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- // Copyright 2020 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "components/exo/xkb_tracker.h"
- #if BUILDFLAG(USE_XKBCOMMON)
- #include "components/exo/keyboard_modifiers.h"
- #include "ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h"
- #endif
- namespace exo {
- #if BUILDFLAG(USE_XKBCOMMON)
- XkbTracker::XkbTracker() {
- UpdateKeyboardLayoutInternal(nullptr);
- UpdateKeyboardModifiersInternal();
- }
- #else
- XkbTracker::XkbTracker() = default;
- #endif
- XkbTracker::~XkbTracker() = default;
- #if BUILDFLAG(USE_XKBCOMMON)
- void XkbTracker::UpdateKeyboardLayout(const std::string& name) {
- std::string layout_id, layout_variant;
- ui::XkbKeyboardLayoutEngine::ParseLayoutName(name, &layout_id,
- &layout_variant);
- xkb_rule_names names = {.rules = nullptr,
- .model = "pc101",
- .layout = layout_id.c_str(),
- .variant = layout_variant.c_str(),
- .options = ""};
- UpdateKeyboardLayoutInternal(&names);
- UpdateKeyboardModifiersInternal();
- }
- void XkbTracker::UpdateKeyboardModifiers(int modifier_flags) {
- // CrOS treats numlock as always on, but its event flags actually have that
- // key disabled, (i.e. chromeos apps specially handle numpad key events as
- // though numlock is on). In order to get the same result from the linux apps,
- // we need to ensure they always treat numlock as on.
- modifier_flags_ = modifier_flags | ui::EF_NUM_LOCK_ON;
- UpdateKeyboardModifiersInternal();
- }
- uint32_t XkbTracker::GetKeysym(uint32_t xkb_keycode) const {
- return xkb_state_key_get_one_sym(xkb_state_.get(), xkb_keycode);
- }
- std::unique_ptr<char, base::FreeDeleter> XkbTracker::GetKeymap() const {
- return std::unique_ptr<char, base::FreeDeleter>(
- xkb_keymap_get_as_string(xkb_keymap_.get(), XKB_KEYMAP_FORMAT_TEXT_V1));
- }
- KeyboardModifiers XkbTracker::GetModifiers() const {
- return {
- xkb_state_serialize_mods(xkb_state_.get(), XKB_STATE_MODS_DEPRESSED),
- xkb_state_serialize_mods(xkb_state_.get(), XKB_STATE_MODS_LOCKED),
- xkb_state_serialize_mods(xkb_state_.get(), XKB_STATE_MODS_LATCHED),
- xkb_state_serialize_layout(xkb_state_.get(), XKB_STATE_LAYOUT_EFFECTIVE),
- };
- }
- void XkbTracker::UpdateKeyboardLayoutInternal(const xkb_rule_names* names) {
- xkb_keymap_.reset(xkb_keymap_new_from_names(xkb_context_.get(), names,
- XKB_KEYMAP_COMPILE_NO_FLAGS));
- xkb_state_.reset(xkb_state_new(xkb_keymap_.get()));
- xkb_modifier_converter_ =
- ui::XkbModifierConverter::CreateFromKeymap(xkb_keymap_.get());
- }
- void XkbTracker::UpdateKeyboardModifiersInternal() {
- xkb_mod_mask_t xkb_modifiers =
- xkb_modifier_converter_.MaskFromUiFlags(modifier_flags_);
- xkb_state_update_mask(xkb_state_.get(), xkb_modifiers, 0, 0, 0, 0, 0);
- }
- #endif // BUILDFLAG(USE_XKBCOMMON)
- } // namespace exo
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