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gecko/widget/gtk2/nsGtkKeyUtils.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "prlog.h"
#include "nsGtkKeyUtils.h"
#include <gdk/gdkkeysyms.h>
#ifndef GDK_Sleep
#define GDK_Sleep 0x1008ff2f
#endif
#include <gdk/gdk.h>
#ifdef MOZ_X11
#include <gdk/gdkx.h>
#endif /* MOZ_X11 */
#include "nsGUIEvent.h"
#include "WidgetUtils.h"
#include "keysym2ucs.h"
#ifdef PR_LOGGING
PRLogModuleInfo* gKeymapWrapperLog = nsnull;
#endif // PR_LOGGING
#include "mozilla/Util.h"
namespace mozilla {
namespace widget {
struct KeyPair {
PRUint32 DOMKeyCode;
guint GDKKeyval;
};
#define IS_ASCII_ALPHABETICAL(key) \
((('a' <= key) && (key <= 'z')) || (('A' <= key) && (key <= 'Z')))
//
// Netscape keycodes are defined in widget/public/nsGUIEvent.h
// GTK keycodes are defined in <gdk/gdkkeysyms.h>
//
static const KeyPair kKeyPairs[] = {
{ NS_VK_CANCEL, GDK_Cancel },
{ NS_VK_BACK, GDK_BackSpace },
{ NS_VK_TAB, GDK_Tab },
{ NS_VK_TAB, GDK_ISO_Left_Tab },
{ NS_VK_CLEAR, GDK_Clear },
{ NS_VK_RETURN, GDK_Return },
{ NS_VK_SHIFT, GDK_Shift_L },
{ NS_VK_SHIFT, GDK_Shift_R },
{ NS_VK_CONTROL, GDK_Control_L },
{ NS_VK_CONTROL, GDK_Control_R },
{ NS_VK_ALT, GDK_Alt_L },
{ NS_VK_ALT, GDK_Alt_R },
// NS_VK_META is used for Command key of Mac. It's a modifier key for
// shortcut keys like Ctrl key on GTK or Windows. So, it's really different
// from GTK's META key, we shouldn't use it on GTK.
// { NS_VK_META, GDK_Meta_L },
// { NS_VK_META, GDK_Meta_R },
// Assume that Super or Hyper is always mapped to physical Win key.
{ NS_VK_WIN, GDK_Super_L },
{ NS_VK_WIN, GDK_Super_R },
{ NS_VK_WIN, GDK_Hyper_L },
{ NS_VK_WIN, GDK_Hyper_R },
// GTK's AltGraph key is similar to Mac's Option (Alt) key. However,
// unfortunately, browsers on Mac are using NS_VK_ALT for it even though
// it's really different from Alt key on Windows.
// On the other hand, GTK's AltGrapsh keys are really different from
// Alt key. However, there is no AltGrapsh key on Windows. On Windows,
// both Ctrl and Alt keys are pressed internally when AltGr key is pressed.
// For some languages' users, AltGraph key is important, so, web
// applications on such locale may want to know AltGraph key press.
// Therefore, we should map AltGr keycode for them only on GTK.
{ NS_VK_ALTGR, GDK_ISO_Level3_Shift },
{ NS_VK_ALTGR, GDK_Mode_switch },
{ NS_VK_PAUSE, GDK_Pause },
{ NS_VK_CAPS_LOCK, GDK_Caps_Lock },
{ NS_VK_KANA, GDK_Kana_Lock },
{ NS_VK_KANA, GDK_Kana_Shift },
{ NS_VK_HANGUL, GDK_Hangul },
// { NS_VK_JUNJA, GDK_XXX },
// { NS_VK_FINAL, GDK_XXX },
{ NS_VK_HANJA, GDK_Hangul_Hanja },
{ NS_VK_KANJI, GDK_Kanji },
{ NS_VK_ESCAPE, GDK_Escape },
{ NS_VK_CONVERT, GDK_Henkan },
{ NS_VK_NONCONVERT, GDK_Muhenkan },
// { NS_VK_ACCEPT, GDK_XXX },
{ NS_VK_MODECHANGE, GDK_Mode_switch },
{ NS_VK_SPACE, GDK_space },
{ NS_VK_PAGE_UP, GDK_Page_Up },
{ NS_VK_PAGE_DOWN, GDK_Page_Down },
{ NS_VK_END, GDK_End },
{ NS_VK_HOME, GDK_Home },
{ NS_VK_LEFT, GDK_Left },
{ NS_VK_UP, GDK_Up },
{ NS_VK_RIGHT, GDK_Right },
{ NS_VK_DOWN, GDK_Down },
{ NS_VK_SELECT, GDK_Select },
{ NS_VK_PRINT, GDK_Print },
{ NS_VK_EXECUTE, GDK_Execute },
{ NS_VK_PRINTSCREEN, GDK_Print },
{ NS_VK_INSERT, GDK_Insert },
{ NS_VK_DELETE, GDK_Delete },
{ NS_VK_HELP, GDK_Help },
// keypad keys
{ NS_VK_LEFT, GDK_KP_Left },
{ NS_VK_RIGHT, GDK_KP_Right },
{ NS_VK_UP, GDK_KP_Up },
{ NS_VK_DOWN, GDK_KP_Down },
{ NS_VK_PAGE_UP, GDK_KP_Page_Up },
// Not sure what these are
//{ NS_VK_, GDK_KP_Prior },
//{ NS_VK_, GDK_KP_Next },
{ NS_VK_CLEAR, GDK_KP_Begin }, // Num-unlocked 5
{ NS_VK_PAGE_DOWN, GDK_KP_Page_Down },
{ NS_VK_HOME, GDK_KP_Home },
{ NS_VK_END, GDK_KP_End },
{ NS_VK_INSERT, GDK_KP_Insert },
{ NS_VK_DELETE, GDK_KP_Delete },
{ NS_VK_RETURN, GDK_KP_Enter },
{ NS_VK_NUM_LOCK, GDK_Num_Lock },
{ NS_VK_SCROLL_LOCK,GDK_Scroll_Lock },
// Function keys
{ NS_VK_F1, GDK_F1 },
{ NS_VK_F2, GDK_F2 },
{ NS_VK_F3, GDK_F3 },
{ NS_VK_F4, GDK_F4 },
{ NS_VK_F5, GDK_F5 },
{ NS_VK_F6, GDK_F6 },
{ NS_VK_F7, GDK_F7 },
{ NS_VK_F8, GDK_F8 },
{ NS_VK_F9, GDK_F9 },
{ NS_VK_F10, GDK_F10 },
{ NS_VK_F11, GDK_F11 },
{ NS_VK_F12, GDK_F12 },
{ NS_VK_F13, GDK_F13 },
{ NS_VK_F14, GDK_F14 },
{ NS_VK_F15, GDK_F15 },
{ NS_VK_F16, GDK_F16 },
{ NS_VK_F17, GDK_F17 },
{ NS_VK_F18, GDK_F18 },
{ NS_VK_F19, GDK_F19 },
{ NS_VK_F20, GDK_F20 },
{ NS_VK_F21, GDK_F21 },
{ NS_VK_F22, GDK_F22 },
{ NS_VK_F23, GDK_F23 },
{ NS_VK_F24, GDK_F24 },
// context menu key, keysym 0xff67, typically keycode 117 on 105-key (Microsoft)
// x86 keyboards, located between right 'Windows' key and right Ctrl key
{ NS_VK_CONTEXT_MENU, GDK_Menu },
{ NS_VK_SLEEP, GDK_Sleep },
};
// map Sun Keyboard special keysyms on to NS_VK keys
static const KeyPair kSunKeyPairs[] = {
{NS_VK_F11, 0x1005ff10 }, //Sun F11 key generates SunF36(0x1005ff10) keysym
{NS_VK_F12, 0x1005ff11 } //Sun F12 key generates SunF37(0x1005ff11) keysym
};
#define MOZ_MODIFIER_KEYS "MozKeymapWrapper"
KeymapWrapper* KeymapWrapper::sInstance = nsnull;
#ifdef PR_LOGGING
static const char* GetBoolName(bool aBool)
{
return aBool ? "TRUE" : "FALSE";
}
/* static */ const char*
KeymapWrapper::GetModifierName(Modifier aModifier)
{
switch (aModifier) {
case CAPS_LOCK: return "CapsLock";
case NUM_LOCK: return "NumLock";
case SCROLL_LOCK: return "ScrollLock";
case SHIFT: return "Shift";
case CTRL: return "Ctrl";
case ALT: return "Alt";
case SUPER: return "Super";
case HYPER: return "Hyper";
case META: return "Meta";
case ALTGR: return "AltGr";
case NOT_MODIFIER: return "NotModifier";
default: return "InvalidValue";
}
}
#endif // PR_LOGGING
/* static */ KeymapWrapper::Modifier
KeymapWrapper::GetModifierForGDKKeyval(guint aGdkKeyval)
{
switch (aGdkKeyval) {
case GDK_Caps_Lock: return CAPS_LOCK;
case GDK_Num_Lock: return NUM_LOCK;
case GDK_Scroll_Lock: return SCROLL_LOCK;
case GDK_Shift_L:
case GDK_Shift_R: return SHIFT;
case GDK_Control_L:
case GDK_Control_R: return CTRL;
case GDK_Alt_L:
case GDK_Alt_R: return ALT;
case GDK_Super_L:
case GDK_Super_R: return SUPER;
case GDK_Hyper_L:
case GDK_Hyper_R: return HYPER;
case GDK_Meta_L:
case GDK_Meta_R: return META;
case GDK_ISO_Level3_Shift:
case GDK_Mode_switch: return ALTGR;
default: return NOT_MODIFIER;
}
}
guint
KeymapWrapper::GetModifierMask(Modifier aModifier) const
{
switch (aModifier) {
case CAPS_LOCK:
return GDK_LOCK_MASK;
case NUM_LOCK:
return mModifierMasks[INDEX_NUM_LOCK];
case SCROLL_LOCK:
return mModifierMasks[INDEX_SCROLL_LOCK];
case SHIFT:
return GDK_SHIFT_MASK;
case CTRL:
return GDK_CONTROL_MASK;
case ALT:
return mModifierMasks[INDEX_ALT];
case SUPER:
return mModifierMasks[INDEX_SUPER];
case HYPER:
return mModifierMasks[INDEX_HYPER];
case META:
return mModifierMasks[INDEX_META];
case ALTGR:
return mModifierMasks[INDEX_ALTGR];
default:
return 0;
}
}
KeymapWrapper::ModifierKey*
KeymapWrapper::GetModifierKey(guint aHardwareKeycode)
{
for (PRUint32 i = 0; i < mModifierKeys.Length(); i++) {
ModifierKey& key = mModifierKeys[i];
if (key.mHardwareKeycode == aHardwareKeycode) {
return &key;
}
}
return nsnull;
}
/* static */ KeymapWrapper*
KeymapWrapper::GetInstance()
{
if (sInstance) {
sInstance->Init();
return sInstance;
}
sInstance = new KeymapWrapper();
return sInstance;
}
KeymapWrapper::KeymapWrapper() :
mInitialized(false), mGdkKeymap(gdk_keymap_get_default())
{
#ifdef PR_LOGGING
if (!gKeymapWrapperLog) {
gKeymapWrapperLog = PR_NewLogModule("KeymapWrapperWidgets");
}
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): Constructor, mGdkKeymap=%p",
this, mGdkKeymap));
#endif // PR_LOGGING
g_signal_connect(mGdkKeymap, "keys-changed",
(GCallback)OnKeysChanged, this);
// This is necessary for catching the destroying timing.
g_object_weak_ref(G_OBJECT(mGdkKeymap),
(GWeakNotify)OnDestroyKeymap, this);
Init();
}
void
KeymapWrapper::Init()
{
if (mInitialized) {
return;
}
mInitialized = true;
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): Init, mGdkKeymap=%p",
this, mGdkKeymap));
mModifierKeys.Clear();
memset(mModifierMasks, 0, sizeof(mModifierMasks));
InitBySystemSettings();
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): Init, CapsLock=0x%X, NumLock=0x%X, "
"ScrollLock=0x%X, AltGr=0x%X, Shift=0x%X, Ctrl=0x%X, Alt=0x%X, "
"Meta=0x%X, Super=0x%X, Hyper=0x%X",
this,
GetModifierMask(CAPS_LOCK), GetModifierMask(NUM_LOCK),
GetModifierMask(SCROLL_LOCK), GetModifierMask(ALTGR),
GetModifierMask(SHIFT), GetModifierMask(CTRL),
GetModifierMask(ALT), GetModifierMask(META),
GetModifierMask(SUPER), GetModifierMask(HYPER)));
}
void
KeymapWrapper::InitBySystemSettings()
{
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitBySystemSettings, mGdkKeymap=%p",
this, mGdkKeymap));
Display* display =
gdk_x11_display_get_xdisplay(gdk_display_get_default());
int min_keycode = 0;
int max_keycode = 0;
XDisplayKeycodes(display, &min_keycode, &max_keycode);
int keysyms_per_keycode = 0;
KeySym* xkeymap = XGetKeyboardMapping(display, min_keycode,
max_keycode - min_keycode + 1,
&keysyms_per_keycode);
if (!xkeymap) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitBySystemSettings, "
"Failed due to null xkeymap", this));
return;
}
XModifierKeymap* xmodmap = XGetModifierMapping(display);
if (!xmodmap) {
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitBySystemSettings, "
"Failed due to null xmodmap", this));
XFree(xkeymap);
return;
}
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitBySystemSettings, min_keycode=%d, "
"max_keycode=%d, keysyms_per_keycode=%d, max_keypermod=%d",
this, min_keycode, max_keycode, keysyms_per_keycode,
xmodmap->max_keypermod));
// The modifiermap member of the XModifierKeymap structure contains 8 sets
// of max_keypermod KeyCodes, one for each modifier in the order Shift,
// Lock, Control, Mod1, Mod2, Mod3, Mod4, and Mod5.
// Only nonzero KeyCodes have meaning in each set, and zero KeyCodes are
// ignored.
// Note that two or more modifiers may use one modifier flag. E.g.,
// on Ubuntu 10.10, Alt and Meta share the Mod1 in default settings.
// And also Super and Hyper share the Mod4.
const PRUint32 map_size = 8 * xmodmap->max_keypermod;
for (PRUint32 i = 0; i < map_size; i++) {
KeyCode keycode = xmodmap->modifiermap[i];
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitBySystemSettings, "
" i=%d, keycode=0x%08X",
this, i, keycode));
if (!keycode || keycode < min_keycode || keycode > max_keycode) {
continue;
}
ModifierKey* modifierKey = GetModifierKey(keycode);
if (!modifierKey) {
modifierKey = mModifierKeys.AppendElement(ModifierKey(keycode));
}
const KeySym* syms =
xkeymap + (keycode - min_keycode) * keysyms_per_keycode;
const PRUint32 bit = i / xmodmap->max_keypermod;
modifierKey->mMask |= 1 << bit;
for (PRInt32 j = 0; j < keysyms_per_keycode; j++) {
Modifier modifier = GetModifierForGDKKeyval(syms[j]);
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitBySystemSettings, "
" bit=%d, j=%d, syms[j]=%s(0x%X), modifier=%s",
this, bit, j, gdk_keyval_name(syms[j]), syms[j],
GetModifierName(modifier)));
ModifierIndex index;
switch (modifier) {
case NUM_LOCK:
index = INDEX_NUM_LOCK;
break;
case SCROLL_LOCK:
index = INDEX_SCROLL_LOCK;
break;
case ALT:
index = INDEX_ALT;
break;
case SUPER:
index = INDEX_SUPER;
break;
case HYPER:
index = INDEX_HYPER;
break;
case META:
index = INDEX_META;
break;
case ALTGR:
index = INDEX_ALTGR;
break;
default:
// NOTE: We always use GDK_SHIFT_MASK, GDK_CONTROL_MASK and
// GDK_LOCK_MASK for SHIFT, CTRL and CAPS_LOCK.
// This is standard manners of GTK application.
continue;
}
mModifierMasks[index] |= 1 << bit;
}
}
XFreeModifiermap(xmodmap);
XFree(xkeymap);
}
KeymapWrapper::~KeymapWrapper()
{
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): Destructor", this));
}
/* static */ void
KeymapWrapper::OnDestroyKeymap(KeymapWrapper* aKeymapWrapper,
GdkKeymap *aGdkKeymap)
{
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper: OnDestroyKeymap, aGdkKeymap=%p, aKeymapWrapper=%p",
aGdkKeymap, aKeymapWrapper));
MOZ_ASSERT(aKeymapWrapper == sInstance,
"Desroying unexpected instance");
delete sInstance;
sInstance = nsnull;
}
/* static */ void
KeymapWrapper::OnKeysChanged(GdkKeymap *aGdkKeymap,
KeymapWrapper* aKeymapWrapper)
{
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper: OnKeysChanged, aGdkKeymap=%p, aKeymapWrapper=%p",
aGdkKeymap, aKeymapWrapper));
MOZ_ASSERT(sInstance == aKeymapWrapper,
"This instance must be the singleton instance");
// We cannot reintialize here becasue we don't have GdkWindow which is using
// the GdkKeymap. We'll reinitialize it when next GetInstance() is called.
sInstance->mInitialized = false;
}
/* static */ guint
KeymapWrapper::GetCurrentModifierState()
{
GdkModifierType modifiers;
gdk_display_get_pointer(gdk_display_get_default(),
NULL, NULL, NULL, &modifiers);
return static_cast<guint>(modifiers);
}
/* static */ bool
KeymapWrapper::AreModifiersCurrentlyActive(Modifiers aModifiers)
{
guint modifierState = GetCurrentModifierState();
return AreModifiersActive(aModifiers, modifierState);
}
/* static */ bool
KeymapWrapper::AreModifiersActive(Modifiers aModifiers,
guint aModifierState)
{
NS_ENSURE_TRUE(aModifiers, false);
KeymapWrapper* keymapWrapper = GetInstance();
for (PRUint32 i = 0; i < sizeof(Modifier) * 8 && aModifiers; i++) {
Modifier modifier = static_cast<Modifier>(1 << i);
if (!(aModifiers & modifier)) {
continue;
}
if (!(aModifierState & keymapWrapper->GetModifierMask(modifier))) {
return false;
}
aModifiers &= ~modifier;
}
return true;
}
/* static */ void
KeymapWrapper::InitInputEvent(nsInputEvent& aInputEvent,
guint aModifierState)
{
KeymapWrapper* keymapWrapper = GetInstance();
aInputEvent.modifiers = 0;
// DOM Meta key should be TRUE only on Mac. We need to discuss this
// issue later.
if (keymapWrapper->AreModifiersActive(SHIFT, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_SHIFT;
}
if (keymapWrapper->AreModifiersActive(CTRL, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_CONTROL;
}
if (keymapWrapper->AreModifiersActive(ALT, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_ALT;
}
if (keymapWrapper->AreModifiersActive(SUPER, aModifierState) ||
keymapWrapper->AreModifiersActive(HYPER, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_OS;
}
if (keymapWrapper->AreModifiersActive(ALTGR, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_ALTGRAPH;
}
if (keymapWrapper->AreModifiersActive(CAPS_LOCK, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_CAPSLOCK;
}
if (keymapWrapper->AreModifiersActive(NUM_LOCK, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_NUMLOCK;
}
if (keymapWrapper->AreModifiersActive(SCROLL_LOCK, aModifierState)) {
aInputEvent.modifiers |= MODIFIER_SCROLLLOCK;
}
PR_LOG(gKeymapWrapperLog, PR_LOG_DEBUG,
("KeymapWrapper(%p): InitInputEvent, aModifierState=0x%08X, "
"aInputEvent.modifiers=0x%04X (Shift: %s, Control: %s, Alt: %s, "
"OS: %s, AltGr: %s, CapsLock: %s, NumLock: %s, ScrollLock: %s)",
keymapWrapper, aModifierState, aInputEvent.modifiers,
GetBoolName(aInputEvent.modifiers & MODIFIER_SHIFT),
GetBoolName(aInputEvent.modifiers & MODIFIER_CONTROL),
GetBoolName(aInputEvent.modifiers & MODIFIER_ALT),
GetBoolName(aInputEvent.modifiers & MODIFIER_OS),
GetBoolName(aInputEvent.modifiers & MODIFIER_ALTGRAPH),
GetBoolName(aInputEvent.modifiers & MODIFIER_CAPSLOCK),
GetBoolName(aInputEvent.modifiers & MODIFIER_NUMLOCK),
GetBoolName(aInputEvent.modifiers & MODIFIER_SCROLLLOCK)));
switch(aInputEvent.eventStructType) {
case NS_MOUSE_EVENT:
case NS_MOUSE_SCROLL_EVENT:
case NS_DRAG_EVENT:
case NS_SIMPLE_GESTURE_EVENT:
case NS_MOZTOUCH_EVENT:
break;
default:
return;
}
nsMouseEvent_base& mouseEvent = static_cast<nsMouseEvent_base&>(aInputEvent);
mouseEvent.buttons = 0;
if (aModifierState & GDK_BUTTON1_MASK) {
mouseEvent.buttons |= nsMouseEvent::eLeftButtonFlag;
}
if (aModifierState & GDK_BUTTON3_MASK) {
mouseEvent.buttons |= nsMouseEvent::eRightButtonFlag;
}
if (aModifierState & GDK_BUTTON2_MASK) {
mouseEvent.buttons |= nsMouseEvent::eMiddleButtonFlag;
}
PR_LOG(gKeymapWrapperLog, PR_LOG_DEBUG,
("KeymapWrapper(%p): InitInputEvent, aInputEvent has buttons, "
"aInputEvent.buttons=0x%04X (Left: %s, Right: %s, Middle: %s, "
"4th (BACK): %s, 5th (FORWARD): %s)",
keymapWrapper, mouseEvent.buttons,
GetBoolName(mouseEvent.buttons & nsMouseEvent::eLeftButtonFlag),
GetBoolName(mouseEvent.buttons & nsMouseEvent::eRightButtonFlag),
GetBoolName(mouseEvent.buttons & nsMouseEvent::eMiddleButtonFlag),
GetBoolName(mouseEvent.buttons & nsMouseEvent::e4thButtonFlag),
GetBoolName(mouseEvent.buttons & nsMouseEvent::e5thButtonFlag)));
}
/* 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);
}
/* static */ guint
KeymapWrapper::GuessGDKKeyval(PRUint32 aDOMKeyCode)
{
// First, try to handle alphanumeric input, not listed in nsKeycodes:
// most likely, more letters will be getting typed in than things in
// the key list, so we will look through these first.
if (aDOMKeyCode >= NS_VK_A && aDOMKeyCode <= NS_VK_Z) {
// gdk and DOM both use the ASCII codes for these keys.
return aDOMKeyCode;
}
// numbers
if (aDOMKeyCode >= NS_VK_0 && aDOMKeyCode <= NS_VK_9) {
// gdk and DOM both use the ASCII codes for these keys.
return aDOMKeyCode - NS_VK_0 + GDK_0;
}
switch (aDOMKeyCode) {
// keys in numpad
case NS_VK_MULTIPLY: return GDK_KP_Multiply;
case NS_VK_ADD: return GDK_KP_Add;
case NS_VK_SEPARATOR: return GDK_KP_Separator;
case NS_VK_SUBTRACT: return GDK_KP_Subtract;
case NS_VK_DECIMAL: return GDK_KP_Decimal;
case NS_VK_DIVIDE: return GDK_KP_Divide;
case NS_VK_NUMPAD0: return GDK_KP_0;
case NS_VK_NUMPAD1: return GDK_KP_1;
case NS_VK_NUMPAD2: return GDK_KP_2;
case NS_VK_NUMPAD3: return GDK_KP_3;
case NS_VK_NUMPAD4: return GDK_KP_4;
case NS_VK_NUMPAD5: return GDK_KP_5;
case NS_VK_NUMPAD6: return GDK_KP_6;
case NS_VK_NUMPAD7: return GDK_KP_7;
case NS_VK_NUMPAD8: return GDK_KP_8;
case NS_VK_NUMPAD9: return GDK_KP_9;
// other prinable keys
case NS_VK_SPACE: return GDK_space;
case NS_VK_COLON: return GDK_comma;
case NS_VK_SEMICOLON: return GDK_semicolon;
case NS_VK_LESS_THAN: return GDK_less;
case NS_VK_EQUALS: return GDK_equal;
case NS_VK_GREATER_THAN: return GDK_greater;
case NS_VK_QUESTION_MARK: return GDK_question;
case NS_VK_AT: return GDK_at;
case NS_VK_CIRCUMFLEX: return GDK_asciicircum;
case NS_VK_EXCLAMATION: return GDK_exclam;
case NS_VK_DOUBLE_QUOTE: return GDK_quotedbl;
case NS_VK_HASH: return GDK_numbersign;
case NS_VK_DOLLAR: return GDK_dollar;
case NS_VK_PERCENT: return GDK_percent;
case NS_VK_AMPERSAND: return GDK_ampersand;
case NS_VK_UNDERSCORE: return GDK_underscore;
case NS_VK_OPEN_PAREN: return GDK_parenleft;
case NS_VK_CLOSE_PAREN: return GDK_parenright;
case NS_VK_ASTERISK: return GDK_asterisk;
case NS_VK_PLUS: return GDK_plus;
case NS_VK_PIPE: return GDK_bar;
case NS_VK_HYPHEN_MINUS: return GDK_minus;
case NS_VK_OPEN_CURLY_BRACKET: return GDK_braceleft;
case NS_VK_CLOSE_CURLY_BRACKET: return GDK_braceright;
case NS_VK_TILDE: return GDK_asciitilde;
case NS_VK_COMMA: return GDK_comma;
case NS_VK_PERIOD: return GDK_period;
case NS_VK_SLASH: return GDK_slash;
case NS_VK_BACK_QUOTE: return GDK_grave;
case NS_VK_OPEN_BRACKET: return GDK_bracketleft;
case NS_VK_BACK_SLASH: return GDK_backslash;
case NS_VK_CLOSE_BRACKET: return GDK_bracketright;
case NS_VK_QUOTE: return GDK_apostrophe;
}
// misc other things
for (PRUint32 i = 0; i < ArrayLength(kKeyPairs); ++i) {
if (kKeyPairs[i].DOMKeyCode == aDOMKeyCode) {
return kKeyPairs[i].GDKKeyval;
}
}
return 0;
}
/* static */ void
KeymapWrapper::InitKeyEvent(nsKeyEvent& aKeyEvent,
GdkEventKey* aGdkKeyEvent)
{
KeymapWrapper* keymapWrapper = GetInstance();
aKeyEvent.keyCode = ComputeDOMKeyCode(aGdkKeyEvent);
// NOTE: The state of given key event indicates adjacent state of
// modifier keys. E.g., even if the event is Shift key press event,
// the bit for Shift is still false. By the same token, even if the
// event is Shift key release event, the bit for Shift is still true.
// Unfortunately, gdk_keyboard_get_modifiers() returns current modifier
// state. It means if there're some pending modifier key press or
// key release events, the result isn't what we want.
// Temporarily, we should compute the state only when the key event
// is GDK_KEY_PRESS.
// XXX If we could know the modifier keys state at the key release event,
// we should cut out changingMask from modifierState.
guint modifierState = aGdkKeyEvent->state;
if (aGdkKeyEvent->is_modifier && aGdkKeyEvent->type == GDK_KEY_PRESS) {
ModifierKey* modifierKey =
keymapWrapper->GetModifierKey(aGdkKeyEvent->hardware_keycode);
if (modifierKey) {
// If new modifier key is pressed, add the pressed mod mask.
modifierState |= modifierKey->mMask;
}
}
InitInputEvent(aKeyEvent, modifierState);
#ifdef MOZ_PLATFORM_MAEMO
aKeyEvent.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_MOBILE;
#else // #ifdef MOZ_PLATFORM_MAEMO
switch (aGdkKeyEvent->keyval) {
case GDK_Shift_L:
case GDK_Control_L:
case GDK_Alt_L:
case GDK_Super_L:
case GDK_Hyper_L:
case GDK_Meta_L:
aKeyEvent.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_LEFT;
break;
case GDK_Shift_R:
case GDK_Control_R:
case GDK_Alt_R:
case GDK_Super_R:
case GDK_Hyper_R:
case GDK_Meta_R:
aKeyEvent.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_RIGHT;
break;
case GDK_KP_0:
case GDK_KP_1:
case GDK_KP_2:
case GDK_KP_3:
case GDK_KP_4:
case GDK_KP_5:
case GDK_KP_6:
case GDK_KP_7:
case GDK_KP_8:
case GDK_KP_9:
case GDK_KP_Space:
case GDK_KP_Tab:
case GDK_KP_Enter:
case GDK_KP_F1:
case GDK_KP_F2:
case GDK_KP_F3:
case GDK_KP_F4:
case GDK_KP_Home:
case GDK_KP_Left:
case GDK_KP_Up:
case GDK_KP_Right:
case GDK_KP_Down:
case GDK_KP_Prior: // same as GDK_KP_Page_Up
case GDK_KP_Next: // same as GDK_KP_Page_Down
case GDK_KP_End:
case GDK_KP_Begin:
case GDK_KP_Insert:
case GDK_KP_Delete:
case GDK_KP_Equal:
case GDK_KP_Multiply:
case GDK_KP_Add:
case GDK_KP_Separator:
case GDK_KP_Subtract:
case GDK_KP_Decimal:
case GDK_KP_Divide:
aKeyEvent.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_NUMPAD;
break;
default:
aKeyEvent.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD;
break;
}
#endif // #ifdef MOZ_PLATFORM_MAEMO #else
PR_LOG(gKeymapWrapperLog, PR_LOG_ALWAYS,
("KeymapWrapper(%p): InitKeyEvent, modifierState=0x%08X "
"aGdkKeyEvent={ type=%s, keyval=%s(0x%X), state=0x%08X, "
"hardware_keycode=0x%08X, is_modifier=%s } "
"aKeyEvent={ message=%s, isShift=%s, isControl=%s, "
"isAlt=%s, isMeta=%s }",
keymapWrapper, modifierState,
((aGdkKeyEvent->type == GDK_KEY_PRESS) ?
"GDK_KEY_PRESS" : "GDK_KEY_RELEASE"),
gdk_keyval_name(aGdkKeyEvent->keyval),
aGdkKeyEvent->keyval, aGdkKeyEvent->state,
aGdkKeyEvent->hardware_keycode,
GetBoolName(aGdkKeyEvent->is_modifier),
((aKeyEvent.message == NS_KEY_DOWN) ? "NS_KEY_DOWN" :
(aKeyEvent.message == NS_KEY_PRESS) ? "NS_KEY_PRESS" :
"NS_KEY_UP"),
GetBoolName(aKeyEvent.IsShift()), GetBoolName(aKeyEvent.IsControl()),
GetBoolName(aKeyEvent.IsAlt()), GetBoolName(aKeyEvent.IsMeta())));
if (aKeyEvent.message == NS_KEY_PRESS) {
keymapWrapper->InitKeypressEvent(aKeyEvent, aGdkKeyEvent);
}
// The transformations above and in gdk for the keyval are not invertible
// so link to the GdkEvent (which will vanish soon after return from the
// event callback) to give plugins access to hardware_keycode and state.
// (An XEvent would be nice but the GdkEvent is good enough.)
aKeyEvent.pluginEvent = (void *)aGdkKeyEvent;
aKeyEvent.time = aGdkKeyEvent->time;
}
/* static */ PRUint32
KeymapWrapper::GetCharCodeFor(const GdkEventKey *aGdkKeyEvent)
{
// Anything above 0xf000 is considered a non-printable
// Exception: directly encoded UCS characters
if (aGdkKeyEvent->keyval > 0xf000 &&
(aGdkKeyEvent->keyval & 0xff000000) != 0x01000000) {
// Keypad keys are an exception: they return a value different
// from their non-keypad equivalents, but mozilla doesn't distinguish.
switch (aGdkKeyEvent->keyval) {
case GDK_KP_Space: return ' ';
case GDK_KP_Equal: return '=';
case GDK_KP_Multiply: return '*';
case GDK_KP_Add: return '+';
case GDK_KP_Separator: return ',';
case GDK_KP_Subtract: return '-';
case GDK_KP_Decimal: return '.';
case GDK_KP_Divide: return '/';
case GDK_KP_0: return '0';
case GDK_KP_1: return '1';
case GDK_KP_2: return '2';
case GDK_KP_3: return '3';
case GDK_KP_4: return '4';
case GDK_KP_5: return '5';
case GDK_KP_6: return '6';
case GDK_KP_7: return '7';
case GDK_KP_8: return '8';
case GDK_KP_9: return '9';
default: return 0; // non-printables
}
}
static const long MAX_UNICODE = 0x10FFFF;
// we're supposedly printable, let's try to convert
long ucs = keysym2ucs(aGdkKeyEvent->keyval);
if ((ucs != -1) && (ucs < MAX_UNICODE)) {
return ucs;
}
// I guess we couldn't convert
return 0;
}
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);
}
gint
KeymapWrapper::GetKeyLevel(GdkEventKey *aGdkKeyEvent)
{
gint level;
if (!gdk_keymap_translate_keyboard_state(mGdkKeymap,
aGdkKeyEvent->hardware_keycode,
GdkModifierType(aGdkKeyEvent->state),
aGdkKeyEvent->group, NULL, NULL, &level, NULL)) {
return -1;
}
return level;
}
gint
KeymapWrapper::GetFirstLatinGroup()
{
GdkKeymapKey *keys;
gint count;
gint minGroup = -1;
if (gdk_keymap_get_entries_for_keyval(mGdkKeymap, GDK_a, &keys, &count)) {
// find the minimum number group for latin inputtable layout
for (gint i = 0; i < count && minGroup != 0; ++i) {
if (keys[i].level != 0 && keys[i].level != 1) {
continue;
}
if (minGroup >= 0 && keys[i].group > minGroup) {
continue;
}
minGroup = keys[i].group;
}
g_free(keys);
}
return minGroup;
}
bool
KeymapWrapper::IsLatinGroup(guint8 aGroup)
{
GdkKeymapKey *keys;
gint count;
bool result = false;
if (gdk_keymap_get_entries_for_keyval(mGdkKeymap, GDK_a, &keys, &count)) {
for (gint i = 0; i < count; ++i) {
if (keys[i].level != 0 && keys[i].level != 1) {
continue;
}
if (keys[i].group == aGroup) {
result = true;
break;
}
}
g_free(keys);
}
return result;
}
/* static */ bool
KeymapWrapper::IsBasicLatinLetterOrNumeral(PRUint32 aCharCode)
{
return (aCharCode >= 'a' && aCharCode <= 'z') ||
(aCharCode >= 'A' && aCharCode <= 'Z') ||
(aCharCode >= '0' && aCharCode <= '9');
}
/* static */ guint
KeymapWrapper::GetGDKKeyvalWithoutModifier(const GdkEventKey *aGdkKeyEvent)
{
KeymapWrapper* keymapWrapper = GetInstance();
guint state =
(aGdkKeyEvent->state & keymapWrapper->GetModifierMask(NUM_LOCK));
guint keyval;
if (!gdk_keymap_translate_keyboard_state(keymapWrapper->mGdkKeymap,
aGdkKeyEvent->hardware_keycode, GdkModifierType(state),
aGdkKeyEvent->group, &keyval, NULL, NULL, NULL)) {
return 0;
}
return keyval;
}
/* static */ PRUint32
KeymapWrapper::GetDOMKeyCodeFromKeyPairs(guint aGdkKeyval)
{
// map Sun Keyboard special keysyms first.
for (PRUint32 i = 0; i < ArrayLength(kSunKeyPairs); i++) {
if (kSunKeyPairs[i].GDKKeyval == aGdkKeyval) {
return kSunKeyPairs[i].DOMKeyCode;
}
}
// misc other things
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,
("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);
PRUint32 unmodifiedCh =
aKeyEvent.IsShift() ? altCharCodes.mShiftedCharCode :
altCharCodes.mUnshiftedCharCode;
// unshifted charcode of found keyboard layout.
PRUint32 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));
}
/* static */ bool
KeymapWrapper::IsKeyPressEventNecessary(GdkEventKey* aGdkKeyEvent)
{
// If this is a modifier key event, we shouldn't send keypress event.
switch (ComputeDOMKeyCode(aGdkKeyEvent)) {
case NS_VK_SHIFT:
case NS_VK_CONTROL:
case NS_VK_ALT:
case NS_VK_ALTGR:
case NS_VK_WIN:
case NS_VK_CAPS_LOCK:
case NS_VK_NUM_LOCK:
case NS_VK_SCROLL_LOCK:
return false;
default:
return true;
}
}
} // namespace widget
} // namespace mozilla
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