diff options
Diffstat (limited to 'tex/context/base/trac-jus.lua')
-rw-r--r-- | tex/context/base/trac-jus.lua | 272 |
1 files changed, 136 insertions, 136 deletions
diff --git a/tex/context/base/trac-jus.lua b/tex/context/base/trac-jus.lua index 4be9b30f8..9d99f059d 100644 --- a/tex/context/base/trac-jus.lua +++ b/tex/context/base/trac-jus.lua @@ -1,136 +1,136 @@ -if not modules then modules = { } end modules ['trac-jus'] = {
- version = 1.001,
- comment = "companion to trac-jus.mkiv",
- author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
- copyright = "PRAGMA ADE / ConTeXt Development Team",
- license = "see context related readme files"
-}
-
-local checkers = typesetters.checkers or { }
-typesetters.checkers = checkers
-
------ report_justification = logs.reporter("visualize","justification")
-
-local a_alignstate = attributes.private("alignstate")
-local a_justification = attributes.private("justification")
-
-local tracers = nodes.tracers
-local setcolor = tracers.colors.set
-local settransparency = tracers.transparencies.set
-
-local new_rule = nodes.pool.rule
-local new_glue = nodes.pool.glue
-local new_kern = nodes.pool.kern
-local concat_nodes = nodes.concat
-local hpack_nodes = node.hpack
-local copy_node = node.copy
-local get_list_dimensions = node.dimensions
-local hlist_code = nodes.nodecodes.hlist
-
-local tex_set_attribute = tex.setattribute
-local unsetvalue = attributes.unsetvalue
-
-local min_threshold = 0
-local max_threshold = 0
-
-local function set(n)
- nodes.tasks.enableaction("mvlbuilders", "typesetters.checkers.handler")
- nodes.tasks.enableaction("vboxbuilders","typesetters.checkers.handler")
- tex_set_attribute(a_justification,n or 1)
- function typesetters.checkers.set(n)
- tex_set_attribute(a_justification,n or 1)
- end
-end
-
-local function reset()
- tex_set_attribute(a_justification,unsetvalue)
-end
-
-checkers.set = set
-checkers.reset = reset
-
-function commands.showjustification(n)
- set(n)
-end
-
-trackers.register("visualizers.justification", function(v)
- if v then
- set(1)
- else
- reset()
- end
-end)
-
-function checkers.handler(head)
- for current in node.traverse_id(hlist_code,head) do
- if current[a_justification] == 1 then
- current[a_justification] = 0
- local width = current.width
- if width > 0 then
- local list = current.list
- if list then
- local naturalwidth, naturalheight, naturaldepth = get_list_dimensions(list)
- local delta = naturalwidth - width
- if naturalwidth == 0 or delta == 0 then
- -- special box
- elseif delta >= max_threshold then
- local rule = new_rule(delta,naturalheight,naturaldepth)
- list = hpack_nodes(list,width,"exactly")
- if list.glue_set == 1 then
- setcolor(rule,"trace:dr")
- settransparency(rule,"trace:dr")
- else
- setcolor(rule,"trace:db")
- settransparency(rule,"trace:db")
- end
- rule = hpack_nodes(rule)
- rule.width = 0
- rule.height = 0
- rule.depth = 0
- current.list = concat_nodes { list, rule }
- -- current.list = concat_nodes { list, new_kern(-naturalwidth+width), rule }
- elseif delta <= min_threshold then
- local alignstate = list[a_alignstate]
- if alignstate == 1 then
- local rule = new_rule(-delta,naturalheight,naturaldepth)
- setcolor(rule,"trace:dc")
- settransparency(rule,"trace:dc")
- rule = hpack_nodes(rule)
- rule.height = 0
- rule.depth = 0
- rule.width = 0
- current.list = nodes.concat { rule, list }
- elseif alignstate == 2 then
- local rule = new_rule(-delta/2,naturalheight,naturaldepth)
- setcolor(rule,"trace:dy")
- settransparency(rule,"trace:dy")
- rule = hpack_nodes(rule)
- rule.width = 0
- rule.height = 0
- rule.depth = 0
- current.list = concat_nodes { copy_node(rule), list, new_kern(delta/2), rule }
- elseif alignstate == 3 then
- local rule = new_rule(-delta,naturalheight,naturaldepth)
- setcolor(rule,"trace:dm")
- settransparency(rule,"trace:dm")
- rule = hpack_nodes(rule)
- rule.height = 0
- rule.depth = 0
- current.list = concat_nodes { list, new_kern(delta), rule }
- else
- local rule = new_rule(-delta,naturalheight,naturaldepth)
- setcolor(rule,"trace:dg")
- settransparency(rule,"trace:dg")
- rule = hpack_nodes(rule)
- rule.height = 0
- rule.depth = 0
- rule.width = 0
- current.list = concat_nodes { list, new_kern(delta), rule }
- end
- end
- end
- end
- end
- end
- return head
-end
+if not modules then modules = { } end modules ['trac-jus'] = { + version = 1.001, + comment = "companion to trac-jus.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local checkers = typesetters.checkers or { } +typesetters.checkers = checkers + +----- report_justification = logs.reporter("visualize","justification") + +local a_alignstate = attributes.private("alignstate") +local a_justification = attributes.private("justification") + +local tracers = nodes.tracers +local setcolor = tracers.colors.set +local settransparency = tracers.transparencies.set + +local new_rule = nodes.pool.rule +local new_glue = nodes.pool.glue +local new_kern = nodes.pool.kern +local concat_nodes = nodes.concat +local hpack_nodes = node.hpack +local copy_node = node.copy +local get_list_dimensions = node.dimensions +local hlist_code = nodes.nodecodes.hlist + +local tex_set_attribute = tex.setattribute +local unsetvalue = attributes.unsetvalue + +local min_threshold = 0 +local max_threshold = 0 + +local function set(n) + nodes.tasks.enableaction("mvlbuilders", "typesetters.checkers.handler") + nodes.tasks.enableaction("vboxbuilders","typesetters.checkers.handler") + tex_set_attribute(a_justification,n or 1) + function typesetters.checkers.set(n) + tex_set_attribute(a_justification,n or 1) + end +end + +local function reset() + tex_set_attribute(a_justification,unsetvalue) +end + +checkers.set = set +checkers.reset = reset + +function commands.showjustification(n) + set(n) +end + +trackers.register("visualizers.justification", function(v) + if v then + set(1) + else + reset() + end +end) + +function checkers.handler(head) + for current in node.traverse_id(hlist_code,head) do + if current[a_justification] == 1 then + current[a_justification] = 0 + local width = current.width + if width > 0 then + local list = current.list + if list then + local naturalwidth, naturalheight, naturaldepth = get_list_dimensions(list) + local delta = naturalwidth - width + if naturalwidth == 0 or delta == 0 then + -- special box + elseif delta >= max_threshold then + local rule = new_rule(delta,naturalheight,naturaldepth) + list = hpack_nodes(list,width,"exactly") + if list.glue_set == 1 then + setcolor(rule,"trace:dr") + settransparency(rule,"trace:dr") + else + setcolor(rule,"trace:db") + settransparency(rule,"trace:db") + end + rule = hpack_nodes(rule) + rule.width = 0 + rule.height = 0 + rule.depth = 0 + current.list = concat_nodes { list, rule } + -- current.list = concat_nodes { list, new_kern(-naturalwidth+width), rule } + elseif delta <= min_threshold then + local alignstate = list[a_alignstate] + if alignstate == 1 then + local rule = new_rule(-delta,naturalheight,naturaldepth) + setcolor(rule,"trace:dc") + settransparency(rule,"trace:dc") + rule = hpack_nodes(rule) + rule.height = 0 + rule.depth = 0 + rule.width = 0 + current.list = nodes.concat { rule, list } + elseif alignstate == 2 then + local rule = new_rule(-delta/2,naturalheight,naturaldepth) + setcolor(rule,"trace:dy") + settransparency(rule,"trace:dy") + rule = hpack_nodes(rule) + rule.width = 0 + rule.height = 0 + rule.depth = 0 + current.list = concat_nodes { copy_node(rule), list, new_kern(delta/2), rule } + elseif alignstate == 3 then + local rule = new_rule(-delta,naturalheight,naturaldepth) + setcolor(rule,"trace:dm") + settransparency(rule,"trace:dm") + rule = hpack_nodes(rule) + rule.height = 0 + rule.depth = 0 + current.list = concat_nodes { list, new_kern(delta), rule } + else + local rule = new_rule(-delta,naturalheight,naturaldepth) + setcolor(rule,"trace:dg") + settransparency(rule,"trace:dg") + rule = hpack_nodes(rule) + rule.height = 0 + rule.depth = 0 + rule.width = 0 + current.list = concat_nodes { list, new_kern(delta), rule } + end + end + end + end + end + end + return head +end |