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# -*- coding: utf-8 -*-
"""
Tests for ColorbarVisual
All images are of size (100,100) to keep a small file size
"""
from vispy.scene import visuals
from vispy.testing import (requires_application, TestingCanvas,
run_tests_if_main, raises)
from vispy.testing.image_tester import assert_image_approved
def create_colorbar(pos, size, orientation, label='label string here'):
colorbar = visuals.ColorBar(pos=pos,
size=size,
orientation=orientation,
label=label,
cmap='autumn',
border_color='white',
border_width=2)
colorbar.label.color = 'white'
colorbar.label.font_size = 5
colorbar.ticks[0].color = 'white'
colorbar.ticks[0].font_size = 5
colorbar.ticks[1].color = 'white'
colorbar.ticks[1].font_size = 5
return colorbar
@requires_application()
def test_colorbar_draw():
"""Test drawing Colorbar without transform using ColorbarVisual"""
with TestingCanvas() as c:
colorbar_top = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='top')
c.draw_visual(colorbar_top)
assert_image_approved(c.render(), 'visuals/colorbar/top.png')
colorbar_top.parent = None
colorbar_bottom = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='bottom')
c.draw_visual(colorbar_bottom)
assert_image_approved(c.render(), 'visuals/colorbar/bottom.png')
colorbar_bottom.parent = None
colorbar_left = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='left')
c.draw_visual(colorbar_left)
assert_image_approved(c.render(), 'visuals/colorbar/left.png')
colorbar_left.parent = None
colorbar_right = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='right')
c.draw_visual(colorbar_right)
assert_image_approved(c.render(), 'visuals/colorbar/right.png')
@requires_application()
def test_reactive_draw():
"""Test reactive RectPolygon attributes"""
with TestingCanvas() as c:
colorbar = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='top')
c.draw_visual(colorbar)
colorbar.cmap = "ice"
assert_image_approved(c.render(),
'visuals/colorbar/reactive_cmap.png')
colorbar.clim = (-20, 20)
assert_image_approved(c.render(),
'visuals/colorbar/reactive_clim.png')
colorbar.label.text = "new label"
assert_image_approved(c.render(),
'visuals/colorbar/reactive_label.png')
colorbar.ticks[0].color = "red"
colorbar.ticks[1].color = "blue"
assert_image_approved(c.render(),
'visuals/colorbar/reactive_ticks.png')
colorbar.border_width = 0
assert_image_approved(c.render(),
'visuals/colorbar/reactive_border_width.png')
colorbar.border_width = 5
colorbar.border_color = "red"
assert_image_approved(c.render(),
'visuals/colorbar/reactive_border_color.png')
@requires_application()
def test_attributes():
"""Test if attribute checks are in place"""
with TestingCanvas():
# initialize with major axis < minor axis
with raises(ValueError):
create_colorbar(pos=(50, 50),
size=(1, 30),
orientation='top')
# set major axis to 0
with raises(ValueError):
create_colorbar(pos=(50, 50),
size=(0, 1),
orientation='right')
# set negative major axis
with raises(ValueError):
create_colorbar(pos=(50, 50),
size=(-10, 1),
orientation='right')
# set negative minor axis
with raises(ValueError):
create_colorbar(pos=(50, 50),
size=(1, -10),
orientation='right')
# set minor axis to 0
with raises(ValueError):
create_colorbar(pos=(50, 50),
size=(1, 0),
orientation='right')
# set invalid orientation
with raises(ValueError):
create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='top-invalid')
@requires_application()
def test_colorbar_label_change():
with TestingCanvas() as c:
colorbar = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='top')
colorbar.cmap = "ice"
orig_text_vis = colorbar.label
colorbar.label = "New Label"
assert colorbar.label.text == "New Label"
assert colorbar.label is orig_text_vis
c.draw_visual(colorbar)
@requires_application()
def test_colorbar_label_as_textvisual():
with TestingCanvas() as c:
label = visuals.Text("my label")
colorbar = create_colorbar(pos=(50, 50),
size=(60, 4),
orientation='top',
label=label)
colorbar.cmap = "ice"
assert colorbar.label.text == "my label"
assert colorbar.label is label
c.draw_visual(colorbar)
run_tests_if_main()
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