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#------------------------------------------------------------------------------
# Copyright (c) 2019-2024, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
"""Test the image view widget."""
from utils import compile_source, wait_for_window_displayed
SOURCE ="""
import os
from enaml.image import Image
from enaml.widgets.api import Window, Container, ImageView
def image_path(name):
dirname = os.path.dirname(r"%s")
return os.path.join(dirname, 'images', name)
with open(image_path('img1.png'), 'rb') as f:
IMAGES = {
'None': None,
'Image A': Image(data=f.read()),
}
enamldef Main(Window):
attr img_name = 'None'
alias view: img
Container:
ImageView: img:
image << IMAGES[img_name]
""" % __file__
def test_displaying_no_image(enaml_qtbot, enaml_sleep):
"""Test that we can set the image attribute to None.
"""
win = compile_source(SOURCE, 'Main')()
win.show()
wait_for_window_displayed(enaml_qtbot, win)
enaml_qtbot.wait(enaml_sleep)
win.img_name = 'Image A'
enaml_qtbot.wait(enaml_sleep)
# XXX The following test require to compare to a reference image since we
# cannot access the size of the painted area to ensure that scaling was done
# properly
# @pytest.mark.parametrize('factor', [0.5, 2])
# def test_refuse_to_scale(enaml_qtbot, enaml_sleep, factor):
# """Test that we do not scale the image if scale_to_fit is False.
# """
# win = compile_source(SOURCE, 'Main')()
# win.img_name = 'Image A'
# win.show()
# wait_for_window_displayed(enaml_qtbot, win)
# img_size = win.view.proxy.widget.size()
# size = win.size()
# win.set_size((size.width*factor, size.height*factor))
# enaml_qtbot.wait(enaml_sleep)
# new_img_size = win.view.proxy.widget.size()
# assert new_img_size.width() == img_size.width()
# assert new_img_size.height() == img_size.height()
# @pytest.mark.parametrize('preserve_aspect_ratio', [False, True])
# def test_downscale(enaml_qtbot, enaml_sleep, preserve_aspect_ratio):
# """Test that scale_to_fit will allow to downscale the image.
# """
# win = compile_source(SOURCE, 'Main')()
# win.img_name = 'Image A'
# win.view.scale_to_fit = True
# win.view.preserve_aspect_ratio = preserve_aspect_ratio
# win.show()
# wait_for_window_displayed(enaml_qtbot, win)
# img_size = win.view.proxy.widget.size()
# size = win.size()
# win.set_size((size.width*0.2, size.height*0.5))
# enaml_qtbot.wait(enaml_sleep)
# new_img_size = win.view.proxy.widget.size()
# assert new_img_size.width() < img_size.width()
# assert new_img_size.height() < img_size.height()
# if preserve_aspect_ratio:
# assert new_img_size.width()/new_img_size.height() ==\
# img_size.width()/img_size.height()
# else:
# assert new_img_size.width()/new_img_size.height() !=\
# img_size.width()/img_size.height()
# @pytest.mark.parametrize('preserve_aspect_ratio', [False, True])
# @pytest.mark.parametrize('allow_upscaling', [False, True])
# def test_upscale(enaml_qtbot, enaml_sleep, preserve_aspect_ratio,
# allow_upscaling):
# """Test that scale_to_fit and allow_upscaling allow to upscale.
# """
# win = compile_source(SOURCE, 'Main')()
# win.img_name = 'Image A'
# win.view.scale_to_fit = True
# win.view.preserve_aspect_ratio = preserve_aspect_ratio
# win.show()
# wait_for_window_displayed(enaml_qtbot, win)
# img_size = win.view.proxy.widget.size()
# size = win.size()
# win.set_size((size.width*2, size.height*4))
# enaml_qtbot.wait(enaml_sleep)
# new_img_size = win.view.proxy.widget.size()
# if allow_upscaling:
# assert new_img_size.width() > img_size.width()
# assert new_img_size.height() > img_size.height()
# else:
# assert new_img_size.width() == img_size.width()
# assert new_img_size.height() == img_size.height()
# if preserve_aspect_ratio:
# assert new_img_size.width()/new_img_size.height() ==\
# img_size.width()/img_size.height()
# else:
# assert new_img_size.width()/new_img_size.height() !=\
# img_size.width()/img_size.height()
|
