Merge pull request #102 from chintal/script

Make __main__ functional again and install a script entry point.

2 files changed, 109 insertions, 23 deletions

diff --git a/gerber/__main__.py b/gerber/__main__.py
index 50c5a42..988adff 100644
--- a/gerber/__main__.py
+++ b/gerber/__main__.py
@@ -15,27 +15,108 @@
 # 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.cairo_backend 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()
+
diff --git a/gerber/render/__init__.py b/gerber/render/__init__.py
index fe08d50..c7dbdd5 100644
--- a/gerber/render/__init__.py
+++ b/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,
+}