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import cairo
import pytest
def test_raster_source():
pattern = cairo.RasterSourcePattern(cairo.Content.COLOR, 2, 2)
assert isinstance(pattern, cairo.RasterSourcePattern)
assert issubclass(cairo.RasterSourcePattern, cairo.Pattern)
with pytest.raises(TypeError):
cairo.RasterSourcePattern(object())
was_called = []
def acquire_callback(target, extents):
surface = target.create_similar_image(
cairo.FORMAT_ARGB32, extents.width, extents.height)
surface.set_device_offset(extents.x, extents.y)
context = cairo.Context(surface)
context.set_source_rgb(1, 0, 0)
context.paint()
was_called.append("acquire")
return surface
def release_callback(surface):
was_called.append("release")
return None
with pytest.raises(TypeError):
pattern.set_acquire()
pattern.set_acquire(None, release_callback)
assert pattern.get_acquire() == (None, release_callback)
pattern.set_acquire(acquire_callback, None)
assert pattern.get_acquire() == (acquire_callback, None)
pattern.set_acquire(None, None)
assert pattern.get_acquire() == (None, None)
pattern.set_acquire(acquire_callback, release_callback)
assert pattern.get_acquire() == (acquire_callback, release_callback)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
context = cairo.Context(surface)
context.set_source(pattern)
context.paint()
assert was_called == ["acquire", "release"]
with pytest.raises(TypeError):
pattern.set_acquire(None, object())
with pytest.raises(TypeError):
pattern.set_acquire(object(), None)
def test_cmp_hash():
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
context = cairo.Context(surface)
pattern = context.get_source()
other = context.get_source()
assert pattern == other
assert not pattern != other
def test_get_extend():
pattern = cairo.SolidPattern(1, 2, 4)
assert pattern.get_extend() == cairo.Extend.PAD
assert isinstance(pattern.get_extend(), cairo.Extend)
def test_get_filter():
pattern = cairo.SolidPattern(1, 2, 4)
assert pattern.get_filter() == cairo.Filter.GOOD
def test_linear_gradient():
with pytest.raises(TypeError):
cairo.LinearGradient()
def test_radial_gradient():
with pytest.raises(TypeError):
cairo.RadialGradient()
def test_gradient_get_color_stops():
pattern = cairo.LinearGradient(1, 2, 4, 5)
assert pattern.get_color_stops_rgba() == []
pattern.add_color_stop_rgb(0.125, 0.25, 0.5, 0.75)
assert pattern.get_color_stops_rgba() == [(0.125, 0.25, 0.5, 0.75, 1.0)]
pattern.add_color_stop_rgba(1.0, 0.75, 0.5, 0.25, 0.125)
assert pattern.get_color_stops_rgba() == \
[(0.125, 0.25, 0.5, 0.75, 1.0), (1.0, 0.75, 0.5, 0.25, 0.125)]
def test_gradient_add_color_stop_rgb():
pattern = cairo.LinearGradient(1, 2, 4, 5)
with pytest.raises(TypeError):
pattern.add_color_stop_rgb()
def test_gradient_add_color_stop_rgba():
pattern = cairo.LinearGradient(1, 2, 4, 5)
with pytest.raises(TypeError):
pattern.add_color_stop_rgba()
def test_solid_pattern():
with pytest.raises(TypeError):
cairo.SolidPattern()
def test_mesh_pattern():
mesh = cairo.MeshPattern()
assert isinstance(mesh, cairo.MeshPattern)
assert issubclass(cairo.MeshPattern, cairo.Pattern)
with pytest.raises(TypeError):
cairo.MeshPattern(object())
def test_mesh_pattern_example1():
pattern = cairo.MeshPattern()
assert pattern.get_patch_count() == 0
pattern.begin_patch()
pattern.move_to(0, 0)
pattern.curve_to(30, -30, 60, 30, 100, 0)
pattern.curve_to(60, 30, 130, 60, 100, 100)
pattern.curve_to(60, 70, 30, 130, 0, 100)
pattern.curve_to(30, 70, -30, 30, 0, 0)
pattern.set_corner_color_rgb(0, 1, 0, 0)
pattern.set_corner_color_rgb(1, 0, 1, 0)
pattern.set_corner_color_rgb(2, 0, 0, 1)
pattern.set_corner_color_rgb(3, 1, 1, 0)
pattern.end_patch()
assert pattern.get_patch_count() == 1
assert pattern.get_path(0)
assert pattern.get_corner_color_rgba(0, 0) == (1, 0, 0, 1)
with pytest.raises(cairo.Error):
pattern.get_corner_color_rgba(1, 0)
with pytest.raises(cairo.Error):
pattern.get_corner_color_rgba(0, 9)
with pytest.raises(cairo.Error):
pattern.get_path(9)
def test_mesh_pattern_curve_to():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.curve_to(object())
def test_mesh_pattern_get_control_point():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.get_control_point(object())
def test_mesh_pattern_get_corner_color_rgba():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.get_corner_color_rgba(object())
def test_mesh_pattern_get_path():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.get_path(object())
def test_mesh_pattern_line_to():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.line_to(object())
def test_mesh_pattern_move_to():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.move_to(object())
def test_mesh_pattern_set_control_point():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.set_control_point(object())
def test_mesh_pattern_set_corner_color_rgb():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.set_corner_color_rgb(object())
def test_mesh_pattern_set_corner_color_rgba():
pattern = cairo.MeshPattern()
with pytest.raises(TypeError):
pattern.set_corner_color_rgba(object())
def test_mesh_pattern_example2():
pattern = cairo.MeshPattern()
pattern.begin_patch()
pattern.move_to(100, 100)
pattern.line_to(130, 130)
pattern.line_to(130, 70)
pattern.set_corner_color_rgb(0, 1, 0, 0)
pattern.set_corner_color_rgb(1, 0, 1, 0)
pattern.set_corner_color_rgb(2, 0, 0, 1)
pattern.end_patch()
def test_mesh_pattern_rest():
pattern = cairo.MeshPattern()
pattern.begin_patch()
pattern.curve_to(0, 1, 2, 3, 4, 5)
pattern.set_corner_color_rgba(0, 0.125, 0.25, 0.5, 0.75)
pattern.set_control_point(0, 10, 12)
pattern.end_patch()
assert pattern.get_corner_color_rgba(0, 0) == (0.125, 0.25, 0.5, 0.75)
assert pattern.get_control_point(0, 0) == (10, 12)
pattern.get_control_point(0, 0)
with pytest.raises(cairo.Error):
pattern.get_control_point(1, 0)
with pytest.raises(cairo.Error):
pattern.get_control_point(0, 9)
def test_mesh_pattern_error_states():
pattern = cairo.MeshPattern()
pattern.begin_patch()
with pytest.raises(cairo.Error):
pattern.begin_patch()
with pytest.raises(cairo.Error):
cairo.MeshPattern().end_patch()
with pytest.raises(cairo.Error):
cairo.MeshPattern().curve_to(0, 1, 2, 3, 4, 5)
with pytest.raises(cairo.Error):
cairo.MeshPattern().line_to(130, 130)
with pytest.raises(cairo.Error):
cairo.MeshPattern().move_to(0, 0)
with pytest.raises(cairo.Error):
cairo.MeshPattern().set_corner_color_rgba(0, 0.125, 0.25, 0.5, 0.75)
with pytest.raises(cairo.Error):
cairo.MeshPattern().set_corner_color_rgb(0, 0.125, 0.25, 0.5)
def test_get_matrix():
pattern = cairo.SolidPattern(1, 2, 4)
assert isinstance(pattern.get_matrix(), cairo.Matrix)
pattern.set_matrix(cairo.Matrix())
with pytest.raises(TypeError):
pattern.set_matrix(object())
def test_set_extend():
pattern = cairo.SolidPattern(1, 2, 4)
pattern.set_extend(42)
assert pattern.get_extend() == 42
with pytest.raises(TypeError):
pattern.set_extend(object())
def test_set_filter():
pattern = cairo.SolidPattern(1, 2, 4)
with pytest.raises(TypeError):
pattern.set_filter(object())
def test_pattern():
with pytest.raises(TypeError):
cairo.Pattern()
r, g, b, a = 0.1, 0.2, 0.3, 0.4
p = cairo.SolidPattern(r, g, b, a)
assert p.get_rgba() == (r, g, b, a)
assert not p == object()
hash(p)
with pytest.raises(TypeError):
cairo.Gradient()
x0, y0, x1, y1 = 0.0, 0.0, 0.0, 1.0
p = cairo.LinearGradient(x0, y0, x1, y1)
assert p.get_linear_points() == (x0, y0, x1, y1)
p.add_color_stop_rgba(1, 0, 0, 0, 1)
p.add_color_stop_rgba(0, 1, 1, 1, 1)
cx0, cy0, radius0, cx1, cy1, radius1 = 1.0, 1.0, 1.0, 2.0, 2.0, 1.0
p = cairo.RadialGradient(cx0, cy0, radius0, cx1, cy1, radius1)
assert p.get_radial_circles() == (cx0, cy0, radius0, cx1, cy1, radius1)
p.add_color_stop_rgba(0, 1, 1, 1, 1)
p.add_color_stop_rgba(1, 0, 0, 0, 1)
def test_pattern_filter():
pattern = cairo.SolidPattern(1, 2, 3)
assert pattern.get_filter() == cairo.FILTER_GOOD
pattern.set_filter(cairo.FILTER_NEAREST)
assert pattern.get_filter() == cairo.FILTER_NEAREST
def test_surface_pattern():
with pytest.raises(TypeError):
cairo.SurfacePattern(object())
@pytest.mark.skipif(not hasattr(cairo.Pattern, "set_dither"),
reason="too old cairo")
def test_pattern_dither():
pattern = cairo.SolidPattern(1, 2, 3)
pattern.get_dither() == cairo.Dither.DEFAULT
pattern.set_dither(cairo.Dither.BEST)
assert pattern.get_dither() == cairo.Dither.BEST
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