def exportJSONLayer(layer, eachPopup, precision, tmpFileName, exp_crs,
layerFileName, safeLayerName, minify, canvas):
cleanedLayer = writeTmpLayer(layer, eachPopup)
if is25d(layer, canvas):
provider = cleanedLayer.dataProvider()
provider.addAttributes([QgsField("height", QVariant.Double),
QgsField("wallColor", QVariant.String),
QgsField("roofColor", QVariant.String)])
cleanedLayer.updateFields()
fields = cleanedLayer.pendingFields()
renderer = layer.rendererV2()
renderContext = QgsRenderContext.fromMapSettings(
canvas.mapSettings())
feats = layer.getFeatures()
context = QgsExpressionContext()
context.appendScope(QgsExpressionContextUtils.layerScope(layer))
expression = QgsExpression('eval(@qgis_25d_height)')
heightField = fields.indexFromName("height")
wallField = fields.indexFromName("wallColor")
roofField = fields.indexFromName("roofColor")
renderer.startRender(renderContext, fields)
cleanedLayer.startEditing()
for feat in feats:
context.setFeature(feat)
height = expression.evaluate(context)
if isinstance(renderer, QgsCategorizedSymbolRendererV2):
classAttribute = renderer.classAttribute()
attrValue = feat.attribute(classAttribute)
catIndex = renderer.categoryIndexForValue(attrValue)
categories = renderer.categories()
symbol = categories[catIndex].symbol()
elif isinstance(renderer, QgsGraduatedSymbolRendererV2):
classAttribute = renderer.classAttribute()
attrValue = feat.attribute(classAttribute)
ranges = renderer.ranges()
for range in ranges:
if (attrValue >= range.lowerValue() and
attrValue <= range.upperValue()):
symbol = range.symbol().clone()
else:
symbol = renderer.symbolForFeature2(feat, renderContext)
wallColor = symbol.symbolLayer(1).subSymbol().color().name()
roofColor = symbol.symbolLayer(2).subSymbol().color().name()
cleanedLayer.changeAttributeValue(feat.id() + 1,
heightField, height)
cleanedLayer.changeAttributeValue(feat.id() + 1,
wallField, wallColor)
cleanedLayer.changeAttributeValue(feat.id() + 1,
roofField, roofColor)
cleanedLayer.commitChanges()
renderer.stopRender(renderContext)
writer = QgsVectorFileWriter
if precision != "maintain":
options = "COORDINATE_PRECISION=" + unicode(precision)
else:
options = ""
writer.writeAsVectorFormat(cleanedLayer, tmpFileName, 'utf-8', exp_crs,
'GeoJson', 0, layerOptions=[options])
with open(layerFileName, "w") as f2:
f2.write("var json_" + unicode(safeLayerName) + "=")
with open(tmpFileName, "r") as tmpFile:
for line in tmpFile:
if minify:
line = line.strip("\n\t ")
line = removeSpaces(line)
f2.write(line)
os.remove(tmpFileName)
fields = layer.pendingFields()
for field in fields:
exportImages(layer, field.name(), layerFileName)
def exportJSONLayer(layer, eachPopup, precision, tmpFileName, exp_crs,
layerFileName, safeLayerName, minify, canvas,
restrictToExtent, iface, extent):
cleanedLayer = writeTmpLayer(layer, eachPopup, restrictToExtent,
iface, extent)
if is25d(layer, canvas, restrictToExtent, extent):
provider = cleanedLayer.dataProvider()
provider.addAttributes([QgsField("height", QVariant.Double),
QgsField("wallColor", QVariant.String),
QgsField("roofColor", QVariant.String)])
cleanedLayer.updateFields()
fields = cleanedLayer.pendingFields()
renderer = layer.rendererV2()
renderContext = QgsRenderContext.fromMapSettings(
canvas.mapSettings())
feats = layer.getFeatures()
context = QgsExpressionContext()
context.appendScope(QgsExpressionContextUtils.layerScope(layer))
expression = QgsExpression('eval(@qgis_25d_height)')
heightField = fields.indexFromName("height")
wallField = fields.indexFromName("wallColor")
roofField = fields.indexFromName("roofColor")
renderer.startRender(renderContext, fields)
cleanedLayer.startEditing()
for feat in feats:
context.setFeature(feat)
height = expression.evaluate(context)
if isinstance(renderer, QgsCategorizedSymbolRendererV2):
classAttribute = renderer.classAttribute()
attrValue = feat.attribute(classAttribute)
catIndex = renderer.categoryIndexForValue(attrValue)
categories = renderer.categories()
symbol = categories[catIndex].symbol()
elif isinstance(renderer, QgsGraduatedSymbolRendererV2):
classAttribute = renderer.classAttribute()
attrValue = feat.attribute(classAttribute)
ranges = renderer.ranges()
for range in ranges:
if (attrValue >= range.lowerValue() and
attrValue <= range.upperValue()):
symbol = range.symbol().clone()
else:
symbol = renderer.symbolForFeature2(feat, renderContext)
wallColor = symbol.symbolLayer(1).subSymbol().color().name()
roofColor = symbol.symbolLayer(2).subSymbol().color().name()
cleanedLayer.changeAttributeValue(feat.id() + 1,
heightField, height)
cleanedLayer.changeAttributeValue(feat.id() + 1,
wallField, wallColor)
cleanedLayer.changeAttributeValue(feat.id() + 1,
roofField, roofColor)
cleanedLayer.commitChanges()
renderer.stopRender(renderContext)
writer = QgsVectorFileWriter
if precision != "maintain":
options = "COORDINATE_PRECISION=" + unicode(precision)
else:
options = ""
writer.writeAsVectorFormat(cleanedLayer, tmpFileName, 'utf-8', exp_crs,
'GeoJson', 0, layerOptions=[options])
with open(layerFileName, "w") as f2:
f2.write("var json_" + unicode(safeLayerName) + "=")
with open(tmpFileName, "r") as tmpFile:
for line in tmpFile:
if minify:
line = line.strip("\n\t ")
line = removeSpaces(line)
f2.write(line)
os.remove(tmpFileName)
fields = layer.pendingFields()
for field in fields:
exportImages(layer, field.name(), layerFileName)