def testProgress(self): f = QgsFeedback() self.assertEqual(f.progress(), 0.0) progress_spy = QSignalSpy(f.progressChanged) f.setProgress(25) self.assertEqual(f.progress(), 25.0) self.assertEqual(len(progress_spy), 1) self.assertEqual(progress_spy[0][0], 25.0)
def open_style(input_file): # pylint: disable=too-many-locals,too-many-branches,too-many-statements """ Opens a .style file """ if not Extractor.is_mdb_tools_binary_available(): bar = iface.messageBar() widget = bar.createMessage('SLYR', "MDB Tools utility not found") settings_button = QPushButton("Configure…", pressed=partial(open_settings, widget)) widget.layout().addWidget(settings_button) bar.pushWidget(widget, Qgis.Critical) return True style = QgsStyle() style.createMemoryDatabase() symbol_names = set() def make_name_unique(name): """ Ensures that the symbol name is unique (in a case insensitive way) """ counter = 0 candidate = name while candidate.lower() in symbol_names: # make name unique if counter == 0: candidate += '_1' else: candidate = candidate[:candidate.rfind('_') + 1] + str(counter) counter += 1 symbol_names.add(candidate.lower()) return candidate feedback = QgsFeedback() progress_dialog = QProgressDialog("Loading style database…", "Abort", 0, 100, None) progress_dialog.setWindowTitle("Loading Style") def progress_changed(progress): """ Handles feedback to progress dialog bridge """ progress_dialog.setValue(progress) iters = 0 while QCoreApplication.hasPendingEvents() and iters < 100: QCoreApplication.processEvents() iters += 1 feedback.progressChanged.connect(progress_changed) def cancel(): """ Slot to cancel the import """ feedback.cancel() progress_dialog.canceled.connect(cancel) unreadable = [] warnings = set() errors = set() types_to_extract = [Extractor.FILL_SYMBOLS, Extractor.LINE_SYMBOLS, Extractor.MARKER_SYMBOLS, Extractor.COLOR_RAMPS, Extractor.TEXT_SYMBOLS, Extractor.LABELS, Extractor.MAPLEX_LABELS, Extractor.AREA_PATCHES, Extractor.LINE_PATCHES] type_percent = 100 / len(types_to_extract) for type_index, symbol_type in enumerate(types_to_extract): try: raw_symbols = Extractor.extract_styles(input_file, symbol_type) except MissingBinaryException: show_warning('MDB Tools utility not found', 'Convert style', 'The MDB tools "mdb-export" utility is required to convert .style databases. Please setup a path to the MDB tools utility in the SLYR options panel.', level=Qgis.Critical) progress_dialog.deleteLater() return True if feedback.isCanceled(): break for index, raw_symbol in enumerate(raw_symbols): feedback.setProgress(index / len(raw_symbols) * type_percent + type_percent * type_index) if feedback.isCanceled(): break name = raw_symbol[Extractor.NAME] tags = raw_symbol[Extractor.TAGS].split(';') if symbol_type in ( Extractor.AREA_PATCHES, Extractor.LINE_PATCHES, Extractor.TEXT_SYMBOLS, Extractor.MAPLEX_LABELS, Extractor.LABELS): if symbol_type == Extractor.AREA_PATCHES: type_string = 'area patches' elif symbol_type == Extractor.LINE_PATCHES: type_string = 'line patches' elif symbol_type == Extractor.TEXT_SYMBOLS: type_string = 'text symbols' elif symbol_type == Extractor.MAPLEX_LABELS: type_string = 'maplex labels' elif symbol_type == Extractor.LABELS: type_string = 'labels' else: type_string = '' unreadable.append('<b>{}</b>: {} conversion requires a licensed version of the SLYR plugin'.format( html.escape(name), type_string)) continue unique_name = make_name_unique(name) handle = BytesIO(raw_symbol[Extractor.BLOB]) stream = Stream(handle) stream.allow_shortcuts = False try: symbol = stream.read_object() except UnreadableSymbolException as e: e = 'Unreadable object: {}'.format(e) unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue except NotImplementedException as e: unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue except UnsupportedVersionException as e: e = 'Unsupported version: {}'.format(e) unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue except UnknownClsidException as e: unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue except UnreadablePictureException as e: unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue context = Context() context.symbol_name = unique_name def unsupported_object_callback(msg, level=Context.WARNING): if level == Context.WARNING: warnings.add('<b>{}</b>: {}'.format(html.escape(unique_name), html.escape(msg))) elif level == Context.CRITICAL: errors.add('<b>{}</b>: {}'.format(html.escape(unique_name), html.escape(msg))) context.unsupported_object_callback = unsupported_object_callback # context.style_folder, _ = os.path.split(output_file) try: qgis_symbol = SymbolConverter.Symbol_to_QgsSymbol(symbol, context) except NotImplementedException as e: unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue except UnreadablePictureException as e: unreadable.append('<b>{}</b>: {}'.format(html.escape(name), html.escape(str(e)))) continue if isinstance(qgis_symbol, QgsSymbol): # self.check_for_missing_fonts(qgis_symbol, feedback) style.addSymbol(unique_name, qgis_symbol, True) elif isinstance(qgis_symbol, QgsColorRamp): style.addColorRamp(unique_name, qgis_symbol, True) if tags: if isinstance(qgis_symbol, QgsSymbol): assert style.tagSymbol(QgsStyle.SymbolEntity, unique_name, tags) elif isinstance(qgis_symbol, QgsColorRamp): assert style.tagSymbol(QgsStyle.ColorrampEntity, unique_name, tags) progress_dialog.deleteLater() if feedback.isCanceled(): return True if errors or unreadable or warnings: message = '' if unreadable: message = '<p>The following symbols could not be converted:</p>' message += '<ul>' for w in unreadable: message += '<li>{}</li>'.format(w.replace('\n', '<br>')) message += '</ul>' if errors: message += '<p>The following errors were generated while converting symbols:</p>' message += '<ul>' for w in errors: message += '<li>{}</li>'.format(w.replace('\n', '<br>')) message += '</ul>' if warnings: message += '<p>The following warnings were generated while converting symbols:</p>' message += '<ul>' for w in warnings: message += '<li>{}</li>'.format(w.replace('\n', '<br>')) message += '</ul>' show_warning('style could not be completely converted', 'Convert style', message, level=Qgis.Critical if (unreadable or errors) else Qgis.Warning) if Qgis.QGIS_VERSION_INT >= 30800: dlg = QgsStyleManagerDialog(style, readOnly=True) dlg.setFavoritesGroupVisible(False) dlg.setSmartGroupsVisible(False) fi = QFileInfo(input_file) dlg.setBaseStyleName(fi.baseName()) else: dlg = QgsStyleManagerDialog(style) dlg.exec_() return True