display: flex with align-items: baseline fails to render #765

alvassin · 2019-01-07T19:02:16Z

This HTML ruins WeasyPrint:

<div class="references" style="display: flex; align-items: baseline;">
  <div></div>
</div>

I see following error:

File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/__init__.py", line 198, in write_pdf
    font_config=font_config).write_pdf(
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/__init__.py", line 159, in render
    font_config)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/document.py", line 361, in _render
    [Page(p, enable_hinting) for p in page_boxes],
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/document.py", line 361, in <listcomp>
    [Page(p, enable_hinting) for p in page_boxes],
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/__init__.py", line 126, in layout_document
    context, root_box, html, cascaded_styles, computed_styles, pages))
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/pages.py", line 788, in make_all_pages
    i, context, root_box, html, cascaded_styles, computed_styles)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/pages.py", line 726, in remake_page
    page_number, page_state)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/pages.py", line 554, in make_page
    positioned_boxes, positioned_boxes, adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 55, in block_level_layout
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 71, in block_level_layout_switch
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 125, in block_box_layout
    page_is_empty, absolute_boxes, fixed_boxes, adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 495, in block_container_layout
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 55, in block_level_layout
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 71, in block_level_layout_switch
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 125, in block_box_layout
    page_is_empty, absolute_boxes, fixed_boxes, adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 495, in block_container_layout
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 55, in block_level_layout
    adjoining_margins)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/blocks.py", line 86, in block_level_layout_switch
    device_size, page_is_empty, absolute_boxes, fixed_boxes)
  File "/Users/alvassin/Work/pdf-templates/env/lib/python3.6/site-packages/weasyprint/layout/flex.py", line 669, in flex_layout
    child.baseline = child._baseline - position_cross
TypeError: unsupported operand type(s) for -: 'NoneType' and 'float'

Can you help please?

The text was updated successfully, but these errors were encountered:

Related to #765.

Version 50 ---------- Released on 2019-09-19. New features: * `#209 <https://github.com/Kozea/WeasyPrint/issues/209>`_: Make ``break-*`` properties work inside tables * `#661 <https://github.com/Kozea/WeasyPrint/issues/661>`_: Make blocks with ``overflow: auto`` grow to include floating children Bug fixes: * `#945 <https://github.com/Kozea/WeasyPrint/issues/945>`_: Don't break pages between a list item and its marker * `#727 <https://github.com/Kozea/WeasyPrint/issues/727>`_: Avoid tables lost between pages * `#831 <https://github.com/Kozea/WeasyPrint/issues/831>`_: Ignore auto margins on flex containers * `#923 <https://github.com/Kozea/WeasyPrint/issues/923>`_: Fix a couple of crashes when splitting a line twice * `#896 <https://github.com/Kozea/WeasyPrint/issues/896>`_: Fix skip stack order when using a reverse flex direction Contributors: - grewn0uille - Guillaume Ayoub Version 49 ---------- Released on 2019-09-11. Performance: * Speed and memory use have been largely improved. New features: * `#700 <https://github.com/Kozea/WeasyPrint/issues/700>`_: Handle ``::marker`` pseudo-selector * `135dc06c <https://github.com/Kozea/WeasyPrint/commit/135dc06c>`_: Handle ``recto`` and ``verso`` parameters for page breaks * `#907 <https://github.com/Kozea/WeasyPrint/pull/907>`_: Provide a clean way to build layout contexts Bug fixes: * `#937 <https://github.com/Kozea/WeasyPrint/issues/937>`_: Fix rendering of tables with empty lines and rowspans * `#897 <https://github.com/Kozea/WeasyPrint/issues/897>`_: Don't crash when small columns are wrapped in absolute blocks * `#913 <https://github.com/Kozea/WeasyPrint/issues/913>`_: Fix a test about gradient colors * `#924 <https://github.com/Kozea/WeasyPrint/pull/924>`_: Fix title for document with attachments * `#917 <https://github.com/Kozea/WeasyPrint/issues/917>`_: Fix tests with Pango 1.44 * `#919 <https://github.com/Kozea/WeasyPrint/issues/919>`_: Fix padding and margin management for column flex boxes * `#901 <https://github.com/Kozea/WeasyPrint/issues/901>`_: Fix width of replaced boxes with no intrinsic width * `#906 <https://github.com/Kozea/WeasyPrint/issues/906>`_: Don't respect table cell width when content doesn't fit * `#927 <https://github.com/Kozea/WeasyPrint/pull/927>`_: Don't use deprecated ``logger.warn`` anymore * `a8662794 <https://github.com/Kozea/WeasyPrint/commit/a8662794>`_: Fix margin collapsing between caption and table wrapper * `87d9e84f <https://github.com/Kozea/WeasyPrint/commit/87d9e84f>`_: Avoid infinite loops when rendering columns * `789b80e6 <https://github.com/Kozea/WeasyPrint/commit/789b80e6>`_: Only use in flow children to set columns height * `615e298a <https://github.com/Kozea/WeasyPrint/commit/615e298a>`_: Don't include floating elements each time we try to render a column * `48d8632e <https://github.com/Kozea/WeasyPrint/commit/48d8632e>`_: Avoid not in flow children to compute column height * `e7c452ce <https://github.com/Kozea/WeasyPrint/commit/e7c452ce>`_: Fix collapsing margins for columns * `fb0887cf <https://github.com/Kozea/WeasyPrint/commit/fb0887cf>`_: Fix crash when using currentColor in gradients * `f66df067 <https://github.com/Kozea/WeasyPrint/commit/f66df067>`_: Don't crash when using ex units in word-spacing in letter-spacing * `c790ff20 <https://github.com/Kozea/WeasyPrint/commit/c790ff20>`_: Don't crash when properties needing base URL use var functions * `d63eac31 <https://github.com/Kozea/WeasyPrint/commit/d63eac31>`_: Don't crash with object-fit: non images with no intrinsic size Documentation: * `#900 <https://github.com/Kozea/WeasyPrint/issues/900>`_: Add documentation about semantic versioning * `#692 <https://github.com/Kozea/WeasyPrint/issues/692>`_: Add a snippet about PDF magnification * `#899 <https://github.com/Kozea/WeasyPrint/pull/899>`_: Add .NET wrapper link * `#893 <https://github.com/Kozea/WeasyPrint/pull/893>`_: Fixed wrong nested list comprehension example * `#902 <https://github.com/Kozea/WeasyPrint/pull/902>`_: Add ``state`` to the ``make_bookmark_tree`` documentation * `#921 <https://github.com/Kozea/WeasyPrint/pull/921>`_: Fix typos in the documentation * `#328 <https://github.com/Kozea/WeasyPrint/issues/328>`_: Add CSS sample for forms Contributors: - grewn0uille - Guillaume Ayoub - Raphael Gaschignard - Stani - Szmen - Thomas Dexter - Tontyna Version 48 ---------- Released on 2019-07-08. Dependencies: * CairoSVG 2.4.0+ is now needed New features: * `#891 <https://github.com/Kozea/WeasyPrint/pull/891>`_: Handle ``text-overflow`` * `#878 <https://github.com/Kozea/WeasyPrint/pull/878>`_: Handle ``column-span`` * `#855 <https://github.com/Kozea/WeasyPrint/pull/855>`_: Handle all the ``text-decoration`` features * `#238 <https://github.com/Kozea/WeasyPrint/issues/238>`_: Don't repeat background images when it's not needed * `#875 <https://github.com/Kozea/WeasyPrint/issues/875>`_: Handle ``object-fit`` and ``object-position`` * `#870 <https://github.com/Kozea/WeasyPrint/issues/870>`_: Handle ``bookmark-state`` Bug fixes: * `#686 <https://github.com/Kozea/WeasyPrint/issues/686>`_: Fix column balance when children are not inline * `#885 <https://github.com/Kozea/WeasyPrint/issues/885>`_: Actually use the content box to resolve flex items percentages * `#867 <https://github.com/Kozea/WeasyPrint/issues/867>`_: Fix rendering of KaTeX output, including (1) set row baseline of tables when no cells are baseline-aligned, (2) set baseline for inline tables, (3) don't align lines larger than their parents, (4) force CairoSVG to respect image size defined by CSS. * `#873 <https://github.com/Kozea/WeasyPrint/issues/873>`_: Set a minimum height for empty list elements with outside marker * `#811 <https://github.com/Kozea/WeasyPrint/issues/811>`_: Don't use translations to align flex items * `#851 <https://github.com/Kozea/WeasyPrint/issues/851>`_, `#860 <https://github.com/Kozea/WeasyPrint/issues/860>`_: Don't cut pages when content overflows a very little bit * `#862 <https://github.com/Kozea/WeasyPrint/issues/862>`_: Don't crash when using UTC dates in metadata Documentation: * `#854 <https://github.com/Kozea/WeasyPrint/issues/854>`_: Add a "Tips & Tricks" section Contributors: - Gabriel Corona - Guillaume Ayoub - Manuel Barkhau - Nathan de Maestri - grewn0uille - theopeek Version 47 ---------- Released on 2019-04-12. New features: * `#843 <https://github.com/Kozea/WeasyPrint/pull/843>`_: Handle CSS variables * `#846 <https://github.com/Kozea/WeasyPrint/pull/846>`_: Handle ``:nth()`` page selector * `#847 <https://github.com/Kozea/WeasyPrint/pull/847>`_: Allow users to use a custom SSL context for HTTP requests Bug fixes: * `#797 <https://github.com/Kozea/WeasyPrint/issues/797>`_: Fix underlined justified text * `#836 <https://github.com/Kozea/WeasyPrint/issues/836>`_: Fix crash when flex items are replaced boxes * `#835 <https://github.com/Kozea/WeasyPrint/issues/835>`_: Fix ``margin-break: auto`` Version 46 ---------- Released on 2019-03-20. New features: * `#771 <https://github.com/Kozea/WeasyPrint/issues/771>`_: Handle ``box-decoration-break`` * `#115 <https://github.com/Kozea/WeasyPrint/issues/115>`_: Handle ``margin-break`` * `#821 <https://github.com/Kozea/WeasyPrint/issues/821>`_: Continuous integration includes tests on Windows Bug fixes: * `#765 <https://github.com/Kozea/WeasyPrint/issues/765>`_, `#754 <https://github.com/Kozea/WeasyPrint/issues/754>`_, `#800 <https://github.com/Kozea/WeasyPrint/issues/800>`_: Fix many crashes related to the flex layout * `#783 <https://github.com/Kozea/WeasyPrint/issues/783>`_: Fix a couple of crashes with strange texts * `#827 <https://github.com/Kozea/WeasyPrint/pull/827>`_: Named strings and counters are case-sensitive * `#823 <https://github.com/Kozea/WeasyPrint/pull/823>`_: Shrink min/max-height/width according to box-sizing * `#728 <https://github.com/Kozea/WeasyPrint/issues/728>`_, `#171 <https://github.com/Kozea/WeasyPrint/issues/171>`_: Don't crash when fixed boxes are nested * `#610 <https://github.com/Kozea/WeasyPrint/issues/610>`_, `#828 <https://github.com/Kozea/WeasyPrint/issues/828>`_: Don't crash when preformatted text lines end with a space * `#808 <https://github.com/Kozea/WeasyPrint/issues/808>`_, `#387 <https://github.com/Kozea/WeasyPrint/issues/387>`_: Fix position of some images * `#813 <https://github.com/Kozea/WeasyPrint/issues/813>`_: Don't crash when long preformatted text lines end with ``\n`` Documentation: * `#815 <https://github.com/Kozea/WeasyPrint/pull/815>`_: Add documentation about custom ``url_fetcher``

liZe added crash Problems preventing documents from being rendered bug Existing features not working as expected labels Jan 8, 2019

liZe removed the bug Existing features not working as expected label Mar 7, 2019

liZe closed this as completed in a5e9127 Mar 19, 2019

liZe added this to the 46 milestone Mar 19, 2019

liZe added a commit that referenced this issue Mar 19, 2019

Add test about flexbox baseline

d134ea7

Related to #765.

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

display: flex with align-items: baseline fails to render #765

display: flex with align-items: baseline fails to render #765

alvassin commented Jan 7, 2019

display: flex with align-items: baseline fails to render #765

display: flex with align-items: baseline fails to render #765

Comments

alvassin commented Jan 7, 2019