1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
//
// "$Id$"
//
// Character compose processing for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2005 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
//
// MRS: Uncomment the following define to get the original (pre-1.1.2)
// dead key support code. The original code apparently did not
// work on Belgian keyboards.
//
//#define OLD_DEAD_KEY_CODE
#ifdef __APPLE__
static const char* const compose_pairs =
":A*A,C'E~N:O:U'a`a^a:a~a*a,c'e`e"
"^e:e'i`i^i:i~n'o`o^o:o~o'u`u^u:u"
"+ o /c# SS* P|ssrOcOTM' : !=AE/O"
"oo+-<=>=Y=mudtSgPipiS a dgOmaeo/"
"? ! !!v-f ~~Dt<<>>.. `A~A~OOEoe"
"- --''``\"'\"`:-^V:y:Y//E=< > fifl"
"++..,,_\"%%^A^E'A:E`E'I^I:I`I'O^O"
"mc`O'U^U`U||^ ~^_ u . * , ~-; v ";
#else
static const char* const compose_pairs =
"=E _'f _\"..+ ++^ %%^S< OE ^Z ^''^^\"\"^-*- --~ TM^s> oe ^z:Y"
" ! % # $ y=| & : c a <<~ - r _ * +-2 3 ' u p . , 1 o >>141234? "
"`A'A^A~A:A*AAE,C`E'E^E:E`I'I^I:I-D~N`O'O^O~O:Ox O/`U'U^U:U'YTHss"
"`a'a^a~a:a*aae,c`e'e^e:e`i'i^i:i-d~n`o'o^o~o:o-:o/`u'u^u:u'yth:y";
#endif
#if !defined(WIN32) && defined(OLD_DEAD_KEY_CODE) // X only
// X dead-key lookup table. This turns a dead-key keysym into the
// first of two characters for one of the compose sequences. These
// keysyms start at 0xFE50.
// Win32 handles the dead keys before FLTK can see them. This is
// unfortunate, because you don't get the preview effect.
static char dead_keys[] = {
'`', // XK_dead_grave
'\'', // XK_dead_acute
'^', // XK_dead_circumflex
'~', // XK_dead_tilde
'_', // XK_dead_macron
0, // XK_dead_breve
'.', // XK_dead_abovedot
':', // XK_dead_diaeresis
'*', // XK_dead_abovering
0, // XK_dead_doubleacute
'v', // XK_dead_caron
',' // XK_dead_cedilla
// 0, // XK_dead_ogonek
// 0, // XK_dead_iota
// 0, // XK_dead_voiced_sound
// 0, // XK_dead_semivoiced_sound
// 0 // XK_dead_belowdot
};
#endif // !WIN32 && OLD_DEAD_KEY_CODE
int Fl::compose_state = 0;
int Fl::compose(int& del) {
del = 0;
unsigned char ascii = (unsigned)e_text[0];
// Alt+letters are reserved for shortcuts. But alt+foreign letters
// has to be allowed, because some key layouts require alt to be held
// down in order to type them...
//
// OSX users sometimes need to hold down ALT for keys, so we only check
// for META on OSX...
#ifdef __APPLE__
if ((e_state & FL_META) && !(ascii & 128)) return 0;
#else
if ((e_state & (FL_ALT|FL_META)) && !(ascii & 128)) return 0;
#endif // __APPLE__
if (compose_state == 1) { // after the compose key
if ( // do not get distracted by any modifier keys
e_keysym==FL_Shift_L||
e_keysym==FL_Shift_R ||
e_keysym==FL_Alt_L ||
e_keysym==FL_Alt_R ||
e_keysym==FL_Meta_L ||
e_keysym==FL_Meta_R ||
e_keysym==FL_Control_R ||
e_keysym==FL_Control_L ||
e_keysym==FL_Menu
) return 0;
if (ascii == ' ') { // space turns into nbsp
#ifdef __APPLE__
int len = fl_utf8encode(0xCA, e_text);
e_text[len] = '\0';
e_length = len;
#else
int len = fl_utf8encode(0xA0, e_text);
e_text[len] = '\0';
e_length = len;
#endif
compose_state = 0;
return 1;
} else if (ascii < ' ' || ascii == 127) {
compose_state = 0;
return 0;
}
// see if it is either character of any pair:
for (const char *p = compose_pairs; *p; p += 2)
if (p[0] == ascii || p[1] == ascii) {
if (p[1] == ' ') {
int len = fl_utf8encode((p-compose_pairs)/2+0xA0, e_text);
e_text[len] = '\0';
e_length = len;
}
compose_state = ascii;
return 1;
}
if (e_length) { // compose key also "quotes" control characters
compose_state = 0;
return 1;
}
} else if (compose_state) { // second character of compose
char c1 = char(compose_state); // retrieve first character
#ifdef __APPLE__
if ( (c1==0x60 && ascii==0xab) || (c1==0x27 && ascii==0x60)) {
del = 1;
compose_state = '^';
e_text[0] = 0xf6;
return 1;
}
if (ascii==' ') {
del = 0;
compose_state = 0;
return 0;
}
#endif
// now search for the pair in either order:
for (const char *p = compose_pairs; *p; p += 2) {
if (p[0] == ascii && p[1] == c1 || p[1] == ascii && p[0] == c1) {
int len = fl_utf8encode((p-compose_pairs)/2+0xA0, e_text);
e_text[len] = '\0';
e_length = len;
del = 1; // delete the old character and insert new one
compose_state = 0;
return 1;
}
}
}
int i = e_keysym;
// See if they type the compose prefix key:
if (i == FL_Control_R || i == 0xff20/* Multi-Key */) {
compose_state = 1;
return 1;
}
#ifdef WIN32
#elif (defined __APPLE__)
if (e_state & 0x40000000) {
if (ascii<0x80)
compose_state = ascii;
else
compose_state = compose_pairs[(ascii-0x80)*2];
return 1;
}
#else
// See if they typed a dead key. This gets it into the same state as
// typing prefix+accent:
if (i >= 0xfe50 && i <= 0xfe5b) {
# ifdef OLD_DEAD_KEY_CODE
ascii = dead_keys[i-0xfe50];
for (const char *p = compose_pairs; *p; p += 2)
if (p[0] == ascii) {
compose_state = ascii;
return 1;
}
# else
ascii = e_text[0];
for (const char *p = compose_pairs; *p; p += 2)
if (p[0] == ascii ||
(p[1] == ' ' && (p - compose_pairs) / 2 + 0xA0 == ascii)) {
compose_state = p[0];
return 1;
}
# endif // OLD_DEAD_KEY_CODE
compose_state = 0;
return 1;
}
#endif
// Only insert non-control characters:
if (e_length && (ascii & ~31 && ascii!=127)) {compose_state = 0; return 1;}
return 0;
}
|
