diff options
Diffstat (limited to 'tex/context/base/typo-dig.lua')
| -rw-r--r-- | tex/context/base/typo-dig.lua | 324 |
1 files changed, 162 insertions, 162 deletions
diff --git a/tex/context/base/typo-dig.lua b/tex/context/base/typo-dig.lua index 9cf8417b8..62d17fa3b 100644 --- a/tex/context/base/typo-dig.lua +++ b/tex/context/base/typo-dig.lua @@ -1,162 +1,162 @@ -if not modules then modules = { } end modules ['typo-dig'] = {
- version = 1.001,
- comment = "companion to typo-dig.mkiv",
- author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
- copyright = "PRAGMA ADE / ConTeXt Development Team",
- license = "see context related readme files"
-}
-
--- we might consider doing this after the otf pass because now osf do not work
--- out well in node mode.
-
-local next, type = next, type
-local format, insert = string.format, table.insert
-local round, div = math.round, math.div
-
-local trace_digits = false trackers.register("typesetters.digits", function(v) trace_digits = v end)
-
-local report_digits = logs.reporter("typesetting","digits")
-
-local nodes, node = nodes, node
-
-local hpack_node = node.hpack
-local traverse_id = node.traverse_id
-local insert_node_before = node.insert_before
-local insert_node_after = node.insert_after
-
-local texattribute = tex.attribute
-local unsetvalue = attributes.unsetvalue
-
-local nodecodes = nodes.nodecodes
-local glyph_code = nodecodes.glyph
-
-local nodepool = nodes.pool
-local tasks = nodes.tasks
-
-local new_glue = nodepool.glue
-
-local fonthashes = fonts.hashes
-local fontdata = fonthashes.identifiers
-local chardata = fonthashes.characters
-local quaddata = fonthashes.quads
-
-local v_reset = interfaces.variables.reset
-
-local charbase = characters.data
-local getdigitwidth = fonts.helpers.getdigitwidth
-
-typesetters = typesetters or { }
-local typesetters = typesetters
-
-typesetters.digits = typesetters.digits or { }
-local digits = typesetters.digits
-
-digits.actions = { }
-local actions = digits.actions
-
-local a_digits = attributes.private("digits")
-digits.attribute = a_digits
-
--- at some point we can manipulate the glyph node so then i need
--- to rewrite this then
-
-function nodes.aligned(head,start,stop,width,how)
- if how == "flushright" or how == "middle" then
- head, start = insert_node_before(head,start,new_glue(0,65536,65536))
- end
- if how == "flushleft" or how == "middle" then
- head, stop = insert_node_after(head,stop,new_glue(0,65536,65536))
- end
- local prv, nxt = start.prev, stop.next
- start.prev, stop.next = nil, nil
- local packed = hpack_node(start,width,"exactly") -- no directional mess here, just lr
- if prv then
- prv.next, packed.prev = packed, prv
- end
- if nxt then
- nxt.prev, packed.next = packed, nxt
- end
- if packed.prev then
- return head, packed
- else
- return packed, packed
- end
-end
-
-actions[1] = function(head,start,attribute,attr)
- local font = start.font
- local char = start.char
- local unic = chardata[font][char].tounicode
- local what = unic and tonumber(unic,16) or char
- if charbase[what].category == "nd" then
- local oldwidth, newwidth = start.width, getdigitwidth(font)
- if newwidth ~= oldwidth then
- if trace_digits then
- report_digits("digit trigger %a, instance %a, char %C, unicode %U, delta %s",
- attr%100,div(attr,100),char,what,newwidth-oldwidth)
- end
- head, start = nodes.aligned(head,start,start,newwidth,"middle")
- return head, start, true
- end
- end
- return head, start, false
-end
-
-local function process(namespace,attribute,head)
- local done, current, ok = false, head, false
- while current do
- if current.id == glyph_code then
- local attr = current[attribute]
- if attr and attr > 0 then
- current[attribute] = unsetvalue
- local action = actions[attr%100] -- map back to low number
- if action then
- head, current, ok = action(head,current,attribute,attr)
- done = done and ok
- elseif trace_digits then
- report_digits("unknown digit trigger %a",attr)
- end
- end
- end
- current = current and current.next
- end
- return head, done
-end
-
-local m, enabled = 0, false -- a trick to make neighbouring ranges work
-
-function digits.set(n) -- number or 'reset'
- if n == v_reset then
- n = unsetvalue
- else
- n = tonumber(n)
- if n then
- if not enabled then
- tasks.enableaction("processors","typesetters.digits.handler")
- if trace_digits then
- report_digits("enabling digit handler")
- end
- enabled = true
- end
- if m == 100 then
- m = 1
- else
- m = m + 1
- end
- n = m * 100 + n
- else
- n = unsetvalue
- end
- end
- texattribute[a_digits] = n
-end
-
-digits.handler = nodes.installattributehandler { -- we could avoid this wrapper
- name = "digits",
- namespace = digits,
- processor = process,
-}
-
--- interface
-
-commands.setdigitsmanipulation = digits.set
+if not modules then modules = { } end modules ['typo-dig'] = { + version = 1.001, + comment = "companion to typo-dig.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- we might consider doing this after the otf pass because now osf do not work +-- out well in node mode. + +local next, type = next, type +local format, insert = string.format, table.insert +local round, div = math.round, math.div + +local trace_digits = false trackers.register("typesetters.digits", function(v) trace_digits = v end) + +local report_digits = logs.reporter("typesetting","digits") + +local nodes, node = nodes, node + +local hpack_node = node.hpack +local traverse_id = node.traverse_id +local insert_node_before = node.insert_before +local insert_node_after = node.insert_after + +local texattribute = tex.attribute +local unsetvalue = attributes.unsetvalue + +local nodecodes = nodes.nodecodes +local glyph_code = nodecodes.glyph + +local nodepool = nodes.pool +local tasks = nodes.tasks + +local new_glue = nodepool.glue + +local fonthashes = fonts.hashes +local fontdata = fonthashes.identifiers +local chardata = fonthashes.characters +local quaddata = fonthashes.quads + +local v_reset = interfaces.variables.reset + +local charbase = characters.data +local getdigitwidth = fonts.helpers.getdigitwidth + +typesetters = typesetters or { } +local typesetters = typesetters + +typesetters.digits = typesetters.digits or { } +local digits = typesetters.digits + +digits.actions = { } +local actions = digits.actions + +local a_digits = attributes.private("digits") +digits.attribute = a_digits + +-- at some point we can manipulate the glyph node so then i need +-- to rewrite this then + +function nodes.aligned(head,start,stop,width,how) + if how == "flushright" or how == "middle" then + head, start = insert_node_before(head,start,new_glue(0,65536,65536)) + end + if how == "flushleft" or how == "middle" then + head, stop = insert_node_after(head,stop,new_glue(0,65536,65536)) + end + local prv, nxt = start.prev, stop.next + start.prev, stop.next = nil, nil + local packed = hpack_node(start,width,"exactly") -- no directional mess here, just lr + if prv then + prv.next, packed.prev = packed, prv + end + if nxt then + nxt.prev, packed.next = packed, nxt + end + if packed.prev then + return head, packed + else + return packed, packed + end +end + +actions[1] = function(head,start,attribute,attr) + local font = start.font + local char = start.char + local unic = chardata[font][char].tounicode + local what = unic and tonumber(unic,16) or char + if charbase[what].category == "nd" then + local oldwidth, newwidth = start.width, getdigitwidth(font) + if newwidth ~= oldwidth then + if trace_digits then + report_digits("digit trigger %a, instance %a, char %C, unicode %U, delta %s", + attr%100,div(attr,100),char,what,newwidth-oldwidth) + end + head, start = nodes.aligned(head,start,start,newwidth,"middle") + return head, start, true + end + end + return head, start, false +end + +local function process(namespace,attribute,head) + local done, current, ok = false, head, false + while current do + if current.id == glyph_code then + local attr = current[attribute] + if attr and attr > 0 then + current[attribute] = unsetvalue + local action = actions[attr%100] -- map back to low number + if action then + head, current, ok = action(head,current,attribute,attr) + done = done and ok + elseif trace_digits then + report_digits("unknown digit trigger %a",attr) + end + end + end + current = current and current.next + end + return head, done +end + +local m, enabled = 0, false -- a trick to make neighbouring ranges work + +function digits.set(n) -- number or 'reset' + if n == v_reset then + n = unsetvalue + else + n = tonumber(n) + if n then + if not enabled then + tasks.enableaction("processors","typesetters.digits.handler") + if trace_digits then + report_digits("enabling digit handler") + end + enabled = true + end + if m == 100 then + m = 1 + else + m = m + 1 + end + n = m * 100 + n + else + n = unsetvalue + end + end + texattribute[a_digits] = n +end + +digits.handler = nodes.installattributehandler { -- we could avoid this wrapper + name = "digits", + namespace = digits, + processor = process, +} + +-- interface + +commands.setdigitsmanipulation = digits.set |