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path: root/src/fontloader/misc/fontloader-font-ocl.lua
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-rw-r--r--src/fontloader/misc/fontloader-font-ocl.lua97
1 files changed, 81 insertions, 16 deletions
diff --git a/src/fontloader/misc/fontloader-font-ocl.lua b/src/fontloader/misc/fontloader-font-ocl.lua
index ed1be95..65a1c63 100644
--- a/src/fontloader/misc/fontloader-font-ocl.lua
+++ b/src/fontloader/misc/fontloader-font-ocl.lua
@@ -9,33 +9,85 @@ if not modules then modules = { } end modules ['font-ocl'] = {
-- todo : user list of colors
local tostring, next, format = tostring, next, string.format
+local round, max = math.round, math.round
local formatters = string.formatters
+local tounicode = fonts.mappings.tounicode
-local otf = fonts.handlers.otf
+local otf = fonts.handlers.otf
-local f_color_start = formatters["pdf:direct: %f %f %f rg"]
-local s_color_stop = "pdf:direct:"
+local f_color = formatters["pdf:direct:%f %f %f rg"]
+local f_gray = formatters["pdf:direct:%f g"]
+local s_black = "pdf:direct:0 g"
if context then
local startactualtext = nil
local stopactualtext = nil
- function otf.getactualtext(n)
+ function otf.getactualtext(s)
if not startactualtext then
- startactualtext = backends.codeinjections.startunicodetoactualtext
- stopactualtext = backends.codeinjections.stopunicodetoactualtext
+ startactualtext = backends.codeinjections.startunicodetoactualtextdirect
+ stopactualtext = backends.codeinjections.stopunicodetoactualtextdirect
end
- return startactualtext(n), stopactualtext()
+ return startactualtext(s), stopactualtext()
end
else
local tounicode = fonts.mappings.tounicode16
- function otf.getactualtext(n)
- return "/Span << /ActualText <feff" .. tounicode(n) .. "> >> BDC", "EMC"
+ function otf.getactualtext(s)
+ return
+ "/Span << /ActualText <feff" .. n .. "> >> BDC",
+ "EMC"
+ end
+
+end
+
+local sharedpalettes = { }
+
+if context then
+
+ local graytorgb = attributes.colors.graytorgb
+ local cmyktorgb = attributes.colors.cmyktorgb
+
+ function otf.registerpalette(name,values)
+ sharedpalettes[name] = values
+ for i=1,#values do
+ local v = values[i]
+ local r, g, b
+ local s = v.s
+ if s then
+ r, g, b = graytorgb(s)
+ else
+ local c, m, y, k = v.c, v.m, v.y, v.k
+ if c or m or y or k then
+ r, g, b = cmyktorgb(c or 0,m or 0,y or 0,k or 0)
+ else
+ r, g, b = v.r, v.g, v.b
+ end
+ end
+ values[i] = {
+ max(r and round(r*255) or 0,255),
+ max(g and round(g*255) or 0,255),
+ max(b and round(b*255) or 0,255)
+ }
+ end
+ end
+
+else -- for generic
+
+ function otf.registerpalette(name,values)
+ sharedpalettes[name] = values
+ for i=1,#values do
+ local v = values[i]
+ values[i] = {
+ max(round((v.r or 0)*255),255),
+ max(round((v.g or 0)*255),255),
+ max(round((v.b or 0)*255),255)
+ }
+ end
end
end
@@ -45,7 +97,7 @@ local function initializecolr(tfmdata,kind,value) -- hm, always value
local palettes = tfmdata.resources.colorpalettes
if palettes then
--
- local palette = palettes[tonumber(value) or 1] or palettes[1] or { }
+ local palette = sharedpalettes[value] or palettes[tonumber(value) or 1] or palettes[1] or { }
local classes = #palette
if classes == 0 then
return
@@ -63,7 +115,12 @@ local function initializecolr(tfmdata,kind,value) -- hm, always value
--
for i=1,classes do
local p = palette[i]
- colorvalues[i] = { "special", f_color_start(p[1]/255,p[2]/255,p[3]/255) }
+ local r, g, b = p[1], p[2], p[3]
+ if r == g and g == b then
+ colorvalues[i] = { "special", f_gray(r/255) }
+ else
+ colorvalues[i] = { "special", f_color(r/255,g/255,b/255) }
+ end
end
--
local getactualtext = otf.getactualtext
@@ -73,22 +130,30 @@ local function initializecolr(tfmdata,kind,value) -- hm, always value
if description then
local colorlist = description.colors
if colorlist then
- local b, e = getactualtext(unicode)
+ local b, e = getactualtext(tounicode(characters[unicode].unicode or 0xFFFD))
local w = character.width or 0
local s = #colorlist
- local n = 1
local t = {
- { "special", "pdf:direct: q " .. b }
+ -- We need to force page first because otherwise the q's get outside
+ -- the font switch and as a consequence the next character has no font
+ -- set (well, it has: the preceding one). As a consequence these fonts
+ -- are somewhat inefficient as each glyph gets the font set. It's a
+ -- side effect of the fact that a font is handled when a character gets
+ -- flushed.
+ { "special", "pdf:page:q" },
+ { "special", "pdf:raw:" .. b }
}
+ local n = #t
for i=1,s do
local entry = colorlist[i]
- n = n + 1 t[n] = colorvalues[entry.class]
+ n = n + 1 t[n] = colorvalues[entry.class] or s_black
n = n + 1 t[n] = { "char", entry.slot }
if s > 1 and i < s and w ~= 0 then
n = n + 1 t[n] = { "right", -w }
end
end
- n = n + 1 t[n] = { "special", "pdf:direct:" .. e .. " Q" }
+ n = n + 1 t[n] = { "special", "pdf:page:" .. e }
+ n = n + 1 t[n] = { "special", "pdf:raw:Q" }
character.commands = t
end
end