mirror of
https://github.com/koreader/koreader
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60ccd7441e
the replacement of debug() was necessary to be able to access the lua library "debug" (for backtraces etc.)
93 lines
2.2 KiB
Lua
93 lines
2.2 KiB
Lua
require "settings" -- for DEBUG()
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Font = {
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fontmap = {
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-- default font for menu contents
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cfont = "droid/DroidSans.ttf",
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-- default font for title
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tfont = "NimbusSanL-BoldItal.cff",
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-- default font for footer
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ffont = "droid/DroidSans.ttf",
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-- default font for reading position info
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rifont = "droid/DroidSans.ttf",
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-- default font for pagination display
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pgfont = "droid/DroidSans.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 = "droid/DroidSans.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 = "droid/DroidSans.ttf",
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},
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fontdir = os.getenv("FONTDIR") or "./fonts",
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-- face table
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faces = {},
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}
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function Font:getFace(font, size)
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if not font then
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-- default to content font
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font = self.cfont
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end
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local face = self.faces[font..size]
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-- build face if not found
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if not face 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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ok, face = pcall(freetype.newFace, realname, size)
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if not ok then
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DEBUG("#! Font "..font.." ("..realname..") not supported: "..face)
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return nil
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end
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self.faces[font..size] = face
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--DEBUG("getFace, found: "..realname.." size:"..size)
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end
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return { size = size, ftface = face, hash = font..size }
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end
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function Font:_readList(target, dir, effective_dir)
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for f in lfs.dir(dir) 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, effective_dir..f.."/")
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else
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local file_type = string.lower(string.match(f, ".+%.([^.]+)") or "")
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if file_type == "ttf" or file_type == "cff" or file_type == "otf" then
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table.insert(target, effective_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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function Font:getFontList()
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fontlist = {}
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self:_readList(fontlist, self.fontdir, "")
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table.sort(fontlist)
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return fontlist
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end
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function Font:update()
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for _k, _v in ipairs(self.faces) do
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_v:done()
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end
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self.faces = {}
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clearGlyphCache()
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end
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