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1%D \module
2%D   [      file=s-fonts-emoji,
3%D        version=2017.04.26,
4%D          title=\CONTEXT\ Style File,
5%D       subtitle=Emoji Helpers,
6%D         author=Hans Hagen,
7%D           date=\currentdate,
8%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
9%C
10%C This module is part of the \CONTEXT\ macro||package and is
11%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
12%C details.
13
14\startluacode
15moduledata.emoji    = moduledata.emoji or { }
16
17local find          = string.find
18local sortedhash    = table.sortedhash
19local utfvalues     = string.utfvalues
20
21local context       = context
22
23local traverseid    = nodes.traverseid
24
25local glyph_code    = nodes.nodecodes.glyph
26
27local descriptions  = fonts.hashes.descriptions
28local checkedemoji  = fonts.symbols.emoji.checked
29local compactemoji  = characters.emoji.compact
30local resolvedemoji = characters.emoji.resolve
31local knownemoji    = characters.emoji.known
32
33local function emojisnippets(name)
34    local d = descriptions[true]
35    if d then
36        local e = resolvedemoji(name)
37        local s = { }
38        for b in utfvalues(e) do
39            if not (b == 0x200D or (b >= 0x1F3FB and b <= 0x1F3FF)) then
40                local t = { }
41                s[#s+1] = t
42                local c = d[b]
43                if c then
44                    c = c.colors
45                    if c then
46                        for i=1,#c do
47                            t[#t+1] = c[i].slot
48                        end
49                    else
50                        t[#t+1] = b
51                    end
52                end
53            end
54        end
55        return #s > 0 and s or nil
56    end
57end
58
59local function emojiglyphs(name)
60    local d = descriptions[true]
61    if d then
62        local e = checkedemoji(name)
63        local s = { }
64        for n in traverseid(glyph_code,e) do
65            local b = n.char
66            if not (b == 0x200D or (b >= 0x1F3FB and b <= 0x1F3FF)) then
67                local t = { }
68                s[#s+1] = t
69                local c = d[b]
70                if c then
71                    c = c.colors
72                    if c then
73                        for i=1,#c do
74                            t[#t+1] = c[i].slot
75                        end
76                    else
77                        t[#t+1] = b
78                    end
79                end
80            end
81        end
82        nodes.flushlist(e)
83        return #s > 0 and s or nil
84    end
85end
86
87characters.emojisnippets  = emojisnippets
88fonts.symbols.emojiglyphs = emojiglyphs
89
90function moduledata.emoji.showsnippets(name)
91    local s = emojisnippets(name)
92    if s then
93        local ni = #s
94        for i=1,ni do
95            local si = s[i]
96            local nj = #si
97            for j=1,nj do
98                context.WrapEmojiSnippet(i,ni,j,nj,si[j])
99            end
100        end
101    end
102end
103
104function moduledata.emoji.showglyphs(name)
105    local s = emojiglyphs(name)
106    if s then
107        local ni = #s
108        for i=1,ni do
109            local si = s[i]
110            local nj = #si
111            for j=1,nj do
112                context.WrapEmojiSnippet(i,ni,j,nj,si[j])
113            end
114        end
115    end
116end
117
118function moduledata.emoji.showknown(list)
119    local hash = knownemoji()
120    local size = 0
121    if list then
122        list = utilities.parsers.settings_to_array(list)
123        size = #list
124        if size == 0 then
125            list = false
126        else
127            for i=1,size do
128                list[i] = string.escapedpattern(list[i])
129            end
130        end
131    end
132    for k, v in sortedhash(hash) do
133        local okay = true
134        if find(compactemoji(k),"%-s%-t") then
135            okay = false
136        elseif list then
137            okay = false
138            for i=1,size do
139                if find(k,list[i]) then
140                    okay = true
141                    break
142                end
143            end
144        end
145        if okay then
146            context("\\WrapEmojiPlusText{%s}{%!tex!}",k,v)
147        end
148    end
149end
150
151local function convert(t,k)
152    local v = { }
153    for i=1,#k do
154        local p = k[i]
155    end
156    return v
157end
158
159function moduledata.emoji.showpalette(list)
160    local colorpalettes = fonts.hashes.resources[true].colorpalettes
161    if colorpalettes then
162        if list then
163            list = utilities.parsers.settings_to_hash(list)
164            if not next(list) then
165                list = false
166            end
167        end
168        context.starttabulate { "||lp|" }
169        for i=1,#colorpalettes do
170            if not list or list[tostring(i)] then
171                local palette = colorpalettes[i]
172                context.BC()
173                context.type(i)
174                context.NC()
175                for j=1,#palette do
176                    local p = palette[j]
177                    local r, g, b = p[1]/255, p[2]/255, p[3]/255
178                    local s = attributes.colors.rgbtogray(r,g,b)
179                    context.WrapEmojiColorEntry(j,s,r,g,b)
180                end
181                context.NC()
182                context.NR()
183            end
184        end
185        context.stoptabulate()
186    end
187end
188
189\stopluacode
190
191\unexpanded\def\WrapEmojiPlusText#1#2%
192  {\dontleavehmode\hbox\bgroup
193     \tttf % determines em
194     \hpack to 8\emwidth{\setfontid\scratchcounter#2\hss}%
195     \hpack to 8\emwidth{\setfontid\scratchcounter\checkedemoji{#1}\hss}%
196     #1%
197   \egroup\par}
198
199\unexpanded\def\ShowEmoji
200  {\dosingleempty\doShowEmoji}
201
202\unexpanded\def\doShowEmoji[#1]%
203  {\begingroup
204   \scratchcounter\fontid\font
205   \ctxlua{moduledata.emoji.showknown([[#1]])}%
206   \endgroup}
207
208\unexpanded\def\WrapEmojiSnippet#1#2#3#4#5%
209  {\ifnum#3=\plusone
210     \par
211     \dontleavehmode\ruledhbox\bgroup
212   \fi
213   \ruledhbox to 2\emwidth{\hss\char#5\hss}%
214   \ifnum#3=#4\relax
215     \egroup
216     \par
217   \fi}
218
219\unexpanded\def\ShowEmojiSnippets[#1]%
220  {\ctxlua{moduledata.emoji.showsnippets("#1")}}
221
222\unexpanded\def\ShowEmojiGlyphs[#1]%
223  {\ctxlua{moduledata.emoji.showglyphs("#1")}}
224
225\unexpanded\def\OverlayEmojiSnippet#1#2#3#4#5%
226  {\setbox\scratchbox\hbox{\color[trace:#3]{\char#5}}%
227   \ifnum#3=\plusone
228     \ifnum#1=\plusone
229       \dontleavehmode\ruledhbox\bgroup
230     \fi
231     \hbox\bgroup
232   \else
233     \hskip-\wd\scratchbox
234   \fi
235   \box\scratchbox
236   \ifnum#3=#4\relax
237     \egroup
238     \ifnum#1=#2\relax
239       \egroup
240     \fi
241   \fi}
242
243\unexpanded\def\ShowEmojiSnippetsOverlay[#1]%
244  {\begingroup
245   \let\WrapEmojiSnippet\OverlayEmojiSnippet
246   \ctxlua{moduledata.emoji.showsnippets("#1")}%
247   \endgroup}
248
249\unexpanded\def\WrapEmojiColorEntry#1#2#3#4#5%
250  {\dontleavehmode\hpack\bgroup
251     \definecolor
252        [dummy]
253        [r=#3,g=#4,b=#5]%
254     \backgroundline
255        [dummy]
256        {\setbox\scratchbox\hpack to 2\emwidth{\hss\ifdim#2pt<.5pt\white\fi\ttx#1\hss}%
257         \ht\scratchbox.8\strutht\dp\scratchbox.6\strutdp\box\scratchbox}%
258   \egroup
259   \quad}
260
261\unexpanded\def\ShowEmojiPalettes
262  {\dosingleempty\doShowEmojiPalettes}
263
264\unexpanded\def\doShowEmojiPalettes[#1]%
265  {\ctxlua{moduledata.emoji.showpalette([[#1]])}}
266
267% \definefontfeature[bandw:overlay][ccmp=yes,dist=yes]
268% \definefontfeature[color:overlay][ccmp=yes,dist=yes,colr=yes]
269% %definefontfeature[bandw:svg]    [ccmp=yes,dist=yes]
270% \definefontfeature[color:svg]    [ccmp=yes,dist=yes,svg=yes]
271% %definefontfeature[bandw:bitmap] [ccmp=yes,dist=yes,sbix=yes]
272% \definefontfeature[color:bitmap] [ccmp=yes,dist=yes,sbix=yes]
273
274\definefontfeature[seguiemj-cl][color:overlay]
275\definefontfeature[seguiemj-bw][bandw:overlay]
276
277% \definefont[MyEmoji] [seguiemj*seguiemj-bw]
278% \definefont[MyEmoji] [seguiemj*seguiemj-cl]
279% \definefont[MyEmoji] [emojionecolor-svginot*default,svg]
280% \definefont[MyEmoji] [emojionemozilla*default,overlay]
281% \definefont[MyEmoji] [applecoloremoji*default,bitmap]
282
283% \definecolor[trace:1][s=0,t=.5,a=1]
284% \definecolor[trace:2][s=0,t=.5,a=1]
285% \definecolor[trace:3][s=0,t=.5,a=1]
286% \definecolor[trace:4][s=0,t=.5,a=1]
287% \definecolor[trace:5][s=0,t=.5,a=1]
288% \definecolor[trace:6][s=0,t=.5,a=1]
289
290\continueifinputfile{s-fonts-emoji.mkiv}
291
292\starttext
293
294\start
295
296\definedfont[file:seguiemj.any*default,seguiemj-cl]
297
298% \ShowEmojiSnippets
299%   [family man light skin tone woman dark skin tone girl medium skin tone boy medium skin tone]
300
301% \ShowEmojiSnippetsOverlay
302%   [family man light skin tone woman dark skin tone girl medium skin tone boy medium skin tone]
303
304% \ShowEmojiGlyphs
305%   [family man light skin tone woman dark skin tone girl medium skin tone boy medium skin tone]
306
307% \page
308
309% \ShowEmoji[^man]
310
311% \ShowEmoji[backhand index pointing down]
312% \ShowEmoji[backhand index pointing up]
313
314\startTEXpage
315[\char8205\char128104]=\char988828\par
316[\char8205\char128105]=\char988851\par
317[\char8205\char983484]=\char988834\par
318[\char8205\char983485]=\char988835\par
319[\char8205\char983486]=\char988836\par
320[\char8205\char983487]=\char988837\par
321[\char8205\char983488]=\char988838\par
322[\char8205\char983495]=\char988858\par
323[\char8205\char983496]=\char988859\par
324[\char8205\char983497]=\char988860\par
325[\char8205\char983498]=\char988861\par
326[\char8205\char983499]=\char988862\par
327\stopTEXpage
328
329
330
331
332
333
334
335
336% \page
337
338% \definecolor[emoji-base][r=.4]
339% \definecolor[emoji-gray][s=.5,t=.5,a=1]
340
341% \definefontcolorpalette
342%   [emoji-gray]
343%   [emoji-base,emoji-gray]
344
345% \definefontfeature[seguiemj-cl][ccmp=yes,dist=yes,colr=emoji-gray]
346
347% \definedfont[seguiemj*seguiemj-cl]
348
349% \ShowEmoji
350
351% \page
352
353% \ShowEmojiPalettes[1]
354
355\stop
356
357\stoptext
358