diff options
Diffstat (limited to 'src/fontloader/misc/fontloader-font-dsp.lua')
| -rw-r--r-- | src/fontloader/misc/fontloader-font-dsp.lua | 144 |
1 files changed, 143 insertions, 1 deletions
diff --git a/src/fontloader/misc/fontloader-font-dsp.lua b/src/fontloader/misc/fontloader-font-dsp.lua index 37ae166..9726c51 100644 --- a/src/fontloader/misc/fontloader-font-dsp.lua +++ b/src/fontloader/misc/fontloader-font-dsp.lua @@ -76,6 +76,7 @@ local readshort = streamreader.readinteger2 -- 16-bit signed integer local readfword = readshort local readstring = streamreader.readstring local readtag = streamreader.readtag +local readbytes = streamreader.readbytes local gsubhandlers = { } local gposhandlers = { } @@ -2191,7 +2192,7 @@ function readers.math(f,fontdata,specification) setposition(f,tableoffset) local version = readulong(f) if version ~= 0x00010000 then - report("table version %a of %a is not supported (yet), maybe font %s is bad",version,what,fontdata.filename) + report("table version %a of %a is not supported (yet), maybe font %s is bad",version,"math",fontdata.filename) return end local constants = readushort(f) @@ -2211,3 +2212,144 @@ function readers.math(f,fontdata,specification) end end end + +function readers.colr(f,fontdata,specification) + if specification.details then + local datatable = fontdata.tables.colr + if datatable then + local tableoffset = datatable.offset + setposition(f,tableoffset) + local version = readushort(f) + if version ~= 0 then + report("table version %a of %a is not supported (yet), maybe font %s is bad",version,"colr",fontdata.filename) + return + end + if not fontdata.tables.cpal then + report("color table %a in font %a has no mandate %a table","colr",fontdata.filename,"cpal") + fontdata.colorpalettes = { } + end + local glyphs = fontdata.glyphs + local nofglyphs = readushort(f) + local baseoffset = readulong(f) + local layeroffset = readulong(f) + local noflayers = readushort(f) + local layerrecords = { } + local maxclass = 0 + -- The special value 0xFFFF is foreground (but we index from 1). It + -- more looks like indices into a palette so 'class' is a better name + -- than 'palette'. + setposition(f,tableoffset + layeroffset) + for i=1,noflayers do + local slot = readushort(f) + local class = readushort(f) + if class < 0xFFFF then + class = class + 1 + if class > maxclass then + maxclass = class + end + end + layerrecords[i] = { + slot = slot, + class = class, + } + end + fontdata.maxcolorclass = maxclass + setposition(f,tableoffset + baseoffset) + for i=0,nofglyphs-1 do + local glyphindex = readushort(f) + local firstlayer = readushort(f) + local noflayers = readushort(f) + local t = { } + for i=1,noflayers do + t[i] = layerrecords[firstlayer+i] + end + glyphs[glyphindex].colors = t + end + end + end +end + +function readers.cpal(f,fontdata,specification) + if specification.details then + local datatable = fontdata.tables.cpal + if datatable then + local tableoffset = datatable.offset + setposition(f,tableoffset) + local version = readushort(f) + if version > 1 then + report("table version %a of %a is not supported (yet), maybe font %s is bad",version,"cpal",fontdata.filename) + return + end + local nofpaletteentries = readushort(f) + local nofpalettes = readushort(f) + local nofcolorrecords = readushort(f) + local firstcoloroffset = readulong(f) + local colorrecords = { } + local palettes = { } + for i=1,nofpalettes do + palettes[i] = readushort(f) + end + if version == 1 then + -- used for guis + local palettettypesoffset = readulong(f) + local palettelabelsoffset = readulong(f) + local paletteentryoffset = readulong(f) + end + setposition(f,tableoffset+firstcoloroffset) + for i=1,nofcolorrecords do + local b, g, r, a = readbytes(f,4) + colorrecords[i] = { + r, g, b, a ~= 255 and a or nil, + } + end + for i=1,nofpalettes do + local p = { } + local o = palettes[i] + for j=1,nofpaletteentries do + p[j] = colorrecords[o+j] + end + palettes[i] = p + end + fontdata.colorpalettes = palettes + end + end +end + +function readers.svg(f,fontdata,specification) + if specification.details then + local datatable = fontdata.tables.svg + if datatable then + local tableoffset = datatable.offset + setposition(f,tableoffset) + local version = readushort(f) + if version ~= 0 then + report("table version %a of %a is not supported (yet), maybe font %s is bad",version,"svg",fontdata.filename) + return + end + local glyphs = fontdata.glyphs + local indexoffset = tableoffset + readulong(f) + local reserved = readulong(f) + setposition(f,indexoffset) + local nofentries = readushort(f) + local entries = { } + for i=1,nofentries do + entries[i] = { + first = readushort(f), + last = readushort(f), + offset = indexoffset + readulong(f), + length = readulong(f), + } + end + for i=1,nofentries do + local entry = entries[i] + setposition(f,entry.offset) + entries[i] = { + first = entry.first, + last = entry.last, + data = readstring(f,entry.length) + } + end + fontdata.svgshapes = entries + end + end +end |