3 <WN@sdZddlmZmZddlmZmZddlmZm Z ddl m Z ddl m Z mZddlmZmZdd lmZmZmZdd lmZmZd d lmZd d lmZd dlmZmZddZ ddZ!ddZ"ddZ#e ddZ$eddZ%ddZ&ddZ'dd Z(d!d"Z)d#d$Z*d%d&Z+e d'd(Z,d)d*Z-d+d,Z.d-d.Z/d/d0Z0d1d2Z1d3d4Z2d5d6Z3d7d8Z4d9d:Z5d;d<Z6d=d>Z7d?d@Z8dAS)Bz weasyprint.layout.inline ------------------------ Line breaking and layout for inline-level boxes. :copyright: Copyright 2011-2014 Simon Sapin and contributors, see AUTHORS. :license: BSD, see LICENSE for details. )divisionunicode_literals)absolute_layoutAbsolutePlaceholder)avoid_collisions float_layout)image_marker_layout)handle_min_max_widthhandle_min_max_height)resolve_percentagesresolve_one_percentage) shrink_to_fitinline_min_content_widthtrailing_whitespace_size)find_in_flow_baselinetable_wrapper_width)split_first_line)boxes) strut_layoutex_ratioc csZxTt||||||||\}} |r,|j|j}|dkr8dS|| fV| dkrNdS| }qWdS)aReturn an iterator of ``(line, resume_at)``. ``line`` is a laid-out LineBox with as much content as possible that fits in the available width. :param linebox: a non-laid-out :class:`LineBox` :param position_y: vertical top position of the line box on the page :param skip_stack: ``None`` to start at the beginning of ``linebox``, or a ``resume_at`` value to continue just after an already laid-out line. :param containing_block: Containing block of the line box: a :class:`BlockContainerBox` :param device_size: ``(width, height)`` of the current page. 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zDGot %r between two lines. Expected nothing or a preserved line break)NNF)rr)rPrrQr6r.rerTrr/Z text_bytesdecodeencoderSZcopy_with_textr, pango_layoutrrr8r9r7strip)rrrD line_widthrrerTZlayoutrXr#r,rr7r_ZbetweenrrCrrHr$r$r%r^sD         r^c sgt|dd\}}fddD}|rTdd|D}|rTt|}t|||}x^|D]V\}}}|jrx||j} n.|jjdkr||} n|jjdkst||} t|| qZW||fS)aHandle ``vertical-align`` within an :class:`LineBox` (or of a non-align sub-tree). Place all boxes vertically assuming that the baseline of ``box`` is at `y = 0`. Return ``(max_y, min_y)``, the maximum and minimum vertical position of margin boxes. r) baseline_ycs<g|]4}|jrdn t|ddgD]\}}|||fq$qS)Nr)r)NN)raligned_subtree_verticality)rsubtree sub_max_y sub_min_y)top_bottom_subtreesr$r%rs z(line_box_verticality..cSs"g|]\}}}|js||qSr$)r)rrrrr$r$r%rsrJrI)rrwrrr.vertical_alignr6translate_subtree) rmax_ymin_yZsubtrees_with_min_maxZ sub_positionsZ highest_subrrrdyr$)rr%r5s(     r5cCsRt|tjrB|j|7_|jjdkrNx&|jD]}t||q.Wn |j|ddS)NrJrI)r)rJrI) rPrrVrr.rr@rr;)rrrr$r$r%rs    rcCsVt|||\}}||j}||j}|dks6||kr:|}|dksJ||krN|}||fS)N)inline_box_verticalityr7r|)rrrrrrJrIr$r$r%rs  rc Csd}d}t|tjtjfs"||fSx|jD]}|jsN|jr,|j|q,|jj }|dkrd|}n|dkr|jj t |j}|||j d} | |j }n|dkr||j |j|j|j} | |j }nX|dkr||j |j|j|j|j} | |j |j }n|d krd }n||}||j } t|tjrR|j| |jd n| |_|d krn|j|q,| |j } |dks| |kr| }|dks| |kr| }t|tjr,t|||\} } | dk r| |kr| }| dk r,| |kr,| }q,W||fS) zHandle ``vertical-align`` within an :class:`InlineBox`. Place all boxes vertically assuming that the baseline of ``box`` is at `y = baseline_y`. Return ``(max_y, min_y)``, the maximum and minimum vertical position of margin boxes. Nr7Zmiddleg@ztext-topz text-bottomrJrIr)r)rJrI)rJrI)rPrrUrVr@rrr>r.rrerr|r7r8rrrr}r;rr) rrrrrrrZchild_baseline_yZone_exrJrIZchildren_max_yZchildren_min_yr$r$r%rsZ     "      rcCs|jj}|jjd k}|dkr:|dk|jjdkAr6d}nd}|d krZ|rZ|jjdkrVdnd}|dkrfd S||j}|d kr|rt|||d S|d kr|d }n |dkst|S)zgReturn how much the line should be moved horizontally according to the `text-align` property. rLrMpre-line -weasy-start -weasy-endZrtlrproZjustifyrcenterg@)rLrMr)rr)r.r:rR directionr, justify_liner6)rr"rDr*ZalignZspace_collapseoffsetr$r$r%r:hs&      r:cCs*t|}|dkrdSt||||ddS)Nr) count_spacesadd_word_spacing)rr"Z extra_width nb_spacesr$r$r%rsrcCsFt|tjr|jjdSt|tjtjfr>tdd|jDSdSdS)NrOcss|]}t|VqdS)N)r)rrr$r$r% szcount_spaces..r) rPrrQrTcountrUrVsumr@)rr$r$r%rs   rc Cst|tjr|j|7_|jj|7_t|}|dkrt||ddd\}}}|dk s\t|dksht|||7}|j |_ |j |_ nbt|tj tj fr|j|7_|}x|j D]} t|| ||}qW|j ||7_ n |j|d|S)Nrg _B)rPrrQr1r.Z word_spacingrr^r6r,rrUrVr@rr;) rrZextra_word_spacingZ x_advancerr`r#rCZprevious_x_advancerr$r$r%rs*       rcCsxz|jD]p}t|tjrlt|s$dSxRd D]<}t|jd|ddsb|jd |sb|jd |jr*dSq*Wq|jrdSqWd S) z8http://www.w3.org/TR/CSS21/visuren.html#phantom-line-boxFrJrorIrpz margin_%svalueNzborder_%s_widthz padding_%sT)rJrorIrp) r@rPrrVr3rqr.rr)rBrrtr$r$r%r3s    r3N)9__doc__ __future__rrrrrrrrZreplacedr Zmin_maxr r Z percentagesr r Z preferredrrrZtablesrrrTrZformatting_structurerZcss.computed_valuesrrr&rr-r4rlrnrursrvrr~rrrr2r^r5rrrr:rrrr3r$r$r$r% sJ   i'+ +  : 3 E-  M