357 lines
11 KiB
PostScript
357 lines
11 KiB
PostScript
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/box-inline-create { % =>
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box-generic-inline-create
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dup /Lines [] put
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dup box-inline-setup-methods
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dup /box-inline add-type
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} def % => Box
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% Extends the existing line box to include the given child
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% OR starts new line box, if current child is to the left of the box right edge
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% (which should not happen white the line box is filled)
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%
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% @param $box child box which will be first in this line box
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% @param $line_no number of line box
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%
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/box-inline-extend-line { % => LineNo Box This
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dup box-inline-get-lines
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length % => LineNo Box This NumLines
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3 index le { % => LineNo Box This
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% New line box started
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2 index
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2 index
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2 index
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box-inline-init-line % => LineNo Box This
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2 index % => LineNo Box This LineNo
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} { % => LineNo Box This
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1 index get-left % => LineNo Box This BoxLeft
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1 index box-inline-get-lines % => LineNo Box This BoxLeft Lines
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4 index get % => LineNo Box This BoxLeft Line
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line-get-right % => LineNo Box This BoxLeft LineRight
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lt { % => LineNo Box This
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2 index 1 add % => LineNo Box This LineNo'
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dup
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3 index
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3 index % => LineNo Box This LineNo' LineNo' Box This
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box-inline-init-line % => LineNo Box This LineNo'
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} {
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dup box-inline-get-lines % => LineNo Box This Lines
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3 index get % => LineNo Box This Line
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2 index exch line-extend % => LineNo Box This
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2 index % => LineNo Box This LineNo
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} ifelse % =>
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} ifelse % => LineNo Box This LineNo'
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exch pop
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exch pop
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exch pop
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} def
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/box-inline-get-extra-line-left { % => This
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dup get-extra-left % => This EL
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1 index get-parent /null ne { % => This EL
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1 index get-parent
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/get-extra-line-left
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call-method % => This EL ParentEL
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add
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} if
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exch pop
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} def
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/box-inline-get-extra-line-right {
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dup get-extra-right % => This EL
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1 index get-parent /null ne { % => This EL
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1 index get-parent
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/get-extra-line-right
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call-method % => This EL ParentEL
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add
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} if
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exch pop
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} def
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/box-inline-get-lines {
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/Lines get
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} def
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% Initialize next line box inside this inline
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%
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% Adds the next element to _lines array inside the current object and initializes it with the
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% $box parameters
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%
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% @param $box child box which will be first in this line box
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% @param $line_no number of line box
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%
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/box-inline-init-line { % => LineNo Box This
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1 index
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line-create % => LinoNo Box This Line
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1 index box-inline-get-lines
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array-prepend
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1 index box-inline-put-lines % => LineNo Box This
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pop pop pop
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} def
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/box-inline-merge-line { % => LineNo Box This
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1 index box-inline-get-lines { % => LineNo Box This Line
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1 index box-inline-get-lines % => LineNo Box This Line Lines
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array-prepend % => LineNo Box This Lines'
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1 index box-inline-put-lines % => LineNo Box This
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} forall % => LineNo Box This
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exch pop
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exch pop
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box-inline-get-lines length % => LineNo'
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} def
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/box-inline-offset { % => DY DX This
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3 copy
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box-container-offset % => DY DX This
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dup box-inline-get-lines { % => DY DX This Line
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3 index exch
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3 index exch
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line-offset % => DY DX This
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} forall
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pop pop pop
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} def
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/box-inline-put-lines { % => Value This
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exch /Lines exch put
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} def
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/box-inline-reflow { % => Context Parent This
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% Note that inline boxes (actually SPANS)
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% are never added to the parent's line boxes
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% Move current box to the parent's current coordinates
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% Note that span box will start at the far left of the parent, NOT on its current X!
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% Also, note that inline box can have margins, padding and borders!
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1 index get-left
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1 index put-left
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1 index get-top
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1 index get-extra-top sub
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1 index put-top % => Context Parent This
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% first line of the SPAN will be offset to its parent current-x PLUS the left padding of current span!
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1 index get-current-x
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1 index get-extra-left
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add % => Context Parent This CX
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dup 3 index put-current-x % => Context Parent This CX
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1 index put-current-x % => Context Pareht This
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% Note that the same operation IS NOT applied to parent current-y!
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% The padding space is just extended to the top possibly OVERLAPPING the above boxes.
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0 1 index put-width
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% Reflow contents
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0 % => Context Parent This LineNo
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1 index get-content { % => Context Parent This LineNo Child
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% Add current element into _parent_ line box and reflow it
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4 index
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4 index % => Context Parent This LineNo Child Context Parent
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2 index
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/reflow call-method % => Context Parent This LineNo Child
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% Track the real height of the inline box; it will be used by other functions
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% (say, functions calculating content height)
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dup get-bottom-margin % => Context Parent This LineNo' Child BM
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3 index
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box-generic-extend-height % => Context Parent This LineNo Child
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pop
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} forall % => Context Parent This LineNo
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pop % => Context Parent This
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% Extend parent height to fit this inline box
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% TODO: Is it really required? Seems that it will be accomplished by child reflow functions
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% dup get-bottom-margin % => Context Parent This GBM
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% 2 index
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% box-generic-extend-height % => Context Parent This
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% Apply right extra space value (padding + border + margin)
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1 index get-current-x
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1 index get-extra-right
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add
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2 index put-current-x
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% After reflow_content we should have the top stack value replace by the value
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% of last child bottom collapsed margin
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dup box-container-get-first-data /null ne {
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2 index context-pop-collapsed-margin
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0 3 index context-push-collapsed-margin
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} if
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pop pop pop
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} def
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/box-inline-reflow-inline { % => This
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0 % => This LineNo
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1 index get-content { % => This LineNo Child
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dup /reflow-inline call-method
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dup /box-inline is-a {
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1 index % => This LineNo Child LineNo
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1 index % => This LineNo Child LineNo Child
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4 index % => This LineNo Child LineNo Child This
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box-inline-merge-line % => This LineNo Child LineNo'
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3 2 roll % => This Child LineNo' LineNo
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pop
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exch % => This LineNo' Child
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} {
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1 index % => This LineNo Child LineNo
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1 index % => This LineNo Child LineNo Child
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4 index % => This LineNo Child LineNo Child This
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box-inline-extend-line % => This LineNo Child LineNo'
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3 2 roll % => This Child LineNo' LineNo
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pop
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exch % => This LineNo' Child
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} ifelse % => This LineNo' Child
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pop
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} forall
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pop pop
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} def
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/box-inline-setup-methods { % => Box
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dup get-box-dict /Methods get % => Box Methods
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dup /get-extra-line-left {box-inline-get-extra-line-left} put
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dup /get-extra-line-right {box-inline-get-extra-line-right} put
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dup /offset {box-inline-offset} put
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dup /reflow {box-inline-reflow} put
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dup /reflow-inline {box-inline-reflow-inline} put
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dup /show {box-inline-show} put
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pop pop
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} def
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/box-inline-show { % => Viewport This
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% Show line boxes background and borders
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dup box-inline-get-lines { % => Viewport This Line
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1 index 1 index line-fake-box % => Viewport This Line FakeBox
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dup
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4 index % => Viewport This Line FakeBox FakeBox Viewport
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4 index get-background
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background-show % => Viewport This Line FakeBox
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dup
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4 index
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4 index get-border
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border-show % => Viewport This Line FakeBox
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pop pop
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} forall
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% Show content
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dup get-content { % => Viewport This Child
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2 index exch
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/show call-method % => Viewport This
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} forall
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pop pop
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} def
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/line-create { % => Box
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<< >>
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dup /right 3 index get-right put
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dup /left 3 index get-left put
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dup /top 3 index get-top put
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dup /bottom 3 index get-bottom put
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exch pop
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} def
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/line-extend { % => Box This
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dup /top get % => Box This V1
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2 index get-top % => Box This V1 V2
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max
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1 index exch /top exch put
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dup /right get % => Box This V1
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2 index get-right % => Box This V1 V2
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max
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1 index exch /right exch put
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dup /bottom get % => Box This V1
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2 index get-bottom % => Box This V1 V2
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min
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1 index exch /bottom exch put
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% Left edge of the line box should never be modified
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pop pop
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} def
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/line-get-right {
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/right get
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} def
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/line-fake-box { % => Box This
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% Create the fake box object
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box-block-create % => Box This FakeBox
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% Setup fake box size
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1 index /left get
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1 index put-left
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1 index /right get
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2 index /left get sub
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1 index put-width
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1 index /top get
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1 index get-baseline sub
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1 index put-top
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1 index /top get
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2 index /bottom get sub
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1 index put-height
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% Setup padding value
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2 index get-padding
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1 index put-padding
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% Setup fake box border and background
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2 index get-background
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1 index put-background
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2 index get-border
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1 index put-border
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exch pop
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exch pop
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} def
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/line-offset { % => DY DX This
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dup /top get % => DY DX This Top
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3 index add % => DY DX This Top'
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1 index exch % => DY DX This This Top'
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/top exch put % => DY DX This
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dup /bottom get % => DY DX This Bottom
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3 index add % => DY DX This Bottom'
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1 index exch % => DY DX This This Bottom'
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/bottom exch put % => DY DX This
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dup /left get % => DY DX This Left
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2 index add % => DY DX This Left'
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1 index exch % => DY DX This This Left'
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/left exch put % => DY DX This
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dup /right get % => DY DX This Right
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2 index add % => DY DX This Right'
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1 index exch % => DY DX This This Right'
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/right exch put % => DY DX This
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pop pop pop
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} def
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