add lv_preload.c/h
This commit is contained in:
Gabor Kiss-Vamosi
270
lv_objx/lv_preload.c
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270
lv_objx/lv_preload.c
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/**
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* @file lv_preload.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_conf.h"
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#if USE_LV_PRELOAD != 0
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#include "lv_preload.h"
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#include "../lv_misc/lv_math.h"
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#include "../lv_draw/lv_draw_rect.h"
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#include "../lv_draw/lv_draw_arc.h"
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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_preload_design(lv_obj_t * preload, const lv_area_t * mask, lv_design_mode_t mode);
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static lv_res_t lv_preload_signal(lv_obj_t * preload, lv_signal_t sign, void * param);
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static void preload_spin(void * ptr, int32_t val);
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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 pre loader object
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* @param par pointer to an object, it will be the parent of the new pre loader
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* @param copy pointer to a pre loader object, if not NULL then the new object will be copied from it
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* @return pointer to the created pre loader
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*/
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lv_obj_t * lv_preload_create(lv_obj_t * par, lv_obj_t * copy)
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{
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/*Create the ancestor of pre loader*/
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lv_obj_t * new_preload = lv_arc_create(par, copy);
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lv_mem_assert(new_preload);
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/*Allocate the pre loader type specific extended data*/
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lv_preload_ext_t * ext = lv_obj_allocate_ext_attr(new_preload, sizeof(lv_preload_ext_t));
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lv_mem_assert(ext);
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if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_preload);
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if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_preload);
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/*Initialize the allocated 'ext' */
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ext->type = LV_PRELOAD_TYPE_SPINNING_ARC;
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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_preload, lv_preload_signal);
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lv_obj_set_design_func(new_preload, lv_preload_design);
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lv_anim_t a;
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a.var = new_preload;
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a.start = 0;
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a.end = 360;
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a.fp = (lv_anim_fp_t)preload_spin;
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a.path = lv_anim_path_momentum;
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a.end_cb = NULL;
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a.act_time = 0;
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a.time = 1000;
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a.playback = 0;
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a.playback_pause = 0;
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a.repeat = 1;
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a.repeat_pause = 0;
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lv_anim_create(&a);
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/*Init the new pre loader pre loader*/
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if(copy == NULL) {
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lv_obj_set_style(new_preload, &lv_style_pretty_color);
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}
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/*Copy an existing pre loader*/
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else {
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lv_preload_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
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ext->type = copy_ext->type;
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/*Refresh the style with new signal function*/
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lv_obj_refresh_style(new_preload);
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}
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return new_preload;
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}
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/*======================
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* Add/remove functions
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*=====================*/
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/*
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* New object specific "add" or "remove" functions come here
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*/
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/*=====================
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* Setter functions
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*====================*/
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/*
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* New object specific "set" functions come here
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*/
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/**
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* Set a style of a pre loader.
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* @param preload pointer to pre loader 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_preload_set_style(lv_obj_t * preload, lv_preload_style_t type, lv_style_t *style)
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{
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lv_preload_ext_t *ext = lv_obj_get_ext_attr(preload);
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switch (type) {
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case LV_PRELOAD_STYLE_MAIN:
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lv_arc_set_style(preload, LV_ARC_STYLE_MAIN, style);
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break;
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}
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}
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/*=====================
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* Getter functions
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*====================*/
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/*
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* New object specific "get" functions come here
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*/
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/**
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* Get style of a pre loader.
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* @param preload pointer to pre loader 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_preload_get_style(lv_obj_t * preload, lv_preload_style_t type)
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{
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lv_preload_ext_t *ext = lv_obj_get_ext_attr(preload);
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switch (type) {
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case LV_PRELOAD_STYLE_MAIN: return lv_arc_get_style(preload, LV_ARC_STYLE_MAIN);
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default: return NULL;
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}
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/*To avoid warning*/
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return NULL;
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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 pre loaders
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* @param preload 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_preload_design(lv_obj_t * preload, 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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return false;
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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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lv_preload_ext_t * ext = lv_obj_get_ext_attr(preload);
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lv_style_t * style = lv_arc_get_style(preload, LV_ARC_STYLE_MAIN);
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lv_coord_t r = (LV_MATH_MIN(lv_obj_get_width(preload), lv_obj_get_height(preload))) / 2;
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lv_coord_t x = preload->coords.x1 + lv_obj_get_width(preload) / 2;
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lv_coord_t y = preload->coords.y1 + lv_obj_get_height(preload) / 2;
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lv_style_t bg_style;
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lv_style_copy(&bg_style, &lv_style_plain);
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bg_style.body.empty = 1;
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bg_style.body.radius = LV_RADIUS_CIRCLE;
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bg_style.body.border.color = style->body.aux_color;
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bg_style.body.border.width = style->body.thickness;
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lv_area_t bg_area;
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bg_area.x1 = x - r;
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bg_area.y1 = y - r;
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bg_area.x2 = x + r;
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bg_area.y2 = y + r;
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lv_draw_rect(&bg_area, mask, &bg_style);
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lv_draw_arc(x, y, r, mask, ext->arc.angle_start, ext->arc.angle_end, style);
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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 pre loader
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* @param preload pointer to a pre loader 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_preload_signal(lv_obj_t * preload, 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(preload, sign, param);
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if(res != LV_RES_OK) return res;
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if(sign == LV_SIGNAL_CLEANUP) {
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/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
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}
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else if(sign == LV_SIGNAL_GET_TYPE) {
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lv_obj_type_t * buf = param;
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uint8_t i;
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for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
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if(buf->type[i] == NULL) break;
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}
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buf->type[i] = "lv_preload";
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}
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return res;
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}
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static void preload_spin(void * ptr, int32_t val)
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{
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lv_obj_t * preload = ptr;
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uint16_t angle_start = val + 15;
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uint16_t angle_end = angle_start + 60;
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angle_start = angle_start % 360;
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angle_end = angle_end % 360;
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lv_arc_set_angles(preload, angle_start, angle_end);
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}
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#endif
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113
lv_objx/lv_preload.h
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113
lv_objx/lv_preload.h
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@@ -0,0 +1,113 @@
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/**
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* @file lv_preload.h
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*
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*/
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/* TODO Remove these instructions
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* Search an replace: pre loader -> object normal name with lower case (e.g. button, label etc.)
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* preload -> object short name with lower case(e.g. btn, label etc)
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* PRELOAD -> object short name with upper case (e.g. BTN, LABEL etc.)
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*
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*/
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#ifndef LV_PRELOAD_H
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#define LV_PRELOAD_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../../lv_conf.h"
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#if USE_LV_PRELOAD != 0
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#include "../lv_core/lv_obj.h"
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#include "lv_arc.h"
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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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typedef enum {
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LV_PRELOAD_TYPE_SPINNING_ARC,
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}lv_preloader_type_t;
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/*Data of pre loader*/
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typedef struct {
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lv_arc_ext_t arc; /*Ext. of ancestor*/
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/*New data for this type */
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lv_preloader_type_t type;
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uint16_t indic_length; /*Length of the spinning indicator in degree*/
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uint16_t time; /*Time of one round*/
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}lv_preload_ext_t;
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/*Styles*/
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typedef enum {
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LV_PRELOAD_STYLE_MAIN,
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}lv_preload_style_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Create a pre loader objects
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* @param par pointer to an object, it will be the parent of the new pre loader
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* @param copy pointer to a pre loader object, if not NULL then the new object will be copied from it
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* @return pointer to the created pre loader
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*/
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lv_obj_t * lv_preload_create(lv_obj_t * par, lv_obj_t * copy);
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/*======================
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* Add/remove functions
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*=====================*/
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/*=====================
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* Setter functions
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*====================*/
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/**
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* Set a style of a pre loader.
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* @param preload pointer to pre loader 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_preload_set_style(lv_obj_t * preload, lv_preload_style_t type, lv_style_t *style);
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/*=====================
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* Getter functions
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*====================*/
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/**
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* Get style of a pre loader.
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* @param preload pointer to pre loader 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_preload_get_style(lv_obj_t * preload, lv_preload_style_t type);
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/*=====================
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* Other functions
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*====================*/
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/**********************
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* MACROS
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**********************/
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#endif /*USE_LV_PRELOAD*/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /*LV_PRELOAD_H*/
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