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|
if not modules then modules = { } end modules ['x-flow'] = {
version = 1.001,
comment = "companion to m-flow.mkvi",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- when we can resolve mpcolor at the lua end we will use metapost.graphic(....) directly
local tonumber = tonumber
moduledata.steps = moduledata.steps or { }
local context = context
local variables = interfaces.variables
local formatters = string.formatters
----- mpcolor = attributes.colors.mpnamedcolor
local concat = table.concat
local report = logs.reporter("stepcharts")
local trace = false
trackers.register("stepcharts",function(v) trace = v end)
local defaults = {
chart = {
dx = 10*65436,
dy = 10*65436,
},
cell = {
alternative = 1,
offset = 2*65436,
rulethickness = 65436,
framecolor = "blue",
backgroundcolor = "gray",
},
text = {
alternative = 1,
offset = 2*65436,
distance = 4*65436,
rulethickness = 65436,
framecolor = "red",
backgroundcolor = "gray",
},
line = {
alternative = 1,
rulethickness = 65436,
height = 30*65436,
distance = 10*65436,
offset = 5*65436,
color = "green",
},
}
-- todo : name (no name then direct)
-- maybe: includes
-- maybe: flush ranges
local charts = { } -- not used but we could support nesting
local chart = nil
local steps = { }
local count = 0
local function step_start_chart(name,alternative)
name = name or ""
steps = table.setmetatableindex(function(t,k)
local v = { -- could be metatable
cell_top = false,
cell_bot = false,
text_top = false,
text_mid = false,
text_bot = false,
start_t = k,
start_m = k,
start_b = k,
cell_ali = false,
}
t[k] = v
return v
end)
count = 0
chart = {
steps = steps,
count = count,
alternative = alternative,
}
charts[name] = chart
end
local function step_stop_chart()
chart.count = count
end
local function step_make_chart(settings)
local chartsettings = settings.chart
if not chartsettings then
if trace then
report("no chart")
end
return
end
local chartname = chartsettings.name
if not chartname then
if trace then
report("no name given")
end
return
end
local chart = charts[chartname]
if not chart then
if trace then
report("no such chart: %s",chartname)
end
return
end
local steps = chart.steps or { }
--
table.setmetatableindex(settings,defaults)
--
if trace then
report(table.serialize(steps,"chartdata"))
end
--
local textsettings = settings.text
local cellsettings = settings.cell
local linesettings = settings.line
local start = nil
local stop = nil
local flush = nil
if false then
-- some 2% faster at most, so neglectable as this kind of graphics
-- is hardly used in quantity but it saves mem and tokens in tracing
-- and we lose some aspects, like outer color and so (currently)
local mpcode = false
start = function()
mpcode = { }
end
stop = function()
local code = concat(mpcode,"\n")
-- print(code)
metapost.graphic {
-- instance = "metafun",
instance = "steps",
format = "metafun",
data = code,
-- initializations = "",
-- extensions = "",
-- inclusions = "",
definitions = 'loadmodule "step" ;',
-- figure = "",
method = "double",
}
mpcode = false
end
flush = function(fmt,first,...)
if first then
mpcode[#mpcode+1] = formatters[fmt](first,...)
else
mpcode[#mpcode+1] = fmt
end
end
else
start = function() context.startMPcode("steps") end
stop = context.stopMPcode
flush = context
end
--
start()
flush("step_begin_chart ;")
--
local alternative = chartsettings.alternative
if not alternative or alternative == "" then
alternative = chart.alternative
end
if not alternative or alternative == "" then
alternative = variables.horizontal
end
local alternative = utilities.parsers.settings_to_hash(alternative)
local vertical = alternative[variables.vertical]
local align = alternative[variables.three]
local category = chartsettings.category
--
flush('chart_category := "%s" ;',category)
--
if vertical then
flush("chart_vertical := true ;")
end
if align then
flush("chart_align := true ;")
end
--
flush("text_line_color := %q ;", textsettings.framecolor)
flush("text_line_width := %p ;", textsettings.rulethickness)
flush("text_fill_color := %q ;", textsettings.backgroundcolor)
flush("text_offset := %p ;", textsettings.offset)
flush("text_distance_set := %p ;", textsettings.distance)
--
flush("cell_line_color := %q ;", cellsettings.framecolor)
flush("cell_line_width := %p ;", cellsettings.rulethickness)
flush("cell_fill_color := %q ;", cellsettings.backgroundcolor)
flush("cell_offset := %p ;", cellsettings.offset)
flush("cell_distance_x := %p ;", cellsettings.dx)
flush("cell_distance_y := %p ;", cellsettings.dy)
--
flush("line_line_color := %q ;", linesettings.color)
flush("line_line_width := %p ;", linesettings.rulethickness)
flush("line_distance := %p ;", linesettings.distance)
flush("line_offset := %p ;", linesettings.offset)
flush("line_height := %p ;", linesettings.height)
--
for i=1,chart.count do
local step = steps[i]
flush("step_begin_cell ;")
local ali = step.cell_ali
local top = step.cell_top
local bot = step.cell_bot
if ali then
local text = ali.text
local shape = ali.shape
flush('step_cell_ali(%s,%s,%s,%q,%q,%p,%i) ;',
tonumber(text.left) or 0,
tonumber(text.middle) or 0,
tonumber(text.right) or 0,
shape.framecolor,
shape.backgroundcolor,
shape.rulethickness,
tonumber(shape.alternative) or 24
)
end
if top then
local shape = top.shape
flush('step_cell_top(%s,%q,%q,%p,%i) ;',
tonumber(top.text.top) or 0,
shape.framecolor,
shape.backgroundcolor,
shape.rulethickness,
tonumber(shape.alternative) or 24
)
end
if bot then
local shape = bot.shape
flush('step_cell_bot(%s,%q,%q,%p,%i) ;',
tonumber(bot.text.bot) or 0,
shape.framecolor,
shape.backgroundcolor,
shape.rulethickness,
tonumber(shape.alternative) or 24
)
end
local top = step.text_top
local mid = step.text_mid
local bot = step.text_bot
local s_t = step.start_t
local s_m = step.start_m
local s_b = step.start_b
if top then
local shape = top.shape
local line = top.line
flush('step_text_top(%s,%q,%q,%p,%i,%q,%p,%i) ;',
tonumber(top.text.top) or 0,
shape.framecolor,
shape.backgroundcolor,
shape.rulethickness,
tonumber(shape.alternative) or 24,
line.color,
line.rulethickness,
tonumber(line.alternative) or 1
)
end
if mid then -- used ?
local shape = mid.shape
local line = mid.line
flush('step_text_mid(%s,%q,%q,%p,%i,%q,%p,%i) ;',
tonumber(mid.text.mid) or 0,
shape.framecolor,
shape.backgroundcolor,
shape.rulethickness,
tonumber(shape.alternative) or 24,
line.color,
line.rulethickness,
tonumber(line.alternative) or 1
)
end
if bot then
local shape = bot.shape
local line = bot.line
flush('step_text_bot(%s,%q,%q,%p,%i,%q,%p,%i) ;',
tonumber(bot.text.bot) or 0,
shape.framecolor,
shape.backgroundcolor,
shape.rulethickness,
tonumber(shape.alternative) or 24,
line.color,
line.rulethickness,
tonumber(line.alternative) or 1
)
end
flush('start_t[%i] := %i ;',i,s_t)
flush('start_m[%i] := %i ;',i,s_m)
flush('start_b[%i] := %i ;',i,s_b)
flush("step_end_cell ;")
end
--
flush("step_end_chart ;")
stop()
end
local function step_cells(spec)
count = count + 1
local step = steps[count]
step.cell_top = spec
step.cell_bot = spec
end
local function step_cells_three(spec)
count = count + 1
local step = steps[count]
step.cell_ali = spec
end
local function step_texts(spec)
if count > 0 then
local step = steps[count]
step.text_top = spec
step.text_bot = spec
end
end
local function step_cell(spec)
count = count + 1
steps[count].cell_top = spec
end
local function step_text(spec)
if count > 0 then
local c = count
while true do
local step = steps[c]
if step.text_top then
c = c + 1
step = steps[c]
else
step.text_top = spec
step.start_b = count
break
end
end
end
end
local function step_start_cell()
count = count + 1
local step = steps[count] -- creates
end
local function step_stop_cell()
end
local function step_text_top(spec)
if count > 0 then
steps[count].text_top = spec
end
end
local function step_text_mid(spec)
if count > 0 then
steps[count].text_mid = spec
end
end
local function step_text_bot(spec)
if count > 0 then
steps[count].text_bot = spec
end
end
local function step_cell_top(spec)
if count > 0 then
steps[count].cell_top = spec
end
end
local function step_cell_bot(spec)
if count > 0 then
steps[count].cell_bot = spec
end
end
--
interfaces.implement {
name = "step_start_chart",
arguments = { "string", "string" },
actions = step_start_chart,
}
interfaces.implement {
name = "step_stop_chart",
actions = step_stop_chart,
}
interfaces.implement {
name = "step_make_chart",
actions = step_make_chart,
arguments = {
{
{ "chart", {
{ "category" },
{ "name" },
{ "alternative" },
}
},
{ "cell", {
{ "alternative" },
{ "offset", "dimension" },
{ "rulethickness", "dimension" },
{ "framecolor" },
{ "backgroundcolor" },
{ "dx", "dimension" },
{ "dy", "dimension" },
}
},
{ "text", {
{ "alternative" },
{ "offset", "dimension" },
{ "distance", "dimension" },
{ "rulethickness", "dimension" },
{ "framecolor" },
{ "backgroundcolor" },
}
},
{ "line", {
{ "alternative" },
{ "rulethickness", "dimension" },
{ "height", "dimension" },
{ "distance", "dimension" },
{ "offset", "dimension" },
{ "color" },
}
}
}
}
}
local step_spec = {
{
{ "text", {
{ "top" },
{ "middle" },
{ "mid" },
{ "bot" },
{ "left" },
{ "right" },
}
},
{ "shape", {
{ "rulethickness", "dimension" },
{ "alternative" },
{ "framecolor" },
{ "backgroundcolor" },
}
},
{ "line", {
{ "alternative" },
{ "rulethickness", "dimension" },
{ "color" },
{ "offset", "dimension" },
}
}
}
}
interfaces.implement {
name = "step_cell",
arguments = step_spec,
actions = step_cell,
}
interfaces.implement {
name = "step_text",
arguments = step_spec,
actions = step_text,
}
interfaces.implement {
name = "step_text_top",
arguments = step_spec,
actions = step_text_top,
}
interfaces.implement {
name = "step_text_mid",
arguments = step_spec,
actions = step_text_mid,
}
interfaces.implement {
name = "step_text_bot",
arguments = step_spec,
actions = step_text_bot,
}
interfaces.implement {
name = "step_cell_top",
arguments = step_spec,
actions = step_cell_top,
}
interfaces.implement {
name = "step_cell_bot",
arguments = step_spec,
actions = step_cell_bot,
}
interfaces.implement {
name = "step_start_cell",
actions = step_start_cell,
}
interfaces.implement {
name = "step_stop_cell",
actions = step_stop_cell,
}
interfaces.implement {
name = "step_texts",
arguments = step_spec,
actions = step_texts,
}
interfaces.implement {
name = "step_cells",
arguments = step_spec,
actions = step_cells,
}
interfaces.implement {
name = "step_cells_three",
arguments = step_spec,
actions = step_cells_three,
}
|