9307175333

Committed 30 May 2024 06:08PM UTC coverage: 70.644% (-3.5%) from 74.124%

Build # 9307175333

Build Type

push

github

Committed by

web-flow

Commit Message

Merge b18390e74 into 70ff5c335

Run Details

1910 of 2592 new or added lines in 108 files covered. (73.69%)

901 existing lines in 52 files now uncovered.

12203 of 17274 relevant lines covered (70.64%)

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0.0

/shapers/pango.lua

-- This shaper package is deprecated and should only be used as an
-- example of how to create alternative shaper backends, in comparison
-- with the harfbuzz shaper.
local lgi = require("lgi")
require("string")
local pangolgi = lgi.Pango
local fm = lgi.PangoCairo.FontMap.get_default()
local pango_context = lgi.Pango.FontMap.create_context(fm)

local base = require("shapers.base")

local palcache = {}

local function _shape (text, item)
   local offset = item.offset
   local length = item.length
   local analysis = item.analysis
   local pgs = pangolgi.GlyphString.new()
   pangolgi.shape(string.sub(text, 1 + offset), length, analysis, pgs)
   return pgs
end

local shaper = pl.class(base)
shaper._name = "pango"

-- TODO: refactor so method accepts self
function shaper.getFace (options)
   local pal
   if options.pal then
      return options.pal
   end
   local p = pl.pretty.write(options, "")
   if palcache[p] then
      return palcache[p]
   else
      pal = pangolgi.AttrList.new()
      if options.language then
         pal:insert(pangolgi.Attribute.language_new(pangolgi.Language.from_string(options.language)))
      end
      if options.font then
         pal:insert(pangolgi.Attribute.family_new(options.font))
      end
      if options.weight then
         pal:insert(pangolgi.Attribute.weight_new(tonumber(options.weight)))
      end
      if options.size then
         pal:insert(pangolgi.Attribute.size_new(options.size * 1024 * 0.75))
      end -- I don't know why 0.75
      if options.style then
         pal:insert(
            pangolgi.Attribute.style_new(
               options.style:lower() == "italic" and pangolgi.Style.ITALIC or pangolgi.Style.NORMAL
            )
         )
      end
      if options.variant then
         pal:insert(
            pangolgi.Attribute.variant_new(
               options.variant:lower() == "smallcaps" and pangolgi.Variant.SMALL_CAPS or pangolgi.Variant.NORMAL
            )
         )
      end
   end
   if options.language then
      pango_context:set_language(pangolgi.Language.from_string(options.language))
   end
   palcache[p] = pal
   return pal
end

function shaper:shapeToken (text, options)
   local pal = SILE.font.cache(options, self.getFace)
   local rv = {}
   local items = pangolgi.itemize(pango_context, text, 0, string.len(text), pal, nil)
   local twidth = SILE.types.length()
   for i = 1, #items do
      local item = items[i]
      local pgs = _shape(text, item)
      -- local text = string.sub(text,1+items[i].offset, items[i].length)
      -- local depth, height = 0,0
      local font = items[i].analysis.font
      twidth = twidth + pgs:get_width() / 1024
      for g in pairs(pgs.glyphs) do
         local rect = font:get_glyph_extents(pgs.glyphs[g].glyph)
         table.insert(rv, {
            height = -rect.y / 1024,
            depth = (rect.y + rect.height) / 1024,
            width = rect.width / 1024,
            glyph = pgs.glyphs[g].glyph,
            pgs = pgs,
            font = font,
            -- text = text
         })
      end
   end
   return rv, twidth
end

function shaper.addShapedGlyphToNnodeValue (_, nnodevalue, shapedglyph)
   nnodevalue.pgs = shapedglyph.pgs
   nnodevalue.font = shapedglyph.font
end

return shaper

1	-- This shaper package is deprecated and should only be used as an
2	-- example of how to create alternative shaper backends, in comparison
3	-- with the harfbuzz shaper.
4	local lgi = require("lgi")	×
5	require("string")	×
6	local pangolgi = lgi.Pango	×
7	local fm = lgi.PangoCairo.FontMap.get_default()	×
8	local pango_context = lgi.Pango.FontMap.create_context(fm)	×
9
10	local base = require("shapers.base")	×
11
12	local palcache = {}	×
13
14	local function _shape (text, item)
15	local offset = item.offset	×
16	local length = item.length	×
17	local analysis = item.analysis	×
18	local pgs = pangolgi.GlyphString.new()	×
19	pangolgi.shape(string.sub(text, 1 + offset), length, analysis, pgs)	×
20	return pgs	×
21	end
22
23	local shaper = pl.class(base)	×
24	shaper._name = "pango"	×
25
26	-- TODO: refactor so method accepts self
27	function shaper.getFace (options)	×
28	local pal
29	if options.pal then	×
30	return options.pal	×
31	end
32	local p = pl.pretty.write(options, "")	×
33	if palcache[p] then	×
34	return palcache[p]	×
35	else
36	pal = pangolgi.AttrList.new()	×
37	if options.language then	×
38	pal:insert(pangolgi.Attribute.language_new(pangolgi.Language.from_string(options.language)))	×
39	end
40	if options.font then	×
41	pal:insert(pangolgi.Attribute.family_new(options.font))	×
42	end
43	if options.weight then	×
44	pal:insert(pangolgi.Attribute.weight_new(tonumber(options.weight)))	×
45	end
46	if options.size then	×
47	pal:insert(pangolgi.Attribute.size_new(options.size * 1024 * 0.75))	×
48	end -- I don't know why 0.75
49	if options.style then	×
50	pal:insert(	×
51	pangolgi.Attribute.style_new(	×
52	options.style:lower() == "italic" and pangolgi.Style.ITALIC or pangolgi.Style.NORMAL	×
53	)
54	)
55	end
56	if options.variant then	×
57	pal:insert(	×
58	pangolgi.Attribute.variant_new(	×
59	options.variant:lower() == "smallcaps" and pangolgi.Variant.SMALL_CAPS or pangolgi.Variant.NORMAL	×
60	)
61	)
62	end
63	end
64	if options.language then	×
65	pango_context:set_language(pangolgi.Language.from_string(options.language))	×
66	end
67	palcache[p] = pal	×
68	return pal	×
69	end
70
71	function shaper:shapeToken (text, options)	×
72	local pal = SILE.font.cache(options, self.getFace)	×
73	local rv = {}	×
74	local items = pangolgi.itemize(pango_context, text, 0, string.len(text), pal, nil)	×
NEW 75	local twidth = SILE.types.length()	×
76	for i = 1, #items do	×
77	local item = items[i]	×
78	local pgs = _shape(text, item)	×
79	-- local text = string.sub(text,1+items[i].offset, items[i].length)
80	-- local depth, height = 0,0
81	local font = items[i].analysis.font	×
82	twidth = twidth + pgs:get_width() / 1024	×
83	for g in pairs(pgs.glyphs) do	×
84	local rect = font:get_glyph_extents(pgs.glyphs[g].glyph)	×
85	table.insert(rv, {	×
86	height = -rect.y / 1024,
87	depth = (rect.y + rect.height) / 1024,
88	width = rect.width / 1024,
89	glyph = pgs.glyphs[g].glyph,
90	pgs = pgs,
91	font = font,
92	-- text = text
93	})
94	end
95	end
96	return rv, twidth	×
97	end
98
99	function shaper.addShapedGlyphToNnodeValue (_, nnodevalue, shapedglyph)	×
100	nnodevalue.pgs = shapedglyph.pgs	×
101	nnodevalue.font = shapedglyph.font	×
102	end
103
104	return shaper	×

sile-typesetter / sile / 9307175333

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