def _draw_stroke(self, ctx: Context, geom: Union[Polygon, MultiPolygon]):
if isinstance(geom, MultiPolygon):
for sub_geom in geom.geoms:
self._draw_stroke(ctx, sub_geom)
return
CairoHelper.draw_polygon(ctx, geom)
ctx.stroke()
def _(d: Line, ctx: cairo.Context, scale: float):
ctx.save()
ctx.move_to(d.x0 * scale, d.y0 * scale)
ctx.line_to(d.x1 * scale, d.y1 * scale)
ctx.stroke()
# ctx.fill()
ctx.restore()
def paint_foreground(self, ctx: Context):
if self.border_corner:
draw_rounded_rectangle(ctx, Rectangle(ZERO_TOP_LEFT, self.size), self.border_corner)
ctx.clip()
self.paint_scale_background(ctx)
if self.values:
pos = 0.0
for value in self.values:
l_pos = pos
pos += value[0] / self._total
if value[1]:
ctx.set_source_rgba(*value[1])
if self.orientation == BarWidget.Orientation.HORIZONTAL_LEFT_TO_RIGHT:
ctx.rectangle(l_pos * self.width, 0, (pos - l_pos) * self.width, self.height)
elif self.orientation == BarWidget.Orientation.HORIZONTAL_RIGHT_TO_LEFT:
ctx.rectangle(self.width - l_pos * self.width, 0, self.width - (l_pos - pos) * self.width,
self.height)
elif self.orientation == BarWidget.Orientation.VERTICAL_DOWN:
ctx.rectangle(0, l_pos * self.height, self.width, (pos - l_pos) * self.height)
elif self.orientation == BarWidget.Orientation.VERTICAL_UP:
ctx.rectangle(0, self.height - l_pos * self.height, self.width, (l_pos - pos) * self.height)
ctx.fill()
self.paint_scale_foreground(ctx)
if self.border:
ctx.set_source_rgba(*self.border)
ctx.set_line_width(self.border_width)
draw_rounded_rectangle(ctx, Rectangle(ZERO_TOP_LEFT, self.size), self.border_corner)
ctx.stroke()
def _draw_railway(self, ctx: Context, line_string: LineString):
CairoHelper.draw_line_string(ctx, line_string)
# Todo: Buffer the linestring outwards
# ShapelyHelper.buffer_linestring()
ctx.stroke()
def draw(self, ctx: Context, polygon: bool) -> None:
line_width_current = self.line_width_initial
ctx.set_source_rgb(self.color[0], self.color[1], self.color[2])
x_start = self.position[0]
x_end = x_start + self.target_width
y = self.position[1]
while ((self.line_width_check_is_greater
and line_width_current > self.line_width_final)
or (not self.line_width_check_is_greater
and line_width_current < self.line_width_final)):
ctx.set_line_width(line_width_current)
y += line_width_current / 2
if polygon:
ctx.move_to(x_start, y - line_width_current / 2)
ctx.line_to(x_end, y - line_width_current / 2)
ctx.line_to(x_end, y + line_width_current / 2)
ctx.line_to(x_start, y + line_width_current / 2)
ctx.fill()
else:
ctx.move_to(x_start, y)
ctx.line_to(x_end, y)
ctx.stroke()
# Add the white space
y += line_width_current
# prepare next line width
y += line_width_current / 2
line_width_current += self.line_width_delta
def export_svg(fn, paths, size, line_with=0.1, scale_factor=None):
from cairocffi import SVGSurface, Context
from .ddd import spatial_sort_2d as sort
if not scale_factor:
scale_factor = size
s = SVGSurface(fn, size, size)
c = Context(s)
c.set_line_width(0.1)
paths = sort(paths)
for path in paths:
path *= scale_factor
c.new_path()
c.move_to(*path[0,:])
for p in path[1:]:
c.line_to(*p)
c.stroke()
c.save()
def coloured_bezier(ctx: cairo.Context, p0, p1, p2, p3, colors, width, detail=100, fade=None):
p0 = np.array(p0)
p1 = np.array(p1)
p2 = np.array(p2)
p3 = np.array(p3)
bez, bezd = cubic_bezier(p0, p1, p2, p3, numpoints=detail)
bezd = normalize(bezd, norm='l2', axis=1)
frac_sum = -.5
for color, frac in colors:
(r, g, b, a) = color
if fade is None:
ctx.set_source_rgba(r, g, b, a)
else:
ctx.set_source(fade_pattern(p0[0], p0[1], p3[0], p3[1], r, g, b, a, fade))
ctx.set_line_width(frac*width)
frac_sum += frac/2
ctx.move_to(bez[0][0] - width * frac_sum * bezd[0][1], bez[0][1] + width * frac_sum * bezd[0][0])
for i in range(0, bez.shape[0] - 3, 3):
ctx.curve_to(bez[i + 1][0] - width * frac_sum * bezd[i + 1][1], bez[i + 1][1] + width * frac_sum * bezd[i + 1][0],
bez[i + 2][0] - width * frac_sum * bezd[i + 2][1], bez[i + 2][1] + width * frac_sum * bezd[i + 2][0],
bez[i + 3][0] - width * frac_sum * bezd[i + 3][1], bez[i + 3][1] + width * frac_sum * bezd[i + 3][0])
# for i in range(0, bez.shape[0] - 3, 2):
# ctx.move_to(bez[i][0] - width * frac_sum * bezd[i][1], bez[i][1] + width * frac_sum * bezd[i][0])
# ctx.curve_to(bez[i + 1][0] - width * frac_sum * bezd[i + 1][1], bez[i + 1][1] + width * frac_sum * bezd[i + 1][0],
# bez[i + 2][0] - width * frac_sum * bezd[i + 2][1], bez[i + 2][1] + width * frac_sum * bezd[i + 2][0],
# bez[i + 3][0] - width * frac_sum * bezd[i + 3][1], bez[i + 3][1] + width * frac_sum * bezd[i + 3][0])
ctx.stroke()
frac_sum += frac/2
def _draw_stroke(self, ctx: Context, geom: Union[LineString,
MultiLineString]):
if isinstance(geom, MultiLineString):
for sub_geom in geom.geoms:
self._draw_stroke(ctx, sub_geom)
return
CairoHelper.draw_line_string(ctx, geom)
ctx.stroke()
def draw(self, context: cairo.Context, x: float, y: float, fxy: FixXY):
if debug:
context.set_source_rgb(1 if self.no_page_break else 0, 0, 0)
context.rectangle(*fxy(x - 5, y), *fxy(2, 16))
context.fill()
context.set_source_rgb(0.5, 0.5, 0.5)
context.rectangle(*fxy(self.indent + x, y),
*fxy(self.width, self.height))
context.stroke()
def paint_foreground(self, ctx: Context):
ctx.set_line_width(self.line_width)
if self.orientation == Line.Orientation.HORIZONTAL:
ctx.move_to(*self.size.position(Anchor.CENTER_LEFT))
ctx.line_to(*self.size.position(Anchor.CENTER_RIGHT))
else:
ctx.move_to(*self.size.position(Anchor.TOP_CENTER))
ctx.line_to(*self.size.position(Anchor.BOTTOM_CENTER))
ctx.stroke()
def paint_scale_background(self, ctx: Context):
cpu_count = Global.system_data.cpu_count
for i in range(cpu_count):
if i % 2:
ctx.set_source_rgba(*Color.GRAY33)
else:
ctx.set_source_rgba(*Color.GRAY50)
ctx.move_to(0, self.height - self.height / cpu_count * i)
ctx.line_to(self.width, self.height - self.height / cpu_count * i)
ctx.stroke()
def draw_ray_trace(r0: Sequence[float], elements: Sequence[Element],
ctx: cairo.Context, scale: float):
ctx.save()
r = r0
for element in elements:
ctx.move_to(0, r[0] * scale)
ctx.translate(element.thickness * scale, 0)
rp = element.matrix.dot(r)
ctx.line_to(0, rp[0] * scale)
ctx.stroke()
r = rp
ctx.restore()
def draw(self, ctx: Context, outline: Union[Polygon, MultiPolygon]):
if isinstance(outline, MultiPolygon):
shadow_line_strings = []
for sub_outline in outline.geoms:
shadow_line_string = self.draw(ctx, sub_outline)
shadow_line_strings.append(shadow_line_string)
return shadow_line_strings
buffered_outline = outline.buffer(-self.outline_line_width / 2, cap_style=3, join_style=2)
shadow_line_strings = self._get_shadow_lines(buffered_outline)
for shadow_line_string in shadow_line_strings:
CairoHelper.draw_line_string(ctx, shadow_line_string)
ctx.stroke()
pass
def paint_foreground(self, ctx: Context):
if self._image:
sx = self.width / self._image.get_width()
sy = self.height / self._image.get_height()
s = min(sx, sy)
sw = self._image.get_width() * s
sh = self._image.get_height() * s
ctx.scale(s, s)
x = 0
y = 0
if self.alignment == Anchor.TOP_LEFT:
x = 0
y = 0
elif self.alignment == Anchor.TOP_CENTER:
x = (self.width - sw) / 2
y = 0
elif self.alignment == Anchor.TOP_RIGHT:
x = self.width - sw
y = 0
elif self.alignment == Anchor.CENTER_LEFT:
x = 0
y = (self.height - sh) / 2
elif self.alignment == Anchor.CENTER_CENTER:
x = (self.width - sw) / 2
y = (self.height - sh) / 2
elif self.alignment == Anchor.CENTER_RIGHT:
x = (self.width - sw)
y = (self.height - sh) / 2
elif self.alignment == Anchor.BOTTOM_LEFT:
x = 0
y = self.height - sh
elif self.alignment == Anchor.BOTTOM_CENTER:
x = (self.width - sw) / 2
y = self.height - sh
elif self.alignment == Anchor.BOTTOM_RIGHT:
x = self.width - sw
y = self.height - sh
x /= s
y /= s
ctx.set_source_surface(self._image, x, y)
ctx.paint()
else:
ctx.move_to(0, 0)
ctx.line_to(self.size.width, self.size.height)
ctx.stroke()
ctx.move_to(0, self.size.height)
ctx.line_to(self.size.width, 0)
ctx.stroke()
def draw_border(
self,
g: Graphics,
component: T,
color: RGBA,
thickness: float = GlassLookAndFeel.BorderThickness) -> None:
area = component.bounds
if area.width == 0 or area.height == 0:
return
g.set_source_rgba(color.r, color.g, color.b, color.a)
g.set_line_width(thickness)
self.draw_rect(g, area, 8)
g.stroke()
def label_train_spaces(ctx: cairo.Context,
train: trains.Train,
radius_factors=1,
broken_spaces: Sequence = None):
"""Draw material name and thickness of the spaces.
Args:
radius_factors (scalar or sequence): Factor by which the average interface radii is multiplied to place the text. If
a scalar is given it is broadcast.
"""
spaces, brokens = break_spaces(train.spaces, broken_spaces)
radius_factors = np.broadcast_to(radius_factors, (len(spaces), ))
radius_last = train.interfaces[0].radius
y_last = 0
h_last = 0
n = train.interfaces[0].n1
for space, next_interface, radius_factor in zip(
spaces, train.interfaces + (None, ), radius_factors):
if next_interface is None:
radius_next = radius_last
h_next = 0
else:
radius_next = next_interface.radius
h_next = functions.calc_sphere_sag(next_interface.roc, radius_next)
y_next = y_last + space
if space != 0:
string = '%.3f mm %s' % (space * 1e3, n.name)
radius = (radius_last + radius_next) / 2
x = radius_factor * radius
y = (y_next + h_next + y_last + h_last) / 2
ctx.save()
ctx.translate(x, y)
ctx.show_text(string)
ctx.new_path()
ctx.restore()
if radius_factor > 1:
draw_polyline(ctx, ((radius, y), (x, y)))
ctx.stroke()
y_last = y_next
h_last = h_next
if next_interface is not None:
n = next_interface.n2
radius_last = next_interface.radius
def _show_layout_line_logical_extents(
context: cairocffi.Context,
layout: pangocffi.Layout
):
layout_iter = layout.get_iter()
context.set_line_width(0.5)
context.set_dash([1, 1])
alternate = True
while True:
alternate = not alternate
extents = layout_iter.get_line_extents()
context.set_source_rgba(0, 0, 1 if alternate else 0.5, 0.9)
_rectangle_path(context, extents[1])
context.stroke()
_coordinate_path(context, (extents[1].x, extents[1].y))
context.fill()
if not layout_iter.next_run():
break
def label_interface(ctx: cairo.Context,
face: trains.Interface,
radius_factor=1):
"""Draw text saying ROC, and a line from the edge of the interface to the text.
Args:
radius_factor (scalar): Factor by which interface radius is multiplied to get text x position.
"""
x = radius_factor * face.radius
y = functions.calc_sphere_sag(face.roc, face.radius)
string = 'ROC %.3f mm' % (face.roc * 1e3)
ctx.set_source_rgb(0, 0, 0)
ctx.save()
ctx.translate(x, y)
ctx.show_text(string)
ctx.new_path()
ctx.restore()
if radius_factor > 1:
draw_polyline(ctx, ((face.radius, y), (x, y)))
ctx.stroke()
def draw_labels(self, ctx: Context) -> None:
point_diameter_current = self.point_diameter_initial
text_height_room = 0
ctx.set_source_rgb(self.color[0], self.color[1], self.color[2])
points_per_row = math.floor(self.target_width / self.point_margin)
i = 0
while ((self.point_diameter_check_is_greater
and point_diameter_current > self.point_diameter_final)
or (not self.point_diameter_check_is_greater
and point_diameter_current < self.point_diameter_final)):
col = i % points_per_row
row = math.floor(i / points_per_row)
x = self.position[
0] + col * self.point_margin + self.point_margin / 2
y = self.position[
1] + row * self.point_margin + self.point_margin / 2
first_point_diameter_in_row = point_diameter_current
last_point_diameter_in_row = point_diameter_current + self.point_diameter_delta * (
points_per_row - 1)
print(first_point_diameter_in_row)
print(last_point_diameter_in_row)
if text_height_room > 2:
ctx.move_to(x + 0, y)
ctx.line_to(x + 2, y)
ctx.stroke()
self.draw_text(
ctx,
"{0:.3f} - {1:.3f}".format(first_point_diameter_in_row,
last_point_diameter_in_row) +
" mm", x + 3, y, 2)
text_height_room = 0
i += points_per_row
point_diameter_current += self.point_diameter_delta * points_per_row
text_height_room += self.point_margin
def _show_layout_baseline(
context: cairocffi.Context,
layout: pangocffi.Layout
):
layout_iter = layout.get_iter()
context.set_line_width(0.5)
context.set_dash([1, 1])
while True:
extents = layout_iter.get_line_extents()
baseline = layout_iter.get_baseline()
y_ranges = layout_iter.get_line_yrange()
context.set_source_rgba(1, 0, 0, 0.9)
context.move_to(
pangocffi.units_to_double(extents[0].x),
pangocffi.units_to_double(y_ranges[0])
)
context.line_to(
pangocffi.units_to_double(extents[0].x + extents[0].width),
pangocffi.units_to_double(y_ranges[0])
)
context.stroke()
context.set_source_rgba(0, 1, 0, 0.9)
context.stroke()
context.move_to(
pangocffi.units_to_double(extents[0].x),
pangocffi.units_to_double(baseline)
)
context.line_to(
pangocffi.units_to_double(extents[0].x + extents[0].width),
pangocffi.units_to_double(baseline)
)
context.stroke()
context.set_source_rgba(0, 0, 1, 0.9)
context.move_to(
pangocffi.units_to_double(extents[0].x),
pangocffi.units_to_double(y_ranges[1])
)
context.line_to(
pangocffi.units_to_double(extents[0].x + extents[0].width),
pangocffi.units_to_double(y_ranges[1])
)
context.stroke()
if not layout_iter.next_run():
break
def _generate_layer(self, transcription, page, layer):
surface = PDFSurface(layer, *page.page_size)
context = Context(surface)
# context.select_font_face('Georgia')
context.set_source_rgba(1, 1, 1, 1 / 256) # almost invisible
context.set_font_size(2)
for line_ink, line_transcription in zip(page.lines, transcription):
ink, transformation = writing.normalized(line_ink)
context.save()
context.transform(
Matrix(*(Transformation.translation(
0, page.page_size[1]).parameter)))
context.transform(Matrix(*(Transformation.mirror(0).parameter)))
context.transform(Matrix(*((~transformation).parameter)))
context.transform(Matrix(*(Transformation.mirror(0).parameter)))
HANDWRITING_WIDTH = ink.boundary_box[1]
TYPEWRITING_WIDTH = context.text_extents(line_transcription)[2]
context.scale(HANDWRITING_WIDTH / TYPEWRITING_WIDTH, 1)
context.move_to(0, 0)
context.show_text(line_transcription)
context.restore()
context.stroke()
context.show_page()
surface.flush()
def draw_labels(self, ctx: Context):
ctx.set_line_width(0.1)
line_width_current = self.line_width_initial
text_height_room = 0
ctx.set_source_rgb(self.color[0], self.color[1], self.color[2])
x = self.position[0]
y = self.position[1]
while ((self.line_width_check_is_greater
and line_width_current > self.line_width_final)
or (not self.line_width_check_is_greater
and line_width_current < self.line_width_final)):
y += line_width_current / 2
text_height_room += line_width_current / 2
# Draw the line annotating the row
if text_height_room > 2:
ctx.move_to(x + 0, y)
ctx.line_to(x + 2, y)
ctx.stroke()
self.draw_text(ctx,
"{0:.2f}".format(line_width_current) + " mm",
x + 3, y, 2)
text_height_room = 0
# Add the white space
y += line_width_current
text_height_room += line_width_current
# prepare next line width
y += line_width_current / 2
text_height_room += line_width_current / 2
line_width_current += self.line_width_delta
def _show_layout_y_ranges(
context: cairocffi.Context,
layout: pangocffi.Layout
):
layout_iter = layout.get_iter()
context.set_line_width(0.5)
context.set_dash([1, 1])
alternate = True
while True:
alternate = not alternate
extents = layout_iter.get_line_extents()
y_ranges = layout_iter.get_line_yrange()
context.set_source_rgba(0, 0, 1 if alternate else 0.5, 0.9)
context.move_to(
pangocffi.units_to_double(extents[0].x),
pangocffi.units_to_double(y_ranges[0])
)
context.line_to(
pangocffi.units_to_double(extents[0].x + extents[0].width),
pangocffi.units_to_double(y_ranges[0])
)
context.stroke()
context.move_to(
pangocffi.units_to_double(extents[0].x),
pangocffi.units_to_double(y_ranges[1])
)
context.line_to(
pangocffi.units_to_double(extents[0].x + extents[0].width),
pangocffi.units_to_double(y_ranges[1])
)
context.stroke()
if not layout_iter.next_run():
break
def __draw_ring (self: 'HueSatWheelWidget', cr: cairocffi.Context,
width: int, height: int, center_x: float, center_y: float,
outer: float, inner: float) -> None:
self.__redraw = False
stride = cairocffi.ImageSurface.format_stride_for_width (cairocffi.FORMAT_ARGB32, width)
buf = numpy.empty (int (height * stride), dtype = numpy.uint8)
for y in range (height):
idx = y * width * 4
dy = -(y - center_y)
for x in range (width):
dx = x - center_x
dist = dx * dx + dy * dy
angle = math.atan2 (dy, dx)
if angle < 0:
angle += 2 * numpy.pi
hue = angle / (2 * numpy.pi)
hue_idx = int ((angle + 2 * numpy.pi / 3) / (2 * numpy.pi) * 255)
hue_idx = hue_idx % 256
if dist < ((inner - 1) ** 2) * (1 - self.__hist[255 - hue_idx]) or \
dist > ((outer + 1) ** 2):
buf[idx + 0] = 0
buf[idx + 1] = 0
buf[idx + 2] = 0
buf[idx + 3] = 0
idx += 4
continue
r, g, b = colorsys.hsv_to_rgb (hue, 1.0, 1.0)
a = 255
buf[idx + 0] = int (math.floor (r * 255 + 0.5))
buf[idx + 1] = int (math.floor (g * 255 + 0.5))
buf[idx + 2] = int (math.floor (b * 255 + 0.5))
buf[idx + 3] = a
idx += 4
source = cairocffi.ImageSurface.create_for_data (
memoryview (buf), cairocffi.FORMAT_ARGB32, width, height, stride
)
fg_color = self.get_style_context ().get_color (Gtk.StateFlags.NORMAL)
cr.save ()
cr.set_source_rgba (0, 0, 0, 0)
cr.paint ()
cr.set_source_surface (source, 0, 0)
cr.paint ()
cr.set_line_width (1)
cr.new_path ()
cr.set_source_rgba (*list (fg_color))
cr.arc (center_x, center_y, (self.size - 4) / 2. - self.ring_width,
0, 2 * numpy.pi)
cr.stroke ()
cr.arc (center_x, center_y, (self.size - 2) / 2, 0, 2 * numpy.pi)
cr.stroke ()
cr.arc (center_x, center_y, 5, 0, 2 * numpy.pi)
cr.fill ()
cr.restore ()
def _draw_water(self, ctx: Context, outline: Union[Polygon, MultiPolygon]):
# Draw outline of ripple
CairoHelper.draw_polygon(ctx, outline)
ctx.stroke()
self._draw_ripples(ctx, outline)
def _(d: Arc, ctx: cairo.Context, scale: float):
ctx.save()
ctx.arc(d.xc * scale, d.yc * scale, d.radius * scale, d.theta0, d.theta1)
ctx.stroke()
ctx.restore()
y = mean_pin_y - label_height // 2
print(f"{text=}\t{y=}")
if pass_ == 0:
ctx.set_source_rgba(*color, 1)
draw_rounded_rectangle(ctx, x, y, label_width,
label_height, label_radius)
ctx.fill()
for pin_name in pin_names:
pin_x, pin_y, align = pin_defs[pin_name]
pin_x = pin_x * w
pin_y = pin_y * h_bg - h_bg * y_offset
ctx.move_to(line_origin_x, y + label_height // 2)
ctx.line_to(w * pad_sides + pin_x, pin_y)
ctx.set_line_width(4)
ctx.stroke()
else:
ctx.move_to(x + label_pad[0] - x_bearing,
y - y_bearing + label_pad[1])
ctx.set_source_rgb(1, 1, 1)
ctx.show_text(text)
# save to file
canvas.write_to_png(f"{board_name}_{variant_name}.png")
# stride = ImageSurface.format_stride_for_width(format, width)
# data = bytearray(stride * height)
# surface = ImageSurface(format, width, height, data, stride)
def _draw_wall(self, ctx: Context, line_string: LineString):
CairoHelper.draw_line_string(ctx, line_string)
ctx.stroke()
def make_interface(ctx: cairo.Context, face: trains.Interface, num_points=32):
draw_polyline(ctx, face.get_points(num_points))
ctx.stroke()
def _draw_ripple(self, ctx: Context, ripple: Polygon, iteration: int):
CairoHelper.draw_polygon(ctx, ripple)
ctx.stroke()