PRUint32
KeymapWrapper::GetCharCodeFor(const GdkEventKey *aGdkKeyEvent,
guint aModifierState,
gint aGroup)
{
guint keyval;
if (!gdk_keymap_translate_keyboard_state(mGdkKeymap,
aGdkKeyEvent->hardware_keycode,
GdkModifierType(aModifierState),
aGroup, &keyval, NULL, NULL, NULL)) {
return 0;
}
GdkEventKey tmpEvent = *aGdkKeyEvent;
tmpEvent.state = aModifierState;
tmpEvent.keyval = keyval;
tmpEvent.group = aGroup;
return GetCharCodeFor(&tmpEvent);
}
KeyNameIndex
KeymapWrapper::ComputeDOMKeyNameIndex(const GdkEventKey* aGdkKeyEvent)
{
switch (aGdkKeyEvent->keyval) {
#define NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, aKeyNameIndex) \
case aNativeKey: return aKeyNameIndex;
#include "NativeKeyToDOMKeyName.h"
#undef NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX
default:
break;
}
uint32_t ch = GetCharCodeFor(aGdkKeyEvent);
return ch ? KEY_NAME_INDEX_PrintableKey : KEY_NAME_INDEX_Unidentified;
}
/* static */ PRUint32
KeymapWrapper::ComputeDOMKeyCode(const GdkEventKey* aGdkKeyEvent)
{
// If the keyval indicates it's a modifier key, we should use unshifted
// key's modifier keyval.
guint keyval = aGdkKeyEvent->keyval;
if (GetModifierForGDKKeyval(keyval)) {
// But if the keyval without modifiers isn't a modifier key, we
// shouldn't use it. E.g., Japanese keyboard layout's
// Shift + Eisu-Toggle key is CapsLock. This is an actual rare case,
// Windows uses different keycode for a physical key for different
// shift key state.
guint keyvalWithoutModifier = GetGDKKeyvalWithoutModifier(aGdkKeyEvent);
if (GetModifierForGDKKeyval(keyvalWithoutModifier)) {
keyval = keyvalWithoutModifier;
}
return GetDOMKeyCodeFromKeyPairs(keyval);
}
// If the key isn't printable, let's look at the key pairs.
PRUint32 charCode = GetCharCodeFor(aGdkKeyEvent);
if (!charCode) {
// Always use unshifted keycode for the non-printable key.
// XXX It might be better to decide DOM keycode from all keyvals of
// the hardware keycode. However, I think that it's too excessive.
guint keyvalWithoutModifier = GetGDKKeyvalWithoutModifier(aGdkKeyEvent);
PRUint32 DOMKeyCode = GetDOMKeyCodeFromKeyPairs(keyvalWithoutModifier);
if (!DOMKeyCode) {
// If the unshifted keyval couldn't be mapped to a DOM keycode,
// we should fallback to legacy logic, so, we should recompute with
// the keyval with aGdkKeyEvent.
DOMKeyCode = GetDOMKeyCodeFromKeyPairs(keyval);
}
return DOMKeyCode;
}
// printable numpad keys should be resolved here.
switch (keyval) {
case GDK_KP_Multiply: return NS_VK_MULTIPLY;
case GDK_KP_Add: return NS_VK_ADD;
case GDK_KP_Separator: return NS_VK_SEPARATOR;
case GDK_KP_Subtract: return NS_VK_SUBTRACT;
case GDK_KP_Decimal: return NS_VK_DECIMAL;
case GDK_KP_Divide: return NS_VK_DIVIDE;
case GDK_KP_0: return NS_VK_NUMPAD0;
case GDK_KP_1: return NS_VK_NUMPAD1;
case GDK_KP_2: return NS_VK_NUMPAD2;
case GDK_KP_3: return NS_VK_NUMPAD3;
case GDK_KP_4: return NS_VK_NUMPAD4;
case GDK_KP_5: return NS_VK_NUMPAD5;
case GDK_KP_6: return NS_VK_NUMPAD6;
case GDK_KP_7: return NS_VK_NUMPAD7;
case GDK_KP_8: return NS_VK_NUMPAD8;
case GDK_KP_9: return NS_VK_NUMPAD9;
}
KeymapWrapper* keymapWrapper = GetInstance();
// Ignore all modifier state except NumLock.
guint baseState =
(aGdkKeyEvent->state & keymapWrapper->GetModifierMask(NUM_LOCK));
// Basically, we should use unmodified character for deciding our keyCode.
PRUint32 unmodifiedChar =
keymapWrapper->GetCharCodeFor(aGdkKeyEvent, baseState,
aGdkKeyEvent->group);
if (IsBasicLatinLetterOrNumeral(unmodifiedChar)) {
// If the unmodified character is an ASCII alphabet or an ASCII
// numeric, it's the best hint for deciding our keyCode.
return WidgetUtils::ComputeKeyCodeFromChar(unmodifiedChar);
}
// If the unmodified character is not an ASCII character, that means we
// couldn't find the hint. We should reset it.
if (unmodifiedChar > 0x7F) {
unmodifiedChar = 0;
}
// Retry with shifted keycode.
guint shiftState = (baseState | keymapWrapper->GetModifierMask(SHIFT));
PRUint32 shiftedChar =
keymapWrapper->GetCharCodeFor(aGdkKeyEvent, shiftState,
aGdkKeyEvent->group);
if (IsBasicLatinLetterOrNumeral(shiftedChar)) {
// A shifted character can be an ASCII alphabet on Hebrew keyboard
// layout. And also shifted character can be an ASCII numeric on
// AZERTY keyboad layout. Then, it's a good hint for deciding our
// keyCode.
return WidgetUtils::ComputeKeyCodeFromChar(shiftedChar);
}
// If the shifted unmodified character isn't an ASCII character, we should
// discard it too.
if (shiftedChar > 0x7F) {
shiftedChar = 0;
}
// If current keyboard layout isn't ASCII alphabet inputtable layout,
// look for ASCII alphabet inputtable keyboard layout. If the key
// inputs an ASCII alphabet or an ASCII numeric, we should use it
// for deciding our keyCode.
// Note that it's important not to use alternative keyboard layout for ASCII
// alphabet inputabble keyboard layout because the keycode for the key with
// alternative keyboard layout may conflict with another key on current
// keyboard layout.
if (!keymapWrapper->IsLatinGroup(aGdkKeyEvent->group)) {
gint minGroup = keymapWrapper->GetFirstLatinGroup();
if (minGroup >= 0) {
PRUint32 unmodCharLatin =
keymapWrapper->GetCharCodeFor(aGdkKeyEvent, baseState,
minGroup);
if (IsBasicLatinLetterOrNumeral(unmodCharLatin)) {
// If the unmodified character is an ASCII alphabet or
// an ASCII numeric, we should use it for the keyCode.
return WidgetUtils::ComputeKeyCodeFromChar(unmodCharLatin);
}
PRUint32 shiftedCharLatin =
keymapWrapper->GetCharCodeFor(aGdkKeyEvent, shiftState,
minGroup);
if (IsBasicLatinLetterOrNumeral(shiftedCharLatin)) {
// If the shifted character is an ASCII alphabet or an ASCII
// numeric, we should use it for the keyCode.
return WidgetUtils::ComputeKeyCodeFromChar(shiftedCharLatin);
}
}
}
// If unmodified character is in ASCII range, use it. Otherwise, use
// shifted character.
if (!unmodifiedChar && !shiftedChar) {
return 0;
}
return WidgetUtils::ComputeKeyCodeFromChar(
unmodifiedChar ? unmodifiedChar : shiftedChar);
}
for (PRUint32 i = 0; i < ArrayLength(kKeyPairs); i++) {
if (kKeyPairs[i].GDKKeyval == aGdkKeyval) {
return kKeyPairs[i].DOMKeyCode;
}
}
return 0;
}
void
KeymapWrapper::InitKeypressEvent(nsKeyEvent& aKeyEvent,
GdkEventKey* aGdkKeyEvent)
{
NS_ENSURE_TRUE(aKeyEvent.message == NS_KEY_PRESS, );
aKeyEvent.charCode = GetCharCodeFor(aGdkKeyEvent);
if (!aKeyEvent.charCode) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, "
"keyCode=0x%02X, charCode=0x%08X",
this, aKeyEvent.keyCode, aKeyEvent.charCode));
return;
}
// If the event causes inputting a character, keyCode must be zero.
aKeyEvent.keyCode = 0;
// If Ctrl or Alt or Meta is pressed, we need to append the key details
// for handling shortcut key. Otherwise, we have no additional work.
if (!aKeyEvent.IsControl() && !aKeyEvent.IsAlt() && !aKeyEvent.IsMeta()) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
void
KeymapWrapper::InitKeypressEvent(nsKeyEvent& aKeyEvent,
GdkEventKey* aGdkKeyEvent)
{
NS_ENSURE_TRUE_VOID(aKeyEvent.message == NS_KEY_PRESS);
aKeyEvent.charCode = GetCharCodeFor(aGdkKeyEvent);
if (!aKeyEvent.charCode) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, "
"keyCode=0x%02X, charCode=0x%08X",
this, aKeyEvent.keyCode, aKeyEvent.charCode));
return;
}
// If the event causes inputting a character, keyCode must be zero.
aKeyEvent.keyCode = 0;
// If Ctrl or Alt or Meta or OS is pressed, we need to append the key
// details for handling shortcut key. Otherwise, we have no additional
// work.
if (!aKeyEvent.IsControl() && !aKeyEvent.IsAlt() &&
!aKeyEvent.IsMeta() && !aKeyEvent.IsOS()) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, "
"keyCode=0x%02X, charCode=0x%08X",
this, aKeyEvent.keyCode, aKeyEvent.charCode));
return;
}
gint level = GetKeyLevel(aGdkKeyEvent);
if (level != 0 && level != 1) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, "
"keyCode=0x%02X, charCode=0x%08X, level=%d",
this, aKeyEvent.keyCode, aKeyEvent.charCode, level));
return;
}
guint baseState = aGdkKeyEvent->state &
~(GetModifierMask(SHIFT) | GetModifierMask(CTRL) |
GetModifierMask(ALT) | GetModifierMask(META) |
GetModifierMask(SUPER) | GetModifierMask(HYPER));
// We shold send both shifted char and unshifted char, all keyboard layout
// users can use all keys. Don't change event.charCode. On some keyboard
// layouts, Ctrl/Alt/Meta keys are used for inputting some characters.
nsAlternativeCharCode altCharCodes(0, 0);
// unshifted charcode of current keyboard layout.
altCharCodes.mUnshiftedCharCode =
GetCharCodeFor(aGdkKeyEvent, baseState, aGdkKeyEvent->group);
bool isLatin = (altCharCodes.mUnshiftedCharCode <= 0xFF);
// shifted charcode of current keyboard layout.
altCharCodes.mShiftedCharCode =
GetCharCodeFor(aGdkKeyEvent,
baseState | GetModifierMask(SHIFT),
aGdkKeyEvent->group);
isLatin = isLatin && (altCharCodes.mShiftedCharCode <= 0xFF);
if (altCharCodes.mUnshiftedCharCode || altCharCodes.mShiftedCharCode) {
aKeyEvent.alternativeCharCodes.AppendElement(altCharCodes);
}
bool needLatinKeyCodes = !isLatin;
if (!needLatinKeyCodes) {
needLatinKeyCodes =
(IS_ASCII_ALPHABETICAL(altCharCodes.mUnshiftedCharCode) !=
IS_ASCII_ALPHABETICAL(altCharCodes.mShiftedCharCode));
}
// If current keyboard layout can input Latin characters, we don't need
// more information.
if (!needLatinKeyCodes) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, keyCode=0x%02X, "
"charCode=0x%08X, level=%d, altCharCodes={ "
"mUnshiftedCharCode=0x%08X, mShiftedCharCode=0x%08X }",
this, aKeyEvent.keyCode, aKeyEvent.charCode, level,
altCharCodes.mUnshiftedCharCode, altCharCodes.mShiftedCharCode));
return;
}
// Next, find Latin inputtable keyboard layout.
gint minGroup = GetFirstLatinGroup();
if (minGroup < 0) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, "
"Latin keyboard layout isn't found: "
"keyCode=0x%02X, charCode=0x%08X, level=%d, "
"altCharCodes={ mUnshiftedCharCode=0x%08X, "
"mShiftedCharCode=0x%08X }",
this, aKeyEvent.keyCode, aKeyEvent.charCode, level,
altCharCodes.mUnshiftedCharCode, altCharCodes.mShiftedCharCode));
return;
}
nsAlternativeCharCode altLatinCharCodes(0, 0);
uint32_t unmodifiedCh =
aKeyEvent.IsShift() ? altCharCodes.mShiftedCharCode :
altCharCodes.mUnshiftedCharCode;
// unshifted charcode of found keyboard layout.
uint32_t ch = GetCharCodeFor(aGdkKeyEvent, baseState, minGroup);
altLatinCharCodes.mUnshiftedCharCode =
IsBasicLatinLetterOrNumeral(ch) ? ch : 0;
// shifted charcode of found keyboard layout.
ch = GetCharCodeFor(aGdkKeyEvent,
baseState | GetModifierMask(SHIFT),
minGroup);
altLatinCharCodes.mShiftedCharCode =
IsBasicLatinLetterOrNumeral(ch) ? ch : 0;
if (altLatinCharCodes.mUnshiftedCharCode ||
altLatinCharCodes.mShiftedCharCode) {
aKeyEvent.alternativeCharCodes.AppendElement(altLatinCharCodes);
}
// If the charCode is not Latin, and the level is 0 or 1, we should
// replace the charCode to Latin char if Alt and Meta keys are not
// pressed. (Alt should be sent the localized char for accesskey
// like handling of Web Applications.)
ch = aKeyEvent.IsShift() ? altLatinCharCodes.mShiftedCharCode :
altLatinCharCodes.mUnshiftedCharCode;
if (ch && !(aKeyEvent.IsAlt() || aKeyEvent.IsMeta()) &&
aKeyEvent.charCode == unmodifiedCh) {
aKeyEvent.charCode = ch;
}
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeypressEvent, "
"keyCode=0x%02X, charCode=0x%08X, level=%d, minGroup=%d, "
"altCharCodes={ mUnshiftedCharCode=0x%08X, "
"mShiftedCharCode=0x%08X } "
"altLatinCharCodes={ mUnshiftedCharCode=0x%08X, "
"mShiftedCharCode=0x%08X }",
this, aKeyEvent.keyCode, aKeyEvent.charCode, level, minGroup,
altCharCodes.mUnshiftedCharCode, altCharCodes.mShiftedCharCode,
altLatinCharCodes.mUnshiftedCharCode,
altLatinCharCodes.mShiftedCharCode));
}
