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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2017-18 Richard Hull and contributors
# See LICENSE.rst for details.
"""
Tests for the :py:class:`luma.core.virtual.viewport` class and associated
helpers.
"""
import time
from PIL import Image
import pytest
from luma.core.device import dummy
from luma.core.render import canvas
from luma.core.virtual import range_overlap, hotspot, snapshot, viewport
import baseline_data
from helpers import get_reference_image, assert_identical_image
def overlap(box1, box2):
l1, t1, r1, b1 = box1
l2, t2, r2, b2 = box2
return range_overlap(l1, r1, l2, r2) and range_overlap(t1, b1, t2, b2)
box1 = [0, 0, 64, 64]
box2 = [64, 0, 128, 64]
box3 = [128, 0, 192, 64]
box4 = [192, 0, 256, 64]
def test_range_overlap_over12():
viewport = [0, 0, 128, 64]
assert overlap(viewport, box1) is True
assert overlap(viewport, box2) is True
assert overlap(viewport, box3) is False
assert overlap(viewport, box4) is False
def test_range_overlap_over123():
viewport = [30, 0, 158, 64]
assert overlap(viewport, box1) is True
assert overlap(viewport, box2) is True
assert overlap(viewport, box3) is True
assert overlap(viewport, box4) is False
def test_range_overlap_over23():
viewport = [64, 0, 192, 64]
assert overlap(viewport, box1) is False
assert overlap(viewport, box2) is True
assert overlap(viewport, box3) is True
assert overlap(viewport, box4) is False
def test_range_overlap_over234():
viewport = [100, 0, 228, 64]
assert overlap(viewport, box1) is False
assert overlap(viewport, box2) is True
assert overlap(viewport, box3) is True
assert overlap(viewport, box4) is True
def test_range_overlap_over34():
viewport = [128, 0, 256, 64]
assert overlap(viewport, box1) is False
assert overlap(viewport, box2) is False
assert overlap(viewport, box3) is True
assert overlap(viewport, box4) is True
def test_range_overlap_over4():
viewport = [192, 0, 256, 64]
assert overlap(viewport, box1) is False
assert overlap(viewport, box2) is False
assert overlap(viewport, box3) is False
assert overlap(viewport, box4) is True
def test_range_overlap_over_none():
viewport = [256, 0, 384, 64]
assert overlap(viewport, box1) is False
assert overlap(viewport, box2) is False
assert overlap(viewport, box3) is False
assert overlap(viewport, box4) is False
def test_snapshot_last_updated():
interval = 0.5
def draw_fn(draw, width, height):
assert height == 10
assert width == 10
sshot = snapshot(10, 10, draw_fn, interval)
assert sshot.last_updated == -interval
assert sshot.should_redraw() is True
sshot.paste_into(Image.new("RGB", (10, 10)), (0, 0))
assert sshot.should_redraw() is False
time.sleep(interval * 1.5)
assert sshot.should_redraw() is True
sshot.paste_into(Image.new("RGB", (10, 10)), (0, 0))
assert sshot.last_updated > 0.0
assert sshot.should_redraw() is False
def test_viewport_set_position():
pytest.skip()
img_path = get_reference_image('set_position.png')
with open(img_path, 'rb') as p:
reference = Image.open(p)
device = dummy()
virtual = viewport(device, 200, 200)
# Use the same drawing primitives as the demo
with canvas(virtual) as draw:
baseline_data.primitives(virtual, draw)
virtual.set_position((20, 30))
assert_identical_image(reference, device.image, img_path)
def test_viewport_hotspot():
img_path = get_reference_image('hotspot.png')
with open(img_path, 'rb') as p:
reference = Image.open(p)
device = dummy()
virtual = viewport(device, 200, 200)
def draw_fn(draw, width, height):
baseline_data.primitives(device, draw)
widget = hotspot(device.width, device.height, draw_fn)
virtual.add_hotspot(widget, (19, 56))
virtual.set_position((28, 30))
virtual.remove_hotspot(widget, (19, 56))
#assert_identical_image(reference, device.image, img_path)
def test_viewport_dithering():
img_path = get_reference_image('hotspot_dither.png')
with open(img_path, 'rb') as p:
reference = Image.open(p)
device = dummy(mode="1")
virtual = viewport(device, 200, 200, mode='RGBA', dither=True)
def draw_fn(draw, width, height):
draw.rectangle((0, 0, width / 2, height / 2), fill="red")
draw.rectangle((width / 2, 0, width, height / 2), fill="yellow")
draw.rectangle((0, height / 2, width / 2, height), fill="blue")
draw.rectangle((width / 2, height / 2, width, height), fill="white")
widget = hotspot(device.width, device.height, draw_fn)
virtual.add_hotspot(widget, (19, 56))
virtual.set_position((28, 30))
virtual.remove_hotspot(widget, (19, 56))
assert_identical_image(reference, device.image, img_path)
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