hekate/nyx/nyx_gui/libs/lvgl/lv_objx/lv_imgbtn.c

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/**
* @file lv_imgbtn.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_imgbtn.h"
#if USE_LV_IMGBTN != 0
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_imgbtn_design(lv_obj_t * imgbtn, const lv_area_t * mask, lv_design_mode_t mode);
static lv_res_t lv_imgbtn_signal(lv_obj_t * imgbtn, lv_signal_t sign, void * param);
static void refr_img(lv_obj_t * imgbtn);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_func_t ancestor_signal;
static lv_design_func_t ancestor_design;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a image button object
* @param par pointer to an object, it will be the parent of the new image button
* @param copy pointer to a image button object, if not NULL then the new object will be copied from it
* @return pointer to the created image button
*/
lv_obj_t * lv_imgbtn_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("image button create started");
/*Create the ancestor of image button*/
lv_obj_t * new_imgbtn = lv_btn_create(par, copy);
lv_mem_assert(new_imgbtn);
if(new_imgbtn == NULL) return NULL;
/*Allocate the image button type specific extended data*/
lv_imgbtn_ext_t * ext = lv_obj_allocate_ext_attr(new_imgbtn, sizeof(lv_imgbtn_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_imgbtn);
if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_imgbtn);
/*Initialize the allocated 'ext' */
#if LV_IMGBTN_TILED == 0
memset(ext->img_src, 0, sizeof(ext->img_src));
#else
memset(ext->img_src_left, 0, sizeof(ext->img_src_left));
memset(ext->img_src_mid, 0, sizeof(ext->img_src_mid));
memset(ext->img_src_right, 0, sizeof(ext->img_src_right));
#endif
ext->act_cf = LV_IMG_CF_UNKOWN;
/*The signal and design functions are not copied so set them here*/
lv_obj_set_signal_func(new_imgbtn, lv_imgbtn_signal);
lv_obj_set_design_func(new_imgbtn, lv_imgbtn_design);
/*Init the new image button image button*/
if(copy == NULL) {
}
/*Copy an existing image button*/
else {
lv_imgbtn_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
#if LV_IMGBTN_TILED == 0
memcpy(ext->img_src, copy_ext->img_src, sizeof(ext->img_src));
#else
memcpy(ext->img_src_left, copy_ext->img_src_left, sizeof(ext->img_src_left));
memcpy(ext->img_src_mid, copy_ext->img_src_mid, sizeof(ext->img_src_mid));
memcpy(ext->img_src_right, copy_ext->img_src_right, sizeof(ext->img_src_right));
#endif
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_imgbtn);
}
LV_LOG_INFO("image button created");
return new_imgbtn;
}
/*=====================
* Setter functions
*====================*/
#if LV_IMGBTN_TILED == 0
/**
* Set images for a state of the image button
* @param imgbtn pointer to an image button object
* @param state for which state set the new image (from `lv_btn_state_t`) `
* @param src pointer to an image source (a C array or path to a file)
*/
void lv_imgbtn_set_src(lv_obj_t * imgbtn, lv_btn_state_t state, const void * src)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
ext->img_src[state] = src;
refr_img(imgbtn);
}
#else
/**
* Set images for a state of the image button
* @param imgbtn pointer to an image button object
* @param state for which state set the new image (from `lv_btn_state_t`) `
* @param src_left pointer to an image source for the left side of the button (a C array or path to a file)
* @param src_mid pointer to an image source for the middle of the button (ideally 1px wide) (a C array or path to a file)
* @param src_right pointer to an image source for the right side of the button (a C array or path to a file)
*/
void lv_imgbtn_set_src(lv_obj_t * imgbtn, lv_btn_state_t state, const void * src_left, const void * src_mid, const void * src_right)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
ext->img_src_left[state] = src_left;
ext->img_src_mid[state] = src_mid;
ext->img_src_right[state] = src_right;
refr_img(imgbtn);
}
#endif
/**
* Set a style of a image button.
* @param imgbtn pointer to image button object
* @param type which style should be set
* @param style pointer to a style
*/
void lv_imgbtn_set_style(lv_obj_t * imgbtn, lv_imgbtn_style_t type, lv_style_t * style)
{
lv_btn_set_style(imgbtn, type, style);
}
/*=====================
* Getter functions
*====================*/
#if LV_IMGBTN_TILED == 0
/**
* Get the images in a given state
* @param imgbtn pointer to an image button object
* @param state the state where to get the image (from `lv_btn_state_t`) `
* @return pointer to an image source (a C array or path to a file)
*/
const void * lv_imgbtn_get_src(lv_obj_t * imgbtn, lv_btn_state_t state)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
return ext->img_src[state];
}
#else
/**
* Get the left image in a given state
* @param imgbtn pointer to an image button object
* @param state the state where to get the image (from `lv_btn_state_t`) `
* @return pointer to the left image source (a C array or path to a file)
*/
const void * lv_imgbtn_get_src_left(lv_obj_t * imgbtn, lv_btn_state_t state)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
return ext->img_src_left[state];
}
/**
* Get the middle image in a given state
* @param imgbtn pointer to an image button object
* @param state the state where to get the image (from `lv_btn_state_t`) `
* @return pointer to the middle image source (a C array or path to a file)
*/
const void * lv_imgbtn_get_src_middle(lv_obj_t * imgbtn, lv_btn_state_t state)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
return ext->img_src_mid[state];
}
/**
* Get the right image in a given state
* @param imgbtn pointer to an image button object
* @param state the state where to get the image (from `lv_btn_state_t`) `
* @return pointer to the left image source (a C array or path to a file)
*/
const void * lv_imgbtn_get_src_right(lv_obj_t * imgbtn, lv_btn_state_t state)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
return ext->img_src_right[state];
}
#endif
/**
* Get style of a image button.
* @param imgbtn pointer to image button object
* @param type which style should be get
* @return style pointer to the style
*/
lv_style_t * lv_imgbtn_get_style(const lv_obj_t * imgbtn, lv_imgbtn_style_t type)
{
return lv_btn_get_style(imgbtn, type);
}
/*=====================
* Other functions
*====================*/
/*
* New object specific "other" functions come here
*/
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the image buttons
* @param imgbtn 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_imgbtn_design(lv_obj_t * imgbtn, const lv_area_t * mask, lv_design_mode_t mode)
{
/*Return false if the object is not covers the mask_p area*/
if(mode == LV_DESIGN_COVER_CHK) {
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
bool cover = false;
if(ext->act_cf == LV_IMG_CF_TRUE_COLOR || ext->act_cf == LV_IMG_CF_RAW) {
cover = lv_area_is_in(mask, &imgbtn->coords);
}
return cover;
}
/*Draw the object*/
else if(mode == LV_DESIGN_DRAW_MAIN) {
/*Just draw an image*/
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
lv_btn_state_t state = lv_imgbtn_get_state(imgbtn);
lv_style_t * style = lv_imgbtn_get_style(imgbtn, state);
lv_opa_t opa_scale = lv_obj_get_opa_scale(imgbtn);
#if LV_IMGBTN_TILED == 0
const void * src = ext->img_src[state];
lv_draw_img(&imgbtn->coords, mask, src, style, opa_scale);
#else
const void * src;
lv_img_header_t header;
lv_area_t coords;
lv_coord_t left_w = 0;
lv_coord_t right_w = 0;
src = ext->img_src_left[state];
if(src) {
lv_img_dsc_get_info(src, &header);
left_w = header.w;
coords.x1 = imgbtn->coords.x1;
coords.y1 = imgbtn->coords.y1;
coords.x2 = coords.x1 + header.w - 1;
coords.y2 = coords.y1 + header.h - 1;
lv_draw_img(&coords, mask, src, style, opa_scale);
}
src = ext->img_src_right[state];
if(src) {
lv_img_dsc_get_info(src, &header);
right_w = header.w;
coords.x1 = imgbtn->coords.x2 - header.w + 1;
coords.y1 = imgbtn->coords.y1;
coords.x2 = imgbtn->coords.x2;
coords.y2 = imgbtn->coords.y1 + header.h - 1;
lv_draw_img(&coords, mask, src, style, opa_scale);
}
src = ext->img_src_mid[state];
if(src) {
lv_coord_t obj_w = lv_obj_get_width(imgbtn);
lv_coord_t i;
lv_img_dsc_get_info(src, &header);
coords.x1 = imgbtn->coords.x1 + left_w ;
coords.y1 = imgbtn->coords.y1;
coords.x2 = coords.x1 + header.w - 1;
coords.y2 = imgbtn->coords.y1 + header.h - 1;
for(i = 0; i < obj_w - right_w - left_w; i += header.w) {
lv_draw_img(&coords, mask, src, style, opa_scale);
coords.x1 = coords.x2 + 1;
coords.x2 += header.w;
}
}
#endif
}
/*Post draw when the children are drawn*/
else if(mode == LV_DESIGN_DRAW_POST) {
}
return true;
}
/**
* Signal function of the image button
* @param imgbtn pointer to a image button 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_imgbtn_signal(lv_obj_t * imgbtn, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(imgbtn, sign, param);
if(res != LV_RES_OK) return res;
if(sign == LV_SIGNAL_STYLE_CHG) {
/* If the style changed then the button was clicked, released etc. so probably the state was changed as well
* Set the new image for the new state.*/
refr_img(imgbtn);
} else if(sign == LV_SIGNAL_CLEANUP) {
/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
} 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_imgbtn";
}
return res;
}
static void refr_img(lv_obj_t * imgbtn)
{
lv_imgbtn_ext_t * ext = lv_obj_get_ext_attr(imgbtn);
lv_btn_state_t state = lv_imgbtn_get_state(imgbtn);
lv_img_header_t header;
#if LV_IMGBTN_TILED == 0
const void * src = ext->img_src[state];
#else
const void * src = ext->img_src_mid[state];
#endif
lv_res_t info_res;
info_res = lv_img_dsc_get_info(src, &header);
if(info_res == LV_RES_OK) {
ext->act_cf = header.cf;
#if LV_IMGBTN_TILED == 0
lv_obj_set_size(imgbtn, header.w, header.h);
#else
lv_obj_set_height(imgbtn, header.h);
#endif
} else {
ext->act_cf = LV_IMG_CF_UNKOWN;
}
lv_obj_invalidate(imgbtn);
}
#endif