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import logging
from pathlib import Path
from fpdf import FPDF
from test.conftest import assert_pdf_equal, ensure_rss_memory_below
from PIL import Image
HERE = Path(__file__).resolve().parent
IMAGE_PATH = HERE / "png_images/6c853ed9dacd5716bc54eb59cec30889.png"
MAX_MEMORY_MB = 12 # memory usage depends on Python version
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_warn(caplog):
pdf = FPDF()
pdf.oversized_images = "WARN"
pdf.add_page()
pdf.image(IMAGE_PATH, w=50)
assert "OVERSIZED" in caplog.text
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_downscale_simple(caplog, tmp_path):
caplog.set_level(logging.DEBUG)
pdf = FPDF()
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(IMAGE_PATH, w=50)
assert "OVERSIZED: Generated new low-res image" in caplog.text
assert len(pdf.image_cache.images) == 2, pdf.image_cache.images.keys()
in_use_img_names = _in_use_img_names(pdf)
assert len(in_use_img_names) == 1, pdf.image_cache.images.keys()
assert_pdf_equal(pdf, HERE / "oversized_images_downscale_simple.pdf", tmp_path)
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_downscale_twice(tmp_path):
pdf = FPDF()
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(IMAGE_PATH, w=50)
pdf.image(IMAGE_PATH, w=50)
assert len(pdf.image_cache.images) == 2, pdf.image_cache.images.keys()
in_use_img_names = _in_use_img_names(pdf)
assert len(in_use_img_names) == 1, pdf.image_cache.images.keys()
assert_pdf_equal(pdf, HERE / "oversized_images_downscale_twice.pdf", tmp_path)
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_downscaled_and_highres():
pdf = FPDF()
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(IMAGE_PATH, w=50)
pdf.image(IMAGE_PATH, w=pdf.epw)
count_of_images_in_cache = len(pdf.image_cache.images)
assert count_of_images_in_cache == 2, pdf.image_cache.images.keys()
# Not calling assert_pdf_equal to avoid storing a large binary (1.4M) in this git repo
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_highres_and_downscaled():
pdf = FPDF()
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(IMAGE_PATH, w=pdf.epw)
pdf.image(IMAGE_PATH, w=50)
count_of_images_in_cache = len(pdf.image_cache.images)
assert count_of_images_in_cache == 1, pdf.image_cache.images.keys()
# Not calling assert_pdf_equal to avoid storing a large binary (1.4M) in this git repo
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_downscaled_with_ratio_5(tmp_path): # issue 1409
image_a = Image.new("RGB", (1190, 1684), (228, 150, 150))
image_b = Image.new("RGB", (1190, 1684), (0, 150, 150))
pdf = FPDF(format="A4", unit="pt")
pdf.oversized_images_ratio = 5
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(image_a, x=0, y=0, w=85, h=120)
pdf.image(image_b, x=100, y=0, w=85, h=120)
pdf.image(image_a, x=0, y=200, w=254, h=360)
assert_pdf_equal(
pdf, HERE / "oversized_images_downscaled_with_ratio_5.pdf", tmp_path
)
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_downscale_biggest_1st(tmp_path):
pdf = FPDF()
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(IMAGE_PATH, w=50)
pdf.image(IMAGE_PATH, w=30)
assert len(pdf.image_cache.images) == 2, pdf.image_cache.images.keys()
in_use_img_names = _in_use_img_names(pdf)
assert len(in_use_img_names) == 1, pdf.image_cache.images.keys()
assert_pdf_equal(pdf, HERE / "oversized_images_downscale_biggest_1st.pdf", tmp_path)
@ensure_rss_memory_below(MAX_MEMORY_MB)
def test_oversized_images_downscale_biggest_2nd(caplog, tmp_path):
caplog.set_level(logging.DEBUG)
pdf = FPDF()
pdf.oversized_images = "DOWNSCALE"
pdf.add_page()
pdf.image(IMAGE_PATH, w=30)
pdf.image(IMAGE_PATH, w=50)
assert "OVERSIZED: Updated low-res image" in caplog.text
assert len(pdf.image_cache.images) == 2, pdf.image_cache.images.keys()
in_use_img_names = _in_use_img_names(pdf)
assert len(in_use_img_names) == 1, pdf.image_cache.images.keys()
assert_pdf_equal(pdf, HERE / "oversized_images_downscale_biggest_2nd.pdf", tmp_path)
def _in_use_img_names(pdf):
return [name for name, img in pdf.image_cache.images.items() if img["usages"]]
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