139 lines
4.3 KiB
TypeScript
139 lines
4.3 KiB
TypeScript
import {KeyEvent as NKeyEvent, RegisterCallback, UnregisterCallback} from "tc-native/ppt";
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import {EventType, KeyEvent, KeyHook, SpecialKey} from "tc-shared/PPTListener";
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import {tr} from "tc-shared/i18n/localize";
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import {LogCategory, logTrace} from "tc-shared/log";
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import * as log from "tc-shared/log";
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let key_listener: ((_: KeyEvent) => any)[] = [];
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function listener_key(type: EventType, nevent: NKeyEvent) {
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if(nevent.key_code === 'VoidSymbol' || nevent.key_code === 'error')
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nevent.key_code = undefined; /* trigger event for state update */
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let event: KeyEvent = {
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type: type,
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key: nevent.key_code,
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key_code: nevent.key_code,
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key_ctrl: nevent.key_ctrl,
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key_shift: nevent.key_shift,
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key_alt: nevent.key_alt,
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key_windows: nevent.key_windows
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} as any;
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for (const listener of key_listener)
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listener && listener(event);
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}
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function native_keyhook(event: NKeyEvent) {
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//console.log("Native event!: %o", event);
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if(event.type == 0)
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listener_key(EventType.KEY_PRESS, event);
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else if(event.type == 1)
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listener_key(EventType.KEY_RELEASE, event);
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else if(event.type == 2)
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listener_key(EventType.KEY_TYPED, event);
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else
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console.warn(tr("Received unknown native event: %o"), event);
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}
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export async function initialize() : Promise<void> {
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register_key_listener(listener_hook);
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RegisterCallback(native_keyhook);
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}
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export function finalize() {
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unregister_key_listener(listener_hook);
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UnregisterCallback(native_keyhook);
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}
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export function register_key_listener(listener: (_: KeyEvent) => any) {
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key_listener.push(listener);
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}
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export function unregister_key_listener(listener: (_: KeyEvent) => any) {
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const index = key_listener.findIndex(e => e === listener);
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if(index !== -1) key_listener.splice(index, 1);
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}
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let key_hooks: KeyHook[] = [];
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interface CurrentState {
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keys: {[code: string]:KeyEvent};
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special: { [key:number]:boolean };
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}
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let current_state: CurrentState = {
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special: []
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} as any;
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let key_hooks_active: KeyHook[] = [];
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function listener_hook(event: KeyEvent) {
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if(event.type == EventType.KEY_TYPED)
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return;
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let old_hooks = [...key_hooks_active];
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let new_hooks = [];
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current_state.special[SpecialKey.ALT] = event.key_alt;
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current_state.special[SpecialKey.CTRL] = event.key_ctrl;
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current_state.special[SpecialKey.SHIFT] = event.key_shift;
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current_state.special[SpecialKey.WINDOWS] = event.key_windows;
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current_state[event.key_code] = undefined;
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if(event.type == EventType.KEY_PRESS) {
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current_state[event.key_code] = event;
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for(const hook of key_hooks) {
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if(hook.key_code !== event.key_code) continue;
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if(hook.key_alt != event.key_alt) continue;
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if(hook.key_ctrl != event.key_ctrl) continue;
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if(hook.key_shift != event.key_shift) continue;
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if(hook.key_windows != event.key_windows) continue;
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new_hooks.push(hook);
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const index = old_hooks.findIndex(e => e === hook);
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if(index === -1 && hook.callback_press) {
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hook.callback_press();
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logTrace(LogCategory.GENERAL, tr("Trigger key press for %o!"), hook);
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}
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}
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}
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//We have a new situation
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for(const hook of old_hooks) {
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//Do not test for meta key states because they could differ in a key release event
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if(hook.key_code === event.key_code) {
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if(hook.callback_release) {
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hook.callback_release();
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logTrace(LogCategory.GENERAL, tr("Trigger key release for %o!"), hook);
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}
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} else {
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new_hooks.push(hook);
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}
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}
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key_hooks_active = new_hooks;
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}
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export function register_key_hook(hook: KeyHook) {
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key_hooks.push(hook);
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}
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export function unregister_key_hook(hook: KeyHook) {
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let index;
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index = key_hooks.findIndex(e => e === hook);
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if(index !== -1) key_hooks.splice(index, 1);
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index = key_hooks_active.findIndex(e => e === hook);
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if(index !== -1) key_hooks_active.splice(index, 1);
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}
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export function key_pressed(code: string | SpecialKey) : boolean {
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if(typeof(code) === 'string')
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return typeof(current_state[code]) === "object";
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return current_state.special[code];
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} |