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#!/usr/bin/env python
import importlib.resources
from tempfile import NamedTemporaryFile, TemporaryDirectory
from pathlib import Path
from quart import Quart, request, Response, send_file
from . import protoboard as pb
from . import protoserve_data
from ..utils import MM, Inch
def extract_importlib(package):
root = TemporaryDirectory()
stack = [(importlib.resources.files(package), Path(root.name))]
while stack:
res, out = stack.pop()
for item in res.iterdir():
item_out = out / item.name
if item.is_file():
item_out.write_bytes(item.read_bytes())
else:
assert item.is_dir()
item_out.mkdir()
stack.push((item, item_out))
return root
static_folder = extract_importlib(protoserve_data)
app = Quart(__name__, static_folder=static_folder.name)
@app.route('/')
async def index():
return await app.send_static_file('protoserve.html')
def deserialize(obj, unit):
pitch_x = float(obj.get('pitch_x', 1.27))
pitch_y = float(obj.get('pitch_y', 1.27))
clearance = float(obj.get('clearance', 0.2))
mil = lambda x: x/1000 if unit == Inch else x
match obj['type']:
case 'layout':
if not obj.get('children'):
return pb.EmptyProtoArea()
proportions = [float(child['layout_prop']) for child in obj['children']]
content = [deserialize(child, unit) for child in obj['children']]
return pb.PropLayout(content, obj['direction'], proportions)
case 'twoside':
top, bottom = obj['children']
return pb.TwoSideLayout(deserialize(top, unit), deserialize(bottom, unit))
case 'placeholder':
return pb.EmptyProtoArea()
case 'smd':
match obj['pad_shape']:
case 'rect':
pad = pb.SMDPad.rect(0, 0, pitch_x-clearance, pitch_y-clearance, paste=False, unit=unit)
case 'circle':
pad = pb.SMDPad.circle(0, 0, min(pitch_x, pitch_y)-clearance, paste=False, unit=unit)
return pb.PatternProtoArea(pitch_x, pitch_y, obj=pad, unit=unit)
case 'tht':
hole_dia = mil(float(obj['hole_dia']))
match obj['plating']:
case 'plated':
oneside, plated = False, True
case 'nonplated':
oneside, plated = False, False
case 'singleside':
oneside, plated = True, False
match obj['pad_shape']:
case 'rect':
pad = pb.THTPad.rect(0, 0, hole_dia, pitch_x-clearance, pitch_y-clearance, paste=False, plated=plated, unit=unit)
case 'circle':
pad = pb.THTPad.circle(0, 0, hole_dia, min(pitch_x, pitch_y)-clearance, paste=False, plated=plated, unit=unit)
case 'obround':
pad = pb.THTPad.obround(0, 0, hole_dia, pitch_x-clearance, pitch_y-clearance, paste=False, plated=plated, unit=unit)
if oneside:
pad.pad_bottom = None
return pb.PatternProtoArea(pitch_x, pitch_y, obj=pad, unit=unit)
case 'manhattan':
return pb.PatternProtoArea(pitch_x, pitch_y, obj=pb.ManhattanPads(pitch_x, pitch_y, clearance, unit=unit), unit=unit)
case 'powered':
pitch = mil(float(obj.get('pitch', 2.54)))
hole_dia = mil(float(obj['hole_dia']))
via_drill = mil(float(obj['via_hole_dia']))
via_dia = mil(float(obj['via_dia']))
trace_width = mil(float(obj['trace_width']))
# Force 1mm margin to avoid shorts when adjacent to planes such as that one in the RF THT proto.
return pb.PatternProtoArea(pitch, pitch, pb.PoweredProto(pitch, hole_dia, clearance, via_size=via_drill, power_pad_dia=via_dia, trace_width=trace_width, unit=unit), margin=1.0, unit=unit)
case 'flower':
pitch = mil(float(obj.get('pitch', 2.54)))
hole_dia = mil(float(obj['hole_dia']))
pattern_dia = mil(float(obj['pattern_dia']))
return pb.PatternProtoArea(2*pitch, 2*pitch, pb.THTFlowerProto(pitch, hole_dia, pattern_dia, unit=unit), unit=unit)
case 'spiky':
return pb.PatternProtoArea(2.54, 2.54, pb.SpikyProto(), unit=unit)
case 'rf':
pitch = float(obj.get('pitch', 2.54))
hole_dia = float(obj['hole_dia'])
via_dia = float(obj['via_dia'])
via_drill = float(obj['via_hole_dia'])
return pb.PatternProtoArea(pitch, pitch, pb.RFGroundProto(pitch, hole_dia, clearance, via_dia, via_drill, unit=MM), unit=MM)
def to_board(obj):
unit = Inch if obj.get('units' == 'us') else MM
w = float(obj.get('width', unit(100, MM)))
h = float(obj.get('height', unit(80, MM)))
corner_radius = float(obj.get('round_corners', {}).get('radius', unit(1.5, MM)))
holes = obj.get('mounting_holes', {})
mounting_hole_dia = float(holes.get('diameter', unit(3.2, MM)))
mounting_hole_offset = float(holes.get('offset', unit(5, MM)))
if obj.get('children'):
content = deserialize(obj['children'][0], unit)
else:
content = [pb.EmptyProtoArea()]
return pb.ProtoBoard(w, h, content,
corner_radius=corner_radius,
mounting_hole_dia=mounting_hole_dia,
mounting_hole_offset=mounting_hole_offset,
unit=unit)
@app.route('/preview.svg', methods=['POST'])
async def preview():
obj = await request.get_json()
board = to_board(obj)
return Response(str(board.pretty_svg()), mimetype='image/svg+xml')
@app.route('/gerbers.zip', methods=['POST'])
async def gerbers():
obj = await request.get_json()
board = to_board(obj)
with NamedTemporaryFile(suffix='.zip') as f:
f = Path(f.name)
board.layer_stack().save_to_zipfile(f)
return Response(f.read_bytes(), mimetype='image/svg+xml')
if __name__ == '__main__':
app.run()
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