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Diffstat (limited to 'tex/context/base/tabl-xtb.lua')
| -rw-r--r-- | tex/context/base/tabl-xtb.lua | 606 |
1 files changed, 606 insertions, 0 deletions
diff --git a/tex/context/base/tabl-xtb.lua b/tex/context/base/tabl-xtb.lua new file mode 100644 index 000000000..c27371254 --- /dev/null +++ b/tex/context/base/tabl-xtb.lua @@ -0,0 +1,606 @@ +if not modules then modules = { } end modules ['tabl-xtb'] = { + version = 1.001, + comment = "companion to tabl-xtb.mkvi", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local texdimen = tex.dimen +local texcount = tex.count +local texbox = tex.box +local texsetcount = tex.setcount +local texsetdimen = tex.setdimen + +local format = string.format + +local context = context +local context_beginvbox = context.beginvbox +local context_endvbox = context.endvbox +local context_blank = context.blank +local context_nointerlineskip = context.nointerlineskip + +local variables = interfaces.variables + +local setmetatableindex = table.setmetatableindex +local copy_node_list = node.copy_list +local hpack_node_list = node.hpack +local vpack_node_list = node.vpack +local slide_node_list = node.slide +local flush_node_list = node.flush_list + +local new_glue = nodes.pool.glue +local new_kern = nodes.pool.kern + +local v_stretch = variables.stretch +local v_normal = variables.normal +local v_width = variables.width +local v_repeat = variables["repeat"] + +xtables = { } + +local head_mode = 1 +local foot_mode = 2 +local more_mode = 3 +local body_mode = 4 + +local stack, data = { }, nil + +function xtables.create(settings) + table.insert(stack,data) + local rows = { } + local widths = { } + local heights = { } + local depths = { } + local spans = { } + local distances = { } + local modes = { } + data = { + rows = rows, + widths = widths, + heights = heights, + depths = depths, + spans = spans, + distances = distances, + modes = modes, + nofrows = 0, + nofcolumns = 0, + currentrow = 0, + currentcolumn = 0, + settings = settings or { }, + } + local function add_zero(t,k) + t[k] = 0 + return 0 + end + local function add_cell(row,c) + local cell = { + nx = 0, + ny = 0, + list = false, + } + row[c] = cell + if c > data.nofcolumns then + data.nofcolumns = c + end + return cell + end + local function add_row(rows,r) + local row = { } + setmetatableindex(row,add_cell) + rows[r] = row + if r > data.nofrows then + data.nofrows = r + end + return row + end + setmetatableindex(rows,add_row) + setmetatableindex(widths,add_zero) + setmetatableindex(heights,add_zero) + setmetatableindex(depths,add_zero) + setmetatableindex(distances,add_zero) + setmetatableindex(modes,add_zero) + -- + settings.columndistance = tonumber(settings.columndistance) or 0 + settings.rowdistance = tonumber(settings.rowdistance) or 0 + settings.leftmargindistance = tonumber(settings.leftmargindistance) or 0 + settings.rightmargindistance = tonumber(settings.rightmargindistance) or 0 + settings.options = utilities.parsers.settings_to_hash(settings.option) + settings.textwidth = tonumber(settings.textwidth) or tex.hsize + -- if #stack > 0 then + -- settings.textwidth = tex.hsize + -- end +end + +function xtables.initialize_one() + local r = data.currentrow + local c = data.currentcolumn + 1 + local drc = data.rows[r][c] + drc.nx = texcount.x_table_nx + drc.ny = texcount.x_table_ny + local distances, distance = data.distances, texdimen.x_table_distance + if distance > distances[c] then + distances[c] = distance + end + data.currentcolumn = c +end + +function xtables.set_one() + local r = data.currentrow + local c = data.currentcolumn + local rows = data.rows + local row = rows[r] + while row[c].span do -- can also be previous row ones + c = c + 1 + end + local tb = texbox.x_table_box + local drc = row[c] + -- + drc.list = true -- we don't need to keep the content around as we're in trial mode (no: copy_node_list(tb)) + -- + local widths, width = data.widths, tb.width + if width > widths[c] then + widths[c] = width + end + local heights, height = data.heights, tb.height + if height > heights[r] then + heights[r] = height + end + local depths, depth = data.depths, tb.depth + if depth > depths[r] then + depths[r] = depth + end + -- + local nx, ny = drc.nx, drc.ny + if nx > 1 or ny > 1 then + local spans = data.spans + local self = true + for y=1,ny do + for x=1,nx do + if self then + self = false + else + local ry = r + y - 1 + local cx = c + x - 1 + if y > 1 then + spans[ry] = true + end + rows[ry][cx].span = true + end + end + end + c = c + nx - 1 + end + if c > data.nofcolumns then + data.nofcolumns = c + end + data.currentcolumn = c +end + +function xtables.initialize_two() + local r = data.currentrow + local c = data.currentcolumn + 1 + local rows = data.rows + local row = rows[r] + while row[c].span do -- can also be previous row ones + c = c + 1 + end + data.currentcolumn = c + local widths = data.widths + local heights = data.heights + local depths = data.depths + local w = widths[c] + local h = heights[r] + local d = depths[r] + local drc = row[c] + for x=1,drc.nx-1 do + w = w + widths[c+x] + end + for y=1,drc.ny-1 do + h = h + heights[c+y] + d = d + depths[c+y] + end + texdimen.x_table_width = w + texdimen.x_table_height = h + d + texdimen.x_table_depth = 0 +end + +function xtables.set_two() + local r = data.currentrow + local c = data.currentcolumn + local rows = data.rows + local row = rows[r] + while row[c].span do -- can also be previous row ones + c = c + 1 + end + local drc = row[c] + -- this will change as soon as in luatex we can reset a box list without freeing + drc.list = copy_node_list(texbox.x_table_box) + c = c + drc.nx - 1 + data.currentcolumn = c +end + +function xtables.reflow() + local nofrows = data.nofrows + local nofcolumns = data.nofcolumns + local rows = data.rows + for r=1,nofrows do + local row = rows[r] + for c=1,nofcolumns do + local drc = row[c] + if drc.list then + --- flush_node_list(drc.list) + drc.list = false + end + end + end + -- spread + local settings = data.settings + local options = settings.options + if options[v_stretch] then + local widths = data.widths + local distances = data.distances + local width = 0 + local distance = 0 + for c=1,nofcolumns do + width = width + widths[c] + if c < nofcolumns then + distance = distance + distances[c] + end + end + local delta = settings.textwidth - width - distance - (nofcolumns-1) * settings.columndistance + - settings.leftmargindistance - settings.rightmargindistance + if delta > 0 then + if options[v_width] then + for c=1,nofcolumns do + widths[c] = widths[c] + delta * widths[c] / width + end + else + local plus = delta / nofcolumns + for c=1,nofcolumns do + widths[c] = widths[c] + plus + end + end + end + end + -- + data.currentrow = 0 + data.currentcolumn = 0 +end + +function xtables.construct() + local rows = data.rows + local heights = data.heights + local depths = data.depths + local widths = data.widths + local spans = data.spans + local distances = data.distances + local modes = data.modes + local settings = data.settings + local nofcolumns = data.nofcolumns + local nofrows = data.nofrows + local columndistance = settings.columndistance + local rowdistance = settings.rowdistance + local leftmargindistance = settings.leftmargindistance + local rightmargindistance = settings.rightmargindistance + -- ranges can be mixes so we collect + local ranges = { + [head_mode] = { }, + [foot_mode] = { }, + [more_mode] = { }, + [body_mode] = { }, + } + for r=1,nofrows do + local m = modes[r] + if m == 0 then + m = body_mode + end + local range = ranges[m] + range[#range+1] = r + end + -- todo: hook in the splitter ... the splitter can ask for a chunk of + -- a certain size ... no longer a split memory issue then and header + -- footer then has to happen here too .. target height + local function packaged_column(r) + local row = rows[r] + local start = nil + local stop = nil + if leftmargindistance > 0 then + start = new_kern(leftmargindistance) + stop = start + end + for c=1,nofcolumns do + local drc = row[c] + local list = drc.list + if list then + list.shift = list.height + list.depth + list = hpack_node_list(list) -- is somehow needed + list.width = 0 + list.height = 0 + list.depth = 0 + if start then + stop.next = list + list.prev = stop + else + start = list + end + stop = list -- one node anyway, so not needed: slide_node_list(list) + end + local step = widths[c] + if c < nofcolumns then + step = step + columndistance + distances[c] + end + local kern = new_kern(step) + stop.prev = kern + stop.next = kern + stop = kern + end + if start then + if rightmargindistance > 0 then + local kern = new_kern(rightmargindistance) + stop.next = kern + kern.prev = stop + -- stop = kern + end + return start, heights[r] + depths[r] + end + end + local function collect_range(range) + local result = { } + local nofrange = #range + for i=1,#range do + local r = range[i] + local row = rows[r] + local list, size = packaged_column(r) + if list then + result[#result+1] = { + hpack_node_list(list), + size, + i < nofrange and rowdistance > 0 and rowdistance or false, -- might move + } + end + end + return result + end + local body = collect_range(ranges[body_mode]) + data.results = { + [head_mode] = collect_range(ranges[head_mode]), + [foot_mode] = collect_range(ranges[foot_mode]), + [more_mode] = collect_range(ranges[more_mode]), + [body_mode] = body, + } + if #body == 0 then + texsetcount("global","x_table_state",0) + texsetdimen("global","x_table_final_width",0) + else + texsetcount("global","x_table_state",1) + texsetdimen("global","x_table_final_width",body[1][1].width) + end +end + +local function inject(row,copy,package) + local list = row[1] + if copy then + row[1] = copy_node_list(list) + end + if package then + context_beginvbox() + context(list) + context(new_kern(row[2])) + context_endvbox() + context_nointerlineskip() -- figure out a better way + if row[3] then + context_blank(row[3] .. "sp") + else + context(new_glue(0)) + end + else + context(list) + context(new_kern(row[2])) + if row[3] then + context(new_glue(row[3])) + end + end +end + +local function total(row,distance) + local n = #row > 0 and rowdistance or 0 + for i=1,#row do + local ri = row[i] + n = n + ri[2] + (ri[3] or 0) + end + return n +end + +-- local function append(list,what) +-- for i=1,#what do +-- local l = what[i] +-- list[#list+1] = l[1] +-- local k = l[2] + (l[3] or 0) +-- if k ~= 0 then +-- list[#list+1] = new_kern(k) +-- end +-- end +-- end + +function xtables.flush(directives) -- todo split by size / no inbetween then .. glue list kern blank + local vsize = directives.vsize + local method = directives.method or v_normal + local settings = data.settings + local results = data.results + local rowdistance = settings.rowdistance + local head = results[head_mode] + local foot = results[foot_mode] + local more = results[more_mode] + local body = results[body_mode] + local repeatheader = settings.header == v_repeat + local repeatfooter = settings.footer == v_repeat + if vsize and vsize > 0 then + context_beginvbox() + local bodystart = data.bodystart or 1 + local bodystop = data.bodystop or #body + if bodystart <= bodystop then + local bodysize = vsize + local footsize = total(foot,rowdistance) + local headsize = total(head,rowdistance) + local moresize = total(more,rowdistance) + local firstsize = body[bodystart][2] + if bodystart == 1 then -- first chunk gets head + bodysize = bodysize - headsize - footsize + if headsize > 0 and bodysize >= firstsize then + for i=1,#head do + inject(head[i],repeatheader) + end + if rowdistance > 0 then + context(new_glue(rowdistance)) + end + if not repeatheader then + results[head_mode] = { } + end + end + elseif moresize > 0 then -- following chunk gets next + bodysize = bodysize - footsize - moresize + if bodysize >= firstsize then + for i=1,#more do + inject(more[i],true) + end + if rowdistance > 0 then + context(new_glue(rowdistance)) + end + end + elseif headsize > 0 and repeatheader then -- following chunk gets head + bodysize = bodysize - footsize - headsize + if bodysize >= firstsize then + for i=1,#head do + inject(head[i],true) + end + if rowdistance > 0 then + context(new_glue(rowdistance)) + end + end + else -- following chunk gets nothing + bodysize = bodysize - footsize + end + if bodysize >= firstsize then + for i=bodystart,bodystop do -- room for improvement + local bi = body[i] + local bs = bodysize - bi[2] - (bi[3] or 0) + if bs > 0 then + inject(bi) + bodysize = bs + bodystart = i + 1 + body[i] = nil + else + break + end + end + if bodystart > bodystop then + -- all is flushed and footer fits + if footsize > 0 then + if rowdistance > 0 then + context(new_glue(rowdistance)) + end + for i=1,#foot do + inject(foot[i]) + end + results[foot_mode] = { } + end + results[body_mode] = { } + texsetcount("global","x_table_state",0) + else + -- some is left so footer is delayed + -- todo: try to flush a few more lines + if repeatfooter and footsize > 0 then + if rowdistance > 0 then + context(new_glue(rowdistance)) + end + for i=1,#foot do + inject(foot[i],true) + end + else + -- todo: try to fit more of body + end + texsetcount("global","x_table_state",2) + end + else + texsetcount("global","x_table_state",2) -- 1 + end + else + texsetcount("global","x_table_state",0) + end + data.bodystart = bodystart + data.bodystop = bodystop + context_endvbox() + else + if method == variables.split then + -- maybe also a non float mode with header/footer repeat although + -- we can also use a float without caption + for i=1,#head do + inject(head[i],false,true) + end + if #head > 0 and rowdistance > 0 then + context_blank(rowdistance .. "sp") + end + for i=1,#body do + inject(body[i],false,true) + end + if #foot > 0 and rowdistance > 0 then + context_blank(rowdistance .. "sp") + end + for i=1,#foot do + inject(foot[i],false,true) + end + else -- normal + context_beginvbox() + for i=1,#head do + inject(head[i]) + end + if #head > 0 and rowdistance > 0 then + context(new_glue(rowdistance)) + end + for i=1,#body do + inject(body[i]) + end + if #foot > 0 and rowdistance > 0 then + context(new_glue(rowdistance)) + end + for i=1,#foot do + inject(foot[i]) + end + context_endvbox() + end + results[head_mode] = { } + results[body_mode] = { } + results[foot_mode] = { } + texsetcount("global","x_table_state",0) + end +end + +function xtables.cleanup() + for mode, result in next, data.results do + for _, r in next, result do + flush_node_list(r[1]) + end + end + data = table.remove(stack) +end + +function xtables.next_row() + local r = data.currentrow + 1 + data.modes[r] = texcount.x_table_mode + data.currentrow = r + data.currentcolumn = 0 +end + +-- eventually we might only have commands + +commands.x_table_create = xtables.create +commands.x_table_reflow = xtables.reflow +commands.x_table_construct = xtables.construct +commands.x_table_flush = xtables.flush +commands.x_table_cleanup = xtables.cleanup +commands.x_table_next_row = xtables.next_row +commands.x_table_init_one = xtables.initialize_one +commands.x_table_init_two = xtables.initialize_two +commands.x_table_set_one = xtables.set_one +commands.x_table_set_two = xtables.set_two |