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lvgl/lv_objx/lv_btnm.c
Gabor 6e4993371e BUtton matrix added
2016-09-30 13:35:54 +02:00

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/**
* @file lv_btnm.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_conf.h"
#if USE_LV_BTNM != 0
#include "lv_btnm.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
#if 0 /*Not necessary*/
static bool lv_btnm_design(lv_obj_t* obj_dp, const area_t * mask_p, lv_design_mode_t mode);
#endif
static uint8_t lv_btnm_get_width_unit(const char * btn_str);
static void lv_btnm_create_btns(lv_obj_t * obj_dp, const char ** map_p);
static bool lv_btnm_btn_release_action(lv_obj_t * obj_dp, lv_dispi_t * dispi_p);
/**********************
* STATIC VARIABLES
**********************/
static lv_btnms_t lv_btnms_def =
{
/*Background rectangle style*/
.rects.objs.color = COLOR_MAKE(0x50, 0x70, 0x90), .rects.gcolor = COLOR_MAKE(0x70, 0xA0, 0xC0),
.rects.bcolor = COLOR_WHITE, .rects.bwidth = 2 * LV_STYLE_MULT, .rects.bopa = 50,
.rects.round = 4 * LV_STYLE_MULT, .rects.empty = 0,
.rects.hpad = 5 * LV_STYLE_MULT, .rects.vpad = 5 * LV_STYLE_MULT, .rects.opad = 5 * LV_STYLE_MULT,
/*Button style*/
.btns.mcolor[LV_BTN_STATE_REL] = COLOR_MAKE(0x40, 0x60, 0x80),
.btns.gcolor[LV_BTN_STATE_REL] = COLOR_BLACK,
.btns.bcolor[LV_BTN_STATE_REL] = COLOR_WHITE,
.btns.mcolor[LV_BTN_STATE_PR] = COLOR_MAKE(0x60, 0x80, 0xa0),
.btns.gcolor[LV_BTN_STATE_PR] = COLOR_MAKE(0x20, 0x30, 0x40),
.btns.bcolor[LV_BTN_STATE_PR] = COLOR_WHITE,
.btns.mcolor[LV_BTN_STATE_TGL_REL] = COLOR_MAKE(0x80,0x00,0x00),
.btns.gcolor[LV_BTN_STATE_TGL_REL] = COLOR_MAKE(0x20, 0x20, 0x20),
.btns.bcolor[LV_BTN_STATE_TGL_REL] = COLOR_WHITE,
.btns.mcolor[LV_BTN_STATE_TGL_PR] = COLOR_MAKE(0xf0, 0x26, 0x26),
.btns.gcolor[LV_BTN_STATE_TGL_PR] = COLOR_MAKE(0x40, 0x40, 0x40),
.btns.bcolor[LV_BTN_STATE_TGL_PR] = COLOR_WHITE,
.btns.mcolor[LV_BTN_STATE_INA] = COLOR_SILVER,
.btns.gcolor[LV_BTN_STATE_INA] = COLOR_GRAY,
.btns.bcolor[LV_BTN_STATE_INA] = COLOR_WHITE,
.btns.rects.bwidth = 2 * LV_STYLE_MULT, .btns.rects.bopa = 50,
.btns.rects.empty = 0, .btns.rects.round = 4 * LV_STYLE_MULT,
.btns.rects.hpad = 10 * LV_STYLE_MULT,
.btns.rects.vpad = 15 * LV_STYLE_MULT,
.btns.rects.opad = 3 * LV_STYLE_MULT,
/*Label style*/
.labels.font = LV_FONT_DEFAULT, .labels.objs.color = COLOR_MAKE(0xd0, 0xe0, 0xf0),
.labels.letter_space = 2 * LV_STYLE_MULT, .labels.line_space = 2 * LV_STYLE_MULT,
.labels.mid = 1,
};
static const char * lv_btnm_def_map[] = {"Btn1","Btn2", "Btn3","\n",
"\002Btn4","Btn5", ""};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/*-----------------
* Create function
*-----------------*/
/**
* Create a button matrix objects
* @param par_dp pointer to an object, it will be the parent of the new button matrix
* @param copy_dp 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_dp, lv_obj_t * copy_dp)
{
/*Create the ancestor object*/
lv_obj_t* new_obj_dp = lv_rect_create(par_dp, copy_dp);
dm_assert(new_obj_dp);
/*Allocate the object type specific extended data*/
lv_btnm_ext_t * ext_dp = lv_obj_alloc_ext(new_obj_dp, sizeof(lv_btnm_ext_t));
dm_assert(ext_dp);
lv_obj_set_signal_f(new_obj_dp, lv_btnm_signal);
/* Keep the rectangle design function
* lv_obj_set_design_f(new_obj_dp, lv_btnm_design); */
/*Init the new button matrix object*/
if(copy_dp == NULL) {
lv_obj_set_size(new_obj_dp, LV_HOR_RES / 2, LV_VER_RES / 2);
lv_obj_set_style(new_obj_dp, &lv_btnms_def);
lv_btnm_set_map(new_obj_dp, lv_btnm_def_map);
}
/*Copy an existing object*/
else {
}
return new_obj_dp;
}
/**
* Signal function of the button matrix
* @param obj_dp 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 true: the object is still valid (not deleted), false: the object become invalid
*/
bool lv_btnm_signal(lv_obj_t* obj_dp, lv_signal_t sign, void * param)
{
bool valid;
/* Include the ancient signal function */
valid = lv_rect_signal(obj_dp, sign, param);
/* The object can be deleted so check its validity and then
* make the object specific signal handling */
if(valid != false) {
switch(sign) {
case LV_SIGNAL_CLEANUP:
/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
break;
case LV_SIGNAL_STYLE_CHG:
case LV_SIGNAL_CORD_CHG:
lv_btnm_set_map(obj_dp, LV_EA(obj_dp, lv_btnm_ext_t)->map_p);
break;
default:
break;
}
}
return valid;
}
/*=====================
* Setter functions
*====================*/
/**
* Set a new map. Buttons will be created/deleted according to the map.
* @param obj_dp pointer to a button matrix object
* @param map_p pointer a string array. Tha last string hast be: "".
* Use "\n" to begin a new line.
* Use "\003" octal numbers to set relative
* the width of a button. (max. 9 -> \011)
* (e.g. const char * str[] = {"a", "b", "\n", "\004c", "d", ""}).
*/
void lv_btnm_set_map(lv_obj_t * obj_dp, const char ** map_p)
{
if(map_p == NULL) return;
LV_EA(obj_dp, lv_btnm_ext_t)->map_p = map_p;
/*Analyze the map and create the required number of buttons*/
lv_btnm_create_btns(obj_dp, map_p);
/*Set size and positions of the buttons*/
lv_btnms_t * btnms_p = lv_obj_get_style(obj_dp);
cord_t max_w = lv_obj_get_width(obj_dp) - 2 * btnms_p->rects.hpad;
cord_t max_h = lv_obj_get_height(obj_dp) - 2 * btnms_p->rects.vpad;
cord_t act_y = btnms_p->rects.vpad;
uint8_t btn_cnt_tot = 0; /*Used to set free number of the buttons*/
/*Count the lines to calculate button height*/
uint8_t line_cnt = 1;
uint8_t li;
for(li = 0; strlen(map_p[li]) != 0; li++) {
if(strcmp(map_p[li], "\n") == 0) line_cnt ++;
}
cord_t btn_h = max_h - ((line_cnt - 1) * btnms_p->rects.opad);
btn_h = btn_h / line_cnt;
/* Count the units and the buttons in a line
* (A button can be 1,2,3... unit wide)*/
uint16_t unit_cnt;
uint16_t btn_cnt;
const char ** map_p_tmp = map_p;
lv_obj_t * btn_dp;
btn_dp = ll_get_head(&obj_dp->child_ll);
/*Count the units and the buttons in a line*/
while(1) {
unit_cnt = 0;
btn_cnt = 0;
while(strcmp(map_p_tmp[btn_cnt], "\n") != 0 &&
strlen(map_p_tmp[btn_cnt]) != 0) { /*Check a line*/
unit_cnt += lv_btnm_get_width_unit(map_p_tmp[btn_cnt]);
btn_cnt ++;
}
/*Only deal with the non empty lines*/
if(btn_cnt != 0) {
/*Calculate the unit width*/
cord_t unit_w = max_w - ((btn_cnt-1) * btnms_p->rects.opad);
unit_w = unit_w / unit_cnt;
/*Set the button size and positions and set the texts*/
uint16_t i;
lv_obj_t * label_dp;
cord_t act_x = btnms_p->rects.hpad;
for(i = 0; i < btn_cnt; i++) {
lv_obj_set_size(btn_dp, unit_w * lv_btnm_get_width_unit(map_p_tmp[i]), btn_h);
lv_obj_align(btn_dp, NULL, LV_ALIGN_IN_TOP_LEFT, act_x, act_y);
lv_obj_set_free_num(btn_dp, btn_cnt_tot);
lv_obj_set_style(btn_dp, &btnms_p->btns);
act_x += lv_obj_get_width(btn_dp) + btnms_p->rects.opad;
label_dp = lv_obj_get_child(btn_dp, NULL); /*Get the label on the button (the only child)*/
lv_obj_set_style(label_dp, &btnms_p->labels);
lv_label_set_text(label_dp, map_p_tmp[i]);
btn_dp = ll_get_next(&obj_dp->child_ll, btn_dp); /*Go to the next button*/
btn_cnt_tot ++;
}
}
act_y += btn_h + btnms_p->rects.opad;
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*/
}
}
/**
* Set a new callback function for the buttons (It will be called when a button is released)
* @param obj_dp: pointer to button matrix object
* @param cb pointer to a callback function
*/
void lv_btnm_set_cb(lv_obj_t * obj_dp, lv_btnm_callback_t cb)
{
LV_EA(obj_dp, lv_btnm_ext_t)->cb = cb;
}
/*=====================
* Getter functions
*====================*/
/**
* Return with a pointer to a built-in style and/or copy it to a variable
* @param style a style name from lv_btnms_builtin_t enum
* @param copy_p copy the style to this variable. (NULL if unused)
* @return pointer to an lv_btnms_t style
*/
lv_btnms_t * lv_btnms_get(lv_btnms_builtin_t style, lv_btnms_t * copy_p)
{
lv_btnms_t *style_p;
switch(style) {
case LV_BTNMS_DEF:
style_p = &lv_btnms_def;
break;
default:
style_p = &lv_btnms_def;
}
if(copy_p != NULL) {
if(style_p != NULL) memcpy(copy_p, style_p, sizeof(lv_btnms_t));
else memcpy(copy_p, &lv_btnms_def, sizeof(lv_btnms_t));
}
return style_p;
}
/**
* Get the current map of a button matrix
* @param obj_dp pointer to a button matrix object
* @return the current map
*/
const char ** lv_btnm_get_map(lv_obj_t * obj_dp)
{
return LV_EA(obj_dp, lv_btnm_ext_t)->map_p;
}
/**
* Get a the callback function of the buttons on a button matrix
* @param obj_dp: pointer to button matrix object
* @return pointer to the callback function
*/
lv_btnm_callback_t lv_btnm_get_cb(lv_obj_t * obj_dp)
{
return LV_EA(obj_dp, lv_btnm_ext_t)->cb;
}
/**********************
* STATIC FUNCTIONS
**********************/
#if 0 /*Not necessary*/
/**
* Handle the drawing related tasks of the button matrixs
* @param obj_dp pointer to an 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')
* @param return true/false, depends on 'mode'
*/
static bool lv_btnm_design(lv_obj_t* obj_dp, const area_t * mask_p, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
/*Return false if the object is not covers the mask_p area*/
return false;
}
/*Draw the object*/
return true;
}
#endif
/**
* Create the required number of buttons according to a map
* @param obj_dp pointer to button matrix object
* @param map_p pointer to a string array
*/
static void lv_btnm_create_btns(lv_obj_t * obj_dp, const char ** map_p)
{
/*Count the buttons in the map*/
uint16_t btn_cnt = 0;
uint16_t i = 0;
while(strlen(map_p[i]) != 0) {
if(strcmp(map_p[i], "\n") != 0) { /*Not count line breaks*/
btn_cnt ++;
}
i++;
}
/*Get the current number of children of the button matrix*/
uint16_t child_cnt = 0;
lv_obj_t * child_dp = NULL;
while(1) {
child_dp = lv_obj_get_child(obj_dp, child_dp);
if(child_dp != NULL) child_cnt ++;
else break;
}
/*Create or delete buttons to finally get 'btn_cnt' children*/
if(child_cnt < btn_cnt) { /*Create buttons*/
for(i = 0; i < btn_cnt - child_cnt; i++) {
lv_obj_t * btn_dp = lv_btn_create(obj_dp, NULL);
lv_btn_set_rel_action(btn_dp, lv_btnm_btn_release_action);
lv_label_create(btn_dp, NULL);
}
} else if(child_cnt > btn_cnt) { /*Delete buttons*/
for(i = 0; i < child_cnt - btn_cnt; i++) {
lv_obj_del(lv_obj_get_child(obj_dp, NULL));
}
}
}
/**
* 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 lv_btnm_get_width_unit(const char * btn_str)
{
if(btn_str[0] <= '\011') return btn_str[0];
return 1;
}
/**
* Called when button is released
* @param obj_dp pointer to the released button
* @param dispi_p pointer to the caller display input.
* @return true: if the button remains valid (the button matrix or the button is not deleted)
*/
static bool lv_btnm_btn_release_action(lv_obj_t * obj_dp, lv_dispi_t * dispi_p)
{
lv_obj_t * btnm_dp = lv_obj_get_parent(obj_dp);
lv_btnm_ext_t * ext_dp = lv_obj_get_ext(btnm_dp);
uint8_t id = lv_obj_get_free_num(obj_dp);
bool ret;
if(ext_dp->cb != NULL) {
ret = ext_dp->cb(btnm_dp, obj_dp, id); /*Call the set callback function*/
}
return ret;
}
#endif
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