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-- mod-version:1 -- lite-xl 2.00
local subprocess = require "process"
local core = require "core"
local style = require "core.style"
local config = require "core.config"
--[[
Example config (put it in user module):
```
local fc = require "plugins.fontconfig"
fc(
{ name = "sans", size = 13 * SCALE }, -- UI font
{ name = "monospace", size = 13 * SCALE } -- code font
)
```
]]
local function resolve_font(spec)
local scan_rate = 1 / config.fps
local proc = subprocess.start({ "fc-match", "-s", "-f", "%{file}\n", spec }, {
stdin = subprocess.REDIRECT_DISCARD,
stdout = subprocess.REDIRECT_PIPE,
stderr = subprocess.REDIRECT_STDOUT
})
local prev, lines = {}, {}
while proc:running() do
coroutine.yield(scan_rate)
local buf = proc:read_stdout()
local p, _, n = string.match(buf, "(.+)\n(.+)")
if p then
prev[#prev + 1] = p
lines[#lines + 1] = table.concat(prev, "")
prev = { n }
else
prev[#prev + 1] = buf
end
end
table.insert(lines, table.concat(prev, ""))
if proc:returncode() ~= 0 or #lines < 1 then
error(string.format("Cannot find a font matching the given specs: %q", spec), 0)
end
-- maybe in the future we can detect and do glyph substitution here...
return lines[1]
end
local function load_system_fonts(font, code_font)
core.add_thread(function()
local font_file = resolve_font(font.name)
local code_font_file = resolve_font(code_font.name)
style.font = renderer.font.load(font_file, font.size, font)
style.code_font = renderer.font.load(code_font_file, code_font.size, code_font)
end)
end
return load_system_fonts
|
