SLD parsing: handling ogc:Literal within CssParameter

Author: jgrocha

tests/src/python/CMakeLists.txt

@@ -104,6 +104,7 @@ ADD_PYTHON_TEST(PyQgsSQLStatement test_qgssqlstatement.py)
 ADD_PYTHON_TEST(PyQgsStringStatisticalSummary test_qgsstringstatisticalsummary.py)
 ADD_PYTHON_TEST(PyQgsSymbolLayer test_qgssymbollayer.py)
 ADD_PYTHON_TEST(PyQgsSymbolLayerCreateSld test_qgssymbollayer_createsld.py)
+ADD_PYTHON_TEST(PyQgsSymbolLayerReadSld test_qgssymbollayer_readsld.py)
 ADD_PYTHON_TEST(PyQgsArrowSymbolLayer test_qgsarrowsymbollayer.py)
 ADD_PYTHON_TEST(PyQgsSymbolExpressionVariables test_qgssymbolexpressionvariables.py)
 ADD_PYTHON_TEST(PyQgsSyntacticSugar test_syntactic_sugar.py)

tests/src/python/test_qgssymbollayer_readsld.py

@@ -0,0 +1,75 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    test_qgssymbollayer_readsld.py
+    ---------------------
+    Date                 : January 2017
+    Copyright            : (C) 2017, Jorge Gustavo Rocha
+    Email                : jgr at di dot uminho dot pt
+***************************************************************************
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+***************************************************************************
+"""
+
+__author__ = 'Jorge Gustavo Rocha'
+__date__ = 'January 2017'
+__copyright__ = '(C) 2017, Jorge Gustavo Rocha'
+# This will get replaced with a git SHA1 when you do a git archive
+__revision__ = '$Format:%H$'
+
+import qgis  # NOQA
+
+import os
+from qgis.testing import start_app, unittest
+from qgis.core import (QgsVectorLayer,
+                       QgsProject,
+                       QgsRectangle,
+                       QgsMultiRenderChecker,
+                       QgsSingleSymbolRenderer,
+                       QgsFillSymbol,
+                       QgsFeatureRequest
+                       )
+from qgis.testing import unittest
+from qgis.testing.mocked import get_iface
+from utilities import unitTestDataPath
+
+start_app()
+
+TEST_DATA_DIR = unitTestDataPath()
+
+class TestQgsSymbolLayerReadSld(unittest.TestCase):
+
+    """
+    This class loads an SLD style and checks if the styling was properly applied
+    """
+
+    def setUp(self):
+        self.iface = get_iface()
+        myShpFile = os.path.join(TEST_DATA_DIR, 'streams.shp')
+        self.layer = QgsVectorLayer(myShpFile, 'streams', 'ogr')
+        mFilePath = os.path.join(TEST_DATA_DIR, 'symbol_layer/external_sld/simple_streams.sld')
+        self.layer.loadSldStyle(mFilePath)
+        self.props = self.layer.renderer().symbol().symbolLayers()[0].properties()
+
+    def testLineColor(self):
+        # stroke CSSParameter within ogc:Literal
+        # expected color is #003EBA, RGB 0,62,186
+        self.assertEqual(self.layer.renderer().symbol().symbolLayers()[0].color().name(), '#003eba')
+
+    def testLineWidth(self):
+        # stroke-width CSSParameter within ogc:Literal
+        self.assertEqual(self.props['line_width'], '2')
+
+    def testLineOpacity(self):
+        # stroke-opacity CSSParameter NOT within ogc:Literal
+        # stroke-opacity=0.1
+        self.assertEqual(self.props['line_color'], '0,62,186,25')
+
+if __name__ == '__main__':
+    unittest.main()

tests/testdata/streams.dbf

@@ -0,0 +1 @@
+PROJCS["NAD27 / UTM zone 13N", GEOGCS["NAD27", DATUM["North American Datum 1927", SPHEROID["Clarke 1866", 6378206.4, 294.9786982138982, AUTHORITY["EPSG","7008"]], TOWGS84[-4.2, 135.4, 181.9, 0.0, 0.0, 0.0, 0.0], AUTHORITY["EPSG","6267"]], PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]], UNIT["degree", 0.017453292519943295], AXIS["Geodetic longitude", EAST], AXIS["Geodetic latitude", NORTH], AUTHORITY["EPSG","4267"]], PROJECTION["Transverse Mercator", AUTHORITY["EPSG","9807"]], PARAMETER["central_meridian", -105.0], PARAMETER["latitude_of_origin", 0.0], PARAMETER["scale_factor", 0.9996],   PARAMETER["false_easting", 500000.0], PARAMETER["false_northing", 0.0], UNIT["m", 1.0], AXIS["Easting", EAST], AXIS["Northing", NORTH], AUTHORITY["EPSG","26713"]]

tests/testdata/streams.prj

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<StyledLayerDescriptor version="1.0.0" xmlns="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc"
+  xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd">
+  <NamedLayer>
+    <Name>Simple Streams</Name>
+    <UserStyle>
+
+      <Title>Default Styler for streams segments</Title>
+      <Abstract>Blue lines, 2px wide</Abstract>
+      <FeatureTypeStyle>
+        <FeatureTypeName>Feature</FeatureTypeName>
+        <Rule>
+          <Title>Streams</Title>
+          <LineSymbolizer>
+            <Stroke>
+              <CssParameter name="stroke">
+                <ogc:Literal>#003EBA</ogc:Literal>
+              </CssParameter>
+              <CssParameter name="stroke-width">
+                <ogc:Literal>2</ogc:Literal>
+              </CssParameter>
+              <CssParameter name="stroke-opacity">0.1</CssParameter>
+            </Stroke>
+          </LineSymbolizer>
+        </Rule>
+      </FeatureTypeStyle>
+    </UserStyle>
+  </NamedLayer>
+</StyledLayerDescriptor>