mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-14 06:42:58 +08:00
610 lines
20 KiB
C
610 lines
20 KiB
C
/**
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* @file lv_list.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_conf.h"
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#if USE_LV_LIST != 0
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#include "lv_list.h"
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#include "../lv_obj/lv_group.h"
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#include "../lv_themes/lv_theme.h"
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#include "misc/gfx/anim.h"
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#include "misc/math/math_base.h"
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/*********************
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* DEFINES
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*********************/
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#define LV_LIST_LAYOUT_DEF LV_LAYOUT_COL_M
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#ifndef LV_LIST_FOCUS_TIME
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#define LV_LIST_FOCUS_TIME 100 /*Animation time of focusing to the a list element [ms] (0: no animation) */
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#endif
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static lv_res_t lv_list_signal(lv_obj_t *list, lv_signal_t sign, void *param);
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static lv_obj_t * get_next_btn(lv_obj_t *list, lv_obj_t *prev_btn);
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static void refr_btn_width(lv_obj_t *list);
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/**********************
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* STATIC VARIABLES
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**********************/
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static lv_signal_func_t btn_signal;
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static lv_signal_func_t img_signal;
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static lv_signal_func_t label_signal;
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static lv_signal_func_t ancestor_signal;
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Create a list objects
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* @param par pointer to an object, it will be the parent of the new list
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* @param copy pointer to a list object, if not NULL then the new object will be copied from it
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* @return pointer to the created list
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*/
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lv_obj_t * lv_list_create(lv_obj_t * par, lv_obj_t * copy)
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{
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/*Create the ancestor basic object*/
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lv_obj_t * new_list = lv_page_create(par, copy);
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dm_assert(new_list);
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if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_list);
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lv_list_ext_t * ext = lv_obj_allocate_ext_attr(new_list, sizeof(lv_list_ext_t));
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dm_assert(ext);
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ext->style_img = NULL;
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ext->styles_btn[LV_BTN_STATE_REL] = &lv_style_btn_rel;
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ext->styles_btn[LV_BTN_STATE_PR] = &lv_style_btn_pr;
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ext->styles_btn[LV_BTN_STATE_TGL_REL] = &lv_style_btn_tgl_rel;
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ext->styles_btn[LV_BTN_STATE_PR] = &lv_style_btn_tgl_pr;
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ext->styles_btn[LV_BTN_STATE_INA] = &lv_style_btn_ina;
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ext->anim_time = LV_LIST_FOCUS_TIME;
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lv_obj_set_signal_func(new_list, lv_list_signal);
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/*Init the new list object*/
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if(copy == NULL) {
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lv_obj_set_size(new_list, 2 * LV_DPI, 3 * LV_DPI);
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lv_page_set_scrl_layout(new_list, LV_LIST_LAYOUT_DEF);
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lv_list_set_sb_mode(new_list, LV_SB_MODE_DRAG);
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/*Set the default styles*/
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lv_theme_t *th = lv_theme_get_current();
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if(th) {
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lv_list_set_style(new_list, LV_LIST_STYLE_BG, th->list.bg);
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lv_list_set_style(new_list, LV_LIST_STYLE_SCRL, th->list.scrl);
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lv_list_set_style(new_list, LV_LIST_STYLE_SB, th->list.sb);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_REL, th->list.btn.rel);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_PR, th->list.btn.pr);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_TGL_REL, th->list.btn.tgl_rel);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_TGL_PR, th->list.btn.tgl_pr);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_INA, th->list.btn.ina);
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} else {
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lv_list_set_style(new_list, LV_LIST_STYLE_BG, &lv_style_transp_fit);
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lv_list_set_style(new_list, LV_LIST_STYLE_SCRL, &lv_style_pretty);
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}
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} else {
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lv_list_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
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lv_obj_t *copy_btn = lv_obj_get_child_back(lv_page_get_scrl(copy), NULL);
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lv_obj_t *new_btn;
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while(copy_btn) {
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new_btn = lv_btn_create(new_list, copy_btn);
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lv_obj_t *copy_img = lv_list_get_btn_img(copy_btn);
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if(copy_img) lv_img_create(new_btn, copy_img);
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lv_label_create(new_btn, lv_list_get_btn_label(copy_btn));
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copy_btn = lv_obj_get_child_back(lv_page_get_scrl(copy), copy_btn);
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}
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_REL, copy_ext->styles_btn[LV_BTN_STATE_REL]);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_PR, copy_ext->styles_btn[LV_BTN_STATE_PR]);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_TGL_REL, copy_ext->styles_btn[LV_BTN_STATE_TGL_REL]);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_TGL_PR, copy_ext->styles_btn[LV_BTN_STATE_TGL_REL]);
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lv_list_set_style(new_list, LV_LIST_STYLE_BTN_INA, copy_ext->styles_btn[LV_BTN_STATE_INA]);
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/*Refresh the style with new signal function*/
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lv_obj_refresh_style(new_list);
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}
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return new_list;
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}
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/*======================
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* Add/remove functions
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*=====================*/
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/**
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* Add a list element to the list
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* @param list pointer to list object
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* @param img_fn file name of an image before the text (NULL if unused)
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* @param txt text of the list element (NULL if unused)
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* @param rel_action pointer to release action function (like with lv_btn)
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* @return pointer to the new list element which can be customized (a button)
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*/
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lv_obj_t * lv_list_add(lv_obj_t * list, const char * img_fn, const char * txt, lv_action_t rel_action)
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{
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lv_style_t * style = lv_obj_get_style(list);
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lv_list_ext_t * ext = lv_obj_get_ext_attr(list);
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/*Create a list element with the image an the text*/
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lv_obj_t * liste;
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liste = lv_btn_create(list, NULL);
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lv_btn_set_style(liste, LV_BTN_STYLE_REL, ext->styles_btn[LV_BTN_STATE_REL]);
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lv_btn_set_style(liste, LV_BTN_STYLE_PR, ext->styles_btn[LV_BTN_STATE_PR]);
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lv_btn_set_style(liste, LV_BTN_STYLE_TGL_REL, ext->styles_btn[LV_BTN_STATE_TGL_REL]);
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lv_btn_set_style(liste, LV_BTN_STYLE_TGL_PR, ext->styles_btn[LV_BTN_STATE_TGL_PR]);
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lv_btn_set_style(liste, LV_BTN_STYLE_INA, ext->styles_btn[LV_BTN_STATE_INA]);
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lv_btn_set_action(liste, LV_BTN_ACTION_REL, rel_action);
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lv_page_glue_obj(liste, true);
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lv_btn_set_layout(liste, LV_LAYOUT_ROW_M);
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lv_btn_set_fit(liste, false, true);
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if(btn_signal == NULL) btn_signal = lv_obj_get_signal_func(liste);
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/*Make the size adjustment*/
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cord_t w = lv_obj_get_width(list);
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lv_style_t * style_scrl = lv_obj_get_style(lv_page_get_scrl(list));
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cord_t pad_hor_tot = style->body.padding.hor + style_scrl->body.padding.hor;
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w -= pad_hor_tot * 2;
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lv_obj_set_width(liste, w);
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#if USE_LV_IMG != 0 && USE_FSINT != 0
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if(img_fn != NULL && img_fn[0] != '\0') {
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lv_obj_t * img = lv_img_create(liste, NULL);
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lv_img_set_file(img, img_fn);
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lv_obj_set_style(img, ext->style_img);
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lv_obj_set_click(img, false);
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if(img_signal == NULL) img_signal = lv_obj_get_signal_func(img);
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}
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#endif
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if(txt != NULL) {
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lv_obj_t * label = lv_label_create(liste, NULL);
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lv_label_set_text(label, txt);
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lv_obj_set_click(label, false);
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lv_label_set_long_mode(label, LV_LABEL_LONG_ROLL);
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lv_obj_set_width(label, liste->coords.x2 - label->coords.x1);
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if(label_signal == NULL) label_signal = lv_obj_get_signal_func(label);
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}
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return liste;
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}
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/*=====================
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* Setter functions
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*====================*/
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/**
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* Set scroll animation duration on 'list_up()' 'list_down()' 'list_focus()'
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* @param list pointer to a list object
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* @param anim_time duration of animation [ms]
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*/
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void lv_list_set_anim_time(lv_obj_t *list, uint16_t anim_time)
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{
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lv_list_ext_t * ext = lv_obj_get_ext_attr(list);
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ext->anim_time = anim_time;
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}
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/**
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* Set a style of a list
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* @param list pointer to a list object
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* @param type which style should be set
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* @param style pointer to a style
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*/
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void lv_list_set_style(lv_obj_t *list, lv_list_style_t type, lv_style_t *style)
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{
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lv_list_ext_t *ext = lv_obj_get_ext_attr(list);
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lv_btn_style_t btn_style_refr = LV_BTN_STYLE_REL;
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lv_obj_t *btn;
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switch (type) {
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case LV_LIST_STYLE_BG:
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lv_page_set_style(list, LV_PAGE_STYLE_BG, style);
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break;
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case LV_LIST_STYLE_SCRL:
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lv_page_set_style(list, LV_PAGE_STYLE_SCRL, style);
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break;
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case LV_LIST_STYLE_SB:
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lv_page_set_style(list, LV_PAGE_STYLE_SB, style);
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break;
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case LV_LIST_STYLE_BTN_REL:
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ext->styles_btn[LV_BTN_STATE_REL] = style;
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btn_style_refr = LV_BTN_STYLE_REL;
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break;
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case LV_LIST_STYLE_BTN_PR:
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ext->styles_btn[LV_BTN_STATE_PR] = style;
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btn_style_refr = LV_BTN_STYLE_PR;
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break;
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case LV_LIST_STYLE_BTN_TGL_REL:
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ext->styles_btn[LV_BTN_STATE_TGL_REL] = style;
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btn_style_refr = LV_BTN_STYLE_TGL_REL;
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break;
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case LV_LIST_STYLE_BTN_TGL_PR:
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ext->styles_btn[LV_BTN_STATE_TGL_PR] = style;
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btn_style_refr = LV_BTN_STYLE_TGL_PR;
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break;
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case LV_LIST_STYLE_BTN_INA:
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ext->styles_btn[LV_BTN_STATE_INA] = style;
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btn_style_refr = LV_BTN_STYLE_INA;
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break;
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}
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/*Refresh existing buttons' style*/
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if(type == LV_LIST_STYLE_BTN_PR || type == LV_LIST_STYLE_BTN_REL ||
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type == LV_LIST_STYLE_BTN_TGL_REL || type == LV_LIST_STYLE_BTN_TGL_PR ||
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type == LV_LIST_STYLE_BTN_INA)
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{
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btn= get_next_btn(list, NULL);
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while(btn != NULL) {
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lv_btn_set_style(btn, btn_style_refr, ext->styles_btn[btn_style_refr]);
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btn = get_next_btn(list, btn);
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}
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}
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}
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/*=====================
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* Getter functions
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*====================*/
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/**
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* Get the text of a list element
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* @param btn pointer to list element
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* @return pointer to the text
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*/
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const char * lv_list_get_btn_text(lv_obj_t * btn)
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{
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lv_obj_t * label = lv_list_get_btn_label(btn);
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if(label == NULL) return "";
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return lv_label_get_text(label);
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}
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/**
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* Get the label object from a list element
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* @param btn pointer to a list element (button)
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* @return pointer to the label from the list element or NULL if not found
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*/
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lv_obj_t * lv_list_get_btn_label(lv_obj_t * btn)
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{
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lv_obj_t * label = lv_obj_get_child(btn, NULL);
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if(label == NULL) return NULL;
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while(label->signal_func != label_signal) {
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label = lv_obj_get_child(btn, label);
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if(label == NULL) break;
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}
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return label;
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}
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/**
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* Get the image object from a list element
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* @param btn pointer to a list element (button)
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* @return pointer to the image from the list element or NULL if not found
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*/
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lv_obj_t * lv_list_get_btn_img(lv_obj_t * btn)
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{
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#if USE_LV_IMG != 0 && USE_FSINT != 0
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lv_obj_t * img = lv_obj_get_child(btn, NULL);
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if(img == NULL) return NULL;
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while(img->signal_func != img_signal) {
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img = lv_obj_get_child(btn, img);
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if(img == NULL) break;
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}
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return img;
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#else
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return NULL;
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#endif
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}
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/**
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* Get scroll animation duration
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* @param list pointer to a list object
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* @return duration of animation [ms]
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*/
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uint16_t lv_list_get_anim_time(lv_obj_t *list)
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{
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lv_list_ext_t * ext = lv_obj_get_ext_attr(list);
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return ext->anim_time;
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}
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/**
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* Get a style of a list
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* @param list pointer to a list object
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* @param type which style should be get
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* @return style pointer to a style
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* */
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lv_style_t * lv_list_get_style(lv_obj_t *list, lv_list_style_t type)
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{
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lv_list_ext_t *ext = lv_obj_get_ext_attr(list);
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switch (type) {
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case LV_LIST_STYLE_BG: return lv_page_get_style(list, LV_PAGE_STYLE_BG);
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case LV_LIST_STYLE_SCRL: return lv_page_get_style(list, LV_PAGE_STYLE_SB);
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case LV_LIST_STYLE_SB: return lv_page_get_style(list, LV_PAGE_STYLE_SCRL);
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case LV_LIST_STYLE_BTN_REL: return ext->styles_btn[LV_BTN_STATE_REL];
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case LV_LIST_STYLE_BTN_PR: return ext->styles_btn[LV_BTN_STATE_PR];
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case LV_LIST_STYLE_BTN_TGL_REL: return ext->styles_btn[LV_BTN_STATE_TGL_REL];
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case LV_LIST_STYLE_BTN_TGL_PR: return ext->styles_btn[LV_BTN_STATE_TGL_PR];
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case LV_LIST_STYLE_BTN_INA: return ext->styles_btn[LV_BTN_STATE_INA];
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default: return NULL;
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}
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/*To avoid warning*/
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return NULL;
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}
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/*=====================
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* Other functions
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*====================*/
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/**
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* Move the list elements up by one
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* @param list pointer a to list object
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*/
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void lv_list_up(lv_obj_t * list)
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{
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/*Search the first list element which 'y' coordinate is below the parent
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* and position the list to show this element on the bottom*/
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lv_obj_t * scrl = lv_page_get_scrl(list);
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lv_obj_t * e;
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lv_obj_t * e_prev = NULL;
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e = get_next_btn(list, NULL);
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while(e != NULL) {
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if(e->coords.y2 <= list->coords.y2) {
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if(e_prev != NULL) {
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cord_t new_y = lv_obj_get_height(list) - (lv_obj_get_y(e_prev) + lv_obj_get_height(e_prev));
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lv_list_ext_t *ext = lv_obj_get_ext_attr(list);
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if(ext->anim_time == 0) {
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lv_obj_set_y(scrl, new_y);
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} else {
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anim_t a;
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a.var = scrl;
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a.start = lv_obj_get_y(scrl);
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a.end = new_y;
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a.fp = (anim_fp_t)lv_obj_set_y;
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a.path = anim_get_path(ANIM_PATH_LIN);
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a.end_cb = NULL;
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a.act_time = 0;
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a.time = LV_LIST_FOCUS_TIME;
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a.playback = 0;
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a.playback_pause = 0;
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a.repeat = 0;
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a.repeat_pause = 0;
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anim_create(&a);
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}
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}
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break;
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}
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e_prev = e;
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e = get_next_btn(list, e);
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}
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}
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/**
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* Move the list elements down by one
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* @param list pointer to a list object
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*/
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void lv_list_down(lv_obj_t * list)
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{
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/*Search the first list element which 'y' coordinate is above the parent
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* and position the list to show this element on the top*/
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lv_obj_t * scrl = lv_page_get_scrl(list);
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lv_obj_t * e;
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e = get_next_btn(list, NULL);
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while(e != NULL) {
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if(e->coords.y1 < list->coords.y1) {
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cord_t new_y = -lv_obj_get_y(e);
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lv_list_ext_t *ext = lv_obj_get_ext_attr(list);
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if(ext->anim_time == 0) {
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lv_obj_set_y(scrl, new_y);
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} else {
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anim_t a;
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a.var = scrl;
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a.start = lv_obj_get_y(scrl);
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a.end = new_y;
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a.fp = (anim_fp_t)lv_obj_set_y;
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a.path = anim_get_path(ANIM_PATH_LIN);
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a.end_cb = NULL;
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a.act_time = 0;
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a.time = LV_LIST_FOCUS_TIME;
|
|
a.playback = 0;
|
|
a.playback_pause = 0;
|
|
a.repeat = 0;
|
|
a.repeat_pause = 0;
|
|
anim_create(&a);
|
|
}
|
|
break;
|
|
}
|
|
e = get_next_btn(list, e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Focus on a list button. It ensures that the button will be visible on the list.
|
|
* @param btn pointer to a list button to focus
|
|
* @param anim_en true: scroll with animation, false: without animation
|
|
*/
|
|
void lv_list_focus(lv_obj_t *btn, bool anim_en)
|
|
{
|
|
lv_obj_t *list = lv_obj_get_parent(lv_obj_get_parent(btn));
|
|
|
|
lv_page_focus(list, btn, anim_en == false ? 0 :lv_list_get_anim_time(list));
|
|
}
|
|
|
|
/**********************
|
|
* STATIC FUNCTIONS
|
|
**********************/
|
|
|
|
/**
|
|
* Signal function of the list
|
|
* @param list pointer to a list object
|
|
* @param sign a signal type from lv_signal_t enum
|
|
* @param param pointer to a signal specific variable
|
|
* @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
|
|
*/
|
|
static lv_res_t lv_list_signal(lv_obj_t * list, lv_signal_t sign, void * param)
|
|
{
|
|
lv_res_t res;
|
|
|
|
/* Include the ancient signal function */
|
|
res = ancestor_signal(list, sign, param);
|
|
if(res != LV_RES_OK) return res;
|
|
|
|
if(sign == LV_SIGNAL_CORD_CHG) {
|
|
/*Be sure the width of the buttons are correct*/
|
|
cord_t w = lv_obj_get_width(list);
|
|
if(w != area_get_width(param)) { /*Width changed*/
|
|
refr_btn_width(list);
|
|
}
|
|
}
|
|
else if(sign == LV_SIGNAL_STYLE_CHG) {
|
|
/*Because of the possible change of horizontal and vertical padding refresh buttons width */
|
|
refr_btn_width(list);
|
|
}
|
|
else if(sign == LV_SIGNAL_FOCUS) {
|
|
/*Get the first button*/
|
|
lv_obj_t * btn = NULL;
|
|
lv_obj_t * btn_prev = NULL;
|
|
btn = get_next_btn(list, btn);
|
|
while(btn != NULL) {
|
|
btn_prev = btn;
|
|
btn = get_next_btn(list, btn);
|
|
}
|
|
if(btn_prev != NULL) {
|
|
lv_btn_set_state(btn_prev, LV_BTN_STATE_PR);
|
|
}
|
|
}
|
|
else if(sign == LV_SIGNAL_DEFOCUS) {
|
|
/*Get the 'pressed' button*/
|
|
lv_obj_t * btn = NULL;
|
|
btn = get_next_btn(list, btn);
|
|
while(btn != NULL) {
|
|
if(lv_btn_get_state(btn) == LV_BTN_STATE_PR) break;
|
|
btn = get_next_btn(list, btn);
|
|
}
|
|
|
|
if(btn != NULL) {
|
|
lv_btn_set_state(btn, LV_BTN_STATE_REL);
|
|
}
|
|
}
|
|
else if(sign == LV_SIGNAL_CONTROLL) {
|
|
char c = *((char*)param);
|
|
if(c == LV_GROUP_KEY_RIGHT || c == LV_GROUP_KEY_DOWN) {
|
|
/*Get the last pressed button*/
|
|
lv_obj_t * btn = NULL;
|
|
lv_obj_t * btn_prev = NULL;
|
|
lv_list_ext_t *ext = lv_obj_get_ext_attr(list);
|
|
btn = get_next_btn(list, btn);
|
|
while(btn != NULL) {
|
|
if(lv_btn_get_state(btn) == LV_BTN_STATE_PR) break;
|
|
btn_prev = btn;
|
|
btn = get_next_btn(list, btn);
|
|
}
|
|
|
|
if(btn_prev != NULL && btn != NULL) {
|
|
lv_btn_set_state(btn, LV_BTN_STATE_REL);
|
|
lv_btn_set_state(btn_prev, LV_BTN_STATE_PR);
|
|
lv_page_focus(list, btn_prev, ext->anim_time);
|
|
}
|
|
}
|
|
else if(c == LV_GROUP_KEY_LEFT || c == LV_GROUP_KEY_UP) {
|
|
/*Get the last pressed button*/
|
|
lv_obj_t * btn = NULL;
|
|
lv_list_ext_t *ext = lv_obj_get_ext_attr(list);
|
|
btn = get_next_btn(list, btn);
|
|
while(btn != NULL) {
|
|
if(lv_btn_get_state(btn) == LV_BTN_STATE_PR) break;
|
|
btn = get_next_btn(list, btn);
|
|
}
|
|
|
|
if(btn != NULL) {
|
|
lv_obj_t * btn_prev = get_next_btn(list, btn);
|
|
if(btn_prev != NULL) {
|
|
lv_btn_set_state(btn, LV_BTN_STATE_REL);
|
|
lv_btn_set_state(btn_prev, LV_BTN_STATE_PR);
|
|
lv_page_focus(list, btn_prev, ext->anim_time);
|
|
}
|
|
}
|
|
} else if(c == LV_GROUP_KEY_ENTER) {
|
|
/*Get the 'pressed' button*/
|
|
lv_obj_t * btn = NULL;
|
|
btn = get_next_btn(list, btn);
|
|
while(btn != NULL) {
|
|
if(lv_btn_get_state(btn) == LV_BTN_STATE_PR) break;
|
|
btn = get_next_btn(list, btn);
|
|
}
|
|
|
|
if(btn != NULL) {
|
|
lv_action_t rel_action;
|
|
rel_action = lv_btn_get_action(btn, LV_BTN_ACTION_REL);
|
|
if(rel_action != NULL) rel_action(btn);
|
|
}
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* Get the next button from list
|
|
* @param list pointer to a list object
|
|
* @param prev_btn pointer to button. Search the next after it.
|
|
* @return pointer to the next button or NULL
|
|
*/
|
|
static lv_obj_t * get_next_btn(lv_obj_t * list, lv_obj_t * prev_btn)
|
|
{
|
|
/* Not a good practice but user can add/create objects to the lists manually.
|
|
* When getting the next button try to be sure that it is at least a button */
|
|
|
|
lv_obj_t * btn ;
|
|
lv_obj_t * scrl = lv_page_get_scrl(list);
|
|
|
|
btn = lv_obj_get_child(scrl, prev_btn);
|
|
if(btn == NULL) return NULL;
|
|
|
|
while(btn->signal_func != btn_signal) {
|
|
btn = lv_obj_get_child(scrl, prev_btn);
|
|
if(btn == NULL) break;
|
|
}
|
|
|
|
return btn;
|
|
}
|
|
|
|
static void refr_btn_width(lv_obj_t *list)
|
|
{
|
|
lv_style_t *style = lv_list_get_style(list, LV_LIST_STYLE_BG);
|
|
lv_style_t *style_scrl = lv_obj_get_style(lv_page_get_scrl(list));
|
|
cord_t w = lv_obj_get_width(list);
|
|
cord_t btn_w = w - (style->body.padding.hor + style_scrl->body.padding.hor) * 2;
|
|
|
|
lv_obj_t *btn = get_next_btn(list, NULL);
|
|
while(btn) {
|
|
/*Make the size adjustment for each buttons*/
|
|
if(lv_obj_get_width(btn) != btn_w) {
|
|
lv_obj_set_width(btn, btn_w);
|
|
/*Set the label size to roll its text*/
|
|
lv_obj_t *label = lv_list_get_btn_label(btn);
|
|
lv_obj_set_width(label, btn->coords.x2 - label->coords.x1);
|
|
lv_label_set_text(label, NULL);
|
|
}
|
|
btn = get_next_btn(list, btn);
|
|
}
|
|
}
|
|
|
|
|
|
#endif
|