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40 lines
1017 B
40 lines
1017 B
2 years ago
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/*
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* Copyright 2023 jacqueline <me@jacqueline.id.au>
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*
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* SPDX-License-Identifier: GPL-3.0-only
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*/
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#include "wheel_encoder.hpp"
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#include "hal/lv_hal_indev.h"
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namespace ui {
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void encoder_read(lv_indev_drv_t * drv, lv_indev_data_t*data){
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TouchWheelEncoder *instance = reinterpret_cast<TouchWheelEncoder*>(drv->user_data);
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instance->Read(data);
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}
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TouchWheelEncoder::TouchWheelEncoder(std::weak_ptr<drivers::RelativeWheel> wheel) : wheel_(wheel) {
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lv_indev_drv_init(&driver_);
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driver_.type = LV_INDEV_TYPE_ENCODER;
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driver_.read_cb = encoder_read;
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driver_.user_data = this;
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registration_ = lv_indev_drv_register(&driver_);
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}
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auto TouchWheelEncoder::Read(lv_indev_data_t *data) -> void {
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auto lock = wheel_.lock();
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if (lock == nullptr) {
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data->state = LV_INDEV_STATE_RELEASED;
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data->enc_diff = 0;
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return;
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}
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lock->Update();
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data->state = lock->is_pressed() ? LV_INDEV_STATE_PRESSED : LV_INDEV_STATE_RELEASED;
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data->enc_diff = lock->ticks();
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}
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} // namespace ui
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