Remove svgwrite backend

We moved the functionality to cairo backend, it can write png and svg and maybe more (pdfs?)

5 files changed, 4 insertions, 137 deletions

diff --git a/README.md b/README.md
index 5453cf8..098b704 100644
--- a/README.md
+++ b/README.md
@@ -9,14 +9,14 @@ Tools to handle Gerber and Excellon files in Python.
 Useage Example:

 ---------------

     import gerber

-    from gerber.render import GerberSvgContext

+    from gerber.render import GerberCairoContext

 

     # Read gerber and Excellon files

     top_copper = gerber.read('example.GTL')

     nc_drill = gerber.read('example.txt')

 

     # Rendering context

-    ctx = GerberSvgContext()

+    ctx = GerberCairoContext()

 

     # Create SVG image

     top_copper.render(ctx)

diff --git a/gerber/__main__.py b/gerber/__main__.py
index 195973b..6643b54 100644
--- a/gerber/__main__.py
+++ b/gerber/__main__.py
@@ -17,14 +17,14 @@
 
 if __name__ == '__main__':
     from gerber.common import read
-    from gerber.render import GerberSvgContext
+    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 = GerberSvgContext()
+    ctx = GerberCairoContext()
     ctx.alpha = 0.95
     for filename in sys.argv[1:]:
         print("parsing %s" % filename)
diff --git a/gerber/render/__init__.py b/gerber/render/__init__.py
index 1e60792..f76d28f 100644
--- a/gerber/render/__init__.py
+++ b/gerber/render/__init__.py
@@ -24,5 +24,4 @@ SVG is the only supported format.
 """
 
 
-from .svgwrite_backend import GerberSvgContext
 from .cairo_backend import GerberCairoContext
diff --git a/gerber/render/svgwrite_backend.py b/gerber/render/svgwrite_backend.py
deleted file mode 100644
index f8136e0..0000000
--- a/gerber/render/svgwrite_backend.py
+++ /dev/null
@@ -1,130 +0,0 @@
-#! /usr/bin/env python
-# -*- coding: utf-8 -*-
-
-# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
-# Based on render_svg.py by Paulo Henrique Silva <ph.silva@gmail.com>
-
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from .render import GerberContext
-from operator import mul
-import math
-import svgwrite
-
-from ..primitives import *
-
-SCALE = 400.
-
-
-def svg_color(color):
-    color = tuple([int(ch * 255) for ch in color])
-    return  'rgb(%d, %d, %d)' % color
-
-
-class GerberSvgContext(GerberContext):
-    def __init__(self):
-        GerberContext.__init__(self)
-        self.scale = (SCALE, -SCALE)
-        self.dwg = svgwrite.Drawing()
-        self.background = False
-
-    def dump(self, filename):
-        self.dwg.saveas(filename)
-
-    def set_bounds(self, bounds):
-        xbounds, ybounds = bounds
-        size = (SCALE * (xbounds[1] - xbounds[0]),
-                SCALE * (ybounds[1] - ybounds[0]))
-        if not self.background:
-            vbox = '%f, %f, %f, %f' % (SCALE * xbounds[0], -SCALE * ybounds[1],
-                                       size[0], size[1])
-            self.dwg = svgwrite.Drawing(viewBox=vbox)
-            rect = self.dwg.rect(insert=(SCALE * xbounds[0],
-                                         -SCALE * ybounds[1]),
-                                 size=size,
-                                 fill=svg_color(self.background_color))
-            self.dwg.add(rect)
-            self.background = True
-
-    def _render_line(self, line, color):
-        start = map(mul, line.start, self.scale)
-        end = map(mul, line.end, self.scale)
-        if isinstance(line.aperture, Circle):
-            width = line.aperture.diameter if line.aperture.diameter != 0 else 0.001
-            aline = self.dwg.line(start=start, end=end,
-                                  stroke=svg_color(color),
-                                  stroke_width=SCALE * width,
-                                  stroke_linecap='round')
-            aline.stroke(opacity=self.alpha)
-            self.dwg.add(aline)
-        elif isinstance(line.aperture, Rectangle):
-            points = [tuple(map(mul, point, self.scale)) for point in line.vertices]
-            path = self.dwg.path(d='M %f, %f' % points[0],
-                                 fill=svg_color(color),
-                                 stroke='none')
-            path.fill(opacity=self.alpha)
-            for point in points[1:]:
-                path.push('L %f, %f' % point)
-            self.dwg.add(path)
-
-    def _render_arc(self, arc, color):
-        start = tuple(map(mul, arc.start, self.scale))
-        end = tuple(map(mul, arc.end, self.scale))
-        radius = SCALE * arc.radius
-        width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001
-        arc_path = self.dwg.path(d='M %f, %f' % start,
-                                    stroke=svg_color(color),
-                                    stroke_width=SCALE * width)
-        large_arc = arc.sweep_angle >= 2 * math.pi
-        direction = '-' if arc.direction == 'clockwise' else '+'
-        arc_path.push_arc(end, 0, radius, large_arc, direction, True)
-        self.dwg.add(arc_path)
-
-    def _render_region(self, region, color):
-        points = [tuple(map(mul, point, self.scale)) for point in region.points]
-        region_path = self.dwg.path(d='M %f, %f' % points[0],
-                                    fill=svg_color(color),
-                                    stroke='none')
-        region_path.fill(opacity=self.alpha)
-        for point in points[1:]:
-            region_path.push('L %f, %f' % point)
-        self.dwg.add(region_path)
-
-    def _render_circle(self, circle, color):
-        center = map(mul, circle.position, self.scale)
-        acircle = self.dwg.circle(center=center,
-                                  r = SCALE * circle.radius,
-                                  fill=svg_color(color))
-        acircle.fill(opacity=self.alpha)
-        self.dwg.add(acircle)
-
-    def _render_rectangle(self, rectangle, color):
-        center = tuple(map(mul, rectangle.position, self.scale))
-        size = tuple(map(mul, (rectangle.width, rectangle.height), map(abs, self.scale)))
-        insert = center[0] - size[0] / 2., center[1] - size[1] / 2.
-        arect = self.dwg.rect(insert=insert, size=size,
-                              fill=svg_color(color))
-        arect.fill(opacity=self.alpha)
-        self.dwg.add(arect)
-
-    def _render_obround(self, obround, color):
-        self._render_circle(obround.subshapes['circle1'], color)
-        self._render_circle(obround.subshapes['circle2'], color)
-        self._render_rectangle(obround.subshapes['rectangle'], color)
-
-
-    def _render_drill(self, circle, color):
-        center = map(mul, circle.position, self.scale)
-        hit = self.dwg.circle(center=center, r=SCALE * circle.radius,
-                              fill=svg_color(color))
-        self.dwg.add(hit)
diff --git a/requirements.txt b/requirements.txt
index a97b5f3..a7f5f01 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,2 @@
 ## The following requirements were added by pip --freeze:
 cairocffi==0.6
-svgwrite==1.1.6
-