Generate standalone SVG
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286534188a
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d8fe6a9d46
GPG key ID:
8AC98A811E5BEFF5
2 changed files with 49 additions and 29 deletions
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@ -46,7 +46,10 @@ class OutputPaths:
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raise AttributeError(f'Path exists but is not a directory: {path}')
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os.makedirs(path, exist_ok=True)
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self.path = path
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self.svg_path = os.path.join(path, 'map.svg')
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self.svg_web_path = os.path.join(path, 'web.svg')
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self.svg_standalone_path = os.path.join(path, 'standalone.svg')
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self.font_path = os.path.join(path, 'style/font.ttf')
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self.css_path = os.path.join(path, 'style/erfamap.css')
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self.png_path = os.path.join(path, 'map.png')
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self.html_path = os.path.join(path, 'erfamap.html')
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self.imagemap_path = os.path.join(path, 'imagemap.html')
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@ -258,6 +261,8 @@ class Erfa(Drawable):
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self.lat = lat
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self.x, self.y = ns.projection(lon, lat)
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self.display_name = display_name if display_name is not None else name
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if city.lower() not in self.display_name.lower():
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self.display_name += f' ({city})'
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self.web = web
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self.radius = radius
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@ -322,7 +327,7 @@ class Erfa(Drawable):
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return None
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@classmethod
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def from_api(cls, name, attr, radius, ns):
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def from_api(cls, ns, name, attr, radius):
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city = attr['Chaostreff-City'][0]
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location = cls.address_lookup(attr)
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if location is None:
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@ -393,6 +398,7 @@ class Erfa(Drawable):
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erfa = cls.from_api(ns, name, attr['printouts'], radius)
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erfas.append(erfa)
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except BaseException as e:
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breakpoint()
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print(e)
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continue
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@ -615,10 +621,9 @@ def compute_bbox(ns):
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]
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def optimize_text_layout(ns, erfas, chaostreffs, width, svg):
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def optimize_text_layout(ns, font, erfas, chaostreffs, width, svg):
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# Load the font and measure its various different heights
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font = ImageFont.truetype(ns.font, ns.font_size)
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# Measure the various different font heights
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pil = ImageDraw(Image.new('P', (1, 1)))
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xheight = -pil.textbbox((0,0), 'x', font=font, anchor='ls')[1]
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capheight = -pil.textbbox((0,0), 'A', font=font, anchor='ls')[1]
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@ -763,6 +768,9 @@ def create_imagemap(ns, size, parent, erfas, chaostreffs, texts):
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def create_svg(ns, bbox):
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print('Creating SVG image')
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# Load the font used for the labels
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font = ImageFont.truetype(ns.font, ns.font_size)
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# Convert from WGS84 lon, lat to chosen projection
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svg_box = ns.projection.setup(ns.scale_x, ns.scale_y, bbox=bbox)
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rectbox = [0, 0, svg_box[0], svg_box[1]]
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@ -786,22 +794,27 @@ def create_svg(ns, bbox):
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rectbox[3] = max(y, rectbox[3])
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print('Copying stylesheet and font')
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dst = os.path.join(ns.output_directory.path, ns.stylesheet)
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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shutil.copyfile(ns.stylesheet, dst)
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dst = os.path.join(ns.output_directory.path, ns.font)
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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shutil.copyfile(ns.font, dst)
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os.makedirs(os.path.dirname(ns.output_directory.font_path), exist_ok=True)
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shutil.copyfile(ns.font, ns.output_directory.font_path)
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os.makedirs(os.path.dirname(ns.output_directory.css_path), exist_ok=True)
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fontrelpath = os.path.relpath(ns.output_directory.font_path,
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start=os.path.dirname(ns.output_directory.css_path))
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with open(ns.stylesheet, 'r') as src:
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with open(ns.output_directory.css_path, 'w') as dst:
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dst.write(f'''
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@font-face {{
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font-family: "{font.font.family}";
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src: url("{fontrelpath}");
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}}
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''')
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dst.write(src.read())
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svg = etree.Element('svg',
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xmlns='http://www.w3.org/2000/svg',
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viewBox=f'0 0 {svg_box[0]} {svg_box[1]}',
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width=str(svg_box[0]), height=str(svg_box[1]))
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style = etree.Element('style', type='text/css')
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style.text = f'@import url({ns.stylesheet})'
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svg.append(style)
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bg = etree.Element('rect',
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id='background',
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x=str(rectbox[0]),
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@ -813,7 +826,7 @@ def create_svg(ns, bbox):
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# This can take some time, especially if lots of candidates are generated
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print('Layouting labels')
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texts = optimize_text_layout(ns, erfas, chaostreffs, width=svg_box[0], svg=svg)
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texts = optimize_text_layout(ns, font, erfas, chaostreffs, width=svg_box[0], svg=svg)
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# Render shortest shapes last s.t. Berlin, Hamburg and Bremen are rendered on top of their surrounding states
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states = sorted(states, key=lambda x: -len(x))
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@ -827,24 +840,36 @@ def create_svg(ns, bbox):
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# Generate SVG, PNG and HTML output files
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print('Writing SVG')
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with open(ns.output_directory.svg_path, 'wb') as mapfile:
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print('Writing Web SVG')
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with open(ns.output_directory.svg_web_path, 'wb') as mapfile:
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root = etree.ElementTree(svg)
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root.write(mapfile)
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style = etree.Element('style', type='text/css')
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with open(ns.stylesheet, 'r') as css:
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style.text = css.read()
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svg.insert(0, style)
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print('Writing Standalone SVG')
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with open(ns.output_directory.svg_standalone_path, 'wb') as mapfile:
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root = etree.ElementTree(svg)
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root.write(mapfile)
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print('Writing PNG')
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cairosvg.svg2png(url=ns.output_directory.svg_path, write_to=ns.output_directory.png_path,
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cairosvg.svg2png(url=ns.output_directory.svg_web_path, write_to=ns.output_directory.png_path,
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scale=ns.png_scale)
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print('Writing HTML SVG page')
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html = etree.Element('html')
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head = etree.Element('head')
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link = etree.Element('link', rel='stylesheet', href=ns.stylesheet)
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link = etree.Element('link', rel='stylesheet', href=ns.output_directory.rel(ns.output_directory.css_path))
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head.append(link)
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html.append(head)
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body = etree.Element('body')
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obj = etree.Element('object',
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data=ns.output_directory.rel(ns.output_directory.svg_path),
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data=ns.output_directory.rel(ns.output_directory.svg_web_path),
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width=str(svg_box[0]), height=str(svg_box[1]))
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create_imagemap(ns, svg_box, obj, erfas, chaostreffs, texts)
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body.append(obj)
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@ -856,7 +881,7 @@ def create_svg(ns, bbox):
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print('Writing HTML Image Map')
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html = etree.Element('html')
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head = etree.Element('head')
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link = etree.Element('link', rel='stylesheet', href=ns.stylesheet)
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link = etree.Element('link', rel='stylesheet', href=ns.output_directory.rel(ns.output_directory.css_path))
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head.append(link)
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html.append(head)
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body = etree.Element('body')
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@ -916,7 +941,7 @@ def main():
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if os.path.exists(ns.cache_directory.chaostreff_info):
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os.unlink(ns.cache_directory.chaostreff_info)
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print('Retrieving Chaostreffs information')
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Chaostreff.fetch(target=ns.cache_directory.chaostreff_info, radius=ns.dotsize_treff)
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Chaostreff.fetch(ns, target=ns.cache_directory.chaostreff_info, radius=ns.dotsize_treff)
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bbox = compute_bbox(ns)
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@ -51,13 +51,8 @@ a:hover > text {
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fill: #5b8ca7;
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}
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@font-face {
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font-family: 'concertone';
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src: url('./concertone-regular.ttf');
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}
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text.erfalabel {
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font-family: concertone;
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font-family: "Concert One";
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font-size: 45px;
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z-index: 100;
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user-select: none;
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