def outPrint(
self, iface, wdg, mdl,
library): # Postscript file rendering doesn't work properly yet.
for i in range(0, mdl.rowCount()):
if mdl.item(i, 0).data(Qt.CheckStateRole):
name = str(mdl.item(i, 2).data(Qt.EditRole))
#return
fileName, __, __ = QFileDialog.getSaveFileName(
iface.mainWindow(), "Save As", "Profile of " + name + ".ps",
"PostScript Format (*.ps)")
if fileName:
if library == "Qwt5" and has_qwt:
printer = QPrinter()
printer.setCreator("QGIS Profile Plugin")
printer.setDocName("QGIS Profile")
printer.setOutputFileName(fileName)
printer.setColorMode(QPrinter.Color)
printer.setOrientation(QPrinter.Portrait)
dialog = QPrintDialog(printer)
if dialog.exec_():
wdg.plotWdg.print_(printer)
elif library == "Matplotlib" and has_mpl:
wdg.plotWdg.figure.savefig(str(fileName))
class WeightDataDialog(QDialog, FORM_CLASS):
"""
Modal dialog allowing to select weights in a d3.js visualization
"""
# QVariantMap is to map a JSON to dict see:
# http://pyqt.sourceforge.net/Docs/PyQt4/incompatibilities.html#pyqt4-v4-7-4
# this is for javascript to emit when it changes the json
json_updated = pyqtSignal(['QVariantMap'], name='json_updated')
# Python classes should connect to json_cleaned
json_cleaned = pyqtSignal(['QVariantMap'], name='json_cleaned')
def __init__(self, iface, project_definition):
self.iface = iface
QDialog.__init__(self)
# Set up the user interface from Designer.
self.setupUi(self)
self.ok_button = self.buttonBox.button(QDialogButtonBox.Ok)
self.added_attrs_ids = set()
self.discarded_feats = set()
self.any_changes_made = False
# keep track of changes made to the tree while on-the-fly calculations
# are off (the tree has changed, but indices haven't been recalculated)
self.modified_project_definition = None
self.active_layer_numeric_fields = []
self.active_layer_numeric_fields_aliases = []
self.update_active_layer_numeric_fields()
# keep track of the fact that the user has explicitly selected a field
# to base the style on. Note that also the selection of the empty item
# means that the user explicitly wants the system to use the default
# behavior.
self.style_by_field_selected = False
self.project_definition = deepcopy(project_definition)
try:
proj_title = self.project_definition['title']
except KeyError:
proj_title = 'Untitled'
dialog_title = ('Set weights and operators for project: "%s"' %
proj_title)
self.setWindowTitle(dialog_title)
self.web_view = self.web_view
self.web_view.page().mainFrame().setScrollBarPolicy(
Qt.Vertical, Qt.ScrollBarAlwaysOff)
self.web_view.page().mainFrame().setScrollBarPolicy(
Qt.Horizontal, Qt.ScrollBarAlwaysOff)
self.web_view.load(QUrl('qrc:/plugins/irmt/weight_data.html'))
self.printer = QPrinter(QPrinter.HighResolution)
self.printer.setPageSize(QPrinter.A4)
self.printer.setOutputFormat(QPrinter.PdfFormat)
self.printer.setPrintRange(QPrinter.AllPages)
self.printer.setOrientation(QPrinter.Portrait)
self.printer.setDocName(proj_title)
self.printer.setCreator(
'GEM Integrated Risk Modelling Toolkit QGIS Plugin')
self.frame = self.web_view.page().mainFrame()
self.frame.javaScriptWindowObjectCleared.connect(self.setup_js)
self.web_view.loadFinished.connect(self.show_tree)
self.json_updated.connect(self.handle_json_updated)
self.populate_style_by_field_cbx()
if not DEBUG:
self.web_view.setContextMenuPolicy(Qt.NoContextMenu)
self.web_view.settings().setAttribute(QWebSettings.JavascriptEnabled,
True)
def closeEvent(self, event):
confirmation_on_close(self, event)
def reject(self):
confirmation_on_close(self)
def update_project_definition(self, project_definition):
self.project_definition = deepcopy(project_definition)
self.populate_style_by_field_cbx()
def update_active_layer_numeric_fields(self):
self.active_layer_numeric_fields = [
field.name() for field in self.iface.activeLayer().fields()
if field.typeName() in NUMERIC_FIELD_TYPES
]
self.active_layer_numeric_fields_aliases = [
self.iface.activeLayer().attributeAlias(field_idx) for field_idx,
field in enumerate(self.iface.activeLayer().fields())
if field.typeName() in NUMERIC_FIELD_TYPES
]
def populate_style_by_field_cbx(self):
self.update_active_layer_numeric_fields()
fields_in_proj_def = get_field_names(self.project_definition)
fields_for_styling = [
field for field in self.active_layer_numeric_fields
if field in fields_in_proj_def
]
# block signals to avoid performing the onchange actions while adding
# items programmatically
self.style_by_field_cbx.blockSignals(True)
self.style_by_field_cbx.clear()
self.style_by_field_cbx.addItem('')
self.style_by_field_cbx.addItems(fields_for_styling)
if 'style_by_field' in self.project_definition:
idx = self.style_by_field_cbx.findText(
self.project_definition['style_by_field'])
self.style_by_field_cbx.setCurrentIndex(idx)
# reactivate the signals, so the user's changes will trigger something
self.style_by_field_cbx.blockSignals(False)
def setup_js(self):
# pass a reference (called qt_page) of self to the JS world
# to expose a member of self to js you need to declare it as property
# see for example self.json_str()
if DEBUG:
log_msg("######################### for weight_data_debug.html")
self.print_self_for_debug()
log_msg("######################### end for weight_data_debug.html")
self.frame.addToJavaScriptWindowObject('qt_page', self)
def show_tree(self):
# start the tree
self.frame.evaluateJavaScript('init_tree()')
def handle_json_updated(self, data):
self.any_changes_made = True
if DEBUG:
import pprint
ppdata = pprint.pformat(data, indent=4)
log_msg('in handle_json_updated, data=\n%s' % ppdata)
if self.on_the_fly_ckb.isChecked():
self.project_definition = self.clean_json([data])
self._manage_style_by_field()
self.json_cleaned.emit(self.project_definition)
# nothing has changed since the last recalculation
self.modified_project_definition = None
else:
# keep track of the current status of the project definition
# as it is in the d3 tree, so it can be used when OK is pressed
self.modified_project_definition = self.clean_json([data])
def _manage_style_by_field(self):
if self.style_by_field_selected:
if self.style_by_field_cbx.currentText():
self.project_definition['style_by_field'] = \
self.style_by_field_cbx.currentText()
elif 'style_by_field' in self.project_definition:
# if the empty item is selected, clean the project definition
del self.project_definition['style_by_field']
def clean_json(self, data):
# this method takes a list of dictionaries and removes some unneeded
# keys. It recurses into the children elements
if data == []:
return data
ignore_keys = ['depth', 'x', 'y', 'id', 'x0', 'y0', 'parent']
for element in data:
for key in ignore_keys:
element.pop(key, None)
if 'children' in element:
self.clean_json(element['children'])
# return the main element
return data[0]
@pyqtSlot()
def on_print_btn_clicked(self):
dest_full_path_name = ask_for_destination_full_path_name(
self, filter='Pdf files (*.pdf)')
if not dest_full_path_name:
return
self.printer.setOutputFileName(dest_full_path_name)
try:
self.web_view.print_(self.printer)
except Exception as exc:
msg = 'It was impossible to create the pdf'
log_msg(msg,
level='C',
message_bar=self.iface.messageBar(),
exception=exc)
else:
msg = ('Project definition printed as pdf and saved to: %s' %
dest_full_path_name)
log_msg(msg, level='S', message_bar=self.iface.messageBar())
@pyqtSlot(str)
def on_style_by_field_cbx_currentIndexChanged(self):
self.style_by_field_selected = True
self._manage_style_by_field()
self.json_updated.emit(self.project_definition)
@pyqtProperty(str)
def json_str(self):
# This method gets exposed to JS thanks to @pyqtProperty(str)
return json.dumps(self.project_definition,
sort_keys=False,
indent=2,
separators=(',', ': '))
@pyqtProperty(str)
def DEFAULT_OPERATOR(self):
return DEFAULT_OPERATOR
@pyqtProperty(bool)
def DEV_MODE(self):
developer_mode = QSettings().value('/irmt/developer_mode',
True,
type=bool)
return developer_mode
@pyqtProperty(str)
def OPERATORS(self):
return ';'.join(list(OPERATORS_DICT.values()))
@pyqtProperty(str)
def ACTIVE_LAYER_NUMERIC_FIELDS(self):
return ';'.join(self.active_layer_numeric_fields)
@pyqtProperty(str)
def ACTIVE_LAYER_NUMERIC_FIELDS_ALIASES(self):
return ';'.join(self.active_layer_numeric_fields_aliases)
@pyqtProperty(str)
def NODE_TYPES(self):
return ';'.join(["%s:%s" % (k, v) for k, v in NODE_TYPES.items()])
def print_self_for_debug(self):
msg = """
var qt_page = {
ACTIVE_LAYER_NUMERIC_FIELDS: "%s",
ACTIVE_LAYER_NUMERIC_FIELDS_ALIASES: "%s",
DEFAULT_OPERATOR: "%s",
NODE_TYPES: "%s",
OPERATORS: "%s",
json_str: '%s',
json_updated: function (updated_json_str) {
console.log("json_updated signal emitted with this JSON:");
console.log(updated_json_str)
},
DEV_MODE: %s
};""" % (self.ACTIVE_LAYER_NUMERIC_FIELDS,
self.ACTIVE_LAYER_NUMERIC_FIELDS_ALIASES,
self.DEFAULT_OPERATOR, self.NODE_TYPES, self.OPERATORS,
self.json_str.replace('\n', ''), str(self.DEV_MODE).lower())
log_msg(msg)