620 lines
19 KiB
C
620 lines
19 KiB
C
/**
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* Copyright 2021 Johannes Marbach
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "backends.h"
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#include "command_line.h"
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#include "config.h"
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#include "indev.h"
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#include "log.h"
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#include "unl0kr.h"
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#include "terminal.h"
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#include "theme.h"
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#include "themes.h"
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#include "lv_drv_conf.h"
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#if USE_FBDEV
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#include "lv_drivers/display/fbdev.h"
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#endif /* USE_FBDEV */
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#if USE_DRM
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#include "lv_drivers/display/drm.h"
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#endif /* USE_DRM */
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#include "lvgl/lvgl.h"
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#include "../squeek2lvgl/sq2lv.h"
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/reboot.h>
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#include <sys/time.h>
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/**
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* Static variables
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*/
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ul_cli_opts cli_opts;
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ul_config_opts conf_opts;
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bool is_alternate_theme = false;
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bool is_password_obscured = true;
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bool is_keyboard_hidden = false;
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lv_obj_t *keyboard = NULL;
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/**
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* Static prototypes
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*/
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/**
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* Query the device monitor and handle updates.
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*
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* @param timer the timer object
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*/
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static void query_device_monitor(lv_timer_t *timer);
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/**
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* Handle LV_EVENT_CLICKED events from the theme toggle button.
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*
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* @param event the event object
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*/
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static void toggle_theme_btn_clicked_cb(lv_event_t *event);
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/**
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* Toggle between the light and dark theme.
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*/
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static void toggle_theme(void);
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/**
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* Set the UI theme.
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*
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* @param is_alternate true if the alternate theme should be applied, false if the default theme should be applied
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*/
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static void set_theme(bool is_alternate);
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/**
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* Get the UI theme.
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*
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* @param is_alternate true if the alternate theme should be selected, false if the default theme should be selected
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*/
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static const ul_theme * get_theme(bool is_alternate);
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/**
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* Handle LV_EVENT_CLICKED events from the show/hide password toggle button.
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*
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* @param event the event object
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*/
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static void toggle_pw_btn_clicked_cb(lv_event_t *event);
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/**
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* Toggle between showing and hiding the password.
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*/
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static void toggle_password_obscured(void);
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/**
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* Show / hide the password.
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*
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* @param is_hidden true if the password should be hidden, false if it should be shown
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*/
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static void set_password_obscured(bool is_obscured);
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/**
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* Handle LV_EVENT_CLICKED events from the show/hide keyboard toggle button.
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*
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* @param event the event object
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*/
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static void toggle_kb_btn_clicked_cb(lv_event_t *event);
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/**
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* Toggle between showing and hiding the keyboard.
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*/
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static void toggle_keyboard_hidden(void);
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/**
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* Show / hide the keyboard
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*
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* @param is_hidden true if the keyboard should be hidden, false if it should be shown
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*/
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static void set_keyboard_hidden(bool is_hidden);
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/**
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* Callback for the keyboard's vertical slide in / out animation.
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*
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* @param obj keyboard widget
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* @param value y position
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*/
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static void keyboard_anim_y_cb(void *obj, int32_t value);
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/**
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* Handle LV_EVENT_VALUE_CHANGED events from the keyboard layout dropdown.
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*
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* @param event the event object
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*/
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static void layout_dropdown_value_changed_cb(lv_event_t *event);
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/**
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* Handle LV_EVENT_CLICKED events from the shutdown button.
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*
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* @param event the event object
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*/
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static void shutdown_btn_clicked_cb(lv_event_t *event);
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/**
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* Handle LV_EVENT_VALUE_CHANGED events from the shutdown message box.
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*
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* @param event the event object
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*/
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static void shutdown_mbox_value_changed_cb(lv_event_t *event);
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/**
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* Handle LV_EVENT_VALUE_CHANGED events from the keyboard widget.
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*
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* @param event the event object
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*/
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static void keyboard_value_changed_cb(lv_event_t *event);
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/**
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* Handle LV_EVENT_READY events from the keyboard widget.
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*
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* @param event the event object
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*/
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static void keyboard_ready_cb(lv_event_t *event);
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/**
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* Handle LV_EVENT_READY events from the textarea widget.
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*
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* @param event the event object
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*/
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static void textarea_ready_cb(lv_event_t *event);
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/**
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* Print out the entered password and exit.
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*
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* @param textarea the textarea widget
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*/
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static void print_password_and_exit(lv_obj_t *textarea);
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/**
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* Shuts down the device.
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*/
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static void shutdown(void);
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/**
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* Handle termination signals sent to the process.
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*
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* @param signum the signal's number
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*/
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static void sigaction_handler(int signum);
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/**
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* Static functions
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*/
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static void query_device_monitor(lv_timer_t *timer) {
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LV_UNUSED(timer);
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ul_indev_query_monitor();
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}
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static void toggle_theme_btn_clicked_cb(lv_event_t *event) {
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LV_UNUSED(event);
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toggle_theme();
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}
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static void toggle_theme(void) {
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is_alternate_theme = !is_alternate_theme;
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set_theme(is_alternate_theme);
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}
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static void set_theme(bool is_alternate) {
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ul_theme_apply(get_theme(is_alternate));
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}
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static const ul_theme * get_theme(bool is_alternate) {
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return ul_themes_themes[is_alternate ? conf_opts.theme.alternate_id : conf_opts.theme.default_id];
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}
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static void toggle_pw_btn_clicked_cb(lv_event_t *event) {
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LV_UNUSED(event);
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toggle_password_obscured();
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}
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static void toggle_password_obscured(void) {
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is_password_obscured = !is_password_obscured;
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set_password_obscured(is_password_obscured);
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}
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static void set_password_obscured(bool is_obscured) {
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lv_obj_t *textarea = lv_keyboard_get_textarea(keyboard);
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lv_textarea_set_password_mode(textarea, is_obscured);
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}
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static void toggle_kb_btn_clicked_cb(lv_event_t *event) {
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LV_UNUSED(event);
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toggle_keyboard_hidden();
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}
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static void toggle_keyboard_hidden(void) {
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is_keyboard_hidden = !is_keyboard_hidden;
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set_keyboard_hidden(is_keyboard_hidden);
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}
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static void set_keyboard_hidden(bool is_hidden) {
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if (!conf_opts.general.animations) {
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lv_obj_set_y(keyboard, is_hidden ? lv_obj_get_height(keyboard) : 0);
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return;
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}
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lv_anim_t keyboard_anim;
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lv_anim_init(&keyboard_anim);
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lv_anim_set_var(&keyboard_anim, keyboard);
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lv_anim_set_values(&keyboard_anim, is_hidden ? 0 : lv_obj_get_height(keyboard), is_hidden ? lv_obj_get_height(keyboard) : 0);
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lv_anim_set_path_cb(&keyboard_anim, lv_anim_path_ease_out);
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lv_anim_set_time(&keyboard_anim, 500);
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lv_anim_set_exec_cb(&keyboard_anim, keyboard_anim_y_cb);
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lv_anim_start(&keyboard_anim);
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}
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static void keyboard_anim_y_cb(void *obj, int32_t value) {
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lv_obj_set_y(obj, value);
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}
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static void layout_dropdown_value_changed_cb(lv_event_t *event) {
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lv_obj_t *dropdown = lv_event_get_target(event);
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uint16_t idx = lv_dropdown_get_selected(dropdown);
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sq2lv_switch_layout(keyboard, idx);
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}
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static void shutdown_btn_clicked_cb(lv_event_t *event) {
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LV_UNUSED(event);
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static const char *btns[] = { "Yes", "No", "" };
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lv_obj_t *mbox = lv_msgbox_create(NULL, NULL, "Shutdown device?", btns, false);
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lv_obj_set_size(mbox, 400, LV_SIZE_CONTENT);
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lv_obj_add_event_cb(mbox, shutdown_mbox_value_changed_cb, LV_EVENT_VALUE_CHANGED, NULL);
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lv_obj_center(mbox);
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}
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static void shutdown_mbox_value_changed_cb(lv_event_t *event) {
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lv_obj_t *mbox = lv_event_get_current_target(event);
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if (lv_msgbox_get_active_btn(mbox) == 0) {
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shutdown();
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}
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lv_msgbox_close(mbox);
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}
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static void keyboard_value_changed_cb(lv_event_t *event) {
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lv_obj_t *kb = lv_event_get_target(event);
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uint16_t btn_id = lv_btnmatrix_get_selected_btn(kb);
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if (btn_id == LV_BTNMATRIX_BTN_NONE) {
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return;
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}
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if (sq2lv_is_layer_switcher(kb, btn_id)) {
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sq2lv_switch_layer(kb, btn_id);
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return;
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}
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lv_keyboard_def_event_cb(event);
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}
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static void keyboard_ready_cb(lv_event_t *event) {
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print_password_and_exit(lv_keyboard_get_textarea(lv_event_get_target(event)));
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}
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static void textarea_ready_cb(lv_event_t *event) {
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print_password_and_exit(lv_event_get_target(event));
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}
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static void print_password_and_exit(lv_obj_t *textarea) {
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/* Print the password to STDOUT */
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printf("%s\n", lv_textarea_get_text(textarea));
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/* Clear the screen so that when the password field was unobscured, it cannot
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* leak via stale display buffers after we've exited */
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lv_obj_t *rect = lv_obj_create(lv_scr_act());
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lv_obj_set_size(rect, LV_PCT(100), LV_PCT(100));
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lv_obj_set_pos(rect, 0, 0);
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lv_obj_set_style_bg_opa(rect, LV_OPA_COVER, LV_PART_MAIN);
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lv_obj_set_style_bg_color(rect , lv_color_hex(get_theme(is_alternate_theme)->window.bg_color), LV_PART_MAIN);
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lv_refr_now(lv_disp_get_default()); /* Force the screen to be drawn */
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/* Trigger SIGTERM to exit */
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sigaction_handler(SIGTERM);
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}
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static void shutdown(void) {
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sync();
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reboot(RB_POWER_OFF);
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}
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static void sigaction_handler(int signum) {
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LV_UNUSED(signum);
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ul_terminal_reset_current_terminal();
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exit(0);
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}
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/**
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* Main
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*/
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int main(int argc, char *argv[]) {
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/* Parse command line options */
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ul_cli_parse_opts(argc, argv, &cli_opts);
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/* Set up log level */
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if (cli_opts.verbose) {
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ul_log_set_level(UL_LOG_LEVEL_VERBOSE);
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}
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/* Announce ourselves */
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ul_log(UL_LOG_LEVEL_VERBOSE, "unl0kr %s", UL_VERSION);
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/* Parse config files */
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ul_config_init_opts(&conf_opts);
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ul_config_parse_file("/etc/unl0kr.conf", &conf_opts);
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ul_config_parse_directory("/etc/unl0kr.conf.d", &conf_opts);
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ul_config_parse_files(cli_opts.config_files, cli_opts.num_config_files, &conf_opts);
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/* Prepare current TTY and clean up on termination */
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ul_terminal_prepare_current_terminal(!conf_opts.quirks.terminal_prevent_graphics_mode, !conf_opts.quirks.terminal_allow_keyboard_input);
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struct sigaction action;
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memset(&action, 0, sizeof(action));
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action.sa_handler = sigaction_handler;
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sigaction(SIGINT, &action, NULL);
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sigaction(SIGTERM, &action, NULL);
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/* Initialise LVGL and set up logging callback */
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lv_init();
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lv_log_register_print_cb(ul_log_print_cb);
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/* Initialise display driver */
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static lv_disp_drv_t disp_drv;
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lv_disp_drv_init(&disp_drv);
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/* Initialise framebuffer driver and query display size */
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uint32_t hor_res = 0;
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uint32_t ver_res = 0;
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uint32_t dpi = 0;
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switch (conf_opts.general.backend) {
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#if USE_FBDEV
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case UL_BACKENDS_BACKEND_FBDEV:
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fbdev_init();
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if (conf_opts.quirks.fbdev_force_refresh) {
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fbdev_force_refresh(true);
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}
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fbdev_get_sizes(&hor_res, &ver_res, &dpi);
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disp_drv.flush_cb = fbdev_flush;
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break;
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#endif /* USE_FBDEV */
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#if USE_DRM
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case UL_BACKENDS_BACKEND_DRM:
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drm_init();
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drm_get_sizes((lv_coord_t *)&hor_res, (lv_coord_t *)&ver_res, &dpi);
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disp_drv.flush_cb = drm_flush;
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break;
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#endif /* USE_DRM */
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default:
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ul_log(UL_LOG_LEVEL_ERROR, "Unable to find suitable backend");
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exit(EXIT_FAILURE);
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}
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/* Override display parameters with command line options if necessary */
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if (cli_opts.hor_res > 0) {
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hor_res = cli_opts.hor_res;
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}
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if (cli_opts.ver_res > 0) {
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ver_res = cli_opts.ver_res;
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}
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if (cli_opts.dpi > 0) {
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dpi = cli_opts.dpi;
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}
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/* Prepare display buffer */
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const size_t buf_size = hor_res * ver_res; /* Direct rendering requires using the screen size for the buffer */
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lv_disp_draw_buf_t disp_buf;
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lv_color_t *buf = (lv_color_t *)malloc(buf_size * sizeof(lv_color_t));
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lv_disp_draw_buf_init(&disp_buf, buf, NULL, buf_size);
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/* Register display driver */
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disp_drv.draw_buf = &disp_buf;
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disp_drv.hor_res = hor_res;
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disp_drv.ver_res = ver_res;
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disp_drv.offset_x = cli_opts.x_offset;
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disp_drv.offset_y = cli_opts.y_offset;
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disp_drv.dpi = dpi;
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disp_drv.direct_mode = true;
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lv_disp_drv_register(&disp_drv);
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/* Prepare for routing physical keyboard input into the textarea */
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lv_group_t *keyboard_input_group = lv_group_create();
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ul_indev_set_keyboard_input_group(keyboard_input_group);
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/* Start input device monitor and auto-connect available devices */
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ul_indev_set_allowed_device_capability(conf_opts.input.keyboard, conf_opts.input.pointer, conf_opts.input.touchscreen);
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ul_indev_start_monitor();
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lv_timer_create(query_device_monitor, 1000, NULL);
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ul_indev_auto_connect();
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/* Hide the on-screen keyboard by default if a physical keyboard is connected */
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if (conf_opts.keyboard.autohide && ul_indev_is_keyboard_connected()) {
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is_keyboard_hidden = true;
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}
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/* Initialise theme */
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set_theme(is_alternate_theme);
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/* Prevent scrolling when keyboard is off-screen */
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lv_obj_clear_flag(lv_scr_act(), LV_OBJ_FLAG_SCROLLABLE);
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/* Figure out a few numbers for sizing and positioning */
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const int base_keyboard_height = ver_res > hor_res ? ver_res / 3 : ver_res / 2; /* Height for 4 rows */
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const int keyboard_height = base_keyboard_height * 1.25; /* Add space for an extra top row */
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const int padding = keyboard_height / 10;
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const int textarea_container_max_width = LV_MIN(hor_res, ver_res);
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/* Main flexbox */
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lv_obj_t *container = lv_obj_create(lv_scr_act());
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lv_obj_set_flex_flow(container, LV_FLEX_FLOW_COLUMN);
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lv_obj_set_flex_align(container, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
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lv_obj_set_size(container, LV_PCT(100), ver_res - keyboard_height);
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lv_obj_set_pos(container, 0, 0);
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lv_obj_clear_flag(container, LV_OBJ_FLAG_SCROLLABLE);
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/* Header flexbox */
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lv_obj_t *header = lv_obj_create(container);
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lv_obj_add_flag(header, UL_WIDGET_HEADER);
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lv_theme_apply(header); /* Force re-apply theme after setting flag so that the widget can be identified */
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lv_obj_set_flex_flow(header, LV_FLEX_FLOW_ROW);
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lv_obj_set_flex_align(header, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
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lv_obj_set_size(header, LV_PCT(100), LV_SIZE_CONTENT);
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/* Theme switcher button */
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lv_obj_t *toggle_theme_btn = lv_btn_create(header);
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lv_obj_add_event_cb(toggle_theme_btn, toggle_theme_btn_clicked_cb, LV_EVENT_CLICKED, NULL);
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lv_obj_t *toggle_theme_btn_label = lv_label_create(toggle_theme_btn);
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lv_label_set_text(toggle_theme_btn_label, UL_SYMBOL_ADJUST);
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lv_obj_center(toggle_theme_btn_label);
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/* Show / hide keyboard button */
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lv_obj_t *toggle_kb_btn = lv_btn_create(header);
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lv_obj_add_event_cb(toggle_kb_btn, toggle_kb_btn_clicked_cb, LV_EVENT_CLICKED, NULL);
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lv_obj_t *toggle_kb_btn_label = lv_label_create(toggle_kb_btn);
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|
lv_label_set_text(toggle_kb_btn_label, LV_SYMBOL_KEYBOARD);
|
|
lv_obj_center(toggle_kb_btn_label);
|
|
|
|
/* Keyboard layout dropdown */
|
|
lv_obj_t *layout_dropdown = lv_dropdown_create(header);
|
|
lv_dropdown_set_options(layout_dropdown, sq2lv_layout_short_names);
|
|
lv_obj_add_event_cb(layout_dropdown, layout_dropdown_value_changed_cb, LV_EVENT_VALUE_CHANGED, NULL);
|
|
lv_obj_set_width(layout_dropdown, 90);
|
|
|
|
/* Spacer */
|
|
lv_obj_t *spacer = lv_obj_create(header);
|
|
lv_obj_set_height(spacer, 0);
|
|
lv_obj_set_flex_grow(spacer, 1);
|
|
|
|
/* Shutdown button */
|
|
lv_obj_t *shutdown_btn = lv_btn_create(header);
|
|
lv_obj_add_event_cb(shutdown_btn, shutdown_btn_clicked_cb, LV_EVENT_CLICKED, NULL);
|
|
lv_obj_t *shutdown_btn_label = lv_label_create(shutdown_btn);
|
|
lv_label_set_text(shutdown_btn_label, LV_SYMBOL_POWER);
|
|
lv_obj_center(shutdown_btn_label);
|
|
|
|
/* Flexible spacer */
|
|
lv_obj_t *flexible_spacer = lv_obj_create(container);
|
|
lv_obj_set_size(flexible_spacer, LV_PCT(100), 0);
|
|
lv_obj_set_flex_grow(flexible_spacer, 1);
|
|
|
|
/* Textarea flexbox */
|
|
lv_obj_t *textarea_container = lv_obj_create(container);
|
|
lv_obj_set_size(textarea_container, LV_PCT(100), LV_SIZE_CONTENT);
|
|
lv_obj_set_style_max_width(textarea_container, textarea_container_max_width, LV_PART_MAIN);
|
|
lv_obj_set_flex_flow(textarea_container, LV_FLEX_FLOW_ROW);
|
|
lv_obj_set_flex_align(textarea_container, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
|
|
lv_obj_set_style_pad_left(textarea_container, padding, LV_PART_MAIN);
|
|
lv_obj_set_style_pad_right(textarea_container, padding, LV_PART_MAIN);
|
|
|
|
/* Textarea */
|
|
lv_obj_t *textarea = lv_textarea_create(textarea_container);
|
|
lv_textarea_set_one_line(textarea, true);
|
|
lv_textarea_set_password_mode(textarea, true);
|
|
lv_textarea_set_password_bullet(textarea, conf_opts.textarea.bullet);
|
|
lv_textarea_set_placeholder_text(textarea, "Enter password...");
|
|
lv_obj_add_event_cb(textarea, textarea_ready_cb, LV_EVENT_READY, NULL);
|
|
lv_obj_set_flex_grow(textarea, 1);
|
|
lv_obj_add_state(textarea, LV_STATE_FOCUSED);
|
|
|
|
/* Route physical keyboard input into textarea */
|
|
lv_group_add_obj(keyboard_input_group, textarea);
|
|
|
|
/* Reveal / obscure password button */
|
|
lv_obj_t *toggle_pw_btn = lv_btn_create(textarea_container);
|
|
const int textarea_height = lv_obj_get_height(textarea);
|
|
lv_obj_set_size(toggle_pw_btn, textarea_height, textarea_height);
|
|
lv_obj_t *toggle_pw_btn_label = lv_label_create(toggle_pw_btn);
|
|
lv_obj_center(toggle_pw_btn_label);
|
|
lv_label_set_text(toggle_pw_btn_label, LV_SYMBOL_EYE_OPEN);
|
|
lv_obj_add_event_cb(toggle_pw_btn, toggle_pw_btn_clicked_cb, LV_EVENT_CLICKED, NULL);
|
|
|
|
/* Set header button size to match dropdown (for some reason the height is only available here) */
|
|
const int dropwdown_height = lv_obj_get_height(layout_dropdown);
|
|
lv_obj_set_size(toggle_theme_btn, dropwdown_height, dropwdown_height);
|
|
lv_obj_set_size(toggle_kb_btn, dropwdown_height, dropwdown_height);
|
|
lv_obj_set_size(shutdown_btn, dropwdown_height, dropwdown_height);
|
|
|
|
/* Fixed spacer */
|
|
lv_obj_t *fixed_spacer = lv_obj_create(container);
|
|
lv_obj_set_size(fixed_spacer, LV_PCT(100), padding);
|
|
|
|
/* Keyboard (after textarea / label so that key popovers are not drawn over) */
|
|
keyboard = lv_keyboard_create(lv_scr_act());
|
|
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_TEXT_LOWER);
|
|
lv_keyboard_set_textarea(keyboard, textarea);
|
|
lv_obj_remove_event_cb(keyboard, lv_keyboard_def_event_cb);
|
|
lv_obj_add_event_cb(keyboard, keyboard_value_changed_cb, LV_EVENT_VALUE_CHANGED, NULL);
|
|
lv_obj_add_event_cb(keyboard, keyboard_ready_cb, LV_EVENT_READY, NULL);
|
|
lv_obj_set_pos(keyboard, 0, is_keyboard_hidden ? keyboard_height : 0);
|
|
lv_obj_set_size(keyboard, hor_res, keyboard_height);
|
|
ul_theme_prepare_keyboard(keyboard);
|
|
|
|
/* Apply textarea options */
|
|
set_password_obscured(conf_opts.textarea.obscured);
|
|
|
|
/* Apply keyboard options */
|
|
sq2lv_switch_layout(keyboard, conf_opts.keyboard.layout_id);
|
|
lv_dropdown_set_selected(layout_dropdown, conf_opts.keyboard.layout_id);
|
|
if (conf_opts.keyboard.popovers) {
|
|
lv_keyboard_set_popovers(keyboard, true);
|
|
}
|
|
|
|
/* Run lvgl in "tickless" mode */
|
|
uint32_t timeout = conf_opts.general.timeout * 1000; /* ms */
|
|
while(1) {
|
|
if (!timeout || lv_disp_get_inactive_time(NULL) < timeout) {
|
|
lv_task_handler();
|
|
} else if (timeout) {
|
|
shutdown();
|
|
}
|
|
usleep(5000);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Tick generation
|
|
*/
|
|
|
|
/**
|
|
* Generate tick for LVGL.
|
|
*
|
|
* @return tick in ms
|
|
*/
|
|
uint32_t ul_get_tick(void) {
|
|
static uint64_t start_ms = 0;
|
|
if (start_ms == 0) {
|
|
struct timeval tv_start;
|
|
gettimeofday(&tv_start, NULL);
|
|
start_ms = (tv_start.tv_sec * 1000000 + tv_start.tv_usec) / 1000;
|
|
}
|
|
|
|
struct timeval tv_now;
|
|
gettimeofday(&tv_now, NULL);
|
|
uint64_t now_ms;
|
|
now_ms = (tv_now.tv_sec * 1000000 + tv_now.tv_usec) / 1000;
|
|
|
|
uint32_t time_ms = now_ms - start_ms;
|
|
return time_ms;
|
|
}
|