def createTittle(self):
title = QgsLayoutItemLabel(self.layout)
# title.setLocked(False)
title.setText(self.title.text())
title.setFont(self.font)
title.setFontColor(self.color)
title.adjustSizeToText()
self.layout.addLayoutItem(title)
title.attemptMove(QgsLayoutPoint(130, 5, QgsUnitTypes.LayoutMillimeters))
def buildComposerLabel(self, key, item, page):
'''
Add a label to the print layout for an item and page
'''
cl = QgsLayoutItemLabel(self.currentComposition)
# 1st page is a map for parcelle
dpage = page -1
if self.etype == 'parcelle' and self.iface:
dpage = page
cl.attemptMove(
QgsLayoutPoint(
item['position'][0],
item['position'][1]+ (dpage) * (self.pageHeight + 10),
QgsUnitTypes.LayoutMillimeters
)
)
cl.setFixedSize(
QgsLayoutSize(
item['position'][2],
item['position'][3],
QgsUnitTypes.LayoutMillimeters
)
)
cl.setVAlign(item['align'][0])
cl.setHAlign(item['align'][1])
content = self.getContentForGivenItem(
key,
item,
page
)
cl.setMargin(0)
cl.setMode(1)
cl.setText(content)
cl.setFrameEnabled(False)
if 'bgcolor' in item:
cl.setBackgroundColor(item['bgcolor'])
if 'htmlState' in item:
cl.setMode(item['htmlState'])
if 'font' in item:
cl.setFont(item['font'])
self.currentComposition.addLayoutItem(cl)
def buildComposerLabel(self, key, item, page):
'''
Add a label to the print layout for an item and page
'''
cl = QgsLayoutItemLabel(self.currentComposition)
# 1st page is a map for parcelle
dpage = page -1
if self.etype == 'parcelle' and self.print_parcelle_page:
dpage = page
cl.attemptMove(
QgsLayoutPoint(
item['position'][0],
item['position'][1]+ (dpage) * (self.pageHeight + 10),
QgsUnitTypes.LayoutMillimeters
)
)
cl.setFixedSize(
QgsLayoutSize(
item['position'][2],
item['position'][3],
QgsUnitTypes.LayoutMillimeters
)
)
cl.setVAlign(item['align'][0])
cl.setHAlign(item['align'][1])
content = self.getContentForGivenItem(
key,
item,
page
)
cl.setMargin(0)
cl.setMode(1)
cl.setText(content)
cl.setFrameEnabled(False)
if 'bgcolor' in item:
cl.setBackgroundColor(item['bgcolor'])
if 'htmlState' in item:
cl.setMode(item['htmlState'])
if 'font' in item:
cl.setFont(item['font'])
self.currentComposition.addLayoutItem(cl)
class TestQgsLayoutAtlas(unittest.TestCase):
def setUp(self):
self.report = "<h1>Python QgsLayoutAtlas Tests</h1>\n"
def tearDown(self):
report_file_path = "%s/qgistest.html" % QDir.tempPath()
with open(report_file_path, 'a') as report_file:
report_file.write(self.report)
def testCase(self):
self.TEST_DATA_DIR = unitTestDataPath()
tmppath = tempfile.mkdtemp()
for file in glob.glob(os.path.join(self.TEST_DATA_DIR, 'france_parts.*')):
shutil.copy(os.path.join(self.TEST_DATA_DIR, file), tmppath)
vectorFileInfo = QFileInfo(tmppath + "/france_parts.shp")
mVectorLayer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
QgsProject.instance().addMapLayers([mVectorLayer])
self.layers = [mVectorLayer]
# create layout with layout map
# select epsg:2154
crs = QgsCoordinateReferenceSystem()
crs.createFromSrid(2154)
QgsProject.instance().setCrs(crs)
self.layout = QgsPrintLayout(QgsProject.instance())
self.layout.initializeDefaults()
# fix the renderer, fill with green
props = {"color": "0,127,0", 'outline_color': 'black'}
fillSymbol = QgsFillSymbol.createSimple(props)
renderer = QgsSingleSymbolRenderer(fillSymbol)
mVectorLayer.setRenderer(renderer)
# the atlas map
self.atlas_map = QgsLayoutItemMap(self.layout)
self.atlas_map.attemptSetSceneRect(QRectF(20, 20, 130, 130))
self.atlas_map.setFrameEnabled(True)
self.atlas_map.setLayers([mVectorLayer])
self.layout.addLayoutItem(self.atlas_map)
# the atlas
self.atlas = self.layout.atlas()
self.atlas.setCoverageLayer(mVectorLayer)
self.atlas.setEnabled(True)
# an overview
self.overview = QgsLayoutItemMap(self.layout)
self.overview.attemptSetSceneRect(QRectF(180, 20, 50, 50))
self.overview.setFrameEnabled(True)
self.overview.overview().setLinkedMap(self.atlas_map)
self.overview.setLayers([mVectorLayer])
self.layout.addLayoutItem(self.overview)
nextent = QgsRectangle(49670.718, 6415139.086, 699672.519, 7065140.887)
self.overview.setExtent(nextent)
# set the fill symbol of the overview map
props2 = {"color": "127,0,0,127", 'outline_color': 'black'}
fillSymbol2 = QgsFillSymbol.createSimple(props2)
self.overview.overview().setFrameSymbol(fillSymbol2)
# header label
self.mLabel1 = QgsLayoutItemLabel(self.layout)
self.layout.addLayoutItem(self.mLabel1)
self.mLabel1.setText("[% \"NAME_1\" %] area")
self.mLabel1.setFont(QgsFontUtils.getStandardTestFont())
self.mLabel1.adjustSizeToText()
self.mLabel1.attemptSetSceneRect(QRectF(150, 5, 60, 15))
self.mLabel1.setMarginX(1)
self.mLabel1.setMarginY(1)
# feature number label
self.mLabel2 = QgsLayoutItemLabel(self.layout)
self.layout.addLayoutItem(self.mLabel2)
self.mLabel2.setText("# [%@atlas_featurenumber || ' / ' || @atlas_totalfeatures%]")
self.mLabel2.setFont(QgsFontUtils.getStandardTestFont())
self.mLabel2.adjustSizeToText()
self.mLabel2.attemptSetSceneRect(QRectF(150, 200, 60, 15))
self.mLabel2.setMarginX(1)
self.mLabel2.setMarginY(1)
self.filename_test()
self.autoscale_render_test()
self.fixedscale_render_test()
self.predefinedscales_render_test()
self.hidden_render_test()
self.legend_test()
self.rotation_test()
shutil.rmtree(tmppath, True)
def testReadWriteXml(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setHideCoverage(True)
atlas.setFilenameExpression('filename exp')
atlas.setCoverageLayer(vector_layer)
atlas.setPageNameExpression('page name')
atlas.setSortFeatures(True)
atlas.setSortAscending(False)
atlas.setSortExpression('sort exp')
atlas.setFilterFeatures(True)
atlas.setFilterExpression('filter exp')
doc = QDomDocument("testdoc")
elem = l.writeXml(doc, QgsReadWriteContext())
l2 = QgsPrintLayout(p)
self.assertTrue(l2.readXml(elem, doc, QgsReadWriteContext()))
atlas2 = l2.atlas()
self.assertTrue(atlas2.enabled())
self.assertTrue(atlas2.hideCoverage())
self.assertEqual(atlas2.filenameExpression(), 'filename exp')
self.assertEqual(atlas2.coverageLayer(), vector_layer)
self.assertEqual(atlas2.pageNameExpression(), 'page name')
self.assertTrue(atlas2.sortFeatures())
self.assertFalse(atlas2.sortAscending())
self.assertEqual(atlas2.sortExpression(), 'sort exp')
self.assertTrue(atlas2.filterFeatures())
self.assertEqual(atlas2.filterExpression(), 'filter exp')
def testIteration(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
atlas_feature_changed_spy = QSignalSpy(atlas.featureChanged)
context_changed_spy = QSignalSpy(l.reportContext().changed)
self.assertTrue(atlas.beginRender())
self.assertTrue(atlas.first())
self.assertEqual(len(atlas_feature_changed_spy), 1)
self.assertEqual(len(context_changed_spy), 1)
self.assertEqual(atlas.currentFeatureNumber(), 0)
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
self.assertEqual(l.reportContext().layer(), vector_layer)
f1 = l.reportContext().feature()
self.assertTrue(atlas.next())
self.assertEqual(len(atlas_feature_changed_spy), 2)
self.assertEqual(len(context_changed_spy), 2)
self.assertEqual(atlas.currentFeatureNumber(), 1)
self.assertEqual(l.reportContext().feature()[4], 'Bretagne')
f2 = l.reportContext().feature()
self.assertTrue(atlas.next())
self.assertEqual(len(atlas_feature_changed_spy), 3)
self.assertEqual(len(context_changed_spy), 3)
self.assertEqual(atlas.currentFeatureNumber(), 2)
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
f3 = l.reportContext().feature()
self.assertTrue(atlas.next())
self.assertEqual(len(atlas_feature_changed_spy), 4)
self.assertEqual(len(context_changed_spy), 4)
self.assertEqual(atlas.currentFeatureNumber(), 3)
self.assertEqual(l.reportContext().feature()[4], 'Centre')
f4 = l.reportContext().feature()
self.assertFalse(atlas.next())
self.assertTrue(atlas.seekTo(2))
self.assertEqual(len(atlas_feature_changed_spy), 5)
self.assertEqual(len(context_changed_spy), 5)
self.assertEqual(atlas.currentFeatureNumber(), 2)
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
self.assertTrue(atlas.last())
self.assertEqual(len(atlas_feature_changed_spy), 6)
self.assertEqual(len(context_changed_spy), 6)
self.assertEqual(atlas.currentFeatureNumber(), 3)
self.assertEqual(l.reportContext().feature()[4], 'Centre')
self.assertTrue(atlas.previous())
self.assertEqual(len(atlas_feature_changed_spy), 7)
self.assertEqual(len(context_changed_spy), 7)
self.assertEqual(atlas.currentFeatureNumber(), 2)
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
self.assertTrue(atlas.previous())
self.assertTrue(atlas.previous())
self.assertEqual(len(atlas_feature_changed_spy), 9)
self.assertFalse(atlas.previous())
self.assertEqual(len(atlas_feature_changed_spy), 9)
self.assertTrue(atlas.endRender())
self.assertEqual(len(atlas_feature_changed_spy), 10)
self.assertTrue(atlas.seekTo(f1))
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
self.assertTrue(atlas.seekTo(f4))
self.assertEqual(l.reportContext().feature()[4], 'Centre')
self.assertTrue(atlas.seekTo(f3))
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
self.assertTrue(atlas.seekTo(f2))
self.assertEqual(l.reportContext().feature()[4], 'Bretagne')
self.assertFalse(atlas.seekTo(QgsFeature(5)))
def testUpdateFeature(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
self.assertTrue(atlas.beginRender())
self.assertTrue(atlas.first())
self.assertEqual(atlas.currentFeatureNumber(), 0)
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
self.assertEqual(l.reportContext().layer(), vector_layer)
vector_layer.startEditing()
self.assertTrue(vector_layer.changeAttributeValue(l.reportContext().feature().id(), 4, 'Nah, Canberra mate!'))
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
l.atlas().refreshCurrentFeature()
self.assertEqual(l.reportContext().feature()[4], 'Nah, Canberra mate!')
vector_layer.rollBack()
def testFileName(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
atlas.setFilenameExpression("'output_' || \"NAME_1\"")
self.assertTrue(atlas.beginRender())
self.assertEqual(atlas.count(), 4)
atlas.first()
self.assertEqual(atlas.currentFilename(), 'output_Basse-Normandie')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Basse-Normandie.png')
self.assertEqual(atlas.filePath('/tmp/output/', '.png'), '/tmp/output/output_Basse-Normandie.png')
self.assertEqual(atlas.filePath('/tmp/output/', 'svg'), '/tmp/output/output_Basse-Normandie.svg')
atlas.next()
self.assertEqual(atlas.currentFilename(), 'output_Bretagne')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Bretagne.png')
atlas.next()
self.assertEqual(atlas.currentFilename(), 'output_Pays de la Loire')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Pays de la Loire.png')
atlas.next()
self.assertEqual(atlas.currentFilename(), 'output_Centre')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Centre.png')
# try changing expression, filename should be updated instantly
atlas.setFilenameExpression("'export_' || \"NAME_1\"")
self.assertEqual(atlas.currentFilename(), 'export_Centre')
atlas.endRender()
def testNameForPage(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
atlas.setPageNameExpression("\"NAME_1\"")
self.assertTrue(atlas.beginRender())
self.assertEqual(atlas.nameForPage(0), 'Basse-Normandie')
self.assertEqual(atlas.nameForPage(1), 'Bretagne')
self.assertEqual(atlas.nameForPage(2), 'Pays de la Loire')
self.assertEqual(atlas.nameForPage(3), 'Centre')
def filename_test(self):
self.atlas.setFilenameExpression("'output_' || @atlas_featurenumber")
self.atlas.beginRender()
for i in range(0, self.atlas.count()):
self.atlas.seekTo(i)
expected = "output_%d" % (i + 1)
self.assertEqual(self.atlas.currentFilename(), expected)
self.atlas.endRender()
# using feature attribute (refs https://issues.qgis.org/issues/19552)
self.atlas.setFilenameExpression("'output_' || attribute(@atlas_feature,'NAME_1')")
expected = ['output_Basse-Normandie',
'output_Bretagne',
'output_Pays de la Loire',
'output_Centre']
self.atlas.beginRender()
for i in range(0, self.atlas.count()):
self.atlas.seekTo(i)
self.assertEqual(self.atlas.currentFilename(), expected[i])
self.atlas.endRender()
def autoscale_render_test(self):
self.atlas_map.setExtent(
QgsRectangle(332719.06221504929, 6765214.5887386119, 560957.85090677091, 6993453.3774303338))
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Auto)
self.atlas_map.setAtlasMargin(0.10)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_autoscale%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
self.atlas_map.setAtlasDriven(False)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas_map.setAtlasMargin(0)
def fixedscale_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_fixedscale%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def predefinedscales_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Predefined)
scales = [1800000, 5000000]
self.layout.reportContext().setPredefinedScales(scales)
for i, s in enumerate(self.layout.reportContext().predefinedScales()):
self.assertEqual(s, scales[i])
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_predefinedscales%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def hidden_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.setHideCoverage(True)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_hiding%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
self.atlas.setHideCoverage(False)
def sorting_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.setHideCoverage(False)
self.atlas.setSortFeatures(True)
self.atlas.setSortKeyAttributeIndex(4) # departement name
self.atlas.setSortAscending(False)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_sorting%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def filtering_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.setHideCoverage(False)
self.atlas.setSortFeatures(False)
self.atlas.setFilterFeatures(True)
self.atlas.setFeatureFilter("substr(NAME_1,1,1)='P'") # select only 'Pays de la loire'
self.atlas.beginRender()
for i in range(0, 1):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_filtering%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def legend_test(self):
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Auto)
self.atlas_map.setAtlasMargin(0.10)
# add a point layer
ptLayer = QgsVectorLayer("Point?crs=epsg:4326&field=attr:int(1)&field=label:string(20)", "points", "memory")
pr = ptLayer.dataProvider()
f1 = QgsFeature(1)
f1.initAttributes(2)
f1.setAttribute(0, 1)
f1.setAttribute(1, "Test label 1")
f1.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(-0.638, 48.954)))
f2 = QgsFeature(2)
f2.initAttributes(2)
f2.setAttribute(0, 2)
f2.setAttribute(1, "Test label 2")
f2.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(-1.682, 48.550)))
pr.addFeatures([f1, f2])
# categorized symbology
r = QgsCategorizedSymbolRenderer("attr", [QgsRendererCategory(1, QgsMarkerSymbol.createSimple({"color": "255,0,0", 'outline_color': 'black'}), "red"),
QgsRendererCategory(2, QgsMarkerSymbol.createSimple({"color": "0,0,255", 'outline_color': 'black'}), "blue")])
ptLayer.setRenderer(r)
QgsProject.instance().addMapLayer(ptLayer)
# add the point layer to the map settings
layers = self.layers
layers = [ptLayer] + layers
self.atlas_map.setLayers(layers)
self.overview.setLayers(layers)
# add a legend
legend = QgsLayoutItemLegend(self.layout)
legend.attemptMove(QgsLayoutPoint(200, 100))
# sets the legend filter parameter
legend.setLinkedMap(self.atlas_map)
legend.setLegendFilterOutAtlas(True)
self.layout.addLayoutItem(legend)
self.atlas.beginRender()
self.atlas.seekTo(0)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_legend', self.layout)
myTestResult, myMessage = checker.testLayout()
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
# restore state
self.atlas_map.setLayers([layers[1]])
self.layout.removeLayoutItem(legend)
QgsProject.instance().removeMapLayer(ptLayer.id())
def rotation_test(self):
# We will create a polygon layer with a rotated rectangle.
# Then we will make it the object layer for the atlas,
# rotate the map and test that the bounding rectangle
# is smaller than the bounds without rotation.
polygonLayer = QgsVectorLayer('Polygon', 'test_polygon', 'memory')
poly = QgsFeature(polygonLayer.fields())
points = [(10, 15), (15, 10), (45, 40), (40, 45)]
poly.setGeometry(QgsGeometry.fromPolygonXY([[QgsPointXY(x[0], x[1]) for x in points]]))
polygonLayer.dataProvider().addFeatures([poly])
QgsProject.instance().addMapLayer(polygonLayer)
# Recreating the layout locally
composition = QgsPrintLayout(QgsProject.instance())
composition.initializeDefaults()
# the atlas map
atlasMap = QgsLayoutItemMap(composition)
atlasMap.attemptSetSceneRect(QRectF(20, 20, 130, 130))
atlasMap.setFrameEnabled(True)
atlasMap.setLayers([polygonLayer])
atlasMap.setExtent(QgsRectangle(0, 0, 100, 50))
composition.addLayoutItem(atlasMap)
# the atlas
atlas = composition.atlas()
atlas.setCoverageLayer(polygonLayer)
atlas.setEnabled(True)
atlasMap.setAtlasDriven(True)
atlasMap.setAtlasScalingMode(QgsLayoutItemMap.Auto)
atlasMap.setAtlasMargin(0.0)
# Testing
atlasMap.setMapRotation(0.0)
atlas.beginRender()
atlas.first()
nonRotatedExtent = QgsRectangle(atlasMap.extent())
atlasMap.setMapRotation(45.0)
atlas.first()
rotatedExtent = QgsRectangle(atlasMap.extent())
self.assertLess(rotatedExtent.width(), nonRotatedExtent.width() * 0.9)
self.assertLess(rotatedExtent.height(), nonRotatedExtent.height() * 0.9)
QgsProject.instance().removeMapLayer(polygonLayer)
class TestQgsLayoutAtlas(unittest.TestCase):
def setUp(self):
self.report = "<h1>Python QgsLayoutAtlas Tests</h1>\n"
def tearDown(self):
report_file_path = "%s/qgistest.html" % QDir.tempPath()
with open(report_file_path, 'a') as report_file:
report_file.write(self.report)
def testCase(self):
self.TEST_DATA_DIR = unitTestDataPath()
tmppath = tempfile.mkdtemp()
for file in glob.glob(os.path.join(self.TEST_DATA_DIR, 'france_parts.*')):
shutil.copy(os.path.join(self.TEST_DATA_DIR, file), tmppath)
vectorFileInfo = QFileInfo(tmppath + "/france_parts.shp")
mVectorLayer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
QgsProject.instance().addMapLayers([mVectorLayer])
self.layers = [mVectorLayer]
# create layout with layout map
# select epsg:2154
crs = QgsCoordinateReferenceSystem()
crs.createFromSrid(2154)
QgsProject.instance().setCrs(crs)
self.layout = QgsPrintLayout(QgsProject.instance())
self.layout.initializeDefaults()
# fix the renderer, fill with green
props = {"color": "0,127,0", 'outline_color': 'black'}
fillSymbol = QgsFillSymbol.createSimple(props)
renderer = QgsSingleSymbolRenderer(fillSymbol)
mVectorLayer.setRenderer(renderer)
# the atlas map
self.atlas_map = QgsLayoutItemMap(self.layout)
self.atlas_map.attemptSetSceneRect(QRectF(20, 20, 130, 130))
self.atlas_map.setFrameEnabled(True)
self.atlas_map.setLayers([mVectorLayer])
self.layout.addLayoutItem(self.atlas_map)
# the atlas
self.atlas = self.layout.atlas()
self.atlas.setCoverageLayer(mVectorLayer)
self.atlas.setEnabled(True)
# an overview
self.overview = QgsLayoutItemMap(self.layout)
self.overview.attemptSetSceneRect(QRectF(180, 20, 50, 50))
self.overview.setFrameEnabled(True)
self.overview.overview().setLinkedMap(self.atlas_map)
self.overview.setLayers([mVectorLayer])
self.layout.addLayoutItem(self.overview)
nextent = QgsRectangle(49670.718, 6415139.086, 699672.519, 7065140.887)
self.overview.setExtent(nextent)
# set the fill symbol of the overview map
props2 = {"color": "127,0,0,127", 'outline_color': 'black'}
fillSymbol2 = QgsFillSymbol.createSimple(props2)
self.overview.overview().setFrameSymbol(fillSymbol2)
# header label
self.mLabel1 = QgsLayoutItemLabel(self.layout)
self.layout.addLayoutItem(self.mLabel1)
self.mLabel1.setText("[% \"NAME_1\" %] area")
self.mLabel1.setFont(QgsFontUtils.getStandardTestFont())
self.mLabel1.adjustSizeToText()
self.mLabel1.attemptSetSceneRect(QRectF(150, 5, 60, 15))
self.mLabel1.setMarginX(1)
self.mLabel1.setMarginY(1)
# feature number label
self.mLabel2 = QgsLayoutItemLabel(self.layout)
self.layout.addLayoutItem(self.mLabel2)
self.mLabel2.setText("# [%@atlas_featurenumber || ' / ' || @atlas_totalfeatures%]")
self.mLabel2.setFont(QgsFontUtils.getStandardTestFont())
self.mLabel2.adjustSizeToText()
self.mLabel2.attemptSetSceneRect(QRectF(150, 200, 60, 15))
self.mLabel2.setMarginX(1)
self.mLabel2.setMarginY(1)
self.filename_test()
self.autoscale_render_test()
self.fixedscale_render_test()
self.predefinedscales_render_test()
self.hidden_render_test()
self.legend_test()
self.rotation_test()
shutil.rmtree(tmppath, True)
def testReadWriteXml(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setHideCoverage(True)
atlas.setFilenameExpression('filename exp')
atlas.setCoverageLayer(vector_layer)
atlas.setPageNameExpression('page name')
atlas.setSortFeatures(True)
atlas.setSortAscending(False)
atlas.setSortExpression('sort exp')
atlas.setFilterFeatures(True)
atlas.setFilterExpression('filter exp')
doc = QDomDocument("testdoc")
elem = l.writeXml(doc, QgsReadWriteContext())
l2 = QgsPrintLayout(p)
self.assertTrue(l2.readXml(elem, doc, QgsReadWriteContext()))
atlas2 = l2.atlas()
self.assertTrue(atlas2.enabled())
self.assertTrue(atlas2.hideCoverage())
self.assertEqual(atlas2.filenameExpression(), 'filename exp')
self.assertEqual(atlas2.coverageLayer(), vector_layer)
self.assertEqual(atlas2.pageNameExpression(), 'page name')
self.assertTrue(atlas2.sortFeatures())
self.assertFalse(atlas2.sortAscending())
self.assertEqual(atlas2.sortExpression(), 'sort exp')
self.assertTrue(atlas2.filterFeatures())
self.assertEqual(atlas2.filterExpression(), 'filter exp')
def testIteration(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
atlas_feature_changed_spy = QSignalSpy(atlas.featureChanged)
context_changed_spy = QSignalSpy(l.reportContext().changed)
self.assertTrue(atlas.beginRender())
self.assertTrue(atlas.first())
self.assertEqual(len(atlas_feature_changed_spy), 1)
self.assertEqual(len(context_changed_spy), 1)
self.assertEqual(atlas.currentFeatureNumber(), 0)
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
self.assertEqual(l.reportContext().layer(), vector_layer)
f1 = l.reportContext().feature()
self.assertTrue(atlas.next())
self.assertEqual(len(atlas_feature_changed_spy), 2)
self.assertEqual(len(context_changed_spy), 2)
self.assertEqual(atlas.currentFeatureNumber(), 1)
self.assertEqual(l.reportContext().feature()[4], 'Bretagne')
f2 = l.reportContext().feature()
self.assertTrue(atlas.next())
self.assertEqual(len(atlas_feature_changed_spy), 3)
self.assertEqual(len(context_changed_spy), 3)
self.assertEqual(atlas.currentFeatureNumber(), 2)
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
f3 = l.reportContext().feature()
self.assertTrue(atlas.next())
self.assertEqual(len(atlas_feature_changed_spy), 4)
self.assertEqual(len(context_changed_spy), 4)
self.assertEqual(atlas.currentFeatureNumber(), 3)
self.assertEqual(l.reportContext().feature()[4], 'Centre')
f4 = l.reportContext().feature()
self.assertFalse(atlas.next())
self.assertTrue(atlas.seekTo(2))
self.assertEqual(len(atlas_feature_changed_spy), 5)
self.assertEqual(len(context_changed_spy), 5)
self.assertEqual(atlas.currentFeatureNumber(), 2)
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
self.assertTrue(atlas.last())
self.assertEqual(len(atlas_feature_changed_spy), 6)
self.assertEqual(len(context_changed_spy), 6)
self.assertEqual(atlas.currentFeatureNumber(), 3)
self.assertEqual(l.reportContext().feature()[4], 'Centre')
self.assertTrue(atlas.previous())
self.assertEqual(len(atlas_feature_changed_spy), 7)
self.assertEqual(len(context_changed_spy), 7)
self.assertEqual(atlas.currentFeatureNumber(), 2)
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
self.assertTrue(atlas.previous())
self.assertTrue(atlas.previous())
self.assertEqual(len(atlas_feature_changed_spy), 9)
self.assertFalse(atlas.previous())
self.assertEqual(len(atlas_feature_changed_spy), 9)
self.assertTrue(atlas.endRender())
self.assertEqual(len(atlas_feature_changed_spy), 10)
self.assertTrue(atlas.seekTo(f1))
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
self.assertTrue(atlas.seekTo(f4))
self.assertEqual(l.reportContext().feature()[4], 'Centre')
self.assertTrue(atlas.seekTo(f3))
self.assertEqual(l.reportContext().feature()[4], 'Pays de la Loire')
self.assertTrue(atlas.seekTo(f2))
self.assertEqual(l.reportContext().feature()[4], 'Bretagne')
self.assertFalse(atlas.seekTo(QgsFeature(5)))
def testUpdateFeature(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
self.assertTrue(atlas.beginRender())
self.assertTrue(atlas.first())
self.assertEqual(atlas.currentFeatureNumber(), 0)
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
self.assertEqual(l.reportContext().layer(), vector_layer)
vector_layer.startEditing()
self.assertTrue(vector_layer.changeAttributeValue(l.reportContext().feature().id(), 4, 'Nah, Canberra mate!'))
self.assertEqual(l.reportContext().feature()[4], 'Basse-Normandie')
l.atlas().refreshCurrentFeature()
self.assertEqual(l.reportContext().feature()[4], 'Nah, Canberra mate!')
vector_layer.rollBack()
def testFileName(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
atlas.setFilenameExpression("'output_' || \"NAME_1\"")
self.assertTrue(atlas.beginRender())
self.assertEqual(atlas.count(), 4)
atlas.first()
self.assertEqual(atlas.currentFilename(), 'output_Basse-Normandie')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Basse-Normandie.png')
self.assertEqual(atlas.filePath('/tmp/output/', '.png'), '/tmp/output/output_Basse-Normandie.png')
self.assertEqual(atlas.filePath('/tmp/output/', 'svg'), '/tmp/output/output_Basse-Normandie.svg')
atlas.next()
self.assertEqual(atlas.currentFilename(), 'output_Bretagne')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Bretagne.png')
atlas.next()
self.assertEqual(atlas.currentFilename(), 'output_Pays de la Loire')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Pays de la Loire.png')
atlas.next()
self.assertEqual(atlas.currentFilename(), 'output_Centre')
self.assertEqual(atlas.filePath('/tmp/output/', 'png'), '/tmp/output/output_Centre.png')
# try changing expression, filename should be updated instantly
atlas.setFilenameExpression("'export_' || \"NAME_1\"")
self.assertEqual(atlas.currentFilename(), 'export_Centre')
atlas.endRender()
def testNameForPage(self):
p = QgsProject()
vectorFileInfo = QFileInfo(unitTestDataPath() + "/france_parts.shp")
vector_layer = QgsVectorLayer(vectorFileInfo.filePath(), vectorFileInfo.completeBaseName(), "ogr")
self.assertTrue(vector_layer.isValid())
p.addMapLayer(vector_layer)
l = QgsPrintLayout(p)
atlas = l.atlas()
atlas.setEnabled(True)
atlas.setCoverageLayer(vector_layer)
atlas.setPageNameExpression("\"NAME_1\"")
self.assertTrue(atlas.beginRender())
self.assertEqual(atlas.nameForPage(0), 'Basse-Normandie')
self.assertEqual(atlas.nameForPage(1), 'Bretagne')
self.assertEqual(atlas.nameForPage(2), 'Pays de la Loire')
self.assertEqual(atlas.nameForPage(3), 'Centre')
def filename_test(self):
self.atlas.setFilenameExpression("'output_' || @atlas_featurenumber")
self.atlas.beginRender()
for i in range(0, self.atlas.count()):
self.atlas.seekTo(i)
expected = "output_%d" % (i + 1)
self.assertEqual(self.atlas.currentFilename(), expected)
self.atlas.endRender()
def autoscale_render_test(self):
self.atlas_map.setExtent(
QgsRectangle(332719.06221504929, 6765214.5887386119, 560957.85090677091, 6993453.3774303338))
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Auto)
self.atlas_map.setAtlasMargin(0.10)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_autoscale%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
self.atlas_map.setAtlasDriven(False)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas_map.setAtlasMargin(0)
def fixedscale_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_fixedscale%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def predefinedscales_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Predefined)
scales = [1800000, 5000000]
self.layout.reportContext().setPredefinedScales(scales)
for i, s in enumerate(self.layout.reportContext().predefinedScales()):
self.assertEqual(s, scales[i])
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_predefinedscales%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def hidden_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.setHideCoverage(True)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_hiding%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
self.atlas.setHideCoverage(False)
def sorting_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.setHideCoverage(False)
self.atlas.setSortFeatures(True)
self.atlas.setSortKeyAttributeIndex(4) # departement name
self.atlas.setSortAscending(False)
self.atlas.beginRender()
for i in range(0, 2):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_sorting%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def filtering_render_test(self):
self.atlas_map.setExtent(QgsRectangle(209838.166, 6528781.020, 610491.166, 6920530.620))
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Fixed)
self.atlas.setHideCoverage(False)
self.atlas.setSortFeatures(False)
self.atlas.setFilterFeatures(True)
self.atlas.setFeatureFilter("substr(NAME_1,1,1)='P'") # select only 'Pays de la loire'
self.atlas.beginRender()
for i in range(0, 1):
self.atlas.seekTo(i)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_filtering%d' % (i + 1), self.layout)
checker.setControlPathPrefix("atlas")
myTestResult, myMessage = checker.testLayout(0, 200)
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
def legend_test(self):
self.atlas_map.setAtlasDriven(True)
self.atlas_map.setAtlasScalingMode(QgsLayoutItemMap.Auto)
self.atlas_map.setAtlasMargin(0.10)
# add a point layer
ptLayer = QgsVectorLayer("Point?crs=epsg:4326&field=attr:int(1)&field=label:string(20)", "points", "memory")
pr = ptLayer.dataProvider()
f1 = QgsFeature(1)
f1.initAttributes(2)
f1.setAttribute(0, 1)
f1.setAttribute(1, "Test label 1")
f1.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(-0.638, 48.954)))
f2 = QgsFeature(2)
f2.initAttributes(2)
f2.setAttribute(0, 2)
f2.setAttribute(1, "Test label 2")
f2.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(-1.682, 48.550)))
pr.addFeatures([f1, f2])
# categorized symbology
r = QgsCategorizedSymbolRenderer("attr", [QgsRendererCategory(1, QgsMarkerSymbol.createSimple({"color": "255,0,0", 'outline_color': 'black'}), "red"),
QgsRendererCategory(2, QgsMarkerSymbol.createSimple({"color": "0,0,255", 'outline_color': 'black'}), "blue")])
ptLayer.setRenderer(r)
QgsProject.instance().addMapLayer(ptLayer)
# add the point layer to the map settings
layers = self.layers
layers = [ptLayer] + layers
self.atlas_map.setLayers(layers)
self.overview.setLayers(layers)
# add a legend
legend = QgsLayoutItemLegend(self.layout)
legend.attemptMove(QgsLayoutPoint(200, 100))
# sets the legend filter parameter
legend.setLinkedMap(self.atlas_map)
legend.setLegendFilterOutAtlas(True)
self.layout.addLayoutItem(legend)
self.atlas.beginRender()
self.atlas.seekTo(0)
self.mLabel1.adjustSizeToText()
checker = QgsLayoutChecker('atlas_legend', self.layout)
myTestResult, myMessage = checker.testLayout()
self.report += checker.report()
self.assertTrue(myTestResult, myMessage)
self.atlas.endRender()
# restore state
self.atlas_map.setLayers([layers[1]])
self.layout.removeLayoutItem(legend)
QgsProject.instance().removeMapLayer(ptLayer.id())
def rotation_test(self):
# We will create a polygon layer with a rotated rectangle.
# Then we will make it the object layer for the atlas,
# rotate the map and test that the bounding rectangle
# is smaller than the bounds without rotation.
polygonLayer = QgsVectorLayer('Polygon', 'test_polygon', 'memory')
poly = QgsFeature(polygonLayer.fields())
points = [(10, 15), (15, 10), (45, 40), (40, 45)]
poly.setGeometry(QgsGeometry.fromPolygonXY([[QgsPointXY(x[0], x[1]) for x in points]]))
polygonLayer.dataProvider().addFeatures([poly])
QgsProject.instance().addMapLayer(polygonLayer)
# Recreating the layout locally
composition = QgsPrintLayout(QgsProject.instance())
composition.initializeDefaults()
# the atlas map
atlasMap = QgsLayoutItemMap(composition)
atlasMap.attemptSetSceneRect(QRectF(20, 20, 130, 130))
atlasMap.setFrameEnabled(True)
atlasMap.setLayers([polygonLayer])
atlasMap.setExtent(QgsRectangle(0, 0, 100, 50))
composition.addLayoutItem(atlasMap)
# the atlas
atlas = composition.atlas()
atlas.setCoverageLayer(polygonLayer)
atlas.setEnabled(True)
atlasMap.setAtlasDriven(True)
atlasMap.setAtlasScalingMode(QgsLayoutItemMap.Auto)
atlasMap.setAtlasMargin(0.0)
# Testing
atlasMap.setMapRotation(0.0)
atlas.beginRender()
atlas.first()
nonRotatedExtent = QgsRectangle(atlasMap.extent())
atlasMap.setMapRotation(45.0)
atlas.first()
rotatedExtent = QgsRectangle(atlasMap.extent())
self.assertLess(rotatedExtent.width(), nonRotatedExtent.width() * 0.9)
self.assertLess(rotatedExtent.height(), nonRotatedExtent.height() * 0.9)
QgsProject.instance().removeMapLayer(polygonLayer)
def processAlgorithm(self, parameters, context, feedback):
"""This actually creates the print layout and exporting as .pdf document"""
log = feedback.setProgressText
input_title = self.parameterAsString(parameters, self.INPUT_TITLE,
context)
input_subtitle = self.parameterAsString(parameters,
self.INPUT_SUBTITLE, context)
input_credit_text = self.parameterAsString(parameters,
self.INPUT_CREDIT_TEXT,
context)
output_pdf_path = self.parameterAsString(parameters,
self.OUTPUT_PDF_PATH, context)
log(f"Title: {input_title}")
log(f"Subtitle: {input_subtitle}")
log(f"Credit Text: {input_credit_text}")
log(f"Output pdf path: {output_pdf_path}")
#This creates a new print layout
project = context.project()
manager = project.layoutManager()
layout = QgsPrintLayout(project)
layoutName = 'EcoValuator Layout' #layoutName is going to be name of Title. Change this later
layouts_list = manager.printLayouts()
for layout in layouts_list:
if layout.name() == layoutName:
manager.removeLayout(layout)
layout = QgsPrintLayout(project)
layout.initializeDefaults() #create default map canvas
layout.setName(layoutName)
manager.addLayout(layout)
#This adds a map item to the Print Layout
map = QgsLayoutItemMap(layout)
map.setRect(20, 20, 20, 20)
#Set Extent
canvas = iface.mapCanvas()
map.setExtent(canvas.extent()) #sets map extent to current map canvas
layout.addLayoutItem(map)
#Move & Resize
map.attemptMove(QgsLayoutPoint(5, 27, QgsUnitTypes.LayoutMillimeters))
map.attemptResize(
QgsLayoutSize(218, 178, QgsUnitTypes.LayoutMillimeters))
#Gather visible layers in project layer tree and create a list of the map layer objects
#Those which are not active (layers_to_remove) will subsequently remove from the legend model
tree_layers = project.layerTreeRoot().children()
active_layers = [
layer.name() for layer in tree_layers if layer.isVisible()
]
layers_to_remove = [
layer for layer in project.mapLayers().values()
if layer.name() not in active_layers
]
#This adds a legend item to the Print Layout
legend = QgsLayoutItemLegend(layout)
layout.addLayoutItem(legend)
legend.attemptMove(
QgsLayoutPoint(219, 5, QgsUnitTypes.LayoutMillimeters))
#Get reference to existing legend model and root group then remove the unchecked layers
legend.setAutoUpdateModel(False) #not sure if this line is required
model = legend.model()
group = model.rootGroup()
for layer in layers_to_remove:
group.removeLayer(layer)
legend.adjustBoxSize()
#This adds labels to the map
title = QgsLayoutItemLabel(layout)
title.setText(input_title)
title.setFont(QFont("Arial", 28))
title.adjustSizeToText()
layout.addLayoutItem(title)
title.attemptMove(QgsLayoutPoint(10, 4,
QgsUnitTypes.LayoutMillimeters))
subtitle = QgsLayoutItemLabel(layout)
subtitle.setText(input_subtitle)
subtitle.setFont(QFont("Arial", 17))
subtitle.adjustSizeToText()
layout.addLayoutItem(subtitle)
subtitle.attemptMove(
QgsLayoutPoint(11, 20, QgsUnitTypes.LayoutMillimeters))
credit_text = QgsLayoutItemLabel(layout)
credit_text.setText(input_credit_text)
credit_text.setFont(QFont("Arial", 10))
credit_text.adjustSizeToText()
layout.addLayoutItem(credit_text)
credit_text.attemptMove(
QgsLayoutPoint(219, 190, QgsUnitTypes.LayoutMillimeters))
#this creates credit text (line1) in bottom right corner of map layout giving credit to Key-Log Economics
keylog_credits1 = QgsLayoutItemLabel(layout)
keylog_credits1.setText("Created using EcoValuator Plugin")
keylog_credits1.setFont(QFont("Arial", 10))
keylog_credits1.adjustSizeToText()
layout.addLayoutItem(keylog_credits1)
keylog_credits1.attemptMove(
QgsLayoutPoint(219, 195, QgsUnitTypes.LayoutMillimeters))
#this creates credit text (line2) in bottom right corner of map layout giving credit to Key-Log Economics
keylog_credits2 = QgsLayoutItemLabel(layout)
keylog_credits2.setText("by Key-Log Economics")
keylog_credits2.setFont(QFont("Arial", 10))
keylog_credits2.adjustSizeToText()
layout.addLayoutItem(keylog_credits2)
keylog_credits2.attemptMove(
QgsLayoutPoint(219, 200, QgsUnitTypes.LayoutMillimeters))
#This exports a Print Layout as an image
manager = QgsProject.instance().layoutManager(
) #this is a reference to the layout Manager, which contains a list of print layouts
layout = manager.layoutByName(
layoutName
) #this accesses a specific layout, by name (which is a string)
exporter = QgsLayoutExporter(
layout) #this creates a QgsLayoutExporter object
exporter.exportToPdf(output_pdf_path,
QgsLayoutExporter.PdfExportSettings())
log("Done!")
result = {
} #The processAlgorithm wants to return a dictionary. We don't actually need to do this so instead we return an empty one
return result
