lvgl_cpp/lvgl/extra/widgets/tabview/lv_tabview.c

314 lines
9.1 KiB
C

/**
* @file lv_tabview.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_tabview.h"
#if LV_USE_TABVIEW
#include "../../../misc/lv_assert.h"
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_tabview_class
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_tabview_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_tabview_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_tabview_event(const lv_obj_class_t * class_p, lv_event_t * e);
static void btns_value_changed_event_cb(lv_event_t * e);
static void cont_scroll_end_event_cb(lv_event_t * e);
/**********************
* STATIC VARIABLES
**********************/
const lv_obj_class_t lv_tabview_class = {
.constructor_cb = lv_tabview_constructor,
.destructor_cb = lv_tabview_destructor,
.event_cb = lv_tabview_event,
.width_def = LV_PCT(100),
.height_def = LV_PCT(100),
.base_class = &lv_obj_class,
.instance_size = sizeof(lv_tabview_t)
};
static lv_dir_t tabpos_create;
static lv_coord_t tabsize_create;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_obj_t * lv_tabview_create(lv_obj_t * parent, lv_dir_t tab_pos, lv_coord_t tab_size)
{
LV_LOG_INFO("begin");
tabpos_create = tab_pos;
tabsize_create = tab_size;
lv_obj_t * obj = lv_obj_class_create_obj(&lv_tabview_class, parent);
lv_obj_class_init_obj(obj);
return obj;
}
lv_obj_t * lv_tabview_add_tab(lv_obj_t * obj, const char * name)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_tabview_t * tabview = (lv_tabview_t *)obj;
lv_obj_t * cont = lv_tabview_get_content(obj);
lv_obj_t * page = lv_obj_create(cont);
lv_obj_set_size(page, LV_PCT(100), LV_PCT(100));
lv_obj_clear_flag(page, LV_OBJ_FLAG_CLICK_FOCUSABLE);
uint32_t tab_id = lv_obj_get_child_cnt(cont);
lv_obj_t * btns = lv_tabview_get_tab_btns(obj);
char ** old_map = tabview->map;
char ** new_map;
/*top or bottom dir*/
if(tabview->tab_pos & LV_DIR_VER) {
new_map = lv_mem_alloc((tab_id + 1) * sizeof(const char *));
lv_memcpy_small(new_map, old_map, sizeof(const char *) * (tab_id - 1));
new_map[tab_id - 1] = lv_mem_alloc(strlen(name) + 1);
strcpy((char *)new_map[tab_id - 1], name);
new_map[tab_id] = "";
}
/*left or right dir*/
else {
new_map = lv_mem_alloc((tab_id * 2) * sizeof(const char *));
lv_memcpy_small(new_map, old_map, sizeof(const char *) * (tab_id - 1) * 2);
if(tabview->tab_cnt == 0) {
new_map[0] = lv_mem_alloc(strlen(name) + 1);
strcpy((char *)new_map[0], name);
new_map[1] = "";
}
else {
new_map[tab_id * 2 - 3] = "\n";
new_map[tab_id * 2 - 2] = lv_mem_alloc(strlen(name) + 1);
new_map[tab_id * 2 - 1] = "";
strcpy((char *)new_map[(tab_id * 2) - 2], name);
}
}
tabview->map = new_map;
lv_btnmatrix_set_map(btns, (const char **)new_map);
lv_mem_free(old_map);
lv_btnmatrix_set_btn_ctrl_all(btns, LV_BTNMATRIX_CTRL_CHECKABLE | LV_BTNMATRIX_CTRL_CLICK_TRIG |
LV_BTNMATRIX_CTRL_NO_REPEAT);
tabview->tab_cnt++;
if(tabview->tab_cnt == 1) {
lv_tabview_set_act(obj, 0, LV_ANIM_OFF);
}
lv_btnmatrix_set_btn_ctrl(btns, tabview->tab_cur, LV_BTNMATRIX_CTRL_CHECKED);
return page;
}
void lv_tabview_set_act(lv_obj_t * obj, uint32_t id, lv_anim_enable_t anim_en)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_tabview_t * tabview = (lv_tabview_t *)obj;
if(id >= tabview->tab_cnt) {
id = tabview->tab_cnt - 1;
}
/*To be sure lv_obj_get_content_width will return valid value*/
lv_obj_update_layout(obj);
lv_obj_t * cont = lv_tabview_get_content(obj);
if(cont == NULL) return;
lv_coord_t gap = lv_obj_get_style_pad_column(cont, LV_PART_MAIN);
lv_coord_t w = lv_obj_get_content_width(cont);
if(lv_obj_get_style_base_dir(obj, LV_PART_MAIN) != LV_BASE_DIR_RTL) {
lv_obj_scroll_to_x(cont, id * (gap + w), anim_en);
}
else {
int32_t id_rtl = -(int32_t)id;
lv_obj_scroll_to_x(cont, (gap + w) * id_rtl, anim_en);
}
lv_obj_t * btns = lv_tabview_get_tab_btns(obj);
lv_btnmatrix_set_btn_ctrl(btns, id, LV_BTNMATRIX_CTRL_CHECKED);
tabview->tab_cur = id;
}
uint16_t lv_tabview_get_tab_act(lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_tabview_t * tabview = (lv_tabview_t *)obj;
return tabview->tab_cur;
}
lv_obj_t * lv_tabview_get_content(lv_obj_t * tv)
{
return lv_obj_get_child(tv, 1);
}
lv_obj_t * lv_tabview_get_tab_btns(lv_obj_t * tv)
{
return lv_obj_get_child(tv, 0);
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_tabview_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
lv_tabview_t * tabview = (lv_tabview_t *)obj;
tabview->tab_pos = tabpos_create;
switch(tabview->tab_pos) {
case LV_DIR_TOP:
lv_obj_set_flex_flow(obj, LV_FLEX_FLOW_COLUMN);
break;
case LV_DIR_BOTTOM:
lv_obj_set_flex_flow(obj, LV_FLEX_FLOW_COLUMN_REVERSE);
break;
case LV_DIR_LEFT:
lv_obj_set_flex_flow(obj, LV_FLEX_FLOW_ROW);
break;
case LV_DIR_RIGHT:
lv_obj_set_flex_flow(obj, LV_FLEX_FLOW_ROW_REVERSE);
break;
}
lv_obj_set_size(obj, LV_PCT(100), LV_PCT(100));
lv_obj_t * btnm;
lv_obj_t * cont;
btnm = lv_btnmatrix_create(obj);
cont = lv_obj_create(obj);
lv_btnmatrix_set_one_checked(btnm, true);
tabview->map = lv_mem_alloc(sizeof(const char *));
tabview->map[0] = "";
lv_btnmatrix_set_map(btnm, (const char **)tabview->map);
lv_obj_add_event_cb(btnm, btns_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
lv_obj_add_flag(btnm, LV_OBJ_FLAG_EVENT_BUBBLE);
lv_obj_add_event_cb(cont, cont_scroll_end_event_cb, LV_EVENT_ALL, NULL);
lv_obj_set_scrollbar_mode(cont, LV_SCROLLBAR_MODE_OFF);
switch(tabview->tab_pos) {
case LV_DIR_TOP:
case LV_DIR_BOTTOM:
lv_obj_set_size(btnm, LV_PCT(100), tabsize_create);
lv_obj_set_width(cont, LV_PCT(100));
lv_obj_set_flex_grow(cont, 1);
break;
case LV_DIR_LEFT:
case LV_DIR_RIGHT:
lv_obj_set_size(btnm, tabsize_create, LV_PCT(100));
lv_obj_set_height(cont, LV_PCT(100));
lv_obj_set_flex_grow(cont, 1);
break;
}
lv_group_t * g = lv_group_get_default();
if(g) lv_group_add_obj(g, btnm);
lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_ROW);
lv_obj_set_scroll_snap_x(cont, LV_SCROLL_SNAP_CENTER);
lv_obj_add_flag(cont, LV_OBJ_FLAG_SCROLL_ONE);
lv_obj_clear_flag(cont, LV_OBJ_FLAG_SCROLL_ON_FOCUS);
}
static void lv_tabview_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
lv_tabview_t * tabview = (lv_tabview_t *)obj;
uint32_t i;
if(tabview->tab_pos & LV_DIR_VER) {
for(i = 0; i < tabview->tab_cnt; i++) {
lv_mem_free(tabview->map[i]);
tabview->map[i] = NULL;
}
}
if(tabview->tab_pos & LV_DIR_HOR) {
for(i = 0; i < tabview->tab_cnt; i++) {
lv_mem_free(tabview->map[i * 2]);
tabview->map[i * 2] = NULL;
}
}
lv_mem_free(tabview->map);
tabview->map = NULL;
}
static void lv_tabview_event(const lv_obj_class_t * class_p, lv_event_t * e)
{
LV_UNUSED(class_p);
lv_res_t res = lv_obj_event_base(&lv_tabview_class, e);
if(res != LV_RES_OK) return;
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * target = lv_event_get_target(e);
if(code == LV_EVENT_SIZE_CHANGED) {
lv_tabview_set_act(target, lv_tabview_get_tab_act(target), LV_ANIM_OFF);
}
}
static void btns_value_changed_event_cb(lv_event_t * e)
{
lv_obj_t * btns = lv_event_get_target(e);
lv_obj_t * tv = lv_obj_get_parent(btns);
uint32_t id = lv_btnmatrix_get_selected_btn(btns);
lv_tabview_set_act(tv, id, LV_ANIM_ON);
}
static void cont_scroll_end_event_cb(lv_event_t * e)
{
lv_obj_t * cont = lv_event_get_target(e);
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * tv = lv_obj_get_parent(cont);
if(code == LV_EVENT_LAYOUT_CHANGED) {
lv_tabview_set_act(tv, lv_tabview_get_tab_act(tv), LV_ANIM_OFF);
}
else if(code == LV_EVENT_SCROLL_END) {
lv_point_t p;
lv_obj_get_scroll_end(cont, &p);
lv_coord_t w = lv_obj_get_content_width(cont);
lv_coord_t t;
if(lv_obj_get_style_base_dir(tv, LV_PART_MAIN) == LV_BASE_DIR_RTL) t = -(p.x - w / 2) / w;
else t = (p.x + w / 2) / w;
if(t < 0) t = 0;
bool new_tab = false;
if(t != lv_tabview_get_tab_act(tv)) new_tab = true;
lv_tabview_set_act(tv, t, LV_ANIM_ON);
if(new_tab) lv_event_send(tv, LV_EVENT_VALUE_CHANGED, NULL);
}
}
#endif /*LV_USE_TABVIEW*/