def test_arrows(): # XXX move to doc
from huygens import config
config(text="pdftex")
Box.DEBUG = False
tbox = lambda t: MarginBox(TextBox(t), 0.05)
rows = [
[r"A", r"B", r"C"],
[r"D", r"E", r"F"],
[r"G", r"H", r"I"],
]
boxs = [[tbox("$%s$"%c) for c in row] for row in rows]
arrows = []
for di in [-1, 0, 1]:
for dj in [-1, 0, 1]:
if di==0 and dj==0:
continue
label = r"$x$"
a = ArrowBox(boxs[1][1], boxs[1+di][1+dj], label=label)
arrows.append(a)
r = 1.1
table = TableBox(boxs, hspace=r, vspace=0.8*r)
box = MasterBox(table, arrows)
cvs = canvas.canvas()
box.render(cvs)
cvs.writePDFfile("output.pdf")
def render(self, cvs=None, x=0, y=0):
if cvs is None:
cvs = canvas.canvas()
self.layout(cvs, x, y)
self.on_render(cvs, self.system)
self.system.refresh()
return cvs
def render(self, cvs=None, x=0, y=0):
if cvs is None:
cvs = canvas.canvas()
#assert (x,y) == (0, 0) # put the anchor here, not used ???
self.layout(cvs, x, y)
self.on_render(cvs, self.system)
self.system.refresh()
return cvs
def test():
from huygens import config
config("pdftex")
#Box.DEBUG=True
st_dashed = [style.linestyle.dashed]
st_arrow = [deco.marrow()]
st_rarrow = [deco.marrow(reverse=True)]
#box = Spider(1, 2)
box = TBone(1, 2, connect=[0, 0], weight=0.5)
box = box * (VWire() @ Spider(1, 2))
box = box * (Spider(2, 1) @ VWire())
cvs = canvas.canvas()
box.render(cvs)
cvs.writePDFfile("output.pdf")
def on_decorate(self, pre, path, post):
assert isinstance(path, Path)
cvs = canvas.canvas()
x, y, dx, dy = path.tangent(self.t)
self.box.render(cvs, x, y)
post += cvs
def test_box():
#
# [<<< table of contents](index.html)
#
# ---
#
# Layout with Box's
# =================
#
from random import random, seed
seed(0)
from huygens.front import canvas, path
from huygens.box import (Box, EmptyBox, CanBox, TextBox, HBox, VBox, OBox,
TableBox, FillBox, MarginBox, AlignBox)
# First we set a debug flag so we can see the shape of every box
#
Box.DEBUG = True
# Every Box has an anchor point, shown with a cross.
# Then, the distance to the four sides of the box
# are stored as attributes `top`, `bot`, `left`, and `right`.
box = EmptyBox(top=0.5, bot=1.0, left=0.2, right=2.)
# To render a box onto a canvas:
cvs = canvas.canvas()
box.render(cvs)
# We can then call `cvs.writeSVGfile("output.svg")` to save an svg file:
yield box, "empty"
#--------------------------------------------------
box = TextBox("Hey there!")
yield box, "text"
#--------------------------------------------------
cvs = canvas.canvas()
cvs.stroke(path.line(0., 0., 1., 1.))
cvs.text(0., 0., "hello everyone")
box = CanBox(cvs)
yield box, 'canbox'
#--------------------------------------------------
# You cannot use the same box more than once in a container Box:
box = TextBox("hello")
box = HBox([box, box]) # FAIL
#yield box, "hbox-fail" # raises assert error
#--------------------------------------------------
box = HBox("geghh xxde xyeey".split())
yield box, "hbox-text"
#--------------------------------------------------
box = VBox("geghh xxde xyeey".split())
yield box, "vbox-text"
#--------------------------------------------------
r = 1.0
a = EmptyBox(top=r, bot=r)
b = EmptyBox(top=r, bot=r)
c = EmptyBox(left=r, right=r)
#box = StrictVBox([a, c])
box = VBox([a, c])
yield box, 'vbox-empty'
#--------------------------------------------------
box = OBox([
EmptyBox(.4, .1, 0., 2.2),
EmptyBox(.3, 0., .5, 2.5),
EmptyBox(1., .5, .5, .5),
FillBox(.2, .2),
])
yield box, "obox"
#--------------------------------------------------
box = HBox([
VBox([TextBox(text) for text in "xxx1 ggg2 xxx3 xx4".split()]),
VBox([TextBox(text) for text in "123 xfdl sdal".split()]),
])
yield box, "hbox-vbox"
#--------------------------------------------------
box = TableBox([[
EmptyBox(.4, .1, 0.2, 2.2),
EmptyBox(.3, 1.2, .5, 2.5),
], [
EmptyBox(.8, .1, 0.4, 1.2),
EmptyBox(.5, 0.4, .5, 1.5),
]])
yield box, "table"
#--------------------------------------------------
def rnd(a, b):
return (b - a) * random() + a
a, b = 0.2, 1.0
rows = []
for row in range(3):
row = []
for col in range(3):
box = EmptyBox(rnd(a, b), rnd(a, b), rnd(a, b), rnd(a, b))
row.append(box)
rows.append(row)
box = TableBox(rows)
yield box, "table-2"
#--------------------------------------------------
rows = []
for i in range(3):
row = []
for j in range(3):
box = TextBox(("xbcgef"[i + j]) * (i + 1) * (j + 1))
box = MarginBox(box, 0.1)
box = AlignBox(box, "north")
row.append(box)
row.append(EmptyBox(bot=1.))
rows.append(row)
box = TableBox(rows)
yield box, "table-3"
#--------------------------------------------------
a, b = 0.2, 2.0
rows = []
for row in range(2):
boxs = []
for col in range(2):
top = rnd(a, b)
bot = rnd(a, b)
left = rnd(a, b)
right = rnd(a, b)
box = EmptyBox(top, bot, left, right)
boxs.append(box)
boxs.append(TextBox("Hig%d !" % row))
box = HBox(boxs)
rows.append(box)
box = VBox(rows)
yield box, "table-4"