diff options
Diffstat (limited to 'tex/context/base/grph-swf.lua')
| -rw-r--r-- | tex/context/base/grph-swf.lua | 188 |
1 files changed, 94 insertions, 94 deletions
diff --git a/tex/context/base/grph-swf.lua b/tex/context/base/grph-swf.lua index 8c28b76af..58136f7fc 100644 --- a/tex/context/base/grph-swf.lua +++ b/tex/context/base/grph-swf.lua @@ -1,94 +1,94 @@ -if not modules then modules = { } end modules ['grph-swf'] = { - version = 1.001, - comment = "companion to grph-inc.mkiv", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - --- maybe: backends.codeinjections.insertswf - -local sub, format, match, byte = string.sub, string.format, string.match, string.byte -local concat = table.concat -local floor = math.floor -local tonumber = tonumber - -local readstring = io.readstring -local readnumber = io.readnumber -local tobitstring = number.tobitstring -local todimen = number.todimen -local nodeinjections = backends.nodeinjections -local figures = figures -local context = context - -local function getheader(name) - local f = io.open(name,"rb") - if not f then - return - end - local signature = readstring(f,3) -- F=uncompressed, C=compressed (zlib) - local version = readnumber(f,1) - local filelength = readnumber(f,-4) - local compressed = sub(signature,1,1) == "C" - local buffer - if compressed then - buffer = zlib.decompress(f:read('*a')) - else - buffer = f:read(20) -- ('*a') - end - f:close() - buffer = { match(buffer,"(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)") } - for i=1,9 do - buffer[i] = tobitstring(byte(buffer[i])) - end - local framebits = concat(buffer,"",1,9) - local n = tonumber(sub(framebits,1,5),2) - local frame = { } -- xmin xmax ymin ymax - local xmin = tonumber(sub(framebits,6, 5 + n),2) - local xmax = tonumber(sub(framebits,6 + 1*n,5 + 2*n),2) - local ymin = tonumber(sub(framebits,6 + 2*n,5 + 3*n),2) - local ymax = tonumber(sub(framebits,6 + 3*n,5 + 4*n),2) - return { - filename = name, - version = version, - filelength = filelength, - framerate = tonumber(byte(buffer[10]) * 256 + byte(buffer[11])), - framecount = tonumber(byte(buffer[12]) * 256 + byte(buffer[13])), - -- framebits = framebits, - compressed = compressed, - width = floor((xmax - xmin) / 20), - height = floor((ymax - ymin) / 20), - rectangle = { - xmin = xmin, - xmax = xmax, - ymin = ymin, - ymax = ymax, - } - } -end - -function figures.checkers.swf(data) - local dr, du, ds = data.request, data.used, data.status - local foundname = du.fullname - local header = getheader(foundname) - local width, height = figures.applyratio(dr.width,dr.height,header.width,header.height) - dr.width, dr.height = width, height - du.width, du.height, du.foundname = width, height, foundname - context.startfoundexternalfigure(todimen(width),todimen(height)) - nodeinjections.insertswf { - foundname = foundname, - width = width, - height = height, - -- factor = number.dimenfactors.bp, - display = dr.display, - controls = dr.controls, - -- label = dr.label, - resources = dr.resources, - } - context.stopfoundexternalfigure() - return data -end - -figures.includers.swf = figures.includers.nongeneric - -figures.registersuffix("swf","swf") +if not modules then modules = { } end modules ['grph-swf'] = {
+ version = 1.001,
+ comment = "companion to grph-inc.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+-- maybe: backends.codeinjections.insertswf
+
+local sub, format, match, byte = string.sub, string.format, string.match, string.byte
+local concat = table.concat
+local floor = math.floor
+local tonumber = tonumber
+
+local readstring = io.readstring
+local readnumber = io.readnumber
+local tobitstring = number.tobitstring
+local todimen = number.todimen
+local nodeinjections = backends.nodeinjections
+local figures = figures
+local context = context
+
+local function getheader(name)
+ local f = io.open(name,"rb")
+ if not f then
+ return
+ end
+ local signature = readstring(f,3) -- F=uncompressed, C=compressed (zlib)
+ local version = readnumber(f,1)
+ local filelength = readnumber(f,-4)
+ local compressed = sub(signature,1,1) == "C"
+ local buffer
+ if compressed then
+ buffer = zlib.decompress(f:read('*a'))
+ else
+ buffer = f:read(20) -- ('*a')
+ end
+ f:close()
+ buffer = { match(buffer,"(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)") }
+ for i=1,9 do
+ buffer[i] = tobitstring(byte(buffer[i]))
+ end
+ local framebits = concat(buffer,"",1,9)
+ local n = tonumber(sub(framebits,1,5),2)
+ local frame = { } -- xmin xmax ymin ymax
+ local xmin = tonumber(sub(framebits,6, 5 + n),2)
+ local xmax = tonumber(sub(framebits,6 + 1*n,5 + 2*n),2)
+ local ymin = tonumber(sub(framebits,6 + 2*n,5 + 3*n),2)
+ local ymax = tonumber(sub(framebits,6 + 3*n,5 + 4*n),2)
+ return {
+ filename = name,
+ version = version,
+ filelength = filelength,
+ framerate = tonumber(byte(buffer[10]) * 256 + byte(buffer[11])),
+ framecount = tonumber(byte(buffer[12]) * 256 + byte(buffer[13])),
+ -- framebits = framebits,
+ compressed = compressed,
+ width = floor((xmax - xmin) / 20),
+ height = floor((ymax - ymin) / 20),
+ rectangle = {
+ xmin = xmin,
+ xmax = xmax,
+ ymin = ymin,
+ ymax = ymax,
+ }
+ }
+end
+
+function figures.checkers.swf(data)
+ local dr, du, ds = data.request, data.used, data.status
+ local foundname = du.fullname
+ local header = getheader(foundname)
+ local width, height = figures.applyratio(dr.width,dr.height,header.width,header.height)
+ dr.width, dr.height = width, height
+ du.width, du.height, du.foundname = width, height, foundname
+ context.startfoundexternalfigure(todimen(width),todimen(height))
+ nodeinjections.insertswf {
+ foundname = foundname,
+ width = width,
+ height = height,
+ -- factor = number.dimenfactors.bp,
+ display = dr.display,
+ controls = dr.controls,
+ -- label = dr.label,
+ resources = dr.resources,
+ }
+ context.stopfoundexternalfigure()
+ return data
+end
+
+figures.includers.swf = figures.includers.nongeneric
+
+figures.registersuffix("swf","swf")
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