class GroupSelectParameterWidget(GenericParameterWidget):
"""Widget class for Group Select Parameter."""
def __init__(self, parameter, parent=None):
"""Constructor.
:param parameter: A GroupSelectParameter object.
:type parameter: GroupSelectParameter
"""
QWidget.__init__(self, parent)
self._parameter = parameter
# Store spin box
self.spin_boxes = {}
# Create elements
# Label (name)
self.label = QLabel(self._parameter.name)
# Layouts
self.main_layout = QVBoxLayout()
self.input_layout = QVBoxLayout()
# _inner_input_layout must be filled with widget in the child class
self.inner_input_layout = QVBoxLayout()
self.radio_button_layout = QGridLayout()
# Create radio button group
self.input_button_group = QButtonGroup()
# List widget
self.list_widget = QListWidget()
self.list_widget.setSelectionMode(QAbstractItemView.ExtendedSelection)
self.list_widget.setDragDropMode(QAbstractItemView.DragDrop)
self.list_widget.setDefaultDropAction(Qt.MoveAction)
self.list_widget.setEnabled(False)
self.list_widget.setSizePolicy(QSizePolicy.Maximum,
QSizePolicy.Expanding)
for i, key in enumerate(self._parameter.options):
value = self._parameter.options[key]
radio_button = QRadioButton(value.get('label'))
self.radio_button_layout.addWidget(radio_button, i, 0)
if value.get('type') == SINGLE_DYNAMIC:
double_spin_box = QDoubleSpinBox()
self.radio_button_layout.addWidget(double_spin_box, i, 1)
double_spin_box.setValue(value.get('value', 0))
double_spin_box.setMinimum(
value.get('constraint', {}).get('min', 0))
double_spin_box.setMaximum(
value.get('constraint', {}).get('max', 1))
double_spin_box.setSingleStep(
value.get('constraint', {}).get('step', 0.01))
step = double_spin_box.singleStep()
if step > 1:
precision = 0
else:
precision = len(str(step).split('.')[1])
if precision > 3:
precision = 3
double_spin_box.setDecimals(precision)
self.spin_boxes[key] = double_spin_box
# Enable spin box depends on the selected option
if self._parameter.selected == key:
double_spin_box.setEnabled(True)
else:
double_spin_box.setEnabled(False)
elif value.get('type') == STATIC:
static_value = value.get('value', 0)
if static_value is not None:
self.radio_button_layout.addWidget(
QLabel(str(static_value)), i, 1)
elif value.get('type') == MULTIPLE_DYNAMIC:
selected_fields = value.get('value', [])
if self._parameter.selected == key:
self.list_widget.setEnabled(True)
else:
self.list_widget.setEnabled(False)
self.input_button_group.addButton(radio_button, i)
if self._parameter.selected == key:
radio_button.setChecked(True)
# Help text
self.help_label = QLabel(self._parameter.help_text)
self.help_label.setSizePolicy(QSizePolicy.Maximum,
QSizePolicy.Expanding)
self.help_label.setWordWrap(True)
self.help_label.setAlignment(Qt.AlignTop)
self.inner_input_layout.addLayout(self.radio_button_layout)
self.inner_input_layout.addWidget(self.list_widget)
# Put elements into layouts
self.input_layout.addWidget(self.label)
self.input_layout.addLayout(self.inner_input_layout)
self.help_layout = QVBoxLayout()
self.help_layout.addWidget(self.help_label)
self.main_layout.addLayout(self.input_layout)
self.main_layout.addLayout(self.help_layout)
self.setLayout(self.main_layout)
self.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Expanding)
# Update list widget
self.update_list_widget()
# Connect signal
self.input_button_group.buttonClicked.connect(
self.radio_buttons_clicked)
def get_parameter(self):
"""Obtain list parameter object from the current widget state.
:returns: A DefaultValueParameter from the current state of widget
:rtype: DefaultValueParameter
"""
# Set value for each key
for key, value in self._parameter.options.items():
if value.get('type') == STATIC:
continue
elif value.get('type') == SINGLE_DYNAMIC:
new_value = self.spin_boxes.get(key).value()
self._parameter.set_value_for_key(key, new_value)
elif value.get('type') == MULTIPLE_DYNAMIC:
# Need to iterate through all items
items = []
for index in xrange(self.list_widget.count()):
items.append(self.list_widget.item(index))
new_value = [i.text() for i in items]
self._parameter.set_value_for_key(key, new_value)
# Get selected radio button
radio_button_checked_id = self.input_button_group.checkedId()
# No radio button checked, then default value = None
if radio_button_checked_id == -1:
self._parameter.selected = None
else:
self._parameter.selected = self._parameter.options.keys(
)[radio_button_checked_id]
return self._parameter
def update_list_widget(self):
"""Update list widget when radio button is clicked."""
# Get selected radio button
radio_button_checked_id = self.input_button_group.checkedId()
# No radio button checked, then default value = None
if radio_button_checked_id > -1:
selected_dict = self._parameter.options.values(
)[radio_button_checked_id]
if selected_dict.get('type') == MULTIPLE_DYNAMIC:
for field in selected_dict.get('value'):
# Update list widget
field_item = QListWidgetItem(self.list_widget)
field_item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable
| Qt.ItemIsDragEnabled)
field_item.setData(Qt.UserRole, field)
field_item.setText(field)
self.list_widget.addItem(field_item)
def radio_buttons_clicked(self):
"""Handler when selected radio button changed."""
# Disable all spin boxes
for spin_box in self.spin_boxes.values():
spin_box.setEnabled(False)
# Disable list widget
self.list_widget.setEnabled(False)
# Get selected radio button
radio_button_checked_id = self.input_button_group.checkedId()
if radio_button_checked_id > -1:
selected_value = self._parameter.options.values(
)[radio_button_checked_id]
if selected_value.get('type') == MULTIPLE_DYNAMIC:
# Enable list widget
self.list_widget.setEnabled(True)
elif selected_value.get('type') == SINGLE_DYNAMIC:
selected_key = self._parameter.options.keys(
)[radio_button_checked_id]
self.spin_boxes[selected_key].setEnabled(True)
def select_radio_button(self, key):
"""Helper to select a radio button with key.
:param key: The key of the radio button.
:type key: str
"""
key_index = self._parameter.options.keys().index(key)
radio_button = self.input_button_group.button(key_index)
radio_button.click()
class StepKwMultiClassifications(WizardStep, FORM_CLASS):
"""InaSAFE Wizard Step Multi Classifications."""
def __init__(self, parent=None):
"""Constructor for the tab.
:param parent: widget to use as parent (Wizard Dialog).
:type parent: QWidget
"""
WizardStep.__init__(self, parent)
self.exposures = []
self.exposure_labels = []
self.exposure_combo_boxes = []
self.exposure_edit_buttons = []
self.mode = CHOOSE_MODE
self.layer_purpose = None
self.layer_mode = None
# Store the current representative state of the UI.
# self.classifications = {}
self.value_maps = {}
self.thresholds = {}
# Temporary attributes
self.threshold_classes = OrderedDict()
self.active_exposure = None
self.list_unique_values = None
self.tree_mapping_widget = None
# GUI, good for testing
self.save_button = None
# Has default threshold
# Trick for EQ raster for population #3853
self.use_default_thresholds = False
# Index of the special case exposure classification
self.special_case_index = None
def is_ready_to_next_step(self):
"""Check if the step is complete.
:returns: True if new step may be enabled.
:rtype: bool
"""
# Still editing
if self.mode == EDIT_MODE:
return False
for combo_box in self.exposure_combo_boxes:
# Enable if there is one that has classification
if combo_box.currentIndex() > 0:
return True
# Trick for EQ raster for population #3853
if self.use_default_thresholds:
return True
return False
def get_next_step(self):
"""Find the proper step when user clicks the Next button.
:returns: The step to be switched to.
:rtype: WizardStep instance or None
"""
if self.layer_purpose != layer_purpose_aggregation:
subcategory = self.parent.step_kw_subcategory.\
selected_subcategory()
else:
subcategory = {'key': None}
if is_raster_layer(self.parent.layer):
return self.parent.step_kw_source
# Check if it can go to inasafe field step
inasafe_fields = get_non_compulsory_fields(
self.layer_purpose['key'], subcategory['key'])
if not skip_inasafe_field(self.parent.layer, inasafe_fields):
return self.parent.step_kw_inasafe_fields
# Check if it can go to inasafe default field step
default_inasafe_fields = get_fields(
self.layer_purpose['key'],
subcategory['key'],
replace_null=True,
in_group=False
)
if default_inasafe_fields:
return self.parent.step_kw_default_inasafe_fields
# Any other case
return self.parent.step_kw_source
def set_wizard_step_description(self):
"""Set the text for description."""
subcategory = self.parent.step_kw_subcategory.selected_subcategory()
field = self.parent.step_kw_field.selected_fields()
is_raster = is_raster_layer(self.parent.layer)
if is_raster:
if self.layer_mode == layer_mode_continuous:
text_label = multiple_continuous_hazard_classifications_raster
else:
text_label = multiple_classified_hazard_classifications_raster
# noinspection PyAugmentAssignment
text_label = text_label % (
subcategory['name'], self.layer_purpose['name'])
else:
if self.layer_mode == layer_mode_continuous:
text_label = multiple_continuous_hazard_classifications_vector
else:
text_label = multiple_classified_hazard_classifications_vector
# noinspection PyAugmentAssignment
text_label = text_label % (
subcategory['name'], self.layer_purpose['name'], field)
self.multi_classifications_label.setText(text_label)
def setup_left_panel(self):
"""Setup the UI for left panel.
Generate all exposure, combobox, and edit button.
"""
hazard = self.parent.step_kw_subcategory.selected_subcategory()
left_panel_heading = QLabel(tr('Classifications'))
left_panel_heading.setFont(big_font)
self.left_layout.addWidget(left_panel_heading)
inner_left_layout = QGridLayout()
row = 0
for exposure in exposure_all:
special_case = False
# Filter out unsupported exposure for the hazard
if exposure in hazard['disabled_exposures']:
# Remove from the storage if the exposure is disabled
if self.layer_mode == layer_mode_continuous:
if exposure['key'] in self.thresholds:
self.thresholds.pop(exposure['key'])
else:
if exposure['key'] in self.value_maps:
self.value_maps.pop(exposure['key'])
continue
# Trick for EQ raster for population #3853
if exposure == exposure_population and hazard == hazard_earthquake:
if is_raster_layer(self.parent.layer):
if self.layer_mode == layer_mode_continuous:
self.use_default_thresholds = True
special_case = True
# Set classification for EQ Raster for Population
self.thresholds[exposure_population['key']] = {
earthquake_mmi_scale['key']: {
'classes': default_classification_thresholds(
earthquake_mmi_scale),
'active': True
}
}
# Add label
# Hazard on Exposure Classifications
label = tr(
'{hazard_name} on {exposure_name} Classifications').format(
hazard_name=hazard['name'],
exposure_name=exposure['name']
)
exposure_label = QLabel(label)
# Add combo box
exposure_combo_box = QComboBox()
hazard_classifications = hazard.get('classifications')
exposure_combo_box.addItem(tr('No classifications'))
exposure_combo_box.setItemData(
0, None, Qt.UserRole)
current_index = 0
i = 0
# Iterate through all available hazard classifications
for hazard_classification in hazard_classifications:
# Skip if the classification is not for the exposure
if 'exposures' in hazard_classification:
if exposure not in hazard_classification['exposures']:
continue
exposure_combo_box.addItem(hazard_classification['name'])
exposure_combo_box.setItemData(
i + 1, hazard_classification, Qt.UserRole)
if self.layer_mode == layer_mode_continuous:
current_hazard_classifications = self.thresholds.get(
exposure['key'])
else:
current_hazard_classifications = self.value_maps.get(
exposure['key'])
if current_hazard_classifications:
current_hazard_classification = \
current_hazard_classifications.get(
hazard_classification['key'])
if current_hazard_classification:
is_active = current_hazard_classification.get('active')
if is_active:
current_index = i + 1
i += 1
# Set current classification
exposure_combo_box.setCurrentIndex(current_index)
# Add edit button
exposure_edit_button = QPushButton(tr('Edit'))
# For special case. Raster EQ on Population.
if special_case:
mmi_index = exposure_combo_box.findText(
earthquake_mmi_scale['name'])
exposure_combo_box.setCurrentIndex(mmi_index)
exposure_combo_box.setEnabled(False)
exposure_edit_button.setEnabled(False)
tool_tip_message = tr(
'InaSAFE use default classification for Raster Earthquake '
'hazard on population.')
exposure_label.setToolTip(tool_tip_message)
exposure_combo_box.setToolTip(tool_tip_message)
exposure_edit_button.setToolTip(tool_tip_message)
else:
if current_index == 0:
# Disable if there is no classification chosen.
exposure_edit_button.setEnabled(False)
exposure_edit_button.clicked.connect(
partial(self.edit_button_clicked,
edit_button=exposure_edit_button,
exposure_combo_box=exposure_combo_box,
exposure=exposure))
exposure_combo_box.currentIndexChanged.connect(
partial(
self.classifications_combo_box_changed,
exposure=exposure,
exposure_combo_box=exposure_combo_box,
edit_button=exposure_edit_button))
# Arrange in layout
inner_left_layout.addWidget(exposure_label, row, 0)
inner_left_layout.addWidget(exposure_combo_box, row, 1)
inner_left_layout.addWidget(exposure_edit_button, row, 2)
# Adding to step's attribute
self.exposures.append(exposure)
self.exposure_combo_boxes.append(exposure_combo_box)
self.exposure_edit_buttons.append(exposure_edit_button)
self.exposure_labels.append(label)
if special_case:
self.special_case_index = len(self.exposures) - 1
row += 1
self.left_layout.addLayout(inner_left_layout)
# To push the inner_left_layout up
self.left_layout.addStretch(1)
# noinspection PyUnusedLocal
def edit_button_clicked(self, edit_button, exposure_combo_box, exposure):
"""Method to handle when an edit button is clicked.
:param edit_button: The edit button.
:type edit_button: QPushButton
:param exposure_combo_box: The combo box of the exposure, contains
list of classifications.
:type exposure_combo_box: QComboBox
:param exposure: Exposure definition.
:type exposure: dict
"""
# Note(IS): Do not change the text of edit button for now until we
# have better behaviour.
classification = self.get_classification(exposure_combo_box)
if self.mode == CHOOSE_MODE:
# Change mode
self.mode = EDIT_MODE
# Set active exposure
self.active_exposure = exposure
# Disable all edit button
for exposure_edit_button in self.exposure_edit_buttons:
exposure_edit_button.setEnabled(False)
# Except one that was clicked
# edit_button.setEnabled(True)
# Disable all combo box
for exposure_combo_box in self.exposure_combo_boxes:
exposure_combo_box.setEnabled(False)
# Change the edit button to cancel
# edit_button.setText(tr('Cancel'))
# Clear right panel
clear_layout(self.right_layout)
# Show edit threshold or value mapping
if self.layer_mode == layer_mode_continuous:
self.setup_thresholds_panel(classification)
else:
self.setup_value_mapping_panels(classification)
self.add_buttons(classification)
elif self.mode == EDIT_MODE:
# Behave the same as cancel button clicked.
self.cancel_button_clicked()
self.parent.pbnNext.setEnabled(self.is_ready_to_next_step())
def show_current_state(self):
"""Setup the UI for QTextEdit to show the current state."""
right_panel_heading = QLabel(tr('Status'))
right_panel_heading.setFont(big_font)
right_panel_heading.setSizePolicy(
QSizePolicy.Maximum, QSizePolicy.Maximum)
self.right_layout.addWidget(right_panel_heading)
message = m.Message()
if self.layer_mode == layer_mode_continuous:
title = tr('Thresholds')
else:
title = tr('Value maps')
message.add(m.Heading(title, **INFO_STYLE))
for i in range(len(self.exposures)):
message.add(m.Text(self.exposure_labels[i]))
classification = self.get_classification(
self.exposure_combo_boxes[i])
if self.layer_mode == layer_mode_continuous:
thresholds = self.thresholds.get(self.exposures[i]['key'])
if not thresholds or not classification:
message.add(m.Paragraph(tr('No classifications set.')))
continue
table = m.Table(
style_class='table table-condensed table-striped')
header = m.Row()
header.add(m.Cell(tr('Class name')))
header.add(m.Cell(tr('Minimum')))
header.add(m.Cell(tr('Maximum')))
table.add(header)
classes = classification.get('classes')
# Sort by value, put the lowest first
classes = sorted(classes, key=lambda k: k['value'])
for the_class in classes:
threshold = thresholds[classification['key']]['classes'][
the_class['key']]
row = m.Row()
row.add(m.Cell(the_class['name']))
row.add(m.Cell(threshold[0]))
row.add(m.Cell(threshold[1]))
table.add(row)
else:
value_maps = self.value_maps.get(self.exposures[i]['key'])
if not value_maps or not classification:
message.add(m.Paragraph(tr('No classifications set.')))
continue
table = m.Table(
style_class='table table-condensed table-striped')
header = m.Row()
header.add(m.Cell(tr('Class name')))
header.add(m.Cell(tr('Value')))
table.add(header)
classes = classification.get('classes')
# Sort by value, put the lowest first
classes = sorted(classes, key=lambda k: k['value'])
for the_class in classes:
value_map = value_maps[classification['key']][
'classes'].get(the_class['key'], [])
row = m.Row()
row.add(m.Cell(the_class['name']))
row.add(m.Cell(', '.join([str(v) for v in value_map])))
table.add(row)
message.add(table)
# status_text_edit = QTextBrowser(None)
status_text_edit = QWebView(None)
status_text_edit.setSizePolicy(
QSizePolicy.Ignored,
QSizePolicy.Ignored)
status_text_edit.page().mainFrame().setScrollBarPolicy(
Qt.Horizontal,
Qt.ScrollBarAlwaysOff)
html_string = html_header() + message.to_html() + html_footer()
status_text_edit.setHtml(html_string)
self.right_layout.addWidget(status_text_edit)
def set_widgets(self):
"""Set widgets on the Multi classification step."""
self.clear()
self.layer_mode = self.parent.step_kw_layermode.selected_layermode()
self.layer_purpose = self.parent.step_kw_purpose.selected_purpose()
self.set_current_state()
# Set the step description
self.set_wizard_step_description()
# Set the left panel
self.setup_left_panel()
# Set the right panel, for the beginning show the viewer
self.show_current_state()
def clear(self):
"""Clear current state."""
self.exposures = []
self.exposure_labels = []
self.exposure_combo_boxes = []
self.exposure_edit_buttons = []
self.mode = CHOOSE_MODE
self.layer_purpose = None
self.layer_mode = None
self.special_case_index = None
self.value_maps = {}
self.thresholds = {}
# Temporary attributes
self.threshold_classes = OrderedDict()
self.active_exposure = None
self.list_unique_values = None
self.tree_mapping_widget = None
clear_layout(self.left_layout)
clear_layout(self.right_layout)
def get_current_state(self):
"""Obtain current classification and value map / threshold."""
def clean_state(dictionary):
"""Clean dictionary from bad value.
:param dictionary: Dictionary of value maps or thresholds.
:type dictionary: dict
:returns: Clean state.
:rtype: dict
"""
clean_dictionary = {
k: v for k, v in dictionary.items()
if isinstance(v, dict)}
return clean_dictionary
if self.layer_mode == layer_mode_continuous:
output = {'thresholds': clean_state(self.thresholds)}
key = 'thresholds'
else:
output = {'value_maps': clean_state(self.value_maps)}
key = 'value_maps'
# Clean non existing hazard class key
empty_exposure_classifications = []
for the_exposure, the_hazard_classifications in output[key].items():
for the_hazard_classification in the_hazard_classifications.\
keys():
invalid_classifications = []
if not definition(the_hazard_classification):
invalid_classifications.append(
the_hazard_classification)
for invalid_classification in invalid_classifications:
the_hazard_classifications.pop(invalid_classification)
if not the_hazard_classifications:
empty_exposure_classifications.append(the_exposure)
for empty_exposure_classification in empty_exposure_classifications:
output[key].pop(empty_exposure_classification)
return output
@staticmethod
def get_classification(combo_box):
"""Helper to obtain the classification from a combo box.
:param combo_box: A classification combo box.
:type combo_box: QComboBox.
:returns: Classification definitions.
:rtype: dict
"""
return combo_box.itemData(combo_box.currentIndex(), Qt.UserRole)
def setup_thresholds_panel(self, classification):
"""Setup threshold panel in the right panel.
:param classification: Classification definition.
:type classification: dict
"""
# Set text in the label
layer_purpose = self.parent.step_kw_purpose.selected_purpose()
layer_subcategory = self.parent.step_kw_subcategory.\
selected_subcategory()
if is_raster_layer(self.parent.layer):
statistics = self.parent.layer.dataProvider().bandStatistics(
1, QgsRasterBandStats.All, self.parent.layer.extent(), 0)
description_text = continuous_raster_question % (
layer_purpose['name'],
layer_subcategory['name'],
classification['name'],
statistics.minimumValue,
statistics.maximumValue)
else:
field_name = self.parent.step_kw_field.selected_fields()
field_index = self.parent.layer.fieldNameIndex(field_name)
min_value_layer = self.parent.layer.minimumValue(field_index)
max_value_layer = self.parent.layer.maximumValue(field_index)
description_text = continuous_vector_question % (
layer_purpose['name'],
layer_subcategory['name'],
field_name,
classification['name'],
min_value_layer,
max_value_layer)
# Set description
description_label = QLabel(description_text)
description_label.setWordWrap(True)
self.right_layout.addWidget(description_label)
if self.thresholds:
thresholds = self.thresholds
else:
thresholds = self.parent.get_existing_keyword('thresholds')
selected_unit = self.parent.step_kw_unit.selected_unit()['key']
self.threshold_classes = OrderedDict()
classes = classification.get('classes')
# Sort by value, put the lowest first
classes = sorted(classes, key=lambda the_key: the_key['value'])
grid_layout_thresholds = QGridLayout()
for i, the_class in enumerate(classes):
class_layout = QHBoxLayout()
# Class label
class_label = QLabel(the_class['name'])
# Min label
min_label = QLabel(tr('Min >'))
# Min value as double spin
min_value_input = QDoubleSpinBox()
# TODO(IS) We can set the min and max depends on the unit, later
min_value_input.setMinimum(0)
min_value_input.setMaximum(999999)
if thresholds.get(self.active_exposure['key']):
exposure_thresholds = thresholds.get(
self.active_exposure['key'])
if exposure_thresholds.get(classification['key']):
exposure_thresholds_classifications = exposure_thresholds\
.get(classification['key'])
min_value_input.setValue(
exposure_thresholds_classifications['classes'][
the_class['key']][0])
else:
default_min = the_class['numeric_default_min']
if isinstance(default_min, dict):
default_min = the_class[
'numeric_default_min'][selected_unit]
min_value_input.setValue(default_min)
else:
default_min = the_class['numeric_default_min']
if isinstance(default_min, dict):
default_min = the_class[
'numeric_default_min'][selected_unit]
min_value_input.setValue(default_min)
min_value_input.setSingleStep(0.1)
# Max label
max_label = QLabel(tr('Max <='))
# Max value as double spin
max_value_input = QDoubleSpinBox()
# TODO(IS) We can set the min and max depends on the unit, later
max_value_input.setMinimum(0)
max_value_input.setMaximum(999999)
if thresholds.get(self.active_exposure['key']):
exposure_thresholds = thresholds.get(
self.active_exposure['key'])
if exposure_thresholds.get(classification['key']):
exposure_thresholds_classifications = exposure_thresholds \
.get(classification['key'])
max_value_input.setValue(
exposure_thresholds_classifications['classes'][
the_class['key']][1])
else:
default_max = the_class['numeric_default_max']
if isinstance(default_max, dict):
default_max = the_class[
'numeric_default_max'][selected_unit]
max_value_input.setValue(default_max)
else:
default_max = the_class['numeric_default_max']
if isinstance(default_max, dict):
default_max = the_class[
'numeric_default_max'][selected_unit]
max_value_input.setValue(default_max)
max_value_input.setSingleStep(0.1)
# Add to class_layout
class_layout.addWidget(min_label)
class_layout.addWidget(min_value_input)
class_layout.addWidget(max_label)
class_layout.addWidget(max_value_input)
class_layout.setStretch(0, 1)
class_layout.setStretch(1, 2)
class_layout.setStretch(2, 1)
class_layout.setStretch(3, 2)
# Add to grid_layout
grid_layout_thresholds.addWidget(class_label, i, 0)
grid_layout_thresholds.addLayout(class_layout, i, 1)
self.threshold_classes[the_class['key']] = [
min_value_input, max_value_input]
grid_layout_thresholds.setColumnStretch(0, 1)
grid_layout_thresholds.setColumnStretch(0, 2)
def min_max_changed(double_spin_index, mode):
"""Slot when min or max value change.
:param double_spin_index: The index of the double spin.
:type double_spin_index: int
:param mode: The flag to indicate the min or max value.
:type mode: int
"""
if mode == MAX_VALUE_MODE:
current_max_value = self.threshold_classes.values()[
double_spin_index][1]
target_min_value = self.threshold_classes.values()[
double_spin_index + 1][0]
if current_max_value.value() != target_min_value.value():
target_min_value.setValue(current_max_value.value())
elif mode == MIN_VALUE_MODE:
current_min_value = self.threshold_classes.values()[
double_spin_index][0]
target_max_value = self.threshold_classes.values()[
double_spin_index - 1][1]
if current_min_value.value() != target_max_value.value():
target_max_value.setValue(current_min_value.value())
# Set behaviour
for k, v in self.threshold_classes.items():
index = self.threshold_classes.keys().index(k)
if index < len(self.threshold_classes) - 1:
# Max value changed
v[1].valueChanged.connect(partial(
min_max_changed,
double_spin_index=index,
mode=MAX_VALUE_MODE))
if index > 0:
# Min value
v[0].valueChanged.connect(partial(
min_max_changed,
double_spin_index=index,
mode=MIN_VALUE_MODE))
grid_layout_thresholds.setSpacing(0)
self.right_layout.addLayout(grid_layout_thresholds)
def add_buttons(self, classification):
"""Helper to setup 3 buttons.
:param classification: The current classification.
:type classification: dict
"""
# Note(IS): Until we have good behaviour, we will disable load
# default and cancel button.
# Add 3 buttons: Load default, Cancel, Save
# load_default_button = QPushButton(tr('Load Default'))
# cancel_button = QPushButton(tr('Cancel'))
self.save_button = QPushButton(tr('Save'))
# Action for buttons
# cancel_button.clicked.connect(self.cancel_button_clicked)
self.save_button.clicked.connect(
partial(self.save_button_clicked, classification=classification))
button_layout = QHBoxLayout()
# button_layout.addWidget(load_default_button)
button_layout.addStretch(1)
# button_layout.addWidget(cancel_button)
button_layout.addWidget(self.save_button)
button_layout.setStretch(0, 3)
button_layout.setStretch(1, 1)
# button_layout.setStretch(2, 1)
# button_layout.setStretch(3, 1)
self.right_layout.addLayout(button_layout)
def setup_value_mapping_panels(self, classification):
"""Setup value mapping panel in the right panel.
:param classification: Classification definition.
:type classification: dict
"""
# Set text in the label
layer_purpose = self.parent.step_kw_purpose.selected_purpose()
layer_subcategory = self.parent.step_kw_subcategory. \
selected_subcategory()
if is_raster_layer(self.parent.layer):
description_text = classify_raster_question % (
layer_subcategory['name'],
layer_purpose['name'],
classification['name'])
dataset = gdal.Open(self.parent.layer.source(), GA_ReadOnly)
active_band = self.parent.step_kw_band_selector.selected_band()
unique_values = numpy.unique(numpy.array(
dataset.GetRasterBand(active_band).ReadAsArray()))
field_type = 0
# Convert datatype to a json serializable type
if numpy.issubdtype(unique_values.dtype, float):
unique_values = [float(i) for i in unique_values]
else:
unique_values = [int(i) for i in unique_values]
else:
field = self.parent.step_kw_field.selected_fields()
field_index = self.parent.layer.dataProvider().fields(). \
indexFromName(field)
field_type = self.parent.layer.dataProvider(). \
fields()[field_index].type()
description_text = classify_vector_question % (
layer_subcategory['name'],
layer_purpose['name'],
classification['name'],
field.upper())
unique_values = self.parent.layer.uniqueValues(field_index)
# Set description
description_label = QLabel(description_text)
description_label.setWordWrap(True)
self.right_layout.addWidget(description_label)
self.list_unique_values = QListWidget()
self.list_unique_values.setDragDropMode(QAbstractItemView.DragDrop)
self.list_unique_values.setDefaultDropAction(Qt.MoveAction)
self.tree_mapping_widget = QTreeWidget()
self.tree_mapping_widget.setDragDropMode(QAbstractItemView.DragDrop)
self.tree_mapping_widget.setDefaultDropAction(Qt.MoveAction)
self.tree_mapping_widget.header().hide()
self.tree_mapping_widget.itemChanged.connect(
self.update_dragged_item_flags)
value_mapping_layout = QHBoxLayout()
value_mapping_layout.addWidget(self.list_unique_values)
value_mapping_layout.addWidget(self.tree_mapping_widget)
self.right_layout.addLayout(value_mapping_layout)
default_classes = classification['classes']
# Assign unique values to classes (according to default)
unassigned_values = list()
assigned_values = dict()
for default_class in default_classes:
assigned_values[default_class['key']] = list()
for unique_value in unique_values:
if unique_value is None or isinstance(
unique_value, QPyNullVariant):
# Don't classify features with NULL value
continue
# Capitalization of the value and removing '_' (raw OSM data).
value_as_string = unicode(unique_value).upper().replace('_', ' ')
assigned = False
for default_class in default_classes:
if 'string_defaults' in default_class:
condition_1 = (
field_type > 9 and
value_as_string in [
c.upper() for c in
default_class['string_defaults']])
else:
condition_1 = False
condition_2 = (
field_type < 10 and
'numeric_default_min' in default_class and
'numeric_default_max' in default_class and (
default_class['numeric_default_min'] <= unique_value <
default_class['numeric_default_max']))
if condition_1 or condition_2:
assigned_values[default_class['key']] += [unique_value]
assigned = True
if not assigned:
# add to unassigned values list otherwise
unassigned_values += [unique_value]
self.populate_classified_values(
unassigned_values,
assigned_values,
default_classes,
self.list_unique_values,
self.tree_mapping_widget
)
# Current value map for exposure and classification
available_classifications = self.value_maps.get(
self.active_exposure['key'])
if not available_classifications:
return
# Get active one
current_classification = available_classifications.get(
classification['key'])
if not current_classification:
return
current_value_map = current_classification.get('classes')
if not current_value_map:
return
unassigned_values = list()
assigned_values = dict()
for default_class in default_classes:
assigned_values[default_class['key']] = list()
for unique_value in unique_values:
if unique_value is None or isinstance(
unique_value, QPyNullVariant):
# Don't classify features with NULL value
continue
# check in value map
assigned = False
for key, value_list in current_value_map.items():
if unique_value in value_list and key in assigned_values:
assigned_values[key] += [unique_value]
assigned = True
if not assigned:
unassigned_values += [unique_value]
self.populate_classified_values(
unassigned_values,
assigned_values,
default_classes,
self.list_unique_values,
self.tree_mapping_widget
)
# noinspection PyMethodMayBeStatic
def update_dragged_item_flags(self, item):
"""Fix the drop flag after the item is dropped.
Check if it looks like an item dragged from QListWidget
to QTreeWidget and disable the drop flag.
For some reasons the flag is set when dragging.
:param item: Item which is dragged.
:type item: QTreeWidgetItem
.. note:: This is a slot executed when the item change.
"""
if int(item.flags() & Qt.ItemIsDropEnabled) \
and int(item.flags() & Qt.ItemIsDragEnabled):
item.setFlags(item.flags() & ~Qt.ItemIsDropEnabled)
@staticmethod
def populate_classified_values(
unassigned_values, assigned_values, default_classes,
list_unique_values, tree_mapping_widget):
"""Populate lstUniqueValues and treeClasses.from the parameters.
:param unassigned_values: List of values that haven't been assigned
to a class. It will be put in list_unique_values.
:type unassigned_values: list
:param assigned_values: Dictionary with class as the key and list of
value as the value of the dictionary. It will be put in
tree_mapping_widget.
:type assigned_values: dict
:param default_classes: Default classes from unit.
:type default_classes: list
:param list_unique_values: List Widget for unique values
:type list_unique_values: QListWidget
:param tree_mapping_widget: Tree Widget for classifying.
:type tree_mapping_widget: QTreeWidget
"""
# Populate the unique values list
list_unique_values.clear()
list_unique_values.setSelectionMode(
QAbstractItemView.ExtendedSelection)
for value in unassigned_values:
value_as_string = value is not None and unicode(value) or 'NULL'
list_item = QListWidgetItem(list_unique_values)
list_item.setFlags(
Qt.ItemIsEnabled |
Qt.ItemIsSelectable |
Qt.ItemIsDragEnabled)
list_item.setData(Qt.UserRole, value)
list_item.setText(value_as_string)
list_unique_values.addItem(list_item)
# Populate assigned values tree
tree_mapping_widget.clear()
bold_font = QFont()
bold_font.setItalic(True)
bold_font.setBold(True)
bold_font.setWeight(75)
tree_mapping_widget.invisibleRootItem().setFlags(
Qt.ItemIsEnabled)
for default_class in default_classes:
# Create branch for class
tree_branch = QTreeWidgetItem(tree_mapping_widget)
tree_branch.setFlags(
Qt.ItemIsDropEnabled | Qt.ItemIsEnabled)
tree_branch.setExpanded(True)
tree_branch.setFont(0, bold_font)
if 'name' in default_class:
default_class_name = default_class['name']
else:
default_class_name = default_class['key']
tree_branch.setText(0, default_class_name)
tree_branch.setData(0, Qt.UserRole, default_class['key'])
if 'description' in default_class:
tree_branch.setToolTip(0, default_class['description'])
# Assign known values
for value in assigned_values[default_class['key']]:
string_value = value is not None and unicode(value) or 'NULL'
tree_leaf = QTreeWidgetItem(tree_branch)
tree_leaf.setFlags(
Qt.ItemIsEnabled |
Qt.ItemIsSelectable |
Qt.ItemIsDragEnabled)
tree_leaf.setData(0, Qt.UserRole, value)
tree_leaf.setText(0, string_value)
def cancel_button_clicked(self):
"""Action for cancel button clicked."""
# Change mode
self.mode = CHOOSE_MODE
# Enable all edit buttons and combo boxes
for i in range(len(self.exposures)):
if i == self.special_case_index:
self.exposure_edit_buttons[i].setEnabled(False)
self.exposure_combo_boxes[i].setEnabled(False)
continue
if self.get_classification(self.exposure_combo_boxes[i]):
self.exposure_edit_buttons[i].setEnabled(True)
else:
self.exposure_edit_buttons[i].setEnabled(False)
# self.exposure_edit_buttons[i].setText(tr('Edit'))
self.exposure_combo_boxes[i].setEnabled(True)
# Clear right panel
clear_layout(self.right_layout)
# Show current state
self.show_current_state()
# Unset active exposure
self.active_exposure = None
self.parent.pbnNext.setEnabled(self.is_ready_to_next_step())
def save_button_clicked(self, classification):
"""Action for save button clicked.
:param classification: The classification that being edited.
:type classification: dict
"""
# Save current edit
if self.layer_mode == layer_mode_continuous:
thresholds = self.get_threshold()
classification_class = {
'classes': thresholds,
'active': True
}
if self.thresholds.get(self.active_exposure['key']):
# Set other class to not active
for current_classification in self.thresholds.get(
self.active_exposure['key']).values():
current_classification['active'] = False
else:
self.thresholds[self.active_exposure['key']] = {}
self.thresholds[self.active_exposure['key']][
classification['key']] = classification_class
else:
value_maps = self.get_value_map()
classification_class = {
'classes': value_maps,
'active': True
}
if self.value_maps.get(self.active_exposure['key']):
# Set other class to not active
for current_classification in self.value_maps.get(
self.active_exposure['key']).values():
current_classification['active'] = False
else:
self.value_maps[self.active_exposure['key']] = {}
self.value_maps[self.active_exposure['key']][
classification['key']] = classification_class
# Back to choose mode
self.cancel_button_clicked()
def get_threshold(self):
"""Return threshold based on current state."""
value_map = dict()
for key, value in self.threshold_classes.items():
value_map[key] = [
value[0].value(),
value[1].value(),
]
return value_map
def get_value_map(self):
"""Obtain the value-to-class mapping set by user.
:returns: The complete mapping as a dict of lists.
:rtype: dict
"""
value_map = {}
tree_clone = self.tree_mapping_widget.invisibleRootItem().clone()
for tree_branch in tree_clone.takeChildren():
value_list = []
for tree_leaf in tree_branch.takeChildren():
value_list += [tree_leaf.data(0, Qt.UserRole)]
if value_list:
value_map[tree_branch.data(0, Qt.UserRole)] = value_list
return value_map
def set_current_state(self):
""""Helper to set the state of the step from current keywords."""
if not self.thresholds:
self.thresholds = self.parent.get_existing_keyword('thresholds')
if not self.value_maps:
self.value_maps = self.parent.get_existing_keyword('value_maps')
def classifications_combo_box_changed(
self, index, exposure, exposure_combo_box, edit_button):
"""Action when classification combo box changed.
:param index: The index of the combo box.
:type index: int
:param exposure: The exposure associated with the combo box.
:type exposure: dict
:param exposure_combo_box: Combo box for the classification.
:type exposure_combo_box: QComboBox
:param edit_button: The edit button associate with combo box.
:type edit_button: QPushButton
"""
# Disable button if it's no classification
edit_button.setEnabled(bool(index))
classification = self.get_classification(exposure_combo_box)
self.activate_classification(exposure, classification)
clear_layout(self.right_layout)
self.show_current_state()
self.parent.pbnNext.setEnabled(self.is_ready_to_next_step())
# Open edit panel directly
edit_button.click()
def activate_classification(self, exposure, classification=None):
"""Set active to True for classification for the exposure.
If classification = None, all classification set active = False.
:param exposure: Exposure definition.
:type exposure: dict
:param classification: Classification definition.
:type classification: dict
"""
if self.layer_mode == layer_mode_continuous:
selected_unit = self.parent.step_kw_unit.selected_unit()['key']
target = self.thresholds.get(exposure['key'])
if target is None:
self.thresholds[exposure['key']] = {}
target = self.thresholds.get(exposure['key'])
else:
selected_unit = None
target = self.value_maps.get(exposure['key'])
if target is None:
self.value_maps[exposure['key']] = {}
target = self.value_maps.get(exposure['key'])
if classification is not None:
if classification['key'] not in target:
if self.layer_mode == layer_mode_continuous:
default_classes = default_classification_thresholds(
classification, selected_unit)
target[classification['key']] = {
'classes': default_classes,
'active': True
}
else:
default_classes = default_classification_value_maps(
classification)
target[classification['key']] = {
'classes': default_classes,
'active': True
}
return
for classification_key, value in target.items():
if classification is None:
value['active'] = False
continue
if classification_key == classification['key']:
value['active'] = True
else:
value['active'] = False
@property
def step_name(self):
"""Get the human friendly name for the wizard step.
:returns: The name of the wizard step.
:rtype: str
"""
return tr('Multi Classification Step')
def help_content(self):
"""Return the content of help for this step wizard.
We only needs to re-implement this method in each wizard step.
:returns: A message object contains help.
:rtype: m.Message
"""
message = m.Message()
message.add(m.Paragraph(tr(
'In this wizard step: {step_name}, you will be able to set the '
'classification that you will use per exposure type. You can also '
'set the threshold or value map for each classification.'
).format(step_name=self.step_name)))
return message
class GroupSelectParameterWidget(GenericParameterWidget):
"""Widget class for Group Select Parameter."""
def __init__(self, parameter, parent=None):
"""Constructor.
:param parameter: A GroupSelectParameter object.
:type parameter: GroupSelectParameter
"""
QWidget.__init__(self, parent)
self._parameter = parameter
# Store spin box
self.spin_boxes = {}
# Create elements
# Label (name)
self.label = QLabel(self._parameter.name)
# Layouts
self.main_layout = QVBoxLayout()
self.input_layout = QVBoxLayout()
# _inner_input_layout must be filled with widget in the child class
self.inner_input_layout = QVBoxLayout()
self.radio_button_layout = QGridLayout()
# Create radio button group
self.input_button_group = QButtonGroup()
# List widget
self.list_widget = QListWidget()
self.list_widget.setSelectionMode(QAbstractItemView.ExtendedSelection)
self.list_widget.setDragDropMode(QAbstractItemView.DragDrop)
self.list_widget.setDefaultDropAction(Qt.MoveAction)
self.list_widget.setEnabled(False)
self.list_widget.setSizePolicy(
QSizePolicy.Maximum, QSizePolicy.Expanding)
for i, key in enumerate(self._parameter.options):
value = self._parameter.options[key]
radio_button = QRadioButton(value.get('label'))
self.radio_button_layout.addWidget(radio_button, i, 0)
if value.get('type') == SINGLE_DYNAMIC:
double_spin_box = QDoubleSpinBox()
self.radio_button_layout.addWidget(double_spin_box, i, 1)
double_spin_box.setValue(value.get('value', 0))
double_spin_box.setMinimum(
value.get('constraint', {}).get('min', 0))
double_spin_box.setMaximum(value.get(
'constraint', {}).get('max', 1))
double_spin_box.setSingleStep(
value.get('constraint', {}).get('step', 0.01))
step = double_spin_box.singleStep()
if step > 1:
precision = 0
else:
precision = len(str(step).split('.')[1])
if precision > 3:
precision = 3
double_spin_box.setDecimals(precision)
self.spin_boxes[key] = double_spin_box
# Enable spin box depends on the selected option
if self._parameter.selected == key:
double_spin_box.setEnabled(True)
else:
double_spin_box.setEnabled(False)
elif value.get('type') == STATIC:
static_value = value.get('value', 0)
if static_value is not None:
self.radio_button_layout.addWidget(
QLabel(str(static_value)), i, 1)
elif value.get('type') == MULTIPLE_DYNAMIC:
selected_fields = value.get('value', [])
if self._parameter.selected == key:
self.list_widget.setEnabled(True)
else:
self.list_widget.setEnabled(False)
self.input_button_group.addButton(radio_button, i)
if self._parameter.selected == key:
radio_button.setChecked(True)
# Help text
self.help_label = QLabel(self._parameter.help_text)
self.help_label.setSizePolicy(
QSizePolicy.Maximum, QSizePolicy.Expanding)
self.help_label.setWordWrap(True)
self.help_label.setAlignment(Qt.AlignTop)
self.inner_input_layout.addLayout(self.radio_button_layout)
self.inner_input_layout.addWidget(self.list_widget)
# Put elements into layouts
self.input_layout.addWidget(self.label)
self.input_layout.addLayout(self.inner_input_layout)
self.help_layout = QVBoxLayout()
self.help_layout.addWidget(self.help_label)
self.main_layout.addLayout(self.input_layout)
self.main_layout.addLayout(self.help_layout)
self.setLayout(self.main_layout)
self.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Expanding)
# Update list widget
self.update_list_widget()
# Connect signal
self.input_button_group.buttonClicked.connect(
self.radio_buttons_clicked)
def get_parameter(self):
"""Obtain list parameter object from the current widget state.
:returns: A DefaultValueParameter from the current state of widget
:rtype: DefaultValueParameter
"""
# Set value for each key
for key, value in self._parameter.options.items():
if value.get('type') == STATIC:
continue
elif value.get('type') == SINGLE_DYNAMIC:
new_value = self.spin_boxes.get(key).value()
self._parameter.set_value_for_key(key, new_value)
elif value.get('type') == MULTIPLE_DYNAMIC:
# Need to iterate through all items
items = []
for index in xrange(self.list_widget.count()):
items.append(self.list_widget.item(index))
new_value = [i.text() for i in items]
self._parameter.set_value_for_key(key, new_value)
# Get selected radio button
radio_button_checked_id = self.input_button_group.checkedId()
# No radio button checked, then default value = None
if radio_button_checked_id == -1:
self._parameter.selected = None
else:
self._parameter.selected = self._parameter.options.keys()[
radio_button_checked_id]
return self._parameter
def update_list_widget(self):
"""Update list widget when radio button is clicked."""
# Get selected radio button
radio_button_checked_id = self.input_button_group.checkedId()
# No radio button checked, then default value = None
if radio_button_checked_id > -1:
selected_dict = self._parameter.options.values()[
radio_button_checked_id]
if selected_dict.get('type') == MULTIPLE_DYNAMIC:
for field in selected_dict.get('value'):
# Update list widget
field_item = QListWidgetItem(self.list_widget)
field_item.setFlags(
Qt.ItemIsEnabled |
Qt.ItemIsSelectable |
Qt.ItemIsDragEnabled)
field_item.setData(Qt.UserRole, field)
field_item.setText(field)
self.list_widget.addItem(field_item)
def radio_buttons_clicked(self):
"""Handler when selected radio button changed."""
# Disable all spin boxes
for spin_box in self.spin_boxes.values():
spin_box.setEnabled(False)
# Disable list widget
self.list_widget.setEnabled(False)
# Get selected radio button
radio_button_checked_id = self.input_button_group.checkedId()
if radio_button_checked_id > -1:
selected_value = self._parameter.options.values()[
radio_button_checked_id]
if selected_value.get('type') == MULTIPLE_DYNAMIC:
# Enable list widget
self.list_widget.setEnabled(True)
elif selected_value.get('type') == SINGLE_DYNAMIC:
selected_key = self._parameter.options.keys()[
radio_button_checked_id]
self.spin_boxes[selected_key].setEnabled(True)
def select_radio_button(self, key):
"""Helper to select a radio button with key.
:param key: The key of the radio button.
:type key: str
"""
key_index = self._parameter.options.keys().index(key)
radio_button = self.input_button_group.button(key_index)
radio_button.click()
class FieldMappingTab(QWidget, object):
"""Widget class for field mapping."""
def __init__(self, field_group=None, parent=None, iface=None):
"""Constructor."""
# Init from parent class
QWidget.__init__(self, parent)
# Attributes
self.layer = None
self.metadata = {}
self.parent = parent
self.iface = iface
self.field_group = field_group
self.setting = QSettings() # TODO(IS): Make dynamic
# Main container
self.main_layout = QVBoxLayout()
# Inner layout
self.header_layout = QHBoxLayout()
self.content_layout = QHBoxLayout()
self.footer_layout = QHBoxLayout()
# Header
self.header_label = QLabel()
self.header_label.setWordWrap(True)
# Content
self.field_layout = QVBoxLayout()
self.parameter_layout = QHBoxLayout()
self.field_description = QLabel(tr('List of fields'))
self.field_list = QListWidget()
self.field_list.setSelectionMode(QAbstractItemView.ExtendedSelection)
self.field_list.setDragDropMode(QAbstractItemView.DragDrop)
self.field_list.setDefaultDropAction(Qt.MoveAction)
self.field_list.setSizePolicy(
QSizePolicy.Maximum, QSizePolicy.Expanding)
# noinspection PyUnresolvedReferences
self.field_list.itemSelectionChanged.connect(self.update_footer)
# Footer
self.footer_label = QLabel()
# Parameters
self.extra_parameters = [
(GroupSelectParameter, GroupSelectParameterWidget)
]
self.parameters = []
self.parameter_container = None
# Adding to layout
self.header_layout.addWidget(self.header_label)
self.field_layout.addWidget(self.field_description)
self.field_layout.addWidget(self.field_list)
self.field_layout.setSizeConstraint(QLayout.SetMaximumSize)
self.content_layout.addLayout(self.field_layout)
self.content_layout.addLayout(self.parameter_layout)
self.footer_layout.addWidget(self.footer_label)
self.main_layout.addLayout(self.header_layout)
self.main_layout.addLayout(self.content_layout)
self.main_layout.addLayout(self.footer_layout)
self.setLayout(self.main_layout)
def set_layer(self, layer, keywords=None):
"""Set layer and update UI accordingly.
:param layer: A vector layer that has been already patched with
metadata.
:type layer: QgsVectorLayer
:param keywords: Custom keyword for the layer.
:type keywords: dict, None
"""
self.layer = layer
if keywords is not None:
self.metadata = keywords
else:
# Check if it has keywords
if not hasattr(layer, 'keywords'):
message = 'Layer {layer_name} does not have keywords.'.format(
layer_name=layer.name())
raise KeywordNotFoundError(message)
self.metadata = layer.keywords
self.populate_parameter()
def populate_field_list(self, excluded_fields=None):
"""Helper to add field of the layer to the list.
:param excluded_fields: List of field that want to be excluded.
:type excluded_fields: list
"""
# Populate fields list
if excluded_fields is None:
excluded_fields = []
self.field_list.clear()
for field in self.layer.dataProvider().fields():
# Skip if it's excluded
if field.name() in excluded_fields:
continue
# Skip if it's not number (float, int, etc)
if field.type() not in qvariant_numbers:
continue
field_item = QListWidgetItem(self.field_list)
field_item.setFlags(
Qt.ItemIsEnabled |
Qt.ItemIsSelectable |
Qt.ItemIsDragEnabled)
field_item.setData(Qt.UserRole, field.name())
field_item.setText(field.name())
self.field_list.addItem(field_item)
def populate_parameter(self):
"""Helper to setup the parameter widget."""
used_fields = []
self.parameters = []
for field in self.field_group.get('fields', []):
selected_option = DO_NOT_USE
options = OrderedDict([
(DO_NOT_USE,
{
'label': tr('Do not use'),
'value': None,
'type': STATIC,
'constraint': {}
}),
])
# Example: count
if field['absolute']:
# Used in field options
field_label = tr('Count fields')
else: # Example: ratio
# Used in field options
field_label = tr('Ratio fields')
global_default_value = get_inasafe_default_value_qsetting(
self.setting, GLOBAL, field['key'])
options[GLOBAL_DEFAULT] = {
'label': tr('Global default'),
'value': global_default_value,
'type': STATIC,
'constraint': {}
}
default_custom_value = get_inasafe_default_value_qsetting(
self.setting, RECENT, field['key'])
custom_value = self.metadata.get(
'inasafe_default_values', {}).get(
field['key'], default_custom_value)
if field['key'] in self.metadata.get(
'inasafe_default_values', {}):
if custom_value == global_default_value:
selected_option = GLOBAL_DEFAULT
else:
selected_option = CUSTOM_VALUE
min_value = field['default_value'].get('min_value', 0)
max_value = field['default_value'].get('max_value', 100)
default_step = (max_value - min_value) / 100.0
step = field['default_value'].get('increment', default_step)
options[CUSTOM_VALUE] = {
'label': tr('Custom'),
'value': custom_value,
'type': SINGLE_DYNAMIC,
'constraint': {
'min': min_value,
'max': max_value,
'step': step
}
}
custom_fields = self.metadata.get('inasafe_fields', {}).get(
field['key'], [])
if field['key'] in self.metadata.get('inasafe_fields', {}):
selected_option = FIELDS
if isinstance(custom_fields, basestring):
custom_fields = [custom_fields]
options[FIELDS] = {
'label': field_label,
'value': custom_fields,
'type': MULTIPLE_DYNAMIC,
'constraint': {}
}
used_fields.extend(custom_fields)
parameter = GroupSelectParameter()
parameter.guid = field['key']
parameter.name = field['name']
parameter.options = options
parameter.selected = selected_option
parameter.help_text = field['help_text']
parameter.description = field['description']
self.parameters.append(parameter)
self.parameter_container = ParameterContainer(
parameters=self.parameters,
extra_parameters=self.extra_parameters,
vertical=False
)
self.parameter_container.setup_ui()
constraints = self.field_group.get('constraints', {})
for key, value in constraints.items():
self.parameter_container.add_validator(
validators[key],
kwargs=value['kwargs'],
validation_message=value['message'])
self.parameter_layout.addWidget(self.parameter_container)
# Set move or copy
if self.field_group.get('exclusive', False):
# If exclusive, do not add used field.
self.populate_field_list(excluded_fields=used_fields)
# Use move action since it's exclusive
self.field_list.setDefaultDropAction(Qt.MoveAction)
# Just make sure that the signal is disconnected
try:
# noinspection PyUnresolvedReferences
self.field_list.itemChanged.disconnect(self.drop_remove)
except TypeError:
pass
# Set header
header_text = self.field_group['description']
header_text += '\n\n' + tr(
'You can only map one field to one concept.')
else:
# If not exclusive, add all field.
self.populate_field_list()
# Use copy action since it's not exclusive
self.field_list.setDefaultDropAction(Qt.CopyAction)
# noinspection PyUnresolvedReferences
self.field_list.itemChanged.connect(
partial(self.drop_remove, field_list=self.field_list))
self.connect_drop_remove_parameter()
# Set header
header_text = self.field_group['description']
header_text += '\n\n' + tr(
'You can map one field to more than one concepts.')
self.header_label.setText(header_text)
def get_parameter_value(self):
"""Get parameter of the tab.
:returns: Dictionary of parameters by type in this format:
{'fields': {}, 'values': {}}.
:rtype: dict
"""
try:
parameters = self.parameter_container.get_parameters(True)
except InvalidValidationException as e:
raise OriginalValidationException(e)
field_parameters = {}
value_parameters = {}
for parameter in parameters:
if parameter.selected_option_type() in [SINGLE_DYNAMIC, STATIC]:
value_parameters[parameter.guid] = parameter.value
elif parameter.selected_option_type() == MULTIPLE_DYNAMIC:
field_parameters[parameter.guid] = parameter.value
return {
'fields': field_parameters,
'values': value_parameters
}
def update_footer(self):
"""Update footer when the field list change."""
field_item = self.field_list.currentItem()
if not field_item:
self.footer_label.setText('')
return
field_name = field_item.data(Qt.UserRole)
field = self.layer.fields().field(field_name)
index = self.layer.fieldNameIndex(field_name)
unique_values = self.layer.uniqueValues(index)
pretty_unique_values = ', '.join([str(v) for v in unique_values[:10]])
footer_text = tr('Field type: {0}\n').format(field.typeName())
footer_text += tr('Unique values: {0}').format(pretty_unique_values)
self.footer_label.setText(footer_text)
def connect_drop_remove_parameter(self):
parameter_widgets = self.parameter_container.get_parameter_widgets()
for parameter_widget in parameter_widgets:
field_list = parameter_widget.widget().list_widget
field_list.itemChanged.connect(
partial(self.drop_remove, field_list=field_list))
@staticmethod
def drop_remove(*args, **kwargs):
"""Action when we need to remove dropped item.
:param args: Position arguments.
:type args: list
:param kwargs: Keywords arguments.
:type kwargs: dict
"""
dropped_item = args[0]
field_list = kwargs['field_list']
num_duplicate = 0
for i in range(field_list.count()):
if dropped_item.text() == field_list.item(i).text():
num_duplicate += 1
if num_duplicate > 1:
# Notes(IS): For some reason, removeItemWidget is not working.
field_list.takeItem(field_list.row(dropped_item))
class StepKwMultiClassifications(WizardStep, FORM_CLASS):
"""InaSAFE Wizard Step Multi Classifications."""
def __init__(self, parent=None):
"""Constructor for the tab.
:param parent: widget to use as parent (Wizard Dialog).
:type parent: QWidget
"""
WizardStep.__init__(self, parent)
self.exposures = []
self.exposure_labels = []
self.exposure_combo_boxes = []
self.exposure_edit_buttons = []
self.mode = CHOOSE_MODE
self.layer_purpose = None
self.layer_mode = None
# Store the current representative state of the UI.
# self.classifications = {}
self.value_maps = {}
self.thresholds = {}
# Temporary attributes
self.threshold_classes = OrderedDict()
self.active_exposure = None
self.list_unique_values = None
self.tree_mapping_widget = None
# GUI, good for testing
self.save_button = None
# Has default threshold
# Trick for EQ raster for population #3853
self.use_default_thresholds = False
# Index of the special case exposure classification
self.special_case_index = None
def is_ready_to_next_step(self):
"""Check if the step is complete.
:returns: True if new step may be enabled.
:rtype: bool
"""
# Still editing
if self.mode == EDIT_MODE:
return False
for combo_box in self.exposure_combo_boxes:
# Enable if there is one that has classification
if combo_box.currentIndex() > 0:
return True
# Trick for EQ raster for population #3853
if self.use_default_thresholds:
return True
return False
def get_next_step(self):
"""Find the proper step when user clicks the Next button.
:returns: The step to be switched to.
:rtype: WizardStep instance or None
"""
if self.layer_purpose != layer_purpose_aggregation:
subcategory = self.parent.step_kw_subcategory.\
selected_subcategory()
else:
subcategory = {'key': None}
if is_raster_layer(self.parent.layer):
return self.parent.step_kw_source
# Check if it can go to inasafe field step
inasafe_fields = get_non_compulsory_fields(
self.layer_purpose['key'], subcategory['key'])
if not skip_inasafe_field(self.parent.layer, inasafe_fields):
return self.parent.step_kw_inasafe_fields
# Check if it can go to inasafe default field step
default_inasafe_fields = get_fields(
self.layer_purpose['key'],
subcategory['key'],
replace_null=True,
in_group=False
)
if default_inasafe_fields:
return self.parent.step_kw_default_inasafe_fields
# Any other case
return self.parent.step_kw_source
def set_wizard_step_description(self):
"""Set the text for description."""
subcategory = self.parent.step_kw_subcategory.selected_subcategory()
field = self.parent.step_kw_field.selected_fields()
is_raster = is_raster_layer(self.parent.layer)
if is_raster:
if self.layer_mode == layer_mode_continuous:
text_label = multiple_continuous_hazard_classifications_raster
else:
text_label = multiple_classified_hazard_classifications_raster
# noinspection PyAugmentAssignment
text_label = text_label % (
subcategory['name'], self.layer_purpose['name'])
else:
if self.layer_mode == layer_mode_continuous:
text_label = multiple_continuous_hazard_classifications_vector
else:
text_label = multiple_classified_hazard_classifications_vector
# noinspection PyAugmentAssignment
text_label = text_label % (
subcategory['name'], self.layer_purpose['name'], field)
self.multi_classifications_label.setText(text_label)
def setup_left_panel(self):
"""Setup the UI for left panel.
Generate all exposure, combobox, and edit button.
"""
hazard = self.parent.step_kw_subcategory.selected_subcategory()
left_panel_heading = QLabel(tr('Classifications'))
left_panel_heading.setFont(big_font)
self.left_layout.addWidget(left_panel_heading)
inner_left_layout = QGridLayout()
row = 0
for exposure in exposure_all:
special_case = False
# Filter out unsupported exposure for the hazard
if exposure in hazard['disabled_exposures']:
# Remove from the storage if the exposure is disabled
if self.layer_mode == layer_mode_continuous:
if exposure['key'] in self.thresholds:
self.thresholds.pop(exposure['key'])
else:
if exposure['key'] in self.value_maps:
self.value_maps.pop(exposure['key'])
continue
# Trick for EQ raster for population #3853
if exposure == exposure_population and hazard == hazard_earthquake:
if is_raster_layer(self.parent.layer):
if self.layer_mode == layer_mode_continuous:
self.use_default_thresholds = True
special_case = True
# Set classification for EQ Raster for Population
self.thresholds[exposure_population['key']] = {
earthquake_mmi_scale['key']: {
'classes': default_classification_thresholds(
earthquake_mmi_scale),
'active': True
}
}
# Add label
# Hazard on Exposure Classifications
label = tr(
'{hazard_name} on {exposure_name} Classifications').format(
hazard_name=hazard['name'],
exposure_name=exposure['name']
)
exposure_label = QLabel(label)
# Add combo box
exposure_combo_box = QComboBox()
hazard_classifications = hazard.get('classifications')
exposure_combo_box.addItem(tr('No classifications'))
exposure_combo_box.setItemData(
0, None, Qt.UserRole)
current_index = 0
i = 0
# Iterate through all available hazard classifications
for hazard_classification in hazard_classifications:
# Skip if the classification is not for the exposure
if 'exposures' in hazard_classification:
if exposure not in hazard_classification['exposures']:
continue
exposure_combo_box.addItem(hazard_classification['name'])
exposure_combo_box.setItemData(
i + 1, hazard_classification, Qt.UserRole)
if self.layer_mode == layer_mode_continuous:
current_hazard_classifications = self.thresholds.get(
exposure['key'])
else:
current_hazard_classifications = self.value_maps.get(
exposure['key'])
if current_hazard_classifications:
current_hazard_classification = \
current_hazard_classifications.get(
hazard_classification['key'])
if current_hazard_classification:
is_active = current_hazard_classification.get('active')
if is_active:
current_index = i + 1
i += 1
# Set current classification
exposure_combo_box.setCurrentIndex(current_index)
# Add edit button
exposure_edit_button = QPushButton(tr('Edit'))
# For special case. Raster EQ on Population.
if special_case:
mmi_index = exposure_combo_box.findText(
earthquake_mmi_scale['name'])
exposure_combo_box.setCurrentIndex(mmi_index)
exposure_combo_box.setEnabled(False)
exposure_edit_button.setEnabled(False)
tool_tip_message = tr(
'InaSAFE use default classification for Raster Earthquake '
'hazard on population.')
exposure_label.setToolTip(tool_tip_message)
exposure_combo_box.setToolTip(tool_tip_message)
exposure_edit_button.setToolTip(tool_tip_message)
else:
if current_index == 0:
# Disable if there is no classification chosen.
exposure_edit_button.setEnabled(False)
exposure_edit_button.clicked.connect(
partial(self.edit_button_clicked,
edit_button=exposure_edit_button,
exposure_combo_box=exposure_combo_box,
exposure=exposure))
exposure_combo_box.currentIndexChanged.connect(
partial(
self.classifications_combo_box_changed,
exposure=exposure,
exposure_combo_box=exposure_combo_box,
edit_button=exposure_edit_button))
# Arrange in layout
inner_left_layout.addWidget(exposure_label, row, 0)
inner_left_layout.addWidget(exposure_combo_box, row, 1)
inner_left_layout.addWidget(exposure_edit_button, row, 2)
# Adding to step's attribute
self.exposures.append(exposure)
self.exposure_combo_boxes.append(exposure_combo_box)
self.exposure_edit_buttons.append(exposure_edit_button)
self.exposure_labels.append(label)
if special_case:
self.special_case_index = len(self.exposures) - 1
row += 1
self.left_layout.addLayout(inner_left_layout)
# To push the inner_left_layout up
self.left_layout.addStretch(1)
# noinspection PyUnusedLocal
def edit_button_clicked(self, edit_button, exposure_combo_box, exposure):
"""Method to handle when an edit button is clicked.
:param edit_button: The edit button.
:type edit_button: QPushButton
:param exposure_combo_box: The combo box of the exposure, contains
list of classifications.
:type exposure_combo_box: QComboBox
:param exposure: Exposure definition.
:type exposure: dict
"""
# Note(IS): Do not change the text of edit button for now until we
# have better behaviour.
classification = self.get_classification(exposure_combo_box)
if self.mode == CHOOSE_MODE:
# Change mode
self.mode = EDIT_MODE
# Set active exposure
self.active_exposure = exposure
# Disable all edit button
for exposure_edit_button in self.exposure_edit_buttons:
exposure_edit_button.setEnabled(False)
# Except one that was clicked
# edit_button.setEnabled(True)
# Disable all combo box
for exposure_combo_box in self.exposure_combo_boxes:
exposure_combo_box.setEnabled(False)
# Change the edit button to cancel
# edit_button.setText(tr('Cancel'))
# Clear right panel
clear_layout(self.right_layout)
# Show edit threshold or value mapping
if self.layer_mode == layer_mode_continuous:
self.setup_thresholds_panel(classification)
else:
self.setup_value_mapping_panels(classification)
self.add_buttons(classification)
elif self.mode == EDIT_MODE:
# Behave the same as cancel button clicked.
self.cancel_button_clicked()
self.parent.pbnNext.setEnabled(self.is_ready_to_next_step())
def show_current_state(self):
"""Setup the UI for QTextEdit to show the current state."""
right_panel_heading = QLabel(tr('Status'))
right_panel_heading.setFont(big_font)
right_panel_heading.setSizePolicy(
QSizePolicy.Maximum, QSizePolicy.Maximum)
self.right_layout.addWidget(right_panel_heading)
message = m.Message()
if self.layer_mode == layer_mode_continuous:
title = tr('Thresholds')
else:
title = tr('Value maps')
message.add(m.Heading(title, **INFO_STYLE))
for i in range(len(self.exposures)):
message.add(m.Text(self.exposure_labels[i]))
classification = self.get_classification(
self.exposure_combo_boxes[i])
if self.layer_mode == layer_mode_continuous:
thresholds = self.thresholds.get(self.exposures[i]['key'])
if not thresholds or not classification:
message.add(m.Paragraph(tr('No classifications set.')))
continue
table = m.Table(
style_class='table table-condensed table-striped')
header = m.Row()
header.add(m.Cell(tr('Class name')))
header.add(m.Cell(tr('Minimum')))
header.add(m.Cell(tr('Maximum')))
table.add(header)
classes = classification.get('classes')
# Sort by value, put the lowest first
classes = sorted(classes, key=lambda k: k['value'])
for the_class in classes:
threshold = thresholds[classification['key']]['classes'][
the_class['key']]
row = m.Row()
row.add(m.Cell(the_class['name']))
row.add(m.Cell(threshold[0]))
row.add(m.Cell(threshold[1]))
table.add(row)
else:
value_maps = self.value_maps.get(self.exposures[i]['key'])
if not value_maps or not classification:
message.add(m.Paragraph(tr('No classifications set.')))
continue
table = m.Table(
style_class='table table-condensed table-striped')
header = m.Row()
header.add(m.Cell(tr('Class name')))
header.add(m.Cell(tr('Value')))
table.add(header)
classes = classification.get('classes')
# Sort by value, put the lowest first
classes = sorted(classes, key=lambda k: k['value'])
for the_class in classes:
value_map = value_maps[classification['key']][
'classes'].get(the_class['key'], [])
row = m.Row()
row.add(m.Cell(the_class['name']))
row.add(m.Cell(', '.join([str(v) for v in value_map])))
table.add(row)
message.add(table)
# status_text_edit = QTextBrowser(None)
status_text_edit = QWebView(None)
status_text_edit.setSizePolicy(
QSizePolicy.Ignored,
QSizePolicy.Ignored)
status_text_edit.page().mainFrame().setScrollBarPolicy(
Qt.Horizontal,
Qt.ScrollBarAlwaysOff)
html_string = html_header() + message.to_html() + html_footer()
status_text_edit.setHtml(html_string)
self.right_layout.addWidget(status_text_edit)
def set_widgets(self):
"""Set widgets on the Multi classification step."""
self.clear()
self.layer_mode = self.parent.step_kw_layermode.selected_layermode()
self.layer_purpose = self.parent.step_kw_purpose.selected_purpose()
self.set_current_state()
# Set the step description
self.set_wizard_step_description()
# Set the left panel
self.setup_left_panel()
# Set the right panel, for the beginning show the viewer
self.show_current_state()
def clear(self):
"""Clear current state."""
self.exposures = []
self.exposure_labels = []
self.exposure_combo_boxes = []
self.exposure_edit_buttons = []
self.mode = CHOOSE_MODE
self.layer_purpose = None
self.layer_mode = None
self.special_case_index = None
self.value_maps = {}
self.thresholds = {}
# Temporary attributes
self.threshold_classes = OrderedDict()
self.active_exposure = None
self.list_unique_values = None
self.tree_mapping_widget = None
clear_layout(self.left_layout)
clear_layout(self.right_layout)
def get_current_state(self):
"""Obtain current classification and value map / threshold."""
def clean_state(dictionary):
"""Clean dictionary from bad value.
:param dictionary: Dictionary of value maps or thresholds.
:type dictionary: dict
:returns: Clean state.
:rtype: dict
"""
clean_dictionary = {
k: v for k, v in dictionary.items()
if isinstance(v, dict)}
return clean_dictionary
if self.layer_mode == layer_mode_continuous:
output = {'thresholds': clean_state(self.thresholds)}
key = 'thresholds'
else:
output = {'value_maps': clean_state(self.value_maps)}
key = 'value_maps'
# Clean non existing hazard class key
empty_exposure_classifications = []
for the_exposure, the_hazard_classifications in output[key].items():
for the_hazard_classification in the_hazard_classifications.\
keys():
invalid_classifications = []
if not definition(the_hazard_classification):
invalid_classifications.append(
the_hazard_classification)
for invalid_classification in invalid_classifications:
the_hazard_classifications.pop(invalid_classification)
if not the_hazard_classifications:
empty_exposure_classifications.append(the_exposure)
for empty_exposure_classification in empty_exposure_classifications:
output[key].pop(empty_exposure_classification)
return output
@staticmethod
def get_classification(combo_box):
"""Helper to obtain the classification from a combo box.
:param combo_box: A classification combo box.
:type combo_box: QComboBox.
:returns: Classification definitions.
:rtype: dict
"""
return combo_box.itemData(combo_box.currentIndex(), Qt.UserRole)
def setup_thresholds_panel(self, classification):
"""Setup threshold panel in the right panel.
:param classification: Classification definition.
:type classification: dict
"""
# Set text in the label
layer_purpose = self.parent.step_kw_purpose.selected_purpose()
layer_subcategory = self.parent.step_kw_subcategory.\
selected_subcategory()
if is_raster_layer(self.parent.layer):
statistics = self.parent.layer.dataProvider().bandStatistics(
1, QgsRasterBandStats.All, self.parent.layer.extent(), 0)
description_text = continuous_raster_question % (
layer_purpose['name'],
layer_subcategory['name'],
classification['name'],
statistics.minimumValue,
statistics.maximumValue)
else:
field_name = self.parent.step_kw_field.selected_fields()
field_index = self.parent.layer.fieldNameIndex(field_name)
min_value_layer = self.parent.layer.minimumValue(field_index)
max_value_layer = self.parent.layer.maximumValue(field_index)
description_text = continuous_vector_question % (
layer_purpose['name'],
layer_subcategory['name'],
field_name,
classification['name'],
min_value_layer,
max_value_layer)
# Set description
description_label = QLabel(description_text)
description_label.setWordWrap(True)
self.right_layout.addWidget(description_label)
if self.thresholds:
thresholds = self.thresholds
else:
thresholds = self.parent.get_existing_keyword('thresholds')
selected_unit = self.parent.step_kw_unit.selected_unit()['key']
self.threshold_classes = OrderedDict()
classes = classification.get('classes')
# Sort by value, put the lowest first
classes = sorted(classes, key=lambda the_key: the_key['value'])
grid_layout_thresholds = QGridLayout()
for i, the_class in enumerate(classes):
class_layout = QHBoxLayout()
# Class label
class_label = QLabel(the_class['name'])
# Min label
min_label = QLabel(tr('Min >'))
# Min value as double spin
min_value_input = QDoubleSpinBox()
# TODO(IS) We can set the min and max depends on the unit, later
min_value_input.setMinimum(0)
min_value_input.setMaximum(999999)
if thresholds.get(self.active_exposure['key']):
exposure_thresholds = thresholds.get(
self.active_exposure['key'])
if exposure_thresholds.get(classification['key']):
exposure_thresholds_classifications = exposure_thresholds\
.get(classification['key'])
min_value_input.setValue(
exposure_thresholds_classifications['classes'][
the_class['key']][0])
else:
default_min = the_class['numeric_default_min']
if isinstance(default_min, dict):
default_min = the_class[
'numeric_default_min'][selected_unit]
min_value_input.setValue(default_min)
else:
default_min = the_class['numeric_default_min']
if isinstance(default_min, dict):
default_min = the_class[
'numeric_default_min'][selected_unit]
min_value_input.setValue(default_min)
min_value_input.setSingleStep(0.1)
# Max label
max_label = QLabel(tr('Max <='))
# Max value as double spin
max_value_input = QDoubleSpinBox()
# TODO(IS) We can set the min and max depends on the unit, later
max_value_input.setMinimum(0)
max_value_input.setMaximum(999999)
if thresholds.get(self.active_exposure['key']):
exposure_thresholds = thresholds.get(
self.active_exposure['key'])
if exposure_thresholds.get(classification['key']):
exposure_thresholds_classifications = exposure_thresholds \
.get(classification['key'])
max_value_input.setValue(
exposure_thresholds_classifications['classes'][
the_class['key']][1])
else:
default_max = the_class['numeric_default_max']
if isinstance(default_max, dict):
default_max = the_class[
'numeric_default_max'][selected_unit]
max_value_input.setValue(default_max)
else:
default_max = the_class['numeric_default_max']
if isinstance(default_max, dict):
default_max = the_class[
'numeric_default_max'][selected_unit]
max_value_input.setValue(default_max)
max_value_input.setSingleStep(0.1)
# Add to class_layout
class_layout.addWidget(min_label)
class_layout.addWidget(min_value_input)
class_layout.addWidget(max_label)
class_layout.addWidget(max_value_input)
class_layout.setStretch(0, 1)
class_layout.setStretch(1, 2)
class_layout.setStretch(2, 1)
class_layout.setStretch(3, 2)
# Add to grid_layout
grid_layout_thresholds.addWidget(class_label, i, 0)
grid_layout_thresholds.addLayout(class_layout, i, 1)
self.threshold_classes[the_class['key']] = [
min_value_input, max_value_input]
grid_layout_thresholds.setColumnStretch(0, 1)
grid_layout_thresholds.setColumnStretch(0, 2)
def min_max_changed(double_spin_index, mode):
"""Slot when min or max value change.
:param double_spin_index: The index of the double spin.
:type double_spin_index: int
:param mode: The flag to indicate the min or max value.
:type mode: int
"""
if mode == MAX_VALUE_MODE:
current_max_value = self.threshold_classes.values()[
double_spin_index][1]
target_min_value = self.threshold_classes.values()[
double_spin_index + 1][0]
if current_max_value.value() != target_min_value.value():
target_min_value.setValue(current_max_value.value())
elif mode == MIN_VALUE_MODE:
current_min_value = self.threshold_classes.values()[
double_spin_index][0]
target_max_value = self.threshold_classes.values()[
double_spin_index - 1][1]
if current_min_value.value() != target_max_value.value():
target_max_value.setValue(current_min_value.value())
# Set behaviour
for k, v in self.threshold_classes.items():
index = self.threshold_classes.keys().index(k)
if index < len(self.threshold_classes) - 1:
# Max value changed
v[1].valueChanged.connect(partial(
min_max_changed,
double_spin_index=index,
mode=MAX_VALUE_MODE))
if index > 0:
# Min value
v[0].valueChanged.connect(partial(
min_max_changed,
double_spin_index=index,
mode=MIN_VALUE_MODE))
grid_layout_thresholds.setSpacing(0)
self.right_layout.addLayout(grid_layout_thresholds)
def add_buttons(self, classification):
"""Helper to setup 3 buttons.
:param classification: The current classification.
:type classification: dict
"""
# Note(IS): Until we have good behaviour, we will disable load
# default and cancel button.
# Add 3 buttons: Load default, Cancel, Save
# load_default_button = QPushButton(tr('Load Default'))
# cancel_button = QPushButton(tr('Cancel'))
self.save_button = QPushButton(tr('Save'))
# Action for buttons
# cancel_button.clicked.connect(self.cancel_button_clicked)
self.save_button.clicked.connect(
partial(self.save_button_clicked, classification=classification))
button_layout = QHBoxLayout()
# button_layout.addWidget(load_default_button)
button_layout.addStretch(1)
# button_layout.addWidget(cancel_button)
button_layout.addWidget(self.save_button)
button_layout.setStretch(0, 3)
button_layout.setStretch(1, 1)
# button_layout.setStretch(2, 1)
# button_layout.setStretch(3, 1)
self.right_layout.addLayout(button_layout)
def setup_value_mapping_panels(self, classification):
"""Setup value mapping panel in the right panel.
:param classification: Classification definition.
:type classification: dict
"""
# Set text in the label
layer_purpose = self.parent.step_kw_purpose.selected_purpose()
layer_subcategory = self.parent.step_kw_subcategory. \
selected_subcategory()
if is_raster_layer(self.parent.layer):
description_text = classify_raster_question % (
layer_subcategory['name'],
layer_purpose['name'],
classification['name'])
dataset = gdal.Open(self.parent.layer.source(), GA_ReadOnly)
active_band = self.parent.step_kw_band_selector.selected_band()
unique_values = numpy.unique(numpy.array(
dataset.GetRasterBand(active_band).ReadAsArray()))
field_type = 0
# Convert datatype to a json serializable type
if numpy.issubdtype(unique_values.dtype, float):
unique_values = [float(i) for i in unique_values]
else:
unique_values = [int(i) for i in unique_values]
else:
field = self.parent.step_kw_field.selected_fields()
field_index = self.parent.layer.dataProvider().fields(). \
indexFromName(field)
field_type = self.parent.layer.dataProvider(). \
fields()[field_index].type()
description_text = classify_vector_question % (
layer_subcategory['name'],
layer_purpose['name'],
classification['name'],
field.upper())
unique_values = self.parent.layer.uniqueValues(field_index)
# Set description
description_label = QLabel(description_text)
description_label.setWordWrap(True)
self.right_layout.addWidget(description_label)
self.list_unique_values = QListWidget()
self.list_unique_values.setDragDropMode(QAbstractItemView.DragDrop)
self.list_unique_values.setDefaultDropAction(Qt.MoveAction)
self.tree_mapping_widget = QTreeWidget()
self.tree_mapping_widget.setDragDropMode(QAbstractItemView.DragDrop)
self.tree_mapping_widget.setDefaultDropAction(Qt.MoveAction)
self.tree_mapping_widget.header().hide()
self.tree_mapping_widget.itemChanged.connect(
self.update_dragged_item_flags)
value_mapping_layout = QHBoxLayout()
value_mapping_layout.addWidget(self.list_unique_values)
value_mapping_layout.addWidget(self.tree_mapping_widget)
self.right_layout.addLayout(value_mapping_layout)
default_classes = classification['classes']
# Assign unique values to classes (according to default)
unassigned_values = list()
assigned_values = dict()
for default_class in default_classes:
assigned_values[default_class['key']] = list()
for unique_value in unique_values:
if unique_value is None or isinstance(
unique_value, QPyNullVariant):
# Don't classify features with NULL value
continue
# Capitalization of the value and removing '_' (raw OSM data).
value_as_string = unicode(unique_value).upper().replace('_', ' ')
assigned = False
for default_class in default_classes:
if 'string_defaults' in default_class:
condition_1 = (
field_type > 9 and
value_as_string in [
c.upper() for c in
default_class['string_defaults']])
else:
condition_1 = False
condition_2 = (
field_type < 10 and
'numeric_default_min' in default_class and
'numeric_default_max' in default_class and (
default_class['numeric_default_min'] <= unique_value <
default_class['numeric_default_max']))
if condition_1 or condition_2:
assigned_values[default_class['key']] += [unique_value]
assigned = True
if not assigned:
# add to unassigned values list otherwise
unassigned_values += [unique_value]
self.populate_classified_values(
unassigned_values,
assigned_values,
default_classes,
self.list_unique_values,
self.tree_mapping_widget
)
# Current value map for exposure and classification
available_classifications = self.value_maps.get(
self.active_exposure['key'])
if not available_classifications:
return
# Get active one
current_classification = available_classifications.get(
classification['key'])
if not current_classification:
return
current_value_map = current_classification.get('classes')
if not current_value_map:
return
unassigned_values = list()
assigned_values = dict()
for default_class in default_classes:
assigned_values[default_class['key']] = list()
for unique_value in unique_values:
if unique_value is None or isinstance(
unique_value, QPyNullVariant):
# Don't classify features with NULL value
continue
# check in value map
assigned = False
for key, value_list in current_value_map.items():
if unique_value in value_list and key in assigned_values:
assigned_values[key] += [unique_value]
assigned = True
if not assigned:
unassigned_values += [unique_value]
self.populate_classified_values(
unassigned_values,
assigned_values,
default_classes,
self.list_unique_values,
self.tree_mapping_widget
)
# noinspection PyMethodMayBeStatic
def update_dragged_item_flags(self, item):
"""Fix the drop flag after the item is dropped.
Check if it looks like an item dragged from QListWidget
to QTreeWidget and disable the drop flag.
For some reasons the flag is set when dragging.
:param item: Item which is dragged.
:type item: QTreeWidgetItem
.. note:: This is a slot executed when the item change.
"""
if int(item.flags() & Qt.ItemIsDropEnabled) \
and int(item.flags() & Qt.ItemIsDragEnabled):
item.setFlags(item.flags() & ~Qt.ItemIsDropEnabled)
@staticmethod
def populate_classified_values(
unassigned_values, assigned_values, default_classes,
list_unique_values, tree_mapping_widget):
"""Populate lstUniqueValues and treeClasses.from the parameters.
:param unassigned_values: List of values that haven't been assigned
to a class. It will be put in list_unique_values.
:type unassigned_values: list
:param assigned_values: Dictionary with class as the key and list of
value as the value of the dictionary. It will be put in
tree_mapping_widget.
:type assigned_values: dict
:param default_classes: Default classes from unit.
:type default_classes: list
:param list_unique_values: List Widget for unique values
:type list_unique_values: QListWidget
:param tree_mapping_widget: Tree Widget for classifying.
:type tree_mapping_widget: QTreeWidget
"""
# Populate the unique values list
list_unique_values.clear()
list_unique_values.setSelectionMode(
QAbstractItemView.ExtendedSelection)
for value in unassigned_values:
value_as_string = value is not None and unicode(value) or 'NULL'
list_item = QListWidgetItem(list_unique_values)
list_item.setFlags(
Qt.ItemIsEnabled |
Qt.ItemIsSelectable |
Qt.ItemIsDragEnabled)
list_item.setData(Qt.UserRole, value)
list_item.setText(value_as_string)
list_unique_values.addItem(list_item)
# Populate assigned values tree
tree_mapping_widget.clear()
bold_font = QFont()
bold_font.setItalic(True)
bold_font.setBold(True)
bold_font.setWeight(75)
tree_mapping_widget.invisibleRootItem().setFlags(
Qt.ItemIsEnabled)
for default_class in default_classes:
# Create branch for class
tree_branch = QTreeWidgetItem(tree_mapping_widget)
tree_branch.setFlags(
Qt.ItemIsDropEnabled | Qt.ItemIsEnabled)
tree_branch.setExpanded(True)
tree_branch.setFont(0, bold_font)
if 'name' in default_class:
default_class_name = default_class['name']
else:
default_class_name = default_class['key']
tree_branch.setText(0, default_class_name)
tree_branch.setData(0, Qt.UserRole, default_class['key'])
if 'description' in default_class:
tree_branch.setToolTip(0, default_class['description'])
# Assign known values
for value in assigned_values[default_class['key']]:
string_value = value is not None and unicode(value) or 'NULL'
tree_leaf = QTreeWidgetItem(tree_branch)
tree_leaf.setFlags(
Qt.ItemIsEnabled |
Qt.ItemIsSelectable |
Qt.ItemIsDragEnabled)
tree_leaf.setData(0, Qt.UserRole, value)
tree_leaf.setText(0, string_value)
def cancel_button_clicked(self):
"""Action for cancel button clicked."""
# Change mode
self.mode = CHOOSE_MODE
# Enable all edit buttons and combo boxes
for i in range(len(self.exposures)):
if i == self.special_case_index:
self.exposure_edit_buttons[i].setEnabled(False)
self.exposure_combo_boxes[i].setEnabled(False)
continue
if self.get_classification(self.exposure_combo_boxes[i]):
self.exposure_edit_buttons[i].setEnabled(True)
else:
self.exposure_edit_buttons[i].setEnabled(False)
# self.exposure_edit_buttons[i].setText(tr('Edit'))
self.exposure_combo_boxes[i].setEnabled(True)
# Clear right panel
clear_layout(self.right_layout)
# Show current state
self.show_current_state()
# Unset active exposure
self.active_exposure = None
self.parent.pbnNext.setEnabled(self.is_ready_to_next_step())
def save_button_clicked(self, classification):
"""Action for save button clicked.
:param classification: The classification that being edited.
:type classification: dict
"""
# Save current edit
if self.layer_mode == layer_mode_continuous:
thresholds = self.get_threshold()
classification_class = {
'classes': thresholds,
'active': True
}
if self.thresholds.get(self.active_exposure['key']):
# Set other class to not active
for current_classification in self.thresholds.get(
self.active_exposure['key']).values():
current_classification['active'] = False
else:
self.thresholds[self.active_exposure['key']] = {}
self.thresholds[self.active_exposure['key']][
classification['key']] = classification_class
else:
value_maps = self.get_value_map()
classification_class = {
'classes': value_maps,
'active': True
}
if self.value_maps.get(self.active_exposure['key']):
# Set other class to not active
for current_classification in self.value_maps.get(
self.active_exposure['key']).values():
current_classification['active'] = False
else:
self.value_maps[self.active_exposure['key']] = {}
self.value_maps[self.active_exposure['key']][
classification['key']] = classification_class
# Back to choose mode
self.cancel_button_clicked()
def get_threshold(self):
"""Return threshold based on current state."""
value_map = dict()
for key, value in self.threshold_classes.items():
value_map[key] = [
value[0].value(),
value[1].value(),
]
return value_map
def get_value_map(self):
"""Obtain the value-to-class mapping set by user.
:returns: The complete mapping as a dict of lists.
:rtype: dict
"""
value_map = {}
tree_clone = self.tree_mapping_widget.invisibleRootItem().clone()
for tree_branch in tree_clone.takeChildren():
value_list = []
for tree_leaf in tree_branch.takeChildren():
value_list += [tree_leaf.data(0, Qt.UserRole)]
if value_list:
value_map[tree_branch.data(0, Qt.UserRole)] = value_list
return value_map
def set_current_state(self):
""""Helper to set the state of the step from current keywords."""
if not self.thresholds:
self.thresholds = self.parent.get_existing_keyword('thresholds')
if not self.value_maps:
self.value_maps = self.parent.get_existing_keyword('value_maps')
def classifications_combo_box_changed(
self, index, exposure, exposure_combo_box, edit_button):
"""Action when classification combo box changed.
:param index: The index of the combo box.
:type index: int
:param exposure: The exposure associated with the combo box.
:type exposure: dict
:param exposure_combo_box: Combo box for the classification.
:type exposure_combo_box: QComboBox
:param edit_button: The edit button associate with combo box.
:type edit_button: QPushButton
"""
# Disable button if it's no classification
edit_button.setEnabled(bool(index))
classification = self.get_classification(exposure_combo_box)
self.activate_classification(exposure, classification)
clear_layout(self.right_layout)
self.show_current_state()
self.parent.pbnNext.setEnabled(self.is_ready_to_next_step())
# Open edit panel directly
edit_button.click()
def activate_classification(self, exposure, classification=None):
"""Set active to True for classification for the exposure.
If classification = None, all classification set active = False.
:param exposure: Exposure definition.
:type exposure: dict
:param classification: Classification definition.
:type classification: dict
"""
if self.layer_mode == layer_mode_continuous:
selected_unit = self.parent.step_kw_unit.selected_unit()['key']
target = self.thresholds.get(exposure['key'])
if target is None:
self.thresholds[exposure['key']] = {}
target = self.thresholds.get(exposure['key'])
else:
selected_unit = None
target = self.value_maps.get(exposure['key'])
if target is None:
self.value_maps[exposure['key']] = {}
target = self.value_maps.get(exposure['key'])
if classification is not None:
if classification['key'] not in target:
if self.layer_mode == layer_mode_continuous:
default_classes = default_classification_thresholds(
classification, selected_unit)
target[classification['key']] = {
'classes': default_classes,
'active': True
}
else:
default_classes = default_classification_value_maps(
classification)
target[classification['key']] = {
'classes': default_classes,
'active': True
}
return
for classification_key, value in target.items():
if classification is None:
value['active'] = False
continue
if classification_key == classification['key']:
value['active'] = True
else:
value['active'] = False
@property
def step_name(self):
"""Get the human friendly name for the wizard step.
:returns: The name of the wizard step.
:rtype: str
"""
return tr('Multi Classification Step')
def help_content(self):
"""Return the content of help for this step wizard.
We only needs to re-implement this method in each wizard step.
:returns: A message object contains help.
:rtype: m.Message
"""
message = m.Message()
message.add(m.Paragraph(tr(
'In this wizard step: {step_name}, you will be able to set the '
'classification that you will use per exposure type. You can also '
'set the threshold or value map for each classification.'
).format(step_name=self.step_name)))
return message