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