def append_MarkerLineSymbolLayer(symbol, layer: MarkerLineSymbolLayer,
context: Context):
"""
Appends a MarkerLineSymbolLayer to a symbol
"""
template = layer.template
# first work out total length of pattern
current_length = 0
for t in template.pattern_parts:
current_length += t[0]
current_length += t[1]
total_length = current_length * template.pattern_interval
marker = Symbol_to_QgsSymbol(layer.pattern_marker, context)
marker.setAngle(90)
current_offset_from_start = 0
for t in template.pattern_parts:
if t[0]:
# marker
line = QgsMarkerLineSymbolLayer(True)
start_marker = marker.clone()
start_marker.setAngle(start_marker.angle() - 90)
line.setSubSymbol(start_marker)
line.setOffset(-context.convert_size(layer.offset))
line.setOffsetUnit(context.units)
line.setInterval(context.convert_size(total_length))
line.setIntervalUnit(context.units)
line.setOffsetAlongLine(
context.convert_size(current_offset_from_start +
template.pattern_interval / 2))
line.setOffsetAlongLineUnit(context.units)
symbol.appendSymbolLayer(line)
current_offset_from_start += template.pattern_interval * t[0]
if t[1]:
# space
current_offset_from_start += template.pattern_interval * t[1]
if layer.decoration is not None:
append_Decorations(symbol, layer.decoration, context)
def testNoPoint(self):
s = QgsLineSymbol()
s.deleteSymbolLayer(0)
marker_line = QgsMarkerLineSymbolLayer(True)
marker_line.setPlacement(QgsTemplatedLineSymbolLayerBase.Interval)
marker_line.setOffsetAlongLine(1000)
marker_line.setIntervalUnit(QgsUnitTypes.RenderMapUnits)
marker = QgsSimpleMarkerSymbolLayer(QgsSimpleMarkerSymbolLayer.Circle, 4)
marker.setColor(QColor(255, 0, 0, 100))
marker.setStrokeStyle(Qt.NoPen)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
marker_line.setSubSymbol(marker_symbol)
line_symbol = QgsLineSymbol()
line_symbol.changeSymbolLayer(0, marker_line)
s.appendSymbolLayer(marker_line.clone())
g = QgsGeometry.fromWkt('LineString(0 0, 0 10, 10 10)')
rendered_image = self.renderGeometry(s, g)
assert self.imageCheck('markerline_none', 'markerline_none', rendered_image)
def testNoPoint(self):
s = QgsLineSymbol()
s.deleteSymbolLayer(0)
marker_line = QgsMarkerLineSymbolLayer(True)
marker_line.setPlacement(QgsTemplatedLineSymbolLayerBase.Interval)
marker_line.setOffsetAlongLine(1000)
marker_line.setIntervalUnit(QgsUnitTypes.RenderMapUnits)
marker = QgsSimpleMarkerSymbolLayer(QgsSimpleMarkerSymbolLayer.Circle, 4)
marker.setColor(QColor(255, 0, 0, 100))
marker.setStrokeStyle(Qt.NoPen)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
marker_line.setSubSymbol(marker_symbol)
line_symbol = QgsLineSymbol()
line_symbol.changeSymbolLayer(0, marker_line)
s.appendSymbolLayer(marker_line.clone())
g = QgsGeometry.fromWkt('LineString(0 0, 0 10, 10 10)')
rendered_image = self.renderGeometry(s, g)
assert self.imageCheck('markerline_none', 'markerline_none', rendered_image)