blob: 8aea820d1db01b5a41db61389b13d85f9ef98b20 (
plain)
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
|
//
// "$Id$"
//
// Character compose processing for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/x.H>
#ifndef FL_DOXYGEN
int Fl::compose_state = 0;
#endif
#if !defined(WIN32) && !defined(__APPLE__)
extern XIC fl_xim_ic;
#endif
/** Any text editing widget should call this for each FL_KEYBOARD event.
Use of this function is very simple.
<p>If <i>true</i> is returned, then it has modified the
Fl::event_text() and Fl::event_length() to a set of <i>bytes</i> to
insert (it may be of zero length!). In will also set the "del"
parameter to the number of <i>bytes</i> to the left of the cursor to
delete, this is used to delete the results of the previous call to
Fl::compose().
<p>If <i>false</i> is returned, the keys should be treated as function
keys, and del is set to zero. You could insert the text anyways, if
you don't know what else to do.
<p>Though the current implementation returns immediately, future
versions may take quite awhile, as they may pop up a window or do
other user-interface things to allow characters to be selected.
*/
int Fl::compose(int& del) {
int condition;
#if defined(__APPLE__)
int has_text_key = Fl::compose_state || Fl::e_keysym <= '~' || Fl::e_keysym == FL_Iso_Key ||
(Fl::e_keysym >= FL_KP && Fl::e_keysym <= FL_KP_Last && Fl::e_keysym != FL_KP_Enter);
condition = Fl::e_state&(FL_META | FL_CTRL) ||
(Fl::e_keysym >= FL_Shift_L && Fl::e_keysym <= FL_Alt_R) || // called from flagsChanged
!has_text_key ;
#else
unsigned char ascii = (unsigned char)e_text[0];
#if defined(WIN32)
condition = (e_state & (FL_ALT | FL_META)) && !(ascii & 128) ;
#else
condition = (e_state & (FL_ALT | FL_META | FL_CTRL)) && !(ascii & 128) ;
#endif
#endif
if (condition) { del = 0; return 0;} // this stuff is to be treated as a function key
del = Fl::compose_state;
#ifndef __APPLE__
Fl::compose_state = 0;
// Only insert non-control characters:
if ( (!Fl::compose_state) && ! (ascii & ~31 && ascii!=127)) { return 0; }
#endif
return 1;
}
/**
If the user moves the cursor, be sure to call Fl::compose_reset().
The next call to Fl::compose() will start out in an initial state. In
particular it will not set "del" to non-zero. This call is very fast
so it is ok to call it many times and in many places.
*/
void Fl::compose_reset()
{
#ifdef __APPLE__
Fl_X::compose_state(0);
#else
Fl::compose_state = 0;
#if !defined(WIN32)
if (fl_xim_ic) XmbResetIC(fl_xim_ic);
#endif
#endif
}
//
// End of "$Id$"
//
|
