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-rw-r--r--widget/gtk/nsGtkKeyUtils.cpp2377
1 files changed, 2377 insertions, 0 deletions
diff --git a/widget/gtk/nsGtkKeyUtils.cpp b/widget/gtk/nsGtkKeyUtils.cpp
new file mode 100644
index 0000000000..41a679eab7
--- /dev/null
+++ b/widget/gtk/nsGtkKeyUtils.cpp
@@ -0,0 +1,2377 @@
+/* -*- 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 "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).
+ // 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);
+
+ // 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;
+ }
+ }
+
+ // work around for annoying things.
+ if (aGdkKeyEvent->keyval == GDK_Tab &&
+ AreModifiersActive(CTRL | ALT, aGdkKeyEvent->state)) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), didn't dispatch keyboard events "
+ "because it's Ctrl + Alt + Tab"));
+ return;
+ }
+
+ // Dispatch keydown event always. At auto repeating, we should send
+ // KEYDOWN -> KEYPRESS -> KEYDOWN -> KEYPRESS ... -> KEYUP
+ // However, old distributions (e.g., Ubuntu 9.10) sent native key
+ // release event, so, on such platform, the DOM events will be:
+ // KEYDOWN -> KEYPRESS -> KEYUP -> KEYDOWN -> KEYPRESS -> KEYUP...
+
+ bool isKeyDownCancelled = false;
+ if (handlingState == KeyHandlingState::eNotHandled) {
+ if (DispatchKeyDownOrKeyUpEvent(aWindow, aGdkKeyEvent, false,
+ &isKeyDownCancelled) &&
+ (MOZ_UNLIKELY(aWindow->IsDestroyed()) || isKeyDownCancelled)) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched eKeyDown event and "
+ "stopped handling the event because %s",
+ aWindow->IsDestroyed() ? "the window has been destroyed"
+ : "the event was consumed"));
+ return;
+ }
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched eKeyDown event and "
+ "it wasn't consumed"));
+ handlingState = KeyHandlingState::eNotHandledButEventDispatched;
+ }
+
+ // If a keydown event handler causes to enable IME, i.e., it moves
+ // focus from IME unusable content to IME usable editor, we should
+ // send the native key event to IME for the first input on the editor.
+ imContext = aWindow->GetIMContext();
+ if (!IMEWasEnabled && imContext && imContext->IsEnabled()) {
+ // Notice our keydown event was already dispatched. This prevents
+ // unnecessary DOM keydown event in the editor.
+ handlingState = imContext->OnKeyEvent(aWindow, aGdkKeyEvent, true);
+ if (handlingState == KeyHandlingState::eHandled) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), the event was handled by "
+ "IMContextWrapper which was enabled by the preceding eKeyDown "
+ "event"));
+ return;
+ }
+ }
+
+ // Look for specialized app-command keys
+ switch (aGdkKeyEvent->keyval) {
+ case GDK_Back:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Back);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Back\" command event"));
+ return;
+ case GDK_Forward:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Forward);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Forward\" command "
+ "event"));
+ return;
+ case GDK_Reload:
+ case GDK_Refresh:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Reload);
+ return;
+ case GDK_Stop:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Stop);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Stop\" command event"));
+ return;
+ case GDK_Search:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Search);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Search\" command event"));
+ return;
+ case GDK_Favorites:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Bookmarks);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Bookmarks\" command "
+ "event"));
+ return;
+ case GDK_HomePage:
+ aWindow->DispatchCommandEvent(nsGkAtoms::Home);
+ return;
+ case GDK_Copy:
+ case GDK_F16: // F16, F20, F18, F14 are old keysyms for Copy Cut Paste Undo
+ aWindow->DispatchContentCommandEvent(eContentCommandCopy);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Copy\" content command "
+ "event"));
+ return;
+ case GDK_Cut:
+ case GDK_F20:
+ aWindow->DispatchContentCommandEvent(eContentCommandCut);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Cut\" content command "
+ "event"));
+ return;
+ case GDK_Paste:
+ case GDK_F18:
+ aWindow->DispatchContentCommandEvent(eContentCommandPaste);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Paste\" content command "
+ "event"));
+ return;
+ case GDK_Redo:
+ aWindow->DispatchContentCommandEvent(eContentCommandRedo);
+ return;
+ case GDK_Undo:
+ case GDK_F14:
+ aWindow->DispatchContentCommandEvent(eContentCommandUndo);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched \"Undo\" content command "
+ "event"));
+ return;
+ default:
+ break;
+ }
+
+ // before we dispatch a key, check if it's the context menu key.
+ // If so, send a context menu key event instead.
+ if (MaybeDispatchContextMenuEvent(aWindow, aGdkKeyEvent)) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), stopped dispatching eKeyPress event "
+ "because eContextMenu event was dispatched"));
+ return;
+ }
+
+ RefPtr<TextEventDispatcher> textEventDispatcher =
+ aWindow->GetTextEventDispatcher();
+ nsresult rv = textEventDispatcher->BeginNativeInputTransaction();
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Error,
+ (" HandleKeyPressEvent(), stopped dispatching eKeyPress event "
+ "because of failed to initialize TextEventDispatcher"));
+ return;
+ }
+
+ // If the character code is in the BMP, send the key press event.
+ // Otherwise, send a compositionchange event with the equivalent UTF-16
+ // string.
+ // TODO: Investigate other browser's behavior in this case because
+ // this hack is odd for UI Events.
+ WidgetKeyboardEvent keypressEvent(true, eKeyPress, aWindow);
+ KeymapWrapper::InitKeyEvent(keypressEvent, aGdkKeyEvent, false);
+ nsEventStatus status = nsEventStatus_eIgnore;
+ if (keypressEvent.mKeyNameIndex != KEY_NAME_INDEX_USE_STRING ||
+ keypressEvent.mKeyValue.Length() == 1) {
+ if (textEventDispatcher->MaybeDispatchKeypressEvents(keypressEvent, status,
+ aGdkKeyEvent)) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched eKeyPress event "
+ "(status=%s)",
+ GetStatusName(status)));
+ } else {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), didn't dispatch eKeyPress event "
+ "(status=%s)",
+ GetStatusName(status)));
+ }
+ } else {
+ WidgetEventTime eventTime = aWindow->GetWidgetEventTime(aGdkKeyEvent->time);
+ textEventDispatcher->CommitComposition(status, &keypressEvent.mKeyValue,
+ &eventTime);
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyPressEvent(), dispatched a set of composition "
+ "events"));
+ }
+}
+
+/* static */
+bool KeymapWrapper::HandleKeyReleaseEvent(nsWindow* aWindow,
+ GdkEventKey* aGdkKeyEvent) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ ("HandleKeyReleaseEvent(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)));
+
+ RefPtr<IMContextWrapper> imContext = aWindow->GetIMContext();
+ if (imContext) {
+ KeyHandlingState handlingState =
+ imContext->OnKeyEvent(aWindow, aGdkKeyEvent);
+ if (handlingState != KeyHandlingState::eNotHandled) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyReleaseEvent(), the event was handled by "
+ "IMContextWrapper"));
+ return true;
+ }
+ }
+
+ bool isCancelled = false;
+ if (NS_WARN_IF(!DispatchKeyDownOrKeyUpEvent(aWindow, aGdkKeyEvent, false,
+ &isCancelled))) {
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Error,
+ (" HandleKeyReleaseEvent(), didn't dispatch eKeyUp event"));
+ return false;
+ }
+
+ MOZ_LOG(gKeymapWrapperLog, LogLevel::Info,
+ (" HandleKeyReleaseEvent(), dispatched eKeyUp event "
+ "(isCancelled=%s)",
+ GetBoolName(isCancelled)));
+ return true;
+}
+
+/* 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;
+ }
+
+ // 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;
+
+ MOZ_LOG(
+ gKeymapWrapperLog, LogLevel::Info,
+ ("%p InitKeyEvent, modifierState=0x%08X "
+ "aKeyEvent={ mMessage=%s, isShift=%s, isControl=%s, "
+ "isAlt=%s, isMeta=%s , mKeyCode=0x%02X, mCharCode=%s, "
+ "mKeyNameIndex=%s, mKeyValue=%s, mCodeNameIndex=%s, mCodeValue=%s, "
+ "mLocation=%s, mIsRepeat=%s }",
+ keymapWrapper, modifierState, ToChar(aKeyEvent.mMessage),
+ GetBoolName(aKeyEvent.IsShift()), GetBoolName(aKeyEvent.IsControl()),
+ GetBoolName(aKeyEvent.IsAlt()), GetBoolName(aKeyEvent.IsMeta()),
+ aKeyEvent.mKeyCode,
+ GetCharacterCodeName(static_cast<char16_t>(aKeyEvent.mCharCode)).get(),
+ ToString(aKeyEvent.mKeyNameIndex).get(),
+ GetCharacterCodeNames(aKeyEvent.mKeyValue).get(),
+ ToString(aKeyEvent.mCodeNameIndex).get(),
+ GetCharacterCodeNames(aKeyEvent.mCodeValue).get(),
+ GetKeyLocationName(aKeyEvent.mLocation).get(),
+ GetBoolName(aKeyEvent.mIsRepeat)));
+}
+
+/* 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
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 16:41:59 +0000