/**
* @file lv_btnm.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_btnm.h"
#if USE_LV_BTNM != 0
#include "../lv_core/lv_group.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_core/lv_refr.h"
#include "../lv_themes/lv_theme.h"
#include "../lv_misc/lv_txt.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_res_t lv_btnm_signal(lv_obj_t * btnm, lv_signal_t sign, void * param);
static bool lv_btnm_design(lv_obj_t * btnm, const lv_area_t * mask, lv_design_mode_t mode);
static uint8_t get_button_width(const char * btn_str);
static bool button_is_hidden(const char * btn_str);
static bool button_is_repeat_disabled(const char * btn_str);
static bool button_is_inactive(const char * btn_str);
const char * cut_ctrl_byte(const char * btn_str);
static uint16_t get_button_from_point(lv_obj_t * btnm, lv_point_t * p);
static uint16_t get_button_text(lv_obj_t * btnm, uint16_t btn_id);
static void allocate_btn_areas(lv_obj_t * btnm, const char ** map);
/**********************
* STATIC VARIABLES
**********************/
static const char * lv_btnm_def_map[] = {"Btn1", "Btn2", "Btn3", "\n",
"\002Btn4", "Btn5", ""
};
static lv_design_func_t ancestor_design_f;
static lv_signal_func_t ancestor_signal;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a button matrix objects
* @param par pointer to an object, it will be the parent of the new button matrix
* @param copy pointer to a button matrix object, if not NULL then the new object will be copied from it
* @return pointer to the created button matrix
*/
lv_obj_t * lv_btnm_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("button matrix create started");
/*Create the ancestor object*/
lv_obj_t * new_btnm = lv_obj_create(par, copy);
lv_mem_assert(new_btnm);
if(new_btnm == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_btnm);
/*Allocate the object type specific extended data*/
lv_btnm_ext_t * ext = lv_obj_allocate_ext_attr(new_btnm, sizeof(lv_btnm_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
ext->btn_cnt = 0;
ext->btn_id_pr = LV_BTNM_PR_NONE;
ext->btn_id_tgl = LV_BTNM_PR_NONE;
ext->button_areas = NULL;
ext->action = NULL;
ext->map_p = NULL;
ext->toggle = 0;
ext->recolor = 0;
ext->styles_btn[LV_BTN_STATE_REL] = &lv_style_btn_rel;
ext->styles_btn[LV_BTN_STATE_PR] = &lv_style_btn_pr;
ext->styles_btn[LV_BTN_STATE_TGL_REL] = &lv_style_btn_tgl_rel;
ext->styles_btn[LV_BTN_STATE_TGL_PR] = &lv_style_btn_tgl_pr;
ext->styles_btn[LV_BTN_STATE_INA] = &lv_style_btn_ina;
if(ancestor_design_f == NULL) ancestor_design_f = lv_obj_get_design_func(new_btnm);
lv_obj_set_signal_func(new_btnm, lv_btnm_signal);
lv_obj_set_design_func(new_btnm, lv_btnm_design);
/*Init the new button matrix object*/
if(copy == NULL) {
lv_obj_set_size(new_btnm, LV_HOR_RES / 2, LV_VER_RES / 4);
lv_btnm_set_map(new_btnm, lv_btnm_def_map);
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
lv_btnm_set_style(new_btnm, LV_BTNM_STYLE_BG, th->btnm.bg);
lv_btnm_set_style(new_btnm, LV_BTNM_STYLE_BTN_REL, th->btnm.btn.rel);
lv_btnm_set_style(new_btnm, LV_BTNM_STYLE_BTN_PR, th->btnm.btn.pr);
lv_btnm_set_style(new_btnm, LV_BTNM_STYLE_BTN_TGL_REL, th->btnm.btn.tgl_rel);
lv_btnm_set_style(new_btnm, LV_BTNM_STYLE_BTN_TGL_PR, th->btnm.btn.tgl_pr);
lv_btnm_set_style(new_btnm, LV_BTNM_STYLE_BTN_INA, th->btnm.btn.ina);
} else {
lv_obj_set_style(new_btnm, &lv_style_pretty);
}
}
/*Copy an existing object*/
else {
lv_btnm_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
memcpy(ext->styles_btn, copy_ext->styles_btn, sizeof(ext->styles_btn));
ext->action = copy_ext->action;
ext->toggle = copy_ext->toggle;
ext->btn_id_tgl = copy_ext->btn_id_tgl;
lv_btnm_set_map(new_btnm, lv_btnm_get_map(copy));
}
LV_LOG_INFO("button matrix created");
return new_btnm;
}
/*=====================
* Setter functions
*====================*/
/**
* Set a new map. Buttons will be created/deleted according to the map.
* @param btnm pointer to a button matrix object
* @param map pointer a string array. The last string has to be: "".
* Use "\n" to begin a new line.
* The first byte can be a control data:
* - bit 7: always 1
* - bit 6: always 0
* - bit 5: inactive (disabled) (\24x)
* - bit 4: no repeat (on long press) (\22x)
* - bit 3: hidden (\21x)
* - bit 2..0: button relative width
* Example (practically use octal numbers): "\224abc": "abc" text with 4 width and no long press
*/
void lv_btnm_set_map(lv_obj_t * btnm, const char ** map)
{
if(map == NULL) return;
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
ext->map_p = map;
/*Analyze the map and create the required number of buttons*/
allocate_btn_areas(btnm, map);
/*Set size and positions of the buttons*/
lv_style_t * style_bg = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BG);
lv_coord_t max_w = lv_obj_get_width(btnm) - 2 * style_bg->body.padding.hor;
lv_coord_t max_h = lv_obj_get_height(btnm) - 2 * style_bg->body.padding.ver;
lv_coord_t act_y = style_bg->body.padding.ver;
/*Count the lines to calculate button height*/
uint8_t line_cnt = 1;
uint8_t li;
for(li = 0; strlen(map[li]) != 0; li++) {
if(strcmp(map[li], "\n") == 0) line_cnt ++;
}
lv_coord_t btn_h = max_h - ((line_cnt - 1) * style_bg->body.padding.inner);
btn_h = btn_h / line_cnt;
btn_h --; /*-1 because e.g. height = 100 means 101 pixels (0..100)*/
/* Count the units and the buttons in a line
* (A button can be 1,2,3... unit wide)*/
uint16_t unit_cnt; /*Number of units in a row*/
uint16_t unit_act_cnt; /*Number of units currently put in a row*/
uint16_t btn_cnt; /*Number of buttons in a row*/
uint16_t i_tot = 0; /*Act. index in the str map*/
uint16_t btn_i = 0; /*Act. index of button areas*/
const char ** map_p_tmp = map;
/*Count the units and the buttons in a line*/
while(1) {
unit_cnt = 0;
btn_cnt = 0;
/*Count the buttons in a line*/
while(strcmp(map_p_tmp[btn_cnt], "\n") != 0 &&
strlen(map_p_tmp[btn_cnt]) != 0) { /*Check a line*/
unit_cnt += get_button_width(map_p_tmp[btn_cnt]);
btn_cnt ++;
}
/*Make sure the last row is at the bottom of 'btnm'*/
if(map_p_tmp[btn_cnt][0] == '\0') { /*Last row?*/
btn_h = max_h - act_y + style_bg->body.padding.ver - 1;
}
/*Only deal with the non empty lines*/
if(btn_cnt != 0) {
/*Calculate the width of all units*/
lv_coord_t all_unit_w = max_w - ((btn_cnt - 1) * style_bg->body.padding.inner);
/*Set the button size and positions and set the texts*/
uint16_t i;
lv_coord_t act_x = style_bg->body.padding.hor;
lv_coord_t act_unit_w;
unit_act_cnt = 0;
for(i = 0; i < btn_cnt; i++) {
/* one_unit_w = all_unit_w / unit_cnt
* act_unit_w = one_unit_w * button_width
* do this two operations but the multiply first to divide a greater number */
act_unit_w = (all_unit_w * get_button_width(map_p_tmp[i])) / unit_cnt;
act_unit_w --; /*-1 because e.g. width = 100 means 101 pixels (0..100)*/
/*Always recalculate act_x because of rounding errors */
act_x = (unit_act_cnt * all_unit_w) / unit_cnt + i * style_bg->body.padding.inner + style_bg->body.padding.hor;
/* Set the button's area.
* If inner padding is zero then use the prev. button x2 as x1 to avoid rounding errors*/
if(style_bg->body.padding.inner == 0 && act_x != style_bg->body.padding.hor) {
lv_area_set(&ext->button_areas[btn_i], ext->button_areas[btn_i - 1].x2, act_y,
act_x + act_unit_w, act_y + btn_h);
} else {
lv_area_set(&ext->button_areas[btn_i], act_x, act_y,
act_x + act_unit_w, act_y + btn_h);
}
unit_act_cnt += get_button_width(map_p_tmp[i]);
i_tot ++;
btn_i ++;
}
}
act_y += btn_h + style_bg->body.padding.inner;
if(strlen(map_p_tmp[btn_cnt]) == 0) break; /*Break on end of map*/
map_p_tmp = &map_p_tmp[btn_cnt + 1]; /*Set the map to the next line*/
i_tot ++; /*Skip the '\n'*/
}
lv_obj_invalidate(btnm);
}
/**
* Set a new callback function for the buttons (It will be called when a button is released)
* @param btnm: pointer to button matrix object
* @param cb pointer to a callback function
*/
void lv_btnm_set_action(lv_obj_t * btnm, lv_btnm_action_t action)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
ext->action = action;
}
/**
* Enable or disable button toggling
* @param btnm pointer to button matrix object
* @param en true: enable toggling; false: disable toggling
* @param id index of the currently toggled button (ignored if 'en' == false)
*/
void lv_btnm_set_toggle(lv_obj_t * btnm, bool en, uint16_t id)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
ext->toggle = en == false ? 0 : 1;
if(ext->toggle != 0) {
if(id >= ext->btn_cnt) id = ext->btn_cnt - 1;
ext->btn_id_tgl = id;
} else {
ext->btn_id_tgl = LV_BTNM_PR_NONE;
}
lv_obj_invalidate(btnm);
}
/**
* Set a style of a button matrix
* @param btnm pointer to a button matrix object
* @param type which style should be set
* @param style pointer to a style
*/
void lv_btnm_set_style(lv_obj_t * btnm, lv_btnm_style_t type, lv_style_t * style)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
switch(type) {
case LV_BTNM_STYLE_BG:
lv_obj_set_style(btnm, style);
break;
case LV_BTNM_STYLE_BTN_REL:
ext->styles_btn[LV_BTN_STATE_REL] = style;
lv_obj_invalidate(btnm);
break;
case LV_BTNM_STYLE_BTN_PR:
ext->styles_btn[LV_BTN_STATE_PR] = style;
lv_obj_invalidate(btnm);
break;
case LV_BTNM_STYLE_BTN_TGL_REL:
ext->styles_btn[LV_BTN_STATE_TGL_REL] = style;
lv_obj_invalidate(btnm);
break;
case LV_BTNM_STYLE_BTN_TGL_PR:
ext->styles_btn[LV_BTN_STATE_TGL_PR] = style;
lv_obj_invalidate(btnm);
break;
case LV_BTNM_STYLE_BTN_INA:
ext->styles_btn[LV_BTN_STATE_INA] = style;
lv_obj_invalidate(btnm);
break;
}
}
void lv_btnm_set_recolor(const lv_obj_t * btnm, bool en)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
ext->recolor = en;
lv_obj_invalidate(btnm);
}
/*=====================
* Getter functions
*====================*/
/**
* Get the current map of a button matrix
* @param btnm pointer to a button matrix object
* @return the current map
*/
const char ** lv_btnm_get_map(const lv_obj_t * btnm)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
return ext->map_p;
}
/**
* Get a the callback function of the buttons on a button matrix
* @param btnm: pointer to button matrix object
* @return pointer to the callback function
*/
lv_btnm_action_t lv_btnm_get_action(const lv_obj_t * btnm)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
return ext->action;
}
/**
* Get the pressed button
* @param btnm pointer to button matrix object
* @return index of the currently pressed button (LV_BTNM_PR_NONE: if unset)
*/
uint16_t lv_btnm_get_pressed(const lv_obj_t * btnm)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
return ext->btn_id_pr;
}
/**
* Get the toggled button
* @param btnm pointer to button matrix object
* @return index of the currently toggled button (LV_BTNM_PR_NONE: if unset)
*/
uint16_t lv_btnm_get_toggled(const lv_obj_t * btnm)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
if(ext->toggle == 0) return LV_BTNM_PR_NONE;
else return ext->btn_id_tgl;
}
/**
* Get a style of a button matrix
* @param btnm pointer to a button matrix object
* @param type which style should be get
* @return style pointer to a style
*/
lv_style_t * lv_btnm_get_style(const lv_obj_t * btnm, lv_btnm_style_t type)
{
lv_style_t * style = NULL;
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
switch(type) {
case LV_BTNM_STYLE_BG:
style = lv_obj_get_style(btnm);
break;
case LV_BTNM_STYLE_BTN_REL:
style = ext->styles_btn[LV_BTN_STATE_REL];
break;
case LV_BTNM_STYLE_BTN_PR:
style = ext->styles_btn[LV_BTN_STATE_PR];
break;
case LV_BTNM_STYLE_BTN_TGL_REL:
style = ext->styles_btn[LV_BTN_STATE_TGL_REL];
break;
case LV_BTNM_STYLE_BTN_TGL_PR:
style = ext->styles_btn[LV_BTN_STATE_TGL_PR];
break;
case LV_BTNM_STYLE_BTN_INA:
style = ext->styles_btn[LV_BTN_STATE_INA];
break;
default:
style = NULL;
break;
}
return style;
}
bool lv_btnm_get_recolor(const lv_obj_t * btnm)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
return ext->recolor;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the button matrixs
* @param btnm pointer to a button matrix object
* @param mask the object will be drawn only in this area
* @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
* (return 'true' if yes)
* LV_DESIGN_DRAW: draw the object (always return 'true')
* LV_DESIGN_DRAW_POST: drawing after every children are drawn
* @param return true/false, depends on 'mode'
*/
static bool lv_btnm_design(lv_obj_t * btnm, const lv_area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
return ancestor_design_f(btnm, mask, mode);
/*Return false if the object is not covers the mask_p area*/
}
/*Draw the object*/
else if(mode == LV_DESIGN_DRAW_MAIN) {
ancestor_design_f(btnm, mask, mode);
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
lv_style_t * bg_style = lv_obj_get_style(btnm);
lv_style_t * btn_style;
lv_opa_t opa_scale = lv_obj_get_opa_scale(btnm);
lv_area_t area_btnm;
lv_obj_get_coords(btnm, &area_btnm);
lv_area_t area_tmp;
lv_coord_t btn_w;
lv_coord_t btn_h;
uint16_t btn_i = 0;
uint16_t txt_i = 0;
lv_style_t style_tmp;
lv_txt_flag_t txt_flag = LV_TXT_FLAG_NONE;
if(ext->recolor) txt_flag = LV_TXT_FLAG_RECOLOR;
for(btn_i = 0; btn_i < ext->btn_cnt; btn_i ++, txt_i ++) {
/*Search the next valid text in the map*/
while(strcmp(ext->map_p[txt_i], "\n") == 0) {
txt_i ++;
}
/*Skip hidden buttons*/
if(button_is_hidden(ext->map_p[txt_i])) continue;
lv_area_copy(&area_tmp, &ext->button_areas[btn_i]);
area_tmp.x1 += area_btnm.x1;
area_tmp.y1 += area_btnm.y1;
area_tmp.x2 += area_btnm.x1;
area_tmp.y2 += area_btnm.y1;
btn_w = lv_area_get_width(&area_tmp);
btn_h = lv_area_get_height(&area_tmp);
/*Load the style*/
if(button_is_inactive(ext->map_p[txt_i])) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_INA);
else if(btn_i != ext->btn_id_pr && btn_i != ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_REL);
else if(btn_i == ext->btn_id_pr && btn_i != ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_PR);
else if(btn_i != ext->btn_id_pr && btn_i == ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_TGL_REL);
else if(btn_i == ext->btn_id_pr && btn_i == ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_TGL_PR);
else btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_REL); /*Not possible option, just to be sure*/
lv_style_copy(&style_tmp, btn_style);
/*Remove borders on the edges if `LV_BORDER_INTERNAL`*/
if(style_tmp.body.border.part & LV_BORDER_INTERNAL) {
if(area_tmp.y1 == btnm->coords.y1 + bg_style->body.padding.ver) {
style_tmp.body.border.part &= ~LV_BORDER_TOP;
}
if(area_tmp.y2 == btnm->coords.y2 - bg_style->body.padding.ver) {
style_tmp.body.border.part &= ~LV_BORDER_BOTTOM;
}
if(txt_i == 0) {
style_tmp.body.border.part &= ~LV_BORDER_LEFT;
}
else if(strcmp(ext->map_p[txt_i - 1],"\n") == 0) {
style_tmp.body.border.part &= ~LV_BORDER_LEFT;
}
if(ext->map_p[txt_i + 1][0] == '\0' || strcmp(ext->map_p[txt_i + 1], "\n") == 0) {
style_tmp.body.border.part &= ~LV_BORDER_RIGHT;
}
}
lv_draw_rect(&area_tmp, mask, &style_tmp, opa_scale);
/*Calculate the size of the text*/
if(btn_style->glass) btn_style = bg_style;
const lv_font_t * font = btn_style->text.font;
lv_point_t txt_size;
lv_txt_get_size(&txt_size, ext->map_p[txt_i], font,
btn_style->text.letter_space, btn_style->text.line_space,
lv_area_get_width(&area_btnm), txt_flag);
area_tmp.x1 += (btn_w - txt_size.x) / 2;
area_tmp.y1 += (btn_h - txt_size.y) / 2;
area_tmp.x2 = area_tmp.x1 + txt_size.x;
area_tmp.y2 = area_tmp.y1 + txt_size.y;
lv_draw_label(&area_tmp, mask, btn_style, opa_scale, ext->map_p[txt_i], txt_flag, NULL);
}
}
return true;
}
/**
* Signal function of the button matrix
* @param btnm pointer to a button matrix 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_btnm_signal(lv_obj_t * btnm, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(btnm, sign, param);
if(res != LV_RES_OK) return res;
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
lv_area_t btnm_area;
lv_area_t btn_area;
lv_point_t p;
if(sign == LV_SIGNAL_CLEANUP) {
lv_mem_free(ext->button_areas);
} else if(sign == LV_SIGNAL_STYLE_CHG || sign == LV_SIGNAL_CORD_CHG) {
lv_btnm_set_map(btnm, ext->map_p);
} else if(sign == LV_SIGNAL_PRESSING) {
uint16_t btn_pr;
/*Search the pressed area*/
lv_indev_get_point(param, &p);
btn_pr = get_button_from_point(btnm, &p);
/*Invalidate to old and the new areas*/;
lv_obj_get_coords(btnm, &btnm_area);
if(btn_pr != ext->btn_id_pr) {
lv_indev_reset_lpr(param);
if(ext->btn_id_pr != LV_BTNM_PR_NONE) {
lv_area_copy(&btn_area, &ext->button_areas[ext->btn_id_pr]);
btn_area.x1 += btnm_area.x1;
btn_area.y1 += btnm_area.y1;
btn_area.x2 += btnm_area.x1;
btn_area.y2 += btnm_area.y1;
lv_inv_area(&btn_area);
}
if(btn_pr != LV_BTNM_PR_NONE) {
lv_area_copy(&btn_area, &ext->button_areas[btn_pr]);
btn_area.x1 += btnm_area.x1;
btn_area.y1 += btnm_area.y1;
btn_area.x2 += btnm_area.x1;
btn_area.y2 += btnm_area.y1;
lv_inv_area(&btn_area);
}
}
ext->btn_id_pr = btn_pr;
}
else if(sign == LV_SIGNAL_LONG_PRESS_REP) {
if(ext->action && ext->btn_id_pr != LV_BTNM_PR_NONE) {
uint16_t txt_i = get_button_text(btnm, ext->btn_id_pr);
if(txt_i != LV_BTNM_PR_NONE) {
if(button_is_repeat_disabled(ext->map_p[txt_i]) == false &&
button_is_inactive(ext->map_p[txt_i]) == false) {
res = ext->action(btnm, cut_ctrl_byte(ext->map_p[txt_i]));
}
}
}
} else if(sign == LV_SIGNAL_RELEASED) {
if(ext->btn_id_pr != LV_BTNM_PR_NONE) {
uint16_t txt_i = get_button_text(btnm, ext->btn_id_pr);
if(button_is_inactive(ext->map_p[txt_i]) == false && txt_i != LV_BTNM_PR_NONE) { /*Ignore the inactive buttons anf click between the buttons*/
if(ext->action) res = ext->action(btnm, cut_ctrl_byte(ext->map_p[txt_i]));
if(res == LV_RES_OK) {
/*Invalidate to old pressed area*/;
lv_obj_get_coords(btnm, &btnm_area);
lv_area_copy(&btn_area, &ext->button_areas[ext->btn_id_pr]);
btn_area.x1 += btnm_area.x1;
btn_area.y1 += btnm_area.y1;
btn_area.x2 += btnm_area.x1;
btn_area.y2 += btnm_area.y1;
lv_inv_area(&btn_area);
if(ext->toggle != 0) {
/*Invalidate to old toggled area*/;
lv_area_copy(&btn_area, &ext->button_areas[ext->btn_id_tgl]);
btn_area.x1 += btnm_area.x1;
btn_area.y1 += btnm_area.y1;
btn_area.x2 += btnm_area.x1;
btn_area.y2 += btnm_area.y1;
lv_inv_area(&btn_area);
ext->btn_id_tgl = ext->btn_id_pr;
}
#if USE_LV_GROUP
/*Leave the clicked button when releases if this not the focused object in a group*/
lv_group_t * g = lv_obj_get_group(btnm);
if(lv_group_get_focused(g) != btnm) {
ext->btn_id_pr = LV_BTNM_PR_NONE;
}
#else
ext->btn_id_pr = LV_BTNM_PR_NONE;
#endif
}
}
}
} else if(sign == LV_SIGNAL_PRESS_LOST || sign == LV_SIGNAL_DEFOCUS) {
ext->btn_id_pr = LV_BTNM_PR_NONE;
lv_obj_invalidate(btnm);
} else if(sign == LV_SIGNAL_FOCUS) {
#if USE_LV_GROUP
lv_indev_t * indev = lv_indev_get_act();
lv_hal_indev_type_t indev_type = lv_indev_get_type(indev);
if(indev_type == LV_INDEV_TYPE_POINTER) {
/*Select the clicked button*/
lv_point_t p1;
lv_indev_get_point(indev, &p1);
uint16_t btn_i = get_button_from_point(btnm, &p1);
ext->btn_id_pr = btn_i;
} else if(indev_type == LV_INDEV_TYPE_ENCODER) {
/*In navigation mode don't select any button but in edit mode select the fist*/
if(lv_group_get_editing(lv_obj_get_group(btnm))) ext->btn_id_pr = 0;
else ext->btn_id_pr = LV_BTNM_PR_NONE;
} else {
ext->btn_id_pr = 0;
}
#else
ext->btn_id_pr = 0;
#endif
lv_obj_invalidate(btnm);
} else if(sign == LV_SIGNAL_CONTROLL) {
char c = *((char *)param);
if(c == LV_GROUP_KEY_RIGHT) {
if(ext->btn_id_pr == LV_BTNM_PR_NONE) ext->btn_id_pr = 0;
else ext->btn_id_pr++;
if(ext->btn_id_pr >= ext->btn_cnt - 1) ext->btn_id_pr = ext->btn_cnt - 1;
lv_obj_invalidate(btnm);
} else if(c == LV_GROUP_KEY_LEFT) {
if(ext->btn_id_pr == LV_BTNM_PR_NONE) ext->btn_id_pr = 0;
if(ext->btn_id_pr > 0) ext->btn_id_pr--;
lv_obj_invalidate(btnm);
} else if(c == LV_GROUP_KEY_DOWN) {
lv_style_t * style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BG);
/*Find the area below the the current*/
if(ext->btn_id_pr == LV_BTNM_PR_NONE) {
ext->btn_id_pr = 0;
} else {
uint16_t area_below;
lv_coord_t pr_center = ext->button_areas[ext->btn_id_pr].x1 + (lv_area_get_width(&ext->button_areas[ext->btn_id_pr]) >> 1);
for(area_below = ext->btn_id_pr; area_below < ext->btn_cnt; area_below ++) {
if(ext->button_areas[area_below].y1 > ext->button_areas[ext->btn_id_pr].y1 &&
pr_center >= ext->button_areas[area_below].x1 &&
pr_center <= ext->button_areas[area_below].x2 + style->body.padding.hor) {
break;
}
}
if(area_below < ext->btn_cnt) ext->btn_id_pr = area_below;
}
lv_obj_invalidate(btnm);
} else if(c == LV_GROUP_KEY_UP) {
lv_style_t * style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BG);
/*Find the area below the the current*/
if(ext->btn_id_pr == LV_BTNM_PR_NONE) {
ext->btn_id_pr = 0;
} else {
int16_t area_above;
lv_coord_t pr_center = ext->button_areas[ext->btn_id_pr].x1 + (lv_area_get_width(&ext->button_areas[ext->btn_id_pr]) >> 1);
for(area_above = ext->btn_id_pr; area_above >= 0; area_above --) {
if(ext->button_areas[area_above].y1 < ext->button_areas[ext->btn_id_pr].y1 &&
pr_center >= ext->button_areas[area_above].x1 - style->body.padding.hor &&
pr_center <= ext->button_areas[area_above].x2) {
break;
}
}
if(area_above >= 0) ext->btn_id_pr = area_above;
}
lv_obj_invalidate(btnm);
} else if(c == LV_GROUP_KEY_ENTER) {
if(ext->action != NULL) {
uint16_t txt_i = get_button_text(btnm, ext->btn_id_pr);
if(txt_i != LV_BTNM_PR_NONE) {
res = ext->action(btnm, cut_ctrl_byte(ext->map_p[txt_i]));
}
}
}
} else if(sign == LV_SIGNAL_GET_EDITABLE) {
bool * editable = (bool *)param;
*editable = true;
} else if(sign == LV_SIGNAL_GET_TYPE) {
lv_obj_type_t * buf = param;
uint8_t i;
for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
if(buf->type[i] == NULL) break;
}
buf->type[i] = "lv_btnm";
}
return res;
}
/**
* Create the required number of buttons according to a map
* @param btnm pointer to button matrix object
* @param map_p pointer to a string array
*/
static void allocate_btn_areas(lv_obj_t * btnm, const char ** map)
{
/*Count the buttons in the map*/
uint16_t btn_cnt = 0;
uint16_t i = 0;
while(strlen(map[i]) != 0) {
if(strcmp(map[i], "\n") != 0) { /*Do not count line breaks*/
btn_cnt ++;
}
i++;
}
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
if(ext->button_areas != NULL) {
lv_mem_free(ext->button_areas);
ext->button_areas = NULL;
}
ext->button_areas = lv_mem_alloc(sizeof(lv_area_t) * btn_cnt);
lv_mem_assert(ext->button_areas);
if(ext->button_areas == NULL) btn_cnt = 0;
ext->btn_cnt = btn_cnt;
}
/**
* Get the width of a button in units. It comes from the first "letter".
* @param btn_str The descriptor string of a button. E.g. "apple" or "\004banana"
* @return the width of the button in units
*/
static uint8_t get_button_width(const char * btn_str)
{
if((btn_str[0] & LV_BTNM_CTRL_MASK) == LV_BTNM_CTRL_CODE) {
return btn_str[0] & LV_BTNM_WIDTH_MASK;
}
return 1; /*Default width is 1*/
}
static bool button_is_hidden(const char * btn_str)
{
/*If control byte presents and hidden bit is '1' then the button is hidden*/
if(((btn_str[0] & LV_BTNM_CTRL_MASK) == LV_BTNM_CTRL_CODE) &&
(btn_str[0] & LV_BTNM_HIDE_MASK)) {
return true;
}
return false;
}
static bool button_is_repeat_disabled(const char * btn_str)
{
/*If control byte presents and hidden bit is '1' then the button is hidden*/
if(((btn_str[0] & LV_BTNM_CTRL_MASK) == LV_BTNM_CTRL_CODE) &&
(btn_str[0] & LV_BTNM_REPEAT_DISABLE_MASK)) {
return true;
}
return false;
}
static bool button_is_inactive(const char * btn_str)
{
/*If control byte presents and hidden bit is '1' then the button is hidden*/
if(((btn_str[0] & LV_BTNM_CTRL_MASK) == LV_BTNM_CTRL_CODE) &&
(btn_str[0] & LV_BTNM_INACTIVE_MASK)) {
return true;
}
return false;
}
const char * cut_ctrl_byte(const char * btn_str)
{
/*Cut the control byte if present*/
if((btn_str[0] & LV_BTNM_CTRL_MASK) == LV_BTNM_CTRL_CODE) return &btn_str[1];
else return btn_str;
}
/**
* Gives the button id of a button under a given point
* @param btnm pointer to a button matrix object
* @param p a point with absolute coordinates
* @return the id of the button or LV_BTNM_PR_NONE.
*/
static uint16_t get_button_from_point(lv_obj_t * btnm, lv_point_t * p)
{
lv_area_t btnm_cords;
lv_area_t btn_area;
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
uint16_t i;
lv_obj_get_coords(btnm, &btnm_cords);
for(i = 0; i < ext->btn_cnt; i++) {
lv_area_copy(&btn_area, &ext->button_areas[i]);
btn_area.x1 += btnm_cords.x1;
btn_area.y1 += btnm_cords.y1;
btn_area.x2 += btnm_cords.x1;
btn_area.y2 += btnm_cords.y1;
if(lv_area_is_point_on(&btn_area, p) != false) {
break;
}
}
if(i == ext->btn_cnt) i = LV_BTNM_PR_NONE;
return i;
}
/**
* Get the text of a button
* @param btnm pointer to a button matrix object
* @param btn_id button id
* @return text id in ext->map_p or LV_BTNM_PR_NONE if 'btn_id' was invalid
*/
static uint16_t get_button_text(lv_obj_t * btnm, uint16_t btn_id)
{
lv_btnm_ext_t * ext = lv_obj_get_ext_attr(btnm);
if(btn_id > ext->btn_cnt) return LV_BTNM_PR_NONE;
uint16_t txt_i = 0;
uint16_t btn_i = 0;
/* Search the text of ext->btn_pr the buttons text in the map
* Skip "\n"-s*/
while(btn_i != btn_id) {
btn_i ++;
txt_i ++;
if(strcmp(ext->map_p[txt_i], "\n") == 0) txt_i ++;
}
if(btn_i == ext->btn_cnt) return LV_BTNM_PR_NONE;
return txt_i;
}
#endif