chenyf
/
lvgl_cpp
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
lvgl_cpp/lvgl/core/lv_obj_pos.c

1111 lines
35 KiB
C
Raw Blame History

/**
* @file lv_obj_pos.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_obj.h"
#include "lv_disp.h"
#include "lv_refr.h"
#include "../misc/lv_gc.h"
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_obj_class
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_coord_t calc_content_width(lv_obj_t * obj);
static lv_coord_t calc_content_height(lv_obj_t * obj);
static void layout_update_core(lv_obj_t * obj);
/**********************
* STATIC VARIABLES
**********************/
static uint32_t layout_cnt;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_obj_set_pos(lv_obj_t * obj, lv_coord_t x, lv_coord_t y)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_obj_set_x(obj, x);
lv_obj_set_y(obj, y);
}
void lv_obj_set_x(lv_obj_t * obj, lv_coord_t x)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_res_t res_x;
lv_style_value_t v_x;
res_x = lv_obj_get_local_style_prop(obj, LV_STYLE_X, &v_x, 0);
if((res_x == LV_RES_OK && v_x.num != x) || res_x == LV_RES_INV) {
lv_obj_set_style_x(obj, x, 0);
}
}
void lv_obj_set_y(lv_obj_t * obj, lv_coord_t y)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_res_t res_y;
lv_style_value_t v_y;
res_y = lv_obj_get_local_style_prop(obj, LV_STYLE_Y, &v_y, 0);
if((res_y == LV_RES_OK && v_y.num != y) || res_y == LV_RES_INV) {
lv_obj_set_style_y(obj, y, 0);
}
}
bool lv_obj_refr_size(lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
/*If the width or height is set by a layout do not modify them*/
if(obj->w_layout && obj->h_layout) return false;
lv_obj_t * parent = lv_obj_get_parent(obj);
if(parent == NULL) return false;
lv_coord_t sl_ori = lv_obj_get_scroll_left(obj);
bool w_is_content = false;
bool w_is_pct = false;
lv_coord_t w;
if(obj->w_layout) {
w = lv_obj_get_width(obj);
}
else {
w = lv_obj_get_style_width(obj, LV_PART_MAIN);
w_is_content = w == LV_SIZE_CONTENT ? true : false;
w_is_pct = LV_COORD_IS_PCT(w) ? true : false;
lv_coord_t parent_w = lv_obj_get_content_width(parent);
if(w_is_content) {
w = calc_content_width(obj);
}
else if(w_is_pct) {
/*If parent has content size and the child has pct size
*a circular dependency will occur. To solve it keep child size at zero */
if(parent->w_layout == 0 && lv_obj_get_style_width(parent, 0) == LV_SIZE_CONTENT) {
lv_coord_t border_w = lv_obj_get_style_border_width(obj, 0);
w = lv_obj_get_style_pad_left(obj, 0) + border_w;
w += lv_obj_get_style_pad_right(obj, 0) + border_w;
}
else {
w = (LV_COORD_GET_PCT(w) * parent_w) / 100;
}
}
lv_coord_t minw = lv_obj_get_style_min_width(obj, LV_PART_MAIN);
lv_coord_t maxw = lv_obj_get_style_max_width(obj, LV_PART_MAIN);
w = lv_clamp_width(w, minw, maxw, parent_w);
}
lv_coord_t st_ori = lv_obj_get_scroll_top(obj);
lv_coord_t h;
bool h_is_content = false;
bool h_is_pct = false;
if(obj->h_layout) {
h = lv_obj_get_height(obj);
}
else {
h = lv_obj_get_style_height(obj, LV_PART_MAIN);
h_is_content = h == LV_SIZE_CONTENT ? true : false;
h_is_pct = LV_COORD_IS_PCT(h) ? true : false;
lv_coord_t parent_h = lv_obj_get_content_height(parent);
if(h_is_content) {
h = calc_content_height(obj);
}
else if(h_is_pct) {
/*If parent has content size and the child has pct size
*a circular dependency will occur. To solve it keep child size at zero */
if(parent->h_layout == 0 && lv_obj_get_style_height(parent, 0) == LV_SIZE_CONTENT) {
lv_coord_t border_w = lv_obj_get_style_border_width(obj, 0);
h = lv_obj_get_style_pad_top(obj, 0) + border_w;
h += lv_obj_get_style_pad_bottom(obj, 0) + border_w;
}
else {
h = (LV_COORD_GET_PCT(h) * parent_h) / 100;
}
}
lv_coord_t minh = lv_obj_get_style_min_height(obj, LV_PART_MAIN);
lv_coord_t maxh = lv_obj_get_style_max_height(obj, LV_PART_MAIN);
h = lv_clamp_height(h, minh, maxh, parent_h);
}
/*calc_auto_size set the scroll x/y to 0 so revert the original value*/
if(w_is_content || h_is_content) {
lv_obj_scroll_to(obj, sl_ori, st_ori, LV_ANIM_OFF);
}
/*Do nothing if the size is not changed*/
/*It is very important else recursive resizing can occur without size change*/
if(lv_obj_get_width(obj) == w && lv_obj_get_height(obj) == h) return false;
/*Invalidate the original area*/
lv_obj_invalidate(obj);
/*Save the original coordinates*/
lv_area_t ori;
lv_obj_get_coords(obj, &ori);
/*Check if the object inside the parent or not*/
lv_area_t parent_fit_area;
lv_obj_get_content_coords(parent, &parent_fit_area);
/*If the object is already out of the parent and its position is changes
*surely the scrollbars also changes so invalidate them*/
bool on1 = _lv_area_is_in(&ori, &parent_fit_area, 0);
if(!on1) lv_obj_scrollbar_invalidate(parent);
/*Set the length and height
*Be sure the content is not scrolled in an invalid position on the new size*/
obj->coords.y2 = obj->coords.y1 + h - 1;
if(lv_obj_get_style_base_dir(obj, LV_PART_MAIN) == LV_BASE_DIR_RTL) {
obj->coords.x1 = obj->coords.x2 - w + 1;
}
else {
obj->coords.x2 = obj->coords.x1 + w - 1;
}
/*Call the ancestor's event handler to the object with its new coordinates*/
lv_event_send(obj, LV_EVENT_SIZE_CHANGED, &ori);
/*Call the ancestor's event handler to the parent too*/
lv_event_send(parent, LV_EVENT_CHILD_CHANGED, obj);
/*Invalidate the new area*/
lv_obj_invalidate(obj);
lv_obj_readjust_scroll(obj, LV_ANIM_OFF);
/*If the object was out of the parent invalidate the new scrollbar area too.
*If it wasn't out of the parent but out now, also invalidate the scrollbars*/
bool on2 = _lv_area_is_in(&obj->coords, &parent_fit_area, 0);
if(on1 || (!on1 && on2)) lv_obj_scrollbar_invalidate(parent);
return true;
}
void lv_obj_set_size(lv_obj_t * obj, lv_coord_t w, lv_coord_t h)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_obj_set_width(obj, w);
lv_obj_set_height(obj, h);
}
void lv_obj_set_width(lv_obj_t * obj, lv_coord_t w)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_res_t res_w;
lv_style_value_t v_w;
res_w = lv_obj_get_local_style_prop(obj, LV_STYLE_WIDTH, &v_w, 0);
if((res_w == LV_RES_OK && v_w.num != w) || res_w == LV_RES_INV) {
lv_obj_set_style_width(obj, w, 0);
}
}
void lv_obj_set_height(lv_obj_t * obj, lv_coord_t h)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_res_t res_h;
lv_style_value_t v_h;
res_h = lv_obj_get_local_style_prop(obj, LV_STYLE_HEIGHT, &v_h, 0);
if((res_h == LV_RES_OK && v_h.num != h) || res_h == LV_RES_INV) {
lv_obj_set_style_height(obj, h, 0);
}
}
void lv_obj_set_content_width(lv_obj_t * obj, lv_coord_t w)
{
lv_coord_t pleft = lv_obj_get_style_pad_left(obj, LV_PART_MAIN);
lv_coord_t pright = lv_obj_get_style_pad_right(obj, LV_PART_MAIN);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_obj_set_width(obj, w + pleft + pright + 2 * border_width);
}
void lv_obj_set_content_height(lv_obj_t * obj, lv_coord_t h)
{
lv_coord_t ptop = lv_obj_get_style_pad_top(obj, LV_PART_MAIN);
lv_coord_t pbottom = lv_obj_get_style_pad_bottom(obj, LV_PART_MAIN);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_obj_set_height(obj, h + ptop + pbottom + 2 * border_width);
}
void lv_obj_set_layout(lv_obj_t * obj, uint32_t layout)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_obj_set_style_layout(obj, layout, 0);
lv_obj_mark_layout_as_dirty(obj);
}
bool lv_obj_is_layout_positioned(const lv_obj_t * obj)
{
if(lv_obj_has_flag_any(obj, LV_OBJ_FLAG_HIDDEN | LV_OBJ_FLAG_IGNORE_LAYOUT | LV_OBJ_FLAG_FLOATING)) return false;
lv_obj_t * parent = lv_obj_get_parent(obj);
if(parent == NULL) return false;
uint32_t layout = lv_obj_get_style_layout(parent, LV_PART_MAIN);
if(layout) return true;
else return false;
}
void lv_obj_mark_layout_as_dirty(lv_obj_t * obj)
{
obj->layout_inv = 1;
/*Mark the screen as dirty too to mark that there is something to do on this screen*/
lv_obj_t * scr = lv_obj_get_screen(obj);
scr->scr_layout_inv = 1;
/*Make the display refreshing*/
lv_disp_t * disp = lv_obj_get_disp(scr);
if(disp->refr_timer) lv_timer_resume(disp->refr_timer);
}
void lv_obj_update_layout(const lv_obj_t * obj)
{
static bool mutex = false;
if(mutex) {
LV_LOG_TRACE("Already running, returning");
return;
}
mutex = true;
lv_obj_t * scr = lv_obj_get_screen(obj);
/*Repeat until there where layout invalidations*/
while(scr->scr_layout_inv) {
LV_LOG_INFO("Layout update begin");
scr->scr_layout_inv = 0;
layout_update_core(scr);
LV_LOG_TRACE("Layout update end");
}
mutex = false;
}
uint32_t lv_layout_register(lv_layout_update_cb_t cb, void * user_data)
{
layout_cnt++;
LV_GC_ROOT(_lv_layout_list) = lv_mem_realloc(LV_GC_ROOT(_lv_layout_list), layout_cnt * sizeof(lv_layout_dsc_t));
LV_ASSERT_MALLOC(LV_GC_ROOT(_lv_layout_list));
LV_GC_ROOT(_lv_layout_list)[layout_cnt - 1].cb = cb;
LV_GC_ROOT(_lv_layout_list)[layout_cnt - 1].user_data = user_data;
return layout_cnt; /*No -1 to skip 0th index*/
}
void lv_obj_set_align(lv_obj_t * obj, lv_align_t align)
{
lv_obj_set_style_align(obj, align, 0);
}
void lv_obj_align(lv_obj_t * obj, lv_align_t align, lv_coord_t x_ofs, lv_coord_t y_ofs)
{
lv_obj_set_style_align(obj, align, 0);
lv_obj_set_pos(obj, x_ofs, y_ofs);
}
void lv_obj_align_to(lv_obj_t * obj, const lv_obj_t * base, lv_align_t align, lv_coord_t x_ofs, lv_coord_t y_ofs)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_obj_update_layout(obj);
if(base == NULL) base = lv_obj_get_parent(obj);
LV_ASSERT_OBJ(base, MY_CLASS);
lv_coord_t x = 0;
lv_coord_t y = 0;
lv_obj_t * parent = lv_obj_get_parent(obj);
lv_coord_t pborder = lv_obj_get_style_border_width(parent, LV_PART_MAIN);
lv_coord_t pleft = lv_obj_get_style_pad_left(parent, LV_PART_MAIN) + pborder;
lv_coord_t ptop = lv_obj_get_style_pad_top(parent, LV_PART_MAIN) + pborder;
lv_coord_t bborder = lv_obj_get_style_border_width(base, LV_PART_MAIN);
lv_coord_t bleft = lv_obj_get_style_pad_left(base, LV_PART_MAIN) + bborder;
lv_coord_t btop = lv_obj_get_style_pad_top(base, LV_PART_MAIN) + bborder;
if(align == LV_ALIGN_DEFAULT) {
if(lv_obj_get_style_base_dir(base, LV_PART_MAIN) == LV_BASE_DIR_RTL) align = LV_ALIGN_TOP_RIGHT;
else align = LV_ALIGN_TOP_LEFT;
}
switch(align) {
case LV_ALIGN_CENTER:
x = lv_obj_get_content_width(base) / 2 - lv_obj_get_width(obj) / 2 + bleft;
y = lv_obj_get_content_height(base) / 2 - lv_obj_get_height(obj) / 2 + btop;
break;
case LV_ALIGN_TOP_LEFT:
x = bleft;
y = btop;
break;
case LV_ALIGN_TOP_MID:
x = lv_obj_get_content_width(base) / 2 - lv_obj_get_width(obj) / 2 + bleft;
y = btop;
break;
case LV_ALIGN_TOP_RIGHT:
x = lv_obj_get_content_width(base) - lv_obj_get_width(obj) + bleft;
y = btop;
break;
case LV_ALIGN_BOTTOM_LEFT:
x = bleft;
y = lv_obj_get_content_height(base) - lv_obj_get_height(obj) + btop;
break;
case LV_ALIGN_BOTTOM_MID:
x = lv_obj_get_content_width(base) / 2 - lv_obj_get_width(obj) / 2 + bleft;
y = lv_obj_get_content_height(base) - lv_obj_get_height(obj) + btop;
break;
case LV_ALIGN_BOTTOM_RIGHT:
x = lv_obj_get_content_width(base) - lv_obj_get_width(obj) + bleft;
y = lv_obj_get_content_height(base) - lv_obj_get_height(obj) + btop;
break;
case LV_ALIGN_LEFT_MID:
x = bleft;
y = lv_obj_get_content_height(base) / 2 - lv_obj_get_height(obj) / 2 + btop;
break;
case LV_ALIGN_RIGHT_MID:
x = lv_obj_get_content_width(base) - lv_obj_get_width(obj) + bleft;
y = lv_obj_get_content_height(base) / 2 - lv_obj_get_height(obj) / 2 + btop;
break;
case LV_ALIGN_OUT_TOP_LEFT:
x = 0;
y = -lv_obj_get_height(obj);
break;
case LV_ALIGN_OUT_TOP_MID:
x = lv_obj_get_width(base) / 2 - lv_obj_get_width(obj) / 2;
y = -lv_obj_get_height(obj);
break;
case LV_ALIGN_OUT_TOP_RIGHT:
x = lv_obj_get_width(base) - lv_obj_get_width(obj);
y = -lv_obj_get_height(obj);
break;
case LV_ALIGN_OUT_BOTTOM_LEFT:
x = 0;
y = lv_obj_get_height(base);
break;
case LV_ALIGN_OUT_BOTTOM_MID:
x = lv_obj_get_width(base) / 2 - lv_obj_get_width(obj) / 2;
y = lv_obj_get_height(base);
break;
case LV_ALIGN_OUT_BOTTOM_RIGHT:
x = lv_obj_get_width(base) - lv_obj_get_width(obj);
y = lv_obj_get_height(base);
break;
case LV_ALIGN_OUT_LEFT_TOP:
x = -lv_obj_get_width(obj);
y = 0;
break;
case LV_ALIGN_OUT_LEFT_MID:
x = -lv_obj_get_width(obj);
y = lv_obj_get_height(base) / 2 - lv_obj_get_height(obj) / 2;
break;
case LV_ALIGN_OUT_LEFT_BOTTOM:
x = -lv_obj_get_width(obj);
y = lv_obj_get_height(base) - lv_obj_get_height(obj);
break;
case LV_ALIGN_OUT_RIGHT_TOP:
x = lv_obj_get_width(base);
y = 0;
break;
case LV_ALIGN_OUT_RIGHT_MID:
x = lv_obj_get_width(base);
y = lv_obj_get_height(base) / 2 - lv_obj_get_height(obj) / 2;
break;
case LV_ALIGN_OUT_RIGHT_BOTTOM:
x = lv_obj_get_width(base);
y = lv_obj_get_height(base) - lv_obj_get_height(obj);
break;
}
if(lv_obj_get_style_base_dir(parent, LV_PART_MAIN) == LV_BASE_DIR_RTL) {
x += x_ofs + base->coords.x1 - parent->coords.x1 + lv_obj_get_scroll_right(parent) - pleft;
}
else {
x += x_ofs + base->coords.x1 - parent->coords.x1 + lv_obj_get_scroll_left(parent) - pleft;
}
y += y_ofs + base->coords.y1 - parent->coords.y1 + lv_obj_get_scroll_top(parent) - ptop;
lv_obj_set_style_align(obj, LV_ALIGN_TOP_LEFT, 0);
lv_obj_set_pos(obj, x, y);
}
void lv_obj_get_coords(const lv_obj_t * obj, lv_area_t * coords)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_area_copy(coords, &obj->coords);
}
lv_coord_t lv_obj_get_x(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_coord_t rel_x;
lv_obj_t * parent = lv_obj_get_parent(obj);
if(parent) {
rel_x = obj->coords.x1 - parent->coords.x1;
rel_x += lv_obj_get_scroll_x(parent);
rel_x -= lv_obj_get_style_pad_left(parent, LV_PART_MAIN);
rel_x -= lv_obj_get_style_border_width(parent, LV_PART_MAIN);
}
else {
rel_x = obj->coords.x1;
}
return rel_x;
}
lv_coord_t lv_obj_get_x2(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return lv_obj_get_x(obj) + lv_obj_get_width(obj);
}
lv_coord_t lv_obj_get_y(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_coord_t rel_y;
lv_obj_t * parent = lv_obj_get_parent(obj);
if(parent) {
rel_y = obj->coords.y1 - parent->coords.y1;
rel_y += lv_obj_get_scroll_y(parent);
rel_y -= lv_obj_get_style_pad_top(parent, LV_PART_MAIN);
rel_y -= lv_obj_get_style_border_width(parent, LV_PART_MAIN);
}
else {
rel_y = obj->coords.y1;
}
return rel_y;
}
lv_coord_t lv_obj_get_y2(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return lv_obj_get_y(obj) + lv_obj_get_height(obj);
}
lv_coord_t lv_obj_get_x_aligned(const lv_obj_t * obj)
{
return lv_obj_get_style_x(obj, LV_PART_MAIN);
}
lv_coord_t lv_obj_get_y_aligned(const lv_obj_t * obj)
{
return lv_obj_get_style_y(obj, LV_PART_MAIN);
}
lv_coord_t lv_obj_get_width(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return lv_area_get_width(&obj->coords);
}
lv_coord_t lv_obj_get_height(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
return lv_area_get_height(&obj->coords);
}
lv_coord_t lv_obj_get_content_width(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_coord_t left = lv_obj_get_style_pad_left(obj, LV_PART_MAIN);
lv_coord_t right = lv_obj_get_style_pad_right(obj, LV_PART_MAIN);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
return lv_obj_get_width(obj) - left - right - 2 * border_width;
}
lv_coord_t lv_obj_get_content_height(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_coord_t top = lv_obj_get_style_pad_top(obj, LV_PART_MAIN);
lv_coord_t bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_MAIN);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
return lv_obj_get_height(obj) - top - bottom - 2 * border_width;
}
void lv_obj_get_content_coords(const lv_obj_t * obj, lv_area_t * area)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_obj_get_coords(obj, area);
lv_area_increase(area, -border_width, -border_width);
area->x1 += lv_obj_get_style_pad_left(obj, LV_PART_MAIN);
area->x2 -= lv_obj_get_style_pad_right(obj, LV_PART_MAIN);
area->y1 += lv_obj_get_style_pad_top(obj, LV_PART_MAIN);
area->y2 -= lv_obj_get_style_pad_bottom(obj, LV_PART_MAIN);
}
lv_coord_t lv_obj_get_self_width(const lv_obj_t * obj)
{
lv_point_t p = {0, LV_COORD_MIN};
lv_event_send((lv_obj_t *)obj, LV_EVENT_GET_SELF_SIZE, &p);
return p.x;
}
lv_coord_t lv_obj_get_self_height(const lv_obj_t * obj)
{
lv_point_t p = {LV_COORD_MIN, 0};
lv_event_send((lv_obj_t *)obj, LV_EVENT_GET_SELF_SIZE, &p);
return p.y;
}
bool lv_obj_refresh_self_size(lv_obj_t * obj)
{
lv_coord_t w_set = lv_obj_get_style_width(obj, LV_PART_MAIN);
lv_coord_t h_set = lv_obj_get_style_height(obj, LV_PART_MAIN);
if(w_set != LV_SIZE_CONTENT && h_set != LV_SIZE_CONTENT) return false;
lv_obj_mark_layout_as_dirty(obj);
return true;
}
void lv_obj_refr_pos(lv_obj_t * obj)
{
if(lv_obj_is_layout_positioned(obj)) return;
lv_obj_t * parent = lv_obj_get_parent(obj);
lv_coord_t x = lv_obj_get_style_x(obj, LV_PART_MAIN);
lv_coord_t y = lv_obj_get_style_y(obj, LV_PART_MAIN);
if(parent == NULL) {
lv_obj_move_to(obj, x, y);
return;
}
/*Handle percentage value*/
lv_coord_t pw = lv_obj_get_content_width(parent);
lv_coord_t ph = lv_obj_get_content_height(parent);
if(LV_COORD_IS_PCT(x)) x = (pw * LV_COORD_GET_PCT(x)) / 100;
if(LV_COORD_IS_PCT(y)) y = (ph * LV_COORD_GET_PCT(y)) / 100;
/*Handle percentage value of translate*/
lv_coord_t tr_x = lv_obj_get_style_translate_x(obj, LV_PART_MAIN);
lv_coord_t tr_y = lv_obj_get_style_translate_y(obj, LV_PART_MAIN);
lv_coord_t w = lv_obj_get_width(obj);
lv_coord_t h = lv_obj_get_height(obj);
if(LV_COORD_IS_PCT(tr_x)) tr_x = (w * LV_COORD_GET_PCT(tr_x)) / 100;
if(LV_COORD_IS_PCT(tr_y)) tr_y = (h * LV_COORD_GET_PCT(tr_y)) / 100;
/*Use the translation*/
x += tr_x;
y += tr_y;
lv_align_t align = lv_obj_get_style_align(obj, LV_PART_MAIN);
if(align == LV_ALIGN_DEFAULT) {
if(lv_obj_get_style_base_dir(parent, LV_PART_MAIN) == LV_BASE_DIR_RTL) align = LV_ALIGN_TOP_RIGHT;
else align = LV_ALIGN_TOP_LEFT;
}
if(align == LV_ALIGN_TOP_LEFT) {
lv_obj_move_to(obj, x, y);
}
else {
switch(align) {
case LV_ALIGN_TOP_MID:
x += pw / 2 - w / 2;
break;
case LV_ALIGN_TOP_RIGHT:
x += pw - w;
break;
case LV_ALIGN_LEFT_MID:
y += ph / 2 - h / 2;
break;
case LV_ALIGN_BOTTOM_LEFT:
y += ph - h;
break;
case LV_ALIGN_BOTTOM_MID:
x += pw / 2 - w / 2;
y += ph - h;
break;
case LV_ALIGN_BOTTOM_RIGHT:
x += pw - w;
y += ph - h;
break;
case LV_ALIGN_RIGHT_MID:
x += pw - w;
y += ph / 2 - h / 2;
break;
case LV_ALIGN_CENTER:
x += pw / 2 - w / 2;
y += ph / 2 - h / 2;
break;
default:
break;
}
lv_obj_move_to(obj, x, y);
}
}
void lv_obj_move_to(lv_obj_t * obj, lv_coord_t x, lv_coord_t y)
{
/*Convert x and y to absolute coordinates*/
lv_obj_t * parent = obj->parent;
if(parent) {
lv_coord_t pad_left = lv_obj_get_style_pad_left(parent, LV_PART_MAIN);
lv_coord_t pad_top = lv_obj_get_style_pad_top(parent, LV_PART_MAIN);
if(lv_obj_has_flag(obj, LV_OBJ_FLAG_FLOATING)) {
x += pad_left + parent->coords.x1;
y += pad_top + parent->coords.y1;
}
else {
x += pad_left + parent->coords.x1 - lv_obj_get_scroll_x(parent);
y += pad_top + parent->coords.y1 - lv_obj_get_scroll_y(parent);
}
lv_coord_t border_width = lv_obj_get_style_border_width(parent, LV_PART_MAIN);
x += border_width;
y += border_width;
}
/*Calculate and set the movement*/
lv_point_t diff;
diff.x = x - obj->coords.x1;
diff.y = y - obj->coords.y1;
/*Do nothing if the position is not changed*/
/*It is very important else recursive positioning can
*occur without position change*/
if(diff.x == 0 && diff.y == 0) return;
/*Invalidate the original area*/
lv_obj_invalidate(obj);
/*Save the original coordinates*/
lv_area_t ori;
lv_obj_get_coords(obj, &ori);
/*Check if the object inside the parent or not*/
lv_area_t parent_fit_area;
bool on1 = false;
if(parent) {
lv_obj_get_content_coords(parent, &parent_fit_area);
/*If the object is already out of the parent and its position is changes
*surely the scrollbars also changes so invalidate them*/
on1 = _lv_area_is_in(&ori, &parent_fit_area, 0);
if(!on1) lv_obj_scrollbar_invalidate(parent);
}
obj->coords.x1 += diff.x;
obj->coords.y1 += diff.y;
obj->coords.x2 += diff.x;
obj->coords.y2 += diff.y;
lv_obj_move_children_by(obj, diff.x, diff.y, false);
/*Call the ancestor's event handler to the parent too*/
if(parent) lv_event_send(parent, LV_EVENT_CHILD_CHANGED, obj);
/*Invalidate the new area*/
lv_obj_invalidate(obj);
/*If the object was out of the parent invalidate the new scrollbar area too.
*If it wasn't out of the parent but out now, also invalidate the srollbars*/
if(parent) {
bool on2 = _lv_area_is_in(&obj->coords, &parent_fit_area, 0);
if(on1 || (!on1 && on2)) lv_obj_scrollbar_invalidate(parent);
}
}
void lv_obj_move_children_by(lv_obj_t * obj, lv_coord_t x_diff, lv_coord_t y_diff, bool ignore_floating)
{
uint32_t i;
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
if(ignore_floating && lv_obj_has_flag(child, LV_OBJ_FLAG_FLOATING)) continue;
child->coords.x1 += x_diff;
child->coords.y1 += y_diff;
child->coords.x2 += x_diff;
child->coords.y2 += y_diff;
lv_obj_move_children_by(child, x_diff, y_diff, false);
}
}
void lv_obj_invalidate_area(const lv_obj_t * obj, const lv_area_t * area)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_area_t area_tmp;
lv_area_copy(&area_tmp, area);
bool visible = lv_obj_area_is_visible(obj, &area_tmp);
if(visible) _lv_inv_area(lv_obj_get_disp(obj), &area_tmp);
}
void lv_obj_invalidate(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
/*If the object has overflow visible it can be drawn anywhere on its parent
*It needs to be checked recursively*/
while(lv_obj_get_parent(obj) && lv_obj_has_flag(obj, LV_OBJ_FLAG_OVERFLOW_VISIBLE)) {
obj = lv_obj_get_parent(obj);
}
/*Truncate the area to the object*/
lv_area_t obj_coords;
lv_coord_t ext_size = _lv_obj_get_ext_draw_size(obj);
lv_area_copy(&obj_coords, &obj->coords);
obj_coords.x1 -= ext_size;
obj_coords.y1 -= ext_size;
obj_coords.x2 += ext_size;
obj_coords.y2 += ext_size;
lv_obj_invalidate_area(obj, &obj_coords);
}
bool lv_obj_area_is_visible(const lv_obj_t * obj, lv_area_t * area)
{
if(lv_obj_has_flag(obj, LV_OBJ_FLAG_HIDDEN)) return false;
/*Invalidate the object only if it belongs to the current or previous or one of the layers'*/
lv_obj_t * obj_scr = lv_obj_get_screen(obj);
lv_disp_t * disp = lv_obj_get_disp(obj_scr);
if(obj_scr != lv_disp_get_scr_act(disp) &&
obj_scr != lv_disp_get_scr_prev(disp) &&
obj_scr != lv_disp_get_layer_top(disp) &&
obj_scr != lv_disp_get_layer_sys(disp)) {
return false;
}
/*Truncate the area to the object*/
if(!lv_obj_has_flag(obj, LV_OBJ_FLAG_OVERFLOW_VISIBLE)) {
lv_area_t obj_coords;
lv_coord_t ext_size = _lv_obj_get_ext_draw_size(obj);
lv_area_copy(&obj_coords, &obj->coords);
obj_coords.x1 -= ext_size;
obj_coords.y1 -= ext_size;
obj_coords.x2 += ext_size;
obj_coords.y2 += ext_size;
/*The area is not on the object*/
if(!_lv_area_intersect(area, area, &obj_coords)) return false;
}
/*Truncate recursively to the parents*/
lv_obj_t * par = lv_obj_get_parent(obj);
while(par != NULL) {
/*If the parent is hidden then the child is hidden and won't be drawn*/
if(lv_obj_has_flag(par, LV_OBJ_FLAG_HIDDEN)) return false;
/*Truncate to the parent and if no common parts break*/
if(!lv_obj_has_flag(par, LV_OBJ_FLAG_OVERFLOW_VISIBLE)) {
if(!_lv_area_intersect(area, area, &par->coords)) return false;
}
par = lv_obj_get_parent(par);
}
return true;
}
bool lv_obj_is_visible(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_area_t obj_coords;
lv_coord_t ext_size = _lv_obj_get_ext_draw_size(obj);
lv_area_copy(&obj_coords, &obj->coords);
obj_coords.x1 -= ext_size;
obj_coords.y1 -= ext_size;
obj_coords.x2 += ext_size;
obj_coords.y2 += ext_size;
return lv_obj_area_is_visible(obj, &obj_coords);
}
void lv_obj_set_ext_click_area(lv_obj_t * obj, lv_coord_t size)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_obj_allocate_spec_attr(obj);
obj->spec_attr->ext_click_pad = size;
}
void lv_obj_get_click_area(const lv_obj_t * obj, lv_area_t * area)
{
lv_area_copy(area, &obj->coords);
if(obj->spec_attr) {
area->x1 -= obj->spec_attr->ext_click_pad;
area->x2 += obj->spec_attr->ext_click_pad;
area->y1 -= obj->spec_attr->ext_click_pad;
area->y2 += obj->spec_attr->ext_click_pad;
}
}
bool lv_obj_hit_test(lv_obj_t * obj, const lv_point_t * point)
{
if(!lv_obj_has_flag(obj, LV_OBJ_FLAG_CLICKABLE)) return false;
if(lv_obj_has_state(obj, LV_STATE_DISABLED)) return false;
lv_area_t a;
lv_obj_get_click_area(obj, &a);
bool res = _lv_area_is_point_on(&a, point, 0);
if(res == false) return false;
if(lv_obj_has_flag(obj, LV_OBJ_FLAG_ADV_HITTEST)) {
lv_hit_test_info_t hit_info;
hit_info.point = point;
hit_info.res = true;
lv_event_send(obj, LV_EVENT_HIT_TEST, &hit_info);
return hit_info.res;
}
return res;
}
lv_coord_t lv_clamp_width(lv_coord_t width, lv_coord_t min_width, lv_coord_t max_width, lv_coord_t ref_width)
{
if(LV_COORD_IS_PCT(min_width)) min_width = (ref_width * LV_COORD_GET_PCT(min_width)) / 100;
if(LV_COORD_IS_PCT(max_width)) max_width = (ref_width * LV_COORD_GET_PCT(max_width)) / 100;
return LV_CLAMP(min_width, width, max_width);
}
lv_coord_t lv_clamp_height(lv_coord_t height, lv_coord_t min_height, lv_coord_t max_height, lv_coord_t ref_height)
{
if(LV_COORD_IS_PCT(min_height)) min_height = (ref_height * LV_COORD_GET_PCT(min_height)) / 100;
if(LV_COORD_IS_PCT(max_height)) max_height = (ref_height * LV_COORD_GET_PCT(max_height)) / 100;
return LV_CLAMP(min_height, height, max_height);
}
/**********************
* STATIC FUNCTIONS
**********************/
static lv_coord_t calc_content_width(lv_obj_t * obj)
{
lv_obj_scroll_to_x(obj, 0, LV_ANIM_OFF);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_coord_t pad_right = lv_obj_get_style_pad_right(obj, LV_PART_MAIN) + border_width;
lv_coord_t pad_left = lv_obj_get_style_pad_left(obj, LV_PART_MAIN) + border_width;
lv_coord_t self_w;
self_w = lv_obj_get_self_width(obj) + pad_left + pad_right;
lv_coord_t child_res = LV_COORD_MIN;
uint32_t i;
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
/*With RTL find the left most coordinate*/
if(lv_obj_get_style_base_dir(obj, LV_PART_MAIN) == LV_BASE_DIR_RTL) {
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
if(lv_obj_has_flag_any(child, LV_OBJ_FLAG_HIDDEN | LV_OBJ_FLAG_FLOATING)) continue;
if(!lv_obj_is_layout_positioned(child)) {
lv_align_t align = lv_obj_get_style_align(child, 0);
switch(align) {
case LV_ALIGN_DEFAULT:
case LV_ALIGN_TOP_RIGHT:
case LV_ALIGN_BOTTOM_RIGHT:
case LV_ALIGN_RIGHT_MID:
/*Normal right aligns. Other are ignored due to possible circular dependencies*/
child_res = LV_MAX(child_res, obj->coords.x2 - child->coords.x1 + 1);
break;
default:
/* Consider other cases only if x=0 and use the width of the object.
* With x!=0 circular dependency could occur. */
if(lv_obj_get_style_x(child, 0) == 0) {
child_res = LV_MAX(child_res, lv_area_get_width(&child->coords) + pad_right);
}
}
}
else {
child_res = LV_MAX(child_res, obj->coords.x2 - child->coords.x1 + 1);
}
}
if(child_res != LV_COORD_MIN) {
child_res += pad_left;
}
}
/*Else find the right most coordinate*/
else {
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
if(lv_obj_has_flag_any(child, LV_OBJ_FLAG_HIDDEN | LV_OBJ_FLAG_FLOATING)) continue;
if(!lv_obj_is_layout_positioned(child)) {
lv_align_t align = lv_obj_get_style_align(child, 0);
switch(align) {
case LV_ALIGN_DEFAULT:
case LV_ALIGN_TOP_LEFT:
case LV_ALIGN_BOTTOM_LEFT:
case LV_ALIGN_LEFT_MID:
/*Normal left aligns.*/
child_res = LV_MAX(child_res, child->coords.x2 - obj->coords.x1 + 1);
break;
default:
/* Consider other cases only if x=0 and use the width of the object.
* With x!=0 circular dependency could occur. */
if(lv_obj_get_style_y(child, 0) == 0) {
child_res = LV_MAX(child_res, lv_area_get_width(&child->coords) + pad_left);
}
}
}
else {
child_res = LV_MAX(child_res, child->coords.x2 - obj->coords.x1 + 1);
}
}
if(child_res != LV_COORD_MIN) {
child_res += pad_right;
}
}
if(child_res == LV_COORD_MIN) return self_w;
else return LV_MAX(child_res, self_w);
}
static lv_coord_t calc_content_height(lv_obj_t * obj)
{
lv_obj_scroll_to_y(obj, 0, LV_ANIM_OFF);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_coord_t pad_top = lv_obj_get_style_pad_top(obj, LV_PART_MAIN) + border_width;
lv_coord_t pad_bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_MAIN) + border_width;
lv_coord_t self_h;
self_h = lv_obj_get_self_height(obj) + pad_top + pad_bottom;
lv_coord_t child_res = LV_COORD_MIN;
uint32_t i;
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
if(lv_obj_has_flag_any(child, LV_OBJ_FLAG_HIDDEN | LV_OBJ_FLAG_FLOATING)) continue;
if(!lv_obj_is_layout_positioned(child)) {
lv_align_t align = lv_obj_get_style_align(child, 0);
switch(align) {
case LV_ALIGN_DEFAULT:
case LV_ALIGN_TOP_RIGHT:
case LV_ALIGN_TOP_MID:
case LV_ALIGN_TOP_LEFT:
/*Normal top aligns. */
child_res = LV_MAX(child_res, child->coords.y2 - obj->coords.y1 + 1);
break;
default:
/* Consider other cases only if y=0 and use the height of the object.
* With y!=0 circular dependency could occur. */
if(lv_obj_get_style_y(child, 0) == 0) {
child_res = LV_MAX(child_res, lv_area_get_height(&child->coords) + pad_top);
}
break;
}
}
else {
child_res = LV_MAX(child_res, child->coords.y2 - obj->coords.y1 + 1);
}
}
if(child_res != LV_COORD_MIN) {
child_res += pad_bottom;
return LV_MAX(child_res, self_h);
}
else {
return self_h;
}
}
static void layout_update_core(lv_obj_t * obj)
{
uint32_t i;
uint32_t child_cnt = lv_obj_get_child_cnt(obj);
for(i = 0; i < child_cnt; i++) {
lv_obj_t * child = obj->spec_attr->children[i];
layout_update_core(child);
}
if(obj->layout_inv == 0) return;
obj->layout_inv = 0;
lv_obj_refr_size(obj);
lv_obj_refr_pos(obj);
if(child_cnt > 0) {
uint32_t layout_id = lv_obj_get_style_layout(obj, LV_PART_MAIN);
if(layout_id > 0 && layout_id <= layout_cnt) {
void * user_data = LV_GC_ROOT(_lv_layout_list)[layout_id - 1].user_data;
LV_GC_ROOT(_lv_layout_list)[layout_id - 1].cb(obj, user_data);
}
}
}
Reference in New Issue View Git Blame Copy Permalink