def make_pdf():
canvas = QgsMapCanvas()
# Load our project
QgsProject.instance().read(QFileInfo(project_path))
bridge = QgsLayerTreeMapCanvasBridge(QgsProject.instance().layerTreeRoot(),
canvas)
bridge.setCanvasLayers()
template_file = file(template_path)
template_content = template_file.read()
template_file.close()
document = QDomDocument()
document.setContent(template_content)
composition = QgsComposition(canvas.mapSettings())
# You can use this to replace any string like this [key]
# in the template with a new value. e.g. to replace
# [date] pass a map like this {'date': '1 Jan 2012'}
substitution_map = {'DATE_TIME_START': 'foo', 'DATE_TIME_END': 'bar'}
composition.loadFromTemplate(document, substitution_map)
# You must set the id in the template
map_item = composition.getComposerItemById('map')
map_item.setMapCanvas(canvas)
map_item.zoomToExtent(canvas.extent())
# You must set the id in the template
legend_item = composition.getComposerItemById('legend')
legend_item.updateLegend()
composition.refreshItems()
composition.exportAsPDF('report.pdf')
QgsProject.instance().clear()
def make_pdf():
canvas = QgsMapCanvas()
# Load our project
QgsProject.instance().read(QFileInfo(project_path))
bridge = QgsLayerTreeMapCanvasBridge(
QgsProject.instance().layerTreeRoot(), canvas)
bridge.setCanvasLayers()
if canvas.layerCount() < 1:
print 'No layers loaded from this project, exiting.'
return
print canvas.mapSettings().extent().toString()
template_file = file(template_path)
template_content = template_file.read()
template_file.close()
document = QDomDocument()
document.setContent(template_content)
composition = QgsComposition(canvas.mapSettings())
# You can use this to replace any string like this [key]
# in the template with a new value. e.g. to replace
# [date] pass a map like this {'date': '1 Jan 2012'}
substitution_map = {
'DATE_TIME_START': TIME_START,
'DATE_TIME_END': TIME_STOP}
composition.loadFromTemplate(document, substitution_map)
# You must set the id in the template
map_item = composition.getComposerItemById('map')
map_item.setMapCanvas(canvas)
map_item.zoomToExtent(canvas.extent())
# You must set the id in the template
legend_item = composition.getComposerItemById('legend')
legend_item.updateLegend()
composition.refreshItems()
composition.exportAsPDF(
'/home/web/reports/pdf/%s/%s.pdf' % (TIME_SLICE, LABEL))
QgsProject.instance().clear()
def make_pdf(xmin, ymin, xmax, ymax, filter_expression):
canvas = QgsMapCanvas()
# Load our project
QgsProject.instance().read(QFileInfo(project_path))
# Set canvas extent
canvas.setExtent(QgsRectangle(xmin, ymin, xmax, ymax))
# Load layers here if they are not already in the project
for layer in QgsMapLayerRegistry.instance().mapLayers().values():
if layer.name() == 'data':
lyr = layer
break
lyr.setSubsetString(filter_expression)
# bridge used in standalone script: http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/loadproject.html
bridge = QgsLayerTreeMapCanvasBridge(QgsProject.instance().layerTreeRoot(),
canvas)
bridge.setCanvasLayers()
# Check data providers load ok
print('Provider List')
print(QgsProviderRegistry.instance().providerList())
# Print layer validity - I've had some trouble with some wms layers
for layer in QgsMapLayerRegistry.instance().mapLayers().values():
print(layer.name())
print(layer.isValid())
template_file = file(template_path)
template_content = template_file.read()
template_file.close()
document = QDomDocument()
document.setContent(template_content)
composition = QgsComposition(canvas.mapSettings())
# You can use this to replace any string like this [key]
# in the template with a new value. e.g. to replace
# [date] pass a map like this {'date': '1 Jan 2012'}
substitution_map = {'title': 'the title of my map'}
composition.loadFromTemplate(document, substitution_map)
# You must set the id in the template
map_item = composition.getComposerItemById('Main Map')
map_item.setMapCanvas(canvas)
map_item.zoomToExtent(canvas.extent())
# You must set the id in the template
legend_item = composition.getComposerItemById('Legend')
legend_item.updateLegend()
composition.refreshItems()
composition.exportAsPDF('export.pdf')
QgsProject.instance().clear()
def export_pdf(self, title=''):
'''
Export Composition (map view and checked layers) to PDF
'''
title = self.active_scenario.name if self.active_scenario else ''
dialog = ExportPDFDialog(title=title, parent=self)
result = dialog.exec_()
ok = result == QtGui.QDialog.Accepted
if not ok:
return
title = dialog.title
date = dialog.date
filepath = browse_file(None, 'Export', PDF_FILTER, save=True,
parent=self)
if not filepath:
return
bridge = QgsLayerTreeMapCanvasBridge(
QgsProject.instance().layerTreeRoot(), self.canvas)
bridge.setCanvasLayers()
template_file = file(REPORT_TEMPLATE_PATH)
template_content = template_file.read()
template_file.close()
document = QDomDocument()
document.setContent(template_content)
composition = QgsComposition(self.canvas.mapSettings())
# You can use this to replace any string like this [key]
# in the template with a new value. e.g. to replace
# [date] pass a map like this {'date': '1 Jan 2012'}
substitution_map = {
'TITLE': title,
'DATE_TIME': date}
composition.loadFromTemplate(document, substitution_map)
# You must set the id in the template
map_item = composition.getComposerItemById('map')
map_item.setMapCanvas(self.canvas)
map_item.zoomToExtent(self.canvas.extent())
# You must set the id in the template
legend_item = composition.getComposerItemById('legend')
legend_item.updateLegend()
composition.refreshItems()
composition.exportAsPDF(filepath)
if sys.platform.startswith('darwin'):
subprocess.call(('open', filepath))
elif os.name == 'nt':
os.startfile(filepath)
elif os.name == 'posix':
subprocess.call(('xdg-open', filepath))
def from_file(cls, filename, canvas, relative_base=None):
"""
Load a project file from a path.
:param filename: The path to the project file.
:param canvas: (optional) Passing a canvas will auto add layers to the canvas when the load is
loaded.
:param relative_base_path: (optional) Relative base path for the project file to load layers from
:return: A Project object which wraps QgsProject.instance()
"""
QgsProject.instance().clear()
bridge = None
if canvas:
bridge = QgsLayerTreeMapCanvasBridge(QgsProject.instance().layerTreeRoot(), canvas)
if relative_base is None:
relative_base = os.path.dirname(filename)
QDir.setCurrent(relative_base)
QgsProject.instance().read(QFileInfo(filename))
if bridge:
bridge.setCanvasLayers()
return cls(bridge)
def export_map(layer, new_extent):
"""This function changes the map extents and creates a exported map image"""
legend = iface.legendInterface()
legend.setLayerVisible(layer, False)
canvas = iface.mapCanvas()
canvas.setExtent(new_extent)
canvas.refresh()
project_path = os.path.join(gis_files, 'air_tasking_order.qgs')
QgsProject.instance().write(QFileInfo(project_path)) #Save with the flight lines
QgsProject.instance().read(QFileInfo(project_path))
bridge = QgsLayerTreeMapCanvasBridge(
QgsProject.instance().layerTreeRoot(), canvas)
bridge.setCanvasLayers()
template_file = file(os.path.join(gis_files, 'airborne_survey.qpt'))
template_content = template_file.read()
template_file.close()
document = QDomDocument()
document.setContent(template_content)
ms = canvas.mapSettings()
composition = QgsComposition(ms)
composition.loadFromTemplate(document, {})
map_item = composition.getComposerItemById('the_map')
map_item.setMapCanvas(canvas)
map_item.zoomToExtent(canvas.extent())
map_text_box = '<font face="Arial">%s Tasking <br />%s - %s<br />%s' % (
Requesting_RFC, Survey_Start_Date, Survey_End_Date, Survey_Name)
map_text = composition.getComposerItemById('Map_ID_Text')
map_text.setText(map_text_box)
composition.refreshItems()
dpi = 300
dpmm = dpi / 24.4
width = int(dpmm * composition.paperWidth())
height = int(dpmm * composition.paperHeight())
image = QImage(QSize(width, height), QImage.Format_ARGB32)
image.setDotsPerMeterX(dpmm * 1000)
image.setDotsPerMeterY(dpmm * 1000)
imagePainter = QPainter(image)
composition.renderPage(imagePainter, 0)
imagePainter.end()
image.save(Survey_Name + '.png', 'png')
class QgisInterface(QObject):
"""Class to expose qgis objects and functions to plugins.
This class is here for enabling us to run unit tests only,
so most methods are simply stubs.
"""
currentLayerChanged = pyqtSignal(QgsMapCanvasLayer)
layerSavedAs = pyqtSignal(QgsMapLayer, str)
def __init__(self, canvas):
"""Constructor
:param canvas:
"""
QObject.__init__(self)
self.canvas = canvas
self.legend = QgisLegend(canvas)
self.message_bar = QgsMessageBar(None)
# Set up slots so we can mimic the behaviour of QGIS when layers
# are added.
LOGGER.debug('Initialising canvas...')
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().layersAdded.connect(self.addLayers)
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().layerWasAdded.connect(self.addLayer)
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().removeAll.connect(self.removeAllLayers)
# For processing module
self.destCrs = None
# For keeping track of which layer is active in the legend.
self.active_layer = None
# In the next section of code, we are going to do some monkey patching
# to make the QGIS processing framework think that this mock QGIS IFACE
# instance is the actual one. It will also ensure that the processing
# algorithms are nicely loaded and available for use.
# Since QGIS > 2.0, the module is moved from QGisLayers to dataobjects
# pylint: disable=F0401, E0611
if QGis.QGIS_VERSION_INT > 20001:
# noinspection PyUnresolvedReferences
from processing.tools import dataobjects
else:
# noinspection PyUnresolvedReferences
from processing.core import QGisLayers as dataobjects
# noinspection PyUnresolvedReferences
import processing
# noinspection PyUnresolvedReferences
from processing.core.Processing import Processing
# pylint: enable=F0401, E0611
processing.classFactory(self)
# We create our own getAlgorithm function below which will will monkey
# patch in to the Processing class in QGIS in order to ensure that the
# Processing.initialize() call is made before asking for an alg.
@staticmethod
def mock_getAlgorithm(name):
"""
Modified version of the original getAlgorithm function.
:param name: Name of the algorithm to load.
:type name: str
:return: An algorithm concrete class.
:rtype: QgsAlgorithm ?
"""
Processing.initialize()
for provider in Processing.algs.values():
if name in provider:
return provider[name]
return None
# Now we let the monkey loose!
Processing.getAlgorithm = mock_getAlgorithm
# We also need to make dataobjects think that this iface is 'the one'
# Note. the placement here (after the getAlgorithm monkey patch above)
# is significant, so don't move it!
dataobjects.iface = self
# set up a layer tree bridge so that new added layers appear in legend
self.layer_tree_root = QgsProject.instance().layerTreeRoot()
self.bridge = QgsLayerTreeMapCanvasBridge(self.layer_tree_root,
self.canvas)
self.bridge.setCanvasLayers()
def __getattr__(self, *args, **kwargs):
# It's for processing module
def dummy(*a, **kwa):
_ = a, kwa
return QgisInterface(self.canvas)
return dummy
def __iter__(self):
# It's for processing module
return self
def next(self):
# It's for processing module
raise StopIteration
def layers(self):
# It's for processing module
# simulate iface.legendInterface().layers()
return QgsMapLayerRegistry.instance().mapLayers().values()
@pyqtSlot('QStringList')
def addLayers(self, layers):
"""Handle layers being added to the registry so they show up in canvas.
:param layers: list<QgsMapLayer> list of map layers that were added
.. note:: The QgsInterface api does not include this method,
it is added here as a helper to facilitate testing.
"""
# LOGGER.debug('addLayers called on qgis_interface')
# LOGGER.debug('Number of layers being added: %s' % len(layers))
# LOGGER.debug('Layer Count Before: %s' % len(self.canvas.layers()))
current_layers = self.canvas.layers()
final_layers = []
# We need to keep the record of the registered layers on our canvas!
registered_layers = []
for layer in current_layers:
final_layers.append(QgsMapCanvasLayer(layer))
registered_layers.append(layer.id())
for layer in layers:
if layer.id() not in registered_layers:
final_layers.append(QgsMapCanvasLayer(layer))
self.canvas.setLayerSet(final_layers)
# LOGGER.debug('Layer Count After: %s' % len(self.canvas.layers()))
@pyqtSlot('QgsMapLayer')
def addLayer(self, layer):
"""Handle a layer being added to the registry so it shows up in canvas.
:param layer: list<QgsMapLayer> list of map layers that were added
.. note: The QgsInterface api does not include this method, it is added
here as a helper to facilitate testing.
.. note: The addLayer method was deprecated in QGIS 1.8 so you should
not need this method much.
"""
pass
@pyqtSlot()
def removeAllLayers(self, ):
"""Remove layers from the canvas before they get deleted.
.. note:: This is NOT part of the QGisInterface API but is needed
to support QgsMapLayerRegistry.removeAllLayers().
"""
self.canvas.setLayerSet([])
self.active_layer = None
def newProject(self):
"""Create new project."""
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().removeAllMapLayers()
# ---------------- API Mock for QgsInterface follows -------------------
def zoomFull(self):
"""Zoom to the map full extent."""
pass
def zoomToPrevious(self):
"""Zoom to previous view extent."""
pass
def zoomToNext(self):
"""Zoom to next view extent."""
pass
def zoomToActiveLayer(self):
"""Zoom to extent of active layer."""
pass
def addVectorLayer(self, path, base_name, provider_key):
"""Add a vector layer.
:param path: Path to layer.
:type path: str
:param base_name: Base name for layer.
:type base_name: str
:param provider_key: Provider key e.g. 'ogr'
:type provider_key: str
"""
pass
def addRasterLayer(self, path, base_name):
"""Add a raster layer given a raster layer file name
:param path: Path to layer.
:type path: str
:param base_name: Base name for layer.
:type base_name: str
"""
pass
def setActiveLayer(self, layer):
"""Set the currently active layer in the legend.
:param layer: Layer to make active.
:type layer: QgsMapLayer, QgsVectorLayer, QgsRasterLayer
"""
self.active_layer = layer
def activeLayer(self):
"""Get pointer to the active layer (layer selected in the legend)."""
if self.active_layer is not None:
return self.active_layer
else:
return None
def addToolBarIcon(self, action):
"""Add an icon to the plugins toolbar.
:param action: Action to add to the toolbar.
:type action: QAction
"""
pass
def removeToolBarIcon(self, action):
"""Remove an action (icon) from the plugin toolbar.
:param action: Action to add to the toolbar.
:type action: QAction
"""
pass
def addToolBar(self, name):
"""Add toolbar with specified name.
:param name: Name for the toolbar.
:type name: str
"""
pass
def mapCanvas(self):
"""Return a pointer to the map canvas."""
return self.canvas
def mainWindow(self):
"""Return a pointer to the main window.
In case of QGIS it returns an instance of QgisApp.
"""
pass
def addDockWidget(self, area, dock_widget):
"""Add a dock widget to the main window.
:param area: Where in the ui the dock should be placed.
:type area:
:param dock_widget: A dock widget to add to the UI.
:type dock_widget: QDockWidget
"""
pass
def legendInterface(self):
"""Get the legend.
See also discussion at:
https://github.com/AIFDR/inasafe/pull/924/
Implementation added for version 3.2.
"""
return self.legend
def messageBar(self):
"""Get the message bar.
.. versionadded:: 3.2
:returns: A QGIS message bar instance
:rtype: QgsMessageBar
"""
return self.message_bar
gui_flag = True
app = QgsApplication(sys.argv, True)
QgsApplication.setPrefixPath("/usr", True)
QgsApplication.initQgis()
project_path = 'report_maps.qgs'
template_path = 'owner_occupancy.qpt'
canvas = QgsMapCanvas()
canvas.resize(QSize(1450, 850))
#start = time.time()
QgsProject.instance().read(QFileInfo(project_path))
#end = time.time()
root = QgsProject.instance().layerTreeRoot()
bridge = QgsLayerTreeMapCanvasBridge(root, canvas)
bridge.setCanvasLayers()
registry = QgsMapLayerRegistry.instance()
template_file = file(template_path)
template_content = template_file.read()
template_file.close()
document = QDomDocument()
document.setContent(template_content)
map_settings = canvas.mapSettings()
composition = QgsComposition(map_settings)
#start = time.time()
composition.loadFromTemplate(document)
#end = time.time()
#create list of all layers currently in the map
map_layers = [lyr for lyr in registry.mapLayers() if root.findLayer(lyr)]
def print_atlas(self,
project_path,
composer_name,
predefined_scales,
feature_filter=None,
page_name_expression=None):
# Get composer from project
# in QGIS 2, canno get composers without iface
# so we reading project xml and extract composer
# in QGIS 3.0, we will use project layoutManager()
from xml.etree import ElementTree as ET
composer_xml = None
with open(project_path, 'r') as f:
tree = ET.parse(f)
for elem in tree.findall('.//Composer[@title="%s"]' %
composer_name):
composer_xml = ET.tostring(elem, encoding='utf8', method='xml')
if not composer_xml:
return
document = QDomDocument()
document.setContent(composer_xml)
# Get canvas, map setting & instantiate composition
canvas = QgsMapCanvas()
QgsProject.instance().read(QFileInfo(project_path))
bridge = QgsLayerTreeMapCanvasBridge(
QgsProject.instance().layerTreeRoot(), canvas)
bridge.setCanvasLayers()
ms = canvas.mapSettings()
composition = QgsComposition(ms)
# Load content from XML
substitution_map = {}
composition.loadFromTemplate(document, substitution_map)
# Get atlas for this composition
atlas = composition.atlasComposition()
atlas.setEnabled(True)
atlas_map = composition.getComposerMapById(0)
atlas_map.setAtlasScalingMode(QgsComposerMap.Predefined)
# get project scales
atlas.setPredefinedScales(predefined_scales)
atlas.setComposerMap(atlas_map)
#on definit le filtre
if feature_filter:
atlas.setFilterFeatures(True)
atlas.setFeatureFilter(feature_filter)
if page_name_expression:
atlas.setPageNameExpression(page_name_expression)
# Set atlas mode
composition.setAtlasMode(QgsComposition.ExportAtlas)
# Generate atlas
atlas.beginRender()
uid = uuid4()
for i in range(0, atlas.numFeatures()):
atlas.prepareForFeature(i)
export_path = os.path.join(
tempfile.gettempdir(),
'%s_%s.pdf' % (atlas.nameForPage(i), uid))
exported = composition.exportAsPDF(export_path)
if not exported or not os.path.isfile(export_path):
return None
break
atlas.endRender()
return export_path
class QgisInterface(QObject):
"""Class to expose qgis objects and functions to plugins.
This class is here for enabling us to run unit tests only,
so most methods are simply stubs.
"""
currentLayerChanged = pyqtSignal(QgsMapCanvasLayer)
layerSavedAs = pyqtSignal(QgsMapLayer, str)
def __init__(self, canvas):
"""Constructor
:param canvas:
"""
QObject.__init__(self)
self.canvas = canvas
self.legend = QgisLegend(canvas)
self.message_bar = QgsMessageBar(None)
# Set up slots so we can mimic the behaviour of QGIS when layers
# are added.
LOGGER.debug("Initialising canvas...")
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().layersAdded.connect(self.addLayers)
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().layerWasAdded.connect(self.addLayer)
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().removeAll.connect(self.removeAllLayers)
# For processing module
self.destCrs = None
# For keeping track of which layer is active in the legend.
self.active_layer = None
# In the next section of code, we are going to do some monkey patching
# to make the QGIS processing framework think that this mock QGIS IFACE
# instance is the actual one. It will also ensure that the processing
# algorithms are nicely loaded and available for use.
# Since QGIS > 2.0, the module is moved from QGisLayers to dataobjects
# pylint: disable=F0401, E0611
if QGis.QGIS_VERSION_INT > 20001:
# noinspection PyUnresolvedReferences
from processing.tools import dataobjects
else:
# noinspection PyUnresolvedReferences
from processing.core import QGisLayers as dataobjects
# noinspection PyUnresolvedReferences
import processing
# noinspection PyUnresolvedReferences
from processing.core.Processing import Processing
# pylint: enable=F0401, E0611
processing.classFactory(self)
# We create our own getAlgorithm function below which will will monkey
# patch in to the Processing class in QGIS in order to ensure that the
# Processing.initialize() call is made before asking for an alg.
@staticmethod
def mock_getAlgorithm(name):
"""
Modified version of the original getAlgorithm function.
:param name: Name of the algorithm to load.
:type name: str
:return: An algorithm concrete class.
:rtype: QgsAlgorithm ?
"""
Processing.initialize()
for provider in Processing.algs.values():
if name in provider:
return provider[name]
return None
# Now we let the monkey loose!
Processing.getAlgorithm = mock_getAlgorithm
# We also need to make dataobjects think that this iface is 'the one'
# Note. the placement here (after the getAlgorithm monkey patch above)
# is significant, so don't move it!
dataobjects.iface = self
# set up a layer tree bridge so that new added layers appear in legend
self.layer_tree_root = QgsProject.instance().layerTreeRoot()
self.bridge = QgsLayerTreeMapCanvasBridge(self.layer_tree_root, self.canvas)
self.bridge.setCanvasLayers()
def __getattr__(self, *args, **kwargs):
# It's for processing module
def dummy(*a, **kwa):
_ = a, kwa
return QgisInterface(self.canvas)
return dummy
def __iter__(self):
# It's for processing module
return self
def next(self):
# It's for processing module
raise StopIteration
def layers(self):
# It's for processing module
# simulate iface.legendInterface().layers()
return QgsMapLayerRegistry.instance().mapLayers().values()
@pyqtSlot("QStringList")
def addLayers(self, layers):
"""Handle layers being added to the registry so they show up in canvas.
:param layers: list<QgsMapLayer> list of map layers that were added
.. note:: The QgsInterface api does not include this method,
it is added here as a helper to facilitate testing.
"""
# LOGGER.debug('addLayers called on qgis_interface')
# LOGGER.debug('Number of layers being added: %s' % len(layers))
# LOGGER.debug('Layer Count Before: %s' % len(self.canvas.layers()))
current_layers = self.canvas.layers()
final_layers = []
# We need to keep the record of the registered layers on our canvas!
registered_layers = []
for layer in current_layers:
final_layers.append(QgsMapCanvasLayer(layer))
registered_layers.append(layer.id())
for layer in layers:
if layer.id() not in registered_layers:
final_layers.append(QgsMapCanvasLayer(layer))
self.canvas.setLayerSet(final_layers)
# LOGGER.debug('Layer Count After: %s' % len(self.canvas.layers()))
@pyqtSlot("QgsMapLayer")
def addLayer(self, layer):
"""Handle a layer being added to the registry so it shows up in canvas.
:param layer: list<QgsMapLayer> list of map layers that were added
.. note: The QgsInterface api does not include this method, it is added
here as a helper to facilitate testing.
.. note: The addLayer method was deprecated in QGIS 1.8 so you should
not need this method much.
"""
pass
@pyqtSlot()
def removeAllLayers(self,):
"""Remove layers from the canvas before they get deleted.
.. note:: This is NOT part of the QGisInterface API but is needed
to support QgsMapLayerRegistry.removeAllLayers().
"""
self.canvas.setLayerSet([])
self.active_layer = None
def newProject(self):
"""Create new project."""
# noinspection PyArgumentList
QgsMapLayerRegistry.instance().removeAllMapLayers()
# ---------------- API Mock for QgsInterface follows -------------------
def zoomFull(self):
"""Zoom to the map full extent."""
pass
def zoomToPrevious(self):
"""Zoom to previous view extent."""
pass
def zoomToNext(self):
"""Zoom to next view extent."""
pass
def zoomToActiveLayer(self):
"""Zoom to extent of active layer."""
pass
def addVectorLayer(self, path, base_name, provider_key):
"""Add a vector layer.
:param path: Path to layer.
:type path: str
:param base_name: Base name for layer.
:type base_name: str
:param provider_key: Provider key e.g. 'ogr'
:type provider_key: str
"""
pass
def addRasterLayer(self, path, base_name):
"""Add a raster layer given a raster layer file name
:param path: Path to layer.
:type path: str
:param base_name: Base name for layer.
:type base_name: str
"""
pass
def setActiveLayer(self, layer):
"""Set the currently active layer in the legend.
:param layer: Layer to make active.
:type layer: QgsMapLayer, QgsVectorLayer, QgsRasterLayer
"""
self.active_layer = layer
def activeLayer(self):
"""Get pointer to the active layer (layer selected in the legend)."""
if self.active_layer is not None:
return self.active_layer
else:
return None
def addToolBarIcon(self, action):
"""Add an icon to the plugins toolbar.
:param action: Action to add to the toolbar.
:type action: QAction
"""
pass
def removeToolBarIcon(self, action):
"""Remove an action (icon) from the plugin toolbar.
:param action: Action to add to the toolbar.
:type action: QAction
"""
pass
def addToolBar(self, name):
"""Add toolbar with specified name.
:param name: Name for the toolbar.
:type name: str
"""
pass
def mapCanvas(self):
"""Return a pointer to the map canvas."""
return self.canvas
def mainWindow(self):
"""Return a pointer to the main window.
In case of QGIS it returns an instance of QgisApp.
"""
pass
def addDockWidget(self, area, dock_widget):
"""Add a dock widget to the main window.
:param area: Where in the ui the dock should be placed.
:type area:
:param dock_widget: A dock widget to add to the UI.
:type dock_widget: QDockWidget
"""
pass
def legendInterface(self):
"""Get the legend.
See also discussion at:
https://github.com/AIFDR/inasafe/pull/924/
Implementation added for version 3.2.
"""
return self.legend
def messageBar(self):
"""Get the message bar.
.. versionadded:: 3.2
:returns: A QGIS message bar instance
:rtype: QgsMessageBar
"""
return self.message_bar
def print_atlas(project, layout_name, feature_filter, scales=None, scale=None):
"""Generate an atlas.
:param project: The project to render as atlas.
:type project: QgsProject
:param layout_name: Name of the layout.
:type layout_name: basestring
:param feature_filter: QGIS Expression to use to select the feature.
It can return many features, a multiple pages PDF will be returned.
:type feature_filter: basestring
:param scale: A scale to force in the atlas context. Default to None.
:type scale: int
:param scales: A list of predefined list of scales to force in the atlas context.
Default to None.
:type scales: list
:return: Path to the PDF.
:rtype: basestring
"""
canvas = QgsMapCanvas()
bridge = QgsLayerTreeMapCanvasBridge(project.layerTreeRoot(), canvas)
bridge.setCanvasLayers()
manager = project.layoutManager()
master_layout = manager.layoutByName(layout_name)
if not master_layout:
raise AtlasPrintException('Layout not found')
if master_layout.layoutType() != QgsMasterLayoutInterface.PrintLayout:
raise AtlasPrintException('The layout is not a print layout')
for l in manager.printLayouts():
if l.name() == layout_name:
layout = l
break
else:
raise AtlasPrintException('The layout is not found')
atlas = layout.atlas()
if not atlas.enabled():
raise AtlasPrintException('The layout is not enabled for an atlas')
settings = QgsLayoutExporter.PdfExportSettings()
if scale:
layout.referenceMap().setAtlasScalingMode(QgsLayoutItemMap.Fixed)
layout.referenceMap().setScale(scale)
if scales:
layout.referenceMap().setAtlasScalingMode(QgsLayoutItemMap.Predefined)
if Qgis.QGIS_VERSION_INT >= 30900:
settings.predefinedMapScales = scales
else:
layout.reportContext().setPredefinedScales(scales)
layer = atlas.coverageLayer()
feature_filter = optimize_expression(layer, feature_filter)
expression = QgsExpression(feature_filter)
if expression.hasParserError():
raise AtlasPrintException(
'Expression is invalid, parser error: {}'.format(
expression.parserErrorString()))
context = QgsExpressionContext()
context.appendScope(QgsExpressionContextUtils.globalScope())
context.appendScope(QgsExpressionContextUtils.projectScope(project))
context.appendScope(QgsExpressionContextUtils.layoutScope(layout))
context.appendScope(QgsExpressionContextUtils.atlasScope(atlas))
context.appendScope(QgsExpressionContextUtils.layerScope(layer))
expression.prepare(context)
if expression.hasEvalError():
raise AtlasPrintException(
'Expression is invalid, eval error: {}'.format(
expression.evalErrorString()))
atlas.setFilterFeatures(True)
atlas.setFilterExpression(feature_filter)
if not scales and layout.referenceMap().atlasScalingMode(
) == QgsLayoutItemMap.Predefined:
if Qgis.QGIS_VERSION_INT >= 30900:
use_project = project.useProjectScales()
map_scales = project.mapScales()
else:
map_scales = project_scales(project)
use_project = len(map_scales) == 0
if not use_project or len(map_scales) == 0:
QgsMessageLog.logMessage(
'Map scales not found in project, fetching predefined map scales in global config',
'atlasprint', Qgis.Info)
map_scales = global_scales()
if Qgis.QGIS_VERSION_INT >= 30900:
settings.predefinedMapScales = map_scales
else:
layout.reportContext().setPredefinedScales(map_scales)
export_path = os.path.join(tempfile.gettempdir(),
'{}_{}.pdf'.format(layout_name, uuid4()))
exporter = QgsLayoutExporter(layout)
result = exporter.exportToPdf(atlas, export_path, settings)
if result[0] != QgsLayoutExporter.Success and not os.path.isfile(
export_path):
raise Exception('export not generated {}'.format(export_path))
return export_path
def print_atlas(project_path, composer_name, predefined_scales, feature_filter, page_name_expression=None):
if not feature_filter:
QgsMessageLog.logMessage("atlasprint: NO feature_filter provided !", 'atlasprint', Qgis.Critical)
return None
# Get composer from project
# in QGIS 2, we can't get composers without iface
# so we reading project xml and extract composer
# TODO Since QGIS 3.0, we should be able to use project layoutManager()
# noinspection PyPep8Naming
from xml.etree import ElementTree as ET
composer_xml = None
with open(project_path, 'r') as f:
tree = ET.parse(f)
for elem in tree.findall('.//Composer[@title="%s"]' % composer_name):
composer_xml = ET.tostring(
elem,
encoding='utf8',
method='xml'
)
if not composer_xml:
for elem in tree.findall('.//Layout[@name="%s"]' % composer_name):
composer_xml = ET.tostring(
elem,
encoding='utf8',
method='xml'
)
if not composer_xml:
QgsMessageLog.logMessage("atlasprint: Composer XML not parsed !", 'atlasprint', Qgis.Critical)
return None
document = QDomDocument()
document.setContent(composer_xml)
# Get canvas, map setting & instantiate composition
canvas = QgsMapCanvas()
project = QgsProject()
project.read(project_path)
bridge = QgsLayerTreeMapCanvasBridge(
project.layerTreeRoot(),
canvas
)
bridge.setCanvasLayers()
layout = QgsPrintLayout(project)
# Load content from XML
layout.loadFromTemplate(
document,
QgsReadWriteContext(),
)
atlas = layout.atlas()
atlas.setEnabled(True)
atlas_map = layout.referenceMap()
atlas_map.setAtlasDriven(True)
atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Predefined)
layout.reportContext().setPredefinedScales(predefined_scales)
if page_name_expression:
atlas.setPageNameExpression(page_name_expression)
# Filter feature here to avoid QGIS looping through every feature when doing : composition.setAtlasMode(QgsComposition.ExportAtlas)
coverage_layer = atlas.coverageLayer()
# Filter by FID as QGIS cannot compile expressions with $id or other $ vars
# which leads to bad performance for big dataset
use_fid = None
if '$id' in feature_filter:
import re
ids = list(map(int, re.findall(r'\d+', feature_filter)))
if len(ids) > 0:
use_fid = ids[0]
if use_fid:
qReq = QgsFeatureRequest().setFilterFid(use_fid)
else:
qReq = QgsFeatureRequest().setFilterExpression(feature_filter)
# Change feature_filter in order to improve performance
pks = coverage_layer.dataProvider().pkAttributeIndexes()
if use_fid and len(pks) == 1:
pk = coverage_layer.dataProvider().fields()[pks[0]].name()
feature_filter = '"%s" IN (%s)' % (pk, use_fid)
QgsMessageLog.logMessage("atlasprint: feature_filter changed into: %s" % feature_filter, 'atlasprint', Qgis.Info)
qReq = QgsFeatureRequest().setFilterExpression(feature_filter)
atlas.setFilterFeatures(True)
atlas.setFilterExpression(feature_filter)
uid = uuid4()
i = 0 # We use a single page for now.
atlas.beginRender()
atlas.seekTo(i)
# setup settings
settings = QgsLayoutExporter.PdfExportSettings()
export_path = os.path.join(
tempfile.gettempdir(),
'%s_%s.pdf' % (atlas.nameForPage(i), uid)
)
exporter = QgsLayoutExporter(layout)
result = exporter.exportToPdf(export_path, settings)
atlas.endRender()
if result != QgsLayoutExporter.Success:
QgsMessageLog.logMessage("atlasprint: export not generated %s" % export_path, 'atlasprint', Qgis.Critical)
return None
if not os.path.isfile(export_path):
QgsMessageLog.logMessage("atlasprint: export not generated %s" % export_path, 'atlasprint', Qgis.Critical)
return None
QgsMessageLog.logMessage("atlasprint: path generated %s" % export_path, 'atlasprint', Qgis.Success)
return export_path
def print_atlas(self,
project_path,
composer_name,
predefined_scales,
feature_filter=None,
page_name_expression=None):
if not feature_filter:
QgsMessageLog.logMessage(
"atlasprint: NO feature_filter provided !")
return None
# Get composer from project
# in QGIS 2, canno get composers without iface
# so we reading project xml and extract composer
# in QGIS 3.0, we will use project layoutManager()
from xml.etree import ElementTree as ET
composer_xml = None
with open(project_path, 'r') as f:
tree = ET.parse(f)
for elem in tree.findall('.//Composer[@title="%s"]' %
composer_name):
composer_xml = ET.tostring(elem, encoding='utf8', method='xml')
if not composer_xml:
QgsMessageLog.logMessage("atlasprint: Composer XML not parsed !")
return None
document = QDomDocument()
document.setContent(composer_xml)
# Get canvas, map setting & instantiate composition
canvas = QgsMapCanvas()
QgsProject.instance().read(QFileInfo(project_path))
bridge = QgsLayerTreeMapCanvasBridge(
QgsProject.instance().layerTreeRoot(), canvas)
bridge.setCanvasLayers()
ms = canvas.mapSettings()
composition = QgsComposition(ms)
# Load content from XML
substitution_map = {}
composition.loadFromTemplate(document, substitution_map)
# Get atlas for this composition
atlas = composition.atlasComposition()
atlas.setEnabled(True)
atlas_map = composition.getComposerMapById(0)
atlas_map.setAtlasScalingMode(QgsComposerMap.Predefined)
# get project scales
atlas.setPredefinedScales(predefined_scales)
atlas_map.setAtlasDriven(True)
#atlas.setComposerMap(atlas_map)
if page_name_expression:
atlas.setPageNameExpression(page_name_expression)
# Filter feature here to avoid QGIS looping through every feature when doing : composition.setAtlasMode(QgsComposition.ExportAtlas)
coverageLayer = atlas.coverageLayer()
# Filter by FID as QGIS cannot compile expressions with $id or other $ vars
# which leads to bad perfs for big datasets
useFid = None
if '$id' in feature_filter:
import re
ids = map(int, re.findall(r'\d+', feature_filter))
if len(ids) > 0:
useFid = ids[0]
if useFid:
qReq = QgsFeatureRequest().setFilterFid(useFid)
else:
qReq = QgsFeatureRequest().setFilterExpression(feature_filter)
# Change feature_filter in order to improve perfs
pks = coverageLayer.dataProvider().pkAttributeIndexes()
if useFid and len(pks) == 1:
pk = coverageLayer.dataProvider().fields()[pks[0]].name()
feature_filter = '"%s" IN (%s)' % (pk, useFid)
QgsMessageLog.logMessage(
"atlasprint: feature_filter changed into: %s" % feature_filter)
qReq = QgsFeatureRequest().setFilterExpression(feature_filter)
atlas.setFilterFeatures(True)
atlas.setFeatureFilter(feature_filter)
uid = uuid4()
i = 0
# Set Atlas mode
composition.setAtlasMode(QgsComposition.ExportAtlas)
atlas.beginRender()
for feat in coverageLayer.getFeatures(qReq):
atlas.prepareForFeature(feat)
export_path = os.path.join(
tempfile.gettempdir(),
'%s_%s.pdf' % (atlas.nameForPage(i), uid))
exported = composition.exportAsPDF(export_path)
if not exported or not os.path.isfile(export_path):
QgsMessageLog.logMessage(
"atlasprint: An error occured while exporting the atlas !")
return None
break
atlas.endRender()
if os.path.isfile(export_path):
QgsMessageLog.logMessage("atlasprint: path generated %s" %
export_path)
return export_path
class see_map(QDialog):
#app2 = QgsApplication([], True)
#app2.initQgis()
def __init__(self, file_name):
super().__init__()
# Creación del Lienzo / Canvas
self.canvas = QgsMapCanvas(self)
self.setWindowTitle("Map of Track / Mapa del Recorrido")
self.canvas.setCanvasColor(Qt.white)
self.initGui()
if not file_name == None:
vlayer = QgsVectorLayer(file_name, "Track Converted", "ogr")
#vlayer.updateExtents()
self.project.instance().addMapLayer(vlayer)
vlayer.renderer().symbol().setWidth(2)
vlayer.renderer().symbol().setColor(QColor.fromRgb(250, 0, 0))
self.view.refreshLayerSymbology(vlayer.id())
uri = 'crs=EPSG:4326&dpiMode=7&format=image/jpeg&layers=IGNBaseTodo&styles=default&tileMatrixSet=EPSG:4326&url=http://www.ign.es/wmts/ign-base'
map_spain = QgsRasterLayer(uri, "Spain", "wms")
self.root.insertLayer(1, map_spain)
self.project.instance().addMapLayer(map_spain)
if not map_spain.isValid():
print("Track failed to load! /n" + file_name)
else:
print("Track Load Correct! " + file_name)
else:
uri = 'crs=EPSG:4326&dpiMode=7&format=image/jpeg&layers=IGNBaseTodo&styles=default&tileMatrixSet=EPSG:4326&url=http://www.ign.es/wmts/ign-base'
map_spain = QgsRasterLayer(uri, "Spain", "wms")
self.project.instance().addMapLayer(map_spain)
if not map_spain.isValid():
print("Track failed to load! /n" + file_name)
else:
print("Track Load Correct! " + file_name)
def zoomIn(self):
self.canvas.setMapTool(self.toolZoomIn)
def zoomOut(self):
self.canvas.setMapTool(self.toolZoomOut)
def pan(self):
self.canvas.setMapTool(self.toolPan)
def file(self):
filename, _ = QFileDialog.getOpenFileName(self,
'Selecciona Fichero GPX',
'c:/', 'QGis (*.qgz)')
if filename:
self.project.read(filename)
def initGui(self):
icon = QIcon()
icon.addPixmap(
QPixmap(
"C:/Roberto/Visual_Studio_Code/GisBike/programa/IMG/Qgis.png"),
QIcon.Normal, QIcon.Off)
self.setWindowIcon(icon)
self.setWindowModality(Qt.WindowModal)
self.setWindowFlags(Qt.Window
| Qt.WindowSystemMenuHint
| Qt.WindowMinimizeButtonHint
| Qt.WindowMaximizeButtonHint
| Qt.WindowCloseButtonHint)
self.resize(1200, 600)
self.verticalLayout_2 = QVBoxLayout(self)
self.splitter = QSplitter(self)
self.splitter.setOrientation(Qt.Horizontal)
self.actionZoomIn = QPushButton("Zoom in", self.splitter)
self.actionZoomOut = QPushButton("Zoom out", self.splitter)
self.actionPan = QPushButton("Pan", self.splitter)
self.actionFile = QPushButton("File", self.splitter)
self.project = QgsProject.instance()
self.project.read('C:/Users/Fcc/Desktop/QGis/pruebas2.qgz')
self.root = QgsProject.instance().layerTreeRoot()
self.bridge = QgsLayerTreeMapCanvasBridge(self.root, self.canvas)
self.bridge.setCanvasLayers()
self.bridge.setAutoSetupOnFirstLayer(True)
#https://gis.stackexchange.com/questions/141516/adding-legend-to-canvas-in-standalone-pyqgis-application
self.model = QgsLayerTreeModel(self.root)
self.model.setFlag(QgsLayerTreeModel.AllowNodeReorder)
self.model.setFlag(QgsLayerTreeModel.AllowNodeRename)
self.model.setFlag(QgsLayerTreeModel.AllowNodeChangeVisibility)
self.model.setFlag(QgsLayerTreeModel.ShowLegend)
self.view = QgsLayerTreeView(self.splitter)
self.view.setModel(self.model)
self.view.setFixedWidth(150)
#self.view.resize(150,600)
self.widget = QWidget(self.splitter)
self.verticalLayout = QVBoxLayout(self.widget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout = QHBoxLayout()
self.horizontalLayout.addWidget(self.actionZoomIn)
self.horizontalLayout.addWidget(self.actionZoomOut)
self.horizontalLayout.addWidget(self.actionPan)
self.horizontalLayout.addWidget(self.actionFile)
self.verticalLayout.addLayout(self.horizontalLayout)
self.verticalLayout.addWidget(self.canvas)
self.verticalLayout_2.addWidget(self.splitter)
self.actionZoomIn.clicked.connect(self.zoomIn)
self.actionZoomOut.clicked.connect(self.zoomOut)
self.actionPan.clicked.connect(self.pan)
self.actionFile.clicked.connect(self.file)
# create the map tools
self.toolPan = QgsMapToolPan(self.canvas)
self.toolZoomIn = QgsMapToolZoom(self.canvas, False) # false = in
self.toolZoomOut = QgsMapToolZoom(self.canvas, True) # true = out
def print_layout(project,
layout_name,
feature_filter: str = None,
scales=None,
scale=None,
**kwargs):
"""Generate a PDF for an atlas or a report.
:param project: The QGIS project.
:type project: QgsProject
:param layout_name: Name of the layout of the atlas or report.
:type layout_name: basestring
:param feature_filter: QGIS Expression to use to select the feature.
It can return many features, a multiple pages PDF will be returned.
This is required to print atlas, not report
:type feature_filter: basestring
:param scale: A scale to force in the atlas context. Default to None.
:type scale: int
:param scales: A list of predefined list of scales to force in the atlas context.
Default to None.
:type scales: list
:return: Path to the PDF.
:rtype: basestring
"""
canvas = QgsMapCanvas()
bridge = QgsLayerTreeMapCanvasBridge(project.layerTreeRoot(), canvas)
bridge.setCanvasLayers()
manager = project.layoutManager()
master_layout = manager.layoutByName(layout_name)
settings = QgsLayoutExporter.PdfExportSettings()
atlas = None
atlas_layout = None
report_layout = None
logger = Logger()
if not master_layout:
raise AtlasPrintException('Layout `{}` not found'.format(layout_name))
if master_layout.layoutType() == QgsMasterLayoutInterface.PrintLayout:
for _print_layout in manager.printLayouts():
if _print_layout.name() == layout_name:
atlas_layout = _print_layout
break
atlas = atlas_layout.atlas()
if not atlas.enabled():
raise AtlasPrintException('The layout is not enabled for an atlas')
layer = atlas.coverageLayer()
if feature_filter is None:
raise AtlasPrintException(
'EXP_FILTER is mandatory to print an atlas layout')
feature_filter = optimize_expression(layer, feature_filter)
expression = QgsExpression(feature_filter)
if expression.hasParserError():
raise AtlasPrintException(
'Expression is invalid, parser error: {}'.format(
expression.parserErrorString()))
context = QgsExpressionContext()
context.appendScope(QgsExpressionContextUtils.globalScope())
context.appendScope(QgsExpressionContextUtils.projectScope(project))
context.appendScope(
QgsExpressionContextUtils.layoutScope(atlas_layout))
context.appendScope(QgsExpressionContextUtils.atlasScope(atlas))
context.appendScope(QgsExpressionContextUtils.layerScope(layer))
expression.prepare(context)
if expression.hasEvalError():
raise AtlasPrintException(
'Expression is invalid, eval error: {}'.format(
expression.evalErrorString()))
atlas.setFilterFeatures(True)
atlas.setFilterExpression(feature_filter)
if scale:
atlas_layout.referenceMap().setAtlasScalingMode(
QgsLayoutItemMap.Fixed)
atlas_layout.referenceMap().setScale(scale)
if scales:
atlas_layout.referenceMap().setAtlasScalingMode(
QgsLayoutItemMap.Predefined)
if Qgis.QGIS_VERSION_INT >= 30900:
settings.predefinedMapScales = scales
else:
atlas_layout.reportContext().setPredefinedScales(scales)
if not scales and atlas_layout.referenceMap().atlasScalingMode(
) == QgsLayoutItemMap.Predefined:
if Qgis.QGIS_VERSION_INT >= 30900:
use_project = project.useProjectScales()
map_scales = project.mapScales()
else:
map_scales = project_scales(project)
use_project = len(map_scales) == 0
if not use_project or len(map_scales) == 0:
logger.info(
'Map scales not found in project, fetching predefined map scales in global config'
)
map_scales = global_scales()
if Qgis.QGIS_VERSION_INT >= 30900:
settings.predefinedMapScales = map_scales
else:
atlas_layout.reportContext().setPredefinedScales(map_scales)
elif master_layout.layoutType() == QgsMasterLayoutInterface.Report:
report_layout = master_layout
else:
raise AtlasPrintException('The layout is not supported by the plugin')
for key, value in kwargs.items():
found = False
if atlas_layout:
item = atlas_layout.itemById(key.lower())
if isinstance(item, QgsLayoutItemLabel):
item.setText(value)
found = True
logger.info(
'Additional parameters: {} found in layout {}, value {}'.format(
key, found, value))
export_path = os.path.join(tempfile.gettempdir(),
'{}_{}.pdf'.format(layout_name, uuid4()))
result, error = QgsLayoutExporter.exportToPdf(atlas or report_layout,
export_path, settings)
if result != QgsLayoutExporter.Success and not os.path.isfile(export_path):
raise Exception('export not generated {} ({})'.format(
export_path, error))
return export_path
print layer.name() #show and set map canvas canvas = QgsMapCanvas() canvas.setCanvasColor(Qt.white) #canvas.setCanvasColor(Qt.red) canvas.enableAntiAliasing(True) # set extent to the extent of our layer canvas.setExtent(baselayer.extent()) # Load our project bridge = QgsLayerTreeMapCanvasBridge(QgsProject.instance().layerTreeRoot(), canvas) #QgsProject.instance().read(QFileInfo(project_path)) bridge.setCanvasLayers() canvas.show() #---------------------------------------------------------------------------------------------------------------------------------------- #Part 2. Select local .shp file and load as vector layer #---------------------- from PyQt4.QtCore import * #PyQt4.QtCore --> QFileInfo from PyQt4.QtGui import * # PyQt4.QtGui --> QApplication import qgis.core #qgis.core --> QgsProject, QgsComposition, QgsApplication, QgsProviderRegistry import qgis.gui #adds additional gui components #qgis.gui --> QgsMapCanvas, QgsLayerTreeMapCanvasBridge from glob import glob
def print_layout(
project: QgsProject,
layout_name: str,
output_format: OutputFormat,
feature_filter: str = None,
scales: list = None,
scale: int = None,
**kwargs,
):
"""Generate a PDF for an atlas or a report.
:param project: The QGIS project.
:type project: QgsProject
:param layout_name: Name of the layout of the atlas or report.
:type layout_name: basestring
:param feature_filter: QGIS Expression to use to select the feature.
It can return many features, a multiple pages PDF will be returned.
This is required to print atlas, not report
:type feature_filter: basestring
:param scale: A scale to force in the atlas context. Default to None.
:type scale: int
:param scales: A list of predefined list of scales to force in the atlas context.
Default to None.
:type scales: list
:param output_format: The output format, default to PDF if not provided.
:return: Path to the PDF.
:rtype: basestring
"""
canvas = QgsMapCanvas()
bridge = QgsLayerTreeMapCanvasBridge(project.layerTreeRoot(), canvas)
bridge.setCanvasLayers()
manager = project.layoutManager()
master_layout = manager.layoutByName(layout_name)
if output_format == OutputFormat.Svg:
settings = QgsLayoutExporter.SvgExportSettings()
elif output_format in (OutputFormat.Png, OutputFormat.Jpeg):
settings = QgsLayoutExporter.ImageExportSettings()
else:
# PDF by default
settings = QgsLayoutExporter.PdfExportSettings()
atlas = None
atlas_layout = None
report_layout = None
logger = Logger()
if not master_layout:
raise AtlasPrintException("Layout `{}` not found".format(layout_name))
if master_layout.layoutType() == QgsMasterLayoutInterface.PrintLayout:
for _print_layout in manager.printLayouts():
if _print_layout.name() == layout_name:
atlas_layout = _print_layout
break
atlas = atlas_layout.atlas()
if not atlas.enabled():
raise AtlasPrintException("The layout is not enabled for an atlas")
layer = atlas.coverageLayer()
if feature_filter is None:
raise AtlasPrintException(
"EXP_FILTER is mandatory to print an atlas layout")
feature_filter = optimize_expression(layer, feature_filter)
expression = QgsExpression(feature_filter)
if expression.hasParserError():
raise AtlasPrintException(
"Expression is invalid, parser error: {}".format(
expression.parserErrorString()))
context = QgsExpressionContext()
context.appendScope(QgsExpressionContextUtils.globalScope())
context.appendScope(QgsExpressionContextUtils.projectScope(project))
context.appendScope(
QgsExpressionContextUtils.layoutScope(atlas_layout))
context.appendScope(QgsExpressionContextUtils.atlasScope(atlas))
context.appendScope(QgsExpressionContextUtils.layerScope(layer))
expression.prepare(context)
if expression.hasEvalError():
raise AtlasPrintException(
"Expression is invalid, eval error: {}".format(
expression.evalErrorString()))
atlas.setFilterFeatures(True)
atlas.setFilterExpression(feature_filter)
atlas.updateFeatures()
if scale:
atlas_layout.referenceMap().setAtlasScalingMode(
QgsLayoutItemMap.Fixed)
atlas_layout.referenceMap().setScale(scale)
if scales:
atlas_layout.referenceMap().setAtlasScalingMode(
QgsLayoutItemMap.Predefined)
settings.predefinedMapScales = scales
if (not scales and atlas_layout.referenceMap().atlasScalingMode()
== QgsLayoutItemMap.Predefined):
use_project = project.useProjectScales()
map_scales = project.mapScales()
if not use_project or len(map_scales) == 0:
logger.info(
"Map scales not found in project, fetching predefined map scales in global config"
)
map_scales = global_scales()
settings.predefinedMapScales = map_scales
elif master_layout.layoutType() == QgsMasterLayoutInterface.Report:
report_layout = master_layout
else:
raise AtlasPrintException("The layout is not supported by the plugin")
for key, value in kwargs.items():
found = False
if atlas_layout:
item = atlas_layout.itemById(key.lower())
if isinstance(item, QgsLayoutItemLabel):
item.setText(value)
found = True
logger.info(
'Additional parameters "{key}" {found} in layout, value "{value}"'.
format(key=key,
found="found" if found else "not found",
value=value))
file_name = "{}_{}.{}".format(clean_string(layout_name), uuid4(),
output_format.name.lower())
export_path = Path(tempfile.gettempdir()).joinpath(file_name)
Logger().info("Exporting the request in {} using {}".format(
export_path, output_format.value))
if output_format in (OutputFormat.Png, OutputFormat.Jpeg):
exporter = QgsLayoutExporter(atlas_layout or report_layout)
result = exporter.exportToImage(str(export_path), settings)
error = result_message(result)
elif output_format in (OutputFormat.Svg, ):
exporter = QgsLayoutExporter(atlas_layout or report_layout)
result = exporter.exportToSvg(str(export_path), settings)
error = result_message(result)
else:
# Default to PDF
result, error = QgsLayoutExporter.exportToPdf(atlas or report_layout,
str(export_path),
settings)
# Let's override error message
_ = error
error = result_message(result)
if result != QgsLayoutExporter.Success:
raise Exception("Export not generated in QGIS exporter {} : {}".format(
export_path, error))
if not export_path.is_file():
logger.warning(
"No error from QGIS Exporter, but the file does not exist.\n"
"Message from QGIS exporter : {}\n"
"File path : {}\n".format(error, export_path))
raise Exception(
"Export OK from QGIS, but file not found on the file system : {}".
format(export_path))
return export_path
def responseComplete(self):
request = self.serverIface.requestHandler()
params = request.parameterMap( )
# Check if dynamic layers params are passed
# If not, do not change QGIS Server response
if params['SERVICE'].lower() != 'dynamiclayers':
return
# Check if needed params are set
if 'DLSOURCELAYER' not in params or 'DLEXPRESSION' not in params:
# Change response
request.clearHeaders()
request.setInfoFormat('text/json')
request.setHeader('Status', '200')
request.setHeader('Content-type', 'text/json')
request.clearBody()
body = {
'status': 0,
'message': 'Missing parameters DLSOURCELAYER or DLEXPRESSION',
'childProject': None
}
request.appendBody( json.dumps( body ) )
return
# Get layer and expression
player = params['DLSOURCELAYER']
pexp = params['DLEXPRESSION']
#~ QgsMessageLog.logMessage( "DynamicLayers - layer = %s - expression = %s" % ( player, pexp ))
# Open project
pmap = params['MAP']
self.projectPath = pmap
pfile = QFileInfo( pmap )
p = QgsProject.instance()
# Define canvas and layer treet root
# Needed to write canvas and layer-tree-root in project file
canvas = QgsMapCanvas()
treeRoot = p.layerTreeRoot()
bridge = QgsLayerTreeMapCanvasBridge( treeRoot, canvas )
bridge.setCanvasLayers()
canvas.zoomToFullExtent()
self.canvas = canvas
self.bridge = bridge
self.composers = []
self.project = p
self.project.readProject.connect( bridge.readProject )
self.project.readProject.connect( self.loadComposersFromProject )
self.project.writeProject.connect( bridge.writeProject )
self.project.writeProject.connect( self.writeOldLegend )
self.project.writeProject.connect( self.writeComposers )
# read project
p.read( pfile )
# Get an instance of engine class
dle = DynamicLayersEngine()
# Set the dynamic layers list
dle.setDynamicLayersList()
if not dle.dynamicLayers:
QgsMessageLog.logMessage( "DynamicLayers - no dynamic layers found")
# Change response
request.clearHeaders()
request.setInfoFormat('text/json')
request.setHeader('Status', '200')
request.setHeader('Content-type', 'text/json')
request.setHeader('Content-Disposition', 'attachment; filename="DynamicLayers.json"')
request.clearBody()
body = {
'status': 0,
'message': 'No dynamic layers found in parent project',
'childProject': None
}
request.appendBody( json.dumps( body ) )
return
# Set search and replace dictionary
lr = QgsMapLayerRegistry.instance()
sourceLayerList = [ layer for lname,layer in lr.mapLayers().items() if layer.name() == player ]
if len(sourceLayerList ) != 1:
QgsMessageLog.logMessage( "DynamicLayers - source layer not in project")
# Change response
request.clearHeaders()
request.setInfoFormat('text/json')
request.setHeader('Status', '200')
request.setHeader('Content-type', 'text/json')
request.setHeader('Content-Disposition', 'attachment; filename="DynamicLayers.json"')
request.clearBody()
body = {
'status': 0,
'message': 'The source layer cannot be found in the project',
'childProject': None
}
request.appendBody( json.dumps( body ) )
return
sourceLayer = sourceLayerList[0]
dle.setSearchAndReplaceDictionaryFromLayer( sourceLayer, pexp )
self.searchAndReplaceDictionary = dle.searchAndReplaceDictionary
# Get child name computed path, and check if it is already there or not
childPath = self.getChildProjectName( pmap, player, pexp )
self.childPath = childPath
if os.path.exists( childPath ):
if os.path.getmtime( childPath ) > os.path.getmtime( pmap ):
QgsMessageLog.logMessage( 'DynamicLayer - Parent older than child : do not recreate child project')
# Change response
request.clearHeaders()
request.setInfoFormat('text/json')
request.setHeader('Status', '200')
request.setHeader('Content-type', 'text/json')
request.setHeader('Content-Disposition', 'attachment; filename="DynamicLayers.json"')
request.clearBody()
body = {
'status': 1,
'message': 'Child project is already up-to-date',
'childProject': os.path.basename(childPath)
}
request.appendBody( json.dumps( body ) )
return
else:
QgsMessageLog.logMessage( 'DynamicLayer - Must recreate the child project')
# Change layers datasource
dle.setDynamicLayersDatasourceFromDic( )
# Set project properties
dle.setDynamicProjectProperties()
# Set extent layer
extentLayerIdGet = p.readEntry('PluginDynamicLayers' , 'ExtentLayer')
if extentLayerIdGet:
extentLayerId = extentLayerIdGet[0]
extentLayerList = [ layer for lid,layer in lr.mapLayers().items() if layer.id() == extentLayerId ]
if len(extentLayerList) == 1:
dle.setExtentLayer( extentLayerList[0] )
# Set extent margin
extentMarginGet = p.readEntry('PluginDynamicLayers' , 'ExtentMargin')
if extentMarginGet:
extentMargin = int( extentMarginGet[0] )
else:
extentMargin = 20
dle.setExtentMargin( extentMargin )
# Set new extent
newExtent = dle.setProjectExtent()
self.extent = newExtent
# Zoom to extent Layer
if newExtent:
self.canvas.setExtent( newExtent )
# Create suffix to append after layers id
# prevent cache issues
self.layerIdSuffix = int( time.time() )
# Save child project
childProject = self.saveChildProject()
# Save child project lizmap configuration
if os.path.exists( self.projectPath + '.cfg' ):
self.writeLizmapChildProjectConfig()
if childProject:
# Change response
request.clearHeaders()
request.setInfoFormat('text/json')
request.setHeader('Status', '200')
request.setHeader('Content-type', 'text/json')
request.setHeader('Content-Disposition', 'attachment; filename="DynamicLayers.json"')
request.clearBody()
body = {
'status': 1,
'message': 'Child project has been updated',
'childProject': os.path.basename(childPath)
}
request.appendBody( json.dumps( body ) )
else:
# Change response
request.clearHeaders()
request.setInfoFormat('text/json')
request.setHeader('Status', '200')
request.setHeader('Content-type', 'text/json')
request.setHeader('Content-Disposition', 'attachment; filename="DynamicLayers.json"')
request.clearBody()
body = {
'status': 0,
'message': 'Error while creating child project',
'childProject': None
}
request.appendBody( json.dumps( body ) )
return
