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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
moduledata.steps = moduledata.steps or { }
local variables = interfaces.variables
local trace_charts = false
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 = { }
local steps = { }
function commands.step_start_chart(name)
name = name or ""
steps = { }
charts[name] = {
steps = steps,
}
end
function commands.step_stop_chart()
end
function commands.step_make_chart(settings)
local chartsettings = settings.chart
if not chartsettings then
print("no chart")
return
end
local chartname = chartsettings.name
if not chartname then
print("no name given")
return
end
local chart = charts[chartname]
if not chart then
print("no such chart",chartname)
return
end
local steps = chart.steps or { }
--
table.setmetatableindex(settings,defaults)
--
if trace_charts then
inspect(steps)
end
--
local textsettings = settings.text
local cellsettings = settings.cell
local linesettings = settings.line
--
context.startMPcode()
context("if unknown context_cell : input mp-step.mpiv ; fi ;")
context("step_begin_chart ;")
--
if chartsettings.alternative == variables.vertical then
context("chart_vertical := true ;")
end
--
context("text_line_color := \\MPcolor{%s} ;", textsettings.framecolor)
context("text_line_width := %p ;", textsettings.rulethickness)
context("text_fill_color := \\MPcolor{%s} ;", textsettings.backgroundcolor)
context("text_offset := %p ;", textsettings.offset)
context("text_distance_set := %p ;", textsettings.distance)
--
context("cell_line_color := \\MPcolor{%s} ;", cellsettings.framecolor)
context("cell_line_width := %p ;", cellsettings.rulethickness)
context("cell_fill_color := \\MPcolor{%s} ;", cellsettings.backgroundcolor)
context("cell_offset := %p ;", cellsettings.offset)
context("cell_distance_x := %p ;", cellsettings.dx)
context("cell_distance_y := %p ;", cellsettings.dy)
--
context("line_line_color := \\MPcolor{%s} ;", linesettings.color)
context("line_line_width := %p ;", linesettings.rulethickness)
context("line_distance := %p ;", linesettings.distance)
context("line_offset := %p ;", linesettings.offset)
--
for i=1,#steps do
local step = steps[i]
context("step_begin_cell ;")
if step.cell_top ~= "" then
context('step_cell_top("%s") ;',string.strip(step.cell_top))
end
if step.cell_bot ~= "" then
context('step_cell_bot("%s") ;',string.strip(step.cell_bot))
end
if step.text_top ~= "" then
context('step_text_top("%s") ;',string.strip(step.text_top))
end
if step.text_mid ~= "" then
context('step_text_mid("%s") ;',string.strip(step.text_mid))
end
if step.text_bot ~= "" then
context('step_text_bot("%s") ;',string.strip(step.text_bot))
end
context("step_end_cell ;")
end
--
context("step_end_chart ;")
context.stopMPcode()
end
function commands.step_cells(top,bot)
steps[#steps+1] = {
cell_top = top or "",
cell_bot = bot or "",
text_top = "",
text_mid = "",
text_bot = "",
}
end
function commands.step_texts(top,bot)
if #steps > 0 then
steps[#steps].text_top = top or ""
steps[#steps].text_bot = bot or ""
end
end
function commands.step_cell(top)
steps[#steps+1] = {
cell_top = top or "",
cell_bot = "",
text_top = "",
text_mid = "",
text_bot = "",
}
end
function commands.step_text(top)
if #steps > 0 then
steps[#steps].text_top = top or ""
end
end
function commands.step_textset(left,middle,right)
if #steps > 0 then
steps[#steps].text_top = left or ""
steps[#steps].text_mid = middle or ""
steps[#steps].text_bot = right or ""
end
end
function commands.step_start_cell()
steps[#steps+1] = {
cell_top = "",
cell_bot = "",
text_top = "",
text_mid = "",
text_bot = "",
}
end
function commands.step_stop_cell()
end
function commands.step_text_top(str)
if #steps > 0 then
steps[#steps].text_top = str or ""
end
end
function commands.step_text_mid(str)
if #steps > 0 then
steps[#steps].text_mid = str or ""
end
end
function commands.step_text_bot(str)
if #steps > 0 then
steps[#steps].text_bot = str or ""
end
end
function commands.step_cell_top(str)
if #steps > 0 then
steps[#steps].cell_top = str or ""
end
end
function commands.step_cell_bot(str)
if #steps > 0 then
steps[#steps].cell_bot = str or ""
end
end
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