mirror of
https://github.com/koreader/koreader
synced 2024-10-31 21:20:20 +00:00
ecd7b5b413
* Discard dotfiles when looking for fonts
So as not to pickup, among other things:
* macOS resource forks
* *nix hidden files (which may be stale fuse ghosts on Kindle)
* Update Kindle font blacklist
Up to FW 5.9.6
Basically blacklist anything non-LGC, requiring lab126's FT build, or FC tweaks.
One day we'll fix CRe instead, maybe.
232 lines
7.2 KiB
Lua
232 lines
7.2 KiB
Lua
--[[--
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Font module.
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]]
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local Device = require("device")
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local Freetype = require("ffi/freetype")
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local lfs = require("libs/libkoreader-lfs")
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local logger = require("logger")
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local Screen = Device.screen
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local Font = {
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fontmap = {
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-- default font for menu contents
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cfont = "noto/NotoSans-Regular.ttf",
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-- default font for title
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--tfont = "NimbusSanL-BoldItal.cff",
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tfont = "noto/NotoSans-Bold.ttf",
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smalltfont = "noto/NotoSans-Bold.ttf",
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x_smalltfont = "noto/NotoSans-Bold.ttf",
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-- default font for footer
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ffont = "noto/NotoSans-Regular.ttf",
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smallffont = "noto/NotoSans-Regular.ttf",
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largeffont = "noto/NotoSans-Regular.ttf",
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-- default font for reading position info
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rifont = "noto/NotoSans-Regular.ttf",
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-- default font for pagination display
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pgfont = "noto/NotoSans-Regular.ttf",
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-- selectmenu: font for item shortcut
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scfont = "droid/DroidSansMono.ttf",
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-- help page: font for displaying keys
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hpkfont = "droid/DroidSansMono.ttf",
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-- font for displaying help messages
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hfont = "noto/NotoSans-Regular.ttf",
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-- font for displaying input content
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-- we have to use mono here for better distance controlling
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infont = "droid/DroidSansMono.ttf",
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-- font for info messages
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infofont = "noto/NotoSans-Regular.ttf",
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-- small font for info messages
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smallinfofont = "noto/NotoSans-Regular.ttf",
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-- small bold font for info messages
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smallinfofontbold = "noto/NotoSans-Bold.ttf",
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-- extra small font for info messages
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x_smallinfofont = "noto/NotoSans-Regular.ttf",
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-- extra extra small font for info messages
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xx_smallinfofont = "noto/NotoSans-Regular.ttf",
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},
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sizemap = {
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cfont = 24,
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tfont = 26,
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smalltfont = 24,
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x_smalltfont = 22,
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ffont = 20,
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smallffont = 15,
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largeffont = 25,
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pgfont = 20,
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scfont = 20,
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rifont = 16,
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hpkfont = 20,
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hfont = 24,
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infont = 22,
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infofont = 24,
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smallinfofont = 22,
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smallinfofontbold = 22,
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x_smallinfofont = 20,
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xx_smallinfofont = 18,
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},
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fallbacks = {
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[1] = "noto/NotoSans-Regular.ttf",
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[2] = "noto/NotoSansCJKsc-Regular.otf",
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[3] = "freefont/FreeSans.ttf",
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[4] = "freefont/FreeSerif.ttf",
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},
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fontdir = "./fonts",
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-- face table
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faces = {},
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}
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--- Gets font face object.
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-- @string font
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-- @int size optional size
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-- @treturn table @{FontFaceObj}
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function Font:getFace(font, size)
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-- default to content font
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if not font then font = self.cfont end
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if not size then size = self.sizemap[font] end
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-- original size before scaling by screen DPI
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local orig_size = size
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size = Screen:scaleBySize(size)
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local hash = font..size
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local face_obj = self.faces[hash]
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-- build face if not found
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if not face_obj then
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local realname = self.fontmap[font]
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if not realname then
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realname = font
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end
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realname = self.fontdir.."/"..realname
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local ok, face = pcall(Freetype.newFace, realname, size)
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if not ok then
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logger.warn("#! Font ", font, " (", realname, ") not supported: ", face)
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return nil
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end
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--- Freetype font face wrapper object
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-- @table FontFaceObj
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-- @field size size of the font face (after scaled by screen size)
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-- @field orig_size raw size of the font face (before scale)
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-- @field ftface font face object from freetype
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-- @field hash hash key for this font face
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face_obj = {
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size = size,
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orig_size = orig_size,
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ftface = face,
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hash = hash
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}
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self.faces[hash] = face_obj
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end
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return face_obj
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end
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--[[
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These non-LGC Kindle system fonts fail CRe's moronic header check.
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--]]
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local kindle_fonts_blacklist = {
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["DiwanMuna-Bold.ttf"] = true,
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["DiwanMuna-Regular.ttf"] = true,
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["HYGothicBold.ttf"] = true,
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["HYGothicMedium.ttf"] = true,
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["HYMyeongJoBold.ttf"] = true,
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["HYMyeongJoMedium.ttf"] = true,
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["KindleBlackboxBoldItalic.ttf"] = true,
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["KindleBlackboxBold.ttf"] = true,
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["KindleBlackboxItalic.ttf"] = true,
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["KindleBlackboxRegular.ttf"] = true,
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["Kindle_MonospacedSymbol.ttf"] = true,
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["Kindle_Symbol.ttf"] = true,
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["MTChineseSurrogates.ttf"] = true,
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["MYingHeiTBold.ttf"] = true,
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["MYingHeiTMedium.ttf"] = true,
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["NotoNaskhArabicUI-Bold.ttf"] = true,
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["NotoNaskhArabicUI-Regular.ttf"] = true,
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["NotoNaskh-Bold.ttf"] = true,
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["NotoNaskh-Regular.ttf"] = true,
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["NotoSansBengali-Regular.ttf"] = true,
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["NotoSansDevanagari-Regular.ttf"] = true,
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["NotoSansGujarati-Regular.ttf"] = true,
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["NotoSansKannada-Regular.ttf"] = true,
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["NotoSansMalayalam-Regular.ttf"] = true,
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["NotoSansTamil-Regular.ttf"] = true,
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["NotoSansTelugu-Regular.ttf"] = true,
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["SakkalKitab-Bold.ttf"] = true,
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["SakkalKitab-Regular.ttf"] = true,
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["SongTBold.ttf"] = true,
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["SongTMedium.ttf"] = true,
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["STHeitiBold.ttf"] = true,
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["STHeitiMedium.ttf"] = true,
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["STSongBold.ttf"] = true,
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["STSongMedium.ttf"] = true,
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["TBGothicBold_213.ttf"] = true,
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["TBGothicMed_213.ttf"] = true,
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["TBMinchoBold_213.ttf"] = true,
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["TBMinchoMedium_213.ttf"] = true,
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["STKaiMedium.ttf"] = true,
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["Caecilia_LT_67_Cond_Medium.ttf"] = true,
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["Caecilia_LT_68_Cond_Medium_Italic.ttf"] = true,
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["Caecilia_LT_77_Cond_Bold.ttf"] = true,
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["Caecilia_LT_78_Cond_Bold_Italic.ttf"] = true,
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["Helvetica_LT_65_Medium.ttf"] = true,
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["Helvetica_LT_66_Medium_Italic.ttf"] = true,
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["Helvetica_LT_75_Bold.ttf"] = true,
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["Helvetica_LT_76_Bold_Italic.ttf"] = true,
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}
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local function isInFontsBlacklist(f)
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if Device:isKindle() then
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return kindle_fonts_blacklist[f]
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end
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end
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function Font:_readList(target, dir)
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-- lfs.dir non-exsitent directory will give error, weird!
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local ok, iter, dir_obj = pcall(lfs.dir, dir)
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if not ok then return end
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for f in iter, dir_obj do
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if lfs.attributes(dir.."/"..f, "mode") == "directory" and f ~= "." and f ~= ".." then
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self:_readList(target, dir.."/"..f)
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else
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if string.sub(f, 1, 1) ~= "." then
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local file_type = string.lower(string.match(f, ".+%.([^.]+)") or "")
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if file_type == "ttf" or file_type == "ttc"
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or file_type == "cff" or file_type == "otf" then
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if not isInFontsBlacklist(f) then
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table.insert(target, dir.."/"..f)
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end
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end
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end
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end
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end
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end
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function Font:_getExternalFontDir()
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if Device:isAndroid() then
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return ANDROID_FONT_DIR
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else
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return os.getenv("EXT_FONT_DIR")
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end
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end
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function Font:getFontList()
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local fontlist = {}
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self:_readList(fontlist, self.fontdir)
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-- multiple paths should be joined with semicolon
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for dir in string.gmatch(self:_getExternalFontDir() or "", "([^;]+)") do
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self:_readList(fontlist, dir)
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end
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table.sort(fontlist)
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return fontlist
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end
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return Font
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