lyx_mirror/src/kbsequence.C
Lars Gullik Bjønnes 4b9ed498ea fix the deadkey bug and a patch from Dekel
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@1280 a592a061-630c-0410-9148-cb99ea01b6c8
2000-12-17 06:09:35 +00:00

287 lines
7.7 KiB
C

/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1995 Matthias Ettrich
* Copyright 1995-2000 The LyX Team.
*
* ====================================================== */
#include <config.h>
#include <cstring>
#include <X11/Xlib.h>
#include "gettext.h"
#ifdef __GNUG__
#pragma implementation
#endif
#include "kbsequence.h"
#include "kbmap.h"
#include "debug.h"
using std::endl;
// The only modifiers that we handle. We want to throw away things
// like NumLock.
enum { ModsMask = ShiftMask | ControlMask | Mod1Mask };
// === static functions ===================================================
/* ---F+------------------------------------------------------------------ *\
Function : printKeysym
Called by : kb_sequence::print and printKeyMap. RVDK_PATCH_5
Purpose : prints a keysym, including modifiers.
Parameters: key - keysym
mod - modifiers
buf - string where the result goes
maxlen - length of string (including '\0')
Returns : length of printed string if ok, 0 otherwise.
\* ---F------------------------------------------------------------------- */
extern
void printKeysym(unsigned int key, unsigned int mod, string & buf);
// === kb_sequence methods ================================================
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::addkey
Called by : [user]
Purpose : add a key to the sequence, look up in map and return action
Parameters: key - keysym of key
mod - modifier mask
nmod - modifier veto mask (unused now)
Returns : action or -1 if error (no map defined or key not found)
\* ---F------------------------------------------------------------------- */
int kb_sequence::addkey(unsigned int key,
unsigned int mod, unsigned int nmod /*= 0*/)
{
//lyxerr << "kb_sequence::addkey: length is [" << length << "]\n"
// << "kb_sequence::addkey::key == [" << key << "]\n"
// << "kb_sequence::addkey::mod == [" << mod << "]" << endl;
if (length <= 0) {
length = 0;
sequence.clear();
modifiers.clear();
}
modifiers.push_back(mod + (nmod << 16));
sequence.push_back(key);
++length;
if (curmap)
return curmap->lookup(key, mod, this);
return -1;
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::parse
Called by : [user]
Purpose : parse a string that holds a key sequence and add the keys
Parameters: s - string holding the key sequence
Returns : 0 - if ok, error pos if error
Note : Keys must be separated with whitespace;
Use the keysym names used by XStringToKeysym
Prefixes are S-, C-, M- for shift, control, meta
\* ---F------------------------------------------------------------------- */
int kb_sequence::parse(string const & s)
{
if (s.empty()) return 1;
string::size_type i = 0;
unsigned int mod = 0, nmod = 0;
while (i < s.length()) {
if (s[i] && (s[i]) <= ' ') ++i;
if (i >= s.length()) break;
if (s[i + 1] == '-') { // is implicit that s[i] == true
switch (s[i]) {
case 's': case 'S':
mod |= ShiftMask;
i += 2;
continue;
case 'c': case 'C':
mod |= ControlMask;
i += 2;
continue;
case 'm': case 'M':
mod |= Mod1Mask;
i += 2;
continue;
default:
return i + 1;
}
} else if (s[i] == '~' && s[i + 1] && s[i + 2] == '-') {
switch (s[i + 1]) {
case 's': case 'S':
nmod |= ShiftMask;
i += 3;
continue;
case 'c': case 'C':
nmod |= ControlMask;
i += 3;
continue;
case 'm': case 'M':
nmod |= Mod1Mask;
i += 3;
continue;
default:
return i + 2;
}
} else {
string tbuf;
string::size_type j = i;
for (; j < s.length() && s[j] > ' '; ++j)
tbuf += s[j]; // (!!!check bounds :-)
KeySym key = XStringToKeysym(tbuf.c_str());
if (key == NoSymbol) {
lyxerr[Debug::KBMAP]
<< "kbmap.C: No such keysym: "
<< tbuf << endl;
return j;
}
i = j;
addkey(key, mod, nmod);
mod = 0;
nmod = 0;
}
}
return 0;
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::print
Called by : [user]
Purpose : print the currently defined sequence into a string
Parameters: buf - string where the result goes
when_defined - only print when sequence is real: length > 0.
Returns : 0, if ok, -1 if string too long
\* ---F------------------------------------------------------------------- */
int kb_sequence::print(string & buf, bool when_defined) const
{
//lyxerr << "kb_sequence::print: length is [" << length << "]" << endl;
KeySym key;
unsigned int mod;
int l = length;
if (l < 0 && !when_defined ) l = -l;
for (int i = 0; i < l; ++i) {
key = sequence[i];
mod = modifiers[i] & 0xffff;
//lyxerr << "kb_sequence::sequence[" << i << "] == [" << key << "]\n"
// << "kb_sequence::modifiers[" << i << "] == [" << mod << "]"
// << endl;
printKeysym(key, mod, buf); // RVDK_PATCH_5
if (i + 1 < l) { // append a blank
buf += ' ';
}
}
return 0;
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::printOptions
Called by : [user]
Purpose : print the available key options from the current state in the
sequence. RVDK_PATCH_5
Parameters: buf - string where the result goes
maxlen - length of string (including '\0')
Returns : 0, if ok, -1 if string too long
\* ---F------------------------------------------------------------------- */
int kb_sequence::printOptions(string & buf) const
{
print(buf, true);
if (!curmap) return -1;
buf += _(" options: ");
curmap->print(buf);
return 0;
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::delseq
Called by : [user]
Purpose : mark the sequence as deleted
Parameters: none
Returns : nothing
\* ---F------------------------------------------------------------------- */
void kb_sequence::delseq()
{
// negative length marks sequence as deleted, but we can still
// print() it or retrieve the last char using getiso()
length = -length;
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::getsym
Called by : [user], getiso
Purpose : get the keysym of the last key in sequence
Parameters: none
Returns : keysym
\* ---F------------------------------------------------------------------- */
unsigned int kb_sequence::getsym() const
{
int l = length;
if (l == 0) return NoSymbol;
if (l < 0) l = -l;
return sequence[l - 1];
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::getiso
Called by : [user]
Purpose : return iso character code of last key, if any
Parameters: none
Returns : iso code or 0 if none
\* ---F------------------------------------------------------------------- */
char kb_sequence::getiso() const
{
int const c = getsym();
if (c > 0xff)
return '\0';
return c;
}
/* ---F+------------------------------------------------------------------ *\
Function : kb_sequence::reset
Called by : [user]
Purpose : reset sequence to initial state. RVDK_PATCH_5
Parameters: none
Returns : void
\* ---F------------------------------------------------------------------- */
void kb_sequence::reset()
{
delseq();
curmap = stdmap;
if (length > 0) length = -length;
}
/* === End of File: kbmap.C ============================================== */