def append_PictureFillSymbolLayer(symbol, layer: PictureFillSymbolLayer,
context: Context):
"""
Appends a PictureFillSymbolLayer to a symbol
"""
picture = layer.picture
if issubclass(picture.__class__, StdPicture):
picture = picture.picture
if layer.swap_fb_gb:
raise NotImplementedException('Swap FG/BG color not implemented')
if issubclass(picture.__class__,
EmfPicture) or context.force_svg_instead_of_raster:
if issubclass(picture.__class__, EmfPicture):
path = symbol_name_to_filename(context.symbol_name,
context.picture_folder, 'emf')
with open(path, 'wb') as f:
f.write(picture.content)
svg_path = symbol_name_to_filename(context.symbol_name,
context.picture_folder, 'svg')
emf_to_svg(path, svg_path)
svg_path = context.convert_path(svg_path)
else:
svg = PictureUtils.to_embedded_svg(
picture.content,
symbol_color_to_qcolor(layer.color_foreground),
symbol_color_to_qcolor(layer.color_background),
symbol_color_to_qcolor(layer.color_transparent))
if context.embed_pictures:
svg_base64 = base64.b64encode(
svg.encode('UTF-8')).decode('UTF-8')
svg_path = 'base64:{}'.format(svg_base64)
else:
svg_path = write_svg(svg, context.symbol_name,
context.picture_folder)
svg_path = context.convert_path(svg_path)
width_in_pixels = layer.scale_x * PictureUtils.width_pixels(
picture.content)
width_in_in_points = width_in_pixels / 96 * 72
out = QgsSVGFillSymbolLayer(svg_path,
context.convert_size(width_in_in_points),
convert_angle(layer.angle))
out.setPatternWidthUnit(context.units)
else:
# use raster fill
image_path = write_picture(picture, context.symbol_name,
context.picture_folder,
layer.color_foreground,
layer.color_background,
layer.color_transparent)
out = QgsRasterFillSymbolLayer(image_path)
# convert to points, so that print layouts work nicely. It's a better match for Arc anyway
width_in_pixels = layer.scale_x * PictureUtils.width_pixels(
picture.content)
width_in_in_points = width_in_pixels / 96 * 72
out.setWidth(context.convert_size(width_in_in_points))
out.setWidthUnit(context.units)
out.setAngle(convert_angle(layer.angle))
symbol.appendSymbolLayer(out)
if layer.outline_layer:
append_SymbolLayer_to_QgsSymbolLayer(symbol, layer.outline_layer,
context)
elif layer.outline_symbol:
# get all layers from outline
append_SymbolLayer_to_QgsSymbolLayer(symbol, layer.outline_symbol,
context)
