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lvgl/lv_objx/lv_rect.c

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/**
* @file lv_rect.c
*
*/
/*********************
* INCLUDES
*********************/
#include <lvgl/lv_misc/area.h>
#include <misc/mem/dyn_mem.h>
#include <misc/mem/linked_list.h>
#include <misc/others/color.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#if USE_LV_RECT != 0
#include "lv_rect.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_draw/lv_draw_vbasic.h"
#include "misc/math/math_base.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_rect_design(lv_obj_t* obj_dp, const area_t * mask_p, lv_design_mode_t mode);
static void lv_rects_init(void);
static void lv_rect_refr_layout(lv_obj_t * obj_dp);
static void lv_rect_layout_col(lv_obj_t * obj_dp);
static void lv_rect_layout_row(lv_obj_t * obj_dp);
static void lv_rect_layout_center(lv_obj_t * obj_dp);
static void lv_rect_layout_grid(lv_obj_t * obj_dp);
static void lv_rect_refr_autofit(lv_obj_t * obj_dp);
/**********************
* STATIC VARIABLES
**********************/
static lv_rects_t lv_rects_def;
static lv_rects_t lv_rects_transp;
static lv_rects_t lv_rects_border;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/*-----------------
* Create function
*-----------------*/
/**
* Create a label objects
* @param par_dp pointer to an object, it will be the parent of the new label
* @param copy_dp pointer to a rectangle object, if not NULL then the new object will be copied from it
* @return pointer to the created label
*/
lv_obj_t* lv_rect_create(lv_obj_t* par_dp, lv_obj_t * copy_dp)
{
/*Create a basic object*/
lv_obj_t* new_obj_dp = lv_obj_create(par_dp, copy_dp);
dm_assert(new_obj_dp);
lv_obj_alloc_ext(new_obj_dp, sizeof(lv_rect_ext_t));
lv_rect_ext_t * rect_ext_dp = lv_obj_get_ext(new_obj_dp);
lv_obj_set_design_f(new_obj_dp, lv_rect_design);
lv_obj_set_signal_f(new_obj_dp, lv_rect_signal);
/*Init the new rectangle*/
if(copy_dp == NULL) {
lv_obj_set_style(new_obj_dp, lv_rects_get(LV_RECTS_DEF, NULL));
rect_ext_dp->hfit_en = 0;
rect_ext_dp->vfit_en = 0;
} else {
lv_rect_ext_t * ori_rect_ext = lv_obj_get_ext(copy_dp);
rect_ext_dp->hfit_en = ori_rect_ext->hfit_en;
rect_ext_dp->vfit_en = ori_rect_ext->vfit_en;
rect_ext_dp->layout = ori_rect_ext->layout;
}
return new_obj_dp;
}
uint32_t sign_cnt = 0;
/**
* Signal function of the rectangle
* @param obj_dp pointer to a rectangle object
* @param sign a signal type from lv_signal_t enum
* @param param pointer to a signal specific variable
*/
bool lv_rect_signal(lv_obj_t* obj_dp, lv_signal_t sign, void * param)
{
bool valid;
/* Include the ancient signal function */
valid = lv_obj_signal(obj_dp, sign, param);
/* 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_STYLE_CHG: /*Recalculate the padding if the style changed*/
case LV_SIGNAL_CHILD_CHG:
sign_cnt++;
lv_rect_refr_layout(obj_dp);
lv_rect_refr_autofit(obj_dp);
break;
case LV_SIGNAL_CORD_CHG:
sign_cnt++;
if(lv_obj_get_width(obj_dp) != area_get_width(param) ||
lv_obj_get_height(obj_dp) != area_get_height(param)) {
lv_rect_refr_layout(obj_dp);
lv_rect_refr_autofit(obj_dp);
}
break;
break;
default:
break;
}
}
return valid;
}
/*=====================
* Setter functions
*====================*/
void lv_rect_set_layout(lv_obj_t * obj_dp, lv_rect_layout_t layout)
{
lv_rect_ext_t * ext_p = lv_obj_get_ext(obj_dp);
ext_p->layout = layout;
/*Send a signal to run the paddig calculations*/
obj_dp->signal_f(obj_dp, LV_SIGNAL_CHILD_CHG, NULL);
}
/**
* Enable the horizontal or vertical padding
* @param obj_dp pointer to a rectangle object
* @param hor_en true: enable the horizontal padding
* @param ver_en true: enable the vertical padding
*/
void lv_rect_set_fit(lv_obj_t * obj_dp, bool hor_en, bool ver_en)
{
lv_obj_inv(obj_dp);
lv_rect_ext_t * ext_p = lv_obj_get_ext(obj_dp);
ext_p->hfit_en = hor_en == false ? 0 : 1;
ext_p->vfit_en = ver_en == false ? 0 : 1;
/*Send a signal to run the paddig calculations*/
obj_dp->signal_f(obj_dp, LV_SIGNAL_CORD_CHG, obj_dp);
}
/*=====================
* Getter functions
*====================*/
lv_rect_layout_t lv_rect_get_layout(lv_obj_t * obj_dp)
{
lv_rect_ext_t * ext_p = lv_obj_get_ext(obj_dp);
return ext_p->layout;
}
/**
* Get horizontal padding enable attribute of a rectangle
* @param obj_dp pointer to a rectangle object
* @return true: horizontal padding is enabled
*/
bool lv_rect_get_hfit(lv_obj_t * obj_dp)
{
lv_rect_ext_t * ext_p = lv_obj_get_ext(obj_dp);
return ext_p->hfit_en == 0 ? false : true;
}
/**
* Get vertical padding enable attribute of a rectangle
* @param obj_dp pointer to a rectangle object
* @return true: vertical padding is enabled
*/
bool lv_rect_get_vfit(lv_obj_t * obj_dp)
{
lv_rect_ext_t * ext_p = lv_obj_get_ext(obj_dp);
return ext_p->vfit_en == 0 ? false : true;
}
/**
* Return with a pointer to a built-in style and/or copy it to a variable
* @param style a style name from lv_rects_builtin_t enum
* @param copy_p copy the style to this variable. (NULL if unused)
* @return pointer to an lv_rects_t style
*/
lv_rects_t * lv_rects_get(lv_rects_builtin_t style, lv_rects_t * copy_p)
{
static bool style_inited = false;
/*Make the style initialization if it is not done yet*/
if(style_inited == false) {
lv_rects_init();
style_inited = true;
}
lv_rects_t * style_p;
switch(style) {
case LV_RECTS_DEF:
style_p = &lv_rects_def;
break;
case LV_RECTS_BORDER:
style_p = &lv_rects_border;
break;
case LV_RECTS_TRANSP:
style_p = &lv_rects_transp;
break;
default:
style_p = &lv_rects_def;
}
if(copy_p != NULL) {
if(style_p != NULL) memcpy(copy_p, style_p, sizeof(lv_rects_t));
else memcpy(copy_p, &lv_rects_def, sizeof(lv_rects_t));
}
return style_p;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the rectangles
* @param obj_dp 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_rect_design(lv_obj_t* obj_dp, const area_t * mask_p, lv_design_mode_t mode)
{
/* Because of the radius it is not sure the area is covered*/
if(mode == LV_DESIGN_COVER_CHK) {
if(LV_SA(obj_dp, lv_rects_t)->empty != 0) return false;
uint16_t r = LV_SA(obj_dp, lv_rects_t)->round;
area_t area_tmp;
/*Check horizontally without radius*/
lv_obj_get_cords(obj_dp, &area_tmp);
area_tmp.x1 += r;
area_tmp.x2 -= r;
if(area_is_in(mask_p, &area_tmp) == true) return true;
/*Check vertically without radius*/
lv_obj_get_cords(obj_dp, &area_tmp);
area_tmp.y1 += r;
area_tmp.y2 -= r;
if(area_is_in(mask_p, &area_tmp) == true) return true;
return false;
} else if(mode == LV_DESIGN_DRAW_MAIN) {
opa_t opa = lv_obj_get_opa(obj_dp);
area_t area;
lv_obj_get_cords(obj_dp, &area);
/*Draw the rectangle*/
lv_draw_rect(&area, mask_p, lv_obj_get_style(obj_dp), opa);
}
return true;
}
/**
* Initialize the rectangle styles
*/
static void lv_rects_init(void)
{
/*Default style*/
lv_rects_def.objs.color = COLOR_MAKE(0x50, 0x70, 0x90);
lv_rects_def.gcolor = COLOR_MAKE(0x70, 0xA0, 0xC0);
lv_rects_def.bcolor = COLOR_WHITE;
lv_rects_def.bwidth = 2 * LV_STYLE_MULT;
lv_rects_def.bopa = 50;
lv_rects_def.round = 4 * LV_STYLE_MULT;
lv_rects_def.empty = 0;
lv_rects_def.hpad = 10 * LV_STYLE_MULT;
lv_rects_def.vpad = 10 * LV_STYLE_MULT;
lv_rects_def.opad = 10 * LV_STYLE_MULT;
/*Transparent style*/
memcpy(&lv_rects_transp, &lv_rects_def, sizeof(lv_rects_t));
lv_rects_transp.objs.transp = 1;
lv_rects_transp.bwidth = 0;
lv_rects_transp.empty = 1;
/*Border style*/
memcpy(&lv_rects_border, &lv_rects_def, sizeof(lv_rects_t));
lv_rects_border.bcolor = COLOR_BLACK;
lv_rects_border.bwidth = 2 * LV_STYLE_MULT;
lv_rects_border.bopa = 100;
lv_rects_border.round = 4 * LV_STYLE_MULT;
lv_rects_border.empty = 1;
}
/**
* Refresh the layout of a rectangle
* @param obj_dp pointer to an object which layout should be refreshed
*/
static void lv_rect_refr_layout(lv_obj_t * obj_dp)
{
lv_rect_layout_t type = lv_rect_get_layout(obj_dp);
if(type == LV_RECT_LAYOUT_OFF) return;
if(type == LV_RECT_LAYOUT_CENTER) {
lv_rect_layout_center(obj_dp);
} else if(type == LV_RECT_LAYOUT_COL_L || type == LV_RECT_LAYOUT_COL_M || type == LV_RECT_LAYOUT_COL_R) {
lv_rect_layout_col(obj_dp);
} else if(type == LV_RECT_LAYOUT_ROW_T || type == LV_RECT_LAYOUT_ROW_M || type == LV_RECT_LAYOUT_ROW_B) {
lv_rect_layout_row(obj_dp);
} else if(type == LV_RECT_LAYOUT_GRID) {
lv_rect_layout_grid(obj_dp);
}
}
/**
* Handle column type layouts
* @param obj_dp pointer to an object which layout should be handled
*/
static void lv_rect_layout_col(lv_obj_t * obj_dp)
{
lv_rect_layout_t type = lv_rect_get_layout(obj_dp);
lv_obj_t * child;
/*Adjust margin and get the alignment type*/
lv_align_t align;
lv_rects_t * rects_p = lv_obj_get_style(obj_dp);
cord_t hpad_corr;
switch(type) {
case LV_RECT_LAYOUT_COL_L:
hpad_corr = rects_p->hpad;
align = LV_ALIGN_IN_TOP_LEFT;
break;
case LV_RECT_LAYOUT_COL_M:
hpad_corr = 0;
align = LV_ALIGN_IN_TOP_MID;
break;
case LV_RECT_LAYOUT_COL_R:
hpad_corr = -rects_p->hpad;
align = LV_ALIGN_IN_TOP_RIGHT;
break;
default:
align = LV_ALIGN_IN_TOP_LEFT;
break;
}
/* Disable child change action because the children will be moved a lot
* an unnecessary child change signals could be sent*/
obj_dp->child_chg_off = 1;
/* Align the children */
cord_t last_cord = rects_p->vpad;
LL_READ_BACK(obj_dp->child_ll, child) {
if(lv_obj_get_hidden(child) != false) continue;
lv_obj_align(child, obj_dp, align, hpad_corr , last_cord);
last_cord += lv_obj_get_height(child) + rects_p->opad;
}
obj_dp->child_chg_off = 0;
}
/**
* Handle row type layouts
* @param obj_dp pointer to an object which layout should be handled
*/
static void lv_rect_layout_row(lv_obj_t * obj_dp)
{
lv_rect_layout_t type = lv_rect_get_layout(obj_dp);
lv_obj_t * child;
/*Adjust margin and get the alignment type*/
lv_align_t align;
lv_rects_t * rects_p = lv_obj_get_style(obj_dp);
cord_t vpad_corr = rects_p->vpad;
switch(type) {
case LV_RECT_LAYOUT_ROW_T:
vpad_corr = rects_p->vpad;
align = LV_ALIGN_IN_TOP_LEFT;
break;
case LV_RECT_LAYOUT_ROW_M:
vpad_corr = 0;
align = LV_ALIGN_IN_LEFT_MID;
break;
case LV_RECT_LAYOUT_ROW_B:
vpad_corr = -rects_p->vpad;
align = LV_ALIGN_IN_BOTTOM_LEFT;
break;
default:
vpad_corr = 0;
align = LV_ALIGN_IN_TOP_LEFT;
break;
}
/* Disable child change action because the children will be moved a lot
* an unnecessary child change signals could be sent*/
obj_dp->child_chg_off = 1;
/* Align the children */
cord_t last_cord = rects_p->hpad;
LL_READ_BACK(obj_dp->child_ll, child) {
if(lv_obj_get_hidden(child) != false) continue;
lv_obj_align(child, obj_dp, align, last_cord, vpad_corr);
last_cord += lv_obj_get_width(child) + rects_p->opad;
}
obj_dp->child_chg_off = 0;
}
/**
* Handle the center layout
* @param obj_dp pointer to an object which layout should be handled
*/
static void lv_rect_layout_center(lv_obj_t * obj_dp)
{
lv_obj_t * child;
lv_rects_t * rects_p = lv_obj_get_style(obj_dp);
uint32_t obj_num = 0;
cord_t h_tot = 0;
LL_READ(obj_dp->child_ll, child) {
h_tot += lv_obj_get_height(child) + rects_p->opad;
obj_num ++;
}
if(obj_num == 0) return;
h_tot -= rects_p->opad;
/* Disable child change action because the children will be moved a lot
* an unnecessary child change signals could be sent*/
obj_dp->child_chg_off = 1;
/* Align the children */
cord_t last_cord = - (h_tot / 2);
LL_READ_BACK(obj_dp->child_ll, child) {
if(lv_obj_get_hidden(child) != false) continue;
lv_obj_align(child, obj_dp, LV_ALIGN_CENTER, 0, last_cord + lv_obj_get_height(child) / 2);
last_cord += lv_obj_get_height(child) + rects_p->opad;
}
obj_dp->child_chg_off = 0;
}
/**
* Handle the grid layout. Put as many object as possible in row
* then begin a new row
* @param obj_dp pointer to an object which layout should be handled
*/
static void lv_rect_layout_grid(lv_obj_t * obj_dp)
{
lv_obj_t * child_rs; /* Row starter child */
lv_obj_t * child_rc; /* Row closer child */
lv_obj_t * child_tmp; /* Temporary child */
lv_rects_t * rects_p = lv_obj_get_style(obj_dp);
cord_t w_obj = lv_obj_get_width(obj_dp);
cord_t act_y = rects_p->vpad;
/* Disable child change action because the children will be moved a lot
* an unnecessary child change signals could be sent*/
child_rs = ll_get_tail(&obj_dp->child_ll); /*Set the row starter child*/
if(child_rs == NULL) return; /*Return if no child*/
obj_dp->child_chg_off = 1;
child_rc = child_rs; /*Initially the the row starter and closer is the same*/
while(child_rs != NULL) {
cord_t h_row = 0;
cord_t w_row = rects_p->hpad * 2; /*The width is minimum the left-right hpad*/
uint32_t obj_num = 0;
/*Find the row closer object and collect some data*/ do {
if(lv_obj_get_hidden(child_rc) == false) {
if(w_row + lv_obj_get_width(child_rc) > w_obj) break; /*If the next object is already not fit then break*/
w_row += lv_obj_get_width(child_rc) + rects_p->opad; /*Add the object width + opad*/
h_row = max(h_row, lv_obj_get_height(child_rc)); /*Search the highest object*/
obj_num ++;
}
child_rc = ll_get_prev(&obj_dp->child_ll, child_rc); /*Load the next object*/
if(obj_num == 0) child_rs = child_rc; /*If the first object was hidden (or too long) then set the next as first */
}while(child_rc != NULL);
/*Step back one child because the last is already not fit*/
if(child_rc != NULL && obj_num != 0) child_rc = ll_get_next(&obj_dp->child_ll, child_rc);
/*If the object is too long then align it to the middle*/
if(obj_num == 0) {
if(child_rc != NULL) {
h_row = lv_obj_get_height(child_rc);
lv_obj_align(child_rc, obj_dp, LV_ALIGN_IN_TOP_MID, 0, act_y);
}
}
/*If here is only one object in the row then align it to the left*/
else if (obj_num == 1) {
lv_obj_align(child_rs, obj_dp, LV_ALIGN_IN_TOP_LEFT, rects_p->hpad, act_y);
}
/* Align the children (from child_rs to child_rc)*/
else {
w_row -= rects_p->opad * obj_num;
cord_t new_opad = (w_obj - w_row) / (obj_num - 1);
cord_t act_x = rects_p->hpad; /*x init*/
child_tmp = child_rs;
do{
if(lv_obj_get_hidden(child_tmp) == false) {
lv_obj_align(child_tmp, obj_dp, LV_ALIGN_IN_TOP_LEFT, act_x, act_y);
act_x += lv_obj_get_width(child_tmp) + new_opad;
}
child_tmp = ll_get_prev(&obj_dp->child_ll, child_tmp);
}while(child_tmp != child_rc);
}
if(child_rc == NULL) break;
act_y += rects_p->opad + h_row; /*y increment*/
child_rs = ll_get_prev(&obj_dp->child_ll, child_rc); /*Go to the next object*/
child_rc = child_rs;
}
obj_dp->child_chg_off = 0;
}
/**
* Handle auto fit. Set the size of the object to involve all children.
* @param obj_dp pointer to an object which size will be modified
*/
void lv_rect_refr_autofit(lv_obj_t * obj_dp)
{
lv_rect_ext_t * ext_p = lv_obj_get_ext(obj_dp);
if(ext_p->hfit_en == 0 &&
ext_p->vfit_en == 0) {
return;
}
area_t rect_cords;
area_t ori;
lv_rects_t * rects_p = lv_obj_get_style(obj_dp);
lv_obj_t * i;
cord_t hpad = rects_p->hpad;
cord_t vpad = rects_p->vpad;
/*Search the side coordinates of the children*/
lv_obj_get_cords(obj_dp, &ori);
lv_obj_get_cords(obj_dp, &rect_cords);
rect_cords.x1 = LV_CORD_MAX;
rect_cords.y1 = LV_CORD_MAX;
rect_cords.x2 = LV_CORD_MIN;
rect_cords.y2 = LV_CORD_MIN;
LL_READ(obj_dp->child_ll, i) {
if(lv_obj_get_hidden(i) != false) continue;
rect_cords.x1 = min(rect_cords.x1, i->cords.x1);
rect_cords.y1 = min(rect_cords.y1, i->cords.y1);
rect_cords.x2 = max(rect_cords.x2, i->cords.x2);
rect_cords.y2 = max(rect_cords.y2, i->cords.y2);
}
/*If the value is not the init value then the page has >=1 child.*/
if(rect_cords.x1 != LV_CORD_MAX) {
if(ext_p->hfit_en != 0) {
rect_cords.x1 -= hpad;
rect_cords.x2 += hpad;
} else {
rect_cords.x1 = obj_dp->cords.x1;
rect_cords.x2 = obj_dp->cords.x2;
}
if(ext_p->vfit_en != 0) {
rect_cords.y1 -= vpad;
rect_cords.y2 += vpad;
} else {
rect_cords.y1 = obj_dp->cords.y1;
rect_cords.y2 = obj_dp->cords.y2;
}
lv_obj_inv(obj_dp);
area_cpy(&obj_dp->cords, &rect_cords);
lv_obj_inv(obj_dp);
/*Notify the object about its new coordinates*/
obj_dp->signal_f(obj_dp, LV_SIGNAL_CORD_CHG, &ori);
/*Inform the parent about the new coordinates*/
lv_obj_t * par_dp = lv_obj_get_parent(obj_dp);
par_dp->signal_f(par_dp, LV_SIGNAL_CHILD_CHG, obj_dp);
}
}
#endif
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