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# Copyright 2007 Mitchell N. Charity
# Copyright 2009 Walter Bender
#
# This file is part of Ruler.
#
# Ruler is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ruler is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ruler. If not, see <http://www.gnu.org/licenses/>
import cairo
from math import pi
from util import mm, dimensions_mm, set_background_color
class ScreenOfCircles():
def __init__(self, font, font_bold, w, h):
self.font = font
self.font_bold = font_bold
self.w = w
self.h = h
def draw(self, c, dpi):
set_background_color(c, self.w, self.h)
c.set_antialias(cairo.ANTIALIAS_GRAY)
nw, nh = dimensions_mm(dpi, self.w, self.h)
def sq(x, y):
c.rectangle(x, y, mm(dpi, 10), mm(dpi, 10))
c.fill()
w=nw
h=nh
for xm in range(0, w, 20):
for ym in range(0, h, 20):
sq(mm(dpi, xm), mm(dpi, ym))
for xm in range(10, w, 20):
for ym in range(10, h, 20):
sq(mm(dpi, xm), mm(dpi, ym))
c.set_line_width(1)
c.move_to(mm(dpi, 100), 0)
c.rel_line_to(0, mm(dpi, 100))
c.rel_line_to(mm(dpi, -100), 0)
c.stroke()
c.set_line_width(3)
v = 0.5
c.set_source_rgb(v, v, v)
c.move_to(mm(dpi, 50), 0)
c.rel_line_to(0, mm(dpi, 100))
c.move_to(0, mm(dpi, 50))
c.rel_line_to(mm(dpi, 100), 0)
c.stroke()
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