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-rw-r--r--gerber/render/cairo_backend.py180
-rw-r--r--gerber/render/render.py21
-rw-r--r--gerber/render/theme.py50
3 files changed, 184 insertions, 67 deletions
diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py
index 2b7c2ff..5a3c7a1 100644
--- a/gerber/render/cairo_backend.py
+++ b/gerber/render/cairo_backend.py
@@ -28,6 +28,7 @@ import tempfile
from ..primitives import *
+
class GerberCairoContext(GerberContext):
def __init__(self, scale=300):
GerberContext.__init__(self)
@@ -35,12 +36,17 @@ class GerberCairoContext(GerberContext):
self.surface = None
self.ctx = None
self.bg = False
-
+ self.mask = None
+ self.mask_ctx = None
+ self.origin_in_pixels = None
+ self.size_in_pixels = None
+
def set_bounds(self, bounds):
origin_in_inch = (bounds[0][0], bounds[1][0])
size_in_inch = (abs(bounds[0][1] - bounds[0][0]), abs(bounds[1][1] - bounds[1][0]))
size_in_pixels = map(mul, size_in_inch, self.scale)
-
+ self.origin_in_pixels = tuple(map(mul, origin_in_inch, self.scale)) if self.origin_in_pixels is None else self.origin_in_pixels
+ self.size_in_pixels = size_in_pixels if self.size_in_pixels is None else self.size_in_pixels
if self.surface is None:
self.surface_buffer = tempfile.NamedTemporaryFile()
self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1])
@@ -48,29 +54,38 @@ class GerberCairoContext(GerberContext):
self.ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD)
self.ctx.scale(1, -1)
self.ctx.translate(-(origin_in_inch[0] * self.scale[0]), (-origin_in_inch[1]*self.scale[0]) - size_in_pixels[1])
- # self.ctx.translate(-(origin_in_inch[0] * self.scale[0]), -origin_in_inch[1]*self.scale[1])
+ self.mask = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1])
+ self.mask_ctx = cairo.Context(self.mask)
+ self.mask_ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD)
+ self.mask_ctx.scale(1, -1)
+ self.mask_ctx.translate(-(origin_in_inch[0] * self.scale[0]), (-origin_in_inch[1]*self.scale[0]) - size_in_pixels[1])
def _render_line(self, line, color):
start = map(mul, line.start, self.scale)
end = map(mul, line.end, self.scale)
+ if not self.invert:
+ ctx = self.ctx
+ ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha)
+ ctx.set_operator(cairo.OPERATOR_OVER if line.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
+ else:
+ ctx = self.mask_ctx
+ ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
+ ctx.set_operator(cairo.OPERATOR_CLEAR)
if isinstance(line.aperture, Circle):
width = line.aperture.diameter
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (line.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(width * self.scale[0])
- self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
- self.ctx.move_to(*start)
- self.ctx.line_to(*end)
- self.ctx.stroke()
+ ctx.set_line_width(width * self.scale[0])
+ ctx.set_line_cap(cairo.LINE_CAP_ROUND)
+
+ ctx.move_to(*start)
+ ctx.line_to(*end)
+ ctx.stroke()
elif isinstance(line.aperture, Rectangle):
points = [tuple(map(mul, x, self.scale)) for x in line.vertices]
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (line.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(0)
- self.ctx.move_to(*points[0])
+ ctx.set_line_width(0)
+ ctx.move_to(*points[0])
for point in points[1:]:
- self.ctx.line_to(*point)
- self.ctx.fill()
+ ctx.line_to(*point)
+ ctx.fill()
def _render_arc(self, arc, color):
center = map(mul, arc.center, self.scale)
@@ -86,27 +101,42 @@ class GerberCairoContext(GerberContext):
width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001
else:
width = max(arc.aperture.width, arc.aperture.height, 0.001)
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (arc.level_polarity == "dark" and not self.invert)else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(width * self.scale[0])
- self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
- self.ctx.move_to(*start) # You actually have to do this...
+
+ if not self.invert:
+ ctx = self.ctx
+ ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha)
+ ctx.set_operator(cairo.OPERATOR_OVER if arc.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
+ else:
+ ctx = self.mask_ctx
+ ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
+ ctx.set_operator(cairo.OPERATOR_CLEAR)
+
+ ctx.set_line_width(width * self.scale[0])
+ ctx.set_line_cap(cairo.LINE_CAP_ROUND)
+ ctx.move_to(*start) # You actually have to do this...
if arc.direction == 'counterclockwise':
- self.ctx.arc(center[0], center[1], radius, angle1, angle2)
+ ctx.arc(center[0], center[1], radius, angle1, angle2)
else:
- self.ctx.arc_negative(center[0], center[1], radius, angle1, angle2)
- self.ctx.move_to(*end) # ...lame
- self.ctx.stroke()
+ ctx.arc_negative(center[0], center[1], radius, angle1, angle2)
+ ctx.move_to(*end) # ...lame
+ ctx.stroke()
def _render_region(self, region, color):
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (region.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(0)
- self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
- self.ctx.move_to(*tuple(map(mul, region.primitives[0].start, self.scale)))
+ if not self.invert:
+ ctx = self.ctx
+ ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha)
+ ctx.set_operator(cairo.OPERATOR_OVER if region.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
+ else:
+ ctx = self.mask_ctx
+ ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
+ ctx.set_operator(cairo.OPERATOR_CLEAR)
+
+ ctx.set_line_width(0)
+ ctx.set_line_cap(cairo.LINE_CAP_ROUND)
+ ctx.move_to(*tuple(map(mul, region.primitives[0].start, self.scale)))
for p in region.primitives:
if isinstance(p, Line):
- self.ctx.line_to(*tuple(map(mul, p.end, self.scale)))
+ ctx.line_to(*tuple(map(mul, p.end, self.scale)))
else:
center = map(mul, p.center, self.scale)
start = map(mul, p.start, self.scale)
@@ -115,25 +145,40 @@ class GerberCairoContext(GerberContext):
angle1 = p.start_angle
angle2 = p.end_angle
if p.direction == 'counterclockwise':
- self.ctx.arc(center[0], center[1], radius, angle1, angle2)
+ ctx.arc(center[0], center[1], radius, angle1, angle2)
else:
- self.ctx.arc_negative(center[0], center[1], radius, angle1, angle2)
- self.ctx.fill()
+ ctx.arc_negative(center[0], center[1], radius, angle1, angle2)
+ ctx.fill()
def _render_circle(self, circle, color):
center = tuple(map(mul, circle.position, self.scale))
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (circle.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(0)
- self.ctx.arc(center[0], center[1], circle.radius * self.scale[0], 0, 2 * math.pi)
- self.ctx.fill()
+ if not self.invert:
+ ctx = self.ctx
+ ctx.set_source_rgba(*color, alpha=self.alpha)
+ ctx.set_operator(cairo.OPERATOR_OVER if circle.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
+ else:
+ ctx = self.mask_ctx
+ ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
+ ctx.set_operator(cairo.OPERATOR_CLEAR)
+ ctx.set_line_width(0)
+ ctx.arc(center[0], center[1], radius=circle.radius * self.scale[0], angle1=0, angle2=2 * math.pi)
+ ctx.fill()
def _render_rectangle(self, rectangle, color):
ll = map(mul, rectangle.lower_left, self.scale)
width, height = tuple(map(mul, (rectangle.width, rectangle.height), map(abs, self.scale)))
+ if not self.invert:
+ ctx = self.ctx
+ ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha)
+ ctx.set_operator(cairo.OPERATOR_OVER if rectangle.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
+ else:
+ ctx = self.mask_ctx
+ ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
+ ctx.set_operator(cairo.OPERATOR_CLEAR)
+
if rectangle.rotation != 0:
- self.ctx.save()
+ ctx.save()
center = map(mul, rectangle.position, self.scale)
matrix = cairo.Matrix()
@@ -142,16 +187,14 @@ class GerberCairoContext(GerberContext):
ll[0] = ll[0] - center[0]
ll[1] = ll[1] - center[1]
matrix.rotate(rectangle.rotation)
- self.ctx.transform(matrix)
-
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (rectangle.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(0)
- self.ctx.rectangle(ll[0], ll[1], width, height)
- self.ctx.fill()
+ ctx.transform(matrix)
+
+ ctx.set_line_width(0)
+ ctx.rectangle(ll[0], ll[1], width, height)
+ ctx.fill()
if rectangle.rotation != 0:
- self.ctx.restore()
+ ctx.restore()
def _render_obround(self, obround, color):
self._render_circle(obround.subshapes['circle1'], color)
@@ -196,14 +239,21 @@ class GerberCairoContext(GerberContext):
end = map(mul, slot.end, self.scale)
width = slot.diameter
+
+ if not self.invert:
+ ctx = self.ctx
+ ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha)
+ ctx.set_operator(cairo.OPERATOR_OVER if slot.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
+ else:
+ ctx = self.mask_ctx
+ ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
+ ctx.set_operator(cairo.OPERATOR_CLEAR)
- self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (slot.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
- self.ctx.set_line_width(width * self.scale[0])
- self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
- self.ctx.move_to(*start)
- self.ctx.line_to(*end)
- self.ctx.stroke()
+ ctx.set_line_width(width * self.scale[0])
+ ctx.set_line_cap(cairo.LINE_CAP_ROUND)
+ ctx.move_to(*start)
+ ctx.line_to(*end)
+ ctx.stroke()
def _render_amgroup(self, amgroup, color):
self.ctx.push_group()
@@ -217,17 +267,23 @@ class GerberCairoContext(GerberContext):
self.ctx.set_font_size(200)
self._render_circle(Circle(primitive.position, 0.01), color)
self.ctx.set_source_rgb(*color)
- self.ctx.set_operator(cairo.OPERATOR_OVER if (primitive.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
+ self.ctx.set_operator(cairo.OPERATOR_OVER if primitive.level_polarity == "dark" else cairo.OPERATOR_CLEAR)
self.ctx.move_to(*[self.scale[0] * (coord + 0.01) for coord in primitive.position])
self.ctx.scale(1, -1)
self.ctx.show_text(primitive.net_name)
self.ctx.scale(1, -1)
- def _paint_inverted_layer(self):
- self.ctx.set_source_rgba(self.background_color[0], self.background_color[1], self.background_color[2])
+ def _paint_inverted_layer(self):
+ self.mask_ctx.set_operator(cairo.OPERATOR_OVER)
+ self.mask_ctx.set_source_rgba(self.background_color[0], self.background_color[1], self.background_color[2], alpha=self.alpha)
+ self.mask_ctx.paint()
+
+ def _render_mask(self):
self.ctx.set_operator(cairo.OPERATOR_OVER)
+ ptn = cairo.SurfacePattern(self.mask)
+ ptn.set_matrix(cairo.Matrix(xx=1.0, yy=-1.0, x0=-self.origin_in_pixels[0], y0=self.size_in_pixels[1] + self.origin_in_pixels[1]))
+ self.ctx.set_source(ptn)
self.ctx.paint()
- self.ctx.set_operator(cairo.OPERATOR_CLEAR)
def _paint_background(self):
if not self.bg:
@@ -237,21 +293,17 @@ class GerberCairoContext(GerberContext):
def dump(self, filename):
is_svg = filename.lower().endswith(".svg")
-
if is_svg:
self.surface.finish()
self.surface_buffer.flush()
-
with open(filename, "w") as f:
self.surface_buffer.seek(0)
f.write(self.surface_buffer.read())
f.flush()
-
else:
self.surface.write_to_png(filename)
-
+
def dump_svg_str(self):
self.surface.finish()
self.surface_buffer.flush()
return self.surface_buffer.read()
-
diff --git a/gerber/render/render.py b/gerber/render/render.py
index 128496f..6ae9392 100644
--- a/gerber/render/render.py
+++ b/gerber/render/render.py
@@ -23,12 +23,13 @@ Rendering
Render Gerber and Excellon files to a variety of formats. The render module
currently supports SVG rendering using the `svgwrite` library.
"""
+
+
+from ..primitives import *
from ..gerber_statements import (CommentStmt, UnknownStmt, EofStmt, ParamStmt,
CoordStmt, ApertureStmt, RegionModeStmt,
- QuadrantModeStmt,
-)
+ QuadrantModeStmt,)
-from ..primitives import *
class GerberContext(object):
""" Gerber rendering context base class
@@ -213,3 +214,17 @@ class GerberContext(object):
def _render_test_record(self, primitive, color):
pass
+
+class Renderable(object):
+ def __init__(self, color=None, alpha=None, invert=False):
+ self.color = color
+ self.alpha = alpha
+ self.invert = invert
+
+ def to_render(self):
+ """ Override this in subclass. Should return a list of Primitives or Renderables
+ """
+ raise NotImplementedError('to_render() must be implemented in subclass')
+
+ def apply_theme(self, theme):
+ raise NotImplementedError('apply_theme() must be implemented in subclass')
diff --git a/gerber/render/theme.py b/gerber/render/theme.py
new file mode 100644
index 0000000..5d39bb6
--- /dev/null
+++ b/gerber/render/theme.py
@@ -0,0 +1,50 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright 2013-2014 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.
+
+
+COLORS = {
+ 'black': (0.0, 0.0, 0.0),
+ 'white': (1.0, 1.0, 1.0),
+ 'fr-4': (0.702, 0.655, 0.192),
+ 'green soldermask': (0.0, 0.612, 0.396),
+ 'blue soldermask': (0.059, 0.478, 0.651),
+ 'red soldermask': (0.968, 0.169, 0.165),
+ 'black soldermask': (0.298, 0.275, 0.282),
+ 'enig copper': (0.780, 0.588, 0.286),
+ 'hasl copper': (0.871, 0.851, 0.839)
+}
+
+
+class RenderSettings(object):
+ def __init__(self, color, alpha=1.0, invert=False):
+ self.color = color
+ self.alpha = alpha
+ self.invert = False
+
+
+class Theme(object):
+ def __init__(self, **kwargs):
+ self.background = kwargs.get('background', RenderSettings(COLORS['black'], 0.0))
+ self.topsilk = kwargs.get('topsilk', RenderSettings(COLORS['white']))
+ self.topsilk = kwargs.get('bottomsilk', RenderSettings(COLORS['white']))
+ self.topmask = kwargs.get('topmask', RenderSettings(COLORS['green soldermask'], 0.8, True))
+ self.topmask = kwargs.get('topmask', RenderSettings(COLORS['green soldermask'], 0.8, True))
+ self.top = kwargs.get('top', RenderSettings(COLORS['hasl copper']))
+ self.bottom = kwargs.get('top', RenderSettings(COLORS['hasl copper']))
+ self.drill = kwargs.get('drill', self.background)
+
+
generated by cgit (git 2.34.1) at 2024-11-07 18:36:32 +0000