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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "mozilla/Logging.h"
#include "nsGtkKeyUtils.h"
#include <gdk/gdkkeysyms.h>
#include <algorithm>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <dlfcn.h>
#include <gdk/gdkkeysyms-compat.h>
#include <X11/XKBlib.h>
#include "X11UndefineNone.h"
#include "IMContextWrapper.h"
#include "WidgetUtils.h"
#include "WidgetUtilsGtk.h"
#include "keysym2ucs.h"
#include "nsContentUtils.h"
#include "nsGtkUtils.h"
#include "nsIBidiKeyboard.h"
#include "nsPrintfCString.h"
#include "nsReadableUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsWindow.h"
#include "gfxPlatformGtk.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEvents.h"
#ifdef MOZ_WAYLAND
# include <sys/mman.h>
# include "nsWaylandDisplay.h"
#endif
namespace mozilla {
namespace widget {
LazyLogModule gKeymapWrapperLog("KeymapWrapperWidgets");
#define IS_ASCII_ALPHABETICAL(key) \
((('a' <= key) && (key <= 'z')) || (('A' <= key) && (key <= 'Z')))
#define MOZ_MODIFIER_KEYS "MozKeymapWrapper"
KeymapWrapper* KeymapWrapper::sInstance = nullptr;
guint KeymapWrapper::sLastRepeatableHardwareKeyCode = 0;
Time KeymapWrapper::sLastRepeatableKeyTime = 0;
KeymapWrapper::RepeatState KeymapWrapper::sRepeatState =
KeymapWrapper::NOT_PRESSED;
static const char* GetBoolName(bool aBool) { return aBool ? "TRUE" : "FALSE"; }
static const char* GetStatusName(nsEventStatus aStatus) {
switch (aStatus) {
case nsEventStatus_eConsumeDoDefault:
return "nsEventStatus_eConsumeDoDefault";
case nsEventStatus_eConsumeNoDefault:
return "nsEventStatus_eConsumeNoDefault";
case nsEventStatus_eIgnore:
return "nsEventStatus_eIgnore";
case nsEventStatus_eSentinel:
return "nsEventStatus_eSentinel";
default:
return "Illegal value";
}
}
static const nsCString GetKeyLocationName(uint32_t aLocation) {
switch (aLocation) {
case eKeyLocationLeft:
return "KEY_LOCATION_LEFT"_ns;
case eKeyLocationRight:
return "KEY_LOCATION_RIGHT"_ns;
case eKeyLocationStandard:
return "KEY_LOCATION_STANDARD"_ns;
case eKeyLocationNumpad:
return "KEY_LOCATION_NUMPAD"_ns;
default:
return nsPrintfCString("Unknown (0x%04X)", aLocation);
}
}
static const nsCString GetCharacterCodeName(char16_t aChar) {
switch (aChar) {
case 0x0000:
return "NULL (0x0000)"_ns;
case 0x0008:
return "BACKSPACE (0x0008)"_ns;
case 0x0009:
return "CHARACTER TABULATION (0x0009)"_ns;
case 0x000A:
return "LINE FEED (0x000A)"_ns;
case 0x000B:
return "LINE TABULATION (0x000B)"_ns;
case 0x000C:
return "FORM FEED (0x000C)"_ns;
case 0x000D:
return "CARRIAGE RETURN (0x000D)"_ns;
case 0x0018:
return "CANCEL (0x0018)"_ns;
case 0x001B:
return "ESCAPE (0x001B)"_ns;
case 0x0020:
return "SPACE (0x0020)"_ns;
case 0x007F:
return "DELETE (0x007F)"_ns;
case 0x00A0:
return "NO-BREAK SPACE (0x00A0)"_ns;
case 0x00AD:
return "SOFT HYPHEN (0x00AD)"_ns;
case 0x2000:
return "EN QUAD (0x2000)"_ns;
case 0x2001:
return "EM QUAD (0x2001)"_ns;
case 0x2002:
return "EN SPACE (0x2002)"_ns;
case 0x2003:
return "EM SPACE (0x2003)"_ns;
case 0x2004:
return "THREE-PER-EM SPACE (0x2004)"_ns;
case 0x2005:
return "FOUR-PER-EM SPACE (0x2005)"_ns;
case 0x2006:
return "SIX-PER-EM SPACE (0x2006)"_ns;
case 0x2007:
return "FIGURE SPACE (0x2007)"_ns;
case 0x2008:
return "PUNCTUATION SPACE (0x2008)"_ns;
case 0x2009:
return "THIN SPACE (0x2009)"_ns;
case 0x200A:
return "HAIR SPACE (0x200A)"_ns;
case 0x200B:
return "ZERO WIDTH SPACE (0x200B)"_ns;
case 0x200C:
return "ZERO WIDTH NON-JOINER (0x200C)"_ns;
case 0x200D:
return "ZERO WIDTH JOINER (0x200D)"_ns;
case 0x200E:
return "LEFT-TO-RIGHT MARK (0x200E)"_ns;
case 0x200F:
return "RIGHT-TO-LEFT MARK (0x200F)"_ns;
case 0x2029:
return "PARAGRAPH SEPARATOR (0x2029)"_ns;
case 0x202A:
return "LEFT-TO-RIGHT EMBEDDING (0x202A)"_ns;
case 0x202B:
return "RIGHT-TO-LEFT EMBEDDING (0x202B)"_ns;
case 0x202D:
return "LEFT-TO-RIGHT OVERRIDE (0x202D)"_ns;
case 0x202E:
return "RIGHT-TO-LEFT OVERRIDE (0x202E)"_ns;
case 0x202F:
return "NARROW NO-BREAK SPACE (0x202F)"_ns;
case 0x205F:
return "MEDIUM MATHEMATICAL SPACE (0x205F)"_ns;
case 0x2060:
return "WORD JOINER (0x2060)"_ns;
case 0x2066:
return "LEFT-TO-RIGHT ISOLATE (0x2066)"_ns;
case 0x2067:
return "RIGHT-TO-LEFT ISOLATE (0x2067)"_ns;
case 0x3000:
return "IDEOGRAPHIC SPACE (0x3000)"_ns;
case 0xFEFF:
return "ZERO WIDTH NO-BREAK SPACE (0xFEFF)"_ns;
default: {
if (aChar < ' ' || (aChar >= 0x80 && aChar < 0xA0)) {
return nsPrintfCString("control (0x%04X)", aChar);
}
if (NS_IS_HIGH_SURROGATE(aChar)) {
return nsPrintfCString("high surrogate (0x%04X)", aChar);
}
if (NS_IS_LOW_SURROGATE(aChar)) {
return nsPrintfCString("low surrogate (0x%04X)", aChar);
}
return nsPrintfCString("'%s' (0x%04X)",
NS_ConvertUTF16toUTF8(nsAutoString(aChar)).get(),
aChar);
}
}
}
static const nsCString GetCharacterCodeNames(const char16_t* aChars,
uint32_t aLength) {
if (!aLength) {
return "\"\""_ns;
}
nsCString result;
result.AssignLiteral("\"");
StringJoinAppend(result, ", "_ns, Span{aChars, aLength},
[](nsACString& dest, const char16_t charValue) {
dest.Append(GetCharacterCodeName(charValue));
});
result.AppendLiteral("\"");
return result;
}
static const nsCString GetCharacterCodeNames(const nsAString& aString) {
return GetCharacterCodeNames(aString.BeginReading(), aString.Length());
}
/* 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 LEVEL3:
return "Level3";
case LEVEL5:
return "Level5";
case NOT_MODIFIER:
return "NotModifier";
default:
return "InvalidValue";
}
}
/* 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_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 LEVEL3;
case GDK_ISO_Level5_Shift:
return LEVEL5;
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 LEVEL3:
return mModifierMasks[INDEX_LEVEL3];
case LEVEL5:
return mModifierMasks[INDEX_LEVEL5];
default:
return 0;
}
}
KeymapWrapper::ModifierKey* KeymapWrapper::GetModifierKey(
guint aHardwareKeycode) {
for (uint32_t i = 0; i < mModifierKeys.Length(); i++) {
ModifierKey& key = mModifierKeys[i];
if (key.mHardwareKeycode == aHardwareKeycode) {
return &key;
}
}
return nullptr;
}
/* static */
KeymapWrapper* KeymapWrapper::GetInstance() {
if (sInstance) {
sInstance->Init();
return sInstance;
}
sInstance = new KeymapWrapper();
return sInstance;
}
/* static */
void KeymapWrapper::Shutdown() {
if (sInstance) {
delete sInstance;
sInstance = nullptr;
}
}
KeymapWrapper::KeymapWrapper()
: mInitialized(false),
mGdkKeymap(gdk_keymap_get_default()),
mXKBBaseEventCode(0),
mOnKeysChangedSignalHandle(0),
mOnDirectionChangedSignalHandle(0) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p Constructor, mGdkKeymap=%p", this, mGdkKeymap));
g_object_ref(mGdkKeymap);
if (gfxPlatformGtk::GetPlatform()->IsX11Display()) {
InitXKBExtension();
}
Init();
}
void KeymapWrapper::Init() {
if (mInitialized) {
return;
}
mInitialized = true;
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p Init, mGdkKeymap=%p", this, mGdkKeymap));
mModifierKeys.Clear();
memset(mModifierMasks, 0, sizeof(mModifierMasks));
if (gfxPlatformGtk::GetPlatform()->IsX11Display()) {
InitBySystemSettingsX11();
}
#ifdef MOZ_WAYLAND
else {
InitBySystemSettingsWayland();
}
#endif
gdk_window_add_filter(nullptr, FilterEvents, this);
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p Init, CapsLock=0x%X, NumLock=0x%X, "
"ScrollLock=0x%X, Level3=0x%X, Level5=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(LEVEL3),
GetModifierMask(LEVEL5), GetModifierMask(SHIFT),
GetModifierMask(CTRL), GetModifierMask(ALT), GetModifierMask(META),
GetModifierMask(SUPER), GetModifierMask(HYPER)));
}
void KeymapWrapper::InitXKBExtension() {
PodZero(&mKeyboardState);
int xkbMajorVer = XkbMajorVersion;
int xkbMinorVer = XkbMinorVersion;
if (!XkbLibraryVersion(&xkbMajorVer, &xkbMinorVer)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitXKBExtension failed due to failure of "
"XkbLibraryVersion()",
this));
return;
}
Display* display = gdk_x11_display_get_xdisplay(gdk_display_get_default());
// XkbLibraryVersion() set xkbMajorVer and xkbMinorVer to that of the
// library, which may be newer than what is required of the server in
// XkbQueryExtension(), so these variables should be reset to
// XkbMajorVersion and XkbMinorVersion before the XkbQueryExtension call.
xkbMajorVer = XkbMajorVersion;
xkbMinorVer = XkbMinorVersion;
int opcode, baseErrorCode;
if (!XkbQueryExtension(display, &opcode, &mXKBBaseEventCode, &baseErrorCode,
&xkbMajorVer, &xkbMinorVer)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitXKBExtension failed due to failure of "
"XkbQueryExtension(), display=0x%p",
this, display));
return;
}
if (!XkbSelectEventDetails(display, XkbUseCoreKbd, XkbStateNotify,
XkbModifierStateMask, XkbModifierStateMask)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitXKBExtension failed due to failure of "
"XkbSelectEventDetails() for XModifierStateMask, display=0x%p",
this, display));
return;
}
if (!XkbSelectEventDetails(display, XkbUseCoreKbd, XkbControlsNotify,
XkbPerKeyRepeatMask, XkbPerKeyRepeatMask)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitXKBExtension failed due to failure of "
"XkbSelectEventDetails() for XkbControlsNotify, display=0x%p",
this, display));
return;
}
if (!XGetKeyboardControl(display, &mKeyboardState)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitXKBExtension failed due to failure of "
"XGetKeyboardControl(), display=0x%p",
this, display));
return;
}
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitXKBExtension, Succeeded", this));
}
void KeymapWrapper::InitBySystemSettingsX11() {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitBySystemSettingsX11, mGdkKeymap=%p", this, mGdkKeymap));
if (!mOnKeysChangedSignalHandle) {
mOnKeysChangedSignalHandle = g_signal_connect(
mGdkKeymap, "keys-changed", (GCallback)OnKeysChanged, this);
}
if (!mOnDirectionChangedSignalHandle) {
mOnDirectionChangedSignalHandle = g_signal_connect(
mGdkKeymap, "direction-changed", (GCallback)OnDirectionChanged, this);
}
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) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitBySystemSettings, "
"Failed due to null xkeymap",
this));
return;
}
XModifierKeymap* xmodmap = XGetModifierMapping(display);
if (!xmodmap) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitBySystemSettings, "
"Failed due to null xmodmap",
this));
XFree(xkeymap);
return;
}
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%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. In such cases, we need to
// decide which modifier flag means one of DOM modifiers.
// mod[0] is Modifier introduced by Mod1.
Modifier mod[5];
int32_t foundLevel[5];
for (uint32_t i = 0; i < ArrayLength(mod); i++) {
mod[i] = NOT_MODIFIER;
foundLevel[i] = INT32_MAX;
}
const uint32_t map_size = 8 * xmodmap->max_keypermod;
for (uint32_t i = 0; i < map_size; i++) {
KeyCode keycode = xmodmap->modifiermap[i];
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%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 uint32_t bit = i / xmodmap->max_keypermod;
modifierKey->mMask |= 1 << bit;
// We need to know the meaning of Mod1, Mod2, Mod3, Mod4 and Mod5.
// Let's skip if current map is for others.
if (bit < 3) {
continue;
}
const int32_t modIndex = bit - 3;
for (int32_t j = 0; j < keysyms_per_keycode; j++) {
Modifier modifier = GetModifierForGDKKeyval(syms[j]);
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p InitBySystemSettings, "
" Mod%d, j=%d, syms[j]=%s(0x%lX), modifier=%s",
this, modIndex + 1, j, gdk_keyval_name(syms[j]), syms[j],
GetModifierName(modifier)));
switch (modifier) {
case NOT_MODIFIER:
// Don't overwrite the stored information with
// NOT_MODIFIER.
break;
case CAPS_LOCK:
case SHIFT:
case CTRL:
// Ignore the modifiers defined in GDK spec. They shouldn't
// be mapped to Mod1-5 because they must not work on native
// GTK applications.
break;
default:
// If new modifier is found in higher level than stored
// value, we don't need to overwrite it.
if (j > foundLevel[modIndex]) {
break;
}
// If new modifier is more important than stored value,
// we should overwrite it with new modifier.
if (j == foundLevel[modIndex]) {
mod[modIndex] = std::min(modifier, mod[modIndex]);
break;
}
foundLevel[modIndex] = j;
mod[modIndex] = modifier;
break;
}
}
}
for (uint32_t i = 0; i < COUNT_OF_MODIFIER_INDEX; i++) {
Modifier modifier;
switch (i) {
case INDEX_NUM_LOCK:
modifier = NUM_LOCK;
break;
case INDEX_SCROLL_LOCK:
modifier = SCROLL_LOCK;
break;
case INDEX_ALT:
modifier = ALT;
break;
case INDEX_META:
modifier = META;
break;
case INDEX_SUPER:
modifier = SUPER;
break;
case INDEX_HYPER:
modifier = HYPER;
break;
case INDEX_LEVEL3:
modifier = LEVEL3;
break;
case INDEX_LEVEL5:
modifier = LEVEL5;
break;
default:
MOZ_CRASH("All indexes must be handled here");
}
for (uint32_t j = 0; j < ArrayLength(mod); j++) {
if (modifier == mod[j]) {
mModifierMasks[i] |= 1 << (j + 3);
}
}
}
XFreeModifiermap(xmodmap);
XFree(xkeymap);
}
#ifdef MOZ_WAYLAND
void KeymapWrapper::SetModifierMask(xkb_keymap* aKeymap,
ModifierIndex aModifierIndex,
const char* aModifierName) {
static auto sXkbKeymapModGetIndex =
(xkb_mod_index_t(*)(struct xkb_keymap*, const char*))dlsym(
RTLD_DEFAULT, "xkb_keymap_mod_get_index");
xkb_mod_index_t index = sXkbKeymapModGetIndex(aKeymap, aModifierName);
if (index != XKB_MOD_INVALID) {
mModifierMasks[aModifierIndex] = (1 << index);
}
}
void KeymapWrapper::SetModifierMasks(xkb_keymap* aKeymap) {
KeymapWrapper* keymapWrapper = GetInstance();
// This mapping is derived from get_xkb_modifiers() at gdkkeys-wayland.c
keymapWrapper->SetModifierMask(aKeymap, INDEX_NUM_LOCK, XKB_MOD_NAME_NUM);
keymapWrapper->SetModifierMask(aKeymap, INDEX_ALT, XKB_MOD_NAME_ALT);
keymapWrapper->SetModifierMask(aKeymap, INDEX_META, "Meta");
keymapWrapper->SetModifierMask(aKeymap, INDEX_SUPER, "Super");
keymapWrapper->SetModifierMask(aKeymap, INDEX_HYPER, "Hyper");
keymapWrapper->SetModifierMask(aKeymap, INDEX_SCROLL_LOCK, "ScrollLock");
keymapWrapper->SetModifierMask(aKeymap, INDEX_LEVEL3, "Level3");
keymapWrapper->SetModifierMask(aKeymap, INDEX_LEVEL5, "Level5");
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p KeymapWrapper::SetModifierMasks, CapsLock=0x%X, NumLock=0x%X, "
"ScrollLock=0x%X, Level3=0x%X, Level5=0x%X, "
"Shift=0x%X, Ctrl=0x%X, Alt=0x%X, Meta=0x%X, Super=0x%X, Hyper=0x%X",
keymapWrapper, keymapWrapper->GetModifierMask(CAPS_LOCK),
keymapWrapper->GetModifierMask(NUM_LOCK),
keymapWrapper->GetModifierMask(SCROLL_LOCK),
keymapWrapper->GetModifierMask(LEVEL3),
keymapWrapper->GetModifierMask(LEVEL5),
keymapWrapper->GetModifierMask(SHIFT),
keymapWrapper->GetModifierMask(CTRL),
keymapWrapper->GetModifierMask(ALT),
keymapWrapper->GetModifierMask(META),
keymapWrapper->GetModifierMask(SUPER),
keymapWrapper->GetModifierMask(HYPER)));
}
/* This keymap routine is derived from weston-2.0.0/clients/simple-im.c
*/
static void keyboard_handle_keymap(void* data, struct wl_keyboard* wl_keyboard,
uint32_t format, int fd, uint32_t size) {
KeymapWrapper::ResetKeyboard();
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
close(fd);
return;
}
char* mapString = (char*)mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (mapString == MAP_FAILED) {
close(fd);
return;
}
static auto sXkbContextNew =
(struct xkb_context * (*)(enum xkb_context_flags))
dlsym(RTLD_DEFAULT, "xkb_context_new");
static auto sXkbKeymapNewFromString =
(struct xkb_keymap * (*)(struct xkb_context*, const char*,
enum xkb_keymap_format,
enum xkb_keymap_compile_flags))
dlsym(RTLD_DEFAULT, "xkb_keymap_new_from_string");
struct xkb_context* xkb_context = sXkbContextNew(XKB_CONTEXT_NO_FLAGS);
struct xkb_keymap* keymap =
sXkbKeymapNewFromString(xkb_context, mapString, XKB_KEYMAP_FORMAT_TEXT_V1,
XKB_KEYMAP_COMPILE_NO_FLAGS);
munmap(mapString, size);
close(fd);
if (!keymap) {
NS_WARNING("keyboard_handle_keymap(): Failed to compile keymap!\n");
return;
}
KeymapWrapper::SetModifierMasks(keymap);
static auto sXkbKeymapUnRef =
(void (*)(struct xkb_keymap*))dlsym(RTLD_DEFAULT, "xkb_keymap_unref");
sXkbKeymapUnRef(keymap);
static auto sXkbContextUnref =
(void (*)(struct xkb_context*))dlsym(RTLD_DEFAULT, "xkb_context_unref");
sXkbContextUnref(xkb_context);
}
static void keyboard_handle_enter(void* data, struct wl_keyboard* keyboard,
uint32_t serial, struct wl_surface* surface,
struct wl_array* keys) {}
static void keyboard_handle_leave(void* data, struct wl_keyboard* keyboard,
uint32_t serial, struct wl_surface* surface) {
}
static void keyboard_handle_key(void* data, struct wl_keyboard* keyboard,
uint32_t serial, uint32_t time, uint32_t key,
uint32_t state) {}
static void keyboard_handle_modifiers(void* data, struct wl_keyboard* keyboard,
uint32_t serial, uint32_t mods_depressed,
uint32_t mods_latched,
uint32_t mods_locked, uint32_t group) {}
static const struct wl_keyboard_listener keyboard_listener = {
keyboard_handle_keymap, keyboard_handle_enter, keyboard_handle_leave,
keyboard_handle_key, keyboard_handle_modifiers,
};
static void seat_handle_capabilities(void* data, struct wl_seat* seat,
unsigned int caps) {
static wl_keyboard* keyboard = nullptr;
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !keyboard) {
keyboard = wl_seat_get_keyboard(seat);
wl_keyboard_add_listener(keyboard, &keyboard_listener, nullptr);
} else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && keyboard) {
wl_keyboard_destroy(keyboard);
keyboard = nullptr;
}
}
static const struct wl_seat_listener seat_listener = {
seat_handle_capabilities,
};
static void gdk_registry_handle_global(void* data, struct wl_registry* registry,
uint32_t id, const char* interface,
uint32_t version) {
if (strcmp(interface, "wl_seat") == 0) {
auto* seat =
WaylandRegistryBind<wl_seat>(registry, id, &wl_seat_interface, 1);
wl_seat_add_listener(seat, &seat_listener, data);
}
}
static void gdk_registry_handle_global_remove(void* data,
struct wl_registry* registry,
uint32_t id) {}
static const struct wl_registry_listener keyboard_registry_listener = {
gdk_registry_handle_global, gdk_registry_handle_global_remove};
void KeymapWrapper::InitBySystemSettingsWayland() {
wl_display* display = WaylandDisplayGetWLDisplay();
wl_registry_add_listener(wl_display_get_registry(display),
&keyboard_registry_listener, this);
}
#endif
KeymapWrapper::~KeymapWrapper() {
gdk_window_remove_filter(nullptr, FilterEvents, this);
if (mOnKeysChangedSignalHandle) {
g_signal_handler_disconnect(mGdkKeymap, mOnKeysChangedSignalHandle);
}
if (mOnDirectionChangedSignalHandle) {
g_signal_handler_disconnect(mGdkKeymap, mOnDirectionChangedSignalHandle);
}
g_object_unref(mGdkKeymap);
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info, ("%p Destructor", this));
}
/* static */
GdkFilterReturn KeymapWrapper::FilterEvents(GdkXEvent* aXEvent,
GdkEvent* aGdkEvent,
gpointer aData) {
XEvent* xEvent = static_cast<XEvent*>(aXEvent);
switch (xEvent->type) {
case KeyPress: {
// If the key doesn't support auto repeat, ignore the event because
// even if such key (e.g., Shift) is pressed during auto repeat of
// anoter key, it doesn't stop the auto repeat.
KeymapWrapper* self = static_cast<KeymapWrapper*>(aData);
if (!self->IsAutoRepeatableKey(xEvent->xkey.keycode)) {
break;
}
if (sRepeatState == NOT_PRESSED) {
sRepeatState = FIRST_PRESS;
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("FilterEvents(aXEvent={ type=KeyPress, "
"xkey={ keycode=0x%08X, state=0x%08X, time=%lu } }, "
"aGdkEvent={ state=0x%08X }), "
"detected first keypress",
xEvent->xkey.keycode, xEvent->xkey.state, xEvent->xkey.time,
reinterpret_cast<GdkEventKey*>(aGdkEvent)->state));
} else if (sLastRepeatableHardwareKeyCode == xEvent->xkey.keycode) {
if (sLastRepeatableKeyTime == xEvent->xkey.time &&
sLastRepeatableHardwareKeyCode ==
IMContextWrapper::
GetWaitingSynthesizedKeyPressHardwareKeyCode()) {
// On some environment, IM may generate duplicated KeyPress event
// without any special state flags. In such case, we shouldn't
// treat the event as "repeated".
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("FilterEvents(aXEvent={ type=KeyPress, "
"xkey={ keycode=0x%08X, state=0x%08X, time=%lu } }, "
"aGdkEvent={ state=0x%08X }), "
"igored keypress since it must be synthesized by IME",
xEvent->xkey.keycode, xEvent->xkey.state, xEvent->xkey.time,
reinterpret_cast<GdkEventKey*>(aGdkEvent)->state));
break;
}
sRepeatState = REPEATING;
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("FilterEvents(aXEvent={ type=KeyPress, "
"xkey={ keycode=0x%08X, state=0x%08X, time=%lu } }, "
"aGdkEvent={ state=0x%08X }), "
"detected repeating keypress",
xEvent->xkey.keycode, xEvent->xkey.state, xEvent->xkey.time,
reinterpret_cast<GdkEventKey*>(aGdkEvent)->state));
} else {
// If a different key is pressed while another key is pressed,
// auto repeat system repeats only the last pressed key.
// So, setting new keycode and setting repeat state as first key
// press should work fine.
sRepeatState = FIRST_PRESS;
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("FilterEvents(aXEvent={ type=KeyPress, "
"xkey={ keycode=0x%08X, state=0x%08X, time=%lu } }, "
"aGdkEvent={ state=0x%08X }), "
"detected different keypress",
xEvent->xkey.keycode, xEvent->xkey.state, xEvent->xkey.time,
reinterpret_cast<GdkEventKey*>(aGdkEvent)->state));
}
sLastRepeatableHardwareKeyCode = xEvent->xkey.keycode;
sLastRepeatableKeyTime = xEvent->xkey.time;
break;
}
case KeyRelease: {
if (sLastRepeatableHardwareKeyCode != xEvent->xkey.keycode) {
// This case means the key release event is caused by
// a non-repeatable key such as Shift or a repeatable key that
// was pressed before sLastRepeatableHardwareKeyCode was
// pressed.
break;
}
sRepeatState = NOT_PRESSED;
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("FilterEvents(aXEvent={ type=KeyRelease, "
"xkey={ keycode=0x%08X, state=0x%08X, time=%lu } }, "
"aGdkEvent={ state=0x%08X }), "
"detected key release",
xEvent->xkey.keycode, xEvent->xkey.state, xEvent->xkey.time,
reinterpret_cast<GdkEventKey*>(aGdkEvent)->state));
break;
}
case FocusOut: {
// At moving focus, we should reset keyboard repeat state.
// Strictly, this causes incorrect behavior. However, this
// correctness must be enough for web applications.
sRepeatState = NOT_PRESSED;
break;
}
default: {
KeymapWrapper* self = static_cast<KeymapWrapper*>(aData);
if (xEvent->type != self->mXKBBaseEventCode) {
break;
}
XkbEvent* xkbEvent = (XkbEvent*)xEvent;
if (xkbEvent->any.xkb_type != XkbControlsNotify ||
!(xkbEvent->ctrls.changed_ctrls & XkbPerKeyRepeatMask)) {
break;
}
if (!XGetKeyboardControl(xkbEvent->any.display, &self->mKeyboardState)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p FilterEvents failed due to failure "
"of XGetKeyboardControl(), display=0x%p",
self, xkbEvent->any.display));
}
break;
}
}
return GDK_FILTER_CONTINUE;
}
static void ResetBidiKeyboard() {
// Reset the bidi keyboard settings for the new GdkKeymap
nsCOMPtr<nsIBidiKeyboard> bidiKeyboard = nsContentUtils::GetBidiKeyboard();
if (bidiKeyboard) {
bidiKeyboard->Reset();
}
WidgetUtils::SendBidiKeyboardInfoToContent();
}
/* static */
void KeymapWrapper::ResetKeyboard() {
sInstance->mInitialized = false;
ResetBidiKeyboard();
}
/* static */
void KeymapWrapper::OnKeysChanged(GdkKeymap* aGdkKeymap,
KeymapWrapper* aKeymapWrapper) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("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.
ResetKeyboard();
}
// static
void KeymapWrapper::OnDirectionChanged(GdkKeymap* aGdkKeymap,
KeymapWrapper* aKeymapWrapper) {
// XXX
// A lot of diretion-changed signal might be fired on switching bidi
// keyboard when using both ibus (with arabic layout) and fcitx (with IME).
//
// Also, when using ibus, switching to IM might not cause this signal.
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("OnDirectionChanged, aGdkKeymap=%p, aKeymapWrapper=%p", aGdkKeymap,
aKeymapWrapper));
ResetBidiKeyboard();
}
/* static */
guint KeymapWrapper::GetCurrentModifierState() {
GdkModifierType modifiers;
gdk_display_get_pointer(gdk_display_get_default(), nullptr, nullptr, nullptr,
&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 (uint32_t 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 */
uint32_t KeymapWrapper::ComputeCurrentKeyModifiers() {
return ComputeKeyModifiers(GetCurrentModifierState());
}
/* static */
uint32_t KeymapWrapper::ComputeKeyModifiers(guint aModifierState) {
KeymapWrapper* keymapWrapper = GetInstance();
uint32_t keyModifiers = 0;
// DOM Meta key should be TRUE only on Mac. We need to discuss this
// issue later.
if (keymapWrapper->AreModifiersActive(SHIFT, aModifierState)) {
keyModifiers |= MODIFIER_SHIFT;
}
if (keymapWrapper->AreModifiersActive(CTRL, aModifierState)) {
keyModifiers |= MODIFIER_CONTROL;
}
if (keymapWrapper->AreModifiersActive(ALT, aModifierState)) {
keyModifiers |= MODIFIER_ALT;
}
if (keymapWrapper->AreModifiersActive(META, aModifierState)) {
keyModifiers |= MODIFIER_META;
}
if (keymapWrapper->AreModifiersActive(SUPER, aModifierState) ||
keymapWrapper->AreModifiersActive(HYPER, aModifierState)) {
keyModifiers |= MODIFIER_OS;
}
if (keymapWrapper->AreModifiersActive(LEVEL3, aModifierState) ||
keymapWrapper->AreModifiersActive(LEVEL5, aModifierState)) {
keyModifiers |= MODIFIER_ALTGRAPH;
}
if (keymapWrapper->AreModifiersActive(CAPS_LOCK, aModifierState)) {
keyModifiers |= MODIFIER_CAPSLOCK;
}
if (keymapWrapper->AreModifiersActive(NUM_LOCK, aModifierState)) {
keyModifiers |= MODIFIER_NUMLOCK;
}
if (keymapWrapper->AreModifiersActive(SCROLL_LOCK, aModifierState)) {
keyModifiers |= MODIFIER_SCROLLLOCK;
}
return keyModifiers;
}
/* static */
guint KeymapWrapper::ConvertWidgetModifierToGdkState(
nsIWidget::Modifiers aNativeModifiers) {
if (!aNativeModifiers) {
return 0;
}
struct ModifierMapEntry {
nsIWidget::Modifiers mWidgetModifier;
Modifier mModifier;
};
// TODO: Currently, we don't treat L/R of each modifier on Linux.
// TODO: No proper native modifier for Level5.
static constexpr ModifierMapEntry sModifierMap[] = {
{nsIWidget::CAPS_LOCK, Modifier::CAPS_LOCK},
{nsIWidget::NUM_LOCK, Modifier::NUM_LOCK},
{nsIWidget::SHIFT_L, Modifier::SHIFT},
{nsIWidget::SHIFT_R, Modifier::SHIFT},
{nsIWidget::CTRL_L, Modifier::CTRL},
{nsIWidget::CTRL_R, Modifier::CTRL},
{nsIWidget::ALT_L, Modifier::ALT},
{nsIWidget::ALT_R, Modifier::ALT},
{nsIWidget::ALTGRAPH, Modifier::LEVEL3},
{nsIWidget::COMMAND_L, Modifier::SUPER},
{nsIWidget::COMMAND_R, Modifier::SUPER}};
guint state = 0;
KeymapWrapper* instance = GetInstance();
for (const ModifierMapEntry& entry : sModifierMap) {
if (aNativeModifiers & entry.mWidgetModifier) {
state |= instance->GetModifierMask(entry.mModifier);
}
}
return state;
}
/* static */
void KeymapWrapper::InitInputEvent(WidgetInputEvent& aInputEvent,
guint aModifierState) {
KeymapWrapper* keymapWrapper = GetInstance();
aInputEvent.mModifiers = ComputeKeyModifiers(aModifierState);
// Don't log this method for non-important events because e.g., eMouseMove is
// just noisy and there is no reason to log it.
bool doLog = aInputEvent.mMessage != eMouseMove;
if (doLog) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Debug,
("%p InitInputEvent, aModifierState=0x%08X, "
"aInputEvent={ mMessage=%s, mModifiers=0x%04X (Shift: %s, "
"Control: %s, Alt: %s, "
"Meta: %s, OS: %s, AltGr: %s, "
"CapsLock: %s, NumLock: %s, ScrollLock: %s })",
keymapWrapper, aModifierState, ToChar(aInputEvent.mMessage),
aInputEvent.mModifiers,
GetBoolName(aInputEvent.mModifiers & MODIFIER_SHIFT),
GetBoolName(aInputEvent.mModifiers & MODIFIER_CONTROL),
GetBoolName(aInputEvent.mModifiers & MODIFIER_ALT),
GetBoolName(aInputEvent.mModifiers & MODIFIER_META),
GetBoolName(aInputEvent.mModifiers & MODIFIER_OS),
GetBoolName(aInputEvent.mModifiers & MODIFIER_ALTGRAPH),
GetBoolName(aInputEvent.mModifiers & MODIFIER_CAPSLOCK),
GetBoolName(aInputEvent.mModifiers & MODIFIER_NUMLOCK),
GetBoolName(aInputEvent.mModifiers & MODIFIER_SCROLLLOCK)));
}
switch (aInputEvent.mClass) {
case eMouseEventClass:
case eMouseScrollEventClass:
case eWheelEventClass:
case eDragEventClass:
case eSimpleGestureEventClass:
break;
default:
return;
}
WidgetMouseEventBase& mouseEvent = *aInputEvent.AsMouseEventBase();
mouseEvent.mButtons = 0;
if (aModifierState & GDK_BUTTON1_MASK) {
mouseEvent.mButtons |= MouseButtonsFlag::ePrimaryFlag;
}
if (aModifierState & GDK_BUTTON3_MASK) {
mouseEvent.mButtons |= MouseButtonsFlag::eSecondaryFlag;
}
if (aModifierState & GDK_BUTTON2_MASK) {
mouseEvent.mButtons |= MouseButtonsFlag::eMiddleFlag;
}
if (doLog) {
MOZ_LOG(
gKeymapWrapperLog, LogLevel::Debug,
("%p InitInputEvent, aInputEvent has mButtons, "
"aInputEvent.mButtons=0x%04X (Left: %s, Right: %s, Middle: %s, "
"4th (BACK): %s, 5th (FORWARD): %s)",
keymapWrapper, mouseEvent.mButtons,
GetBoolName(mouseEvent.mButtons & MouseButtonsFlag::ePrimaryFlag),
GetBoolName(mouseEvent.mButtons & MouseButtonsFlag::eSecondaryFlag),
GetBoolName(mouseEvent.mButtons & MouseButtonsFlag::eMiddleFlag),
GetBoolName(mouseEvent.mButtons & MouseButtonsFlag::e4thFlag),
GetBoolName(mouseEvent.mButtons & MouseButtonsFlag::e5thFlag)));
}
}
/* static */
uint32_t 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;
}
// Note that the modifier keycode and activating or deactivating
// modifier flag may be mismatched, but it's okay. If a DOM key
// event handler is testing a keydown event, it's more likely being
// used to test which key is being pressed than to test which
// modifier will become active. So, if we computed DOM keycode
// from modifier flag which were changing by the physical key, then
// there would be no other way for the user to generate the original
// keycode.
uint32_t DOMKeyCode = GetDOMKeyCodeFromKeyPairs(keyval);
NS_ASSERTION(DOMKeyCode, "All modifier keys must have a DOM keycode");
return DOMKeyCode;
}
// If the key isn't printable, let's look at the key pairs.
uint32_t charCode = GetCharCodeFor(aGdkKeyEvent);
if (!charCode) {
// Note that any key may be a function key because of some unusual keyboard
// layouts. I.e., even if the pressed key is a printable key of en-US
// keyboard layout, we should expose the function key's keyCode value to
// web apps because web apps should handle the keydown/keyup events as
// inputted by usual keyboard layout. For example, Hatchak keyboard
// maps Tab key to "Digit3" key and Level3 Shift makes it "Backspace".
// In this case, we should expose DOM_VK_BACK_SPACE (8).
uint32_t DOMKeyCode = GetDOMKeyCodeFromKeyPairs(keyval);
if (DOMKeyCode) {
// XXX If DOMKeyCode is a function key's keyCode value, it might be
// better to consume necessary modifiers. For example, if there is
// no Control Pad section on keyboard like notebook, Delete key is
// available only with Level3 Shift+"Backspace" key if using Hatchak.
// If web apps accept Delete key operation only when no modifiers are
// active, such users cannot use Delete key to do it. However,
// Chromium doesn't consume such necessary modifiers. So, our default
// behavior should keep not touching modifiers for compatibility, but
// it might be better to add a pref to consume necessary modifiers.
return DOMKeyCode;
}
// If aGdkKeyEvent cannot be mapped to a DOM keyCode value, we should
// refer keyCode value without modifiers because web apps should be
// able to identify the key as far as possible.
guint keyvalWithoutModifier = GetGDKKeyvalWithoutModifier(aGdkKeyEvent);
return GetDOMKeyCodeFromKeyPairs(keyvalWithoutModifier);
}
// 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.
uint32_t 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 (!IsPrintableASCIICharacter(unmodifiedChar)) {
unmodifiedChar = 0;
}
// Retry with shifted keycode.
guint shiftState = (baseState | keymapWrapper->GetModifierMask(SHIFT));
uint32_t 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 (!IsPrintableASCIICharacter(shiftedChar)) {
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.
uint32_t unmodCharLatin = 0;
uint32_t shiftedCharLatin = 0;
if (!keymapWrapper->IsLatinGroup(aGdkKeyEvent->group)) {
gint minGroup = keymapWrapper->GetFirstLatinGroup();
if (minGroup >= 0) {
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);
}
// If the unmodified character in the alternative ASCII capable
// keyboard layout isn't an ASCII character, that means we couldn't
// find the hint. We should reset it.
if (!IsPrintableASCIICharacter(unmodCharLatin)) {
unmodCharLatin = 0;
}
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 the shifted unmodified character in the alternative ASCII
// capable keyboard layout isn't an ASCII character, we should
// discard it too.
if (!IsPrintableASCIICharacter(shiftedCharLatin)) {
shiftedCharLatin = 0;
}
}
}
// If the key itself or with Shift state on active keyboard layout produces
// an ASCII punctuation character, we should decide keyCode value with it.
if (unmodifiedChar || shiftedChar) {
return WidgetUtils::ComputeKeyCodeFromChar(unmodifiedChar ? unmodifiedChar
: shiftedChar);
}
// If the key itself or with Shift state on alternative ASCII capable
// keyboard layout produces an ASCII punctuation character, we should
// decide keyCode value with it. Note that We've returned 0 for long
// time if keyCode isn't for an alphabet keys or a numeric key even in
// alternative ASCII capable keyboard layout because we decided that we
// should avoid setting same keyCode value to 2 or more keys since active
// keyboard layout may have a key to input the punctuation with different
// key. However, setting keyCode to 0 makes some web applications which
// are aware of neither KeyboardEvent.key nor KeyboardEvent.code not work
// with Firefox when user selects non-ASCII capable keyboard layout such
// as Russian and Thai. So, if alternative ASCII capable keyboard layout
// has keyCode value for the key, we should use it. In other words, this
// behavior means that non-ASCII capable keyboard layout overrides some
// keys' keyCode value only if the key produces ASCII character by itself
// or with Shift key.
if (unmodCharLatin || shiftedCharLatin) {
return WidgetUtils::ComputeKeyCodeFromChar(
unmodCharLatin ? unmodCharLatin : shiftedCharLatin);
}
// Otherwise, let's decide keyCode value from the hardware_keycode
// value on major keyboard layout.
CodeNameIndex code = ComputeDOMCodeNameIndex(aGdkKeyEvent);
return WidgetKeyboardEvent::GetFallbackKeyCodeOfPunctuationKey(code);
}
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;
}
return KEY_NAME_INDEX_Unidentified;
}
/* static */
CodeNameIndex KeymapWrapper::ComputeDOMCodeNameIndex(
const GdkEventKey* aGdkKeyEvent) {
switch (aGdkKeyEvent->hardware_keycode) {
#define NS_NATIVE_KEY_TO_DOM_CODE_NAME_INDEX(aNativeKey, aCodeNameIndex) \
case aNativeKey: \
return aCodeNameIndex;
#include "NativeKeyToDOMCodeName.h"
#undef NS_NATIVE_KEY_TO_DOM_CODE_NAME_INDEX
default:
break;
}
return CODE_NAME_INDEX_UNKNOWN;
}
/* static */
bool KeymapWrapper::DispatchKeyDownOrKeyUpEvent(nsWindow* aWindow,
GdkEventKey* aGdkKeyEvent,
bool aIsProcessedByIME,
bool* aIsCancelled) {
MOZ_ASSERT(aIsCancelled, "aIsCancelled must not be nullptr");
*aIsCancelled = false;
if (aGdkKeyEvent->type == GDK_KEY_PRESS && aGdkKeyEvent->keyval == GDK_Tab &&
AreModifiersActive(CTRL | ALT, aGdkKeyEvent->state)) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
(" DispatchKeyDownOrKeyUpEvent(), didn't dispatch keyboard events "
"because it's Ctrl + Alt + Tab"));
return false;
}
EventMessage message =
aGdkKeyEvent->type == GDK_KEY_PRESS ? eKeyDown : eKeyUp;
WidgetKeyboardEvent keyEvent(true, message, aWindow);
KeymapWrapper::InitKeyEvent(keyEvent, aGdkKeyEvent, aIsProcessedByIME);
return DispatchKeyDownOrKeyUpEvent(aWindow, keyEvent, aIsCancelled);
}
/* static */
bool KeymapWrapper::DispatchKeyDownOrKeyUpEvent(
nsWindow* aWindow, WidgetKeyboardEvent& aKeyboardEvent,
bool* aIsCancelled) {
MOZ_ASSERT(aIsCancelled, "aIsCancelled must not be nullptr");
*aIsCancelled = false;
RefPtr<TextEventDispatcher> dispatcher = aWindow->GetTextEventDispatcher();
nsresult rv = dispatcher->BeginNativeInputTransaction();
if (NS_WARN_IF(NS_FAILED(rv))) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Error,
(" DispatchKeyDownOrKeyUpEvent(), stopped dispatching %s event "
"because of failed to initialize TextEventDispatcher",
ToChar(aKeyboardEvent.mMessage)));
return FALSE;
}
nsEventStatus status = nsEventStatus_eIgnore;
bool dispatched = dispatcher->DispatchKeyboardEvent(
aKeyboardEvent.mMessage, aKeyboardEvent, status, nullptr);
*aIsCancelled = (status == nsEventStatus_eConsumeNoDefault);
return dispatched;
}
/* static */
bool KeymapWrapper::MaybeDispatchContextMenuEvent(nsWindow* aWindow,
const GdkEventKey* aEvent) {
KeyNameIndex keyNameIndex = ComputeDOMKeyNameIndex(aEvent);
// Shift+F10 and ContextMenu should cause eContextMenu event.
if (keyNameIndex != KEY_NAME_INDEX_F10 &&
keyNameIndex != KEY_NAME_INDEX_ContextMenu) {
return false;
}
WidgetMouseEvent contextMenuEvent(true, eContextMenu, aWindow,
WidgetMouseEvent::eReal,
WidgetMouseEvent::eContextMenuKey);
contextMenuEvent.mRefPoint = LayoutDeviceIntPoint(0, 0);
contextMenuEvent.AssignEventTime(aWindow->GetWidgetEventTime(aEvent->time));
contextMenuEvent.mClickCount = 1;
KeymapWrapper::InitInputEvent(contextMenuEvent, aEvent->state);
if (contextMenuEvent.IsControl() || contextMenuEvent.IsMeta() ||
contextMenuEvent.IsAlt()) {
return false;
}
// If the key is ContextMenu, then an eContextMenu mouse event is
// dispatched regardless of the state of the Shift modifier. When it is
// pressed without the Shift modifier, a web page can prevent the default
// context menu action. When pressed with the Shift modifier, the web page
// cannot prevent the default context menu action.
// (PresShell::HandleEventInternal() sets mOnlyChromeDispatch to true.)
// If the key is F10, it needs Shift state because Shift+F10 is well-known
// shortcut key on Linux. However, eContextMenu with Shift state is
// special. It won't fire "contextmenu" event in the web content for
// blocking web page to prevent its default. Therefore, this combination
// should work same as ContextMenu key.
// XXX Should we allow to block web page to prevent its default with
// Ctrl+Shift+F10 or Alt+Shift+F10 instead?
if (keyNameIndex == KEY_NAME_INDEX_F10) {
if (!contextMenuEvent.IsShift()) {
return false;
}
contextMenuEvent.mModifiers &= ~MODIFIER_SHIFT;
}
aWindow->DispatchInputEvent(&contextMenuEvent);
return true;
}
/* static*/
void KeymapWrapper::HandleKeyPressEvent(nsWindow* aWindow,
GdkEventKey* aGdkKeyEvent) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("HandleKeyPressEvent(aWindow=%p, aGdkKeyEvent={ type=%s, "
"keyval=%s(0x%X), state=0x%08X, hardware_keycode=0x%08X, "
"time=%u, is_modifier=%s })",
aWindow,
((aGdkKeyEvent->type == GDK_KEY_PRESS) ? "GDK_KEY_PRESS"
: "GDK_KEY_RELEASE"),
gdk_keyval_name(aGdkKeyEvent->keyval), aGdkKeyEvent->keyval,
aGdkKeyEvent->state, aGdkKeyEvent->hardware_keycode,
aGdkKeyEvent->time, GetBoolName(aGdkKeyEvent->is_modifier)));
// if we are in the middle of composing text, XIM gets to see it
// before mozilla does.
// FYI: Don't dispatch keydown event before notifying IME of the event
// because IME may send a key event synchronously and consume the
// original event.
bool IMEWasEnabled = false;
KeyHandlingState handlingState = KeyHandlingState::eNotHandled;
RefPtr<IMContextWrapper> imContext = aWindow->GetIMContext();
if (imContext) {
IMEWasEnabled = imContext->IsEnabled();
handlingState = imContext->OnKeyEvent(aWindow, aGdkKeyEvent);
if (handlingState == KeyHandlingState::eHandled) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
(" HandleKeyPressEvent(), the event was handled by "
"IMContextWrapper"));
return;