diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/attr-lay.lua')
| -rw-r--r-- | Master/texmf-dist/tex/context/base/attr-lay.lua | 102 |
1 files changed, 72 insertions, 30 deletions
diff --git a/Master/texmf-dist/tex/context/base/attr-lay.lua b/Master/texmf-dist/tex/context/base/attr-lay.lua index bcdc541f7b6..4bcc70b0ca1 100644 --- a/Master/texmf-dist/tex/context/base/attr-lay.lua +++ b/Master/texmf-dist/tex/context/base/attr-lay.lua @@ -10,12 +10,18 @@ if not modules then modules = { } end modules ['attr-lay'] = { -- but when we need it stacked layers might show up too; the next function based -- approach can be replaced by static (metatable driven) resolvers +-- maybe use backends.registrations here too + local type = type -local format = string.format local insert, remove = table.insert, table.remove +local attributes, nodes, utilities, logs, backends = attributes, nodes, utilities, logs, backends +local commands, context, interfaces = commands, context, interfaces +local tex = tex + local allocate = utilities.storage.allocate local setmetatableindex = table.setmetatableindex +local formatters = string.formatters local report_viewerlayers = logs.reporter("viewerlayers") @@ -26,8 +32,6 @@ local report_viewerlayers = logs.reporter("viewerlayers") -- nb. too many "0 g"s -- nb: more local tables -local attributes, nodes = attributes, nodes - attributes.viewerlayers = attributes.viewerlayers or { } local viewerlayers = attributes.viewerlayers @@ -57,22 +61,42 @@ local texgetattribute = tex.getattribute local texsettokenlist = tex.settoks local unsetvalue = attributes.unsetvalue -storage.register("attributes/viewerlayers/registered", viewerlayers.registered, "attributes.viewerlayers.registered") -storage.register("attributes/viewerlayers/values", viewerlayers.values, "attributes.viewerlayers.values") -storage.register("attributes/viewerlayers/scopes", viewerlayers.scopes, "attributes.viewerlayers.scopes") +local nodepool = nodes.pool + +local data = viewerlayers.data +local values = viewerlayers.values +local listwise = viewerlayers.listwise +local registered = viewerlayers.registered +local scopes = viewerlayers.scopes + +local f_stamp = formatters["%s"] -local data = viewerlayers.data -local values = viewerlayers.values -local listwise = viewerlayers.listwise -local registered = viewerlayers.registered -local scopes = viewerlayers.scopes -local template = "%s" +storage.register("attributes/viewerlayers/registered", registered, "attributes.viewerlayers.registered") +storage.register("attributes/viewerlayers/values", values, "attributes.viewerlayers.values") +storage.register("attributes/viewerlayers/scopes", scopes, "attributes.viewerlayers.scopes") + +local layerstacker = utilities.stacker.new("layers") -- experiment + +layerstacker.mode = "stack" +layerstacker.unset = attributes.unsetvalue + +viewerlayers.resolve_begin = layerstacker.resolve_begin +viewerlayers.resolve_step = layerstacker.resolve_step +viewerlayers.resolve_end = layerstacker.resolve_end + +function commands.cleanuplayers() + layerstacker.clean() + -- todo +end -- stacked +local function startlayer(...) startlayer = nodeinjections.startlayer return startlayer(...) end +local function stoplayer (...) stoplayer = nodeinjections.stoplayer return stoplayer (...) end + local function extender(viewerlayers,key) if viewerlayers.supported and key == "none" then - local d = nodeinjections.stoplayer() + local d = stoplayer() viewerlayers.none = d return d end @@ -82,17 +106,23 @@ local function reviver(data,n) if viewerlayers.supported then local v = values[n] if v then - local d = nodeinjections.startlayer(v) + local d = startlayer(v) data[n] = d return d else - report_viewerlayers("error, unknown reference '%s'",tostring(n)) + report_viewerlayers("error: unknown reference %a",tostring(n)) end end end -setmetatableindex(viewerlayers, extender) -setmetatableindex(viewerlayers.data, reviver) +setmetatableindex(viewerlayers,extender) +setmetatableindex(viewerlayers.data,reviver) + +-- !!!! TEST CODE !!!! + +layerstacker.start = function(...) local f = nodeinjections.startstackedlayer layerstacker.start = f return f(...) end +layerstacker.stop = function(...) local f = nodeinjections.stopstackedlayer layerstacker.stop = f return f(...) end +layerstacker.change = function(...) local f = nodeinjections.changestackedlayer layerstacker.change = f return f(...) end local function initializer(...) return states.initialize(...) @@ -103,7 +133,8 @@ attributes.viewerlayers.handler = nodes.installattributehandler { namespace = viewerlayers, initializer = initializer, finalizer = states.finalize, - processor = states.stacked, + -- processor = states.stacked, + processor = states.stacker, } local stack, enabled, global = { }, false, false @@ -132,7 +163,7 @@ local function register(name,lw) -- if not inimode redefine data[n] in first cal if not enabled then viewerlayers.enable(true) end - local stamp = format(template,name) + local stamp = f_stamp(name) local n = registered[stamp] if not n then n = #values + 1 @@ -149,12 +180,16 @@ function viewerlayers.setfeatures(hasorder) viewerlayers.hasorder = hasorder end +local usestacker = true -- new, experimental + function viewerlayers.start(name) --- if not enabled then --- viewerlayers.enable(true) --- end - insert(stack,texgetattribute(a_viewerlayer)) - local a = register(name) or unsetvalue + local a + if usestacker then + a = layerstacker.push(register(name) or unsetvalue) + else + insert(stack,texgetattribute(a_viewerlayer)) + a = register(name) or unsetvalue + end if global or scopes[name] == v_global then scopes[a] = v_global -- messy but we don't know the attributes yet texsetattribute("global",a_viewerlayer,a) @@ -165,14 +200,21 @@ function viewerlayers.start(name) end function viewerlayers.stop() - local a = remove(stack) - if a >= 0 then + local a + if usestacker then + a = layerstacker.pop() + else + a = remove(stack) + end + if not a then + -- error + elseif a >= 0 then if global or scopes[a] == v_global then texsetattribute("global",a_viewerlayer,a) else texsetattribute(a_viewerlayer,a) end - texsettokenlist("currentviewerlayertoks",values[a]) + texsettokenlist("currentviewerlayertoks",values[a] or "") else if global or scopes[a] == v_global then texsetattribute("global",a_viewerlayer,unsetvalue) @@ -197,9 +239,9 @@ function viewerlayers.define(settings) end end -commands.defineviewerlayer = viewerlayers.define -commands.startviewerlayer = viewerlayers.start -commands.stopviewerlayer = viewerlayers.stop +commands.defineviewerlayer = viewerlayers.define +commands.startviewerlayer = viewerlayers.start +commands.stopviewerlayer = viewerlayers.stop function commands.definedviewerlayer(settings) viewerlayers.define(settings) |