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Add beautiful.get_merged_font; fix doc / load_font 

This is meant to get a new font (copy) with adjusted attributes, e.g.

    font_focus = beautiful.get_font_copy(theme.font, "bold")

Closes https://github.com/awesomeWM/awesome/pull/308.
This commit is contained in:
Daniel Hahler 2015-07-13 19:27:38 +02:00
parent 5a9ec82b95
commit 173545bc72
1 changed files with 30 additions and 7 deletions
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37
lib/beautiful/init.lua
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@ -37,13 +37,20 @@ local descs = setmetatable({}, { __mode = 'k' })
local fonts = setmetatable({}, { __mode = 'v' })
local active_font
--- Load a font name
--- Load a font from a string or a font description.
--
-- @param name Font name, which can be a string or a table
-- @see https://developer.gnome.org/pango/stable/pango-Fonts.html#pango-font-description-from-string
-- @tparam string|lgi.Pango.FontDescription name Font, which can be a
-- string or a lgi.Pango.FontDescription.
-- @treturn table A table with `name`, `description` and `height`.
local function load_font(name)
name = name or active_font
if name and type(name) ~= "string" and descs[name] then
name = descs[name]
if name and type(name) ~= "string" then
if descs[name] then
name = descs[name]
else
name = name:to_string()
end
end
if fonts[name] then
return fonts[name]
@ -74,14 +81,30 @@ local function set_font(name)
active_font = load_font(name).name
end
--- Get a font description
--- Get a font description.
--
-- @param name The name of the font
-- @see https://developer.gnome.org/pango/stable/pango-Fonts.html#PangoFontDescription
-- @tparam string|lgi.Pango.FontDescription name The name of the font.
-- @treturn lgi.Pango.FontDescription
function beautiful.get_font(name)
return load_font(name).description
end
--- Get the heigh of a font
--- Get a new font with merged attributes, based on another one.
--
-- @tparam string|Pango.FontDescription name The base font.
-- @tparam string merge Attributes that should be merged, e.g. "bold".
-- @see https://developer.gnome.org/pango/stable/pango-Fonts.html#pango-font-description-from-string
-- @treturn lgi.Pango.FontDescription
function beautiful.get_merged_font(name, merge)
local font = beautiful.get_font(name)
local merge = Pango.FontDescription.from_string(merge)
local merged = font:copy_static()
merged:merge(merge, true)
return beautiful.get_font(merged:to_string())
end
--- Get the height of a font.
--
-- @param name Name of the font
function beautiful.get_font_height(name)