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3 0j> @sdZddlZddlZddlZddlZddlmZddlm Z m Z ddl m Z ddlm Z dbe jdce jdde jdee jdfe jdge jdhe jdie jdje jdke jdle jdme jdne jdoe jdpe jdqe jiZddeddDZejdddddZd d!Z d"d#Z!drd$d%Z"d&d'Z#d(d)Z$d*d+Z%d,d-Z&dsd.d/Z'dtd0d1Z(d2d3Z)d4d5Z*d6d7Z+d8d9Z,ej-d:j.fd;d<Z/dud=d>Z0d?d@Z1dAdBZ2dCdDZ3ej4j5dEZ6dFdGZ7dHdIZ8dJdKZ9dvdMdNZ:dOdPZ;dQdRZdWdXZ?dYdZZ@d[d\ZAd]d^ZBd_d`ZCe@e@eBeCeAdaZDdS)xa0 weasyprint.formatting_structure.build ------------------------------------- Turn an element tree with associated CSS style (computed values) into a "before layout" formatting structure / box tree. This includes creating anonymous boxes and processing whitespace as necessary. N)html)computed_values properties)LOGGER)boxesblockflowinline flow-roottableflex table-rowtable-row-grouptable-header-grouptable-footer-group table-columntable-column-group table-cell table-captioncCsi|]}t|d|qS)i)chr).0irK/tmp/pip-build-_d5lkt3n/weasyprint/weasyprint/formatting_structure/build.py 1sr!u　u−) -cCs$t|}t|}t|}t|}|S)zDCreate anonymous boxes in box descendants according to layout rules.)anonymous_table_boxes flex_boxesinline_in_blockblock_in_inline)boxrrrcreate_anonymous_boxes5s r&c sht|||||}|r |\}n&dfdd } t| |||||\}|jd|_t|}t|}|S)z=Build a formatting structure (box tree) from an element tree.Ncs0||}|dk r,|kr$d|d<nd|d<|S)Nr r displaynone)r r )r(r)element pseudo_typestyle) element_tree style_forrrroot_style_forIs   z2build_formatting_structure..root_style_forT)N)element_to_boxZcheck_pending_targetsZis_for_root_elementr&set_viewport_overflow) r,r-get_image_from_uribase_urltarget_collector counter_style footnotesbox_listr%r.r)r,r-rbuild_formatting_structure>s  r7cCs"t|ddd||||}|S)Nr'r)BOX_TYPE_FROM_DISPLAY) element_tagr+contentr)r%rrrmake_box^s r;c Csht|jtsgS||}|d} | dkr,gS|ddkrV|ddkrNd|d<nd|d<t|j|g|} |d krd gdd gidhgf}|\} } } t||g}| jt||d | _||d | _g}d |dkrt t |||||||}|j ||j t |d||||||dr(|j |d| | |j}|rH|jtjj| |x|D]}t||||||||}|r|d jddkr|d }d|jd<|j|||d}t|jd|g|}t||| | ||||_||_|g}|j ||j}|rNtjj| |}|r2t|dtjr2|dj|j7_n |j|qNW|j t |d|||||x2| jD]&}| |j| |sf| j|qfW|| _t| t|| || ||t| |rt| jdkr|ddkr| jjtjj| d|ddkrX| ddd7<||d}t|jd|g|}t|| | | ||||_| jjd |tj|| ||S)a Convert an element and its children into a box with children. Return a list of boxes. Most of the time the list will have one item but may have zero or more than one. Eg.::

Some emphasised text.

gives (not actual syntax):: BlockBox[ TextBox['Some '], InlineBox[ TextBox['emphasised'], ], TextBox[' text.'], ] ``TextBox``es are anonymous inline boxes: See http://www.w3.org/TR/CSS21/visuren.html#anonymous r'r(floatfootnoteZfootnote_displayr r r Nrz first-letterz first-linez list-itembeforeanchorz footnote-callz::footnote-callrafterlist_style_positionoutsideu​zfootnote-markerz::footnote-marker)r()r r )r r rCrC) isinstancetagstrr;update_countersappendsetZfirst_letter_styleZfirst_line_stylelist marker_to_boxextendbefore_after_to_boxZ store_targettextrTextBoxanonymous_fromr/r+content_to_boxeschildrenr=tailpopprocess_whitespaceset_content_listsprocess_text_transformleninsertrZhandle_element)r)r-r1r2r3r4r5stater+r'r% quote_depthcounter_valuescounter_scopesrR marker_boxesrNZ child_elementZ child_boxesr=Z call_styleZ footnote_calltext_boxnameZ marker_stylemarkerrrrr/ds                                r/c Cs|||}|r|dkrgS|d}|d kr.gS|d} | d krBgSt|jd||g|} |\} } } t||g}d|krtt|||||||}|j||jt|| | | ||||| _|d dkrd | _n |\}} } t || |d | ||| gS) z8Return the boxes for ::before or ::after pseudo-element.Nr'r(r:normalinhibitz::z list-itembookmark_label)r()rbrcr() r;rErGrJrKrLrQrRrdcompute_bookmark_label)r)r*rZr-r1r3r4r+r'r:r%r[r\_counter_scopesrRr^ _quote_depthrrrrMs:            rMc cs||d}g}|\} } } t|jd|||} |ddkr>dS|d\} }|ddkrr|jt|| | | |||n| d kr||d }|dk rtjj| |} |j| | o|d dkr| jd dgd}|d }|j ||}tj j| |} d| j d<|j| |s dS|ddkrttj j| |}d|j d<|ddkrLt jdd}n t jdd}tj}d||fff|j d<ntjj| |}|VdS) zyYield the box for ::marker pseudo-element if there is one. https://drafts.csswg.org/css-lists-3/#marker-pseudo raz::markerr'r(NZlist_style_imager:rbrcurl)riZlist_style_typez list-itemrrzpre-wrap white_spacerArBZabsoluteposition directionZltrd% translateZ transform)r()rbrcrCi)r;rErLrQrInlineReplacedBoxrPrHgetZ render_markerrOr+BlockBoxrZ DimensionrZ ZERO_PIXELS InlineBox)r)rZZ parent_styler-r1r3r4r+rRr[r\rgr%Z image_typeimage counter_value counter_typeZ marker_textZ marker_boxZ translate_xZ translate_yrrrrK5sH             rKcCs|t||kr|j|dS)zCollect missing counters.N)rJrH) counter_namer\missing_countersrrr_collect_missing_counterwsrycCs*||kr&|j|g}||kr&|j|dS)zCollect missing target counters. 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Take and return a ``Box`` object. See http://www.w3.org/TR/css-flexbox-1/#flex-items cSsg|] }t|qSr)r")rrrrrrszflex_boxes..)rDrrrrR flex_children)r%rRrrrr"s  r"cCst|tjrg}xn|D]f}|js(d|_t|tjrD|jjd rDqt|tjrrtj j ||g}d|_|j |q|j |qW|S|SdS)NTr) rDrris_absolutely_positionedZ is_flex_itemrOrNrInlineLevelBoxrrrPrH)r%rRrr anonymousrrrrs    rFcCs"t|tjr|j}|s|Stjdd|}|jddk}|jddk}|rVtjdd|}|rf|jdd}|r|jd d}tjd d|}|}|r|jdr|d d }d |_ |j d}nd}||_|St|tj o|j rxB|j D]8}t|tjtjfrt||}qt||jrd}qW|S)zFirst part of "The 'white-space' processing model". 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Consecutive inline-level boxes in a block container box are wrapped into a line box, itself wrapped into an anonymous block box. This line box will be broken into multiple lines later. This is the first case in http://www.w3.org/TR/CSS21/visuren.html#anonymous-block-level Eg.:: BlockBox[ TextBox['Some '], InlineBox[TextBox['text']], BlockBox[ TextBox['More text'], ] ] is turned into:: BlockBox[ AnonymousBlockBox[ LineBox[ TextBox['Some '], InlineBox[TextBox['text']], ] ] BlockBox[ LineBox[ TextBox['More text'], ] ] ] FrTrrjrbrpre-line)rbrr#)rDrrrrJrRrrOrNrHr#trailing_collapsible_spaceZBlockContainerBoxrrrrrr+rPrr) r%Z box_childrenrRr$rZnew_line_children new_childrenZ child_boxZline_boxrrrrr#"s^&              r#c Cst|tj s|jr|Sg}d}x|jD]}t|tjrt|jdksVtd|jd}xHt||d\}}}|dkrxPtj j ||g}|j ||j t |q\W|rtj j ||g}q|}nt |}||k rd}|j |q*W|r||_|S)aBuild the structure of blocks inside lines. Inline boxes containing block-level boxes will be broken in two boxes on each side on consecutive block-level boxes, each side wrapped in an anonymous block-level box. This is the second case in http://www.w3.org/TR/CSS21/visuren.html#anonymous-block-level Eg. if this is given:: BlockBox[ LineBox[ InlineBox[ TextBox['Hello.'], ], InlineBox[ TextBox['Some '], InlineBox[ TextBox['text'] BlockBox[LineBox[TextBox['More text']]], BlockBox[LineBox[TextBox['More text again']]], ], BlockBox[LineBox[TextBox['And again.']]], ] ] ] this is returned:: BlockBox[ AnonymousBlockBox[ LineBox[ InlineBox[ TextBox['Hello.'], ], InlineBox[ TextBox['Some '], InlineBox[TextBox['text']], ] ] ], BlockBox[LineBox[TextBox['More text']]], BlockBox[LineBox[TextBox['More text again']]], AnonymousBlockBox[ LineBox[ InlineBox[ ] ] ], BlockBox[LineBox[TextBox['And again.']]], AnonymousBlockBox[ LineBox[ InlineBox[ ] ] ], ] Frz9Line boxes should have no siblings at this stage, got %r.N) skip_stackT) rDrrrrRrrXr_inner_block_in_inlinerrrPrHr$) r%r%changedrstacknew_liner Zanon new_childrrrr$s8=    r$c Csg}d}d}d}|dk}|r"d}n|j\\}}xt|j|dD]\}} ||} t| tjr| jr|dkstt| }| d7} nPt| tjrt | |} d}| \} }}n|dkstt | } | | k rd}|j | |dk rD| |i}|j |}PqDW|s|r|j |}|||fS)aFind a block-level box in an inline formatting context. If one is found, return ``(new_box, block_level_box, resume_at)``. ``new_box`` contains all of ``box`` content before the block-level box. ``resume_at`` can be passed as ``skip_stack`` in a new call to this function to resume the search just after the block-level box. If no block-level box is found after the position marked by ``skip_stack``, return ``(new_box, None, None)`` NFrrT) itemsrrRrDrZ BlockLevelBoxrrrsr'r$rHr) r%r&r%Zblock_level_boxZ resume_atr(Zis_startskiprrindex recursionr+rrrr's>            r'cCs^|}|jjdkrD|jddkrDx"|jD]}|jjdkr(|}Pq(W|jd|_d|jd<|S)z Set a ``viewport_overflow`` attribute on the box for the root element. Like backgrounds, ``overflow`` on the root element must be propagated to the viewport. 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