def positionToKml(self):
settings = QgsSettings()
altitude = settings.value('getools/pointAltitude', 0.0, float)
extrude = settings.value('getools/pointExtrude', False, bool)
altitudeMode = settings.value('getools/pointAltitudeMode',
'clampToGround', str)
tpl = None
with open(utils.templateFile('placemark.kml'), 'r',
encoding='utf-8') as f:
tpl = Template(f.read())
subst = {
'name':
utils.encodeForXml('Clicked position'),
'description':
utils.encodeForXml('Clicked position — ({})'.format(
self.data.toString(6))),
'extrude':
extrude,
'altitudeMode':
altitudeMode,
'coordinates':
'{},{},{}'.format(self.data.x(), self.data.y(), altitude),
}
self.fileName = os.path.normpath(utils.tempFileName('position.kml'))
with open(self.fileName, 'w', encoding='utf-8') as f:
f.write(tpl.substitute(subst))
return True
def rasterToKml(self):
if self.data.providerType() != 'gdal':
self.error = self.tr('Currently only GDAL rasters are supported.')
return False
settings = QgsSettings()
altitude = settings.value('getools/rasterAltitude', 0.0, float)
altitudeMode = settings.value('getools/rasterAltitudeMode',
'clampToGround', str)
exportRendered = settings.value('getools/rasterRendered', False, bool)
rasterFile = self.data.source()
kmlFile = utils.tempFileName('{}.kml'.format(
utils.safeLayerName(self.data.name())))
if exportRendered:
tmp = os.path.split(kmlFile)
rasterFile = os.path.join(
tmp[0], '{}.tif'.format(os.path.splitext(tmp[1])[0]))
result = self._exportRaster(rasterFile, False)
if not result:
return False
transform = QgsCoordinateTransform(self.data.crs(), GEO_CRS,
QgsProject.instance())
bbox = transform.transformBoundingBox(self.data.extent())
tpl = None
with open(utils.templateFile('raster.kml'), 'r',
encoding='utf-8') as f:
tpl = Template(f.read())
layerName = utils.encodeForXml(self.data.name())
subst = {
'name': layerName,
'description': 'QGIS raster — '.format(layerName),
'source': rasterFile,
'altitude': altitude,
'altitudeMode': altitudeMode,
'north': bbox.yMaximum(),
'south': bbox.yMinimum(),
'east': bbox.xMaximum(),
'west': bbox.xMinimum(),
'rotation': 0.0,
}
self.fileName = os.path.normpath(kmlFile)
with open(kmlFile, 'w', encoding='utf-8') as f:
f.write(tpl.substitute(subst))
return True
def _polygonsToKml(self):
settings = QgsSettings()
altitude = settings.value('getools/polygonAltitude', 0.0, float)
extrude = settings.value('getools/polygonExtrude', False, bool)
tessellate = settings.value('getools/polygonTessellate', False, bool)
altitudeMode = settings.value('getools/polygonAltitudeMode',
'clampToGround', str)
name = settings.value('getools/plygonName', '', str)
description = settings.value('getools/polygonDescription', '', str)
fields = self.data.fields()
idxName = fields.indexFromName(name)
idxDescription = fields.indexFromName(description)
overrideStyle = settings.value(
'QgsCollapsibleGroupBox/getools/grpPolygonStyle/checked', False,
bool)
if overrideStyle:
styleMap, style = defaultStyle(self.data)
else:
styleMap, style = kmlStyle(self.data)
if styleMap is None:
self.error = style
return False
layerName = utils.encodeForXml(self.data.name())
kmlFile = utils.tempFileName('{}.kml'.format(
utils.safeLayerName(self.data.name())))
with open(kmlFile, 'w', encoding='utf-8') as f:
f.write('<?xml version="1.0" encoding="UTF-8"?>\n')
f.write(
'<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2">\n'
)
f.write(' <Document>\n')
f.write(' <name>{}</name>\n'.format(layerName))
f.write(' <description>QGIS vector — {}</description>\n'.format(
layerName))
f.write('{}\n'.format(style))
request = QgsFeatureRequest()
request.setDestinationCrs(GEO_CRS,
QgsProject.instance().transformContext())
if self.onlySelected:
request.setFilterFids(self.data.selectedFeatureIds())
attrs = []
if idxName != -1:
attrs.append(idxName)
if idxDescription != -1:
attrs.append(idxDescription)
if len(attrs) > 0:
request.setSubsetOfAttributes(attrs)
for styleId, expression in styleMap.items():
if expression != 'all':
request.setFilterExpression(expression)
for feat in self.data.getFeatures(request):
geom = feat.geometry()
parts = geom.asGeometryCollection()
f.write(' <Placemark>\n')
if idxName != -1:
f.write(' <name>{}</name>\n'.format(feat[name]))
if idxDescription != -1:
f.write(' <description>{}</description>\n'.format(
feat[description]))
f.write(' <styleUrl>#{}</styleUrl>\n'.format(styleId))
geometry = []
for part in parts:
geometry.append(' <Polygon>\n')
geometry.append(
' <extrude>{}</extrude>\n'.format(extrude))
geometry.append(
' <tessellate>{}</tessellate>\n'.format(
tessellate))
geometry.append(
' <gx:altitudeMode>{}</gx:altitudeMode>\n'.
format(altitudeMode))
geometry.append(' <outerBoundaryIs>\n')
geometry.append(' <LinearRing>\n')
geometry.append(' <coordinates>\n')
polygon = part.constGet()
ring = polygon.exteriorRing()
for p in ring.points():
geometry.append(' {},{},{}\n'.format(
p.x(), p.y(),
p.z() if p.is3D() else altitude))
geometry.append(' </coordinates>\n')
geometry.append(' </LinearRing>\n')
geometry.append(' </outerBoundaryIs>\n')
for i in range(polygon.numInteriorRings()):
ring = polygon.interiorRing(i)
geometry.append(' <innerBoundaryIs>\n')
geometry.append(' <LinearRing>\n')
geometry.append(' <coordinates>\n')
for p in ring.points():
geometry.append(' {},{},{}\n'.format(
p.x(), p.y(),
p.z() if p.is3D() else altitude))
geometry.append(' </coordinates>\n')
geometry.append(' </LinearRing>\n')
geometry.append(' </innerBoundaryIs>\n')
geometry.append(' </Polygon>\n')
if geom.isMultipart():
f.write(' <MultiGeometry>\n')
f.write(''.join(geometry))
f.write(' </MultiGeometry>\n')
else:
f.write(''.join(geometry))
f.write(' </Placemark>\n')
f.write(' </Document>\n')
f.write('</kml>\n')
self.fileName = os.path.normpath(kmlFile)
return True