From 888ae71889dfb4a9698f8f2607b649d384dd3738 Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.de>
Date: Sun, 9 Apr 2023 17:53:54 +0200
Subject: protoserve: Gerber download works

---
 gerbonara/cad/protoserve.py                   | 25 +++++++++++++++++-------
 gerbonara/cad/protoserve_data/protoserve.html | 28 +++++++++++++++++++++++++--
 2 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/gerbonara/cad/protoserve.py b/gerbonara/cad/protoserve.py
index 0bf9dce..b594196 100644
--- a/gerbonara/cad/protoserve.py
+++ b/gerbonara/cad/protoserve.py
@@ -1,10 +1,10 @@
 #!/usr/bin/env python
 
 import importlib.resources
-from tempfile import TemporaryDirectory
+from tempfile import NamedTemporaryFile, TemporaryDirectory
 from pathlib import Path
 
-from quart import Quart, request, Response
+from quart import Quart, request, Response, send_file
 
 from . import protoboard as pb
 from . import protoserve_data
@@ -104,10 +104,7 @@ def deserialize(obj, unit):
             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)
 
-@app.route('/preview.svg', methods=['POST'])
-async def preview():
-    obj = await request.get_json()
-
+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)))
@@ -118,13 +115,27 @@ async def preview():
 
     content = deserialize(obj['children'][0], unit)
 
-    board = pb.ProtoBoard(w, h, content,
+    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()
diff --git a/gerbonara/cad/protoserve_data/protoserve.html b/gerbonara/cad/protoserve_data/protoserve.html
index 4b116b2..7bc9a30 100644
--- a/gerbonara/cad/protoserve_data/protoserve.html
+++ b/gerbonara/cad/protoserve_data/protoserve.html
@@ -268,7 +268,7 @@ input {
         <div id="links">
             <a href="#controls">Settings</a>
             <a href="#preview">Preview</a>
-            <a href='/download'>
+            <a id="link-gerbers" href='#'>
                 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" width="1em">
                     <title>Download</title>
                     <!--! Font Awesome Pro 6.4.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license (Commercial License) Copyright 2023 Fonticons, Inc. --><path d="M288 32c0-17.7-14.3-32-32-32s-32 14.3-32 32V274.7l-73.4-73.4c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3l128 128c12.5 12.5 32.8 12.5 45.3 0l128-128c12.5-12.5 12.5-32.8 0-45.3s-32.8-12.5-45.3 0L288 274.7V32zM64 352c-35.3 0-64 28.7-64 64v32c0 35.3 28.7 64 64 64H448c35.3 0 64-28.7 64-64V416c0-35.3-28.7-64-64-64H346.5l-45.3 45.3c-25 25-65.5 25-90.5 0L165.5 352H64zm368 56a24 24 0 1 1 0 48 24 24 0 1 1 0-48z"/>
@@ -863,7 +863,7 @@ input {
                 }
             }
 
-            previewBlobURL = null;
+            let previewBlobURL = null;
             previewReloader = new RateLimiter(async () => {
                 const response = await fetch('preview.svg', {
                     method: 'POST',
@@ -892,6 +892,30 @@ input {
                 });
             }
 
+            let downloadObjectURL = null;
+            document.querySelector('#link-gerbers').addEventListener('click', async () => {
+                const response = await fetch('gerbers.zip', {
+                    method: 'POST',
+                    mode: 'same-origin',
+                    cache: 'no-cache',
+                    headers: {'Content-Type': 'application/json'},
+                    body: serialize(),
+                });
+                const data = await response.blob();
+                /* cf. https://gist.github.com/devloco/5f779216c988438777b76e7db113d05c */
+                const zipBlob = new Blob([data], { type: 'application/zip' });
+                    
+                if (downloadObjectURL) {
+                    URL.revokeObjectURL(downloadObjectURL);
+                }
+                
+                downloadObjectURL = URL.createObjectURL(zipBlob);
+                let link = document.createElement('a');
+                link.href = downloadObjectURL;
+                link.download = 'gerbers.zip';
+                link.click();
+            });
+
             hookupPreviewUpdate(document.querySelector('.group.board'));
             previewReloader.scheduleCall();
         </script>
-- 
cgit