 350), print_server=print_server) info_frame.Show() app.MainLoop() # don't let inkex print the document out sys.exit(0) if __name__ == '__main__': save_stderr() effect = Print() effect.affect() restore_stderr()