| /* |
| * Copyright 2023 Fabian Blatz <fabianblatz@gmail.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define DT_DRV_COMPAT zephyr_lvgl_pointer_input |
| |
| #include "lvgl_common_input.h" |
| #include "lvgl_pointer_input.h" |
| |
| #include <lvgl_display.h> |
| #include <zephyr/logging/log.h> |
| |
| LOG_MODULE_DECLARE(lvgl, CONFIG_LV_Z_LOG_LEVEL); |
| |
| struct lvgl_pointer_input_config { |
| struct lvgl_common_input_config common_config; /* Needs to be first member */ |
| bool swap_xy; |
| bool invert_x; |
| bool invert_y; |
| }; |
| |
| static void lvgl_pointer_process_event(const struct device *dev, struct input_event *evt) |
| { |
| const struct lvgl_pointer_input_config *cfg = dev->config; |
| struct lvgl_common_input_data *data = dev->data; |
| lv_disp_t *disp = lv_disp_get_default(); |
| struct lvgl_disp_data *disp_data = disp->driver->user_data; |
| struct display_capabilities *cap = &disp_data->cap; |
| lv_point_t *point = &data->pending_event.point; |
| |
| switch (evt->code) { |
| case INPUT_ABS_X: |
| point->x = evt->value; |
| break; |
| case INPUT_ABS_Y: |
| point->y = evt->value; |
| break; |
| case INPUT_BTN_TOUCH: |
| data->pending_event.state = evt->value ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL; |
| break; |
| } |
| |
| if (!evt->sync) { |
| return; |
| } |
| |
| /* adjust coordinates */ |
| if (cfg->swap_xy) { |
| lv_coord_t tmp; |
| |
| tmp = point->x; |
| point->x = point->y; |
| point->y = tmp; |
| } |
| |
| if (cfg->invert_x) { |
| if (cap->current_orientation == DISPLAY_ORIENTATION_NORMAL || |
| cap->current_orientation == DISPLAY_ORIENTATION_ROTATED_180) { |
| point->x = cap->x_resolution - point->x; |
| } else { |
| point->x = cap->y_resolution - point->x; |
| } |
| } |
| |
| if (cfg->invert_y) { |
| if (cap->current_orientation == DISPLAY_ORIENTATION_NORMAL || |
| cap->current_orientation == DISPLAY_ORIENTATION_ROTATED_180) { |
| point->y = cap->y_resolution - point->y; |
| } else { |
| point->y = cap->x_resolution - point->y; |
| } |
| } |
| |
| /* rotate touch point to match display rotation */ |
| if (cap->current_orientation == DISPLAY_ORIENTATION_ROTATED_90) { |
| lv_coord_t tmp; |
| |
| tmp = point->x; |
| point->x = point->y; |
| point->y = cap->y_resolution - tmp; |
| } else if (cap->current_orientation == DISPLAY_ORIENTATION_ROTATED_180) { |
| point->x = cap->x_resolution - point->x; |
| point->y = cap->y_resolution - point->y; |
| } else if (cap->current_orientation == DISPLAY_ORIENTATION_ROTATED_270) { |
| lv_coord_t tmp; |
| |
| tmp = point->x; |
| point->x = cap->x_resolution - point->y; |
| point->y = tmp; |
| } |
| |
| /* filter readings within display */ |
| if (point->x <= 0) { |
| point->x = 0; |
| } else if (point->x >= cap->x_resolution) { |
| point->x = cap->x_resolution - 1; |
| } |
| |
| if (point->y <= 0) { |
| point->y = 0; |
| } else if (point->y >= cap->y_resolution) { |
| point->y = cap->y_resolution - 1; |
| } |
| |
| if (k_msgq_put(cfg->common_config.event_msgq, &data->pending_event, K_NO_WAIT) != 0) { |
| LOG_WRN("Could not put input data into queue"); |
| } |
| } |
| |
| int lvgl_pointer_input_init(const struct device *dev) |
| { |
| return lvgl_input_register_driver(LV_INDEV_TYPE_POINTER, dev); |
| } |
| |
| #define LVGL_POINTER_INPUT_DEFINE(inst) \ |
| LVGL_INPUT_DEFINE(inst, pointer, CONFIG_LV_Z_POINTER_INPUT_MSGQ_COUNT, \ |
| lvgl_pointer_process_event); \ |
| static const struct lvgl_pointer_input_config lvgl_pointer_input_config_##inst = { \ |
| .common_config.event_msgq = &LVGL_INPUT_EVENT_MSGQ(inst, pointer), \ |
| .swap_xy = DT_INST_PROP(inst, swap_xy), \ |
| .invert_x = DT_INST_PROP(inst, invert_x), \ |
| .invert_y = DT_INST_PROP(inst, invert_y), \ |
| }; \ |
| static struct lvgl_common_input_data lvgl_common_input_data_##inst; \ |
| DEVICE_DT_INST_DEFINE(inst, NULL, NULL, &lvgl_common_input_data_##inst, \ |
| &lvgl_pointer_input_config_##inst, POST_KERNEL, \ |
| CONFIG_INPUT_INIT_PRIORITY, NULL); |
| |
| DT_INST_FOREACH_STATUS_OKAY(LVGL_POINTER_INPUT_DEFINE) |