def testReadWrite(self):
p = QgsProjectViewSettings()
self.assertFalse(p.mapScales())
self.assertFalse(p.useProjectScales())
doc = QDomDocument("testdoc")
elem = p.writeXml(doc, QgsReadWriteContext())
p2 = QgsProjectViewSettings()
spy = QSignalSpy(p2.mapScalesChanged)
self.assertTrue(p2.readXml(elem, QgsReadWriteContext()))
self.assertFalse(p2.mapScales())
self.assertFalse(p2.useProjectScales())
self.assertEqual(len(spy), 0)
self.assertTrue(p2.defaultViewExtent().isNull())
p.setUseProjectScales(True)
p.setMapScales([56, 78, 99])
p.setDefaultViewExtent(QgsReferencedRectangle(QgsRectangle(1, 2, 3, 4), QgsCoordinateReferenceSystem("EPSG:3857")))
elem = p.writeXml(doc, QgsReadWriteContext())
p2 = QgsProjectViewSettings()
spy = QSignalSpy(p2.mapScalesChanged)
self.assertTrue(p2.readXml(elem, QgsReadWriteContext()))
self.assertEqual(p2.mapScales(), [99.0, 78.0, 56.0])
self.assertTrue(p2.useProjectScales())
self.assertEqual(len(spy), 1)
self.assertEqual(p2.defaultViewExtent(), QgsReferencedRectangle(QgsRectangle(1, 2, 3, 4), QgsCoordinateReferenceSystem("EPSG:3857")))
def testMapScales(self):
p = QgsProjectViewSettings()
self.assertFalse(p.mapScales())
self.assertFalse(p.useProjectScales())
spy = QSignalSpy(p.mapScalesChanged)
p.setMapScales([])
self.assertEqual(len(spy), 0)
p.setUseProjectScales(False)
self.assertEqual(len(spy), 0)
p.setMapScales([5000, 6000, 3000, 4000])
# scales must be sorted
self.assertEqual(p.mapScales(), [6000.0, 5000.0, 4000.0, 3000.0])
self.assertEqual(len(spy), 1)
p.setMapScales([5000, 6000, 3000, 4000])
self.assertEqual(len(spy), 1)
self.assertEqual(p.mapScales(), [6000.0, 5000.0, 4000.0, 3000.0])
p.setMapScales([5000, 6000, 3000, 4000, 1000])
self.assertEqual(len(spy), 2)
self.assertEqual(p.mapScales(),
[6000.0, 5000.0, 4000.0, 3000.0, 1000.0])
p.setUseProjectScales(True)
self.assertEqual(len(spy), 3)
p.setUseProjectScales(True)
self.assertEqual(len(spy), 3)
p.setUseProjectScales(False)
self.assertEqual(len(spy), 4)
p.setUseProjectScales(True)
p.setMapScales([5000, 6000, 3000, 4000])
self.assertEqual(len(spy), 6)
p.reset()
self.assertEqual(len(spy), 7)
self.assertFalse(p.mapScales())
self.assertFalse(p.useProjectScales())