render_handler_key.c

#include "ecef.h"
#define XK_3270  // for XK_3270_BackTab
#include <Evas.h>
#include <Ecore_X.h>
#include <X11/keysym.h>
#include <X11/XF86keysym.h>

// From ui/events/keycodes/keyboard_code_conversion_x.cc.
// Gdk key codes (e.g. GDK_BackSpace) and X keysyms (e.g. XK_BackSpace) share
// the same values.
KeyboardCode KeyboardCodeFromXKeysym(unsigned int keysym) {
  switch (keysym) {
    case XK_BackSpace:
      return VKEY_BACK;
    case XK_Delete:
    case XK_KP_Delete:
      return VKEY_DELETE;
    case XK_Tab:
    case XK_KP_Tab:
    case XK_ISO_Left_Tab:
    case XK_3270_BackTab:
      return VKEY_TAB;
    case XK_Linefeed:
    case XK_Return:
    case XK_KP_Enter:
    case XK_ISO_Enter:
      return VKEY_RETURN;
    case XK_Clear:
    case XK_KP_Begin:  // NumPad 5 without Num Lock, for crosbug.com/29169.
      return VKEY_CLEAR;
    case XK_KP_Space:
    case XK_space:
      return VKEY_SPACE;
    case XK_Home:
    case XK_KP_Home:
      return VKEY_HOME;
    case XK_End:
    case XK_KP_End:
      return VKEY_END;
    case XK_Page_Up:
    case XK_KP_Page_Up:  // aka XK_KP_Prior
      return VKEY_PRIOR;
    case XK_Page_Down:
    case XK_KP_Page_Down:  // aka XK_KP_Next
      return VKEY_NEXT;
    case XK_Left:
    case XK_KP_Left:
      return VKEY_LEFT;
    case XK_Right:
    case XK_KP_Right:
      return VKEY_RIGHT;
    case XK_Down:
    case XK_KP_Down:
      return VKEY_DOWN;
    case XK_Up:
    case XK_KP_Up:
      return VKEY_UP;
    case XK_Escape:
      return VKEY_ESCAPE;
    case XK_Kana_Lock:
    case XK_Kana_Shift:
      return VKEY_KANA;
    case XK_Hangul:
      return VKEY_HANGUL;
    case XK_Hangul_Hanja:
      return VKEY_HANJA;
    case XK_Kanji:
      return VKEY_KANJI;
    case XK_Henkan:
      return VKEY_CONVERT;
    case XK_Muhenkan:
      return VKEY_NONCONVERT;
    case XK_Zenkaku_Hankaku:
      return VKEY_DBE_DBCSCHAR;
    case XK_A:
    case XK_a:
      return VKEY_A;
    case XK_B:
    case XK_b:
      return VKEY_B;
    case XK_C:
    case XK_c:
      return VKEY_C;
    case XK_D:
    case XK_d:
      return VKEY_D;
    case XK_E:
    case XK_e:
      return VKEY_E;
    case XK_F:
    case XK_f:
      return VKEY_F;
    case XK_G:
    case XK_g:
      return VKEY_G;
    case XK_H:
    case XK_h:
      return VKEY_H;
    case XK_I:
    case XK_i:
      return VKEY_I;
    case XK_J:
    case XK_j:
      return VKEY_J;
    case XK_K:
    case XK_k:
      return VKEY_K;
    case XK_L:
    case XK_l:
      return VKEY_L;
    case XK_M:
    case XK_m:
      return VKEY_M;
    case XK_N:
    case XK_n:
      return VKEY_N;
    case XK_O:
    case XK_o:
      return VKEY_O;
    case XK_P:
    case XK_p:
      return VKEY_P;
    case XK_Q:
    case XK_q:
      return VKEY_Q;
    case XK_R:
    case XK_r:
      return VKEY_R;
    case XK_S:
    case XK_s:
      return VKEY_S;
    case XK_T:
    case XK_t:
      return VKEY_T;
    case XK_U:
    case XK_u:
      return VKEY_U;
    case XK_V:
    case XK_v:
      return VKEY_V;
    case XK_W:
    case XK_w:
      return VKEY_W;
    case XK_X:
    case XK_x:
      return VKEY_X;
    case XK_Y:
    case XK_y:
      return VKEY_Y;
    case XK_Z:
    case XK_z:
      return VKEY_Z;

    case XK_0:
    case XK_1:
    case XK_2:
    case XK_3:
    case XK_4:
    case XK_5:
    case XK_6:
    case XK_7:
    case XK_8:
    case XK_9:
      return VKEY_0 + (keysym - XK_0);

    case XK_parenright:
      return VKEY_0;
    case XK_exclam:
      return VKEY_1;
    case XK_at:
      return VKEY_2;
    case XK_numbersign:
      return VKEY_3;
    case XK_dollar:
      return VKEY_4;
    case XK_percent:
      return VKEY_5;
    case XK_asciicircum:
      return VKEY_6;
    case XK_ampersand:
      return VKEY_7;
    case XK_asterisk:
      return VKEY_8;
    case XK_parenleft:
      return VKEY_9;

    case XK_KP_0:
    case XK_KP_1:
    case XK_KP_2:
    case XK_KP_3:
    case XK_KP_4:
    case XK_KP_5:
    case XK_KP_6:
    case XK_KP_7:
    case XK_KP_8:
    case XK_KP_9:
      return VKEY_NUMPAD0 + (keysym - XK_KP_0);

    case XK_multiply:
    case XK_KP_Multiply:
      return VKEY_MULTIPLY;
    case XK_KP_Add:
      return VKEY_ADD;
    case XK_KP_Separator:
      return VKEY_SEPARATOR;
    case XK_KP_Subtract:
      return VKEY_SUBTRACT;
    case XK_KP_Decimal:
      return VKEY_DECIMAL;
    case XK_KP_Divide:
      return VKEY_DIVIDE;
    case XK_KP_Equal:
    case XK_equal:
    case XK_plus:
      return VKEY_OEM_PLUS;
    case XK_comma:
    case XK_less:
      return VKEY_OEM_COMMA;
    case XK_minus:
    case XK_underscore:
      return VKEY_OEM_MINUS;
    case XK_greater:
    case XK_period:
      return VKEY_OEM_PERIOD;
    case XK_colon:
    case XK_semicolon:
      return VKEY_OEM_1;
    case XK_question:
    case XK_slash:
      return VKEY_OEM_2;
    case XK_asciitilde:
    case XK_quoteleft:
      return VKEY_OEM_3;
    case XK_bracketleft:
    case XK_braceleft:
      return VKEY_OEM_4;
    case XK_backslash:
    case XK_bar:
      return VKEY_OEM_5;
    case XK_bracketright:
    case XK_braceright:
      return VKEY_OEM_6;
    case XK_quoteright:
    case XK_quotedbl:
      return VKEY_OEM_7;
    case XK_ISO_Level5_Shift:
      return VKEY_OEM_8;
    case XK_Shift_L:
    case XK_Shift_R:
      return VKEY_SHIFT;
    case XK_Control_L:
    case XK_Control_R:
      return VKEY_CONTROL;
    case XK_Meta_L:
    case XK_Meta_R:
    case XK_Alt_L:
    case XK_Alt_R:
      return VKEY_MENU;
    case XK_ISO_Level3_Shift:
      return VKEY_ALTGR;
    case XK_Multi_key:
      return VKEY_COMPOSE;
    case XK_Pause:
      return VKEY_PAUSE;
    case XK_Caps_Lock:
      return VKEY_CAPITAL;
    case XK_Num_Lock:
      return VKEY_NUMLOCK;
    case XK_Scroll_Lock:
      return VKEY_SCROLL;
    case XK_Select:
      return VKEY_SELECT;
    case XK_Print:
      return VKEY_PRINT;
    case XK_Execute:
      return VKEY_EXECUTE;
    case XK_Insert:
    case XK_KP_Insert:
      return VKEY_INSERT;
    case XK_Help:
      return VKEY_HELP;
    case XK_Super_L:
      return VKEY_LWIN;
    case XK_Super_R:
      return VKEY_RWIN;
    case XK_Menu:
      return VKEY_APPS;
    case XK_F1:
    case XK_F2:
    case XK_F3:
    case XK_F4:
    case XK_F5:
    case XK_F6:
    case XK_F7:
    case XK_F8:
    case XK_F9:
    case XK_F10:
    case XK_F11:
    case XK_F12:
    case XK_F13:
    case XK_F14:
    case XK_F15:
    case XK_F16:
    case XK_F17:
    case XK_F18:
    case XK_F19:
    case XK_F20:
    case XK_F21:
    case XK_F22:
    case XK_F23:
    case XK_F24:
      return VKEY_F1 + (keysym - XK_F1);
    case XK_KP_F1:
    case XK_KP_F2:
    case XK_KP_F3:
    case XK_KP_F4:
      return VKEY_F1 + (keysym - XK_KP_F1);

    case XK_guillemotleft:
    case XK_guillemotright:
    case XK_degree:
    // In the case of canadian multilingual keyboard layout, VKEY_OEM_102 is
    // assigned to ugrave key.
    case XK_ugrave:
    case XK_Ugrave:
    case XK_brokenbar:
      return VKEY_OEM_102;  // international backslash key in 102 keyboard.

    // When evdev is in use, /usr/share/X11/xkb/symbols/inet maps F13-18 keys
    // to the special XF86XK symbols to support Microsoft Ergonomic keyboards:
    // https://bugs.freedesktop.org/show_bug.cgi?id=5783
    // In Chrome, we map these X key symbols back to F13-18 since we don't have
    // VKEYs for these XF86XK symbols.
    case XF86XK_Tools:
      return VKEY_F13;
    case XF86XK_Launch5:
      return VKEY_F14;
    case XF86XK_Launch6:
      return VKEY_F15;
    case XF86XK_Launch7:
      return VKEY_F16;
    case XF86XK_Launch8:
      return VKEY_F17;
    case XF86XK_Launch9:
      return VKEY_F18;
    case XF86XK_Refresh:
    case XF86XK_History:
    case XF86XK_OpenURL:
    case XF86XK_AddFavorite:
    case XF86XK_Go:
    case XF86XK_ZoomIn:
    case XF86XK_ZoomOut:
      // ui::AcceleratorGtk tries to convert the XF86XK_ keysyms on Chrome
      // startup. It's safe to return VKEY_UNKNOWN here since ui::AcceleratorGtk
      // also checks a Gdk keysym. http://crbug.com/109843
      return VKEY_UNKNOWN;
    // For supporting multimedia buttons on a USB keyboard.
    case XF86XK_Back:
      return VKEY_BROWSER_BACK;
    case XF86XK_Forward:
      return VKEY_BROWSER_FORWARD;
    case XF86XK_Reload:
      return VKEY_BROWSER_REFRESH;
    case XF86XK_Stop:
      return VKEY_BROWSER_STOP;
    case XF86XK_Search:
      return VKEY_BROWSER_SEARCH;
    case XF86XK_Favorites:
      return VKEY_BROWSER_FAVORITES;
    case XF86XK_HomePage:
      return VKEY_BROWSER_HOME;
    case XF86XK_AudioMute:
      return VKEY_VOLUME_MUTE;
    case XF86XK_AudioLowerVolume:
      return VKEY_VOLUME_DOWN;
    case XF86XK_AudioRaiseVolume:
      return VKEY_VOLUME_UP;
    case XF86XK_AudioNext:
      return VKEY_MEDIA_NEXT_TRACK;
    case XF86XK_AudioPrev:
      return VKEY_MEDIA_PREV_TRACK;
    case XF86XK_AudioStop:
      return VKEY_MEDIA_STOP;
    case XF86XK_AudioPlay:
      return VKEY_MEDIA_PLAY_PAUSE;
    case XF86XK_Mail:
      return VKEY_MEDIA_LAUNCH_MAIL;
    case XF86XK_LaunchA:  // F3 on an Apple keyboard.
      return VKEY_MEDIA_LAUNCH_APP1;
    case XF86XK_LaunchB:  // F4 on an Apple keyboard.
    case XF86XK_Calculator:
      return VKEY_MEDIA_LAUNCH_APP2;
    case XF86XK_WLAN:
      return VKEY_WLAN;
    case XF86XK_PowerOff:
      return VKEY_POWER;
    case XF86XK_MonBrightnessDown:
      return VKEY_BRIGHTNESS_DOWN;
    case XF86XK_MonBrightnessUp:
      return VKEY_BRIGHTNESS_UP;
    case XF86XK_KbdBrightnessDown:
      return VKEY_KBD_BRIGHTNESS_DOWN;
    case XF86XK_KbdBrightnessUp:
      return VKEY_KBD_BRIGHTNESS_UP;

    // TODO(sad): some keycodes are still missing.
  }
  return VKEY_UNKNOWN;
}

// From content/browser/renderer_host/input/web_input_event_util_posix.cc.
KeyboardCode GdkEventToWindowsKeyCode(const Evas_Event_Key_Down* event) {
  static const unsigned int kHardwareCodeToGDKKeyval[] = {
    0,                 // 0x00:
    0,                 // 0x01:
    0,                 // 0x02:
    0,                 // 0x03:
    0,                 // 0x04:
    0,                 // 0x05:
    0,                 // 0x06:
    0,                 // 0x07:
    0,                 // 0x08:
    0,                 // 0x09: XK_Escape
    XK_1,             // 0x0A: XK_1
    XK_2,             // 0x0B: XK_2
    XK_3,             // 0x0C: XK_3
    XK_4,             // 0x0D: XK_4
    XK_5,             // 0x0E: XK_5
    XK_6,             // 0x0F: XK_6
    XK_7,             // 0x10: XK_7
    XK_8,             // 0x11: XK_8
    XK_9,             // 0x12: XK_9
    XK_0,             // 0x13: XK_0
    XK_minus,         // 0x14: XK_minus
    XK_equal,         // 0x15: XK_equal
    0,                 // 0x16: XK_BackSpace
    0,                 // 0x17: XK_Tab
    XK_q,             // 0x18: XK_q
    XK_w,             // 0x19: XK_w
    XK_e,             // 0x1A: XK_e
    XK_r,             // 0x1B: XK_r
    XK_t,             // 0x1C: XK_t
    XK_y,             // 0x1D: XK_y
    XK_u,             // 0x1E: XK_u
    XK_i,             // 0x1F: XK_i
    XK_o,             // 0x20: XK_o
    XK_p,             // 0x21: XK_p
    XK_bracketleft,   // 0x22: XK_bracketleft
    XK_bracketright,  // 0x23: XK_bracketright
    0,                 // 0x24: XK_Return
    0,                 // 0x25: XK_Control_L
    XK_a,             // 0x26: XK_a
    XK_s,             // 0x27: XK_s
    XK_d,             // 0x28: XK_d
    XK_f,             // 0x29: XK_f
    XK_g,             // 0x2A: XK_g
    XK_h,             // 0x2B: XK_h
    XK_j,             // 0x2C: XK_j
    XK_k,             // 0x2D: XK_k
    XK_l,             // 0x2E: XK_l
    XK_semicolon,     // 0x2F: XK_semicolon
    XK_apostrophe,    // 0x30: XK_apostrophe
    XK_grave,         // 0x31: XK_grave
    0,                 // 0x32: XK_Shift_L
    XK_backslash,     // 0x33: XK_backslash
    XK_z,             // 0x34: XK_z
    XK_x,             // 0x35: XK_x
    XK_c,             // 0x36: XK_c
    XK_v,             // 0x37: XK_v
    XK_b,             // 0x38: XK_b
    XK_n,             // 0x39: XK_n
    XK_m,             // 0x3A: XK_m
    XK_comma,         // 0x3B: XK_comma
    XK_period,        // 0x3C: XK_period
    XK_slash,         // 0x3D: XK_slash
    0,                 // 0x3E: XK_Shift_R
    0,                 // 0x3F:
    0,                 // 0x40:
    0,                 // 0x41:
    0,                 // 0x42:
    0,                 // 0x43:
    0,                 // 0x44:
    0,                 // 0x45:
    0,                 // 0x46:
    0,                 // 0x47:
    0,                 // 0x48:
    0,                 // 0x49:
    0,                 // 0x4A:
    0,                 // 0x4B:
    0,                 // 0x4C:
    0,                 // 0x4D:
    0,                 // 0x4E:
    0,                 // 0x4F:
    0,                 // 0x50:
    0,                 // 0x51:
    0,                 // 0x52:
    0,                 // 0x53:
    0,                 // 0x54:
    0,                 // 0x55:
    0,                 // 0x56:
    0,                 // 0x57:
    0,                 // 0x58:
    0,                 // 0x59:
    0,                 // 0x5A:
    0,                 // 0x5B:
    0,                 // 0x5C:
    0,                 // 0x5D:
    0,                 // 0x5E:
    0,                 // 0x5F:
    0,                 // 0x60:
    0,                 // 0x61:
    0,                 // 0x62:
    0,                 // 0x63:
    0,                 // 0x64:
    0,                 // 0x65:
    0,                 // 0x66:
    0,                 // 0x67:
    0,                 // 0x68:
    0,                 // 0x69:
    0,                 // 0x6A:
    0,                 // 0x6B:
    0,                 // 0x6C:
    0,                 // 0x6D:
    0,                 // 0x6E:
    0,                 // 0x6F:
    0,                 // 0x70:
    0,                 // 0x71:
    0,                 // 0x72:
    XK_Super_L,       // 0x73: XK_Super_L
    XK_Super_R,       // 0x74: XK_Super_R
  };

  // |windows_key_code| has to include a valid virtual-key code even when we
  // use non-US layouts, e.g. even when we type an 'A' key of a US keyboard
  // on the Hebrew layout, |windows_key_code| should be VK_A.
  // On the other hand, |event->keyval| value depends on the current
  // GdkKeymap object, i.e. when we type an 'A' key of a US keyboard on
  // the Hebrew layout, |event->keyval| becomes XK_hebrew_shin and this
  // KeyboardCodeFromXKeysym() call returns 0.
  // To improve compatibilty with Windows, we use |event->hardware_keycode|
  // for retrieving its Windows key-code for the keys when the
  // WebCore::windows_key_codeForEvent() call returns 0.
  // We shouldn't use |event->hardware_keycode| for keys that GdkKeymap
  // objects cannot change because |event->hardware_keycode| doesn't change
  // even when we change the layout options, e.g. when we swap a control
  // key and a caps-lock key, GTK doesn't swap their
  // |event->hardware_keycode| values but swap their |event->keyval| values.
  KeyboardCode windows_key_code =
      KeyboardCodeFromXKeysym(ecore_x_keysym_get(event->key));
  if (windows_key_code)
    return windows_key_code;

  if (event->keycode < EINA_C_ARRAY_LENGTH(kHardwareCodeToGDKKeyval)) {
    int keyval = kHardwareCodeToGDKKeyval[event->keycode];
    if (keyval)
      return KeyboardCodeFromXKeysym(keyval);
  }

  // This key is one that keyboard-layout drivers cannot change.
  // Use |event->keyval| to retrieve its |windows_key_code| value.
  return KeyboardCodeFromXKeysym(ecore_x_keysym_get(event->key));
}

// From content/browser/renderer_host/input/web_input_event_util_posix.cc.
KeyboardCode GetWindowsKeyCodeWithoutLocation(KeyboardCode key_code) {
  switch (key_code) {
    case VKEY_LCONTROL:
    case VKEY_RCONTROL:
      return VKEY_CONTROL;
    case VKEY_LSHIFT:
    case VKEY_RSHIFT:
    return VKEY_SHIFT;
    case VKEY_LMENU:
    case VKEY_RMENU:
      return VKEY_MENU;
    default:
      return key_code;
  }
}

// From content/browser/renderer_host/input/web_input_event_builders_gtk.cc.
// Gets the corresponding control character of a specified key code. See:
// http://en.wikipedia.org/wiki/Control_characters
// We emulate Windows behavior here.
int GetControlCharacter(KeyboardCode windows_key_code, int shift) {
  if (windows_key_code >= VKEY_A && windows_key_code <= VKEY_Z) {
    // ctrl-A ~ ctrl-Z map to \x01 ~ \x1A
    return windows_key_code - VKEY_A + 1;
  }
  if (shift) {
    // following graphics chars require shift key to input.
    switch (windows_key_code) {
      // ctrl-@ maps to \x00 (Null byte)
      case VKEY_2:
        return 0;
      // ctrl-^ maps to \x1E (Record separator, Information separator two)
      case VKEY_6:
        return 0x1E;
      // ctrl-_ maps to \x1F (Unit separator, Information separator one)
      case VKEY_OEM_MINUS:
        return 0x1F;
      // Returns 0 for all other keys to avoid inputting unexpected chars.
      default:
        return 0;
    }
  } else {
    switch (windows_key_code) {
      // ctrl-[ maps to \x1B (Escape)
      case VKEY_OEM_4:
        return 0x1B;
      // ctrl-\ maps to \x1C (File separator, Information separator four)
      case VKEY_OEM_5:
        return 0x1C;
      // ctrl-] maps to \x1D (Group separator, Information separator three)
      case VKEY_OEM_6:
        return 0x1D;
      // ctrl-Enter maps to \x0A (Line feed)
      case VKEY_RETURN:
        return 0x0A;
      // Returns 0 for all other keys to avoid inputting unexpected chars.
      default:
        return 0;
    }
  }
}