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from __future__ import with_statement
import unittest
from numpy import all, allclose, array, dtype, pi, ones
from kiva import agg
from kiva.fonttools import Font
class GraphicsContextArrayTestCase(unittest.TestCase):
def test_init(self):
gc = agg.GraphicsContextArray((100,100))
def test_init_bmp_equal_to_clear_bmp(self):
gc = agg.GraphicsContextArray((5,5))
gc2 = agg.GraphicsContextArray((5,5))
gc2.clear()
self.assert_((gc.bmp_array == gc2.bmp_array).all())
def test_init_with_bmp_doesnt_clear(self):
a = ones((5,5,4), dtype('uint8'))
gc = agg.GraphicsContextArray(a, pix_format='rgba32')
self.assert_((gc.bmp_array == a).all())
def test_save_restore_state(self):
gc = agg.GraphicsContextArray((100,100))
gc.save_state()
gc.restore_state()
def test_save_restore_state_for_ctm(self):
gc = agg.GraphicsContextArray((100,100))
m0 = agg.translation_matrix(10.0,10.0)
gc.set_ctm(m0)
gc.save_state()
m1 = agg.translation_matrix(5.0,5.0)
gc.set_ctm(m1)
m2 = gc.get_ctm()
self.assertEqual(tuple(m1), m2)
gc.restore_state()
m3 = gc.get_ctm()
self.assertEqual(tuple(m0), m3)
# !! Need some tests of other graphics state information on
# !! save/restore state
def test_save_restore_state_for_ttm(self):
# The interesting thing here is that we are verifying
# that the text transform matrix (TTM) is *not* saved
# with the graphics state.
gc = agg.GraphicsContextArray((100,100))
m0 = agg.translation_matrix(10.0,10.0)
gc.set_text_matrix(m0)
gc.save_state()
gc.set_text_matrix(agg.translation_matrix(5.0,5.0))
gc.restore_state()
m1 = gc.get_text_matrix()
self.assertNotEqual(m1, m0)
# !! Need some tests of other graphics state information on
# !! save/restore state
def test_context_manager(self):
gc = agg.GraphicsContextArray((100,100))
# Set some values.
gc.set_stroke_color((1,0,0,1))
gc.set_antialias(0)
gc.set_alpha(0.25)
with gc:
# Change the values in the current context.
gc.set_stroke_color((0,0,1,1))
self.assert_(all(gc.get_stroke_color() == (0,0,1,1)))
gc.set_antialias(1)
self.assertEqual(gc.get_antialias(), 1)
gc.set_alpha(0.75)
self.assertEqual(gc.get_alpha(), 0.75)
# Verify that we are back to the previous settings.
self.assert_(all(gc.get_stroke_color() == (1,0,0,1)))
self.assertEqual(gc.get_antialias(), 0)
self.assertEqual(gc.get_alpha(), 0.25)
def test_context_manager_nested(self):
gc = agg.GraphicsContextArray((100,100))
# Set some values.
gc.set_stroke_color((1,0,0,1))
gc.set_antialias(0)
gc.set_alpha(0.25)
with gc:
# Change the values in the current context.
gc.set_stroke_color((0,0,1,1))
self.assert_(all(gc.get_stroke_color() == (0,0,1,1)))
gc.set_antialias(1)
self.assertEqual(gc.get_antialias(), 1)
gc.set_alpha(0.75)
self.assertEqual(gc.get_alpha(), 0.75)
with gc:
# Change the values in the current context.
gc.set_stroke_color((1,0,1,1))
self.assert_(all(gc.get_stroke_color() == (1,0,1,1)))
gc.set_antialias(0)
self.assertEqual(gc.get_antialias(), 0)
gc.set_alpha(1.0)
self.assertEqual(gc.get_alpha(), 1.0)
# Verify that we are back to the previous settings.
self.assert_(all(gc.get_stroke_color() == (0,0,1,1)))
self.assertEqual(gc.get_antialias(), 1)
self.assertEqual(gc.get_alpha(), 0.75)
# Verify that we are back to the previous settings.
self.assert_(all(gc.get_stroke_color() == (1,0,0,1)))
self.assertEqual(gc.get_antialias(), 0)
self.assertEqual(gc.get_alpha(), 0.25)
def test_translate_ctm(self):
gc = agg.GraphicsContextArray((100, 100))
gc.translate_ctm(2.0, 2.0)
actual = gc.get_ctm()
desired = agg.translation_matrix(2.0, 2.0)
self.assertEqual(actual, tuple(desired))
def test_scale_ctm(self):
gc = agg.GraphicsContextArray((100,100))
gc.scale_ctm(2.0,2.0)
actual = gc.get_ctm()
desired = agg.scaling_matrix(2.0,2.0)
self.assertEqual(actual, tuple(desired))
def test_rotate_ctm(self):
gc = agg.GraphicsContextArray((100,100))
gc.rotate_ctm(pi/4.)
actual = gc.get_ctm()
desired = agg.rotation_matrix(pi/4.)
self.assertEqual(actual, tuple(desired))
def test_concat_ctm(self):
gc = agg.GraphicsContextArray((100,100))
gc.translate_ctm(2.0,2.0)
m0 = agg.scaling_matrix(2.0,2.0)
gc.concat_ctm(m0)
actual = gc.get_ctm()
m0.multiply(agg.translation_matrix(2.0,2.0))
desired = m0
self.assertEqual(actual, tuple(desired))
def test_begin_path(self):
gc = agg.GraphicsContextArray((100,100))
gc.move_to(1.0,1.0)
gc.begin_path()
path = gc._get_path()
pt, flag = path._vertex()
# !! should get this value from the agg enum value
desired = 0
self.assertEqual(flag, desired)
def test_move_to(self):
gc = agg.GraphicsContextArray((100, 100))
gc.move_to(1.0, 1.0)
path = gc._get_path()
actual, flag = path._vertex()
desired = array((1.0, 1.0))
self.assert_(allclose(actual, desired))
def test_move_to1(self):
gc = agg.GraphicsContextArray((100, 100))
gc.translate_ctm(1.0, 1.0)
gc.move_to(1.0, 1.0)
path = gc._get_path()
actual, flag = path._vertex()
desired = array((2.0, 2.0))
self.assert_(allclose(actual, desired))
def test_quad_curve_to(self):
gc = agg.GraphicsContextArray((100, 100))
ctrl = 1.0, 1.0
to = 2.0, 2.0
gc.quad_curve_to(ctrl[0], ctrl[1], to[0], to[1])
path = gc._get_path()
actual_ctrl, flag = path._vertex()
self.assertEqual(actual_ctrl, ctrl)
self.assertEqual(flag, 3)
actual_to, flag = path._vertex()
self.assertEqual(actual_to, to)
self.assertEqual(flag, 3)
def test_curve_to(self):
gc = agg.GraphicsContextArray((100, 100))
ctrl1 = 1.0, 1.0
ctrl2 = 2.0, 2.0
to = 3.0, 3.0
gc.curve_to(ctrl1[0], ctrl1[1], ctrl2[0], ctrl2[1], to[0], to[1])
path = gc._get_path()
actual_ctrl1, flag = path._vertex()
self.assertEqual(actual_ctrl1, ctrl1)
self.assertEqual(flag, 4)
actual_ctrl2, flag = path._vertex()
self.assertEqual(actual_ctrl2, ctrl2)
self.assertEqual(flag, 4)
actual_to, flag = path._vertex()
self.assertEqual(actual_to, to)
self.assertEqual(flag, 4)
def test_add_path(self):
path1 = agg.CompiledPath()
path1.move_to(1.0,1.0)
path1.translate_ctm(1.0,1.0)
path1.line_to(2.0,2.0) #actually (3.0,3.0)
path1.scale_ctm(2.0,2.0)
path1.line_to(2.0,2.0) # actually (5.0,5.0)
gc = agg.GraphicsContextArray((100,100))
gc.move_to(1.0,1.0)
gc.translate_ctm(1.0,1.0)
gc.line_to(2.0,2.0) #actually (3.0,3.0)
sub_path = agg.CompiledPath()
sub_path.scale_ctm(2.0,2.0)
sub_path.line_to(2.0,2.0)
gc.add_path(sub_path)
path2 = gc._get_path()
desired = path1._vertices()
actual = path2._vertices()
self.assert_(allclose(actual, desired))
desired = path1.get_ctm()
actual = path2.get_ctm()
self.assertEqual(actual, desired)
def base_lines(self, lines):
gc = agg.GraphicsContextArray((100, 100))
gc.move_to(1.0,1.0)
gc.line_to(2.0,2.0) #actually (3.0,3.0)
gc.lines(lines)
actual = gc._get_path()._vertices()
desired = array(((1.0,1.0,agg.path_cmd_move_to, agg.path_flags_none),
(2.0,2.0,agg.path_cmd_line_to, agg.path_flags_none),
(3.0,3.0,agg.path_cmd_move_to, agg.path_flags_none),
(4.0,4.0,agg.path_cmd_line_to, agg.path_flags_none),
(0.0,0.0,agg.path_cmd_stop, agg.path_flags_none),))
#print 'desired:', desired
#print 'actual:', actual
self.assert_(allclose(actual,desired))
def test_lines_array(self):
lines = array(((3.0,3.0),
(4.0,4.0)))
self.base_lines(lines)
def test_lines_list(self):
lines = [[3.0,3.0],
[4.0,4.0]]
self.base_lines(lines)
def base_rects(self,rects):
gc = agg.GraphicsContextArray((100, 100))
gc.rects(rects)
actual = gc._get_path()._vertices()
desired = array(((1.0,1.0,agg.path_cmd_move_to, agg.path_flags_none),
(1.0,2.0,agg.path_cmd_line_to, agg.path_flags_none),
(2.0,2.0,agg.path_cmd_line_to, agg.path_flags_none),
(2.0,1.0,agg.path_cmd_line_to, agg.path_flags_none),
(0.0,0.0,agg.path_cmd_end_poly, agg.path_flags_close),
(2.0,2.0,agg.path_cmd_move_to, agg.path_flags_none),
(2.0,3.0,agg.path_cmd_line_to, agg.path_flags_none),
(3.0,3.0,agg.path_cmd_line_to, agg.path_flags_none),
(3.0,2.0,agg.path_cmd_line_to, agg.path_flags_none),
(0.0,0.0,agg.path_cmd_end_poly, agg.path_flags_close),
(0.0,0.0,agg.path_cmd_stop, agg.path_flags_none),))
self.assertTrue(allclose(actual,desired))
def test_rects_array(self):
rects = array(((1.0,1.0,1.0,1.0),
(2.0,2.0,1.0,1.0)))
self.base_rects(rects)
def test_rects_list(self):
rects = [[1.0,1.0,1.0,1.0],
[2.0,2.0,1.0,1.0]]
self.base_rects(rects)
def test_rect(self):
gc = agg.GraphicsContextArray((100,100))
gc.rect(1.0,1.0,1.0,1.0)
actual = gc._get_path()._vertices()
desired = array(((1.0,1.0,agg.path_cmd_move_to, agg.path_flags_none),
(1.0,2.0,agg.path_cmd_line_to, agg.path_flags_none),
(2.0,2.0,agg.path_cmd_line_to, agg.path_flags_none),
(2.0,1.0,agg.path_cmd_line_to, agg.path_flags_none),
(0.0,0.0,agg.path_cmd_end_poly, agg.path_flags_close),
(0.0,0.0,agg.path_cmd_stop, agg.path_flags_none),))
self.assertTrue(allclose(actual,desired))
def test_clip_to_rect(self):
gc = agg.GraphicsContextArray((10,10))
gc.move_to(0,0)
gc.line_to(10,10)
gc.clip_to_rect(5,5,5,5)
gc.stroke_path()
#print 'clipping on'
#print gc.bmp_array[:,:,0]
# make sure nothing was drawn in the corner
self.assertEqual(gc.bmp_array[-1,0,0], 255)
def test_stroke_path(self):
gc = agg.GraphicsContextArray((5,5))
gc.move_to(0,0)
gc.line_to(5,5)
gc.stroke_path()
#print
#print "stroke lower-left to upper-right:"
#print gc.bmp_array[:,:,0]
# assert the lower left and upper corner are the same,
# and have something drawn in them.
self.assertEqual(gc.bmp_array[-1,0,0], gc.bmp_array[0,-1,0])
self.assertNotEqual(gc.bmp_array[-1,0,0], 255)
def test_set_get_text_position(self):
#print 'testing text position'
gc = agg.GraphicsContextArray((5,5))
gc.set_text_position(1,1)
actual = gc.get_text_position()
desired = (1,1)
self.assertTrue(allclose(actual,desired))
def test_get_set_font(self):
gc = agg.GraphicsContextArray((5,5))
font1 = Font('modern')
gc.set_font(font1)
font3 = gc.get_font()
self.assertEqual(font1.face_name, font3.name)
self.assertEqual(font1.size, font3.size)
self.assertEqual(font1.family, font3.family)
self.assertEqual(font1.style, font3.style)
self.assertEqual(font1.encoding, font3.encoding)
def test_set_line_dash_none(self):
gc = agg.GraphicsContextArray((5,5))
gc.set_line_dash(None)
# !! need to add an accessor to test result
def test_set_line_dash_list(self):
gc = agg.GraphicsContextArray((5,5))
gc.set_line_dash([2,3])
# !! need to add an accessor to test result
def test_set_line_dash_2d_list(self):
gc = agg.GraphicsContextArray((5,5))
try:
gc.set_line_dash([[2,3],[2,3]])
except TypeError:
pass
if __name__ == "__main__":
unittest.main()
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