/*
* Copyright (C) 2015-2016 Département de l'Instruction Publique (DIP-SEM)
*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UBKeyboardPalette.h"
#include <X11/Xlib.h>
#include <X11/keysym.h>
// The key code to be sent.
// A full list of available codes can be found in /usr/include/X11/keysymdef.h
//#define KEYCODE XK_Down
// Function to create a keyboard event
XKeyEvent createKeyEvent(Display *display, Window &win,
Window &winRoot, bool press,
int keycode, int modifiers)
{
XKeyEvent event;
event.display = display;
event.window = win;
event.root = winRoot;
event.subwindow = None;
event.time = CurrentTime;
event.x = 1;
event.y = 1;
event.x_root = 1;
event.y_root = 1;
event.same_screen = True;
event.keycode = keycode;
event.state = modifiers;
if(press)
event.type = KeyPress;
else
event.type = KeyRelease;
return event;
}
void x11SendKey(Display *display, int keyCode, int modifiers)
{
// Get the root window for the current display.
Window winRoot = XDefaultRootWindow(display);
if (winRoot==0)
return;
// Find the window which has the current keyboard focus.
Window winFocus;
int revert;
XGetInputFocus(display, &winFocus, &revert);
// Send a fake key press event to the window.
XKeyEvent event = createKeyEvent(display, winFocus, winRoot, true, keyCode, modifiers);
XSendEvent(event.display, event.window, True, KeyPressMask, (XEvent *)&event);
// Send a fake key release event to the window.
event = createKeyEvent(display, winFocus, winRoot, false, keyCode, modifiers);
XSendEvent(event.display, event.window, True, KeyPressMask, (XEvent *)&event);
}
/*
void traceKeyCodes()
{
Display *display = XOpenDisplay(0);
if(display == NULL)
return;
int min_keycodes, max_keycodes, byte_per_code;
XDisplayKeycodes(display, &min_keycodes, &max_keycodes);
KeySym* keySyms = XGetKeyboardMapping(display, min_keycodes,
max_keycodes - min_keycodes, &byte_per_code);
qDebug() << "Codes table, min_keycodes: " << min_keycodes << ", max_keycodes: "
<< max_keycodes << ", bytes_per_code:" << byte_per_code;
for(int i=0; i<max_keycodes - min_keycodes; i++)
{
QString str;
for(int j=0; j<byte_per_code;j++)
{
str += QString::number(keySyms[i*byte_per_code + j], 16);
str += ":";
}
qDebug() << i << ":" << str;
}
XFree(keySyms);
XCloseDisplay(display);
}
*/
void UBKeyboardButton::sendUnicodeSymbol(KEYCODE keycode)
{
// Obtain the X11 display.
Display *display = XOpenDisplay(0);
if(display == NULL)
return;
if (!keycode.empty())
{
int modifier = keycode.modifier;
if (keycode.modifier==2) modifier = 0x2000;
if (keycode.modifier==3) modifier = 0x2001;
if (keycode.modifier==4) modifier = 0x4000;
if (keycode.modifier==5) modifier = 0x4001;
//modifiers 6 and 7 seems are not available.... They are reassigned in layout creationtime
//if (keycode.modifier==6) modifier = 0x6000;
//if (keycode.modifier==7) modifier = 0x6001;
x11SendKey(display, keycode.code + keyboard->min_keycodes , modifier);
}
XCloseDisplay(display);
}
void UBKeyboardButton::sendControlSymbol(int nSymbol)
{
// Obtain the X11 display.
Display *display = XOpenDisplay(0);
if(display == NULL)
return;
KeyCode keyCode = XKeysymToKeycode(display, nSymbol);
if (keyCode != NoSymbol)
{
x11SendKey(display, keyCode, 0);
}
XCloseDisplay(display);
}
void UBKeyboardPalette::createCtrlButtons()
{
ctrlButtons = new UBKeyboardButton*[9];
ctrlButtons[0] = new UBCntrlButton(this, XK_BackSpace, "backspace");
ctrlButtons[1] = new UBCntrlButton(this, XK_Tab, "tab");
ctrlButtons[2] = new UBCapsLockButton(this, "capslock");
ctrlButtons[3] = new UBCntrlButton(this, tr("Enter"), XK_Return);
ctrlButtons[4] = new UBShiftButton(this, "shift");
ctrlButtons[5] = new UBShiftButton(this, "shift");
ctrlButtons[6] = new UBLocaleButton(this);
ctrlButtons[7] = new UBCntrlButton(this, "", XK_space);
ctrlButtons[8] = new UBLocaleButton(this);
}
void UBKeyboardPalette::checkLayout()
{}
void UBKeyboardPalette::onActivated(bool activated)
{
if (activated)
{
if (storage)
{
qDebug() << "Keybard already activated....";
return;
}
Display *display = XOpenDisplay(0);
if(display == NULL)
return;
XDisplayKeycodes(display, &this->min_keycodes, &this->max_keycodes);
KeySym* keySyms = XGetKeyboardMapping(display, min_keycodes,
max_keycodes - min_keycodes, &byte_per_code);
storage = keySyms;
XCloseDisplay(display);
onLocaleChanged(locales[nCurrentLocale]);
}
else
{
Display *display = XOpenDisplay(0);
if(display == NULL)
{
qDebug() << "Keybard not activated....";
return;
}
KeySym* keySyms = (KeySym*)storage;
if (keySyms!=NULL)
{
qDebug() << "Default key table restored.....";
XChangeKeyboardMapping(display, min_keycodes, byte_per_code,
keySyms, max_keycodes - min_keycodes);
XFree(keySyms);
storage = NULL;
}
XCloseDisplay(display);
}
}
void UBKeyboardPalette::onLocaleChanged(UBKeyboardLocale* locale)
{
const int maxMapOffset = 3; //Suppose to have at least 2 keysym groups due to X11 xlib specification
Display *display = XOpenDisplay(0);
if(display == NULL)
return;
int byte_per_code;
KeySym* keySyms = XGetKeyboardMapping(display, min_keycodes,
max_keycodes - min_keycodes, &byte_per_code);
for(int i=0; i<SYMBOL_KEYS_COUNT; i++)
{
// loop by keybt
for(int j=0; j<8; j++)
{
KEYCODE& kc = (*locale)[i]->codes[j];
if (!kc.empty())
{
if (kc.modifier <= maxMapOffset)
keySyms[kc.code * byte_per_code + kc.modifier] = kc.symbol;
}
}
}
//Now look for modifiers > 5 and reassign them to free places
for(int i=0; i<SYMBOL_KEYS_COUNT; i++)
{
// loop by keybt
for(int j=0; j<8; j++)
{
KEYCODE& kc = (*locale)[i]->codes[j];
if (!kc.empty())
{
if (kc.modifier > maxMapOffset)
{
for(int i1=0; i1<SYMBOL_KEYS_COUNT; i1++)
for(int j1=0; j1<=maxMapOffset; j1++)
if (keySyms[i1 * byte_per_code + j1]==NoSymbol)
{
kc.code =i1;
kc.modifier =j1;
break;
}
}
keySyms[kc.code * byte_per_code + kc.modifier] = kc.symbol;
}
}
}
XChangeKeyboardMapping(display, min_keycodes, byte_per_code, keySyms, max_keycodes - min_keycodes);
XFree(keySyms);
XCloseDisplay(display);
}