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lvgl/lv_objx/lv_win.c
Gabor Kiss-Vamosi a11957d0b4 new font and anti-alising system release for test
2018-02-23 13:56:32 +01:00

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/**
* @file lv_win.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../../lv_conf.h"
#if USE_LV_WIN != 0
#include "lv_win.h"
#include "../lv_themes/lv_theme.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_res_t lv_win_signal(lv_obj_t * win, lv_signal_t sign, void * param);
static void lv_win_realign(lv_obj_t * win);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_func_t ancestor_signal;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a window objects
* @param par pointer to an object, it will be the parent of the new window
* @param copy pointer to a window object, if not NULL then the new object will be copied from it
* @return pointer to the created window
*/
lv_obj_t * lv_win_create(lv_obj_t * par, lv_obj_t * copy)
{
/*Create the ancestor object*/
lv_obj_t * new_win = lv_obj_create(par, copy);
lv_mem_assert(new_win);
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_win);
/*Allocate the object type specific extended data*/
lv_win_ext_t * ext = lv_obj_allocate_ext_attr(new_win, sizeof(lv_win_ext_t));
lv_mem_assert(ext);
ext->page = NULL;
ext->header = NULL;
ext->title = NULL;
ext->style_header = &lv_style_plain_color;
ext->style_btn_rel = &lv_style_btn_rel;
ext->style_btn_pr = &lv_style_btn_pr;
ext->btn_size = ( LV_DPI) / 2;
/*Init the new window object*/
if(copy == NULL) {
lv_obj_set_size(new_win, LV_HOR_RES, LV_VER_RES);
lv_obj_set_pos(new_win, 0, 0);
lv_obj_set_style(new_win, &lv_style_pretty);
ext->page = lv_page_create(new_win, NULL);
lv_obj_set_protect(ext->page, LV_PROTECT_PARENT);
lv_page_set_sb_mode(ext->page, LV_SB_MODE_AUTO);
/*Create a holder for the header*/
ext->header = lv_obj_create(new_win, NULL);
/*Move back the header because it is automatically moved to the scrollable */
lv_obj_set_protect(ext->header, LV_PROTECT_PARENT);
lv_obj_set_parent(ext->header, new_win);
/*Create a title on the header*/
ext->title = lv_label_create(ext->header, NULL);
lv_label_set_text(ext->title,"My title");
/*Set the default styles*/
lv_theme_t *th = lv_theme_get_current();
if(th) {
lv_win_set_style(new_win, LV_WIN_STYLE_BG, th->win.bg);
lv_win_set_style(new_win, LV_WIN_STYLE_SB, th->win.sb);
lv_win_set_style(new_win, LV_WIN_STYLE_HEADER, th->win.header);
lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_BG, th->win.content.bg);
lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_SCRL, th->win.content.scrl);
lv_win_set_style(new_win, LV_WIN_STYLE_BTN_REL, th->win.btn.rel);
lv_win_set_style(new_win, LV_WIN_STYLE_BTN_PR, th->win.btn.pr);
} else {
lv_win_set_style(new_win, LV_WIN_STYLE_BG, &lv_style_plain);
lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_BG, &lv_style_transp);
lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_SCRL, &lv_style_transp);
lv_win_set_style(new_win, LV_WIN_STYLE_HEADER, &lv_style_plain_color);
}
lv_obj_set_signal_func(new_win, lv_win_signal);
lv_obj_set_size(new_win, LV_HOR_RES, LV_VER_RES);
}
/*Copy an existing object*/
else {
lv_win_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
/*Create the objects*/
ext->header = lv_obj_create(new_win, copy_ext->header);
ext->title = lv_label_create(ext->header, copy_ext->title);
ext->page = lv_page_create(new_win, copy_ext->page);
ext->btn_size = copy_ext->btn_size;
/*Copy the control buttons*/
lv_obj_t * child;
lv_obj_t * cbtn;
child = lv_obj_get_child_back(copy_ext->header, NULL);
child = lv_obj_get_child_back(copy_ext->header, child); /*Sip the title*/
while(child != NULL) {
cbtn = lv_btn_create(ext->header, child);
lv_img_create(cbtn, lv_obj_get_child(child, NULL));
child = lv_obj_get_child_back(copy_ext->header, child);
}
lv_obj_set_signal_func(new_win, lv_win_signal);
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_win);
}
lv_win_realign(new_win);
return new_win;
}
/*======================
* Add/remove functions
*=====================*/
/**
* Add control button to the header of the window
* @param win pointer to a window object
* @param img_src an image source ('lv_img_t' variable, path to file or a symbol)
* @param rel_action a function pointer to call when the button is released
* @return pointer to the created button object
*/
lv_obj_t * lv_win_add_btn(lv_obj_t * win, const void * img_src, lv_action_t rel_action)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
lv_obj_t *btn = lv_btn_create(ext->header, NULL);
lv_btn_set_style(btn, LV_BTN_STYLE_REL, ext->style_btn_rel);
lv_btn_set_style(btn, LV_BTN_STYLE_PR, ext->style_btn_pr);
lv_obj_set_size(btn, ext->btn_size, ext->btn_size);
lv_btn_set_action(btn, LV_BTN_ACTION_CLICK, rel_action);
lv_obj_t * img = lv_img_create(btn, NULL);
lv_obj_set_click(img, false);
lv_img_set_src(img, img_src);
lv_win_realign(win);
return btn;
}
/*=====================
* Setter functions
*====================*/
/**
* A release action which can be assigned to a window control button to close it
* @param btn pointer to the released button
* @return always LV_ACTION_RES_INV because the button is deleted with the window
*/
lv_res_t lv_win_close_action(lv_obj_t * btn)
{
lv_obj_t * win = lv_win_get_from_btn(btn);
lv_obj_del(win);
return LV_RES_INV;
}
/**
* Set the title of a window
* @param win pointer to a window object
* @param title string of the new title
*/
void lv_win_set_title(lv_obj_t * win, const char * title)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
lv_label_set_text(ext->title, title);
lv_win_realign(win);
}
/**
* Set the control button size of a window
* @param win pointer to a window object
* @param size control button size
*/
void lv_win_set_btn_size(lv_obj_t * win, lv_coord_t size)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
ext->btn_size = size;
lv_win_realign(win);
}
/**
* Set the layout of the window
* @param win pointer to a window object
* @param layout the layout from 'lv_layout_t'
*/
void lv_win_set_layout(lv_obj_t *win, lv_layout_t layout)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
lv_page_set_scrl_layout(ext->page, layout);
}
/**
* Set the scroll bar mode of a window
* @param win pointer to a window object
* @param sb_mode the new scroll bar mode from 'lv_sb_mode_t'
*/
void lv_win_set_sb_mode(lv_obj_t *win, lv_sb_mode_t sb_mode)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
lv_page_set_sb_mode(ext->page, sb_mode);
}
/**
* Set a style of a window
* @param win pointer to a window object
* @param type which style should be set
* @param style pointer to a style
*/
void lv_win_set_style(lv_obj_t *win, lv_win_style_t type, lv_style_t *style)
{
lv_win_ext_t *ext = lv_obj_get_ext_attr(win);
switch (type) {
case LV_WIN_STYLE_BG:
lv_obj_set_style(win, style);
lv_win_realign(win);
break;
case LV_WIN_STYLE_CONTENT_BG:
lv_page_set_style(ext->page, LV_PAGE_STYLE_BG, style);
break;
case LV_WIN_STYLE_CONTENT_SCRL:
lv_page_set_style(ext->page, LV_PAGE_STYLE_SCRL, style);
break;
case LV_WIN_STYLE_SB:
lv_page_set_style(ext->page, LV_PAGE_STYLE_SB, style);
break;
case LV_WIN_STYLE_HEADER:
lv_obj_set_style(ext->header, style);
lv_win_realign(win);
break;
case LV_WIN_STYLE_BTN_REL:
ext->style_btn_rel = style;
break;
case LV_WIN_STYLE_BTN_PR:
ext->style_btn_pr = style;
break;
}
/*Refresh the existing buttons*/
if(type == LV_WIN_STYLE_BTN_REL || type == LV_WIN_STYLE_BTN_PR) {
lv_obj_t *btn;
btn = lv_obj_get_child_back(ext->header, NULL);
btn = lv_obj_get_child_back(ext->header, btn); /*Skip the title*/
while(btn != NULL) {
if(type == LV_WIN_STYLE_BTN_REL) lv_btn_set_style(btn, LV_BTN_STYLE_REL, style);
else lv_btn_set_style(btn, LV_BTN_STYLE_PR, style);
btn = lv_obj_get_child_back(ext->header, btn);
}
}
}
/*=====================
* Getter functions
*====================*/
/**
* Get the title of a window
* @param win pointer to a window object
* @return title string of the window
*/
const char * lv_win_get_title(lv_obj_t * win)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
return lv_label_get_text(ext->title);
}
/**
* Get the control button size of a window
* @param win pointer to a window object
* @return control button size
*/
lv_coord_t lv_win_get_btn_size(lv_obj_t * win)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
return ext->btn_size;
}
/**
* Get the layout of a window
* @param win pointer to a window object
* @return the layout of the window (from 'lv_layout_t')
*/
lv_layout_t lv_win_get_layout(lv_obj_t *win)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
return lv_page_get_scrl_layout(ext->page);
}
/**
* Get the scroll bar mode of a window
* @param win pointer to a window object
* @return the scroll bar mode of the window (from 'lv_sb_mode_t')
*/
lv_sb_mode_t lv_win_get_sb_mode(lv_obj_t *win)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
return lv_page_get_sb_mode(ext->page);
}
/**
* Get width of the content area (page scrollable) of the window
* @param win pointer to a window object
* @return the width of the content_bg area
*/
lv_coord_t lv_win_get_width(lv_obj_t * win)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
lv_obj_t * scrl = lv_page_get_scrl(ext->page);
lv_style_t * style_scrl = lv_obj_get_style(scrl);
return lv_obj_get_width(scrl) - 2 * style_scrl->body.padding.hor;
}
/**
* Get the pointer of a widow from one of its control button.
* It is useful in the action of the control buttons where only button is known.
* @param ctrl_btn pointer to a control button of a window
* @return pointer to the window of 'ctrl_btn'
*/
lv_obj_t * lv_win_get_from_btn(lv_obj_t * ctrl_btn)
{
lv_obj_t * header = lv_obj_get_parent(ctrl_btn);
lv_obj_t * win = lv_obj_get_parent(header);
return win;
}
/**
* Get a style of a window
* @param win pointer to a button object
* @param type which style window be get
* @return style pointer to a style
*/
lv_style_t * lv_win_get_style(lv_obj_t *win, lv_win_style_t type)
{
lv_win_ext_t *ext = lv_obj_get_ext_attr(win);
switch (type) {
case LV_WIN_STYLE_BG: return lv_obj_get_style(win);
case LV_WIN_STYLE_CONTENT_BG: return lv_page_get_style(ext->page, LV_PAGE_STYLE_BG);
case LV_WIN_STYLE_CONTENT_SCRL: return lv_page_get_style(ext->page, LV_PAGE_STYLE_SCRL);
case LV_WIN_STYLE_SB: return lv_page_get_style(ext->page, LV_PAGE_STYLE_SB);
case LV_WIN_STYLE_HEADER: return lv_obj_get_style(ext->header);
case LV_WIN_STYLE_BTN_REL: return ext->style_btn_rel;
case LV_WIN_STYLE_BTN_PR: return ext->style_btn_pr;
default: return NULL;
}
/*To avoid warning*/
return NULL;
}
/*=====================
* Other functions
*====================*/
/**
* Focus on an object. It ensures that the object will be visible in the window.
* @param win pointer to a window object
* @param obj pointer to an object to focus (must be in the window)
* @param anim_time scroll animation time in milliseconds (0: no animation)
*/
void lv_win_focus(lv_obj_t * win, lv_obj_t * obj, uint16_t anim_time)
{
lv_win_ext_t *ext = lv_obj_get_ext_attr(win);
lv_page_focus(ext->page, obj, anim_time);
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Signal function of the window
* @param win pointer to a window 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_win_signal(lv_obj_t * win, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(win, sign, param);
if(res != LV_RES_OK) return res;
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
if(sign == LV_SIGNAL_CHILD_CHG) { /*Move children to the page*/
lv_obj_t * page = ext->page;
if(page != NULL) {
lv_obj_t * child;
child = lv_obj_get_child(win, NULL);
while(child != NULL) {
if(lv_obj_is_protected(child, LV_PROTECT_PARENT) == false) {
lv_obj_t * tmp = child;
child = lv_obj_get_child(win, child); /*Get the next child before move this*/
lv_obj_set_parent(tmp, page);
} else {
child = lv_obj_get_child(win, child);
}
}
}
}
else if(sign == LV_SIGNAL_STYLE_CHG) {
lv_win_realign(win);
}
else if(sign == LV_SIGNAL_CORD_CHG) {
/*If the size is changed refresh the window*/
if(lv_area_get_width(param) != lv_obj_get_width(win) ||
lv_area_get_height(param) != lv_obj_get_height(win)) {
lv_win_realign(win);
}
}
else if(sign == LV_SIGNAL_CLEANUP) {
ext->header = NULL; /*These objects were children so they are already invalid*/
ext->page = NULL;
ext->title = NULL;
}
return res;
}
/**
* Realign the building elements of a window
* @param win pointer to window objectker
*/
static void lv_win_realign(lv_obj_t * win)
{
lv_win_ext_t * ext = lv_obj_get_ext_attr(win);
if(ext->page == NULL || ext->header == NULL || ext->title == NULL) return;
lv_style_t *header_style = lv_win_get_style(win, LV_WIN_STYLE_HEADER);
lv_obj_set_size(ext->header, lv_obj_get_width(win), ext->btn_size + 2 * header_style->body.padding.ver);
bool first_btn = true;
lv_obj_t *btn;
lv_obj_t *btn_prev = NULL;
/*Refresh the size of all control buttons*/
btn = lv_obj_get_child_back(ext->header, NULL);
btn = lv_obj_get_child_back(ext->header, btn); /*Skip the title*/
while(btn != NULL) {
lv_obj_set_size(btn, ext->btn_size, ext->btn_size);
if(first_btn) {
lv_obj_align(btn, ext->header, LV_ALIGN_IN_RIGHT_MID, - header_style->body.padding.hor, 0);
first_btn = false;
} else {
lv_obj_align(btn, btn_prev, LV_ALIGN_OUT_LEFT_MID, - header_style->body.padding.inner, 0);
}
btn_prev = btn;
btn = lv_obj_get_child_back(ext->header, btn);
}
lv_obj_align(ext->title, NULL, LV_ALIGN_IN_LEFT_MID, ext->style_header->body.padding.hor, 0);
lv_obj_set_pos(ext->header, 0, 0);
lv_obj_set_size( ext->page, lv_obj_get_width(win), lv_obj_get_height(win) - lv_obj_get_height(ext->header));
lv_obj_align( ext->page, ext->header, LV_ALIGN_OUT_BOTTOM_LEFT, 0, 0);
}
#endif
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