work to improve keyboard keycode -> scancode processing

Signed-off-by: Aric Stewart <aric@codeweavers.com>

1 files changed, 144 insertions, 122 deletions

diff --git a/utils.js b/utils.js
index 3a0ee28..5ef23d6 100644
--- a/utils.js
+++ b/utils.js
@@ -94,146 +94,168 @@ function hexdump_buffer(a)
     }
 }
 
-
 /*----------------------------------------------------------------------------
-**  FIXME FIXME FIXME - web key code to scan code mapping
-**      This is really atrocious code.  At the end of the day, we need to
-**  map keystrokes generated by the browser into the scan codes required
-**  by spice.  This table was literally built by me pressing keys on my keyboard
-**  and typing the resulting value in by hand.
-**      I'm sure Europeans will hate me, and the Chinese will likely *never*
-**  talk to me.
+** Converting keycodes to AT scancodes is very hard.
+** luckly there are some resources on the web and in the Xorg driver that help
+** us figure out what browser depenend keycodes match to what scancodes.
+**
+** This will most likely not work for non US keyboard and browsers other than
+** modern Chrome and FireFox.
 **--------------------------------------------------------------------------*/
-var scanmap = [];
-var codei = 1;
-scanmap[27]                 = codei++;
-scanmap['1'.charCodeAt(0)]  = codei++;
-scanmap['2'.charCodeAt(0)]  = codei++;
-scanmap['3'.charCodeAt(0)]  = codei++;
-scanmap['4'.charCodeAt(0)]  = codei++;
-scanmap['5'.charCodeAt(0)]  = codei++;
-scanmap['6'.charCodeAt(0)]  = codei++;
-scanmap['7'.charCodeAt(0)]  = codei++;
-scanmap['8'.charCodeAt(0)]  = codei++;
-scanmap['9'.charCodeAt(0)]  = codei++;
-scanmap['0'.charCodeAt(0)]  = codei++;
-scanmap[109]                = codei++;
-scanmap['='.charCodeAt(0)]  = codei++;
-scanmap[8]                  = codei++;
-scanmap[9]                  = codei++;
-scanmap['Q'.charCodeAt(0)]  = codei++;
-scanmap['W'.charCodeAt(0)]  = codei++;
-scanmap['E'.charCodeAt(0)]  = codei++;
-scanmap['R'.charCodeAt(0)]  = codei++;
-scanmap['T'.charCodeAt(0)]  = codei++;
-scanmap['Y'.charCodeAt(0)]  = codei++;
-scanmap['U'.charCodeAt(0)]  = codei++;
-scanmap['I'.charCodeAt(0)]  = codei++;
-scanmap['O'.charCodeAt(0)]  = codei++;
-scanmap['P'.charCodeAt(0)]  = codei++;
-scanmap[219]                = codei++;
-scanmap[221]                = codei++;
-scanmap[13]                 = codei++;
-scanmap[17]                 = codei++;
-scanmap['A'.charCodeAt(0)]  = codei++;
-scanmap['S'.charCodeAt(0)]  = codei++;
-scanmap['D'.charCodeAt(0)]  = codei++;
-scanmap['F'.charCodeAt(0)]  = codei++;
-scanmap['G'.charCodeAt(0)]  = codei++;
-scanmap['H'.charCodeAt(0)]  = codei++;
-scanmap['J'.charCodeAt(0)]  = codei++;
-scanmap['K'.charCodeAt(0)]  = codei++;
-scanmap['L'.charCodeAt(0)]  = codei++;
-scanmap[';'.charCodeAt(0)]  = codei++;
-scanmap[222]                = codei++;
-scanmap[192]                = codei++;
-scanmap[16]                 = codei++;
-scanmap[220]                = codei++;
-scanmap['Z'.charCodeAt(0)]  = codei++;
-scanmap['X'.charCodeAt(0)]  = codei++;
-scanmap['C'.charCodeAt(0)]  = codei++;
-scanmap['V'.charCodeAt(0)]  = codei++;
-scanmap['B'.charCodeAt(0)]  = codei++;
-scanmap['N'.charCodeAt(0)]  = codei++;
-scanmap['M'.charCodeAt(0)]  = codei++;
-scanmap[188]                = codei++;
-scanmap[190]                = codei++;
-scanmap[191]                = codei++;
-codei++;  // right shift seems to be same
-scanmap[106]                = codei++;
-scanmap[18]                 = codei++;
-scanmap[' '.charCodeAt(0)]  = codei++;
-scanmap[20]                 = codei++;
-scanmap[112]                = codei++;
-scanmap[113]                = codei++;
-scanmap[114]                = codei++;
-scanmap[115]                = codei++;
-scanmap[116]                = codei++;
-scanmap[117]                = codei++;
-scanmap[118]                = codei++;
-scanmap[119]                = codei++;
-scanmap[120]                = codei++;
-scanmap[121]                = codei++;
-scanmap[144]                = codei++;
-scanmap[145]                = codei++; // Scroll lock
-scanmap[103]                = codei++;
-scanmap[104]                = codei++;
-scanmap[105]                = codei++;
-codei++;// skip minus;
-scanmap[100]                = codei++;
-scanmap[101]                = codei++;
-scanmap[102]                = codei++;
-scanmap[107]                = codei++;
-scanmap[97]                 = codei++;
-scanmap[98]                 = codei++;
-scanmap[99]                 = codei++;
-scanmap[96]                 = codei++;
-scanmap[110]                = codei++;
-
-// F11 + 12 go up at 87/88, after the less
-codei = 87;
-scanmap[122]                = codei++;
-scanmap[123]                = codei++;
-
-codei = 99;
-scanmap[42]                 = codei++;
-codei++; // skip alt
-scanmap[19]                 = codei++; // break
-
-scanmap[36]                 = codei++; // home 
-scanmap[38]                 = codei++; // up
-scanmap[33]                 = codei++; // page up
-scanmap[37]                 = codei++; // left
-scanmap[39]                 = codei++; // right
-scanmap[35]                 = codei++; // end
-scanmap[40]                 = codei++; // down
-scanmap[34]                 = codei++; // page down
-scanmap[45]                 = codei++; // insert
-scanmap[46]                 = codei++; // delete
+var common_scanmap = [];
+common_scanmap['Q'.charCodeAt(0)]  = KEY_Q;
+common_scanmap['W'.charCodeAt(0)]  = KEY_W;
+common_scanmap['E'.charCodeAt(0)]  = KEY_E;
+common_scanmap['R'.charCodeAt(0)]  = KEY_R;
+common_scanmap['T'.charCodeAt(0)]  = KEY_T;
+common_scanmap['Y'.charCodeAt(0)]  = KEY_Y;
+common_scanmap['U'.charCodeAt(0)]  = KEY_U;
+common_scanmap['I'.charCodeAt(0)]  = KEY_I;
+common_scanmap['O'.charCodeAt(0)]  = KEY_O;
+common_scanmap['P'.charCodeAt(0)]  = KEY_P;
+common_scanmap['A'.charCodeAt(0)]  = KEY_A;
+common_scanmap['S'.charCodeAt(0)]  = KEY_S;
+common_scanmap['D'.charCodeAt(0)]  = KEY_D;
+common_scanmap['F'.charCodeAt(0)]  = KEY_F;
+common_scanmap['G'.charCodeAt(0)]  = KEY_G;
+common_scanmap['H'.charCodeAt(0)]  = KEY_H;
+common_scanmap['J'.charCodeAt(0)]  = KEY_J;
+common_scanmap['K'.charCodeAt(0)]  = KEY_K;
+common_scanmap['L'.charCodeAt(0)]  = KEY_L;
+common_scanmap['Z'.charCodeAt(0)]  = KEY_Z;
+common_scanmap['X'.charCodeAt(0)]  = KEY_X;
+common_scanmap['C'.charCodeAt(0)]  = KEY_C;
+common_scanmap['V'.charCodeAt(0)]  = KEY_V;
+common_scanmap['B'.charCodeAt(0)]  = KEY_B;
+common_scanmap['N'.charCodeAt(0)]  = KEY_N;
+common_scanmap['M'.charCodeAt(0)]  = KEY_M;
+common_scanmap[' '.charCodeAt(0)]  = KEY_Space;
+common_scanmap[13]                 = KEY_Enter;
+common_scanmap[27]                 = KEY_Escape;
+common_scanmap[8]                  = KEY_BackSpace;
+common_scanmap[9]                  = KEY_Tab;
+common_scanmap[16]                 = KEY_ShiftL;
+common_scanmap[17]                 = KEY_LCtrl;
+common_scanmap[18]                 = KEY_Alt;
+common_scanmap[20]                 = KEY_CapsLock;
+common_scanmap[144]                = KEY_NumLock;
+common_scanmap[112]                = KEY_F1;
+common_scanmap[113]                = KEY_F2;
+common_scanmap[114]                = KEY_F3;
+common_scanmap[115]                = KEY_F4;
+common_scanmap[116]                = KEY_F5;
+common_scanmap[117]                = KEY_F6;
+common_scanmap[118]                = KEY_F7;
+common_scanmap[119]                = KEY_F8;
+common_scanmap[120]                = KEY_F9;
+common_scanmap[121]                = KEY_F10;
+common_scanmap[122]                = KEY_F11;
+common_scanmap[123]                = KEY_F12;
+
+/* These externded scancodes do not line up with values from atKeynames */
+common_scanmap[42]                 = 99;
+common_scanmap[19]                 = 101;    // Break
+common_scanmap[111]                = 0xE035; // KP_Divide
+common_scanmap[106]                = 0xE037; // KP_Multiply
+common_scanmap[36]                 = 0xE047; // Home
+common_scanmap[38]                 = 0xE048; // Up
+common_scanmap[33]                 = 0xE049; // PgUp
+common_scanmap[37]                 = 0xE04B; // Left
+common_scanmap[39]                 = 0xE04D; // Right
+common_scanmap[35]                 = 0xE04F; // End
+common_scanmap[40]                 = 0xE050; // Down
+common_scanmap[34]                 = 0xE051; // PgDown
+common_scanmap[45]                 = 0xE052; // Insert
+common_scanmap[46]                 = 0xE053; // Delete
+common_scanmap[44]                 = 0x2A37; // Print
+
+/* These are not common between ALL browsers but are between Firefox and DOM3 */
+common_scanmap['1'.charCodeAt(0)]  = KEY_1;
+common_scanmap['2'.charCodeAt(0)]  = KEY_2;
+common_scanmap['3'.charCodeAt(0)]  = KEY_3;
+common_scanmap['4'.charCodeAt(0)]  = KEY_4;
+common_scanmap['5'.charCodeAt(0)]  = KEY_5;
+common_scanmap['6'.charCodeAt(0)]  = KEY_6;
+common_scanmap['7'.charCodeAt(0)]  = KEY_7;
+common_scanmap['8'.charCodeAt(0)]  = KEY_8;
+common_scanmap['9'.charCodeAt(0)]  = KEY_9;
+common_scanmap['0'.charCodeAt(0)]  = KEY_0;
+common_scanmap[145]                = KEY_ScrollLock;
+common_scanmap[103]                = KEY_KP_7;
+common_scanmap[104]                = KEY_KP_8;
+common_scanmap[105]                = KEY_KP_9;
+common_scanmap[100]                = KEY_KP_4;
+common_scanmap[101]                = KEY_KP_5;
+common_scanmap[102]                = KEY_KP_6;
+common_scanmap[107]                = KEY_KP_Plus;
+common_scanmap[97]                 = KEY_KP_1;
+common_scanmap[98]                 = KEY_KP_2;
+common_scanmap[99]                 = KEY_KP_3;
+common_scanmap[96]                 = KEY_KP_0;
+common_scanmap[110]                = KEY_KP_Decimal;
+common_scanmap[191]                = KEY_Slash;
+common_scanmap[190]                = KEY_Period;
+common_scanmap[188]                = KEY_Comma;
+common_scanmap[220]                = KEY_BSlash;
+common_scanmap[192]                = KEY_Tilde;
+common_scanmap[222]                = KEY_Quote;
+common_scanmap[219]                = KEY_LBrace;
+common_scanmap[221]                = KEY_RBrace;
+
+common_scanmap[91]                 = 0xE05B; //KEY_LMeta
+common_scanmap[92]                 = 0xE05C; //KEY_RMeta
+common_scanmap[93]                 = 0xE05D; //KEY_Menu
+
+/* Firefox/Mozilla codes */
+var firefox_scanmap = [];
+firefox_scanmap[109]                = KEY_Minus;
+firefox_scanmap[61]                 = KEY_Equal;
+firefox_scanmap[59]                 = KEY_SemiColon;
+
+/* DOM3 codes */
+var DOM_scanmap = [];
+DOM_scanmap[189]                = KEY_Minus;
+DOM_scanmap[187]                = KEY_Equal;
+DOM_scanmap[186]                = KEY_SemiColon;
+
+function get_scancode(code)
+{
+    if (common_scanmap[code] === undefined)
+    {
+        if (navigator.userAgent.indexOf("Firefox") != -1)
+            return firefox_scanmap[code];
+        else
+            return DOM_scanmap[code];
+    }
+    else
+        return common_scanmap[code];
+}
 
 function keycode_to_start_scan(code)
 {
-    if (scanmap[code] === undefined)
+    var scancode = get_scancode(code);
+    if (scancode === undefined)
     {
         alert('no map for ' + code);
         return 0;
     }
 
-    if (scanmap[code] < 0x100) {
-        return scanmap[code];
+    if (scancode < 0x100) {
+        return scancode;
     } else {
-        return 0xe0 | ((scanmap[code] - 0x100) << 8);
+        return 0xe0 | ((scancode - 0x100) << 8);
     }
 }
 
 function keycode_to_end_scan(code)
 {
-    if (scanmap[code] === undefined)
+    var scancode = get_scancode(code);
+    if (scancode === undefined)
         return 0;
 
-    if (scanmap[code] < 0x100) {
-        return scanmap[code] | 0x80;
+    if (scancode < 0x100) {
+        return scancode | 0x80;
     } else {
-        return 0x80e0 | ((scanmap[code] - 0x100) << 8);
+        return 0x80e0 | ((scancode - 0x100) << 8);
     }
 }