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gecko-dev/widget/gtk/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 "mozilla/Logging.h"
#include "nsGtkKeyUtils.h"
#include <gdk/gdkkeysyms.h>
#include <algorithm>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#ifdef MOZ_WIDGET_GTK
#include <gdk/gdkkeysyms-compat.h>
#endif
#include <X11/XKBlib.h>
#include "WidgetUtils.h"
#include "keysym2ucs.h"
#include "nsContentUtils.h"
#include "nsGtkUtils.h"
#include "nsIBidiKeyboard.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TextEvents.h"
#ifdef MOZ_WAYLAND
#include <sys/mman.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;
KeymapWrapper::RepeatState KeymapWrapper::sRepeatState =
KeymapWrapper::NOT_PRESSED;
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 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)
{
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p Constructor, mGdkKeymap=%p",
this, mGdkKeymap));
g_object_ref(mGdkKeymap);
g_signal_connect(mGdkKeymap, "keys-changed",
(GCallback)OnKeysChanged, this);
g_signal_connect(mGdkKeymap, "direction-changed",
(GCallback)OnDirectionChanged, this);
if (GDK_IS_X11_DISPLAY(gdk_display_get_default()))
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 (GDK_IS_X11_DISPLAY(gdk_display_get_default()))
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));
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)
{
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 = wl_seat_get_keyboard(seat);
wl_keyboard_add_listener(keyboard, &keyboard_listener, nullptr);
} else if (keyboard && !(caps & WL_SEAT_CAPABILITY_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) {
wl_seat *seat =
(wl_seat*)wl_registry_bind(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()
{
// Available as of GTK 3.8+
static auto sGdkWaylandDisplayGetWlDisplay =
(wl_display *(*)(GdkDisplay *))
dlsym(RTLD_DEFAULT, "gdk_wayland_display_get_wl_display");
wl_display *display =
sGdkWaylandDisplayGetWlDisplay(gdk_display_get_default());
wl_registry_add_listener(wl_display_get_registry(display),
&keyboard_registry_listener, this);
// Call wl_display_roundtrip() twice to make sure all
// callbacks are processed.
wl_display_roundtrip(display);
wl_display_roundtrip(display);
}
#endif
KeymapWrapper::~KeymapWrapper()
{
gdk_window_remove_filter(nullptr, FilterEvents, this);
g_signal_handlers_disconnect_by_func(mGdkKeymap,
FuncToGpointer(OnKeysChanged), this);
g_signal_handlers_disconnect_by_func(mGdkKeymap,
FuncToGpointer(OnDirectionChanged), this);
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;
} else if (sLastRepeatableHardwareKeyCode == xEvent->xkey.keycode) {
sRepeatState = REPEATING;
} 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;
}
sLastRepeatableHardwareKeyCode = xEvent->xkey.keycode;
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;
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::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.
sInstance->mInitialized = false;
ResetBidiKeyboard();
}
// 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).
// See https://github.com/fcitx/fcitx/issues/257
//
// Also, when using ibus, switching to IM might not cause this signal.
// See https://github.com/ibus/ibus/issues/1848
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 */ void
KeymapWrapper::InitInputEvent(WidgetInputEvent& aInputEvent,
guint aModifierState)
{
KeymapWrapper* keymapWrapper = GetInstance();
aInputEvent.mModifiers = ComputeKeyModifiers(aModifierState);
MOZ_LOG(gKeymapWrapperLog, LogLevel::Debug,
("%p InitInputEvent, aModifierState=0x%08X, "
"aInputEvent.mModifiers=0x%04X (Shift: %s, Control: %s, Alt: %s, "
"Meta: %s, OS: %s, AltGr: %s, "
"CapsLock: %s, NumLock: %s, ScrollLock: %s)",
keymapWrapper, aModifierState, 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.buttons = 0;
if (aModifierState & GDK_BUTTON1_MASK) {
mouseEvent.buttons |= WidgetMouseEvent::eLeftButtonFlag;
}
if (aModifierState & GDK_BUTTON3_MASK) {
mouseEvent.buttons |= WidgetMouseEvent::eRightButtonFlag;
}
if (aModifierState & GDK_BUTTON2_MASK) {
mouseEvent.buttons |= WidgetMouseEvent::eMiddleButtonFlag;
}
MOZ_LOG(gKeymapWrapperLog, LogLevel::Debug,
("%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 & WidgetMouseEvent::eLeftButtonFlag),
GetBoolName(mouseEvent.buttons & WidgetMouseEvent::eRightButtonFlag),
GetBoolName(mouseEvent.buttons & WidgetMouseEvent::eMiddleButtonFlag),
GetBoolName(mouseEvent.buttons & WidgetMouseEvent::e4thButtonFlag),
GetBoolName(mouseEvent.buttons & WidgetMouseEvent::e5thButtonFlag)));
}
/* 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) {
// 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);
uint32_t 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.
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 */ void
KeymapWrapper::InitKeyEvent(WidgetKeyboardEvent& aKeyEvent,
GdkEventKey* aGdkKeyEvent,
bool aIsProcessedByIME)
{
MOZ_ASSERT(!aIsProcessedByIME || aKeyEvent.mMessage != eKeyPress,
"If the key event is handled by IME, keypress event shouldn't be fired");
KeymapWrapper* keymapWrapper = GetInstance();
aKeyEvent.mCodeNameIndex = ComputeDOMCodeNameIndex(aGdkKeyEvent);
MOZ_ASSERT(aKeyEvent.mCodeNameIndex != CODE_NAME_INDEX_USE_STRING);
aKeyEvent.mKeyNameIndex =
aIsProcessedByIME ? KEY_NAME_INDEX_Process :
keymapWrapper->ComputeDOMKeyNameIndex(aGdkKeyEvent);
if (aKeyEvent.mKeyNameIndex == KEY_NAME_INDEX_Unidentified) {
uint32_t charCode = GetCharCodeFor(aGdkKeyEvent);
if (!charCode) {
charCode = keymapWrapper->GetUnmodifiedCharCodeFor(aGdkKeyEvent);
}
if (charCode) {
aKeyEvent.mKeyNameIndex = KEY_NAME_INDEX_USE_STRING;
MOZ_ASSERT(aKeyEvent.mKeyValue.IsEmpty(),
"Uninitialized mKeyValue must be empty");
AppendUCS4ToUTF16(charCode, aKeyEvent.mKeyValue);
}
}
if (aIsProcessedByIME) {
aKeyEvent.mKeyCode = NS_VK_PROCESSKEY;
} else if (aKeyEvent.mKeyNameIndex != KEY_NAME_INDEX_USE_STRING ||
aKeyEvent.mMessage != eKeyPress) {
aKeyEvent.mKeyCode = ComputeDOMKeyCode(aGdkKeyEvent);
} else {
aKeyEvent.mKeyCode = 0;
}
// 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.
guint modifierState = aGdkKeyEvent->state;
GdkDisplay* gdkDisplay = gdk_display_get_default();
if (aGdkKeyEvent->is_modifier && GDK_IS_X11_DISPLAY(gdkDisplay)) {
Display* display =
gdk_x11_display_get_xdisplay(gdkDisplay);
if (XEventsQueued(display, QueuedAfterReading)) {
XEvent nextEvent;
XPeekEvent(display, &nextEvent);
if (nextEvent.type == keymapWrapper->mXKBBaseEventCode) {
XkbEvent* XKBEvent = (XkbEvent*)&nextEvent;
if (XKBEvent->any.xkb_type == XkbStateNotify) {
XkbStateNotifyEvent* stateNotifyEvent =
(XkbStateNotifyEvent*)XKBEvent;
modifierState &= ~0xFF;
modifierState |= stateNotifyEvent->lookup_mods;
}
}
}
}
InitInputEvent(aKeyEvent, modifierState);
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.mLocation = eKeyLocationLeft;
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.mLocation = eKeyLocationRight;
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.mLocation = eKeyLocationNumpad;
break;
default:
aKeyEvent.mLocation = eKeyLocationStandard;
break;
}
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%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.mMessage == eKeyDown) ? "eKeyDown" :
(aKeyEvent.mMessage == eKeyPress) ? "eKeyPress" : "eKeyUp"),
GetBoolName(aKeyEvent.IsShift()), GetBoolName(aKeyEvent.IsControl()),
GetBoolName(aKeyEvent.IsAlt()), GetBoolName(aKeyEvent.IsMeta())));
// 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.mPluginEvent.Copy(*aGdkKeyEvent);
aKeyEvent.mTime = aGdkKeyEvent->time;
aKeyEvent.mNativeKeyEvent = static_cast<void*>(aGdkKeyEvent);
aKeyEvent.mIsRepeat = sRepeatState == REPEATING &&
aGdkKeyEvent->hardware_keycode == sLastRepeatableHardwareKeyCode;
}
/* static */ uint32_t
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;
}
uint32_t
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, nullptr, nullptr, nullptr)) {
return 0;
}
GdkEventKey tmpEvent = *aGdkKeyEvent;
tmpEvent.state = aModifierState;
tmpEvent.keyval = keyval;
tmpEvent.group = aGroup;
return GetCharCodeFor(&tmpEvent);
}
uint32_t
KeymapWrapper::GetUnmodifiedCharCodeFor(const GdkEventKey* aGdkKeyEvent)
{
guint state = aGdkKeyEvent->state &
(GetModifierMask(SHIFT) | GetModifierMask(CAPS_LOCK) |
GetModifierMask(NUM_LOCK) | GetModifierMask(SCROLL_LOCK) |
GetModifierMask(LEVEL3) | GetModifierMask(LEVEL5));
uint32_t charCode = GetCharCodeFor(aGdkKeyEvent, GdkModifierType(state),
aGdkKeyEvent->group);
if (charCode) {
return charCode;
}
// If no character is mapped to the key when Level3 Shift or Level5 Shift
// is active, let's return a character which is inputted by the key without
// Level3 nor Level5 Shift.
guint stateWithoutAltGraph =
state & ~(GetModifierMask(LEVEL3) | GetModifierMask(LEVEL5));
if (state == stateWithoutAltGraph) {
return 0;
}
return GetCharCodeFor(aGdkKeyEvent, GdkModifierType(stateWithoutAltGraph),
aGdkKeyEvent->group);
}
gint
KeymapWrapper::GetKeyLevel(GdkEventKey *aGdkKeyEvent)
{
gint level;
if (!gdk_keymap_translate_keyboard_state(mGdkKeymap,
aGdkKeyEvent->hardware_keycode,
GdkModifierType(aGdkKeyEvent->state),
aGdkKeyEvent->group, nullptr, nullptr, &level, nullptr)) {
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;
}
bool
KeymapWrapper::IsAutoRepeatableKey(guint aHardwareKeyCode)
{
uint8_t indexOfArray = aHardwareKeyCode / 8;
MOZ_ASSERT(indexOfArray < ArrayLength(mKeyboardState.auto_repeats),
"invalid index");
char bitMask = 1 << (aHardwareKeyCode % 8);
return (mKeyboardState.auto_repeats[indexOfArray] & bitMask) != 0;
}
/* static */ bool
KeymapWrapper::IsBasicLatinLetterOrNumeral(uint32_t 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, nullptr, nullptr, nullptr)) {
return 0;
}
return keyval;
}
/* static */ uint32_t
KeymapWrapper::GetDOMKeyCodeFromKeyPairs(guint aGdkKeyval)
{
switch (aGdkKeyval) {
case GDK_Cancel: return NS_VK_CANCEL;
case GDK_BackSpace: return NS_VK_BACK;
case GDK_Tab:
case GDK_ISO_Left_Tab: return NS_VK_TAB;
case GDK_Clear: return NS_VK_CLEAR;
case GDK_Return: return NS_VK_RETURN;
case GDK_Shift_L:
case GDK_Shift_R:
case GDK_Shift_Lock: return NS_VK_SHIFT;
case GDK_Control_L:
case GDK_Control_R: return NS_VK_CONTROL;
case GDK_Alt_L:
case GDK_Alt_R: return NS_VK_ALT;
case GDK_Meta_L:
case GDK_Meta_R: return NS_VK_META;
// Assume that Super or Hyper is always mapped to physical Win key.
case GDK_Super_L:
case GDK_Super_R:
case GDK_Hyper_L:
case GDK_Hyper_R: return NS_VK_WIN;
// 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.
case GDK_ISO_Level3_Shift:
case GDK_ISO_Level5_Shift:
// We assume that Mode_switch is always used for level3 shift.
case GDK_Mode_switch: return NS_VK_ALTGR;
case GDK_Pause: return NS_VK_PAUSE;
case GDK_Caps_Lock: return NS_VK_CAPS_LOCK;
case GDK_Kana_Lock:
case GDK_Kana_Shift: return NS_VK_KANA;
case GDK_Hangul: return NS_VK_HANGUL;
// case GDK_XXX: return NS_VK_JUNJA;
// case GDK_XXX: return NS_VK_FINAL;
case GDK_Hangul_Hanja: return NS_VK_HANJA;
case GDK_Kanji: return NS_VK_KANJI;
case GDK_Escape: return NS_VK_ESCAPE;
case GDK_Henkan: return NS_VK_CONVERT;
case GDK_Muhenkan: return NS_VK_NONCONVERT;
// case GDK_XXX: return NS_VK_ACCEPT;
// case GDK_XXX: return NS_VK_MODECHANGE;
case GDK_Page_Up: return NS_VK_PAGE_UP;
case GDK_Page_Down: return NS_VK_PAGE_DOWN;
case GDK_End: return NS_VK_END;
case GDK_Home: return NS_VK_HOME;
case GDK_Left: return NS_VK_LEFT;
case GDK_Up: return NS_VK_UP;
case GDK_Right: return NS_VK_RIGHT;
case GDK_Down: return NS_VK_DOWN;
case GDK_Select: return NS_VK_SELECT;
case GDK_Print: return NS_VK_PRINT;
case GDK_Execute: return NS_VK_EXECUTE;
case GDK_Insert: return NS_VK_INSERT;
case GDK_Delete: return NS_VK_DELETE;
case GDK_Help: return NS_VK_HELP;
// keypad keys
case GDK_KP_Left: return NS_VK_LEFT;
case GDK_KP_Right: return NS_VK_RIGHT;
case GDK_KP_Up: return NS_VK_UP;
case GDK_KP_Down: return NS_VK_DOWN;
case GDK_KP_Page_Up: return NS_VK_PAGE_UP;
// Not sure what these are
// case GDK_KP_Prior: return NS_VK_;
// case GDK_KP_Next: return NS_VK_;
case GDK_KP_Begin: return NS_VK_CLEAR; // Num-unlocked 5
case GDK_KP_Page_Down: return NS_VK_PAGE_DOWN;
case GDK_KP_Home: return NS_VK_HOME;
case GDK_KP_End: return NS_VK_END;
case GDK_KP_Insert: return NS_VK_INSERT;
case GDK_KP_Delete: return NS_VK_DELETE;
case GDK_KP_Enter: return NS_VK_RETURN;
case GDK_Num_Lock: return NS_VK_NUM_LOCK;
case GDK_Scroll_Lock: return NS_VK_SCROLL_LOCK;
// Function keys
case GDK_F1: return NS_VK_F1;
case GDK_F2: return NS_VK_F2;
case GDK_F3: return NS_VK_F3;
case GDK_F4: return NS_VK_F4;
case GDK_F5: return NS_VK_F5;
case GDK_F6: return NS_VK_F6;
case GDK_F7: return NS_VK_F7;
case GDK_F8: return NS_VK_F8;
case GDK_F9: return NS_VK_F9;
case GDK_F10: return NS_VK_F10;
case GDK_F11: return NS_VK_F11;
case GDK_F12: return NS_VK_F12;
case GDK_F13: return NS_VK_F13;
case GDK_F14: return NS_VK_F14;
case GDK_F15: return NS_VK_F15;
case GDK_F16: return NS_VK_F16;
case GDK_F17: return NS_VK_F17;
case GDK_F18: return NS_VK_F18;
case GDK_F19: return NS_VK_F19;
case GDK_F20: return NS_VK_F20;
case GDK_F21: return NS_VK_F21;
case GDK_F22: return NS_VK_F22;
case GDK_F23: return NS_VK_F23;
case GDK_F24: return NS_VK_F24;
// context menu key, keysym 0xff67, typically keycode 117 on 105-key
// (Microsoft) x86 keyboards, located between right 'Windows' key and
// right Ctrl key
case GDK_Menu: return NS_VK_CONTEXT_MENU;
case GDK_Sleep: return NS_VK_SLEEP;
case GDK_3270_Attn: return NS_VK_ATTN;
case GDK_3270_CursorSelect: return NS_VK_CRSEL;
case GDK_3270_ExSelect: return NS_VK_EXSEL;
case GDK_3270_EraseEOF: return NS_VK_EREOF;
case GDK_3270_Play: return NS_VK_PLAY;
// case GDK_XXX: return NS_VK_ZOOM;
case GDK_3270_PA1: return NS_VK_PA1;
// map Sun Keyboard special keysyms on to NS_VK keys
// Sun F11 key generates SunF36(0x1005ff10) keysym
case 0x1005ff10: return NS_VK_F11;
// Sun F12 key generates SunF37(0x1005ff11) keysym
case 0x1005ff11: return NS_VK_F12;
default: return 0;
}
}
void
KeymapWrapper::WillDispatchKeyboardEvent(WidgetKeyboardEvent& aKeyEvent,
GdkEventKey* aGdkKeyEvent)
{
GetInstance()->WillDispatchKeyboardEventInternal(aKeyEvent, aGdkKeyEvent);
}
void
KeymapWrapper::WillDispatchKeyboardEventInternal(WidgetKeyboardEvent& aKeyEvent,
GdkEventKey* aGdkKeyEvent)
{
if (!aGdkKeyEvent) {
// If aGdkKeyEvent is nullptr, we're trying to dispatch a fake keyboard
// event in such case, we don't need to set alternative char codes.
// So, we don't need to do nothing here. This case is typically we're
// dispatching eKeyDown or eKeyUp event during composition.
return;
}
uint32_t charCode = GetCharCodeFor(aGdkKeyEvent);
if (!charCode) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p WillDispatchKeyboardEventInternal, "
"mKeyCode=0x%02X, charCode=0x%08X",
this, aKeyEvent.mKeyCode, aKeyEvent.mCharCode));
return;
}
// The mCharCode was set from mKeyValue. However, for example, when Ctrl key
// is pressed, its value should indicate an ASCII character for backward
// compatibility rather than inputting character without the modifiers.
// Therefore, we need to modify mCharCode value here.
aKeyEvent.SetCharCode(charCode);
gint level = GetKeyLevel(aGdkKeyEvent);
if (level != 0 && level != 1) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p WillDispatchKeyboardEventInternal, "
"mKeyCode=0x%02X, mCharCode=0x%08X, level=%d",
this, aKeyEvent.mKeyCode, aKeyEvent.mCharCode, 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.mCharCode. On some keyboard
// layouts, Ctrl/Alt/Meta keys are used for inputting some characters.
AlternativeCharCode 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.mAlternativeCharCodes.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) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p WillDispatchKeyboardEventInternal, "
"mKeyCode=0x%02X, mCharCode=0x%08X, level=%d, altCharCodes={ "
"mUnshiftedCharCode=0x%08X, mShiftedCharCode=0x%08X }",
this, aKeyEvent.mKeyCode, aKeyEvent.mCharCode, level,
altCharCodes.mUnshiftedCharCode, altCharCodes.mShiftedCharCode));
return;
}
// Next, find Latin inputtable keyboard layout.
gint minGroup = GetFirstLatinGroup();
if (minGroup < 0) {
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p WillDispatchKeyboardEventInternal, "
"Latin keyboard layout isn't found: "
"mKeyCode=0x%02X, mCharCode=0x%08X, level=%d, "
"altCharCodes={ mUnshiftedCharCode=0x%08X, "
"mShiftedCharCode=0x%08X }",
this, aKeyEvent.mKeyCode, aKeyEvent.mCharCode, level,
altCharCodes.mUnshiftedCharCode, altCharCodes.mShiftedCharCode));
return;
}
AlternativeCharCode 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.mAlternativeCharCodes.AppendElement(altLatinCharCodes);
}
// If the mCharCode is not Latin, and the level is 0 or 1, we should
// replace the mCharCode 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()) &&
charCode == unmodifiedCh) {
aKeyEvent.SetCharCode(ch);
}
MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
("%p WillDispatchKeyboardEventInternal, "
"mKeyCode=0x%02X, mCharCode=0x%08X, level=%d, minGroup=%d, "
"altCharCodes={ mUnshiftedCharCode=0x%08X, "
"mShiftedCharCode=0x%08X } "
"altLatinCharCodes={ mUnshiftedCharCode=0x%08X, "
"mShiftedCharCode=0x%08X }",
this, aKeyEvent.mKeyCode, aKeyEvent.mCharCode, level, minGroup,
altCharCodes.mUnshiftedCharCode, altCharCodes.mShiftedCharCode,
altLatinCharCodes.mUnshiftedCharCode,
altLatinCharCodes.mShiftedCharCode));
}
} // namespace widget
} // namespace mozilla
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