def currentRowChanged(self, selected, deselected):
indexes = self.annotationView.selectedIndexes()
if len(indexes) == 0:
return
rowIndex = indexes[0].row()
targetLayer = None
for node in QgsProject.instance().layerTreeRoot().findLayers():
layer = node.layer()
if isinstance(layer, QgsRasterLayer) and layer.dataProvider(
).dataSourceUri() == self.model.item(rowIndex, 2).text():
targetLayer = layer
break
root = QgsProject.instance().layerTreeRoot()
if targetLayer is None:
file = QFileInfo(self.model.item(rowIndex, 2).text())
path = file.filePath()
base = file.baseName()
targetLayer = QgsRasterLayer(path, base)
QgsProject.instance().addMapLayer(targetLayer, False)
root.insertLayer(0, targetLayer)
else:
clonedLayer = targetLayer.clone()
QgsProject.instance().removeMapLayer(targetLayer.id())
QgsProject.instance().addMapLayer(clonedLayer)
targetLayer = clonedLayer
iface.setActiveLayer(targetLayer)
crs = QgsCoordinateReferenceSystem(self.model.item(rowIndex, 3).text())
QgsProject.instance().setCrs(crs)
iface.mapCanvas().setExtent(targetLayer.extent())
point1 = QgsPointXY(float(self.model.item(rowIndex, 8).text()),
float(self.model.item(rowIndex, 9).text()))
point2 = QgsPointXY(float(self.model.item(rowIndex, 8).text()),
float(self.model.item(rowIndex, 11).text()))
point3 = QgsPointXY(float(self.model.item(rowIndex, 10).text()),
float(self.model.item(rowIndex, 11).text()))
point4 = QgsPointXY(float(self.model.item(rowIndex, 10).text()),
float(self.model.item(rowIndex, 9).text()))
self.resetSelectionBand()
self.selectionBand.addPoint(point1, False)
self.selectionBand.addPoint(point2, False)
self.selectionBand.addPoint(point3, False)
self.selectionBand.addPoint(point4, True)
self.selectionBand.setOpacity(0.5)
self.selectionBand.show()
def testClone(self):
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
layer = QgsRasterLayer(myPath, myBaseName)
renderer = layer.renderer().clone()
renderer.setOpacity(33.3)
layer.setRenderer(renderer)
# clone layer
clone = layer.clone()
# generate xml from layer
layer_doc = QDomDocument("doc")
layer_elem = layer_doc.createElement("maplayer")
layer.writeLayerXml(layer_elem, layer_doc, QgsReadWriteContext())
# generate xml from clone
clone_doc = QDomDocument("doc")
clone_elem = clone_doc.createElement("maplayer")
clone.writeLayerXml(clone_elem, clone_doc, QgsReadWriteContext())
# replace id within xml of clone
clone_id_elem = clone_elem.firstChildElement("id")
clone_id_elem_patch = clone_doc.createElement("id")
clone_id_elem_patch_value = clone_doc.createTextNode(layer.id())
clone_id_elem_patch.appendChild(clone_id_elem_patch_value)
clone_elem.replaceChild(clone_id_elem_patch, clone_id_elem)
# update doc
clone_doc.appendChild(clone_elem)
layer_doc.appendChild(layer_elem)
# compare xml documents
self.assertEqual(layer_doc.toString(), clone_doc.toString())
def testClone(self):
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
layer = QgsRasterLayer(myPath, myBaseName)
renderer = layer.renderer().clone()
renderer.setOpacity(33.3)
layer.setRenderer(renderer)
# clone layer
clone = layer.clone()
# generate xml from layer
layer_doc = QDomDocument("doc")
layer_elem = layer_doc.createElement("maplayer")
layer.writeLayerXml(layer_elem, layer_doc, QgsReadWriteContext())
# generate xml from clone
clone_doc = QDomDocument("doc")
clone_elem = clone_doc.createElement("maplayer")
clone.writeLayerXml(clone_elem, clone_doc, QgsReadWriteContext())
# replace id within xml of clone
clone_id_elem = clone_elem.firstChildElement("id")
clone_id_elem_patch = clone_doc.createElement("id")
clone_id_elem_patch_value = clone_doc.createTextNode(layer.id())
clone_id_elem_patch.appendChild(clone_id_elem_patch_value)
clone_elem.replaceChild(clone_id_elem_patch, clone_id_elem)
# update doc
clone_doc.appendChild(clone_elem)
layer_doc.appendChild(layer_elem)
# compare xml documents
self.assertEqual(layer_doc.toString(), clone_doc.toString())
