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% Calculate the vertical offset of current box due the 'clear' CSS property
% 
% @param $y initial Y coordinate to begin offset from
% @param $context flow context containing the list of floats to interact with
% @return updated value of Y coordinate
%
/box-generic-apply-clear {         % => Context Y This
% Check if we need to offset box vertically due the 'clear' property
  dup /clear get-css-value         % => Context Y This Clear
  
  dup /both eq
  1 index /left eq or {            % => Context Y This Clear
    3 index context-floats {       % => Context Y This Clear FloatBox
      dup /float get-css-value     % => Context Y This Clear FloatBox FloatValue
      /left eq {                   % => Context Y This Clear FloatBox
% Float vertical margins are never collapsed
        get-bottom-margin          % => Context Y This Clear FloatBottomMargin
        2 index get-margin-top     % => Context Y This Clear FloatBottomMargin MarginTop
        sub                        % => Context Y This Clear Y'
        3 index min                % => Context Y This Clear Y
        4 3 roll                   % => Context This Clear Y' Y
        pop                        % => Context This Clear Y
        3 1 roll                   % => Context Y This Clear
      } {                          % => Context Y This Clear FloatBox
        pop
      } ifelse
    } forall
  } if                             % => Context Y This Clear

  dup /both eq
  1 index /right eq or {           % => Context Y This Clear
    3 index context-floats {       % => Context Y This Clear FloatBox
      dup /float get-css-value     % => Context Y This Clear FloatBox FloatValue
      /right eq {                  % => Context Y This Clear FloatBox
% Float vertical margins are never collapsed
        get-bottom-margin          % => Context Y This Clear FloatBottomMargin
        2 index get-margin-top     % => Context Y This Clear FloatBottomMargin MarginTop
        sub                        % => Context Y This Clear Y'
        3 index min                % => Context Y This Clear Y
        4 3 roll                   % => Context This Clear Y' Y
        pop                        % => Context This Clear Y
        3 1 roll                   % => Context Y This Clear
      } {                          % => Context Y This Clear FloatBox
        pop
      } ifelse
   } forall
  } if                             % => Context Y This Clear

  pop pop
  exch pop                         % => Y
} def

% Apply 'line-height' CSS property; modifies the default_baseline value 
% (NOT baseline, as it is calculated - and is overwritten - in the close_line
% method of container box
%
% Note that underline position (or 'descender' in terms of PDFLIB) - 
% so, simple that space of text box under the baseline - is scaled too
% when 'line-height' is applied
%
/box-generic-apply-line-height {   % => Box
  dup get-height                   % => Box Height

  1 index /line-height get-css-value
  dup /Percentage get {            % => Box Height LineHeight
    /Value get
    1 index mul 100 div            % => Box Height NewHeight
  } {
    /Value get                     % => Box Height NewHeight
  } ifelse

  1 index
  3 index get-default-baseline sub % => Box Height NewHeight Under

  2 index 0 gt {
    1 index 3 index div            % => Box Height NewHeight Under Scale
  } {
    0
  } ifelse                         % => Box Height NewHeight Under Scale

  2 index 5 index put-height       % => Box Height NewHeight Under Scale
  mul sub                          % => Box Height NewHeight-Under*Scale
  2 index put-default-baseline     % => Box Height

  pop pop
} def

/box-generic-check-page-break-after { % => Context Parent This
  1 index /null ne {
    dup /page-break-after
    get-css-value                  % => Context Parent This CSS-pba

    dup /avoid ne
    1 index /auto ne and {         % => Context Parent This CSS-pba
      3 index context-get-viewport % => Context Parent This CSS-pba Viewport

      dup flow-viewport-get-top    % => Context Parent This CSS-pba Viewport VTop
      4 index get-current-y sub    % => Context Parent This CSS-pba Viewport YOfs
      1 index
      flow-viewport-get-height div % => Context Parent This CSS-pba Viewport PagesFraction
      dup ceiling sub              % => Context Parent This CSS-pba Viewport PageFraction

      1 index flow-viewport-get-height
      mul                          % => Context Parent This CSS-pba Viewport YDelta
      4 index get-current-y add
      4 index put-current-y        % => Context Parent This CSS-pba Viewport

      pop
    } if                           % => Context Parent This CSS-pba
    
    pop
  } if                             % => Context Parent This

  pop pop pop
} def

/box-generic-collapse-margin { % => Context Parent This    
% do margin collapsing

% Margin collapsing is done as follows:
% 1. If previous sibling was an inline element (so, parent line box was not empty),
% then no collapsing will take part
% 2. If NO previous element exists at all, then collapse current box top margin
% with parent's collapsed top margin.
% 2.1. If parent element was float, no collapsing should be
% 3. If there's previous block element, collapse current box top margin 
% with previous elemenent's collapsed bottom margin

% Check if current parent line box contains inline elements only. In this case the only 
% margin will be current box margin 
  1 index box-container-line-box-empty not { 
% Case (1). Previous element was inline element; no collapsing
    dup get-margin-top           % => Context Parent This MT
    3 index                      % => Context Parent This MT Context
    context-push-collapsed-margin

    2 index 2 index box-container-close-line

    1 index get-current-y        % => Context Parent This Y
    1 index get-margin-top sub   % => Context Parent This Y
  } {
% Case (2). No previous block element at all; Collapse with parent margins
% Case (3). There's a previous block element
% We can process both cases at once, as context object collapsed margin stack
% allows us to track collapsed margins value

% Calculate the value to offset current box vertically due margin
% note that we'll get non-negative value - the value to increate collapsed margin size, 
% but we must offset box to the bottom

    dup get-margin-top
    dup                          % => Context Parent This MT MT
    4 index
    context-get-collapsed-margin % => Content Parent This MT MT CM
    min
    sub                          % => Context Parent This Y

    1 index get-margin-top
    4 index context-get-collapsed-margin
    max                          % => Context Parent This Y CM'
    4 index
    context-push-collapsed-margin
                                   % => Context Parent This Y

% Offset parent, if current box is the first child, as we should not get
% vertical gaps before the first child during margin collapsing

    2 index get-uid             
    4 index context-container-uid ne
                                   % => Context Parent This vmargin if_expr

    {                            % => Context Parent This $vmargin
      dup neg 0 3 index          % => Context Parent This $vmargin -$vmargin 0 This
      5 index
      box-container-offset-if-first not {
                                   % => Context Parent This vmargin
        2 index get-current-y
        exch sub
        2 index put-current-y    
      } { pop } ifelse           % => Context Parent This

      1 index get-current-y      % => Context Parent This Y
    } {                          % => Context Parent This $vmargin
      2 index get-current-y
      exch sub
    } ifelse                     % => Context Parent This Y
  } ifelse

  exch pop
  exch pop
  exch pop
} def

/box-generic-contains-point-margin { % => Y X Box
  dup get-left-margin rounding-epsilon sub 2 index le
  1 index get-right-margin rounding-epsilon add 3 index ge and
  1 index get-top-margin rounding-epsilon add 4 index ge and
  1 index get-bottom-margin 4 index lt and

  exch pop
  exch pop
  exch pop
} def

/box-generic-create {              % =>
  <<
    /AdditionalTextIndent 0

    /Cache << >>
    
    /CSS <<
      /background background-create
      
      /border border-create

      /cellpadding 1 px
      /cellspacing 1 px
      /clear /none
      /color 0 0 0 0 color-create

      /display /inline
      
      /float       /none
      /font-size   10 pt
      /font-family default-font

      /height <<
        /percentage false
        /auto true
        /value 0
      >>

      /left 0
      
      /line-height <<
        /Percentage true
        /Value 110
      >>

      /list-style <<
        /position /outside
        /type /disc
      >>

      /margin <<
        /left <<
          /value 0
          /percentage /null
          /auto false
        >>
        /right <<
          /value 0
          /percentage /null
          /auto false
        >>
        /top <<
          /value 0
          /percentage /null
          /auto false
        >>
        /bottom <<
          /value 0
          /percentage /null
          /auto false
        >>
      >>

      /overflow /visible

      /padding <<
        /left <<
          /value 0
          /percentage /null
          /auto false
        >>
        /right <<
          /value 0
          /percentage /null
          /auto false
        >>
        /top <<
          /value 0
          /percentage /null
          /auto false
        >>
        /bottom <<
          /value 0
          /percentage /null
          /auto false
        >>
      >>
      /page-break-after /auto
      /position /static
      /pseudo-align {text-align-left}
      /pseudo-nowrap /normal
      /pseudo-link-destination ()
      /pseudo-link-target << /type /none >>
      
      /text-align   {text-align-left}
      /text-decoration <<
        /overline false
        /underline false
        /line-through false
      >>
      /text-indent <<
        /Percentage false
        /Value 0
      >>
      /top << /value 0 /percentage false >>

      /vertical-align /baseline
      /visibility /visible

      /white-space /normal
    >>

    /CurrentX 0
    /CurrentY 0
    
    /DeferredFloats []

    /HeightConstraint /null /null /null hc-create

    /Methods <<
    >>

    /Parent /null
    
    /Position <<
      /left   0
      /top    0
      /width  0
      /height 0
      /baseline 0
      /default-baseline 0
    >>

    /UID 0

    /WidthConstraint wc-create-none
  >>

  dup box-generic-setup-methods
  dup /box-generic add-type
} def                              % => Box

/box-generic-calc-auto-width-margins {
                                   % => Parent This
  dup /float get-css-value
  /none ne {
    2 copy box-generic-calc-auto-width-margins-float
  } {
    2 copy box-generic-calc-auto-width-margins-normal
  } ifelse
  pop pop
} def

/box-generic-calc-auto-width-margins-float { % Parent This
  dup is-margin-auto-left {
    0 1 index put-margin-left
  } if

  dup is-margin-auto-right {
    0 1 index put-margin-right
  } if

  pop pop
} def

% 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' = width of containing block
%
/box-generic-calc-auto-width-margins-normal {
                                   % => Parent This
% If both 'margin-left' and 'margin-right' are 'auto', their used values are equal. 
% This horizontally centers the element with respect to the edges of the containing block.
  dup is-margin-auto-left
  1 index is-margin-auto-right and {
    1 index /get-width call-method              % => Parent This PW
    1 index get-full-width         % => Parent This PW W
    sub 2 div                      % => Parent This M

    dup 2 index put-margin-left
    dup 2 index put-margin-right   % => Parent This M
    
    pop
  } {                              % => Parent This
% If there is exactly one value specified as 'auto', its used value follows from the equality.
    dup is-margin-auto-left {
      1 index /get-width call-method
      1 index get-full-width
      sub

      1 index put-margin-left
    } if

    dup is-margin-auto-right {
      1 index /get-width call-method
      1 index get-full-width
      sub

      1 index put-margin-right
    } if
  } ifelse                         % => Parent This

  pop pop
} def

/box-generic-calc-percentage-margins {
                                   % => Parent This
  dup get-margin-percentage-left   % => Parent This LMP
  dup /null ne {
    2 index /get-width call-method              % => Parent This LMP PW
    mul 100 div                    % => Parent This LM
    1 index put-margin-left        % => Parent This
  } {
    pop
  } ifelse

  dup get-margin-percentage-right  % => Parent This LMP
  dup /null ne {
    2 index /get-width call-method              % => Parent This LMP PW
    mul 100 div                    % => Parent This LM
    1 index put-margin-right       % => Parent This
  } {
    pop
  } ifelse                         % => Parent This

  pop pop
} def

% If the containing block's width depends on this element's width, 
% then the resulting layout is undefined in CSS 2.1.
%
/box-generic-calc-percentage-width {
                                   % => Context Parent This
  dup get-width-constraint
  dup wc-is-fraction               % => Context Parent This WC IsFraction
  {                                % => Context Parent This WC 
% Calculate actual width
    2 index /get-width call-method
    exch                           % => Context Parent This PW WC
    2 index /get-width call-method              
    exch                           % => Context Parent This PW CW WC
    wc-apply                       % => Context Parent This W

% Check if calculated width is less than minimal width
% Note that get_min_width will return the width including the extra horizontal space!
    3 index 2 index
    /get-min-width call-method     % => Context Parent This W MinW

    2 index get-hor-extra sub      % => Context Parent This W MinW'

    max                            % => Context Parent This W

% Assign calculated width
    dup 2 index put-width          % => Context Parent This W 

% Remove any width constraint
    wc-create-constant             % => Context Parent This WC
    1 index put-width-constraint   % => Context Parent This   
  } {
    pop
  } ifelse

  pop pop pop
} def

/box-generic-calc-text-indent {    % => Box
  dup /text-indent get-css-value   % => Box TextIndent
  dup /Percentage get {            % => Box TextIndent
    1 index /get-width call-method              % => Box TextIndent W
    1 index /Value get             % => Box TextIndent W Percent
    mul 100 div                    % => Box TextIndent TIValue
  } {                              % => Box TextIndent
    dup /Value get                 % => Box TextIndent TIValue
  } ifelse
  
  exch pop
  exch pop
} def

% Extends the box height to cover the given Y coordinate
% If box height is already big enough, no changes will be made
%
% @param $y_coord Y coordinate should be covered by the box
%
/box-generic-extend-height {       % => Y This
  dup get-height                   % => Y This H
  1 index get-top                  % => Y This H Top
  3 index sub                      % => Y This H Top-Y
  max
  1 index put-height
  pop pop
} def

/box-generic-extend-width {        % => X This
  dup /get-width call-method       % => X This Width
  2 index
  2 index get-left sub             % => X This Width NewWidth
  max
  1 index put-width                % => X This
  pop pop
} def

% Get the position and size of containing block for current 
% ABSOLUTE POSITIONED element. It is assumed that this function
% is called for ABSOLUTE positioned boxes ONLY
%
% @return associative array with 'top', 'bottom', 'right' and 'left' 
% indices in data space describing the position of containing block
%
/box-generic-get-containing-block {% => Box
  dup get-parent                   % => Box Parent

% No containing block at all... 
% How could we get here?
  dup /null eq {
    (Error: No containing block found for absolute-positioned element) print
    quit
  } if

% CSS 2.1:
% If the element has 'position: absolute', the containing block is established by the 
% nearest ancestor with a 'position' of 'absolute', 'relative' or 'fixed', in the following way:
% - In the case that the ancestor is inline-level, the containing block depends on 
%   the 'direction' property of the ancestor:
%   1. If the 'direction' is 'ltr', the top and left of the containing block are the top and left 
%      content edges of the first box generated by the ancestor, and the bottom and right are the 
%      bottom and right content edges of the last box of the ancestor.
%   2. If the 'direction' is 'rtl', the top and right are the top and right edges of the first
%      box generated by the ancestor, and the bottom and left are the bottom and left content 
%      edges of the last box of the ancestor.
% - Otherwise, the containing block is formed by the padding edge of the ancestor.
% TODO: inline-level ancestors
  {                                % => Box Parent
    dup get-parent                 % => Box Parent Parent2
    /null eq { exit } if           % => Box Parent
    dup /position get-css-value
    /static ne { exit } if         % => Box Parent
    get-parent                     % => Box Parent2
  } loop                           % => Box ContainingBox

% Note that initial containg block (containig BODY element) will be formed by BODY margin edge,
% unlike other blocks which are formed by content edges
  << >>                            % => Box ContainingBox CB
  1 index get-parent /null ne {
% Normal containing block
    dup /left   3 index get-left   put
    dup /right  3 index get-right  put
    dup /top    3 index get-top    put
    dup /bottom 3 index get-bottom put
  } {
% Initial containing block
    dup /left   3 index get-left-margin   put
    dup /right  3 index get-right-margin  put
    dup /top    3 index get-top-margin    put
    dup /bottom 3 index get-bottom-margin put
  } ifelse                         % => Box ContainingBox CB

  exch pop
  exch pop 
} def

/box-generic-get-expandable-width {% => Box
  dup get-parent /null ne
  1 index get-width-constraint
  /type get /none eq and {
    get-parent box-generic-get-expandable-width
  } {
    /get-width call-method
  } ifelse
} def

/box-generic-get-extra-line-left { % => Box
  pop 0
} def

/box-generic-get-extra-line-right {% => Box
  pop 0
} def

/box-generic-get-real-full-height {
  get-full-height
} def

/box-generic-get-width {                       % => Box
  dup get-parent /null ne {
    dup get-parent                 % => Box Parent
    /get-width call-method                      % => Box ParentWidth
  } {
    dup /Position get
    /width get
  } ifelse

  1 index /Position get
  /width get                       % => Box ParentWidth Width
  2 index get-width-constraint     % => Box ParentWidth Width WC
  dup /apply get exec              % => Box W
  exch pop
} def

% Calculate the content upper-left corner position in curent flow
/box-generic-guess-corner {        % => Parent This
  1 index get-current-x
  1 index get-extra-left add
  1 index put-left

  1 index get-current-y
  1 index get-extra-top sub
  1 index put-top

  pop pop
} def

/box-generic-is-null {
  pop false
} def

/box-generic-is-whitespace {
  pop false
} def

/box-generic-line-break-allowed {  % => This
  dup /white-space get-css-value /normal eq
  1 index /pseudo-nowrap get-css-value /normal eq
  and                              % => This Flag
  exch pop
} def

/box-generic-move-to {             % => Y X This
  2 index 1 index get-top sub      % => Y X This DY
  2 index 2 index get-left sub     % => Y X This DY DX
  2 index
  /offset call-method              % => Y X This
  pop pop pop
} def

/box-generic-offset {              % => DY DX This
  2 index 1 index get-top add
  1 index put-top

  1 index 1 index get-left add
  1 index put-left
  
  pop pop pop
} def

/box-generic-pre-reflow-images {
  pop
} def

/box-generic-reflow {              % => Context Parent This
  pop pop pop                      % =>

  (Unimplemented /reflow method) print
  quit
} def                              % =>

/box-generic-reflow-anchors {      % => List Viewport Box
% make local link anchor
  dup /pseudo-link-destination
  get-css-value
  dup () ne {                      % => List Viewport Box Destination
    <<
      /page 
      3 index get-top bmargin sub
      real-page-height 
      
% NOTE: the coordinate system begins at the bottom of the very first page and directed to the top!
  
      div 0.5 add floor neg 2 add % => List Viewport Box Destination << /page <page>
      
      /x 5 index get-left         % => List Viewport Box Destination << /page <page> /x <x>

% As in most cases we'll use an empty <a name="..."></a> with fake zero-height whitespace inside,
% we can determine only the bottom edge of the linked area
      /y 
      7 index get-bottom bmargin sub 
      4 index 1 sub real-page-height mul 
      add floor bmargin add
% now add some small vertical offset to make text in linked area visible       
      20 pt add
    >>                             % => List Viewport Box Destination Anchor
    4 index 3 1 roll               % => List Viewport Box List Destination Anchor
    put                            % => List Viewport Box
  } {
    pop
  } ifelse                         % => List Viewport Box 
  
  pop pop pop
} def

/box-generic-reflow-inline {
  pop
} def

/box-generic-setup-methods {       % => Box
  dup get-box-dict /Methods get    % => Box Methods
  dup /get-extra-line-left  { box-generic-get-extra-line-left } put
  dup /get-extra-line-right { box-generic-get-extra-line-right } put
  dup /get-real-full-height { box-generic-get-real-full-height } put
  dup /get-width            { box-generic-get-width } put
  dup /is-null              { box-generic-is-null } put
  dup /is-whitespace        { box-generic-is-whitespace } put
  dup /line-break-allowed   { box-generic-line-break-allowed } put
  dup /offset               { box-generic-offset } put
  dup /pre-reflow-images    { box-generic-pre-reflow-images } put
  dup /reflow               { box-generic-reflow } put
  dup /reflow-inline        { box-generic-reflow-inline } put
  dup /reflow-anchors       { box-generic-reflow-anchors } put
  dup /show                 { box-generic-show } put
  pop pop
} def

/box-generic-show {                % => Viewport This   
% make a external/local link using pdfmark operator, if needed  
  dup /pseudo-link-target
  get-css-value                    % => Viewport This Linktarget
  dup /type get /uri eq {
    [ /Rect [ 4 index get-left        
              5 index get-bottom        
              6 index get-right        
              7 index get-top ]      
      /Action << /Subtype /URI /URI 8 index /value get >>      
      /Border [0 0 0]      
      /Subtype /Link      
      /ANN pdfmark  
  } if

  dup /type get /local eq {        % => Viewport This Linktarget
    2 index exch /value get        % => Viewport This Viewport Linktarget
    viewport-get-anchor            % => Viewport This AnchorData
    dup /null ne {
      [ /Rect [ 4 index get-left        
                5 index get-bottom        
                6 index get-right        
                7 index get-top ]
        /Page 4 index /page get 
        /View [ /XYZ null 9 index /y get null ]
        /Border [0 0 0]      
        /Subtype /Link      
        /ANN pdfmark
    } if
  } if
  
  pop
   
  dup
  2 index
  2 index get-border
  border-show

  dup
  2 index
  2 index get-background
  background-show

  setting-debug-box {
    0 0 0 setrgbcolor
    0.1 setlinewidth
    dup get-left  1 index get-top moveto
    dup get-right 1 index get-top lineto
    dup get-right 1 index get-bottom lineto
    dup get-left  1 index get-bottom lineto
    closepath
    stroke
  } if

% Set the text color
% Note that text color is used not only for text drawing (for example, list item markers 
% are drawn with text color)
  dup /color get-css-value
  color-apply

  pop pop
} def

% Common

/get-additional-text-indent {
  /AdditionalTextIndent get
} def

/get-background {
  /background get-css-value
} def

/get-baseline {
  /Position get
  /baseline get
} def

/get-baseline-offset {             % => Box
  dup get-baseline
  1 index get-default-baseline sub
  exch pop
} def

/get-border {
  /border get-css-value
} def

/get-border-bottom {
  /border get-css-value
  /bottom get
} def

/get-border-bottom-width {
  get-border-bottom
  edge-get-width
} def

/get-border-left {
  /border get-css-value
  /left get
} def

/get-border-left-width {
  get-border-left
  edge-get-width
} def

/get-border-right {
  /border get-css-value
  /right get
} def

/get-border-right-width {
  get-border-right
  edge-get-width
} def

/get-border-top {
  /border get-css-value
  /top get
} def

/get-border-top-width {
  get-border-top
  edge-get-width
} def

/get-bottom {
  dup get-top 
  1 index get-height sub
  exch pop
} def

/get-bottom-border {
  dup get-bottom-padding
  1 index get-border-bottom-width
  sub
  exch pop
} def

/get-bottom-margin {
  dup get-bottom-border
  1 index get-margin-bottom
  sub
  exch pop
} def

/get-bottom-padding {
  dup get-bottom
  1 index get-padding-bottom
  sub exch pop
} def

/get-box-dict {} def

% Get the calculated value of a CSS property for this box
%
% @param Box reference to a box object
% @param Name name of a CSS property
%
/get-css-value {                   % => Box Name
  1 index get-box-dict
  /CSS get                         % => Box Name CSS
  
% Check if this value is known 
  dup 2 index known not {
    (Value is not known:) print
    1 index ==
    quit
  } if

% Get the value
  1 index get                     % => Box Name CSSValue

% clear the stack
  exch pop
  exch pop
} def

/get-current-x {
  /CurrentX get
} def

/get-current-y {
  /CurrentY get
} def

/get-default-baseline {
  /Position get
  /default-baseline get
} def

/get-extra-bottom {
  dup get-padding-bottom exch 
  dup get-margin-bottom exch
  dup get-border-bottom-width exch
  pop
  add add
} def

/get-extra-left {
  dup get-padding-left exch 
  dup get-margin-left exch 
  dup get-border-left-width exch 
  pop 
  add add
} def

/get-extra-right {
  dup get-padding-right exch 
  dup get-margin-right exch 
  dup get-border-right-width exch 
  pop 
  add add
} def

/get-extra-top {
  dup get-padding-top exch 
  dup get-margin-top exch
  dup get-border-top-width exch
  pop
  add add
} def

/get-full-width  { 
  dup /get-width call-method
  exch get-hor-extra
  add
} def

/get-full-height { 
  dup get-height 
  exch get-vert-extra
  add
} def

/get-height {                      % => Box
  dup                              % => Box Box 
  dup /Position get
  /height get                      % => Box Box RawHeight
  1 index get-height-constraint    % => Box Box RawHeight HC
  hc-apply
  exch pop                         % => H
} def

/get-height-constraint {           % => Box
  /HeightConstraint get
} def

/get-hor-extra  {                  % => Box
  dup get-extra-left
  1 index get-extra-right
  add

  exch pop
} def

/get-left {
  get-box-dict /Position get /left get
} def

/get-left-border {
  dup get-left-padding
  1 index get-border-left-width
  sub
  exch pop
} def

/get-left-padding {
  dup get-left
  1 index get-padding-left
  sub
  exch pop
} def

/get-left-margin      {
  dup get-left-border
  1 index get-margin-left
  sub
  exch pop
} def

/get-margin-bottom {               % => Box
  /margin get-css-value
  /bottom get
  /value get
} def

/get-margin-left {                 % => Box
  /margin get-css-value
  /left get
  /value get
} def

/get-margin-percentage-left {      % => Box
  /margin get-css-value 
  /left get
  /percentage get
} def

/get-margin-percentage-right {     % => Box
  /margin get-css-value 
  /right get
  /percentage get
} def

/get-margin-right {                % => Box
  /margin get-css-value
  /right get
  /value get
} def

/get-margin-top {                  % => Box
  /margin get-css-value
  /top get
  /value get
} def

/get-padding {                     % => Box
  /padding get-css-value
} def

/get-padding-bottom {              % => Box
  /padding get-css-value
  /bottom get
  /value get
} def

/get-padding-left {                % => Box
  /padding get-css-value
  /left get
  /value get
} def

/get-padding-right {               % => Box
  /padding get-css-value
  /right get
  /value get
} def

/get-padding-top {                 % => Box
  /padding get-css-value
  /top get
  /value get
} def

/get-parent {
  /Parent get
} def

/get-right {
  dup get-left                     % => Box Left
  1 index /get-width call-method add 
  exch pop
} def

/get-right-border {
  dup get-right-padding
  1 index get-border-right-width
  add
  exch pop
} def

/get-right-margin {
  dup get-right-border
  1 index get-margin-right
  add
  exch pop
} def

/get-right-padding {
  dup get-right
  1 index get-padding-right
  add
  exch pop
} def

/get-top {
  dup /Position get /top get       % => Box top
  1 index get-baseline-offset sub  % => Box Top'
  exch pop
} def

/get-top-border {
  dup get-top-padding
  1 index get-border-top-width
  add
  exch pop
} def

/get-top-margin {
  dup get-top-border
  1 index get-margin-top
  add
  exch pop
} def

/get-top-padding {
  dup get-top
  1 index get-padding-top
  add
  exch pop
} def

/get-uid {                         % => Box
  get-box-dict
  /UID get
} def

/get-vert-extra  {                  % => Box
  dup get-extra-top
  1 index get-extra-bottom
  add

  exch pop
} def

/get-width-constraint {            % => Box
  get-box-dict
  /WidthConstraint get
} def

/is-margin-auto-left {             % => Box
  /margin get-css-value
  /left get
  /auto get
} def

/is-margin-auto-right {            % => Box
  /margin get-css-value
  /right get
  /auto get
} def

/put-additional-text-indent {      % => Value Box
  exch /AdditionalTextIndent exch put
} def

/put-baseline {
  /Position get
  exch 
  /baseline
  exch
  put
} def

/put-border {
  exch /border exch put-css-value 
} def

/put-content {
  exch
  /Content exch                    % => Box /CurrentX Value
  put
} def

/put-css-value {                   % => Box Property Value
  2 index /CSS get                 % => Box Property Value CSS
  3 1 roll                         % => Box CSS Property Value
  put pop
} def

/put-current-x {                   % => Value Box
  exch
  /CurrentX exch                   % => Box /CurrentX Value
  put
} def

/put-current-y {                   % => Value Box
  exch
  /CurrentY exch                   % => Box /CurrentY Value
  put  
} def

/put-default-baseline {
  /Position get
  exch 
  /default-baseline
  exch
  put
} def

/put-full-width {                  % => Value Box
  dup get-hor-extra                % => Value Box HE
  2 index exch sub                 % => Value Box Value-HE
  1 index put-width                % => Value Box
  pop pop
} def

/put-height {
  /Position get
  exch /height exch put
} def

/put-height-constraint {           % => Value box
  exch /HeightConstraint exch put
} def

/put-left {                        % => Value Box
  get-box-dict
  /Position get
  exch /left exch put
} def

/put-margin-bottom {               % => Value Box
  /margin get-css-value            % => Value Margins
  /bottom get                      % => Value MarginsValues
  exch /value exch put
} def

/put-margin-left {                 % => Value Box
  /margin get-css-value            % => Value Margins
  /left get                        % => Value MarginsValues
  exch /value exch put
} def

/put-margin-right {                % => Value Box
  /margin get-css-value            % => Value Margins
  /right get                       % => Value MarginsValues
  exch /value exch put
} def

/put-margin-top {                  % => Value Box
  /margin get-css-value            % => Value Margins
  /top get                         % => Value MarginsValues
  exch /value exch put
} def

/put-padding {                     % => Value Box
  exch /padding exch put-css-value 
} def

/put-parent {
  exch /Parent exch put
} def

/put-top {                         % => Value Box
  exch
  1 index get-baseline-offset
  add exch
    
  /Position get
  exch /top exch put
} def

/put-uid {
  exch /UID exch put
} def

/put-width {
  /Position get
  exch /width exch put
} def

/put-width-constraint {            % => Value Box
  exch /WidthConstraint exch put
} def