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/* Copyright (C) 2017 Brian P. Hinz
*
* This 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; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 this software; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
package com.tigervnc.vncviewer;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import com.tigervnc.rfb.*;
import static java.awt.event.KeyEvent.*;
import static com.tigervnc.rfb.Keysymdef.*;
public class KeyMap {
public final static int NoSymbol = 0;
private static final HashMap<Integer, Character> code_map_java_to_char;
static {
// Certain KeyStrokes fail to produce a valid character (CTRL+ALT+...
// on Windows and Mac almost never does). For these cases, the best
// we can try to do is to map to the ASCII symbol from the keyCode.
code_map_java_to_char = new HashMap<Integer, Character>();
for (int c=32; c<0x7f; c++) {
int keyCode = KeyEvent.getExtendedKeyCodeForChar(c);
if (keyCode != KeyEvent.VK_UNDEFINED)
// Not all ASCII characters have VK_ constants, see vk_to_ascii()
code_map_java_to_char.put(keyCode, (char)c);
}
}
private static int[][] vkey_map = {
/* KEYCODE LOCATION */
/* UNKNOWN STANDARD LEFT RIGHT NUMPAD */
{ VK_BACK_SPACE, NoSymbol, XK_BackSpace, NoSymbol, NoSymbol, NoSymbol },
{ VK_TAB, NoSymbol, XK_Tab, NoSymbol, NoSymbol, NoSymbol },
{ VK_CANCEL, NoSymbol, XK_Cancel, NoSymbol, NoSymbol, NoSymbol },
{ VK_ENTER, NoSymbol, XK_Return, NoSymbol, NoSymbol, XK_KP_Enter },
{ VK_SHIFT, NoSymbol, XK_Shift_L, XK_Shift_L, XK_Shift_R, NoSymbol },
{ VK_CONTROL, NoSymbol, XK_Control_L, XK_Control_L, XK_Control_R, NoSymbol },
{ VK_ALT, NoSymbol, XK_Alt_L, XK_Alt_L, XK_Alt_R, NoSymbol },
/* VK_PAUSE left out on purpose because interpretation depends on state of CTRL. See further down. */
{ VK_CAPS_LOCK, NoSymbol, XK_Caps_Lock, NoSymbol, NoSymbol, NoSymbol },
{ VK_ESCAPE, NoSymbol, XK_Escape, NoSymbol, NoSymbol, NoSymbol },
{ VK_END, NoSymbol, XK_End, NoSymbol, NoSymbol, XK_KP_End },
{ VK_HOME, NoSymbol, XK_Home, NoSymbol, NoSymbol, XK_KP_Home },
{ VK_LEFT, NoSymbol, XK_Left, NoSymbol, NoSymbol, XK_KP_Left },
{ VK_UP, NoSymbol, XK_Up, NoSymbol, NoSymbol, XK_KP_Up },
{ VK_RIGHT, NoSymbol, XK_Right, NoSymbol, NoSymbol, XK_KP_Right },
{ VK_DOWN, NoSymbol, XK_Down, NoSymbol, NoSymbol, XK_KP_Down },
/* VK_PRINTSCREEN left out on purpose because interpretation depends on state of CTRL. See further down. */
{ VK_PAGE_UP, NoSymbol, XK_Page_Up, NoSymbol, NoSymbol, XK_KP_Page_Up },
{ VK_PAGE_DOWN, NoSymbol, XK_Page_Down, NoSymbol, NoSymbol, XK_KP_Page_Down },
{ VK_BEGIN, NoSymbol, XK_Begin, NoSymbol, NoSymbol, XK_KP_Begin },
{ VK_KP_LEFT, NoSymbol, XK_KP_Left, NoSymbol, NoSymbol, XK_KP_Left },
{ VK_KP_UP, NoSymbol, XK_KP_Up, NoSymbol, NoSymbol, XK_KP_Up },
{ VK_KP_RIGHT, NoSymbol, XK_KP_Right, NoSymbol, NoSymbol, XK_KP_Right },
{ VK_KP_DOWN, NoSymbol, XK_KP_Down, NoSymbol, NoSymbol, XK_KP_Down },
{ VK_INSERT, NoSymbol, XK_Insert, NoSymbol, NoSymbol, XK_KP_Insert },
{ VK_DELETE, NoSymbol, XK_Delete, NoSymbol, NoSymbol, XK_KP_Delete },
{ VK_WINDOWS, NoSymbol, NoSymbol, XK_Super_L, XK_Super_R, NoSymbol },
{ VK_CONTEXT_MENU, NoSymbol, XK_Menu, NoSymbol, NoSymbol, NoSymbol },
{ VK_NUMPAD0, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_0 },
{ VK_NUMPAD1, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_1 },
{ VK_NUMPAD2, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_2 },
{ VK_NUMPAD3, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_3 },
{ VK_NUMPAD4, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_4 },
{ VK_NUMPAD5, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_5 },
{ VK_NUMPAD6, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_6 },
{ VK_NUMPAD7, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_7 },
{ VK_NUMPAD8, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_8 },
{ VK_NUMPAD9, NoSymbol, NoSymbol, NoSymbol, NoSymbol, XK_KP_9 },
{ VK_MULTIPLY, NoSymbol, XK_KP_Multiply, NoSymbol, NoSymbol, XK_KP_Multiply },
{ VK_ADD, NoSymbol, XK_KP_Add, NoSymbol, NoSymbol, XK_KP_Add },
{ VK_SUBTRACT, NoSymbol, XK_KP_Subtract, NoSymbol, NoSymbol, XK_KP_Subtract },
{ VK_DIVIDE, NoSymbol, XK_KP_Divide, NoSymbol, NoSymbol, XK_KP_Divide },
{ VK_SEPARATER, NoSymbol, XK_KP_Separator, NoSymbol, NoSymbol, XK_KP_Separator },
{ VK_DECIMAL, NoSymbol, XK_KP_Decimal, NoSymbol, NoSymbol, XK_KP_Decimal },
{ VK_F1, NoSymbol, XK_F1, XK_L1, XK_R1, NoSymbol },
{ VK_F2, NoSymbol, XK_F2, XK_L2, XK_R2, NoSymbol },
{ VK_F3, NoSymbol, XK_F3, XK_L3, XK_R3, NoSymbol },
{ VK_F4, NoSymbol, XK_F4, XK_L4, XK_R4, NoSymbol },
{ VK_F5, NoSymbol, XK_F5, XK_L5, XK_R5, NoSymbol },
{ VK_F6, NoSymbol, XK_F6, XK_L6, XK_R6, NoSymbol },
{ VK_F7, NoSymbol, XK_F7, XK_L7, XK_R7, NoSymbol },
{ VK_F8, NoSymbol, XK_F8, XK_L8, XK_R8, NoSymbol },
{ VK_F9, NoSymbol, XK_F9, XK_L9, XK_R9, NoSymbol },
{ VK_F10, NoSymbol, XK_F10, XK_L10, XK_R10, NoSymbol },
{ VK_F11, NoSymbol, XK_F11, NoSymbol, XK_R11, NoSymbol },
{ VK_F12, NoSymbol, XK_F12, NoSymbol, XK_R12, NoSymbol },
{ VK_F13, NoSymbol, XK_F13, NoSymbol, XK_R13, NoSymbol },
{ VK_F14, NoSymbol, XK_F14, NoSymbol, XK_R14, NoSymbol },
{ VK_F15, NoSymbol, XK_F15, NoSymbol, XK_R15, NoSymbol },
{ VK_F16, NoSymbol, XK_F16, NoSymbol, NoSymbol, NoSymbol },
{ VK_F17, NoSymbol, XK_F17, NoSymbol, NoSymbol, NoSymbol },
{ VK_F18, NoSymbol, XK_F18, NoSymbol, NoSymbol, NoSymbol },
{ VK_F19, NoSymbol, XK_F19, NoSymbol, NoSymbol, NoSymbol },
{ VK_F20, NoSymbol, XK_F20, NoSymbol, NoSymbol, NoSymbol },
{ VK_F21, NoSymbol, XK_F21, NoSymbol, NoSymbol, NoSymbol },
{ VK_F22, NoSymbol, XK_F22, NoSymbol, NoSymbol, NoSymbol },
{ VK_F23, NoSymbol, XK_F23, NoSymbol, NoSymbol, NoSymbol },
{ VK_F24, NoSymbol, XK_F24, NoSymbol, NoSymbol, NoSymbol },
{ VK_NUM_LOCK, NoSymbol, XK_Num_Lock, NoSymbol, NoSymbol, XK_Num_Lock },
{ VK_SCROLL_LOCK, NoSymbol, XK_Scroll_Lock, NoSymbol, NoSymbol, NoSymbol },
{ VK_ALT_GRAPH, NoSymbol, XK_ISO_Level3_Shift, NoSymbol, NoSymbol, NoSymbol },
{ VK_META, NoSymbol, NoSymbol, XK_Meta_L, XK_Meta_R, NoSymbol },
{ VK_MODECHANGE, NoSymbol, XK_Mode_switch, NoSymbol, NoSymbol, NoSymbol },
{ VK_CLEAR, NoSymbol, XK_Clear, NoSymbol, NoSymbol, XK_KP_Begin },
{ VK_AGAIN, NoSymbol, XK_Redo, NoSymbol, NoSymbol, NoSymbol },
{ VK_UNDO, NoSymbol, XK_Undo, NoSymbol, NoSymbol, NoSymbol },
{ VK_FIND, NoSymbol, XK_Find, NoSymbol, NoSymbol, NoSymbol },
{ VK_STOP, NoSymbol, XK_Cancel, NoSymbol, NoSymbol, NoSymbol },
{ VK_HELP, NoSymbol, XK_Help, NoSymbol, NoSymbol, NoSymbol },
{ VK_KANJI, NoSymbol, XK_Kanji, NoSymbol, NoSymbol, NoSymbol },
{ VK_KATAKANA, NoSymbol, XK_Katakana, NoSymbol, NoSymbol, NoSymbol },
{ VK_HIRAGANA, NoSymbol, XK_Hiragana, NoSymbol, NoSymbol, NoSymbol },
{ VK_PREVIOUS_CANDIDATE, NoSymbol, XK_PreviousCandidate, NoSymbol, NoSymbol, NoSymbol },
{ VK_CODE_INPUT, NoSymbol, XK_Codeinput, NoSymbol, NoSymbol, NoSymbol },
{ VK_JAPANESE_ROMAN, NoSymbol, XK_Romaji, NoSymbol, NoSymbol, NoSymbol },
{ VK_KANA_LOCK, NoSymbol, XK_Kana_Lock, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_ABOVEDOT, NoSymbol, XK_dead_abovedot, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_ABOVERING, NoSymbol, XK_dead_abovering, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_ACUTE, NoSymbol, XK_dead_acute, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_BREVE, NoSymbol, XK_dead_breve, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_CARON, NoSymbol, XK_dead_caron, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_CEDILLA, NoSymbol, XK_dead_cedilla, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_CIRCUMFLEX, NoSymbol, XK_dead_circumflex, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_DIAERESIS, NoSymbol, XK_dead_diaeresis, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_DOUBLEACUTE, NoSymbol, XK_dead_doubleacute, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_GRAVE, NoSymbol, XK_dead_grave, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_IOTA, NoSymbol, XK_dead_iota, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_MACRON, NoSymbol, XK_dead_macron, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_OGONEK, NoSymbol, XK_dead_ogonek, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_SEMIVOICED_SOUND, NoSymbol, XK_dead_semivoiced_sound, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_TILDE, NoSymbol, XK_dead_tilde, NoSymbol, NoSymbol, NoSymbol },
{ VK_DEAD_VOICED_SOUND, NoSymbol, XK_dead_voiced_sound, NoSymbol, NoSymbol, NoSymbol },
{ VK_ALPHANUMERIC, NoSymbol, XK_Eisu_Shift, NoSymbol, NoSymbol, NoSymbol },
{ VK_ALL_CANDIDATES, NoSymbol, XK_MultipleCandidate, NoSymbol, NoSymbol, NoSymbol },
{ VK_KANA, NoSymbol, XK_Kana_Shift, NoSymbol, NoSymbol, NoSymbol },
{ VK_JAPANESE_KATAKANA, NoSymbol, XK_Katakana, NoSymbol, NoSymbol, NoSymbol },
{ VK_JAPANESE_HIRAGANA, NoSymbol, XK_Hiragana, NoSymbol, NoSymbol, NoSymbol },
{ VK_COMPOSE, NoSymbol, XK_Multi_key, NoSymbol, NoSymbol, NoSymbol },
};
public static int vkey_to_keysym(KeyEvent ev)
{
int keyCode = get_keycode_fallback_extended(ev);
// Start with keys that either don't generate a symbol, or
// generate the same symbol as some other key.
if (keyCode == KeyEvent.VK_PAUSE)
return (ev.isControlDown() ? XK_Break : XK_Pause);
else if (keyCode == KeyEvent.VK_PRINTSCREEN)
return (ev.isControlDown() ? XK_Sys_Req : XK_Print);
else
for(int i = 0; i < vkey_map.length; i++)
if (keyCode == vkey_map[i][0])
return vkey_map[i][ev.getKeyLocation()+1];
// Unknown special key?
if (KeyEvent.getKeyText(keyCode).isEmpty()) {
vlog.error("Unknown key code: 0x%04x", keyCode);
return NoSymbol;
}
// Pressing Ctrl wreaks havoc with the symbol lookup...
int ucs = (int)ev.getKeyChar();
if (ev.isControlDown()) {
// For CTRL-<letter>, CTRL is sent separately, so just send <letter>.
if ((ucs >= 1 && ucs <= 26 && !ev.isShiftDown()) ||
// CTRL-{, CTRL-|, CTRL-} also map to ASCII 96-127
(ucs >= 27 && ucs <= 29 && ev.isShiftDown()))
ucs += 96;
// For CTRL-SHIFT-<letter>, send capital <letter> to emulate behavior
// of Linux. For CTRL-@, send @. For CTRL-_, send _. For CTRL-^,
// send ^.
else if (ucs < 32)
ucs += 64;
// If it's still undefined, map the keyCode to ASCII symbol
else if (keyCode >= 0 && keyCode <= 127)
if (ucs == CHAR_UNDEFINED || ev.isAltDown())
ucs = vk_to_ascii(keyCode, ev.isShiftDown());
else if (VncViewer.os.startsWith("mac os x") && ev.isMetaDown())
// Alt on OS X behaves more like AltGr on other systems, and to get
// sane behaviour we should translate things in that manner for the
// remote VNC server. However that means we lose the ability to use
// Alt as a shortcut modifier. Do what RealVNC does and hijack the
// left command key as an Alt replacement.
ucs = vk_to_ascii(keyCode, ev.isShiftDown());
}
// Dead keys are represented by their spacing equivalent
// (or something similar depending on the layout)
if (Character.getType(ucs) == Character.COMBINING_SPACING_MARK)
return Keysym2ucs.ucs2keysym(Keysym2ucs.ucs2combining(ucs));
if (Character.isDefined(ucs))
return Keysym2ucs.ucs2keysym(ucs);
return NoSymbol;
}
public static int get_keycode_fallback_extended(final KeyEvent ev) {
final int keyCode = ev.getKeyCode();
return (keyCode == 0) ? ev.getExtendedKeyCode() : keyCode;
}
private static int vk_to_ascii(int vk, boolean shift) {
char c = 0;
if (code_map_java_to_char.containsKey(vk))
c = code_map_java_to_char.get(vk);
// 0x25 (%) and 0x3F (?) do not have VK_ constants
if (vk == VK_5)
c = shift ? '%' : c;
else if (vk == VK_SLASH)
c = shift ? '?' : c;
if (Character.isLetter(c))
c = shift ? Character.toUpperCase(c) : Character.toLowerCase(c);
return (int)c;
}
static LogWriter vlog = new LogWriter("KeyMap");
}
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