ead0e1523f
Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
154 lines
4 KiB
C++
154 lines
4 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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ks/layout/us.cpp
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The United States keyboard layout.
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******************************************************************************/
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#include "../../platform.h"
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#include "../../keyboard.h"
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#include "../../keycodes.h"
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#include "us.h"
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namespace Sortix
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{
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const unsigned MOD_LSHIFT = (1U<<0U);
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const unsigned MOD_CAPS = (1U<<1U);
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const uint32_t LAYOUT_US[4UL*128UL] =
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{
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0, 0, 0, 0, /* unused: kbkey 0 is invalid */
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0, 0, 0, 0, /* KBKEY_ESC */
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'1', '!', '1', '!',
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'2', '@', '2', '@',
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'3', '#', '3', '#',
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'4', '$', '4', '$',
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'5', '%', '5', '%',
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'6', '^', '6', '^',
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'7', '&', '7', '&',
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'8', '*', '8', '*',
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'9', '(', '9', '(',
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'0', ')', '0', ')',
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'-', '_', '-', '_',
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'=', '+', '=', '+',
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'\b', '\b', '\b', '\b',
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'\t', '\t', '\t', '\t',
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'q', 'Q', 'Q', 'q',
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'w', 'W', 'W', 'w',
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'e', 'E', 'E', 'e',
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'r', 'R', 'R', 'r',
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't', 'T', 'T', 't',
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'y', 'Y', 'Y', 'y',
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'u', 'U', 'U', 'u',
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'i', 'I', 'I', 'i',
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'o', 'O', 'O', 'o',
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'p', 'P', 'P', 'p',
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'[', '{', '[', '{',
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']', '}', ']', '}',
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'\n', '\n', '\n', '\n',
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0, 0, 0, 0, /* KBKEY_LCTRL */
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'a', 'A', 'A', 'a',
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's', 'S', 'S', 's',
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'd', 'D', 'D', 'd',
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'f', 'F', 'F', 'f',
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'g', 'G', 'G', 'g',
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'h', 'H', 'H', 'h',
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'j', 'J', 'J', 'j',
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'k', 'K', 'K', 'k',
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'l', 'L', 'L', 'l',
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';', ':', ';', ':',
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':', '"', ':', '"',
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'`', '~', '`', '~',
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0, 0, 0, 0, /* KBKEY_LSHIFT */
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'\\', '|', '\\', '|',
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'z', 'Z', 'Z', 'z',
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'x', 'X', 'X', 'x',
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'c', 'C', 'C', 'c',
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'v', 'V', 'V', 'v',
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'b', 'B', 'B', 'b',
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'n', 'N', 'N', 'n',
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'm', 'M', 'M', 'm',
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',', '<', ',', '<',
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'.', '>', '.', '>',
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'/', '?', '/', '?',
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0, 0, 0, 0, /* KBKEY_RSHIFT */
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'*', '*', '*', '*',
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0, 0, 0, 0, /* KBKEY_LALT */
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' ', ' ', ' ', ' ',
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0, 0, 0, 0, /* KBKEY_CAPSLOCK */
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0, 0, 0, 0, /* KBKEY_F1 */
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0, 0, 0, 0, /* KBKEY_F2 */
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0, 0, 0, 0, /* KBKEY_F3 */
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0, 0, 0, 0, /* KBKEY_F4 */
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0, 0, 0, 0, /* KBKEY_F5 */
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0, 0, 0, 0, /* KBKEY_F6 */
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0, 0, 0, 0, /* KBKEY_F7 */
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0, 0, 0, 0, /* KBKEY_F8 */
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0, 0, 0, 0, /* KBKEY_F9 */
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0, 0, 0, 0, /* KBKEY_F10 */
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0, 0, 0, 0, /* KBKEY_NUMLOCK */
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0, 0, 0, 0, /* KBKEY_SCROLLLOCK */
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0, 0, 0, 0, /* KBKEY_KPAD7 */
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0, 0, 0, 0, /* KBKEY_KPAD8 */
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0, 0, 0, 0, /* KBKEY_KPAD9 */
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'-', '-', '-', '-',
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0, 0, 0, 0, /* KBKEY_KPAD4 */
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0, 0, 0, 0, /* KBKEY_KPAD5 */
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0, 0, 0, 0, /* KBKEY_KPAD6 */
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'+', '+', '+', '+',
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/* Nothing printable after this point */
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};
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KBLayoutUS::KBLayoutUS()
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{
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modifiers = 0;
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}
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KBLayoutUS::~KBLayoutUS()
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{
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}
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bool KBLayoutUS::ProcessModifier(int logickey, int modkey, unsigned flag)
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{
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if ( logickey == modkey ) { modifiers |= flag; return true; }
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if ( logickey == -modkey ) { modifiers &= ~flag; return true; }
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return false;
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}
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uint32_t KBLayoutUS::Translate(int kbkey)
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{
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if ( kbkey == KBKEY_LSHIFT ) { modifiers |= MOD_LSHIFT; return 0; }
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if ( kbkey == -KBKEY_LSHIFT ) { modifiers &= ~MOD_LSHIFT; return 0; }
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if ( kbkey == KBKEY_CAPSLOCK ) { modifiers ^= MOD_CAPS; return 0; }
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int abskbkey = (kbkey < 0) ? -kbkey : kbkey;
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unsigned usedmods = modifiers & (MOD_LSHIFT | MOD_CAPS);
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size_t index = (abskbkey<<2) | usedmods;
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// Check if the kbkey is outside the layout structure (not printable).
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size_t numchars = sizeof(LAYOUT_US) / 4UL / sizeof(uint32_t);
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if ( numchars < abskbkey ) { return 0; }
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return LAYOUT_US[index];
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}
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}
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