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/*
* MIT License
*
* Copyright (c) 2020 Joey Castillo
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "watch_extint.h"
#include <emscripten.h>
#include <emscripten/html5.h>
static bool output_focused = false;
static bool external_interrupt_enabled = false;
static bool button_callbacks_installed = false;
static ext_irq_cb_t external_interrupt_mode_callback = NULL;
static watch_interrupt_trigger external_interrupt_mode_trigger = INTERRUPT_TRIGGER_NONE;
static ext_irq_cb_t external_interrupt_light_callback = NULL;
static watch_interrupt_trigger external_interrupt_light_trigger = INTERRUPT_TRIGGER_NONE;
static ext_irq_cb_t external_interrupt_alarm_callback = NULL;
static watch_interrupt_trigger external_interrupt_alarm_trigger = INTERRUPT_TRIGGER_NONE;
#define BTN_ID_ALARM 3
#define BTN_ID_LIGHT 1
#define BTN_ID_MODE 2
static const uint8_t BTN_IDS[] = { BTN_ID_ALARM, BTN_ID_LIGHT, BTN_ID_MODE };
static void watch_invoke_interrupt_callback(const uint8_t button_id, watch_interrupt_trigger trigger);
static EM_BOOL watch_invoke_key_callback(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData) {
if (output_focused || keyEvent->repeat) return EM_FALSE;
const char *key = keyEvent->key;
if (key[1] != 0) return EM_FALSE;
uint8_t button_id;
switch (key[0]) {
case 'A':
case 'a':
button_id = BTN_ID_ALARM;
break;
case 'L':
case 'l':
button_id = BTN_ID_LIGHT;
break;
case 'M':
case 'm':
button_id = BTN_ID_MODE;
break;
default:
return EM_FALSE;
}
watch_interrupt_trigger trigger = eventType == EMSCRIPTEN_EVENT_KEYDOWN ? INTERRUPT_TRIGGER_RISING : INTERRUPT_TRIGGER_FALLING;
watch_invoke_interrupt_callback(button_id, trigger);
return EM_TRUE;
}
static EM_BOOL watch_invoke_mouse_callback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData) {
if (eventType == EMSCRIPTEN_EVENT_MOUSEOUT && mouseEvent->buttons == 0) return EM_FALSE;
uint8_t button_id = *(const char *)userData;
watch_interrupt_trigger trigger = eventType == EMSCRIPTEN_EVENT_MOUSEDOWN ? INTERRUPT_TRIGGER_RISING : INTERRUPT_TRIGGER_FALLING;
watch_invoke_interrupt_callback(button_id, trigger);
return EM_TRUE;
}
static EM_BOOL watch_invoke_touch_callback(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData) {
uint8_t button_id = *(const char *)userData;
watch_interrupt_trigger trigger = eventType == EMSCRIPTEN_EVENT_TOUCHSTART ? INTERRUPT_TRIGGER_RISING : INTERRUPT_TRIGGER_FALLING;
watch_invoke_interrupt_callback(button_id, trigger);
return EM_TRUE;
}
static EM_BOOL watch_invoke_focus_callback(int eventType, const EmscriptenFocusEvent *focusEvent, void *userData) {
output_focused = eventType == EMSCRIPTEN_EVENT_FOCUS;
return EM_TRUE;
}
static void watch_install_button_callbacks(void) {
emscripten_set_keydown_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, NULL, EM_FALSE, watch_invoke_key_callback);
emscripten_set_keyup_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, NULL, EM_FALSE, watch_invoke_key_callback);
const char *target_output = "#output";
emscripten_set_focus_callback(target_output, NULL, EM_FALSE, watch_invoke_focus_callback);
emscripten_set_blur_callback(target_output, NULL, EM_FALSE, watch_invoke_focus_callback);
for (int i = 0, count = sizeof(BTN_IDS) / sizeof(BTN_IDS[0]); i < count; i++) {
char target[] = "#btn_";
target[4] = BTN_IDS[i] + '0';
emscripten_set_mousedown_callback(target, (void *)&BTN_IDS[i], EM_FALSE, watch_invoke_mouse_callback);
emscripten_set_mouseup_callback(target, (void *)&BTN_IDS[i], EM_FALSE, watch_invoke_mouse_callback);
emscripten_set_mouseout_callback(target, (void *)&BTN_IDS[i], EM_FALSE, watch_invoke_mouse_callback);
emscripten_set_touchstart_callback(target, (void *)&BTN_IDS[i], EM_FALSE, watch_invoke_touch_callback);
emscripten_set_touchend_callback(target, (void *)&BTN_IDS[i], EM_FALSE, watch_invoke_touch_callback);
}
}
void watch_enable_external_interrupts(void) {
external_interrupt_enabled = true;
if (!button_callbacks_installed) {
watch_install_button_callbacks();
button_callbacks_installed = true;
}
}
void watch_disable_external_interrupts(void) {
external_interrupt_enabled = false;
}
static void watch_invoke_interrupt_callback(const uint8_t button_id, watch_interrupt_trigger event) {
if (!external_interrupt_enabled) return;
ext_irq_cb_t callback;
watch_interrupt_trigger trigger;
uint8_t pin;
switch (button_id) {
case BTN_ID_MODE:
pin = BTN_MODE;
callback = external_interrupt_mode_callback;
trigger = external_interrupt_mode_trigger;
break;
case BTN_ID_LIGHT:
pin = BTN_LIGHT;
callback = external_interrupt_light_callback;
trigger = external_interrupt_light_trigger;
break;
case BTN_ID_ALARM:
pin = BTN_ALARM;
callback = external_interrupt_alarm_callback;
trigger = external_interrupt_alarm_trigger;
break;
default:
return;
}
const bool level = (event & INTERRUPT_TRIGGER_RISING) != 0;
EM_ASM({
const classList = document.querySelector('#btn' + $0).classList;
const highlight = 'highlight';
$1 ? classList.add(highlight) : classList.remove(highlight);
}, button_id, level);
watch_set_pin_level(pin, level);
if (callback && (event & trigger) != 0) {
callback();
void resume_main_loop(void);
resume_main_loop();
}
}
void watch_register_interrupt_callback(const uint8_t pin, ext_irq_cb_t callback, watch_interrupt_trigger trigger) {
if (pin == BTN_MODE) {
external_interrupt_mode_callback = callback;
external_interrupt_mode_trigger = trigger;
} else if (pin == BTN_LIGHT) {
external_interrupt_light_callback = callback;
external_interrupt_light_trigger = trigger;
} else if (pin == BTN_ALARM) {
external_interrupt_alarm_callback = callback;
external_interrupt_alarm_trigger = trigger;
}
}
void watch_register_button_callback(const uint8_t pin, ext_irq_cb_t callback) {
watch_register_interrupt_callback(pin, callback, INTERRUPT_TRIGGER_RISING);
}
void watch_enable_buttons(void) {
watch_enable_external_interrupts();
}
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