/**
* 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;
}
/**
* Create a roller object
* @param par pointer to an object, it will be the parent of the new roller
* @param copy pointer to a roller object, if not NULL then the new object will be copied from it
* @return pointer to the created roller
*/
lv_obj_t * lv_roller_create(lv_obj_t * par, lv_obj_t * copy)
{
/*Create the ancestor of roller*/
lv_obj_t * new_roller = lv_ddlist_create(par, copy);
lv_mem_assert(new_roller);
if(ancestor_scrl_signal == NULL) ancestor_scrl_signal = lv_obj_get_signal_func(lv_page_get_scrl(new_roller));
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_roller);
/*Allocate the roller type specific extended data*/
lv_roller_ext_t * ext = lv_obj_allocate_ext_attr(new_roller, sizeof(lv_roller_ext_t));
lv_mem_assert(ext);
/*The signal and design functions are not copied so set them here*/
lv_obj_set_signal_func(new_roller, lv_roller_signal);
lv_obj_set_design_func(new_roller, lv_roller_design);
/*Init the new roller roller*/
if(copy == NULL) {
lv_obj_t * scrl = lv_page_get_scrl(new_roller);
lv_obj_set_drag(scrl, true); /*In ddlist is might be disabled*/
lv_page_set_rel_action(new_roller, NULL); /*Roller don't uses it (like ddlist)*/
lv_page_set_scrl_fit(new_roller, true, false); /*Height is specified directly*/
lv_ddlist_open(new_roller, false);
lv_ddlist_set_anim_time(new_roller, LV_ROLLER_ANIM_TIME);
lv_roller_set_visible_row_count(new_roller, 3);
lv_label_set_align(ext->ddlist.label, LV_LABEL_ALIGN_CENTER);
lv_obj_set_signal_func(scrl, lv_roller_scrl_signal);
/*Set the default styles*/
lv_theme_t *th = lv_theme_get_current();
if(th) {
lv_roller_set_style(new_roller, LV_ROLLER_STYLE_BG, th->roller.bg);
lv_roller_set_style(new_roller, LV_ROLLER_STYLE_SEL, th->roller.sel);
} else {
/*Let the ddlist's style*/
lv_obj_refresh_style(new_roller); /*To set scrollable size automatically*/
}
}
/*Copy an existing roller*/
else {
lv_obj_t * scrl = lv_page_get_scrl(new_roller);
lv_ddlist_open(new_roller, false);
lv_obj_set_signal_func(scrl, lv_roller_scrl_signal);
lv_obj_refresh_style(new_roller); /*Refresh the style with new signal function*/
}
return new_roller;
}
static void ssd1306_task(void *pvParameters)
{
printf("%s: Started user interface task\n", __FUNCTION__);
vTaskDelay(SECOND);
ssd1306_set_whole_display_lighting(&dev, false);
//Set a style for the obj
lv_style_copy(&style, &lv_style_transp);
style.text.font = &lv_font_dejavu_10; /*Unicode and symbol fonts already assigned by the library*/
style.text.color.full = 1;
style.text.opa = 255;
style.body.main_color.full = 0;
style.body.grad_color.full = 0;
style.body.shadow.color.full = 0;
style.body.border.color.full = 0;
style.body.empty = 1;
style.image.color.full = 1;
style.image.intense = 255;
style.image.opa = 255;
style.line.color.full = 1;
style.line.opa = 255;
style.line.width = 1;
style.line.rounded = false;
//Create main screen obj
lv_obj_t * scr = lv_obj_create(NULL, NULL);
lv_scr_load(scr);
lv_obj_set_style(scr, &style);
//Create a simple label
label = lv_label_create(lv_scr_act(), NULL);
lv_obj_set_style(label, &style);
lv_obj_align(label, lv_scr_act(), LV_ALIGN_IN_TOP_LEFT, 0, 0);
lv_label_set_long_mode(label, LV_LABEL_LONG_BREAK);
lv_label_set_align(label, LV_LABEL_ALIGN_CENTER);
lv_label_set_text(label, "lvgl work with esp-open-rtos");
lv_obj_set_width(label, LV_HOR_RES);
while (1) {
/*draw system call */
lv_task_handler();
vTaskDelay(1);
}
}
