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lvgl/lv_objx/lv_cb.c
2017-01-06 13:37:25 +01:00

300 lines
8.5 KiB
C

/**
* @file lv_cb.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_conf.h"
#if USE_LV_CB != 0
#include "lv_cb.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_cb_design(lv_obj_t * cb, const area_t * mask, lv_design_mode_t mode);
static void lv_cbs_init(void);
/**********************
* STATIC VARIABLES
**********************/
static lv_cbs_t lv_cbs_def;
static lv_design_f_t ancestor_design_f;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/*-----------------
* Create function
*-----------------*/
/**
* Create a check box objects
* @param par pointer to an object, it will be the parent of the new check box
* @param copy pointer to a check box object, if not NULL then the new object will be copied from it
* @return pointer to the created check box
*/
lv_obj_t * lv_cb_create(lv_obj_t * par, lv_obj_t * copy)
{
/*Create the ancestor basic object*/
lv_obj_t * new_cb = lv_btn_create(par, copy);
dm_assert(new_cb);
lv_cb_ext_t * ext = lv_obj_alloc_ext(new_cb, sizeof(lv_cb_ext_t));
dm_assert(ext);
ext->bullet = NULL;
ext->label = NULL;
if(ancestor_design_f == NULL) ancestor_design_f = lv_obj_get_design_f(new_cb);
lv_obj_set_signal_f(new_cb, lv_cb_signal);
lv_obj_set_design_f(new_cb, lv_cb_design);
/*Init the new checkbox object*/
if(copy == NULL) {
lv_rect_set_layout(new_cb, LV_RECT_LAYOUT_ROW_M);
lv_rect_set_fit(new_cb, true, true);
lv_btn_set_tgl(new_cb, true);
ext->bullet = lv_btn_create(new_cb, NULL);
lv_obj_set_click(ext->bullet, false);
ext->label = lv_label_create(new_cb, NULL);
lv_label_set_text(ext->label, "Check box");
lv_obj_set_style(new_cb, lv_cbs_get(LV_CBS_DEF, NULL));
} else {
lv_cb_ext_t * copy_ext = lv_obj_get_ext(copy);
ext->bullet = lv_btn_create(new_cb, copy_ext->bullet);
ext->label = lv_label_create(new_cb, copy_ext->label);
/*Set the style of 'copy' and isolate it if it is necessary*/
if(lv_obj_get_style_iso(new_cb) == false) {
lv_obj_set_style(new_cb, lv_obj_get_style(copy));
} else {
lv_obj_set_style(new_cb, lv_obj_get_style(copy));
lv_obj_iso_style(new_cb, sizeof(lv_cbs_t));
}
}
lv_obj_align_us(new_cb, NULL, LV_ALIGN_CENTER, 0, 0);
return new_cb;
}
/**
* Signal function of the check box
* @param cb pointer to a check box object
* @param sign a signal type from lv_signal_t enum
* @param param pointer to a signal specific variable
*/
bool lv_cb_signal(lv_obj_t * cb, lv_signal_t sign, void * param)
{
bool valid;
/* Include the ancient signal function */
valid = lv_btn_signal(cb, sign, param);
lv_cb_ext_t * ext = lv_obj_get_ext(cb);
lv_cbs_t * cbs = lv_obj_get_style(cb);
/* 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_PRESSED:
case LV_SIGNAL_RELEASED:
case LV_SIGNAL_LONG_PRESS:
case LV_SIGNAL_PRESS_LOST:
lv_btn_set_state(ext->bullet, lv_btn_get_state(cb));
break;
case LV_SIGNAL_STYLE_CHG:
lv_obj_set_size(ext->bullet, cbs->bullet_size, cbs->bullet_size);
lv_obj_set_style(ext->bullet, &cbs->bullet);
lv_obj_set_style(ext->label, &cbs->label);
break;
case LV_SIGNAL_CLEANUP:
/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
break;
default:
break;
}
}
return valid;
}
/*=====================
* Setter functions
*====================*/
/**
* Set the text of a check box
* @param cb pointer to a check box
* @param txt the text of the check box
*/
void lv_cb_set_text(lv_obj_t * cb, const char * txt)
{
lv_cb_ext_t * ext = lv_obj_get_ext(cb);
lv_label_set_text(ext->label, txt);
}
/*=====================
* Getter functions
*====================*/
/**
* Get the text of a check box
* @param cb pointer to check box object
* @return pointer to the text of the check box
*/
const char * lv_cb_get_text(lv_obj_t * cb)
{
lv_cb_ext_t * ext = lv_obj_get_ext(cb);
return lv_label_get_text(ext->label);
}
/**
* Return with a pointer to a built-in style and/or copy it to a variable
* @param style a style name from lv_cbs_builtin_t enum
* @param copy copy the style to this variable. (NULL if unused)
* @return pointer to an lv_cbs_t style
*/
lv_cbs_t * lv_cbs_get(lv_cbs_builtin_t style, lv_cbs_t * copy)
{
static bool style_inited = false;
/*Make the style initialization if it is not done yet*/
if(style_inited == false) {
lv_cbs_init();
style_inited = true;
}
lv_cbs_t *style_p;
switch(style) {
case LV_CBS_DEF:
style_p = &lv_cbs_def;
break;
default:
style_p = &lv_cbs_def;
}
if(copy != NULL) {
if(style_p != NULL) memcpy(copy, style_p, sizeof(lv_cbs_t));
else memcpy(copy, &lv_cbs_def, sizeof(lv_cbs_t));
}
return style_p;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the check boxes
* @param cb 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')
* LV_DESIGN_DRAW_POST: drawing after every children are drawn
* @param return true/false, depends on 'mode'
*/
static bool lv_cb_design(lv_obj_t * cb, const area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
/*Return false if the object is not covers the mask_p area*/
return ancestor_design_f(cb, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN || mode == LV_DESIGN_DRAW_POST) {
lv_cb_ext_t * cb_ext = lv_obj_get_ext(cb);
lv_btn_ext_t * bullet_ext = lv_obj_get_ext(cb_ext->bullet);
/*Be sure he state of the bullet is the same as the parent button*/
bullet_ext->state = cb_ext->bg_btn.state;
return ancestor_design_f(cb, mask, mode);
}
/*Draw the object*/
return true;
}
/**
* Initialize the rectangle styles
*/
static void lv_cbs_init(void)
{
/*Default style*/
/*Bg style*/
lv_btns_get(LV_RECTS_TRANSP, &lv_cbs_def.bg);
lv_cbs_def.bg.rects.hpad = 6 * LV_DOWNSCALE;
lv_cbs_def.bg.rects.vpad = 6 * LV_DOWNSCALE;
lv_cbs_def.bg.rects.opad = 5 * LV_DOWNSCALE;
/*Bullet style*/
lv_btns_get(LV_BTNS_DEF, &lv_cbs_def.bullet);
lv_cbs_def.bullet.mcolor[LV_BTN_STATE_REL] = COLOR_WHITE;
lv_cbs_def.bullet.gcolor[LV_BTN_STATE_REL] = COLOR_SILVER;
lv_cbs_def.bullet.bcolor[LV_BTN_STATE_REL] = COLOR_BLACK;
lv_cbs_def.bullet.flags[LV_BTN_STATE_REL].light_en = 0;
lv_cbs_def.bullet.mcolor[LV_BTN_STATE_PR] = COLOR_SILVER;
lv_cbs_def.bullet.gcolor[LV_BTN_STATE_PR] = COLOR_GRAY;
lv_cbs_def.bullet.bcolor[LV_BTN_STATE_PR] = COLOR_BLACK;
lv_cbs_def.bullet.flags[LV_BTN_STATE_PR].light_en = 0;
lv_cbs_def.bullet.mcolor[LV_BTN_STATE_TGL_REL] = COLOR_MAKE(0x20, 0x30, 0x40);
lv_cbs_def.bullet.gcolor[LV_BTN_STATE_TGL_REL] = COLOR_MAKE(0x10, 0x20, 0x30);
lv_cbs_def.bullet.bcolor[LV_BTN_STATE_TGL_REL] = COLOR_WHITE;
lv_cbs_def.bullet.flags[LV_BTN_STATE_TGL_REL].light_en = 1;
lv_cbs_def.bullet.mcolor[LV_BTN_STATE_TGL_PR] = COLOR_MAKE(0x50, 0x70, 0x90);
lv_cbs_def.bullet.gcolor[LV_BTN_STATE_TGL_PR] = COLOR_MAKE(0x20, 0x30, 0x40);
lv_cbs_def.bullet.bcolor[LV_BTN_STATE_TGL_PR] = COLOR_WHITE;
lv_cbs_def.bullet.flags[LV_BTN_STATE_TGL_PR].light_en = 1;
lv_cbs_def.bullet.mcolor[LV_BTN_STATE_INA] = COLOR_SILVER;
lv_cbs_def.bullet.gcolor[LV_BTN_STATE_INA] = COLOR_GRAY;
lv_cbs_def.bullet.bcolor[LV_BTN_STATE_INA] = COLOR_WHITE;
lv_cbs_def.bullet.flags[LV_BTN_STATE_INA].light_en = 0;
lv_cbs_def.bullet.rects.bwidth = 2 * LV_DOWNSCALE;
lv_cbs_def.bullet.rects.bopa = 70;
lv_cbs_def.bullet.rects.light = 6 * LV_DOWNSCALE;
lv_cbs_def.bullet.rects.empty = 0;
lv_cbs_def.bullet.rects.round = LV_OBJ_DEF_WIDTH / 3 / 4;
lv_cbs_def.bullet.rects.hpad = 0 * LV_DOWNSCALE;
lv_cbs_def.bullet.rects.vpad = 0 * LV_DOWNSCALE;
lv_cbs_def.bullet.rects.opad = 0 * LV_DOWNSCALE;
/*Label*/
lv_labels_get(LV_LABELS_TXT, &lv_cbs_def.label);
lv_cbs_def.label.objs.color = COLOR_MAKE(0x10, 0x18, 0x20);
/*Others*/
lv_cbs_def.bullet_size = LV_OBJ_DEF_WIDTH / 3;
}
#endif