/**
* Open a terminal
* @return pointer to the terminal window
*/
lv_obj_t * terminal_create(void)
{
static lv_style_t style_bg;
lv_style_copy(&style_bg, &lv_style_pretty);
style_bg.body.main_color = LV_COLOR_MAKE(0x30, 0x30, 0x30);
style_bg.body.grad_color = LV_COLOR_MAKE(0x30, 0x30, 0x30);
style_bg.body.border.color = LV_COLOR_WHITE;
style_bg.text.color = LV_COLOR_MAKE(0xE0, 0xE0, 0xE0);
win = lv_win_create(lv_scr_act(), NULL);
lv_win_set_style(win, LV_WIN_STYLE_BG, &style_bg);
lv_obj_set_size(win, TERMINAL_WIDTH, TERMINAL_HEIGHT);
lv_win_set_sb_mode(win, LV_SB_MODE_AUTO);
lv_win_add_btn(win, SYMBOL_CLOSE, win_close_action);
/*Make the window's content responsive*/
lv_win_set_layout(win, LV_LAYOUT_PRETTY);
/*Create a label for the text of the terminal*/
label = lv_label_create(win, NULL);
lv_label_set_long_mode(label, LV_LABEL_LONG_BREAK);
lv_obj_set_width(label, lv_win_get_width(win));
lv_label_set_static_text(label, txt_log); /*Use the text array directly*/
/*Create a clear button*/
clr_btn = lv_btn_create(win, NULL);
lv_cont_set_fit(clr_btn, true, true);
lv_btn_set_action(clr_btn, LV_BTN_ACTION_CLICK, clr_click_action);
lv_obj_t * btn_label = lv_label_create(clr_btn, NULL);
lv_label_set_text(btn_label, "Clear");
return win;
}
/**
* Called when the Clear button is click to clear the text of the terminal
* @param btn pointer to the clear button
* @return LV_ACTION_RES_OK because the button is not deleted
*/
static lv_res_t clr_click_action(lv_obj_t * btn)
{
txt_log[0] = '\0';
lv_label_set_static_text(label, txt_log); /*Refresh the text*/
return LV_RES_OK;
}
/**
* Create a label objects
* @param par pointer to an object, it will be the parent of the new label
* @param copy pointer to a button object, if not NULL then the new object will be copied from it
* @return pointer to the created button
*/
lv_obj_t * lv_label_create(lv_obj_t * par, lv_obj_t * copy)
{
/*Create a basic object*/
lv_obj_t * new_label = lv_obj_create(par, copy);
lv_mem_assert(new_label);
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_label);
/*Extend the basic object to a label object*/
lv_obj_allocate_ext_attr(new_label, sizeof(lv_label_ext_t));
lv_label_ext_t * ext = lv_obj_get_ext_attr(new_label);
lv_mem_assert(ext);
ext->text = NULL;
ext->static_txt = 0;
ext->recolor = 0;
ext->no_break = 0;
ext->body_draw = 0;
ext->align = LV_LABEL_ALIGN_LEFT;
ext->dot_end = LV_LABEL_DOT_END_INV;
ext->long_mode = LV_LABEL_LONG_EXPAND;
ext->anim_speed = LV_LABEL_SCROLL_SPEED;
ext->offset.x = 0;
ext->offset.y = 0;
lv_obj_set_design_func(new_label, lv_label_design);
lv_obj_set_signal_func(new_label, lv_label_signal);
/*Init the new label*/
if(copy == NULL) {
lv_obj_set_click(new_label, false);
lv_label_set_long_mode(new_label, LV_LABEL_LONG_EXPAND);
lv_label_set_text(new_label, "Text");
lv_label_set_style(new_label, NULL); /*Inherit parent's style*/
}
/*Copy 'copy' if not NULL*/
else {
lv_label_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
lv_label_set_long_mode(new_label, lv_label_get_long_mode(copy));
lv_label_set_recolor(new_label, lv_label_get_recolor(copy));
lv_label_set_body_draw(new_label, lv_label_get_body_draw(copy));
lv_label_set_align(new_label, lv_label_get_align(copy));
if(copy_ext->static_txt == 0) lv_label_set_text(new_label, lv_label_get_text(copy));
else lv_label_set_static_text(new_label, lv_label_get_text(copy));
/*In DOT mode save the text byte-to-byte because a '\0' can be in the middle*/
if(copy_ext->long_mode == LV_LABEL_LONG_DOT) {
ext->text = lv_mem_realloc(ext->text, lv_mem_get_size(copy_ext->text));
memcpy(ext->text, copy_ext->text, lv_mem_get_size(copy_ext->text));
}
memcpy(ext->dot_tmp, copy_ext->dot_tmp, sizeof(ext->dot_tmp));
ext->dot_end = copy_ext->dot_end;
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_label);
}
return new_label;
}
/**
* Add data to the terminal
* @param txt_in character sting to add to the terminal
*/
void terminal_add(const char * txt_in)
{
if(win == NULL) return; /*Check if the window is exists*/
uint16_t txt_len = strlen(txt_in);
uint16_t old_len = strlen(txt_log);
/*If the data is longer then the terminal ax size show the last part of data*/
if(txt_len > TERMINAL_LOG_LENGTH) {
txt_in += (txt_len - TERMINAL_LOG_LENGTH);
txt_len = TERMINAL_LOG_LENGTH;
old_len = 0;
}
/*If the text become too long 'forget' the oldest lines*/
else if(old_len + txt_len > TERMINAL_LOG_LENGTH) {
uint16_t new_start;
for(new_start = 0; new_start < old_len; new_start++) {
if(txt_log[new_start] == '\n') {
/*If there is enough space break*/
if(new_start >= txt_len) {
/*Ignore line breaks*/
while(txt_log[new_start] == '\n' || txt_log[new_start] == '\r') new_start++;
break;
}
}
}
/* If it wasn't able to make enough space on line breaks
* simply forget the oldest characters*/
if(new_start == old_len) {
new_start = old_len - (TERMINAL_LOG_LENGTH - txt_len);
}
/*Move the remaining text to the beginning*/
uint16_t j;
for(j = new_start; j < old_len; j++) {
txt_log[j - new_start] = txt_log[j];
}
old_len = old_len - new_start;
txt_log[old_len] = '\0';
}
memcpy(&txt_log[old_len], txt_in, txt_len);
txt_log[old_len + txt_len] = '\0';
lv_label_set_static_text(label, txt_log);
lv_win_focus(win, clr_btn, TERMINAL_ANIM_TIME);
}
