def testDeferredUpdate(self):
""" test that map canvas doesn't auto refresh on deferred layer update """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
while canvas.isDrawing():
app.processEvents()
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# deferred update - so expect that canvas will not been refreshed
layer.triggerRepaint(True)
timeout = time.time() + 0.1
while time.time() < timeout:
# messy, but only way to check that canvas redraw doesn't occur
self.assertFalse(canvas.isDrawing())
# canvas should still be empty
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# refresh canvas
canvas.refresh()
while not canvas.isDrawing():
app.processEvents()
while canvas.isDrawing():
app.processEvents()
# now we expect the canvas check to fail (since they'll be a new polygon rendered over it)
self.assertFalse(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
def testPosition(self):
""" test that map canvas annotation item syncs position correctly """
a = QgsTextAnnotation()
a.setFrameSizeMm(QSizeF(300 / 3.7795275, 200 / 3.7795275))
a.setFrameOffsetFromReferencePointMm(QPointF(40 / 3.7795275, 50 / 3.7795275))
a.setMapPosition(QgsPointXY(12, 34))
a.setMapPositionCrs(QgsCoordinateReferenceSystem(4326))
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.show()
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
i = QgsMapCanvasAnnotationItem(a, canvas)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
# test that correct initial position is set
self.assertAlmostEqual(i.pos().x(), 120, 1)
self.assertAlmostEqual(i.pos().y(), 110, 1)
# shift annotation map position, check that item is moved
a.setMapPosition(QgsPointXY(14, 32))
self.assertAlmostEqual(i.pos().x(), 240, 1)
self.assertAlmostEqual(i.pos().y(), 230, 1)
# check relative position
a.setHasFixedMapPosition(False)
a.setRelativePosition(QPointF(0.8, 0.4))
self.assertAlmostEqual(i.pos().x(), 480, 1)
self.assertAlmostEqual(i.pos().y(), 160, 1)
# flicking between relative and fixed position
a.setHasFixedMapPosition(True)
self.assertAlmostEqual(i.pos().x(), 240, 1)
self.assertAlmostEqual(i.pos().y(), 230, 1)
a.setHasFixedMapPosition(False)
self.assertAlmostEqual(i.pos().x(), 480, 1)
self.assertAlmostEqual(i.pos().y(), 160, 1)
def testPosition(self):
""" test that map canvas annotation item syncs position correctly """
a = QgsTextAnnotation()
a.setFrameSize(QSizeF(300, 200))
a.setFrameOffsetFromReferencePoint(QPointF(40, 50))
a.setMapPosition(QgsPointXY(12, 34))
a.setMapPositionCrs(QgsCoordinateReferenceSystem(4326))
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.show()
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
i = QgsMapCanvasAnnotationItem(a, canvas)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
# test that correct initial position is set
self.assertAlmostEqual(i.pos().x(), 120, 1)
self.assertAlmostEqual(i.pos().y(), 110, 1)
# shift annotation map position, check that item is moved
a.setMapPosition(QgsPointXY(14, 32))
self.assertAlmostEqual(i.pos().x(), 240, 1)
self.assertAlmostEqual(i.pos().y(), 230, 1)
# check relative position
a.setHasFixedMapPosition(False)
a.setRelativePosition(QPointF(0.8, 0.4))
self.assertAlmostEqual(i.pos().x(), 480, 1)
self.assertAlmostEqual(i.pos().y(), 160, 1)
# flicking between relative and fixed position
a.setHasFixedMapPosition(True)
self.assertAlmostEqual(i.pos().x(), 240, 1)
self.assertAlmostEqual(i.pos().y(), 230, 1)
a.setHasFixedMapPosition(False)
self.assertAlmostEqual(i.pos().x(), 480, 1)
self.assertAlmostEqual(i.pos().y(), 160, 1)
def testDeferredUpdate(self):
""" test that map canvas doesn't auto refresh on deferred layer update """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# deferred update - so expect that canvas will not been refreshed
layer.triggerRepaint(True)
timeout = time.time() + 0.1
while time.time() < timeout:
# messy, but only way to check that canvas redraw doesn't occur
self.assertFalse(canvas.isDrawing())
# canvas should still be empty
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# refresh canvas
canvas.refresh()
canvas.waitWhileRendering()
# now we expect the canvas check to fail (since they'll be a new polygon rendered over it)
self.assertFalse(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
def testDefaultViewExtentWithCanvas(self):
p = QgsProject()
p.setCrs(QgsCoordinateReferenceSystem('EPSG:3857'))
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
tmpDir = QTemporaryDir()
tmpFile = "{}/project.qgz".format(tmpDir.path())
self.assertTrue(p.write(tmpFile))
QgsProject.instance().read(tmpFile)
# no default view, extent should not change
self.assertAlmostEqual(canvas.extent().xMinimum(), 10, 3)
self.assertAlmostEqual(canvas.extent().yMinimum(), 29.16666, 3)
self.assertAlmostEqual(canvas.extent().xMaximum(), 20, 3)
self.assertAlmostEqual(canvas.extent().yMaximum(), 35.833333333, 3)
self.assertEqual(canvas.mapSettings().destinationCrs().authid(),
'EPSG:4326')
p.viewSettings().setDefaultViewExtent(
QgsReferencedRectangle(QgsRectangle(1000, 2000, 1500, 2500),
QgsCoordinateReferenceSystem('EPSG:3857')))
self.assertTrue(p.write(tmpFile))
QgsProject.instance().read(tmpFile)
self.assertAlmostEqual(canvas.extent().xMinimum(), 0.0078602, 3)
self.assertAlmostEqual(canvas.extent().yMinimum(), 0.017966, 3)
self.assertAlmostEqual(canvas.extent().xMaximum(), 0.01459762, 3)
self.assertAlmostEqual(canvas.extent().yMaximum(), 0.02245788, 3)
self.assertEqual(canvas.mapSettings().destinationCrs().authid(),
'EPSG:4326')
def testRefreshOnTimer(self):
""" test that map canvas refreshes with auto refreshing layers """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(
self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# set auto refresh on layer
layer.setAutoRefreshInterval(100)
layer.setAutoRefreshEnabled(True)
timeout = time.time() + 1
# expect canvas to auto refresh...
while not canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
while canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
# add a polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# wait for canvas auto refresh
while not canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
while canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
# now canvas should look different...
self.assertFalse(
self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# switch off auto refresh
layer.setAutoRefreshEnabled(False)
timeout = time.time() + 0.5
while time.time() < timeout:
# messy, but only way to check that canvas redraw doesn't occur
self.assertFalse(canvas.isDrawing())
def testMapTheme(self):
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
# add a polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# create a style
sym1 = QgsFillSymbol.createSimple({'color': '#ffb200'})
renderer = QgsSingleSymbolRenderer(sym1)
layer.setRenderer(renderer)
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add some styles
layer.styleManager().addStyleFromLayer('style1')
sym2 = QgsFillSymbol.createSimple({'color': '#00b2ff'})
renderer2 = QgsSingleSymbolRenderer(sym2)
layer.setRenderer(renderer2)
layer.styleManager().addStyleFromLayer('style2')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme2', 'theme2', canvas))
layer.styleManager().setCurrentStyle('style1')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# ok, so all good with setting/rendering map styles
# try setting canvas to a particular theme
# make some themes...
theme1 = QgsMapThemeCollection.MapThemeRecord()
record1 = QgsMapThemeCollection.MapThemeLayerRecord(layer)
record1.currentStyle = 'style1'
record1.usingCurrentStyle = True
theme1.setLayerRecords([record1])
theme2 = QgsMapThemeCollection.MapThemeRecord()
record2 = QgsMapThemeCollection.MapThemeLayerRecord(layer)
record2.currentStyle = 'style2'
record2.usingCurrentStyle = True
theme2.setLayerRecords([record2])
QgsProject.instance().mapThemeCollection().insert('theme1', theme1)
QgsProject.instance().mapThemeCollection().insert('theme2', theme2)
canvas.setTheme('theme2')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme2', 'theme2', canvas))
canvas.setTheme('theme1')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add another layer
layer2 = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer2", "memory")
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer2.dataProvider().addFeatures([f]))
# create a style
sym1 = QgsFillSymbol.createSimple({'color': '#b2ff00'})
renderer = QgsSingleSymbolRenderer(sym1)
layer2.setRenderer(renderer)
# rerender canvas - should NOT show new layer
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# test again - this time refresh all layers
canvas.refreshAllLayers()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add layer 2 to theme1
record3 = QgsMapThemeCollection.MapThemeLayerRecord(layer2)
theme1.setLayerRecords([record3])
QgsProject.instance().mapThemeCollection().update('theme1', theme1)
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme3', 'theme3', canvas))
# change the appearance of an active style
layer2.styleManager().addStyleFromLayer('original')
layer2.styleManager().addStyleFromLayer('style4')
record3.currentStyle = 'style4'
record3.usingCurrentStyle = True
theme1.setLayerRecords([record3])
QgsProject.instance().mapThemeCollection().update('theme1', theme1)
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme3', 'theme3', canvas))
layer2.styleManager().setCurrentStyle('style4')
sym3 = QgsFillSymbol.createSimple({'color': '#b200b2'})
layer2.renderer().setSymbol(sym3)
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme4', 'theme4', canvas))
# try setting layers while a theme is in place
canvas.setLayers([layer])
canvas.refresh()
# should be no change... setLayers should be ignored if canvas is following a theme!
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme4', 'theme4', canvas))
# setLayerStyleOverrides while theme is in place
canvas.setLayerStyleOverrides({layer2.id(): 'original'})
# should be no change... setLayerStyleOverrides should be ignored if canvas is following a theme!
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme4', 'theme4', canvas))
# clear theme
canvas.setTheme('')
canvas.refresh()
canvas.waitWhileRendering()
# should be different - we should now render project layers
self.assertFalse(self.canvasImageCheck('theme4', 'theme4', canvas))
def testRefreshOnTimer(self):
""" test that map canvas refreshes with auto refreshing layers """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# set auto refresh on layer
layer.setAutoRefreshInterval(100)
layer.setAutoRefreshEnabled(True)
timeout = time.time() + 1
# expect canvas to auto refresh...
while not canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
while canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
# add a polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# wait for canvas auto refresh
while not canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
while canvas.isDrawing():
app.processEvents()
self.assertTrue(time.time() < timeout)
# now canvas should look different...
self.assertFalse(self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# switch off auto refresh
layer.setAutoRefreshEnabled(False)
timeout = time.time() + 0.5
while time.time() < timeout:
# messy, but only way to check that canvas redraw doesn't occur
self.assertFalse(canvas.isDrawing())
def testMapTheme(self):
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
# add a polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# create a style
sym1 = QgsFillSymbol.createSimple({'color': '#ffb200'})
renderer = QgsSingleSymbolRenderer(sym1)
layer.setRenderer(renderer)
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add some styles
layer.styleManager().addStyleFromLayer('style1')
sym2 = QgsFillSymbol.createSimple({'color': '#00b2ff'})
renderer2 = QgsSingleSymbolRenderer(sym2)
layer.setRenderer(renderer2)
layer.styleManager().addStyleFromLayer('style2')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme2', 'theme2', canvas))
layer.styleManager().setCurrentStyle('style1')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# OK, so all good with setting/rendering map styles
# try setting canvas to a particular theme
# make some themes...
theme1 = QgsMapThemeCollection.MapThemeRecord()
record1 = QgsMapThemeCollection.MapThemeLayerRecord(layer)
record1.currentStyle = 'style1'
record1.usingCurrentStyle = True
theme1.setLayerRecords([record1])
theme2 = QgsMapThemeCollection.MapThemeRecord()
record2 = QgsMapThemeCollection.MapThemeLayerRecord(layer)
record2.currentStyle = 'style2'
record2.usingCurrentStyle = True
theme2.setLayerRecords([record2])
QgsProject.instance().mapThemeCollection().insert('theme1', theme1)
QgsProject.instance().mapThemeCollection().insert('theme2', theme2)
canvas.setTheme('theme2')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme2', 'theme2', canvas))
canvas.setTheme('theme1')
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add another layer
layer2 = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer2", "memory")
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer2.dataProvider().addFeatures([f]))
# create a style
sym1 = QgsFillSymbol.createSimple({'color': '#b2ff00'})
renderer = QgsSingleSymbolRenderer(sym1)
layer2.setRenderer(renderer)
# rerender canvas - should NOT show new layer
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# test again - this time refresh all layers
canvas.refreshAllLayers()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme1', 'theme1', canvas))
# add layer 2 to theme1
record3 = QgsMapThemeCollection.MapThemeLayerRecord(layer2)
theme1.setLayerRecords([record3])
QgsProject.instance().mapThemeCollection().update('theme1', theme1)
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme3', 'theme3', canvas))
# change the appearance of an active style
layer2.styleManager().addStyleFromLayer('original')
layer2.styleManager().addStyleFromLayer('style4')
record3.currentStyle = 'style4'
record3.usingCurrentStyle = True
theme1.setLayerRecords([record3])
QgsProject.instance().mapThemeCollection().update('theme1', theme1)
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme3', 'theme3', canvas))
layer2.styleManager().setCurrentStyle('style4')
sym3 = QgsFillSymbol.createSimple({'color': '#b200b2'})
layer2.renderer().setSymbol(sym3)
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme4', 'theme4', canvas))
# try setting layers while a theme is in place
canvas.setLayers([layer])
canvas.refresh()
# should be no change... setLayers should be ignored if canvas is following a theme!
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme4', 'theme4', canvas))
# setLayerStyleOverrides while theme is in place
canvas.setLayerStyleOverrides({layer2.id(): 'original'})
# should be no change... setLayerStyleOverrides should be ignored if canvas is following a theme!
canvas.refresh()
canvas.waitWhileRendering()
self.assertTrue(self.canvasImageCheck('theme4', 'theme4', canvas))
# clear theme
canvas.setTheme('')
canvas.refresh()
canvas.waitWhileRendering()
# should be different - we should now render project layers
self.assertFalse(self.canvasImageCheck('theme4', 'theme4', canvas))
def test_rendered_item_results_remove_outdated(self):
"""
Test that outdated results are removed from rendered item result caches
"""
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.setCachingEnabled(True)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
self.assertTrue(layer.isValid())
layer2 = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
self.assertTrue(layer2.isValid())
item = QgsAnnotationPolygonItem(
QgsPolygon(
QgsLineString([
QgsPoint(11.5, 13),
QgsPoint(12, 13),
QgsPoint(12, 13.5),
QgsPoint(11.5, 13)
])))
item.setSymbol(
QgsFillSymbol.createSimple({
'color': '200,100,100',
'outline_color': 'black',
'outline_width': '2'
}))
item.setZIndex(1)
i1_id = layer.addItem(item)
item = QgsAnnotationLineItem(
QgsLineString(
[QgsPoint(11, 13),
QgsPoint(12, 13),
QgsPoint(12, 15)]))
item.setZIndex(2)
i2_id = layer.addItem(item)
item = QgsAnnotationMarkerItem(QgsPoint(12, 13))
item.setZIndex(3)
i3_id = layer2.addItem(item)
layer.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
layer2.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setLayers([layer, layer2])
canvas.setExtent(QgsRectangle(10, 10, 18, 18))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
self.assertCountEqual([i.itemId() for i in results.renderedItems()],
[i1_id, i2_id, i3_id])
# now try modifying an annotation in the layer -- it will redraw, and we don't want to reuse any previously
# cached rendered item results for this layer!
item = QgsAnnotationPolygonItem(
QgsPolygon(
QgsLineString([
QgsPoint(11.5, 13),
QgsPoint(12.5, 13),
QgsPoint(12.5, 13.5),
QgsPoint(11.5, 13)
])))
item.setZIndex(1)
layer.replaceItem(i1_id, item)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
item = QgsAnnotationMarkerItem(QgsPoint(17, 18))
item.setZIndex(3)
layer2.replaceItem(i3_id, item)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
items_in_bounds = results.renderedAnnotationItemsInBounds(
QgsRectangle(10, 10, 15, 15))
self.assertCountEqual([i.itemId() for i in items_in_bounds],
[i1_id, i2_id])
items_in_bounds = results.renderedAnnotationItemsInBounds(
QgsRectangle(15, 15, 20, 20))
self.assertCountEqual([i.itemId() for i in items_in_bounds], [i3_id])
def test_rendered_items(self):
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
canvas.setCachingEnabled(True)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
self.assertTrue(layer.isValid())
layer2 = QgsAnnotationLayer(
'test',
QgsAnnotationLayer.LayerOptions(
QgsProject.instance().transformContext()))
self.assertTrue(layer2.isValid())
item = QgsAnnotationPolygonItem(
QgsPolygon(
QgsLineString([
QgsPoint(11.5, 13),
QgsPoint(12, 13),
QgsPoint(12, 13.5),
QgsPoint(11.5, 13)
])))
item.setSymbol(
QgsFillSymbol.createSimple({
'color': '200,100,100',
'outline_color': 'black',
'outline_width': '2'
}))
item.setZIndex(1)
i1_id = layer.addItem(item)
item = QgsAnnotationLineItem(
QgsLineString(
[QgsPoint(11, 13),
QgsPoint(12, 13),
QgsPoint(12, 15)]))
item.setZIndex(2)
i2_id = layer.addItem(item)
item = QgsAnnotationMarkerItem(QgsPoint(12, 13))
item.setZIndex(3)
i3_id = layer2.addItem(item)
layer.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
layer2.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setLayers([layer, layer2])
canvas.setExtent(QgsRectangle(10, 10, 18, 18))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
self.assertCountEqual([i.itemId() for i in results.renderedItems()],
[i1_id, i2_id, i3_id])
# turn off a layer -- the other layer will be rendered direct from the cached version
canvas.setLayers([layer2])
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
# only layer2 items should be present in results -- but these MUST be present while layer2 is visible in the canvas,
# even though the most recent canvas redraw used a cached version of layer2 and didn't actually have to redraw the layer
self.assertEqual([i.itemId() for i in results.renderedItems()],
[i3_id])
# turn layer 1 back on
canvas.setLayers([layer, layer2])
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
results = canvas.renderedItemResults()
# both layer1 and layer2 items should be present in results -- even though NEITHER of these layers were re-rendered,
# and instead we used precached renders of both layers
self.assertCountEqual([i.itemId() for i in results.renderedItems()],
[i1_id, i2_id, i3_id])
def testDistrictBoundaryMatches(self):
"""
Test retrieving district boundary matches
"""
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
f = QgsFeature()
f.setAttributes(['a'])
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 15, 45)))
f2 = QgsFeature()
f2.setAttributes(['a'])
f2.setGeometry(QgsGeometry.fromRect(QgsRectangle(15, 25, 18, 45)))
f3 = QgsFeature()
f3.setAttributes(['b'])
f3.setGeometry(
QgsGeometry.fromWkt(
'Polygon((18 30.01 19 35, 20 30, 19 25, 18 29.99, 20 30, 18 30.01))'
))
success, (f, f2, f3) = layer.dataProvider().addFeatures([f, f2, f3])
self.assertTrue(success)
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
handler = RedistrictHandler(layer, 'fldtxt')
registry = DistrictRegistry(districts=['a', 'b'])
tool = InteractiveRedistrictingTool(canvas,
handler,
district_registry=registry)
# point inside a feature
self.assertFalse(tool.get_district_boundary_matches(QgsPointXY(10,
30)))
self.assertFalse(
[f for f in tool.get_target_features_from_matches([])])
self.assertFalse(tool.get_districts_from_matches([]))
self.assertFalse(tool.matches_are_valid_for_boundary([]))
# point directly on boundary
matches = tool.get_district_boundary_matches(QgsPointXY(15, 30))
self.assertTrue(matches)
self.assertCountEqual([match.featureId() for match in matches],
[f.id(), f2.id()])
self.assertCountEqual(
[f.id() for f in tool.get_target_features_from_matches(matches)],
[f.id(), f2.id()])
self.assertCountEqual(tool.get_districts_from_matches(matches), ['a'])
# not a valid boundary match - both features have same district!
self.assertFalse(tool.matches_are_valid_for_boundary(matches))
# point just offset from boundary
matches = tool.get_district_boundary_matches(QgsPointXY(15.1, 30))
self.assertTrue(matches)
self.assertCountEqual([match.featureId() for match in matches],
[f.id(), f2.id()])
self.assertCountEqual(
[f.id() for f in tool.get_target_features_from_matches(matches)],
[f.id(), f2.id()])
self.assertCountEqual(tool.get_districts_from_matches(matches), ['a'])
self.assertFalse(tool.matches_are_valid_for_boundary(matches))
# unique matches only
matches = tool.get_district_boundary_matches(QgsPointXY(18, 30))
self.assertTrue(matches)
self.assertCountEqual([match.featureId() for match in matches],
[f2.id(), f3.id()])
self.assertCountEqual(
[f.id() for f in tool.get_target_features_from_matches(matches)],
[f2.id(), f3.id()])
self.assertCountEqual(tool.get_districts_from_matches(matches),
['a', 'b'])
# valid boundary match - both features have different districts
self.assertTrue(tool.matches_are_valid_for_boundary(matches))
def testInteraction(self): # pylint: disable=too-many-statements
"""
Test tool interaction
"""
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
f = QgsFeature()
f.setAttributes(['a'])
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 32, 15, 45)))
f2 = QgsFeature()
f2.setAttributes(['b'])
f2.setGeometry(QgsGeometry.fromRect(QgsRectangle(15, 25, 18, 45)))
success, (f, f2) = layer.dataProvider().addFeatures([f, f2])
self.assertTrue(success)
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
handler = RedistrictHandler(layer, 'fldtxt')
factory = DecoratorFactory()
registry = DistrictRegistry(districts=['a', 'b'])
tool = InteractiveRedistrictingTool(canvas,
handler,
district_registry=registry,
decorator_factory=factory)
# mouse over a feature's interior
point = canvas.mapSettings().mapToPixel().transform(20, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertFalse(tool.is_active)
self.assertFalse(tool.snap_indicator.match().isValid())
# mouse over a single feature's boundary (not valid district boundary)
point = canvas.mapSettings().mapToPixel().transform(5, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertFalse(tool.is_active)
self.assertFalse(tool.snap_indicator.match().isValid())
# mouse over a two feature's boundary (valid district boundary)
point = canvas.mapSettings().mapToPixel().transform(15, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertFalse(tool.is_active)
self.assertTrue(tool.snap_indicator.match().isValid())
# avoid segfault
tool.snap_indicator.setMatch(QgsPointLocator.Match())
# clicks to ignore
point = canvas.mapSettings().mapToPixel().transform(10, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.MidButton)
tool.canvasPressEvent(event)
self.assertFalse(tool.is_active)
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.RightButton)
tool.canvasPressEvent(event)
self.assertFalse(tool.is_active)
# click over bad area
point = canvas.mapSettings().mapToPixel().transform(10, 30)
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.LeftButton)
tool.canvasPressEvent(event)
self.assertFalse(tool.is_active)
# click over feature area
layer.startEditing()
point = canvas.mapSettings().mapToPixel().transform(10, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.LeftButton)
tool.canvasPressEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.click_point.x(), 10)
self.assertEqual(tool.click_point.y(), 33)
self.assertEqual(tool.districts, {'a'})
self.assertFalse(tool.modified)
# now move over current feature - should do nothing!
point = canvas.mapSettings().mapToPixel().transform(10, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertTrue(tool.is_active)
self.assertFalse(tool.modified)
# move over other feature
self.assertEqual(layer.getFeature(f2.id())[0], 'b')
point = canvas.mapSettings().mapToPixel().transform(16, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.modified, {f2.id()})
self.assertEqual(tool.current_district, 'a')
self.assertEqual(layer.getFeature(f2.id())[0], 'a')
# move over nothing
point = canvas.mapSettings().mapToPixel().transform(26, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.modified, {f2.id()})
# left click - commit changes
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.LeftButton)
tool.canvasPressEvent(event)
self.assertFalse(tool.is_active)
layer.rollBack()
layer.startEditing()
# add a decorator
tool.decorator_factory = TestDecoratorFactory()
# now try with clicks over boundary
point = canvas.mapSettings().mapToPixel().transform(15, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.LeftButton)
tool.canvasPressEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.click_point.x(), 15)
self.assertEqual(tool.click_point.y(), 33)
self.assertEqual(tool.districts, {'a', 'b'})
self.assertFalse(tool.modified)
# move left
self.assertEqual(layer.getFeature(f.id())[0], 'a')
self.assertEqual(layer.getFeature(f2.id())[0], 'b')
point = canvas.mapSettings().mapToPixel().transform(10, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.modified, {f.id()})
self.assertEqual(tool.current_district, 'b')
self.assertEqual(layer.getFeature(f.id())[0], 'b')
self.assertEqual(layer.getFeature(f2.id())[0], 'b')
# move over nothing
point = canvas.mapSettings().mapToPixel().transform(26, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.modified, {f.id()})
# right click - discard changes
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.RightButton)
tool.canvasPressEvent(event)
self.assertFalse(tool.is_active)
self.assertEqual(layer.getFeature(f.id())[0], 'a')
self.assertEqual(layer.getFeature(f2.id())[0], 'b')
# try again, move right
point = canvas.mapSettings().mapToPixel().transform(15, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.LeftButton)
tool.canvasPressEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.click_point.x(), 15)
self.assertEqual(tool.click_point.y(), 33)
self.assertEqual(tool.districts, {'a', 'b'})
self.assertFalse(tool.modified)
# move right
self.assertEqual(layer.getFeature(f.id())[0], 'a')
self.assertEqual(layer.getFeature(f2.id())[0], 'b')
point = canvas.mapSettings().mapToPixel().transform(17, 33)
event = QgsMapMouseEvent(canvas, QEvent.MouseMove,
QPoint(point.x(), point.y()))
tool.canvasMoveEvent(event)
self.assertTrue(tool.is_active)
self.assertEqual(tool.modified, {f2.id()})
self.assertEqual(tool.current_district, 'a')
self.assertEqual(layer.getFeature(f.id())[0], 'a')
self.assertEqual(layer.getFeature(f2.id())[0], 'a')
event = QgsMapMouseEvent(canvas, QEvent.MouseButtonPress,
QPoint(point.x(), point.y()), Qt.RightButton)
tool.canvasPressEvent(event)
self.assertFalse(tool.is_active)
self.assertEqual(layer.getFeature(f.id())[0], 'a')
self.assertEqual(layer.getFeature(f2.id())[0], 'b')
layer.rollBack()
def testMainAnnotationLayerRendered(self):
""" test that main annotation layer is rendered above all other layers """
canvas = QgsMapCanvas()
canvas.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
canvas.setFrameStyle(0)
canvas.resize(600, 400)
self.assertEqual(canvas.width(), 600)
self.assertEqual(canvas.height(), 400)
layer = QgsVectorLayer("Polygon?crs=epsg:4326&field=fldtxt:string",
"layer", "memory")
sym3 = QgsFillSymbol.createSimple({'color': '#b200b2'})
layer.renderer().setSymbol(sym3)
canvas.setLayers([layer])
canvas.setExtent(QgsRectangle(10, 30, 20, 35))
canvas.show()
# need to wait until first redraw can occur (note that we first need to wait till drawing starts!)
while not canvas.isDrawing():
app.processEvents()
canvas.waitWhileRendering()
self.assertTrue(
self.canvasImageCheck('empty_canvas', 'empty_canvas', canvas))
# add polygon to layer
f = QgsFeature()
f.setGeometry(QgsGeometry.fromRect(QgsRectangle(5, 25, 25, 45)))
self.assertTrue(layer.dataProvider().addFeatures([f]))
# refresh canvas
canvas.refresh()
canvas.waitWhileRendering()
# no annotation yet...
self.assertFalse(
self.canvasImageCheck('main_annotation_layer',
'main_annotation_layer',
canvas,
expect_fail=True))
annotation_layer = QgsProject.instance().mainAnnotationLayer()
annotation_layer.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
annotation_geom = QgsGeometry.fromRect(QgsRectangle(12, 30, 18, 33))
annotation = QgsAnnotationPolygonItem(
annotation_geom.constGet().clone())
sym3 = QgsFillSymbol.createSimple({
'color': '#ff0000',
'outline_style': 'no'
})
annotation.setSymbol(sym3)
annotation_layer.addItem(annotation)
# refresh canvas
canvas.refresh()
canvas.waitWhileRendering()
# annotation must be rendered over other layers
self.assertTrue(
self.canvasImageCheck('main_annotation_layer',
'main_annotation_layer', canvas))
annotation_layer.clear()
class WidgetResult(Ui_widgetResult, QWidget):
"""
Widget (Panel) for result review
"""
''' buffer around clicked point for point in polygon query '''
SEARCH_BUFFER = 20.0
''' supported export formats '''
EXPORT_FORMATS = {
get_ui_string("app.extension.shapefile"):
ExportTypes.Shapefile,
#get_ui_string("app.extension.kml"):ExportTypes.KML,
#get_ui_string("app.extension.nrml"):ExportTypes.NRML,
get_ui_string("app.extension.csv"):
ExportTypes.CSV,
}
''' enumeration of Layer to be previewed '''
EXPOSURE, SURVEY, POP_GRID, FOOTPRINT, ZONES = range(5)
''' name for Layer to be previewed '''
LAYER_NAMES = [
get_ui_string("widget.result.layer.exposure"),
get_ui_string("widget.result.layer.survey"),
get_ui_string("widget.result.layer.popgrid"),
get_ui_string("widget.result.layer.footprint"),
get_ui_string("widget.result.layer.zones"),
]
LAYER_STYLES = [
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="******" class="SimpleLine" locked="0"><prop k="capstyle" v="square"/><prop k="color" v="0,0,0,255"/><prop k="customdash" v="5;2"/><prop k="joinstyle" v="bevel"/><prop k="offset" v="0"/><prop k="penstyle" v="solid"/><prop k="use_custom_dash" v="0"/><prop k="width" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="marker" name="0"><layer pass="******" class="SimpleMarker" locked="0"><prop k="angle" v="0"/><prop k="color" v="0,0,255,255"/><prop k="color_border" v="0,0,255,255"/><prop k="name" v="circle"/><prop k="offset" v="0,0"/><prop k="size" v="2"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="marker" name="0"><layer pass="******" class="SimpleMarker" locked="0"><prop k="angle" v="0"/><prop k="color" v="0,255,0,255"/><prop k="color_border" v="0,255,0,255"/><prop k="name" v="rectangle"/><prop k="offset" v="0,0"/><prop k="size" v="4"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="******" class="SimpleFill" locked="0"><prop k="color" v="170,250,170,255"/><prop k="color_border" v="0,0,0,255"/><prop k="offset" v="0,0"/><prop k="style" v="solid"/><prop k="style_border" v="solid"/><prop k="width_border" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="******" class="SimpleFill" locked="0"><prop k="color" v="211,211,158,200"/><prop k="color_border" v="0,0,0,255"/><prop k="offset" v="0,0"/><prop k="style" v="solid"/><prop k="style_border" v="solid"/><prop k="width_border" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
]
# constructor / destructor
###############################
def __init__(self, app):
"""
constructor
- initialize UI elements
- connect UI elements to callback
"""
super(WidgetResult, self).__init__()
self.ui = Ui_widgetResult()
self.ui.setupUi(self)
# create canvas
self.canvas = QgsMapCanvas(self.ui.widget_map)
self.canvas.setGeometry(
0, # x
self.ui.widget_map_menu_l.x() +
self.ui.widget_map_menu_l.height(), # y
self.ui.widget_map.width() - 2 * UI_PADDING, # width
self.ui.widget_map.width() - 2 * UI_PADDING # height
)
self.canvas.setCanvasColor(Qt.white)
self.canvas.enableAntiAliasing(True)
self.canvas.mapRenderer().setProjectionsEnabled(True)
self.canvas.mapRenderer().setDestinationCrs(
QgsCoordinateReferenceSystem(
4326, QgsCoordinateReferenceSystem.PostgisCrsId))
self.canvas.zoomNextStatusChanged.connect(self.checkRendering)
self.canvas.xyCoordinates.connect(self.currentLocation)
self.registry = QgsMapLayerRegistry.instance()
self.map_layers = [None] * len(self.LAYER_NAMES)
self.map_layer_renderer = [None] * len(self.LAYER_NAMES)
for idx, str_style in enumerate(self.LAYER_STYLES):
rdoc = QDomDocument("renderer")
rdoc.setContent(str_style)
self.map_layer_renderer[idx] = QgsFeatureRendererV2.load(
rdoc.firstChild().toElement())
# populate export list
self.ui.cb_export_format.clear()
for export_format in self.EXPORT_FORMATS.keys():
self.ui.cb_export_format.addItem(export_format)
# style object required for QgsRendererV2PropertiesDialog
self.style = QgsStyleV2()
# 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
self.toolInfo = QgsMapToolEmitPoint(self.canvas)
self.toolInfo.canvasClicked.connect(self.showInfo)
self.canvas.setMapTool(self.toolPan)
# additional
self.dlgResultDetail = DialogResult()
self.dlgResultDetail.setModal(True)
# set link to application main controller
self.app = app
# reset project
self._project = None
# default export setting
self.export_format = ExportTypes.Shapefile
# connect slots (ui event)
self.ui.btn_zoom_full.clicked.connect(self.mapZoomFull)
self.ui.btn_zoom_in.clicked.connect(self.mapZoomIn)
self.ui.btn_zoom_out.clicked.connect(self.mapZoomOut)
self.ui.btn_stop.clicked.connect(self.stopRendering)
self.ui.btn_zoom_layer.clicked.connect(self.mapZoomLayer)
self.ui.btn_pan.clicked.connect(self.mapPan)
self.ui.btn_theme.clicked.connect(self.mapEditTheme)
self.ui.btn_info.clicked.connect(self.mapIdentify)
self.ui.btn_zoom_to_feature.clicked.connect(self.searchFeature)
self.ui.cb_export_format.currentIndexChanged[str].connect(
self.exportFormatChanged)
self.ui.btn_export.clicked.connect(self.exportData)
self.ui.btn_export_select_path.clicked.connect(self.selectExportFile)
@pyqtSlot(QgsPoint)
def currentLocation(self, point):
self.app.updateMapLocation(point.x(), point.y())
#self.canvas.mouseMoveEvent(mouseEvent)
# UI event handling calls (Qt slots)
###############################
@pyqtSlot(QObject)
def resizeEvent(self, event):
""" handle window resize """
# find left coordinate for right side panels
x_right_side = self.width() - self.ui.widget_export.width(
) - UI_PADDING
# adjust right side panels
self.ui.widget_export.move(x_right_side, self.ui.widget_map.y() + 30)
self.ui.widget_dq_test.move(
x_right_side,
self.ui.widget_export.y() + self.ui.widget_export.height() +
UI_PADDING)
# adjust map panel (left side)
self.ui.widget_map.resize(x_right_side - UI_PADDING,
self.height() - 2 * UI_PADDING)
# adjust map canvas within the map panel
map_top = self.ui.widget_map_menu_l.x(
) + self.ui.widget_map_menu_l.height() + UI_PADDING
self.canvas.resize(
x_right_side - UI_PADDING, # same width as self.ui.widget_map
self.ui.widget_map.height() - map_top - 2 * UI_PADDING) # height
# adjust map menu
self.ui.widget_map_menu_r.move(
self.ui.widget_map.width() -
self.ui.widget_map_menu_r.width(), # right align with map panel
0)
# logo
self.ui.lb_gem_logo.move(self.width() - self.ui.lb_gem_logo.width(),
self.ui.lb_gem_logo.y())
@logUICall
@pyqtSlot()
def mapPan(self):
""" event handler for btn_pan - pan map """
self.canvas.unsetMapTool(self.toolInfo)
self.canvas.setMapTool(self.toolPan)
@logUICall
@pyqtSlot()
def mapZoomIn(self):
""" event handler for btn_zoom_in - zoom in on map """
self.canvas.unsetMapTool(self.toolInfo)
self.canvas.setMapTool(self.toolZoomIn)
@logUICall
@pyqtSlot()
def mapZoomOut(self):
""" event handler for btn_zoom_out - zoom out on map """
self.canvas.unsetMapTool(self.toolInfo)
self.canvas.setMapTool(self.toolZoomOut)
@logUICall
@pyqtSlot()
def mapZoomFull(self):
""" event handler for btn_zoom_full - zoom to full map """
self.canvas.zoomToFullExtent()
def checkRendering(self, changed):
self.canvas.setRenderFlag(True)
@logUICall
@pyqtSlot()
def stopRendering(self):
self.canvas.setRenderFlag(False)
@logUICall
@pyqtSlot()
def mapZoomLayer(self):
self.canvas.unsetMapTool(self.toolInfo)
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
self.zoomToLayer(
self.map_layers[self.LAYER_NAMES.index(cur_layer_name)])
@logUICall
@pyqtSlot()
def mapEditTheme(self):
""" event handler for btn_edit - identify item on map """
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
try:
cur_layer_idx = self.LAYER_NAMES.index(cur_layer_name)
# build layer render property Dialog for selected layer
dlg_render = QDialog()
dlg_render.setWindowTitle(
get_ui_string('widget.result.renderer.settings'))
dlg_render.setModal(True)
dlg_render.setFixedSize(530, 370)
dlg_render.renderer = QgsRendererV2PropertiesDialog(
self.map_layers[cur_layer_idx], self.style, True)
dlg_render.renderer.setParent(dlg_render)
dlg_render.renderer.setGeometry(QRect(10, 10, 510, 325))
dlg_render.buttonBox = QDialogButtonBox(dlg_render)
dlg_render.buttonBox.setGeometry(QRect(10, 335, 510, 25))
dlg_render.buttonBox.setStandardButtons(QDialogButtonBox.Cancel
| QDialogButtonBox.Ok)
dlg_render.buttonBox.accepted.connect(dlg_render.accept)
dlg_render.buttonBox.accepted.connect(dlg_render.renderer.onOK)
dlg_render.buttonBox.rejected.connect(dlg_render.reject)
dlg_render.setVisible(True)
# get user input and update renderer
answer = dlg_render.exec_()
if answer == QDialog.Accepted:
self.map_layer_renderer[cur_layer_idx] = None
self.map_layer_renderer[cur_layer_idx] = self.map_layers[
cur_layer_idx].rendererV2().clone()
self.canvas.refresh()
dlg_render.destroy()
del dlg_render
except Exception as err:
# thematic is not-critical, allow continue on exception
logUICall.log(str(err), logUICall.WARNING)
@logUICall
@pyqtSlot()
def searchFeature(self):
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
try:
cur_layer_idx = self.LAYER_NAMES.index(cur_layer_name)
layer = self.map_layers[cur_layer_idx]
fields = []
for fidx in layer.dataProvider().fields():
fields.append(layer.dataProvider().fields()[fidx].name())
dlg_search = DialogSearchFeature(fields)
answer = dlg_search.exec_()
if answer == QDialog.Accepted:
extent = self.findFeatureExtentByAttribute(
layer, dlg_search.attribute, dlg_search.value)
if extent is not None:
self.zoomToExtent(extent)
else:
logUICall.log(get_ui_string("widget.result.info.notfound"),
logUICall.WARNING)
dlg_search.destroy()
except Exception as err:
# thematic is not-critical, allow continue on exception
logUICall.log(str(err), logUICall.WARNING)
@logUICall
@pyqtSlot()
def mapIdentify(self):
"""
event handler for btn_info
This only enables map querying, method connected to canvasClicked signal does
the actual point-polygon query
"""
self.canvas.setMapTool(self.toolInfo)
@logUICall
@pyqtSlot()
def selectExportFile(self):
"""
event handler for btn_export_select_path
- open save file dialog box to select file name for export
"""
filename = QFileDialog.getSaveFileName(
self, get_ui_string("widget.result.export.file.open"), ".",
self.ui.cb_export_format.currentText())
if not filename.isNull():
self.ui.txt_export_select_path.setText(filename)
@logUICall
@pyqtSlot(str)
def exportFormatChanged(self, selected_val):
"""
event handler for cb_export_format
- update selected file after format change
"""
self.ui.txt_export_select_path.setText("")
self.export_format = self.EXPORT_FORMATS[str(selected_val)]
@logUICall
@pyqtSlot()
def exportData(self):
"""
event handler for btn_export
- do export data
"""
export_path = str(self.ui.txt_export_select_path.text())
if export_path == "":
logUICall.log(get_ui_string("app.error.path.is.null"),
logUICall.WARNING)
return
self.app.exportResults(self.export_format, export_path)
@logUICall
@pyqtSlot(QPoint, QObject)
def showInfo(self, point, mouseButton):
"""
event handler for toolInfo
@see QGIS tutorial for detail
point-polygon search on currently selected layer
"""
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
try:
cur_layer_idx = self.LAYER_NAMES.index(cur_layer_name)
cur_layer = self.map_layers[cur_layer_idx]
# if layer is not in same projection as map canvas
# need to project query point
if cur_layer.crs() != self.canvas.mapRenderer().destinationCrs():
transform = QgsCoordinateTransform(
self.canvas.mapRenderer().destinationCrs(),
cur_layer.crs())
point = transform.transform(point)
# do query
provider = cur_layer.dataProvider()
provider.rewind()
feature = QgsFeature()
colonIndexes = provider.attributeIndexes()
# search using point as center of rectangle polygon
search_buffer_x = self.canvas.extent().width(
) * self.SEARCH_BUFFER / self.canvas.width()
search_buffer_y = self.canvas.extent().height(
) * self.SEARCH_BUFFER / self.canvas.height()
provider.select(
colonIndexes,
QgsRectangle(point.x() - search_buffer_x,
point.y() - search_buffer_y,
point.x() + search_buffer_x,
point.y() + search_buffer_y), True)
# get selected and display in result detail dialog box
selected = []
while provider.nextFeature(feature):
# for polygons, only show geometry containing query point
if cur_layer.geometryType() == QGis.Polygon:
if feature.geometry(
) is not None and not feature.geometry().contains(point):
continue
selected.append(feature.attributeMap())
if len(selected) > 0:
# display result if exists
if cur_layer_idx == self.EXPOSURE:
self.dlgResultDetail.showExposureData(
provider.fields(), selected)
else:
self.dlgResultDetail.showInfoData(provider.fields(),
selected)
self.dlgResultDetail.exec_()
else:
logUICall.log(get_ui_string("widget.result.info.notfound"),
logUICall.WARNING)
except Exception as err:
# point-in-polygon search is not critical, continue on error
logUICall.log(str(err), logUICall.WARNING)
# public methods
###############################
def set_project(self, project):
''' set project to preview. force refresh view on set'''
self._project = project
if project is None:
return
self.refreshView()
self.canvas.zoomToFullExtent()
logUICall.log("Project preview initialized sucessfully",
logUICall.INFO)
def get_project(self):
return self._project
# property access to project
project = property(get_project, set_project)
def refreshView(self):
''' reload all QGIS layers in currently defined project '''
if self._project is None:
return
# display layers if exists
if self._project.fp_file is not None and exists(self._project.fp_file):
if self.map_layers[self.FOOTPRINT] is None or self.map_layers[
self.FOOTPRINT].source() != self._project.fp_file:
self.showDataLayer(
self.FOOTPRINT,
load_shapefile(self._project.fp_file, 'footprint'))
else:
self.removeDataLayer(self.FOOTPRINT)
if self._project.zone_file is not None and exists(
self._project.zone_file):
if self.map_layers[self.ZONES] is None or self.map_layers[
self.ZONES].source() != self._project.zone_file:
self.showDataLayer(
self.ZONES, load_shapefile(self._project.zone_file,
'zones'))
else:
self.removeDataLayer(self.ZONES)
if self._project.survey_file is not None and exists(
self._project.survey_file):
if getattr(self._project, 'survey', None) is None:
self._project.load_survey()
self.showDataLayer(self.SURVEY, self._project.survey)
else:
self.removeDataLayer(self.SURVEY)
if self._project.popgrid_file is not None and exists(
self._project.popgrid_file):
if getattr(self._project, 'popgrid', None) is None:
self.showDataLayer(
self.POP_GRID,
load_shapefile(self._project.popgrid_file, 'popgrid'))
else:
self.removeDataLayer(self.POP_GRID)
# set export options
for idx, export_format in enumerate(self.EXPORT_FORMATS.values()):
if export_format == self._project.export_type:
self.ui.cb_export_format.setCurrentIndex(idx)
self.ui.txt_export_select_path.setText(self._project.export_path)
# refreshResult contains refresh call to update all layers currently loaded
self.refreshResult()
def refreshResult(self):
''' reload result QGIS layer and data quality reports in currently defined project '''
exposure = getattr(self._project, 'exposure', None)
if exposure is not None:
self.showDataLayer(self.EXPOSURE, exposure)
has_result = True
else:
self.removeDataLayer(self.EXPOSURE)
has_result = False
if has_result:
# build quality report
report_lines = []
if self._project.operator_options.has_key("proc.extrapolation"):
proc_option = self._project.operator_options[
"proc.extrapolation"]
if proc_option == ExtrapolateOptions.RandomWalk:
proc_method = get_ui_string(
"widget.result.dq.method",
get_ui_string("dlg.options.ep.random"))
elif proc_option == ExtrapolateOptions.Fraction:
proc_method = get_ui_string(
"widget.result.dq.method",
get_ui_string("dlg.options.ep.fraction"))
elif proc_option == ExtrapolateOptions.FractionRounded:
proc_method = get_ui_string(
"widget.result.dq.method",
get_ui_string("dlg.options.ep.fraction.rounded"))
else:
proc_method = get_ui_string(
"widget.result.dq.method",
get_ui_string("dlg.options.ep.random"))
report_lines.append(proc_method)
report_lines.append('')
# total tests
report_lines.append(
get_ui_string('widget.result.dq.total_tests',
len(self._project.quality_reports.keys())))
report_lines.append('')
# detail for each test
for key, report in self._project.quality_reports.iteritems():
report_lines.append(
get_ui_string('widget.result.dq.tests.%s' % key))
for title, value in report.iteritems():
report_lines.append(
get_ui_string(
'widget.result.dq.tests.%s.%s' % (key, title),
value))
report_lines.append('')
self.ui.txt_dq_test_details.setText("\n".join(report_lines))
self.ui.btn_export.setEnabled(has_result)
self.ui.widget_dq_test.setVisible(has_result)
self.ui.txt_export_select_path.setEnabled(has_result)
self.ui.btn_export_select_path.setEnabled(has_result)
self.ui.cb_export_format.setEnabled(has_result)
# this call refresh all layers currently loaded
self.refreshLayers()
@logUICall
def closeResult(self):
''' remove from map result QGIS layer and reset quality report display '''
self.canvas.setLayerSet(
[]
) # call necessary to remove all layers to avoid disconnect errors
self.removeDataLayer(self.EXPOSURE)
self.refreshLayers()
self.ui.txt_dq_test_details.setText("")
@logUICall
def closeAll(self):
''' remove from map all QGIS layer in currently defined project '''
self.ui.cb_layer_selector.clear()
try:
self.canvas.setLayerSet(
[]
) # call necessary to remove all layers to avoid disconnect errors
for i in range(5):
self.removeDataLayer(i)
self.ui.txt_dq_test_details.setText("")
self.refreshLayers()
except:
pass # exception will is thrown when registry is empty
# internal helper methods
###############################
def showDataLayer(self, index, layer):
""" display given QGIS layer on map """
try:
# add to QGIS registry and refresh view
if self.map_layers[index] is not None:
self.removeDataLayer(index)
self.map_layers[index] = layer
self.registry.addMapLayer(layer)
layer.setRendererV2(self.map_layer_renderer[index])
except:
pass
def removeDataLayer(self, index):
""" remove from map the layer identified with index """
layer = self.map_layers[index]
self.map_layers[index] = None
if layer is not None:
try:
self.registry.removeMapLayer(layer.getLayerID(), False)
del layer
except:
pass # do nothing if it fails. probably already deleted
def findFeatureExtentByAttribute(self, layer, field, value):
"""
find extent of all objects in QGIS layer matching condition "field=value"
"""
fidx = layer_field_index(layer, field)
if fidx == -1:
return None
xmin, xmax, ymin, ymax = 180, -180, 90, -90
extent = QgsRectangle(xmin, ymin, xmax, ymax)
need_transform = layer.crs() != self.canvas.mapRenderer(
).destinationCrs()
if need_transform:
transform = QgsCoordinateTransform(
layer.crs(),
self.canvas.mapRenderer().destinationCrs())
for feature in layer_features(layer):
if str(value) == feature.attributeMap()[fidx].toString():
f_extent = feature.geometry().boundingBox()
if need_transform:
f_extent = transform.transform(f_extent)
xmin = min(f_extent.xMinimum(), xmin)
xmax = max(f_extent.xMaximum(), xmax)
ymin = min(f_extent.yMinimum(), ymin)
ymax = max(f_extent.yMaximum(), ymax)
extent.set(xmin, ymin, xmax, ymax)
return extent
def zoomToLayer(self, layer):
""" zoom canvas to extent of given layer """
try:
lyr_extent = layer.extent()
if layer.crs() != self.canvas.mapRenderer().destinationCrs():
transform = QgsCoordinateTransform(
layer.crs(),
self.canvas.mapRenderer().destinationCrs())
lyr_extent = transform.transform(lyr_extent)
self.zoomToExtent(lyr_extent)
except:
pass
def zoomToExtent(self, extent):
""" zoom canvas to given extent """
try:
self.canvas.setExtent(extent)
self.canvas.zoomByFactor(1.1)
except:
self.mapZoomFull()
def refreshLayers(self):
""" refresh all layers in canvas """
# add each layer according to order
layerSet = []
self.ui.cb_layer_selector.clear()
for idx, lyr in enumerate(self.map_layers):
if lyr is not None:
layerSet.append(QgsMapCanvasLayer(lyr))
self.ui.cb_layer_selector.addItem(self.LAYER_NAMES[idx])
if len(layerSet) > 0:
self.canvas.setLayerSet(layerSet)
class WidgetResult(Ui_widgetResult, QWidget):
"""
Widget (Panel) for result review
"""
''' buffer around clicked point for point in polygon query '''
SEARCH_BUFFER = 20.0
''' supported export formats '''
EXPORT_FORMATS = {
get_ui_string("app.extension.shapefile"):ExportTypes.Shapefile,
#get_ui_string("app.extension.kml"):ExportTypes.KML,
#get_ui_string("app.extension.nrml"):ExportTypes.NRML,
get_ui_string("app.extension.csv"):ExportTypes.CSV,
};
''' enumeration of Layer to be previewed '''
EXPOSURE, SURVEY, POP_GRID, FOOTPRINT, ZONES = range(5);
''' name for Layer to be previewed '''
LAYER_NAMES = [
get_ui_string("widget.result.layer.exposure"),
get_ui_string("widget.result.layer.survey"),
get_ui_string("widget.result.layer.popgrid"),
get_ui_string("widget.result.layer.footprint"),
get_ui_string("widget.result.layer.zones"),
];
LAYER_STYLES = [
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="******" class="SimpleLine" locked="0"><prop k="capstyle" v="square"/><prop k="color" v="0,0,0,255"/><prop k="customdash" v="5;2"/><prop k="joinstyle" v="bevel"/><prop k="offset" v="0"/><prop k="penstyle" v="solid"/><prop k="use_custom_dash" v="0"/><prop k="width" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="marker" name="0"><layer pass="******" class="SimpleMarker" locked="0"><prop k="angle" v="0"/><prop k="color" v="0,0,255,255"/><prop k="color_border" v="0,0,255,255"/><prop k="name" v="circle"/><prop k="offset" v="0,0"/><prop k="size" v="2"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="marker" name="0"><layer pass="******" class="SimpleMarker" locked="0"><prop k="angle" v="0"/><prop k="color" v="0,255,0,255"/><prop k="color_border" v="0,255,0,255"/><prop k="name" v="rectangle"/><prop k="offset" v="0,0"/><prop k="size" v="4"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="******" class="SimpleFill" locked="0"><prop k="color" v="170,250,170,255"/><prop k="color_border" v="0,0,0,255"/><prop k="offset" v="0,0"/><prop k="style" v="solid"/><prop k="style_border" v="solid"/><prop k="width_border" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
'<!DOCTYPE renderer><renderer-v2 symbollevels="0" type="singleSymbol"><symbols><symbol outputUnit="MM" alpha="1" type="fill" name="0"><layer pass="******" class="SimpleFill" locked="0"><prop k="color" v="211,211,158,200"/><prop k="color_border" v="0,0,0,255"/><prop k="offset" v="0,0"/><prop k="style" v="solid"/><prop k="style_border" v="solid"/><prop k="width_border" v="0.26"/></layer></symbol></symbols><rotation field=""/><sizescale field=""/></renderer-v2>',
]
# constructor / destructor
###############################
def __init__(self, app):
"""
constructor
- initialize UI elements
- connect UI elements to callback
"""
super(WidgetResult, self).__init__()
self.ui = Ui_widgetResult()
self.ui.setupUi(self)
# create canvas
self.canvas = QgsMapCanvas(self.ui.widget_map)
self.canvas.setGeometry(
0, # x
self.ui.widget_map_menu_l.x()+self.ui.widget_map_menu_l.height(), # y
self.ui.widget_map.width() - 2*UI_PADDING, # width
self.ui.widget_map.width() - 2*UI_PADDING # height
)
self.canvas.setCanvasColor(Qt.white)
self.canvas.enableAntiAliasing(True)
self.canvas.mapRenderer().setProjectionsEnabled(True)
self.canvas.mapRenderer().setDestinationCrs(QgsCoordinateReferenceSystem(4326, QgsCoordinateReferenceSystem.PostgisCrsId))
self.canvas.zoomNextStatusChanged.connect(self.checkRendering)
self.canvas.xyCoordinates.connect(self.currentLocation)
self.registry = QgsMapLayerRegistry.instance()
self.map_layers = [None] * len(self.LAYER_NAMES)
self.map_layer_renderer = [None] * len(self.LAYER_NAMES)
for idx, str_style in enumerate(self.LAYER_STYLES):
rdoc = QDomDocument("renderer")
rdoc.setContent(str_style)
self.map_layer_renderer[idx] = QgsFeatureRendererV2.load(rdoc.firstChild().toElement())
# populate export list
self.ui.cb_export_format.clear()
for export_format in self.EXPORT_FORMATS.keys():
self.ui.cb_export_format.addItem(export_format)
# style object required for QgsRendererV2PropertiesDialog
self.style = QgsStyleV2()
# 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
self.toolInfo = QgsMapToolEmitPoint(self.canvas)
self.toolInfo.canvasClicked.connect(self.showInfo)
self.canvas.setMapTool(self.toolPan)
# additional
self.dlgResultDetail = DialogResult()
self.dlgResultDetail.setModal(True)
# set link to application main controller
self.app = app
# reset project
self._project = None
# default export setting
self.export_format = ExportTypes.Shapefile
# connect slots (ui event)
self.ui.btn_zoom_full.clicked.connect(self.mapZoomFull)
self.ui.btn_zoom_in.clicked.connect(self.mapZoomIn)
self.ui.btn_zoom_out.clicked.connect(self.mapZoomOut)
self.ui.btn_stop.clicked.connect(self.stopRendering)
self.ui.btn_zoom_layer.clicked.connect(self.mapZoomLayer)
self.ui.btn_pan.clicked.connect(self.mapPan)
self.ui.btn_theme.clicked.connect(self.mapEditTheme)
self.ui.btn_info.clicked.connect(self.mapIdentify)
self.ui.btn_zoom_to_feature.clicked.connect(self.searchFeature)
self.ui.cb_export_format.currentIndexChanged[str].connect(self.exportFormatChanged)
self.ui.btn_export.clicked.connect(self.exportData)
self.ui.btn_export_select_path.clicked.connect(self.selectExportFile)
@pyqtSlot(QgsPoint)
def currentLocation(self, point):
self.app.updateMapLocation(point.x(),point.y())
#self.canvas.mouseMoveEvent(mouseEvent)
# UI event handling calls (Qt slots)
###############################
@pyqtSlot(QObject)
def resizeEvent(self, event):
""" handle window resize """
# find left coordinate for right side panels
x_right_side = self.width()-self.ui.widget_export.width()-UI_PADDING
# adjust right side panels
self.ui.widget_export.move(x_right_side, self.ui.widget_map.y()+30)
self.ui.widget_dq_test.move(x_right_side, self.ui.widget_export.y()+self.ui.widget_export.height()+UI_PADDING)
# adjust map panel (left side)
self.ui.widget_map.resize(x_right_side-UI_PADDING, self.height()-2*UI_PADDING)
# adjust map canvas within the map panel
map_top = self.ui.widget_map_menu_l.x()+self.ui.widget_map_menu_l.height()+UI_PADDING
self.canvas.resize(
x_right_side-UI_PADDING, # same width as self.ui.widget_map
self.ui.widget_map.height()-map_top-2*UI_PADDING) # height
# adjust map menu
self.ui.widget_map_menu_r.move(
self.ui.widget_map.width()-self.ui.widget_map_menu_r.width(), # right align with map panel
0)
# logo
self.ui.lb_gem_logo.move(self.width()-self.ui.lb_gem_logo.width(), self.ui.lb_gem_logo.y())
@logUICall
@pyqtSlot()
def mapPan(self):
""" event handler for btn_pan - pan map """
self.canvas.unsetMapTool(self.toolInfo)
self.canvas.setMapTool(self.toolPan)
@logUICall
@pyqtSlot()
def mapZoomIn(self):
""" event handler for btn_zoom_in - zoom in on map """
self.canvas.unsetMapTool(self.toolInfo)
self.canvas.setMapTool(self.toolZoomIn)
@logUICall
@pyqtSlot()
def mapZoomOut(self):
""" event handler for btn_zoom_out - zoom out on map """
self.canvas.unsetMapTool(self.toolInfo)
self.canvas.setMapTool(self.toolZoomOut)
@logUICall
@pyqtSlot()
def mapZoomFull(self):
""" event handler for btn_zoom_full - zoom to full map """
self.canvas.zoomToFullExtent()
def checkRendering(self, changed):
self.canvas.setRenderFlag(True)
@logUICall
@pyqtSlot()
def stopRendering(self):
self.canvas.setRenderFlag(False)
@logUICall
@pyqtSlot()
def mapZoomLayer(self):
self.canvas.unsetMapTool(self.toolInfo)
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
self.zoomToLayer(self.map_layers[self.LAYER_NAMES.index(cur_layer_name)])
@logUICall
@pyqtSlot()
def mapEditTheme(self):
""" event handler for btn_edit - identify item on map """
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
try:
cur_layer_idx = self.LAYER_NAMES.index(cur_layer_name)
# build layer render property Dialog for selected layer
dlg_render = QDialog()
dlg_render.setWindowTitle(get_ui_string('widget.result.renderer.settings'))
dlg_render.setModal(True)
dlg_render.setFixedSize(530, 370)
dlg_render.renderer = QgsRendererV2PropertiesDialog(self.map_layers[cur_layer_idx], self.style, True)
dlg_render.renderer.setParent(dlg_render)
dlg_render.renderer.setGeometry(QRect(10, 10, 510, 325))
dlg_render.buttonBox = QDialogButtonBox(dlg_render)
dlg_render.buttonBox.setGeometry(QRect(10, 335, 510, 25))
dlg_render.buttonBox.setStandardButtons(QDialogButtonBox.Cancel|QDialogButtonBox.Ok)
dlg_render.buttonBox.accepted.connect(dlg_render.accept)
dlg_render.buttonBox.accepted.connect(dlg_render.renderer.onOK)
dlg_render.buttonBox.rejected.connect(dlg_render.reject)
dlg_render.setVisible(True)
# get user input and update renderer
answer = dlg_render.exec_()
if answer == QDialog.Accepted:
self.map_layer_renderer[cur_layer_idx] = None
self.map_layer_renderer[cur_layer_idx] = self.map_layers[cur_layer_idx].rendererV2().clone()
self.canvas.refresh()
dlg_render.destroy()
del dlg_render
except Exception as err:
# thematic is not-critical, allow continue on exception
logUICall.log(str(err), logUICall.WARNING)
@logUICall
@pyqtSlot()
def searchFeature(self):
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
try:
cur_layer_idx = self.LAYER_NAMES.index(cur_layer_name)
layer = self.map_layers[cur_layer_idx]
fields = []
for fidx in layer.dataProvider().fields():
fields.append(layer.dataProvider().fields()[fidx].name())
dlg_search = DialogSearchFeature(fields)
answer = dlg_search.exec_()
if answer == QDialog.Accepted:
extent = self.findFeatureExtentByAttribute(layer, dlg_search.attribute, dlg_search.value)
if extent is not None:
self.zoomToExtent(extent)
else:
logUICall.log(get_ui_string("widget.result.info.notfound"), logUICall.WARNING)
dlg_search.destroy()
except Exception as err:
# thematic is not-critical, allow continue on exception
logUICall.log(str(err), logUICall.WARNING)
@logUICall
@pyqtSlot()
def mapIdentify(self):
"""
event handler for btn_info
This only enables map querying, method connected to canvasClicked signal does
the actual point-polygon query
"""
self.canvas.setMapTool(self.toolInfo)
@logUICall
@pyqtSlot()
def selectExportFile(self):
"""
event handler for btn_export_select_path
- open save file dialog box to select file name for export
"""
filename = QFileDialog.getSaveFileName(self,
get_ui_string("widget.result.export.file.open"),
".",
self.ui.cb_export_format.currentText())
if not filename.isNull():
self.ui.txt_export_select_path.setText(filename)
@logUICall
@pyqtSlot(str)
def exportFormatChanged(self, selected_val):
"""
event handler for cb_export_format
- update selected file after format change
"""
self.ui.txt_export_select_path.setText("")
self.export_format = self.EXPORT_FORMATS[str(selected_val)]
@logUICall
@pyqtSlot()
def exportData(self):
"""
event handler for btn_export
- do export data
"""
export_path = str(self.ui.txt_export_select_path.text())
if export_path == "":
logUICall.log(get_ui_string("app.error.path.is.null"), logUICall.WARNING)
return
self.app.exportResults(self.export_format, export_path)
@logUICall
@pyqtSlot(QPoint, QObject)
def showInfo(self, point, mouseButton):
"""
event handler for toolInfo
@see QGIS tutorial for detail
point-polygon search on currently selected layer
"""
cur_layer_name = self.ui.cb_layer_selector.currentText()
if cur_layer_name.isEmpty():
return
try:
cur_layer_idx = self.LAYER_NAMES.index(cur_layer_name)
cur_layer = self.map_layers[cur_layer_idx]
# if layer is not in same projection as map canvas
# need to project query point
if cur_layer.crs() != self.canvas.mapRenderer().destinationCrs():
transform = QgsCoordinateTransform(self.canvas.mapRenderer().destinationCrs(), cur_layer.crs())
point = transform.transform(point)
# do query
provider = cur_layer.dataProvider()
provider.rewind()
feature = QgsFeature()
colonIndexes = provider.attributeIndexes()
# search using point as center of rectangle polygon
search_buffer_x = self.canvas.extent().width() * self.SEARCH_BUFFER / self.canvas.width()
search_buffer_y = self.canvas.extent().height() * self.SEARCH_BUFFER / self.canvas.height()
provider.select(colonIndexes,
QgsRectangle(point.x()-search_buffer_x,
point.y()-search_buffer_y,
point.x()+search_buffer_x,
point.y()+search_buffer_y),
True)
# get selected and display in result detail dialog box
selected = []
while provider.nextFeature(feature):
# for polygons, only show geometry containing query point
if cur_layer.geometryType() == QGis.Polygon:
if feature.geometry() is not None and not feature.geometry().contains (point):
continue
selected.append(feature.attributeMap())
if len(selected)>0:
# display result if exists
if cur_layer_idx == self.EXPOSURE:
self.dlgResultDetail.showExposureData(provider.fields(), selected)
else:
self.dlgResultDetail.showInfoData(provider.fields(), selected)
self.dlgResultDetail.exec_()
else:
logUICall.log(get_ui_string("widget.result.info.notfound"), logUICall.WARNING)
except Exception as err:
# point-in-polygon search is not critical, continue on error
logUICall.log(str(err), logUICall.WARNING)
# public methods
###############################
def set_project(self, project):
''' set project to preview. force refresh view on set'''
self._project = project
if project is None:
return
self.refreshView()
self.canvas.zoomToFullExtent()
logUICall.log("Project preview initialized sucessfully", logUICall.INFO)
def get_project(self):
return self._project
# property access to project
project = property(get_project, set_project)
def refreshView(self):
''' reload all QGIS layers in currently defined project '''
if self._project is None:
return
# display layers if exists
if self._project.fp_file is not None and exists(self._project.fp_file):
if self.map_layers[self.FOOTPRINT] is None or self.map_layers[self.FOOTPRINT].source() != self._project.fp_file:
self.showDataLayer(self.FOOTPRINT, load_shapefile(self._project.fp_file, 'footprint'))
else:
self.removeDataLayer(self.FOOTPRINT)
if self._project.zone_file is not None and exists(self._project.zone_file):
if self.map_layers[self.ZONES] is None or self.map_layers[self.ZONES].source() != self._project.zone_file:
self.showDataLayer(self.ZONES, load_shapefile(self._project.zone_file, 'zones'))
else:
self.removeDataLayer(self.ZONES)
if self._project.survey_file is not None and exists(self._project.survey_file):
if getattr(self._project, 'survey', None) is None:
self._project.load_survey()
self.showDataLayer(self.SURVEY, self._project.survey)
else:
self.removeDataLayer(self.SURVEY)
if self._project.popgrid_file is not None and exists(self._project.popgrid_file):
if getattr(self._project, 'popgrid', None) is None:
self.showDataLayer(self.POP_GRID, load_shapefile(self._project.popgrid_file, 'popgrid'))
else:
self.removeDataLayer(self.POP_GRID)
# set export options
for idx, export_format in enumerate(self.EXPORT_FORMATS.values()):
if export_format == self._project.export_type:
self.ui.cb_export_format.setCurrentIndex(idx)
self.ui.txt_export_select_path.setText(self._project.export_path)
# refreshResult contains refresh call to update all layers currently loaded
self.refreshResult()
def refreshResult(self):
''' reload result QGIS layer and data quality reports in currently defined project '''
exposure = getattr(self._project, 'exposure', None)
if exposure is not None:
self.showDataLayer(self.EXPOSURE, exposure)
has_result = True
else:
self.removeDataLayer(self.EXPOSURE)
has_result = False
if has_result:
# build quality report
report_lines = []
if self._project.operator_options.has_key("proc.extrapolation"):
proc_option = self._project.operator_options["proc.extrapolation"]
if proc_option == ExtrapolateOptions.RandomWalk:
proc_method = get_ui_string("widget.result.dq.method", get_ui_string("dlg.options.ep.random"))
elif proc_option == ExtrapolateOptions.Fraction:
proc_method = get_ui_string("widget.result.dq.method", get_ui_string("dlg.options.ep.fraction"))
elif proc_option == ExtrapolateOptions.FractionRounded:
proc_method = get_ui_string("widget.result.dq.method", get_ui_string("dlg.options.ep.fraction.rounded"))
else:
proc_method = get_ui_string("widget.result.dq.method", get_ui_string("dlg.options.ep.random"))
report_lines.append(proc_method)
report_lines.append('')
# total tests
report_lines.append(get_ui_string('widget.result.dq.total_tests', len(self._project.quality_reports.keys())))
report_lines.append('')
# detail for each test
for key, report in self._project.quality_reports.iteritems():
report_lines.append(get_ui_string('widget.result.dq.tests.%s' % key))
for title, value in report.iteritems():
report_lines.append( get_ui_string('widget.result.dq.tests.%s.%s' % (key, title), value) )
report_lines.append('')
self.ui.txt_dq_test_details.setText("\n".join(report_lines))
self.ui.btn_export.setEnabled(has_result)
self.ui.widget_dq_test.setVisible(has_result)
self.ui.txt_export_select_path.setEnabled(has_result)
self.ui.btn_export_select_path.setEnabled(has_result)
self.ui.cb_export_format.setEnabled(has_result)
# this call refresh all layers currently loaded
self.refreshLayers()
@logUICall
def closeResult(self):
''' remove from map result QGIS layer and reset quality report display '''
self.canvas.setLayerSet([]) # call necessary to remove all layers to avoid disconnect errors
self.removeDataLayer(self.EXPOSURE)
self.refreshLayers()
self.ui.txt_dq_test_details.setText("")
@logUICall
def closeAll(self):
''' remove from map all QGIS layer in currently defined project '''
self.ui.cb_layer_selector.clear()
try:
self.canvas.setLayerSet([]) # call necessary to remove all layers to avoid disconnect errors
for i in range(5):
self.removeDataLayer(i)
self.ui.txt_dq_test_details.setText("")
self.refreshLayers()
except:
pass # exception will is thrown when registry is empty
# internal helper methods
###############################
def showDataLayer(self, index, layer):
""" display given QGIS layer on map """
try:
# add to QGIS registry and refresh view
if self.map_layers[index] is not None:
self.removeDataLayer(index)
self.map_layers[index] = layer
self.registry.addMapLayer(layer)
layer.setRendererV2(self.map_layer_renderer[index])
except:
pass
def removeDataLayer(self, index):
""" remove from map the layer identified with index """
layer = self.map_layers[index]
self.map_layers[index] = None
if layer is not None:
try:
self.registry.removeMapLayer(layer.getLayerID(), False)
del layer
except:
pass # do nothing if it fails. probably already deleted
def findFeatureExtentByAttribute(self, layer, field, value):
"""
find extent of all objects in QGIS layer matching condition "field=value"
"""
fidx = layer_field_index(layer, field)
if fidx == -1:
return None
xmin, xmax, ymin, ymax = 180, -180, 90, -90
extent = QgsRectangle(xmin, ymin, xmax, ymax)
need_transform = layer.crs() != self.canvas.mapRenderer().destinationCrs()
if need_transform:
transform = QgsCoordinateTransform(layer.crs(), self.canvas.mapRenderer().destinationCrs())
for feature in layer_features(layer):
if str(value) == feature.attributeMap()[fidx].toString():
f_extent = feature.geometry().boundingBox()
if need_transform:
f_extent = transform.transform(f_extent)
xmin = min(f_extent.xMinimum(), xmin)
xmax = max(f_extent.xMaximum(), xmax)
ymin = min(f_extent.yMinimum(), ymin)
ymax = max(f_extent.yMaximum(), ymax)
extent.set (xmin, ymin, xmax, ymax)
return extent
def zoomToLayer(self, layer):
""" zoom canvas to extent of given layer """
try:
lyr_extent = layer.extent()
if layer.crs() != self.canvas.mapRenderer().destinationCrs():
transform = QgsCoordinateTransform(layer.crs(), self.canvas.mapRenderer().destinationCrs())
lyr_extent = transform.transform(lyr_extent)
self.zoomToExtent(lyr_extent)
except:
pass
def zoomToExtent(self, extent):
""" zoom canvas to given extent """
try:
self.canvas.setExtent(extent)
self.canvas.zoomByFactor(1.1)
except:
self.mapZoomFull()
def refreshLayers(self):
""" refresh all layers in canvas """
# add each layer according to order
layerSet = []
self.ui.cb_layer_selector.clear()
for idx, lyr in enumerate(self.map_layers):
if lyr is not None:
layerSet.append(QgsMapCanvasLayer(lyr))
self.ui.cb_layer_selector.addItem(self.LAYER_NAMES[idx])
if len(layerSet) > 0: