Mascali
/
Picklock_RCM
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Picklock_RCM/bdk/libs/lvgl/lv_objx/lv_arc.c

311 lines
8.5 KiB
C
Raw Blame History

/**
* @file lv_arc.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_arc.h"
#if USE_LV_ARC != 0
#include "../lv_misc/lv_math.h"
#include "../lv_draw/lv_draw_arc.h"
#include "../lv_themes/lv_theme.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_arc_design(lv_obj_t * arc, const lv_area_t * mask, lv_design_mode_t mode);
static lv_res_t lv_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_func_t ancestor_signal;
static lv_design_func_t ancestor_design;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a arc object
* @param par pointer to an object, it will be the parent of the new arc
* @param copy pointer to a arc object, if not NULL then the new object will be copied from it
* @return pointer to the created arc
*/
lv_obj_t * lv_arc_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("arc create started");
/*Create the ancestor of arc*/
lv_obj_t * new_arc = lv_obj_create(par, copy);
lv_mem_assert(new_arc);
if(new_arc == NULL) return NULL;
/*Allocate the arc type specific extended data*/
lv_arc_ext_t * ext = lv_obj_allocate_ext_attr(new_arc, sizeof(lv_arc_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_arc);
if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_arc);
/*Initialize the allocated 'ext' */
ext->angle_start = 45;
ext->angle_end = 315;
/*The signal and design functions are not copied so set them here*/
lv_obj_set_signal_func(new_arc, lv_arc_signal);
lv_obj_set_design_func(new_arc, lv_arc_design);
/*Init the new arc arc*/
if(copy == NULL) {
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
lv_arc_set_style(new_arc, LV_ARC_STYLE_MAIN, th->arc);
} else {
lv_arc_set_style(new_arc, LV_ARC_STYLE_MAIN, &lv_style_plain_color);
}
}
/*Copy an existing arc*/
else {
lv_arc_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->angle_start = copy_ext->angle_start;
ext->angle_end = copy_ext->angle_end;
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_arc);
}
LV_LOG_INFO("arc created");
return new_arc;
}
/*======================
* Add/remove functions
*=====================*/
/*
* New object specific "add" or "remove" functions come here
*/
/*=====================
* Setter functions
*====================*/
/**
* Set the start and end angles of an arc. 0 deg: bottom, 90 deg: right etc.
* @param arc pointer to an arc object
* @param start the start angle [0..360]
* @param end the end angle [0..360]
*/
void lv_arc_set_angles(lv_obj_t * arc, uint16_t start, uint16_t end)
{
lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
if(start > 360) start = 360;
if(end > 360) end = 360;
ext->angle_start = start;
ext->angle_end = end;
lv_obj_invalidate(arc);
}
/**
* Set a style of a arc.
* @param arc pointer to arc object
* @param type which style should be set
* @param style pointer to a style
* */
void lv_arc_set_style(lv_obj_t * arc, lv_arc_style_t type, lv_style_t * style)
{
switch(type) {
case LV_ARC_STYLE_MAIN:
lv_obj_set_style(arc, style);
break;
}
}
/*=====================
* Getter functions
*====================*/
/**
* Get the start angle of an arc.
* @param arc pointer to an arc object
* @return the start angle [0..360]
*/
uint16_t lv_arc_get_angle_start(lv_obj_t * arc)
{
lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
return ext->angle_start;
}
/**
* Get the end angle of an arc.
* @param arc pointer to an arc object
* @return the end angle [0..360]
*/
uint16_t lv_arc_get_angle_end(lv_obj_t * arc)
{
lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
return ext->angle_end;
}
/**
* Get style of a arc.
* @param arc pointer to arc object
* @param type which style should be get
* @return style pointer to the style
* */
lv_style_t * lv_arc_get_style(const lv_obj_t * arc, lv_arc_style_t type)
{
lv_style_t * style = NULL;
switch(type) {
case LV_ARC_STYLE_MAIN:
style = lv_obj_get_style(arc);
break;
default:
style = NULL;
break;
}
return style;
}
/*=====================
* Other functions
*====================*/
/*
* New object specific "other" functions come here
*/
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the arcs
* @param arc 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_arc_design(lv_obj_t * arc, 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) {
return false;
}
/*Draw the object*/
else if(mode == LV_DESIGN_DRAW_MAIN) {
lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
lv_style_t * style = lv_arc_get_style(arc, LV_ARC_STYLE_MAIN);
lv_coord_t r = (LV_MATH_MIN(lv_obj_get_width(arc), lv_obj_get_height(arc))) / 2;
lv_coord_t x = arc->coords.x1 + lv_obj_get_width(arc) / 2;
lv_coord_t y = arc->coords.y1 + lv_obj_get_height(arc) / 2;
lv_opa_t opa_scale = lv_obj_get_opa_scale(arc);
lv_draw_arc(x, y, r, mask, ext->angle_start, ext->angle_end, style, opa_scale);
/*Draw circle on the ends if enabled */
if(style->line.rounded) {
lv_coord_t thick_half = style->line.width / 2;
lv_coord_t cir_x = ((r - thick_half) * lv_trigo_sin(ext->angle_start) >> LV_TRIGO_SHIFT);
lv_coord_t cir_y = ((r - thick_half) * lv_trigo_sin(ext->angle_start + 90) >> LV_TRIGO_SHIFT);
lv_style_t cir_style;
lv_style_copy(&cir_style, &lv_style_plain);
cir_style.body.grad_color = style->line.color;
cir_style.body.main_color = cir_style.body.grad_color;
cir_style.body.radius = LV_RADIUS_CIRCLE;
lv_area_t cir_area;
cir_area.x1 = cir_x + x - thick_half;
cir_area.y1 = cir_y + y - thick_half;
cir_area.x2 = cir_x + x + thick_half;
cir_area.y2 = cir_y + y + thick_half;
lv_draw_rect(&cir_area, mask, &cir_style, opa_scale);
cir_x = ((r - thick_half) * lv_trigo_sin(ext->angle_end) >> LV_TRIGO_SHIFT);
cir_y = ((r - thick_half) * lv_trigo_sin(ext->angle_end + 90) >> LV_TRIGO_SHIFT);
cir_area.x1 = cir_x + x - thick_half;
cir_area.y1 = cir_y + y - thick_half;
cir_area.x2 = cir_x + x + thick_half;
cir_area.y2 = cir_y + y + thick_half;
lv_draw_rect(&cir_area, mask, &cir_style, opa_scale);
}
}
/*Post draw when the children are drawn*/
else if(mode == LV_DESIGN_DRAW_POST) {
}
return true;
}
/**
* Signal function of the arc
* @param arc pointer to a arc 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_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(arc, sign, param);
if(res != LV_RES_OK) return res;
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_arc";
}
return res;
}
#endif
Reference in New Issue View Git Blame Copy Permalink