def main():
gc = GraphicsContext((500, 500))
gc.scale_ctm(1.25, 1.25)
draw(gc)
gc.save(splitext(__file__)[0]+'.png', file_format='png')
def rect():
gc = GraphicsContext((500, 500))
gc.clear()
gc.rect(100, 100, 300, 300)
gc.draw_path()
file_path = tempfile.mktemp(suffix='.bmp')
gc.save(file_path)
return file_path
def save(self, path):
""" Save the contents of the component to a file.
"""
# 100 DPI dimensions of the Macbook Pro 15"
size = (1435, 982)
gc = GraphicsContext(size)
self.component.draw(gc)
gc.save(path)
def test_add_to_path(self):
path = CompiledPath()
path.begin_path()
path.move_to(-5, -5)
path.line_to(-5, 5)
path.line_to(5, 5)
path.line_to(5, -5)
path.line_to(-5, -5)
marker = CustomMarker(path=path)
gc = GraphicsContext((50, 50))
# should not fail
marker.add_to_path(gc.get_empty_path(), np.int64(0))
def test_bad_image_size(self):
arr = np.array([[1, 2], [3, 4]], dtype=np.uint8)
gc = GraphicsContext((50, 50))
# The draw_image methods expects its first argument
# to be a 3D whose last dimension has length 3 or 4.
# Passing in arr should raise a value error.
self.assertRaises(ValueError, gc.draw_image, arr)
# Pass in a 3D array, but with an invalid size in the last dimension.
self.assertRaises(ValueError, gc.draw_image, arr.reshape(2, 2, 1))
def gradient():
gc = GraphicsContext((500, 500))
gc.scale_ctm(1.25, 1.25)
draw(gc)
file_path = tempfile.mktemp(suffix='.png')
gc.save(file_path, file_format='png')
return file_path
def main():
gc = GraphicsContext((500, 500))
gc.scale_ctm(1.25, 1.25)
draw(gc)
gc.save(splitext(__file__)[0] + '.png', file_format='png')
font = Font(face_name="Arial", size=32)
gc.set_font(font)
gc.translate_ctm(100.0, 100.0)
gc.move_to(-5, 0)
gc.line_to(5, 0)
gc.move_to(0, 5)
gc.line_to(0, -5)
gc.move_to(0, 0)
gc.stroke_path()
txtRot = agg.rotation_matrix(PI / 6)
gc.set_text_matrix(txtRot)
gc.show_text("Hello")
txtRot.invert()
gc.set_text_matrix(txtRot)
gc.show_text("inverted")
if __name__ == "__main__":
tests = (
(test_clip_stack, "clip_stack.png"),
(test_arc_to, "arc_to.png"),
(test_handling_text, "handling_text.png"),
)
for test_func, filename in tests:
img = GraphicsContext((800, 600))
img.clear(WHITE)
test_func(img)
img.save(filename)
def test_clip_stack(gc):
sub_windows = ((10.5, 250, 200, 200),
(220.5, 250, 200, 200),
(430.5, 250, 200, 200),
(10.5, 10, 200, 200),
(220.5, 10, 200, 200),
(430.5, 10, 200, 200))
gc.set_line_width(2)
gc.set_stroke_color(black)
gc.rects(sub_windows)
gc.stroke_path()
img = GraphicsContext((200, 200))
main_rects = ((40.5, 30.5, 120, 50),
(40.5, 120.5, 120, 50))
disjoint_rects = ((60.5, 115.5, 80, 15),
(60.5, 70.5, 80, 15))
vert_rect = (60.5, 10.5, 55, 180)
# Draw the full image
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[0])
img.clear()
# First clip
img.clip_to_rects(main_rects)
draw_sub_image(img, 200, 200);
gc.draw_image(img, sub_windows[1])
# Second Clip
with img:
img.clear()
img.clip_to_rects(main_rects)
img.clip_to_rect(*vert_rect)
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[2])
# Pop back to first clip
img.clear()
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[3])
# Adding a disjoing set of rects
img.clear()
with img:
img.clip_to_rects(main_rects)
img.clip_to_rects(disjoint_rects)
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[4])
# Pop back to first clip
img.clear()
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[5])
def test_handling_text(gc):
font = Font(face_name="Arial", size = 32)
gc.set_font(font)
gc.translate_ctm(100.0, 100.0)
gc.move_to(-5,0)
gc.line_to(5,0)
gc.move_to(0,5)
gc.line_to(0,-5)
gc.move_to(0,0)
gc.stroke_path()
txtRot = agg.rotation_matrix(PI/6)
gc.set_text_matrix(txtRot)
gc.show_text("Hello")
txtRot.invert()
gc.set_text_matrix(txtRot)
gc.show_text("inverted")
if __name__ == "__main__":
tests = ((test_clip_stack, "clip_stack.png"),
(test_arc_to, "arc_to.png"),
(test_handling_text, "handling_text.png"))
for test_func, filename in tests:
img = GraphicsContext((800, 600))
img.clear(white)
test_func(img)
img.save(filename)
def simple():
gc = GraphicsContext((100, 100))
gc.clear()
gc.set_line_cap(constants.CAP_SQUARE)
gc.set_line_join(constants.JOIN_MITER)
gc.set_stroke_color((1, 0, 0))
gc.set_fill_color((0, 0, 1))
gc.rect(0, 0, 30, 30)
gc.draw_path()
file_path = tempfile.mktemp(suffix='.bmp')
gc.save(file_path)
return file_path
def test_bad_image_shape(self):
arr = np.array([[1, 2], [3, 4]], dtype=np.uint8)
gc = GraphicsContext((50, 50))
# Pass in a 3D array, but with an invalid size in the last dimension.
self.assertRaises(ValueError, gc.draw_image, arr.reshape(2, 2, 1))
def stars():
gc = GraphicsContext((500, 500))
gc.translate_ctm(250, 300)
add_star(gc)
gc.draw_path()
gc.translate_ctm(0, -100)
add_star(gc)
gc.set_fill_color((0.0, 0.0, 1.0))
gc.draw_path(constants.EOF_FILL_STROKE)
file_path = tempfile.mktemp(suffix='.bmp')
gc.save(file_path)
return file_path
def stars():
gc = GraphicsContext((500, 500))
with gc:
gc.set_alpha(0.3)
gc.set_stroke_color((1.0, 0.0, 0.0))
gc.set_fill_color((0.0, 1.0, 0.0))
for i in range(0, 600, 5):
with gc:
gc.translate_ctm(i, i)
gc.rotate_ctm(i * pi / 180.)
add_star(gc)
gc.draw_path()
gc.set_fill_color((0.5, 0.5, 0.5, 0.4))
gc.rect(150, 150, 200, 200)
gc.fill_path()
file_path = tempfile.mktemp(suffix='.bmp')
gc.save(file_path)
return file_path
def test_clip_stack(gc):
sub_windows = (
(10.5, 250, 200, 200),
(220.5, 250, 200, 200),
(430.5, 250, 200, 200),
(10.5, 10, 200, 200),
(220.5, 10, 200, 200),
(430.5, 10, 200, 200),
)
gc.set_line_width(2)
gc.set_stroke_color(BLACK)
gc.rects(sub_windows)
gc.stroke_path()
img = GraphicsContext((200, 200))
main_rects = ((40.5, 30.5, 120, 50), (40.5, 120.5, 120, 50))
disjoint_rects = ((60.5, 115.5, 80, 15), (60.5, 70.5, 80, 15))
vert_rect = (60.5, 10.5, 55, 180)
# Draw the full image
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[0])
img.clear()
# First clip
img.clip_to_rects(main_rects)
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[1])
# Second Clip
with img:
img.clear()
img.clip_to_rects(main_rects)
img.clip_to_rect(*vert_rect)
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[2])
# Pop back to first clip
img.clear()
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[3])
# Adding a disjoing set of rects
img.clear()
with img:
img.clip_to_rects(main_rects)
img.clip_to_rects(disjoint_rects)
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[4])
# Pop back to first clip
img.clear()
draw_sub_image(img, 200, 200)
gc.draw_image(img, sub_windows[5])
from enable.kiva_graphics_context import GraphicsContext
gc = GraphicsContext((500,500))
gc.clear()
gc.rect(100,100,300,300)
gc.draw_path()
gc.save("rect.bmp")
def simple():
gc = GraphicsContext((499, 500))
gc.set_fill_color((0, 0, 0))
gc.rect(99, 100, 300, 300)
gc.draw_path()
gc.save(tempfile.mktemp(suffix=".bmp"))
# directly manipulate the underlying Numeric array.
# The color tuple is expressed as BGRA.
gc.bmp_array[:99, :100] = (139, 60, 71, 255)
file_path = tempfile.mktemp(suffix='.bmp')
gc.save(file_path)
return file_path