From 5696fc7064af674d02cf84cf7934c1ac7446259e Mon Sep 17 00:00:00 2001 From: Hamilton Kibbe Date: Fri, 18 Nov 2016 08:09:03 -0500 Subject: Fix a bunch of bugs in rendering that showed up when rendering the gerbv test suite --- gerber/render/cairo_backend.py | 488 +++++++++++++++++++++++++---------------- 1 file changed, 305 insertions(+), 183 deletions(-) (limited to 'gerber') diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index 31a1e77..a2baa47 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -1,4 +1,4 @@ -#! /usr/bin/env python +#!/usr/bin/env python # -*- coding: utf-8 -*- # Copyright 2014 Hamilton Kibbe @@ -29,6 +29,7 @@ import os from .render import GerberContext, RenderSettings from .theme import THEMES from ..primitives import * +from ..utils import rotate_point from io import BytesIO @@ -67,16 +68,13 @@ class GerberCairoContext(GerberContext): size_in_pixels = self.scale_point(size_in_inch) self.origin_in_inch = origin_in_inch if self.origin_in_inch is None else self.origin_in_inch self.size_in_inch = size_in_inch if self.size_in_inch is None else self.size_in_inch + self._xform_matrix = cairo.Matrix(xx=1.0, yy=-1.0, + x0=-self.origin_in_pixels[0], + y0=self.size_in_pixels[1]) if (self.surface is None) or new_surface: self.surface_buffer = tempfile.NamedTemporaryFile() self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1]) self.output_ctx = cairo.Context(self.surface) - self.output_ctx.scale(1, -1) - self.output_ctx.translate(-(origin_in_inch[0] * self.scale[0]), - (-origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) - self._xform_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]) def render_layer(self, layer, filename=None, settings=None, bgsettings=None, verbose=False): @@ -155,6 +153,23 @@ class GerberCairoContext(GerberContext): self.surface_buffer.close() self.surface_buffer = None + def _new_mask(self): + class Mask: + def __enter__(msk): + size_in_pixels = self.size_in_pixels + msk.surface = cairo.SVGSurface(None, size_in_pixels[0], + size_in_pixels[1]) + msk.ctx = cairo.Context(msk.surface) + msk.ctx.translate(-self.origin_in_pixels[0], -self.origin_in_pixels[1]) + return msk + + + def __exit__(msk, exc_type, exc_val, traceback): + if hasattr(msk.surface, 'finish'): + msk.surface.finish() + + return Mask() + def _render_layer(self, layer, settings): self.invert = settings.invert # Get a new clean layer to render on @@ -167,31 +182,36 @@ class GerberCairoContext(GerberContext): def _render_line(self, line, color): start = [pos * scale for pos, scale in zip(line.start, self.scale)] end = [pos * scale for pos, scale in zip(line.end, self.scale)] - self.ctx.set_operator(cairo.OPERATOR_SOURCE - if line.level_polarity == 'dark' and - (not self.invert) else cairo.OPERATOR_CLEAR) - if isinstance(line.aperture, Circle): - width = line.aperture.diameter - 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() - elif isinstance(line.aperture, Rectangle): - points = [self.scale_point(x) for x in line.vertices] - self.ctx.set_line_width(0) - self.ctx.move_to(*points[0]) - for point in points[1:]: - self.ctx.line_to(*point) - self.ctx.fill() + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and line.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._new_mask() as mask: + if isinstance(line.aperture, Circle): + width = line.aperture.diameter + mask.ctx.set_line_width(width * self.scale[0]) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + mask.ctx.move_to(*start) + mask.ctx.line_to(*end) + mask.ctx.stroke() + + elif hasattr(line, 'vertices') and line.vertices is not None: + points = [self.scale_point(x) for x in line.vertices] + mask.ctx.set_line_width(0) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_arc(self, arc, color): center = self.scale_point(arc.center) start = self.scale_point(arc.start) end = self.scale_point(arc.end) radius = self.scale[0] * arc.radius - angle1 = arc.start_angle - angle2 = arc.end_angle + two_pi = 2 * math.pi + angle1 = (arc.start_angle + two_pi) % two_pi + angle2 = (arc.end_angle + two_pi) % two_pi if angle1 == angle2 and arc.quadrant_mode != 'single-quadrant': # Make the angles slightly different otherwise Cario will draw nothing angle2 -= 0.000000001 @@ -200,61 +220,111 @@ class GerberCairoContext(GerberContext): else: width = max(arc.aperture.width, arc.aperture.height, 0.001) - self.ctx.set_operator(cairo.OPERATOR_SOURCE - 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 arc.direction == 'counterclockwise': - self.ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2) - else: - self.ctx.arc_negative(*center, radius=radius, - angle1=angle1, angle2=angle2) - self.ctx.move_to(*end) # ...lame + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and arc.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + + with self._new_mask() as mask: + mask.ctx.set_line_width(width * self.scale[0]) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND if isinstance(arc.aperture, Circle) else cairo.LINE_CAP_SQUARE) + mask.ctx.move_to(*start) # You actually have to do this... + if arc.direction == 'counterclockwise': + mask.ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2) + else: + mask.ctx.arc_negative(*center, radius=radius, + angle1=angle1, angle2=angle2) + mask.ctx.move_to(*end) # ...lame + mask.ctx.stroke() + + #if isinstance(arc.aperture, Rectangle): + # print("Flash Rectangle Ends") + # print(arc.aperture.rotation * 180/math.pi) + # rect = arc.aperture + # width = self.scale[0] * rect.width + # height = self.scale[1] * rect.height + # for point, angle in zip((start, end), (angle1, angle2)): + # print("{} w {} h{}".format(point, rect.width, rect.height)) + # mask.ctx.rectangle(point[0] - width/2.0, + # point[1] - height/2.0, width, height) + # mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + def _render_region(self, region, color): - self.ctx.set_operator(cairo.OPERATOR_SOURCE - 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(*self.scale_point(region.primitives[0].start)) - for prim in region.primitives: - if isinstance(prim, Line): - self.ctx.line_to(*self.scale_point(prim.end)) - else: - center = self.scale_point(prim.center) - radius = self.scale[0] * prim.radius - angle1 = prim.start_angle - angle2 = prim.end_angle - if prim.direction == 'counterclockwise': - self.ctx.arc(*center, radius=radius, - angle1=angle1, angle2=angle2) + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) and region.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + mask.ctx.move_to(*self.scale_point(region.primitives[0].start)) + for prim in region.primitives: + if isinstance(prim, Line): + mask.ctx.line_to(*self.scale_point(prim.end)) else: - self.ctx.arc_negative(*center, radius=radius, - angle1=angle1, angle2=angle2) - self.ctx.fill() + center = self.scale_point(prim.center) + radius = self.scale[0] * prim.radius + angle1 = prim.start_angle + angle2 = prim.end_angle + if prim.direction == 'counterclockwise': + mask.ctx.arc(*center, radius=radius, + angle1=angle1, angle2=angle2) + else: + mask.ctx.arc_negative(*center, radius=radius, + angle1=angle1, angle2=angle2) + mask.ctx.fill() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_circle(self, circle, color): center = self.scale_point(circle.position) - self.ctx.set_operator(cairo.OPERATOR_SOURCE - if circle.level_polarity == 'dark' and - (not self.invert) else cairo.OPERATOR_CLEAR) - self.ctx.set_line_width(0) - self.ctx.arc(*center, radius=(circle.radius * self.scale[0]), angle1=0, - angle2=(2 * math.pi)) - self.ctx.fill() - - if circle.hole_diameter > 0: - # Render the center clear - - self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) - self.ctx.arc(center[0], center[1], - radius=circle.hole_radius * self.scale[0], angle1=0, - angle2=2 * math.pi) - self.ctx.fill() + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and circle.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + mask.ctx.arc(center[0], + center[1], + radius=(circle.radius * self.scale[0]), + angle1=0, + angle2=(2 * math.pi)) + mask.ctx.fill() + + if hasattr(circle, 'hole_diameter') and circle.hole_diameter > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR) + mask.ctx.arc(center[0], + center[1], + radius=circle.hole_radius * self.scale[0], + angle1=0, + angle2=2 * math.pi) + mask.ctx.fill() + + if (hasattr(circle, 'hole_width') and hasattr(circle, 'hole_height') + and circle.hole_width > 0 and circle.hole_height > 0): + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if circle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height = self.scale_point((circle.hole_width, circle.hole_height)) + lower_left = rotate_point( + (center[0] - width / 2.0, center[1] - height / 2.0), + circle.rotation, center) + lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0), + circle.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), + circle.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), + circle.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_rectangle(self, rectangle, color): @@ -262,101 +332,156 @@ class GerberCairoContext(GerberContext): width, height = tuple([abs(coord) for coord in self.scale_point((rectangle.width, rectangle.height))]) - self.ctx.set_operator(cairo.OPERATOR_SOURCE - if rectangle.level_polarity == 'dark' and - (not self.invert) else cairo.OPERATOR_CLEAR) - - if rectangle.rotation != 0: - self.ctx.save() - - center = map(mul, rectangle.position, self.scale) - matrix = cairo.Matrix() - matrix.translate(center[0], center[1]) - # For drawing, we already handles the translation - lower_left[0] = lower_left[0] - center[0] - lower_left[1] = lower_left[1] - center[1] - matrix.rotate(rectangle.rotation) - self.ctx.transform(matrix) - - if rectangle.hole_diameter > 0: - self.ctx.push_group() - - self.ctx.set_line_width(0) - self.ctx.rectangle(*lower_left, width=width, height=height) - self.ctx.fill() - - if rectangle.hole_diameter > 0: - # Render the center clear - self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) - self.ctx.set_operator(cairo.OPERATOR_CLEAR - if rectangle.level_polarity == 'dark' - and (not self.invert) - else cairo.OPERATOR_SOURCE) - center = map(mul, rectangle.position, self.scale) - self.ctx.arc(center[0], center[1], - radius=rectangle.hole_radius * self.scale[0], angle1=0, - angle2=2 * math.pi) - self.ctx.fill() - - if rectangle.rotation != 0: - self.ctx.restore() + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and rectangle.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._new_mask() as mask: + + mask.ctx.set_line_width(0) + mask.ctx.rectangle(*lower_left, width=width, height=height) + mask.ctx.fill() + + center = self.scale_point(rectangle.position) + if rectangle.hole_diameter > 0: + # Render the center clear + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if rectangle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + + mask.ctx.arc(center[0], center[1], + radius=rectangle.hole_radius * self.scale[0], angle1=0, + angle2=2 * math.pi) + mask.ctx.fill() + + if rectangle.hole_width > 0 and rectangle.hole_height > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if rectangle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height = self.scale_point((rectangle.hole_width, rectangle.hole_height)) + lower_left = rotate_point((center[0] - width/2.0, center[1] - height/2.0), rectangle.rotation, center) + lower_right = rotate_point((center[0] + width/2.0, center[1] - height/2.0), rectangle.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), rectangle.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), rectangle.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_obround(self, obround, color): - if obround.hole_diameter > 0: - self.ctx.push_group() - - self._render_circle(obround.subshapes['circle1'], color) - self._render_circle(obround.subshapes['circle2'], color) - self._render_rectangle(obround.subshapes['rectangle'], color) - - if obround.hole_diameter > 0: - # Render the center clear - self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) - center = map(mul, obround.position, self.scale) - self.ctx.arc(center[0], center[1], - radius=obround.hole_radius * self.scale[0], angle1=0, - angle2=2 * math.pi) - self.ctx.fill() - - self.ctx.pop_group_to_source() - self.ctx.paint_with_alpha(1) - + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and obround.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + + # Render circles + for circle in (obround.subshapes['circle1'], obround.subshapes['circle2']): + center = self.scale_point(circle.position) + mask.ctx.arc(center[0], + center[1], + radius=(circle.radius * self.scale[0]), + angle1=0, + angle2=(2 * math.pi)) + mask.ctx.fill() + + # Render Rectangle + rectangle = obround.subshapes['rectangle'] + lower_left = self.scale_point(rectangle.lower_left) + width, height = tuple([abs(coord) for coord in + self.scale_point((rectangle.width, + rectangle.height))]) + mask.ctx.rectangle(*lower_left, width=width, height=height) + mask.ctx.fill() + + center = self.scale_point(obround.position) + if obround.hole_diameter > 0: + # Render the center clear + mask.ctx.set_operator(cairo.OPERATOR_CLEAR) + mask.ctx.arc(center[0], center[1], + radius=obround.hole_radius * self.scale[0], angle1=0, + angle2=2 * math.pi) + mask.ctx.fill() + + if obround.hole_width > 0 and obround.hole_height > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if rectangle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height =self.scale_point((obround.hole_width, obround.hole_height)) + lower_left = rotate_point((center[0] - width / 2.0, center[1] - height / 2.0), + obround.rotation, center) + lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0), + obround.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), + obround.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), + obround.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_polygon(self, polygon, color): - - # TODO Ths does not handle rotation of a polygon - self.ctx.set_operator(cairo.OPERATOR_SOURCE - if polygon.level_polarity == 'dark' and - (not self.invert) else cairo.OPERATOR_CLEAR) - if polygon.hole_radius > 0: - self.ctx.push_group() - - vertices = polygon.vertices - - self.ctx.set_line_width(0) - self.ctx.set_line_cap(cairo.LINE_CAP_ROUND) - - # Start from before the end so it is easy to iterate and make sure it is closed - self.ctx.move_to(*map(mul, vertices[-1], self.scale)) - for v in vertices: - self.ctx.line_to(*map(mul, v, self.scale)) - - self.ctx.fill() - - if polygon.hole_radius > 0: - # Render the center clear - center = tuple(map(mul, polygon.position, self.scale)) - self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) - self.ctx.set_operator(cairo.OPERATOR_CLEAR - if polygon.level_polarity == 'dark' - and (not self.invert) - else cairo.OPERATOR_SOURCE) - self.ctx.set_line_width(0) - self.ctx.arc(center[0], - center[1], - polygon.hole_radius * self.scale[0], 0, 2 * math.pi) - self.ctx.fill() + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and polygon.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._new_mask() as mask: + + vertices = polygon.vertices + mask.ctx.set_line_width(0) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + # Start from before the end so it is easy to iterate and make sure + # it is closed + mask.ctx.move_to(*self.scale_point(vertices[-1])) + for v in vertices: + mask.ctx.line_to(*self.scale_point(v)) + mask.ctx.fill() + + center = self.scale_point(polygon.position) + if polygon.hole_radius > 0: + # Render the center clear + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if polygon.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + mask.ctx.set_line_width(0) + mask.ctx.arc(center[0], + center[1], + polygon.hole_radius * self.scale[0], 0, 2 * math.pi) + mask.ctx.fill() + + if polygon.hole_width > 0 and polygon.hole_height > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if polygon.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height = self.scale_point((polygon.hole_width, polygon.hole_height)) + lower_left = rotate_point((center[0] - width / 2.0, center[1] - height / 2.0), + polygon.rotation, center) + lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0), + polygon.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), + polygon.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), + polygon.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_drill(self, circle, color=None): color = color if color is not None else self.drill_color @@ -368,22 +493,20 @@ class GerberCairoContext(GerberContext): width = slot.diameter - self.ctx.set_operator(cairo.OPERATOR_SOURCE + 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() + with self._new_mask() as mask: + mask.ctx.set_line_width(width * self.scale[0]) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + mask.ctx.move_to(*start) + mask.ctx.line_to(*end) + mask.ctx.stroke() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) def _render_amgroup(self, amgroup, color): - self.ctx.push_group() for primitive in amgroup.primitives: self.render(primitive) - self.ctx.pop_group_to_source() - self.ctx.paint_with_alpha(1) def _render_test_record(self, primitive, color): position = [pos + origin for pos, origin in @@ -392,7 +515,7 @@ class GerberCairoContext(GerberContext): 'monospace', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD) self.ctx.set_font_size(13) self._render_circle(Circle(position, 0.015), color) - self.ctx.set_operator(cairo.OPERATOR_SOURCE + self.ctx.set_operator(cairo.OPERATOR_OVER if primitive.level_polarity == 'dark' and (not self.invert) else cairo.OPERATOR_CLEAR) self.ctx.move_to(*[self.scale[0] * (coord + 0.015) for coord in position]) @@ -405,26 +528,25 @@ class GerberCairoContext(GerberContext): matrix = copy.copy(self._xform_matrix) layer = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1]) ctx = cairo.Context(layer) - ctx.scale(1, -1) - ctx.translate(-(self.origin_in_inch[0] * self.scale[0]), - (-self.origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) + if self.invert: + ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) ctx.set_operator(cairo.OPERATOR_OVER) ctx.paint() if mirror: matrix.xx = -1.0 matrix.x0 = self.origin_in_pixels[0] + self.size_in_pixels[0] self.ctx = ctx + self.ctx.set_matrix(matrix) self.active_layer = layer self.active_matrix = matrix + def _flatten(self, color=None, alpha=None): color = color if color is not None else self.color alpha = alpha if alpha is not None else self.alpha - ptn = cairo.SurfacePattern(self.active_layer) - ptn.set_matrix(self.active_matrix) self.output_ctx.set_source_rgba(*color, alpha=alpha) - self.output_ctx.mask(ptn) + self.output_ctx.mask_surface(self.active_layer) self.ctx = None self.active_layer = None self.active_matrix = None -- cgit