U g`D@s^dZddlZddlZddlmZddlmZddlmZm Z ddl m Z ddl m Z dd d d d d ddgZeeZGdddeZGdd d eZGdd d ZGdd d ejZGdd d ejZejejejejejejiZeddGddde ZeeeeedddZeeeeedddZ eddGdd d e Z!eddGddde Z"dS) z!Layout utilities (to be expanded)N) dataclass)Fraction)OptionalUnion)ConfigurableMixin)ConfigurationError LayoutErrorBoxSpecificationErrorBoxConstraints AxisAlignmentMargins InnerScalingSimpleBoxLayoutRule Positioningcs&eZdZdZedfdd ZZS)rz+Indicates an error in a layout computation.msgcs||_tj|f|dSN)rsuper__init__)selfrargs __class__r?rr@rErrr from_x_aligns  zAxisAlignment.from_x_aligncCsFztjtjtjd|WStk r@td|dYnXdS)a  Convert from a vertical alignment config string. :param align_str: A string: 'bottom', 'mid' or 'top'. :return: An :class:`.AxisAlignment` value. :raise ConfigurationError: on unexpected string inputs. )bottomrGtopr9zM' is not a valid vertical alignment; valid values are 'bottom', 'mid', 'top'.NrIrMrrr from_y_align s  zAxisAlignment.from_y_aligncCst|Sr)_alignment_oppositesr*rrrflipped#szAxisAlignment.flipped) container_len inner_lenr,c Cstd|||}|tjkr&|||S|tjkr4|S||krdtd|d|d|d|d |S|tjkr||d}||StdS)NlengthzContent box width/height z is too wide for container size z with margins (, z); post_margin will be ignored) r effectiver rLrJloggerwarningrK TypeError)rrTrU pre_margin post_marginZeffective_max_lenZ inner_offsetrrralign's&     zAxisAlignment.alignN)rrrrrBrCrJrKrLrDrrNrQr5rSr(r_rrrrr s T)frozenc@s:eZdZUdZeed<eed<eed<eed<ddZdS) rzP Class describing the position and scaling of an object in a container. x_posy_posx_scaley_scalecCsd|j|j|j|jfS)z Convenience method to convert this :class:`.Positioning` into a PDF ``cm`` operator. :return: A byte string representing the ``cm`` operator corresponding to this :class:`.Positioning`. s%g 0 0 %g %g %g cm)rcrdrarbr*rrras_cm^s zPositioning.as_cmN)rrrrr(r2r4rerrrrrLs  alignment container_boxinner_nat_widthr]r^cCs.|jr||j|||S||||_|SdSr)r.r_r%rfrrr _aln_widthosrjrgrhinner_nat_heightr]r^cCs.|jr||j|||S||||_|SdSr)r0r_r&rkrrr _aln_heightsrmcs~eZdZUdZdZeed<dZeed<dZeed<dZ eed<e ddZ e d d Z d d Zd dZe fddZZS)r z"Class describing a set of margins.rrFrHrPrOcCst||||S)z Return a set of uniform margins. :param num: The uniform margin to apply to all four sides. :return: ``Margins(num, num, num, num)`` )r )r@numrrruniforms zMargins.uniformc Cs:|||}|dkr6td|d|d|d|d |S)z4Internal helper method to compute effective margins.rz Margins (rWz) too wide for container  .)r)Zdim_namerTprepostZeffrrrrYs  zMargins.effectivecCstd||j|jS)a& Compute width without margins. :param width: The container width. :return: The width after subtracting the left and right margins. :raises LayoutError: if the container width is too short to accommodate the margins. r%)r rYrFrHr-rrreffective_widths zMargins.effective_widthcCstd||j|jS)a+ Compute height without margins. :param height: The container height. :return: The height after subtracting the top and bottom margins. :raises LayoutError: if the container height is too short to accommodate the margins. r&)r rYrOrPr/rrreffective_heights zMargins.effective_heightcs$t|trttd|}t|S)N)rFrHrPrO) isinstancelistdictziprrA)r@ config_dictrrrrAs  zMargins.from_config)rrrrrFr(r2rHrPrOrDro staticmethodrYrtrurAr rrrrr s         c@sneZdZUdZeed<eed<eZeed<ej Z eed<e ddZ eddd d Z eeeed d d ZdS)rzk Class describing alignment, scaling and margin rules for a box positioned inside another box. x_aligny_alignmarginsinner_content_scalingcCsz|dtj}t|tr"t|}||d<|dtj}t|trLt|}||d<|dd}|dk rvt||d<dS)Nr|r}r) getr rKrvrrNrQr rA)r@rzr|r}scalingrrrprocess_entriess     z#SimpleBoxLayoutRule.process_entries) new_marginsr,cCst|j|j||jdS)N)r|r}r~r)rr|r}r)rrrrrsubstitute_marginss z&SimpleBoxLayoutRule.substitute_margins)rhrirlr,c Cs|j}|j}d}}|tjkr|jr|jr||j}||j } |dkrR||nd}|dkrf| |nd}|tj krt ||}}n|tj krt ||d}}t |j||||j|j} t|j||||j|j} t| | ||dS)a Position and possibly scale a box within a container, according to this layout rule. :param container_box: :class:`.BoxConstraints` describing the container. :param inner_nat_width: The inner box's natural width. :param inner_nat_height: The inner box's natural height. :return: A :class:`.Positioning` describing the scaling & position of the lower left corner of the inner box. r)rarbrcrd)r~rr r:r.r0rtr%rur&r<minr=rjr|rFrHrmr}rOrPr) rrhrirlr~rrcrdZ eff_widthZ eff_heightrarbrrrfit sN    zSimpleBoxLayoutRule.fitN)rrrrr r2r r~r r=rrDrrr r(rrrrrrrs   )#rrBloggingZ dataclassesrZ fractionsrtypingrrZpyhanko.config.apirZpyhanko.config.errorsr__all__ getLoggerrrZ ValueErrorrr r Enumr r rKrJrLrRrr(rjrmr rrrrrs`      /c#  F