diff options
Diffstat (limited to 'tex/context/base/math-vfu.lua')
| -rw-r--r-- | tex/context/base/math-vfu.lua | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/tex/context/base/math-vfu.lua b/tex/context/base/math-vfu.lua index 31c13cf8c..7a5822d6b 100644 --- a/tex/context/base/math-vfu.lua +++ b/tex/context/base/math-vfu.lua @@ -153,21 +153,43 @@ local function minus(main,characters,id,size,unicode) -- push/pop needed? end end --- pdf:page pdf:direct don't work here +-- fails: pdf:page: pdf:direct: ... some funny displacement -local scale_factor = 0.7 -local scale_down = { "special", format("pdf: %s 0 0 %s 0 0 cm", scale_factor, scale_factor) } -- we need a scale -local scale_up = { "special", format("pdf: %s 0 0 %s 0 0 cm",1/scale_factor,1/scale_factor) } +-- this does not yet work ... { "scale", 2, 0, 0, 3 } .. commented code +-- +-- this does not work ... no interpretation going on here +-- +-- local nodeinjections = backends.nodeinjections +-- { "node", nodeinjections.save() }, +-- { "node", nodeinjections.transform(.7,0,0,.7) }, +-- commands[#commands+1] = { "node", nodeinjections.restore() } + +local done = { } -local function raise(main,characters,id,size,unicode,private) -- this is a real fake mess +local function raise(main,characters,id,size,unicode,private,n) -- this is a real fake mess local raised = characters[private] if raised then - local up = .85 * main.parameters.x_height + if not done[unicode] then + report_virtual("temporary too large U+%05X due to issues in luatex backend",unicode) + done[unicode] = true + end + local up = 0.85 * main.parameters.x_height + local slot = { "slot", id, private } + local commands = { + push, + { "down", - up }, + -- { "scale", .7, 0, 0, .7 }, + slot, + } + for i=2,n do + commands[#commands+1] = slot + end + commands[#commands+1] = pop characters[unicode] = { - width = .7 * raised.width, + width = .7 * n * raised.width, height = .7 * (raised.height + up), depth = .7 * (raised.depth - up), - commands = { push, { "down", -up }, scale_down, { "slot", id, private }, scale_up, pop } + commands = commands, } end end @@ -366,7 +388,9 @@ function vfmath.addmissing(main,id,size) jointhree(main,characters,id,size,0x27FC,0xFE321,0,0x0002D,joinrelfactor,0x02192) -- \mapstochar\relbar\joinrel\rightarrow jointwo (main,characters,id,size,0x2254,0x03A,0,0x03D) -- := (≔) --- raise (main,characters,id,size,0x02032,0xFE325) -- prime + -- raise (main,characters,id,size,0x02032,0xFE325,1) -- prime + -- raise (main,characters,id,size,0x02033,0xFE325,2) -- double prime + -- raise (main,characters,id,size,0x02034,0xFE325,3) -- triple prime -- there are more (needs discussion first): |