def testRenderLineLayerDisabled(self):
""" test that rendering a line symbol with disabled layer works"""
layer = QgsSimpleLineSymbolLayer()
layer.setEnabled(False)
symbol = QgsLineSymbol()
symbol.changeSymbolLayer(0, layer)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
geom = QgsGeometry.fromWkt('LineString (0 0,3 4,4 3)')
f = QgsFeature()
f.setGeometry(geom)
extent = geom.constGet().boundingBox()
# buffer extent by 10%
extent = extent.buffered((extent.height() + extent.width()) / 20.0)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
image.fill(QColor(255, 255, 255))
symbol.startRender(context)
symbol.renderFeature(f, context)
symbol.stopRender(context)
painter.end()
self.assertTrue(self.imageCheck('symbol_layer', 'symbollayer_disabled', image))
def testRenderLineLayerDisabled(self):
""" test that rendering a line symbol with disabled layer works"""
layer = QgsSimpleLineSymbolLayer()
layer.setEnabled(False)
symbol = QgsLineSymbol()
symbol.changeSymbolLayer(0, layer)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
geom = QgsGeometry.fromWkt('LineString (0 0,3 4,4 3)')
f = QgsFeature()
f.setGeometry(geom)
extent = geom.constGet().boundingBox()
# buffer extent by 10%
extent = extent.buffered((extent.height() + extent.width()) / 20.0)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
image.fill(QColor(255, 255, 255))
symbol.startRender(context)
symbol.renderFeature(f, context)
symbol.stopRender(context)
painter.end()
self.assertTrue(self.imageCheck('symbol_layer', 'symbollayer_disabled', image))
def append_CartographicLineSymbolLayer(symbol, layer: CartographicLineSymbolLayer):
"""
Appends a CartographicLineSymbolLayer to a symbol
"""
color = symbol_color_to_qcolor(layer.color)
out = QgsSimpleLineSymbolLayer(color)
out.setEnabled(layer.enabled)
out.setLocked(layer.locked)
out.setWidth(layer.width)
out.setWidthUnit(QgsUnitTypes.RenderPoints)
out.setPenJoinStyle(symbol_pen_to_qpenjoinstyle(layer.join))
out.setPenCapStyle(symbol_pen_to_qpencapstyle(layer.cap))
if layer.template is not None:
apply_template_to_LineSymbolLayer_custom_dash(layer.template, out)
# better matching of null stroke color to QGIS symbology
if out.color().alpha() == 0:
out.setPenStyle(Qt.NoPen)
out.setOffset(layer.offset)
out.setOffsetUnit(QgsUnitTypes.RenderPoints)
symbol.appendSymbolLayer(out)
if layer.decoration is not None:
append_Decorations(symbol, layer.decoration)
def append_CartographicLineSymbolLayer(symbol, layer):
"""
Appends a CartographicLineSymbolLayer to a symbol
"""
color = symbol_color_to_qcolor(layer.color)
out = QgsSimpleLineSymbolLayer(color)
out.setEnabled(layer.enabled)
out.setLocked(layer.locked)
out.setWidth(points_to_mm(layer.width))
out.setPenJoinStyle(symbol_pen_to_qpenjoinstyle(layer.join))
out.setPenCapStyle(symbol_pen_to_qpencapstyle(layer.cap))
if layer.pattern_parts:
interval = layer.pattern_interval
dash_vector = []
for part in layer.pattern_parts:
dash_vector.append(points_to_mm(part[0] * interval))
dash_vector.append(points_to_mm(part[1] * interval))
out.setCustomDashVector(dash_vector)
out.setUseCustomDashPattern(True)
# better matching of null stroke color to QGIS symbology
if out.color().alpha() == 0:
out.setPenStyle(Qt.NoPen)
if layer.marker_positions or layer.marker:
raise NotImplementedException(
'Cartographic line start/end markers are not yet supported')
# todo - change to new symbol layer if outline offset set
symbol.appendSymbolLayer(out)
def append_CartographicLineSymbolLayer(symbol,
layer: CartographicLineSymbolLayer,
context: Context):
"""
Appends a CartographicLineSymbolLayer to a symbol
"""
color = symbol_color_to_qcolor(layer.color)
out = QgsSimpleLineSymbolLayer(color)
out.setEnabled(layer.enabled)
out.setLocked(layer.locked)
out.setWidth(context.convert_size(max(
0, layer.width))) # sometimes lines have negative width?
out.setWidthUnit(context.units)
out.setPenJoinStyle(symbol_pen_to_qpenjoinstyle(layer.join))
out.setPenCapStyle(symbol_pen_to_qpencapstyle(layer.cap))
if layer.template is not None:
apply_template_to_LineSymbolLayer_custom_dash(layer.template, out,
context)
# better matching of null stroke color to QGIS symbology
if out.color().alpha() == 0:
out.setPenStyle(Qt.NoPen)
out.setOffset(context.convert_size(layer.offset))
out.setOffsetUnit(context.units)
symbol.appendSymbolLayer(out)
if layer.decoration is not None:
append_Decorations(symbol, layer.decoration, context)
def append_SimpleLineSymbolLayer(symbol, layer):
"""
Appends a SimpleLineSymbolLayer to a symbol
"""
color = symbol_color_to_qcolor(layer.color)
out = QgsSimpleLineSymbolLayer(color)
out.setEnabled(layer.enabled)
out.setLocked(layer.locked)
out.setWidth(points_to_mm(layer.width))
out.setPenStyle(symbol_pen_to_qpenstyle(layer.line_type))
# out.setPenJoinStyle(symbol_pen_to_qpenjoinstyle(layer.join))
# better matching of null stroke color to QGIS symbology
if out.color().alpha() == 0:
out.setPenStyle(Qt.NoPen)
# todo - change to new symbol layer if outline offset set
symbol.appendSymbolLayer(out)
def append_SimpleLineSymbolLayer(symbol, layer, context: Context):
"""
Appends a SimpleLineSymbolLayer to a symbol
"""
color = symbol_color_to_qcolor(layer.color)
out = QgsSimpleLineSymbolLayer(color)
out.setEnabled(layer.enabled)
out.setLocked(layer.locked)
out.setWidth(context.convert_size(max(
0, layer.width))) # sometimes lines have negative width?
out.setWidthUnit(context.units)
out.setPenStyle(symbol_pen_to_qpenstyle(layer.line_type))
# better matching of null stroke color to QGIS symbology
if out.color().alpha() == 0:
out.setPenStyle(Qt.NoPen)
symbol.appendSymbolLayer(out)
