Make __main__ functional again and install a script entry point.

gerber/__main__.py

@@ -15,27 +15,107 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
+import os
+import argparse
+from .render import available_renderers
+from .render import theme
+from .pcb import PCB
+from . import load_layer
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Render gerber files to image',
+        prog='gerber-render'
+    )
+    parser.add_argument(
+        'filenames', metavar='FILENAME', type=str, nargs='+',
+        help='Gerber files to render. If a directory is provided, it should '
+             'be provided alone and should contain the gerber files for a '
+             'single PCB.'
+    )
+    parser.add_argument(
+        '--outfile', '-o', type=str, nargs='?', default='out',
+        help="Output Filename (extension will be added automatically)"
+    )
+    parser.add_argument(
+        '--backend', '-b', choices=available_renderers.keys(), default='cairo',
+        help='Choose the backend to use to generate the output.'
+    )
+    parser.add_argument(
+        '--theme', '-t', choices=theme.THEMES.keys(), default='default',
+        help='Select render theme.'
+    )
+    parser.add_argument(
+        '--width', type=int, default=1920, help='Maximum width.'
+    )
+    parser.add_argument(
+        '--height', type=int, default=1080, help='Maximum height.'
+    )
+    parser.add_argument(
+        '--verbose', '-v', action='store_true', default=False,
+        help='Increase verbosity of the output.'
+    )
+    # parser.add_argument(
+    #     '--quick', '-q', action='store_true', default=False,
+    #     help='Skip longer running rendering steps to produce lower quality'
+    #          ' output faster. This only has an effect for the freecad backend.'
+    # )
+    # parser.add_argument(
+    #     '--nox', action='store_true', default=False,
+    #     help='Run without using any GUI elements. This may produce suboptimal'
+    #          'output. For the freecad backend, colors, transparancy, and '
+    #          'visibility cannot be set without a GUI instance.'
+    # )
+
+    args = parser.parse_args()
+
+    renderer = available_renderers[args.backend]()
+
+    if args.backend in ['cairo', ]:
+        outext = 'png'
+    else:
+        outext = None
+
+    if os.path.exists(args.filenames[0]) and os.path.isdir(args.filenames[0]):
+        directory = args.filenames[0]
+        pcb = PCB.from_directory(directory)
+
+        if args.backend in ['cairo', ]:
+            top = pcb.top_layers
+            bottom = pcb.bottom_layers
+            copper = pcb.copper_layers
+
+            outline = pcb.outline_layer
+            if outline:
+                top = [outline] + top
+                bottom = [outline] + bottom
+                copper = [outline] + copper + pcb.drill_layers
+
+            renderer.render_layers(
+                layers=top, theme=theme.THEMES[args.theme],
+                max_height=args.height, max_width=args.width,
+                filename='{0}.top.{1}'.format(args.outfile, outext)
+            )
+            renderer.render_layers(
+                layers=bottom, theme=theme.THEMES[args.theme],
+                max_height=args.height, max_width=args.width,
+                filename='{0}.bottom.{1}'.format(args.outfile, outext)
+            )
+            renderer.render_layers(
+                layers=copper, theme=theme.THEMES['Transparent Multilayer'],
+                max_height=args.height, max_width=args.width,
+                filename='{0}.copper.{1}'.format(args.outfile, outext))
+        else:
+            pass
+    else:
+        filenames = args.filenames
+        for filename in filenames:
+            layer = load_layer(filename)
+            settings = theme.THEMES[args.theme].get(layer.layer_class, None)
+            renderer.render_layer(layer, settings=settings)
+        renderer.dump(filename='{0}.{1}'.format(args.outfile, outext))
+
+
 if __name__ == '__main__':
-    from gerber.common import read
-    from gerber.render import GerberCairoContext
-    import sys
-
-    if len(sys.argv) < 2:
-        sys.stderr.write("Usage: python -m gerber <filename> <filename>...\n")
-        sys.exit(1)
-
-    ctx = GerberCairoContext()
-    ctx.alpha = 0.95
-    for filename in sys.argv[1:]:
-        print("parsing %s" % filename)
-        if 'GTO' in filename or 'GBO' in filename:
-            ctx.color = (1, 1, 1)
-            ctx.alpha = 0.8
-        elif 'GTS' in filename or 'GBS' in filename:
-            ctx.color = (0.2, 0.2, 0.75)
-            ctx.alpha = 0.8
-        gerberfile = read(filename)
-        gerberfile.render(ctx)
-
-    print('Saving image to test.svg')
-    ctx.dump('test.svg')
+    main()

gerber/render/__init__.py

@@ -24,3 +24,8 @@ SVG is the only supported format.
 """
 
 from .render import RenderSettings
+from .cairo_backend import GerberCairoContext
+
+available_renderers = {
+    'cairo': GerberCairoContext,
+}

setup.py

@@ -16,6 +16,7 @@
 # limitations under the License.
 import os
 
+
 def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read()
 
@@ -25,13 +26,13 @@ METADATA = {
     'version': 0.1,
     'author': 'Paulo Henrique Silva <ph.silva@gmail.com>, Hamilton Kibbe <ham@hamiltonkib.be>',
     'author_email': "ph.silva@gmail.com, ham@hamiltonkib.be",
-    'description': ("Utilities to handle Gerber (RS-274X) files."),
+    'description': "Utilities to handle Gerber (RS-274X) files.",
     'license': "Apache",
     'keywords': "pcb gerber tools",
     'url': "http://github.com/curtacircuitos/pcb-tools",
     'packages': ['gerber', 'gerber.render'],
     'long_description': read('README.md'),
-    'classifiers':[
+    'classifiers': [
         "Development Status :: 3 - Alpha",
         "Topic :: Utilities",
         "License :: OSI Approved :: Apple Public Source License",
@@ -40,6 +41,11 @@ METADATA = {
 
 SETUPTOOLS_METADATA = {
     'install_requires': ['cairocffi==0.6'],
+    'entry_points': {
+        'console_scripts': [
+            'gerber-render = gerber.__main__:main',
+        ],
+    },
 }
 
 
@@ -53,9 +59,10 @@ def install():
     except ImportError:
         from sys import stderr
         stderr.write('Could not import setuptools, using distutils')
-        stderr.write('NOTE: You will need to install dependencies manualy')
+        stderr.write('NOTE: You will need to install dependencies manually')
         from distutils.core import setup
         setup(**METADATA)
 
+
 if __name__ == '__main__':
     install()