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https://github.com/keymanapp/keyman.git
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96 lines
2.2 KiB
C++
96 lines
2.2 KiB
C++
/*
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Copyright: © SIL International.
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Description: Implementation for LDML Vkeys
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Create Date: 6 Oct 2022
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Authors: Steven R. Loomis
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*/
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#include "ldml_vkeys.hpp"
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#include "kmx_file.h"
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#include <ldml/keyman_core_ldml.h>
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namespace km {
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namespace core {
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namespace ldml {
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vkeys::vkeys() : vkey_to_string() {
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}
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void
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vkeys::add(km_core_virtual_key vk, uint16_t modifier_state, std::u16string output) {
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// construct key
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const vkey_id id(vk, modifier_state);
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// assign the string
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vkey_to_string[id] = output;
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}
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static const uint16_t BOTH_ALT = LALTFLAG | RALTFLAG;
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static const uint16_t BOTH_CTRL = LCTRLFLAG | RCTRLFLAG;
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std::u16string
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vkeys::lookup(km_core_virtual_key vk, uint16_t modifier_state, bool &found) const {
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const vkey_id id(vk, modifier_state);
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// try exact match first
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std::u16string ret = lookup(id, found);
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if (found) {
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return ret;
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}
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const bool have_ctrl = modifier_state & BOTH_CTRL;
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const bool have_alt = modifier_state & BOTH_ALT;
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// look for a layer with "alt" (either)
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if (have_alt) {
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const vkey_id id_alt(vk, (modifier_state & ~(BOTH_ALT)) | K_ALTFLAG);
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ret = lookup(id_alt, found);
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if (found) {
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return ret;
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}
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}
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// look for a layer with "ctrl" (either)
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if (have_ctrl) {
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const vkey_id id_ctrl(vk, (modifier_state & ~(BOTH_CTRL)) | K_CTRLFLAG);
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ret = lookup(id_ctrl, found);
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if (found) {
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return ret;
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}
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}
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// look for a layer with "alt ctrl" (either)
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if (have_ctrl && have_alt) {
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const vkey_id id_ctrl_alt(vk, (modifier_state & ~(BOTH_ALT | BOTH_CTRL)) | K_CTRLFLAG | K_ALTFLAG);
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ret = lookup(id_ctrl_alt, found);
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if (found) {
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return ret;
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}
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}
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// look for a layer with "other"
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{
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const vkey_id id_default(vk, (LDML_KEYS_MOD_OTHER));
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ret = lookup(id_default, found);
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if (found) {
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return ret;
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}
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}
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// default: return failure. found=false.
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return ret;
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}
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std::u16string
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vkeys::lookup(const vkey_id& id, bool &found) const {
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const auto key = vkey_to_string.find(id);
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if (key == vkey_to_string.end()) {
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found = false;
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return std::u16string(); // TODO-LDML: optimize object construction?
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}
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found = true;
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return key->second;
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}
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} // namespace ldml
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} // namespace core
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} // namespace km
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