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// KeyUtil.cc for FbTk
// Copyright (c) 2003 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include "KeyUtil.hh"
#include "App.hh"
#include <X11/keysym.h>
#include <X11/XKBlib.h>
#include <string>
#ifdef HAVE_CSTRING
#include <cstring>
#else
#include <string.h>
#endif
namespace {
struct t_modlist{
const char *str;
unsigned int mask;
bool operator == (const char *modstr) const {
return (strcasecmp(str, modstr) == 0 && mask !=0);
}
};
const struct t_modlist modlist[] = {
{"shift", ShiftMask},
{"lock", LockMask},
{"control", ControlMask},
{"mod1", Mod1Mask},
{"mod2", Mod2Mask},
{"mod3", Mod3Mask},
{"mod4", Mod4Mask},
{"mod5", Mod5Mask},
{"alt", Mod1Mask},
{"ctrl", ControlMask},
{0, 0}
};
}
namespace FbTk {
std::auto_ptr<KeyUtil> KeyUtil::s_keyutil;
KeyUtil &KeyUtil::instance() {
if (s_keyutil.get() == 0)
s_keyutil.reset(new KeyUtil());
return *s_keyutil.get();
}
KeyUtil::KeyUtil()
: m_modmap(0), m_numlock(0), m_scrolllock(0)
{
init();
}
void KeyUtil::init() {
loadModmap();
}
KeyUtil::~KeyUtil() {
if (m_modmap)
XFreeModifiermap(m_modmap);
}
void KeyUtil::loadModmap() {
if (m_modmap)
XFreeModifiermap(m_modmap);
m_modmap = XGetModifierMapping(App::instance()->display());
// find modifiers and set them
for (int i=0, realkey=0; i<8; ++i) {
for (int key=0; key<m_modmap->max_keypermod; ++key, ++realkey) {
if (m_modmap->modifiermap[realkey] == 0)
continue;
KeySym ks = XkbKeycodeToKeysym(App::instance()->display(),
m_modmap->modifiermap[realkey], 0, 0);
switch (ks) {
// we just want to clean the Lock modifier, not specifically the
// XK_Caps_Lock key
// the others tend to vary from distro to distro, though
case XK_Scroll_Lock:
m_scrolllock = modlist[i].mask;
break;
case XK_Num_Lock:
m_numlock = modlist[i].mask;
break;
}
}
}
}
/**
Grabs a key with the modifier
and with numlock,capslock and scrollock
*/
void KeyUtil::grabKey(unsigned int key, unsigned int mod, Window win) {
Display *display = App::instance()->display();
const unsigned int nummod = instance().numlock();
const unsigned int scrollmod = instance().scrolllock();
// Grab with numlock, capslock and scrlock
for (int i = 0; i < 8; i++) {
XGrabKey(display, key, mod | (i & 1 ? LockMask : 0) |
(i & 2 ? nummod : 0) | (i & 4 ? scrollmod : 0),
win, True, GrabModeAsync, GrabModeAsync);
}
}
void KeyUtil::grabButton(unsigned int button, unsigned int mod, Window win,
unsigned int event_mask, Cursor cursor) {
Display *display = App::instance()->display();
const unsigned int nummod = instance().numlock();
const unsigned int scrollmod = instance().scrolllock();
// Grab with numlock, capslock and scrlock
for (int i = 0; i < 8; i++) {
XGrabButton(display, button, mod | (i & 1 ? LockMask : 0) |
(i & 2 ? nummod : 0) | (i & 4 ? scrollmod : 0),
win, False, event_mask, GrabModeAsync, GrabModeAsync,
None, cursor);
}
}
/**
@return keycode of keystr on success else 0
*/
unsigned int KeyUtil::getKey(const char *keystr) {
KeyCode code = 0;
if (keystr) {
KeySym sym = XStringToKeysym(keystr);
if (sym != NoSymbol) {
code = XKeysymToKeycode(App::instance()->display(), sym);
}
}
return code;
}
/**
@return the modifier for the modstr else zero on failure.
*/
unsigned int KeyUtil::getModifier(const char *modstr) {
if (!modstr)
return 0;
// find mod mask string
for (unsigned int i=0; modlist[i].str !=0; i++) {
if (modlist[i] == modstr)
return modlist[i].mask;
}
return 0;
}
/// Ungrabs the keys
void KeyUtil::ungrabKeys(Window win) {
Display * display = App::instance()->display();
XUngrabKey(display, AnyKey, AnyModifier, win);
}
void KeyUtil::ungrabButtons(Window win) {
Display * display = App::instance()->display();
XUngrabButton(display, AnyButton, AnyModifier, win);
}
unsigned int KeyUtil::keycodeToModmask(unsigned int keycode) {
XModifierKeymap *modmap = instance().m_modmap;
if (!modmap)
return 0;
// search through modmap for this keycode
for (int mod=0; mod < 8; mod++) {
for (int key=0; key < modmap->max_keypermod; ++key) {
// modifiermap is an array with 8 sets of keycodes
// each max_keypermod long, but in a linear array.
if (modmap->modifiermap[modmap->max_keypermod*mod + key] == keycode) {
return modlist[mod].mask;
}
}
}
// no luck
return 0;
}
} // end namespace FbTk
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