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hekate/bdk/libs/lvgl/lv_objx/lv_page.c
CTCaer 185526d134 Introducing Bootloader Development Kit (BDK) 
BDK will allow developers to use the full collection of drivers,
with limited editing, if any, for making payloads for Nintendo Switch.

Using a single source for everything will also help decoupling
Switch specific code and easily port it to other Tegra X1/X1+ platforms.
And maybe even to lower targets.

Everything is now centrilized into bdk folder.
Every module or project can utilize it by simply including it.

This is just the start and it will continue to improve.
2020-06-14 15:25:21 +03:00

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/*
* Copyright (c) 2019 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file lv_page.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../lv_objx/lv_page.h"
#if USE_LV_PAGE != 0
#include "../lv_core/lv_group.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_themes/lv_theme.h"
#include "../lv_core/lv_refr.h"
#include "../lv_misc/lv_anim.h"
#include "../lv_misc/lv_math.h"
/*********************
* DEFINES
*********************/
#define LV_PAGE_SB_MIN_SIZE (LV_DPI / 8)
#define LV_PAGE_SCROLL_ANIM_TIME 200 /*[ms] Scroll anim time on `lv_page_scroll_up/down/left/rigth`*/
#define LV_PAGE_END_FLASH_SIZE (LV_DPI / 4)
#define LV_PAGE_END_ANIM_TIME 300
#define LV_PAGE_END_ANIM_WAIT_TIME 300
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_page_sb_refresh(lv_obj_t * page);
static bool lv_page_design(lv_obj_t * page, const lv_area_t * mask, lv_design_mode_t mode);
static bool lv_scrl_design(lv_obj_t * scrl, const lv_area_t * mask, lv_design_mode_t mode);
static lv_res_t lv_page_signal(lv_obj_t * page, lv_signal_t sign, void * param);
static lv_res_t lv_page_scrollable_signal(lv_obj_t * scrl, lv_signal_t sign, void * param);
#if USE_LV_ANIMATION
static void edge_flash_anim(void * page, int32_t v);
static void edge_flash_anim_end(void * page);
#endif
/**********************
* STATIC VARIABLES
**********************/
static lv_design_func_t ancestor_design;
static lv_signal_func_t ancestor_signal;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a page objects
* @param par pointer to an object, it will be the parent of the new page
* @param copy pointer to a page object, if not NULL then the new object will be copied from it
* @return pointer to the created page
*/
lv_obj_t * lv_page_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("page create started");
/*Create the ancestor object*/
lv_obj_t * new_page = lv_cont_create(par, copy);
lv_mem_assert(new_page);
if(new_page == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_page);
if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_func(new_page);
/*Allocate the object type specific extended data*/
lv_page_ext_t * ext = lv_obj_allocate_ext_attr(new_page, sizeof(lv_page_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
ext->scrl = NULL;
ext->pr_action = NULL;
ext->rel_action = NULL;
ext->sb.hor_draw = 0;
ext->sb.ver_draw = 0;
ext->bgo = NULL;
ext->pr = NULL;
ext->sb.style = &lv_style_pretty;
ext->sb.mode = LV_SB_MODE_AUTO;
ext->edge_flash.enabled = 0;
ext->edge_flash.bottom_ip = 0;
ext->edge_flash.top_ip = 0;
ext->edge_flash.left_ip = 0;
ext->edge_flash.right_ip = 0;
ext->edge_flash.state = 0;
ext->edge_flash.style = &lv_style_plain_color;
ext->arrow_scroll = 0;
ext->scroll_prop = 0;
ext->scroll_prop_ip = 0;
/*Init the new page object*/
if(copy == NULL) {
ext->scrl = lv_cont_create(new_page, NULL);
lv_obj_set_signal_func(ext->scrl, lv_page_scrollable_signal);
lv_obj_set_design_func(ext->scrl, lv_scrl_design);
lv_obj_set_drag(ext->scrl, true);
lv_obj_set_drag_throw(ext->scrl, true);
lv_obj_set_protect(ext->scrl, LV_PROTECT_PARENT | LV_PROTECT_PRESS_LOST);
lv_cont_set_fit(ext->scrl, false, true);
/* Add the signal function only if 'scrolling' is created
* because everything has to be ready before any signal is received*/
lv_obj_set_signal_func(new_page, lv_page_signal);
lv_obj_set_design_func(new_page, lv_page_design);
lv_page_set_sb_mode(new_page, ext->sb.mode);
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
if(par == NULL) { /*Different styles if it is screen*/
lv_page_set_style(new_page, LV_PAGE_STYLE_BG, th->bg);
lv_page_set_style(new_page, LV_PAGE_STYLE_SCRL, &lv_style_transp);
} else {
lv_page_set_style(new_page, LV_PAGE_STYLE_BG, th->page.bg);
lv_page_set_style(new_page, LV_PAGE_STYLE_SCRL, th->page.scrl);
}
lv_page_set_style(new_page, LV_PAGE_STYLE_SB, th->page.sb);
} else {
lv_page_set_style(new_page, LV_PAGE_STYLE_BG, &lv_style_pretty_color);
lv_page_set_style(new_page, LV_PAGE_STYLE_SCRL, &lv_style_pretty);
lv_page_set_style(new_page, LV_PAGE_STYLE_SB, &lv_style_pretty_color);
}
} else {
lv_page_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->scrl = lv_cont_create(new_page, copy_ext->scrl);
ext->bgo = lv_page_get_style(copy, LV_PAGE_STYLE_BGO);
ext->pr = lv_page_get_style(copy, LV_PAGE_STYLE_PR);
lv_obj_set_signal_func(ext->scrl, lv_page_scrollable_signal);
lv_page_set_pr_action(new_page, copy_ext->pr_action);
lv_page_set_rel_action(new_page, copy_ext->rel_action);
lv_page_set_sb_mode(new_page, copy_ext->sb.mode);
lv_page_set_arrow_scroll(new_page, copy_ext->arrow_scroll);
lv_page_set_style(new_page, LV_PAGE_STYLE_BG, lv_page_get_style(copy, LV_PAGE_STYLE_BG));
lv_page_set_style(new_page, LV_PAGE_STYLE_SCRL, lv_page_get_style(copy, LV_PAGE_STYLE_SCRL));
lv_page_set_style(new_page, LV_PAGE_STYLE_SB, lv_page_get_style(copy, LV_PAGE_STYLE_SB));
/* Add the signal function only if 'scrolling' is created
* because everything has to be ready before any signal is received*/
lv_obj_set_signal_func(new_page, lv_page_signal);
lv_obj_set_design_func(new_page, lv_page_design);
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_page);
}
lv_page_sb_refresh(new_page);
LV_LOG_INFO("page created");
return new_page;
}
/**
* Delete all children of the scrl object, without deleting scrl child.
* @param obj pointer to an object
*/
void lv_page_clean(lv_obj_t * obj)
{
lv_obj_t * scrl = lv_page_get_scrl(obj);
lv_obj_clean(scrl);
}
/*=====================
* Setter functions
*====================*/
/**
* Set a release action for the page
* @param page pointer to a page object
* @param rel_action a function to call when the page is release
*/
void lv_page_set_rel_action(lv_obj_t * page, lv_action_t rel_action)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->rel_action = rel_action;
}
/**
* Set a press action for the page
* @param page pointer to a page object
* @param pr_action a function to call when the page is pressed
*/
void lv_page_set_pr_action(lv_obj_t * page, lv_action_t pr_action)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->pr_action = pr_action;
}
/**
* Set the scroll bar mode on a page
* @param page pointer to a page object
* @param sb_mode the new mode from 'lv_page_sb.mode_t' enum
*/
void lv_page_set_sb_mode(lv_obj_t * page, lv_sb_mode_t sb_mode)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
if(ext->sb.mode == sb_mode) return;
if(sb_mode == LV_SB_MODE_HIDE) ext->sb.mode |= LV_SB_MODE_HIDE; /*Set the hidden flag*/
else if(sb_mode == LV_SB_MODE_UNHIDE) ext->sb.mode &= (~LV_SB_MODE_HIDE); /*Clear the hidden flag*/
else {
if(ext->sb.mode & LV_SB_MODE_HIDE) sb_mode |= LV_SB_MODE_HIDE;
ext->sb.mode = sb_mode;
}
ext->sb.hor_draw = 0;
ext->sb.ver_draw = 0;
lv_page_sb_refresh(page);
lv_obj_invalidate(page);
}
/**
* Enable/Disable scrolling with arrows if the page is in group (arrows: LV_GROUP_KEY_LEFT/RIGHT/UP/DOWN)
* @param page pointer to a page object
* @param en true: enable scrolling with arrows
*/
void lv_page_set_arrow_scroll(lv_obj_t * page, bool en)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->arrow_scroll = en ? 1 : 0;
}
/**
* Enable the scroll propagation feature. If enabled then the page will move its parent if there is no more space to scroll.
* @param page pointer to a Page
* @param en true or false to enable/disable scroll propagation
*/
void lv_page_set_scroll_propagation(lv_obj_t * page, bool en)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->scroll_prop = en ? 1 : 0;
}
/**
* Enable the edge flash effect. (Show an arc when the an edge is reached)
* @param page pointer to a Page
* @param en true or false to enable/disable end flash
*/
void lv_page_set_edge_flash(lv_obj_t * page, bool en)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->edge_flash.enabled = en ? 1 : 0;
}
/**
* Set a style of a page
* @param page pointer to a page object
* @param type which style should be set
* @param style pointer to a style
* */
void lv_page_set_style(lv_obj_t * page, lv_page_style_t type, lv_style_t * style)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
switch(type) {
case LV_PAGE_STYLE_BG:
lv_obj_set_style(page, style);
break;
case LV_PAGE_STYLE_BGO:
ext->bgo = style;
break;
case LV_PAGE_STYLE_PR:
ext->pr = style;
break;
case LV_PAGE_STYLE_SCRL:
lv_obj_set_style(ext->scrl, style);
break;
case LV_PAGE_STYLE_SB:
ext->sb.style = style;
lv_area_set_height(&ext->sb.hor_area, ext->sb.style->body.padding.inner);
lv_area_set_width(&ext->sb.ver_area, ext->sb.style->body.padding.inner);
lv_page_sb_refresh(page);
lv_obj_refresh_ext_size(page);
lv_obj_invalidate(page);
break;
case LV_PAGE_STYLE_EDGE_FLASH:
ext->edge_flash.style = style;
break;
}
}
/*=====================
* Getter functions
*====================*/
/**
* Get the scrollable object of a page
* @param page pointer to a page object
* @return pointer to a container which is the scrollable part of the page
*/
lv_obj_t * lv_page_get_scrl(const lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->scrl;
}
/**
* Get the press action of the page
* @param page pointer to a page object
* @return a function to call when the page is pressed
*/
lv_action_t lv_page_get_pr_action(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->pr_action;
}
/**
* Get the release action of the page
* @param page pointer to a page object
* @return a function to call when the page is released
*/
lv_action_t lv_page_get_rel_action(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->rel_action;
}
/**
* Set the scroll bar mode on a page
* @param page pointer to a page object
* @return the mode from 'lv_page_sb.mode_t' enum
*/
lv_sb_mode_t lv_page_get_sb_mode(const lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->sb.mode;
}
/**
* Get the the scrolling with arrows (LV_GROUP_KEY_LEFT/RIGHT/UP/DOWN) is enabled or not
* @param page pointer to a page object
* @return true: scrolling with arrows is enabled
*/
bool lv_page_get_arrow_scroll(const lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->arrow_scroll ? true : false;
}
/**
* Get the scroll propagation property
* @param page pointer to a Page
* @return true or false
*/
bool lv_page_get_scroll_propagation(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->scroll_prop == 0 ? false : true;
}
/**
* Get the edge flash effect property.
* @param page pointer to a Page
* return true or false
*/
bool lv_page_get_edge_flash(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->edge_flash.enabled == 0 ? false : true;
}
/**
* Get that width which can be set to the children to still not cause overflow (show scrollbars)
* @param page pointer to a page object
* @return the width which still fits into the page
*/
lv_coord_t lv_page_get_fit_width(lv_obj_t * page)
{
lv_style_t * bg_style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_style_t * scrl_style = lv_page_get_style(page, LV_PAGE_STYLE_SCRL);
return lv_obj_get_width(page) - 2 * (bg_style->body.padding.hor + scrl_style->body.padding.hor);
}
/**
* Get that height which can be set to the children to still not cause overflow (show scrollbars)
* @param page pointer to a page object
* @return the height which still fits into the page
*/
lv_coord_t lv_page_get_fit_height(lv_obj_t * page)
{
lv_style_t * bg_style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_style_t * scrl_style = lv_page_get_style(page, LV_PAGE_STYLE_SCRL);
return lv_obj_get_height(page) - 2 * (bg_style->body.padding.ver + scrl_style->body.padding.ver);
}
/**
* Get a style of a page
* @param page pointer to page object
* @param type which style should be get
* @return style pointer to a style
* */
lv_style_t * lv_page_get_style(const lv_obj_t * page, lv_page_style_t type)
{
lv_style_t * style = NULL;
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
switch(type) {
case LV_PAGE_STYLE_BG:
style = lv_obj_get_style(page);
break;
case LV_PAGE_STYLE_BGO:
style = ext->bgo;
break;
case LV_PAGE_STYLE_PR:
style = ext->pr;
break;
case LV_PAGE_STYLE_SCRL:
style = lv_obj_get_style(ext->scrl);
break;
case LV_PAGE_STYLE_SB:
style = ext->sb.style;
break;
case LV_PAGE_STYLE_EDGE_FLASH:
style = ext->edge_flash.style;
break;
default:
style = NULL;
break;
}
return style;
}
/*=====================
* Other functions
*====================*/
/**
* Glue the object to the page. After it the page can be moved (dragged) with this object too.
* @param obj pointer to an object on a page
* @param glue true: enable glue, false: disable glue
*/
void lv_page_glue_obj(lv_obj_t * obj, bool glue)
{
lv_obj_set_drag_parent(obj, glue);
lv_obj_set_drag(obj, glue);
}
/**
* Focus on an object. It ensures that the object will be visible on the page.
* @param page pointer to a page object
* @param obj pointer to an object to focus (must be on the page)
* @param anim_time scroll animation time in milliseconds (0: no animation)
*/
void lv_page_focus(lv_obj_t * page, const lv_obj_t * obj, uint16_t anim_time)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
#if USE_LV_ANIMATION == 0
anim_time = 0;
#else
/* Be sure there is no position changing animation in progress
* because it can overide the current changes*/
lv_anim_del(page, (lv_anim_fp_t)lv_obj_set_y);
lv_anim_del(page, (lv_anim_fp_t)lv_obj_set_pos);
lv_anim_del(ext->scrl, (lv_anim_fp_t)lv_obj_set_y);
lv_anim_del(ext->scrl, (lv_anim_fp_t)lv_obj_set_pos);
#endif
lv_style_t * style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_style_t * style_scrl = lv_page_get_style(page, LV_PAGE_STYLE_SCRL);
lv_coord_t obj_y = obj->coords.y1 - ext->scrl->coords.y1;
lv_coord_t obj_h = lv_obj_get_height(obj);
lv_coord_t scrlable_y = lv_obj_get_y(ext->scrl);
lv_coord_t page_h = lv_obj_get_height(page);
lv_coord_t top_err = -(scrlable_y + obj_y);
lv_coord_t bot_err = scrlable_y + obj_y + obj_h - page_h;
/*If obj is higher then the page focus where the "error" is smaller*/
/*Out of the page on the top*/
if((obj_h <= page_h && top_err > 0) ||
(obj_h > page_h && top_err < bot_err)) {
/*Calculate a new position and let some space above*/
scrlable_y = -(obj_y - style_scrl->body.padding.ver - style->body.padding.ver);
scrlable_y += style_scrl->body.padding.ver;
}
/*Out of the page on the bottom*/
else if((obj_h <= page_h && bot_err > 0) ||
(obj_h > page_h && top_err >= bot_err)) {
/*Calculate a new position and let some space below*/
scrlable_y = -(obj_y + style_scrl->body.padding.ver + style->body.padding.ver);
scrlable_y -= style_scrl->body.padding.ver;
scrlable_y += page_h - obj_h;
} else {
/*Already in focus*/
return;
}
if(anim_time == 0) {
lv_obj_set_y(ext->scrl, scrlable_y);
#if USE_LV_ANIMATION
} else {
lv_anim_t a;
a.act_time = 0;
a.start = lv_obj_get_y(ext->scrl);
a.end = scrlable_y;
a.time = anim_time;
a.end_cb = NULL;
a.playback = 0;
a.repeat = 0;
a.var = ext->scrl;
a.path = lv_anim_path_linear;
a.fp = (lv_anim_fp_t) lv_obj_set_y;
lv_anim_create(&a);
#endif
}
}
/**
* Scroll the page horizontally
* @param page pointer to a page object
* @param dist the distance to scroll (< 0: scroll right; > 0 scroll left)
*/
void lv_page_scroll_hor(lv_obj_t * page, lv_coord_t dist)
{
lv_obj_t * scrl = lv_page_get_scrl(page);
#if USE_LV_ANIMATION
lv_anim_t a;
a.var = scrl;
a.start = lv_obj_get_x(scrl);
a.end = a.start + dist;
a.fp = (lv_anim_fp_t)lv_obj_set_x;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = 0;
a.time = LV_PAGE_SCROLL_ANIM_TIME;
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
#else
lv_obj_set_x(scrl, lv_obj_get_x(scrl) + dist);
#endif
}
/**
* Scroll the page vertically
* @param page pointer to a page object
* @param dist the distance to scroll (< 0: scroll down; > 0 scroll up)
*/
void lv_page_scroll_ver(lv_obj_t * page, lv_coord_t dist)
{
lv_obj_t * scrl = lv_page_get_scrl(page);
#if USE_LV_ANIMATION
lv_anim_t a;
a.var = scrl;
a.start = lv_obj_get_y(scrl);
a.end = a.start + dist;
a.fp = (lv_anim_fp_t)lv_obj_set_y;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = 0;
a.time = LV_PAGE_SCROLL_ANIM_TIME;
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
#else
lv_obj_set_y(scrl, lv_obj_get_y(scrl) + dist);
#endif
}
/**
* Not intended to use directly by the user but by other object types internally.
* Start an edge flash animation. Exactly one `ext->edge_flash.xxx_ip` should be set
* @param page
*/
void lv_page_start_edge_flash(lv_obj_t * page)
{
#if USE_LV_ANIMATION
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
if(ext->edge_flash.enabled) {
lv_anim_t a;
a.var = page;
a.start = 0;
a.end = LV_PAGE_END_FLASH_SIZE;
a.fp = (lv_anim_fp_t)edge_flash_anim;
a.path = lv_anim_path_linear;
a.end_cb = edge_flash_anim_end;
a.act_time = 0;
a.time = LV_PAGE_END_ANIM_TIME;
a.playback = 1;
a.playback_pause = LV_PAGE_END_ANIM_WAIT_TIME;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
}
#endif
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the pages
* @param page 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_page_design(lv_obj_t * page, const lv_area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
return ancestor_design(page, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN) {
/*Draw without border*/
lv_style_t * style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_coord_t border_width_tmp = style->body.border.width;
style->body.border.width = 0;
lv_draw_rect(&page->coords, mask, style, lv_obj_get_opa_scale(page));
style->body.border.width = border_width_tmp;
} else if(mode == LV_DESIGN_DRAW_POST) { /*Draw the scroll bars finally*/
/*Draw only a border*/
lv_style_t * style = lv_page_get_style(page, LV_PAGE_STYLE_BG);
lv_coord_t shadow_width_tmp = style->body.shadow.width;
uint8_t empty_tmp = style->body.empty;
style->body.shadow.width = 0;
style->body.empty = 1;
lv_draw_rect(&page->coords, mask, style, lv_obj_get_opa_scale(page));
style->body.shadow.width = shadow_width_tmp;
style->body.empty = empty_tmp;
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
/*Draw the scrollbars*/
lv_area_t sb_area;
if(ext->sb.hor_draw && (ext->sb.mode & LV_SB_MODE_HIDE) == 0) {
/*Convert the relative coordinates to absolute*/
lv_area_copy(&sb_area, &ext->sb.hor_area);
sb_area.x1 += page->coords.x1;
sb_area.y1 += page->coords.y1;
sb_area.x2 += page->coords.x1;
sb_area.y2 += page->coords.y1;
lv_draw_rect(&sb_area, mask, ext->sb.style, lv_obj_get_opa_scale(page));
}
if(ext->sb.ver_draw && (ext->sb.mode & LV_SB_MODE_HIDE) == 0) {
/*Convert the relative coordinates to absolute*/
lv_area_copy(&sb_area, &ext->sb.ver_area);
sb_area.x1 += page->coords.x1;
sb_area.y1 += page->coords.y1;
sb_area.x2 += page->coords.x1;
sb_area.y2 += page->coords.y1;
lv_draw_rect(&sb_area, mask, ext->sb.style, lv_obj_get_opa_scale(page));
}
lv_coord_t page_w = lv_obj_get_width(page);
lv_coord_t page_h = lv_obj_get_height(page);
lv_area_t flash_area;
if(ext->edge_flash.top_ip) {
flash_area.x1 = page->coords.x1 - page_w;
flash_area.x2 = page->coords.x2 + page_w;
flash_area.y1 = page->coords.y1 - 3 * page_w + ext->edge_flash.state;
flash_area.y2 = page->coords.y1 + ext->edge_flash.state;
}
else if(ext->edge_flash.bottom_ip) {
flash_area.x1 = page->coords.x1 - page_w;
flash_area.x2 = page->coords.x2 + page_w;
flash_area.y1 = page->coords.y2 - ext->edge_flash.state;
flash_area.y2 = page->coords.y2 + 3 * page_w - ext->edge_flash.state;
}
else if(ext->edge_flash.right_ip) {
flash_area.x1 = page->coords.x2 - ext->edge_flash.state;
flash_area.x2 = page->coords.x2 + 3 * page_h - ext->edge_flash.state;
flash_area.y1 = page->coords.y1 - page_h;
flash_area.y2 = page->coords.y2 + page_h;
}
else if(ext->edge_flash.left_ip) {
flash_area.x1 = page->coords.x1 - 3 * page_h + ext->edge_flash.state;
flash_area.x2 = page->coords.x1 + ext->edge_flash.state;
flash_area.y1 = page->coords.y1 - page_h;
flash_area.y2 = page->coords.y2 + page_h;
}
if(ext->edge_flash.left_ip || ext->edge_flash.right_ip || ext->edge_flash.top_ip || ext->edge_flash.bottom_ip) {
lv_style_t flash_style;
lv_style_copy(&flash_style, ext->edge_flash.style);
flash_style.body.radius = LV_RADIUS_CIRCLE;
uint32_t opa = (flash_style.body.opa * ext->edge_flash.state) / LV_PAGE_END_FLASH_SIZE;
flash_style.body.opa = opa;
lv_draw_rect(&flash_area, mask, &flash_style, lv_obj_get_opa_scale(page));
}
}
return true;
}
/**
* Handle the drawing related tasks of the scrollable object
* @param scrl 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_scrl_design(lv_obj_t * scrl, const lv_area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
return ancestor_design(scrl, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN) {
#if USE_LV_GROUP
/* If the page is focused in a group and
* the background object is not visible (transparent or empty)
* then "activate" the style of the scrollable*/
lv_style_t * style_scrl_ori = lv_obj_get_style(scrl);
lv_obj_t * page = lv_obj_get_parent(scrl);
lv_style_t * style_page = lv_obj_get_style(page);
lv_group_t * g = lv_obj_get_group(page);
if((style_page->body.empty || style_page->body.opa == LV_OPA_TRANSP) && style_page->body.border.width == 0) { /*Is the background visible?*/
if(lv_group_get_focused(g) == page) {
lv_style_t * style_mod;
style_mod = lv_group_mod_style(g, style_scrl_ori);
scrl->style_p = style_mod; /*Temporally change the style to the activated */
}
}
#endif
ancestor_design(scrl, mask, mode);
#if USE_LV_GROUP
scrl->style_p = style_scrl_ori; /*Revert the style*/
#endif
} else if(mode == LV_DESIGN_DRAW_POST) {
ancestor_design(scrl, mask, mode);
}
return true;
}
/**
* Signal function of the page
* @param page pointer to a page 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_page_signal(lv_obj_t * page, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(page, sign, param);
if(res != LV_RES_OK) return res;
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
lv_style_t * style = lv_obj_get_style(page);
lv_obj_t * child;
if(sign == LV_SIGNAL_CHILD_CHG) { /*Automatically move children to the scrollable object*/
child = lv_obj_get_child(page, NULL);
while(child != NULL) {
if(lv_obj_is_protected(child, LV_PROTECT_PARENT) == false) {
lv_obj_t * tmp = child;
child = lv_obj_get_child(page, child); /*Get the next child before move this*/
lv_obj_set_parent(tmp, ext->scrl);
} else {
child = lv_obj_get_child(page, child);
}
}
} else if(sign == LV_SIGNAL_STYLE_CHG) {
/*If no hor_fit enabled set the scrollable's width to the page's width*/
if(lv_cont_get_hor_fit(ext->scrl) == false) {
lv_obj_set_width(ext->scrl, lv_obj_get_width(page) - 2 * style->body.padding.hor);
} else {
ext->scrl->signal_func(ext->scrl, LV_SIGNAL_CORD_CHG, &ext->scrl->coords);
}
/*The scrollbars are important only if they are visible now*/
if(ext->sb.hor_draw || ext->sb.ver_draw) lv_page_sb_refresh(page);
/*Refresh the ext. size because the scrollbars might be positioned out of the page*/
lv_obj_refresh_ext_size(page);
} else if(sign == LV_SIGNAL_CORD_CHG) {
/*Refresh the scrollbar and notify the scrl if the size is changed*/
if(ext->scrl != NULL && (lv_obj_get_width(page) != lv_area_get_width(param) ||
lv_obj_get_height(page) != lv_area_get_height(param))) {
/*If no hor_fit enabled set the scrollable's width to the page's width*/
if(lv_cont_get_hor_fit(ext->scrl) == false) {
lv_obj_set_width(ext->scrl, lv_obj_get_width(page) - 2 * style->body.padding.hor);
}
ext->scrl->signal_func(ext->scrl, LV_SIGNAL_CORD_CHG, &ext->scrl->coords);
/*The scrollbars are important only if they are visible now*/
if(ext->sb.hor_draw || ext->sb.ver_draw) lv_page_sb_refresh(page);
}
} else if(sign == LV_SIGNAL_PRESSED) {
if(ext->pr_action != NULL) {
res = ext->pr_action(page);
}
} else if(sign == LV_SIGNAL_RELEASED) {
if(lv_indev_is_dragging(lv_indev_get_act()) == false) {
if(ext->rel_action != NULL) {
res = ext->rel_action(page);
}
}
} else if(sign == LV_SIGNAL_REFR_EXT_SIZE) {
/*Ensure ext. size for the scrollbars if they are out of the page*/
if(page->ext_size < (-ext->sb.style->body.padding.hor)) page->ext_size = -ext->sb.style->body.padding.hor;
if(page->ext_size < (-ext->sb.style->body.padding.ver)) page->ext_size = -ext->sb.style->body.padding.ver;
} else if(sign == LV_SIGNAL_CONTROLL) {
uint32_t c = *((uint32_t *) param);
if((c == LV_GROUP_KEY_DOWN) && ext->arrow_scroll) {
lv_page_scroll_ver(page, - lv_obj_get_height(page) / 4);
} else if((c == LV_GROUP_KEY_UP) && ext->arrow_scroll) {
lv_page_scroll_ver(page, lv_obj_get_height(page) / 4);
} else if((c == LV_GROUP_KEY_RIGHT) && ext->arrow_scroll) {
/*If the page can be scrolled horizontally because it's not wide enough then scroll it vertically*/
if(lv_page_get_scrl_width(page) < lv_obj_get_width(page)) lv_page_scroll_ver(page, - lv_obj_get_height(page) / 4);
else lv_page_scroll_hor(page, - lv_obj_get_width(page) / 4);
} else if((c == LV_GROUP_KEY_LEFT) && ext->arrow_scroll) {
/*If the page can be scrolled horizontally because it's not wide enough then scroll it vertically*/
if(lv_page_get_scrl_width(page) < lv_obj_get_width(page)) lv_page_scroll_ver(page, lv_obj_get_height(page) / 4);
else lv_page_scroll_hor(page, lv_obj_get_width(page) / 4);
}
} else if(sign == LV_SIGNAL_GET_EDITABLE) {
bool * editable = (bool *)param;
*editable = lv_page_get_arrow_scroll(page);
} 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_page";
}
return res;
}
/**
* Signal function of the scrollable part of a page
* @param scrl pointer to the scrollable 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_page_scrollable_signal(lv_obj_t * scrl, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(scrl, sign, param);
if(res != LV_RES_OK) return res;
lv_obj_t * page = lv_obj_get_parent(scrl);
lv_style_t * page_style = lv_obj_get_style(page);
lv_page_ext_t * page_ext = lv_obj_get_ext_attr(page);
if(sign == LV_SIGNAL_CORD_CHG) {
/*Limit the position of the scrollable object to be always visible
* (Do not let its edge inner then its parent respective edge)*/
lv_coord_t new_x = lv_obj_get_x(scrl);
lv_coord_t new_y = lv_obj_get_y(scrl);
bool refr_x = false;
bool refr_y = false;
lv_area_t page_coords;
lv_area_t scrl_coords;
lv_obj_get_coords(scrl, &scrl_coords);
lv_obj_get_coords(page, &page_coords);
lv_area_t * ori_coords = (lv_area_t *) param;
lv_coord_t diff_x = scrl->coords.x1 - ori_coords->x1;
lv_coord_t diff_y = scrl->coords.y1 - ori_coords->y1;
lv_coord_t hpad = page_style->body.padding.hor;
lv_coord_t vpad = page_style->body.padding.ver;
lv_obj_t * page_parent = lv_obj_get_parent(page);
lv_indev_t * indev = lv_indev_get_act();
lv_point_t drag_vect;
lv_indev_get_vect(indev, &drag_vect);
/* Start the scroll propagation if there is drag vector on the indev, but the drag is not started yet
* and the scrollable is in a corner. It will enable the scroll propagation only when a new scroll begins and not
* when the scrollable is already being scrolled.*/
if(page_ext->scroll_prop && page_ext->scroll_prop_ip == 0 && lv_indev_is_dragging(indev) == false) {
if(((drag_vect.y > 0 && scrl_coords.y1 == page_coords.y1 + vpad) ||
(drag_vect.y < 0 && scrl_coords.y2 == page_coords.y2 - vpad)) &&
((drag_vect.x > 0 && scrl_coords.x1 == page_coords.x1 + hpad) ||
(drag_vect.x < 0 && scrl_coords.x2 == page_coords.x2 - hpad))) {
if(lv_obj_get_parent(page_parent) != NULL) { /*Do not propagate the scroll to a screen*/
page_ext->scroll_prop_ip = 1;
}
}
}
/*scrollable width smaller then page width? -> align to left*/
if(lv_area_get_width(&scrl_coords) + 2 * hpad <= lv_area_get_width(&page_coords)) {
if(scrl_coords.x1 != page_coords.x1 + hpad) {
new_x = hpad;
refr_x = true;
}
} else {
/*If the scroll propagation is in progress revert the original coordinates (don't let the page scroll)*/
if(page_ext->scroll_prop_ip) {
if(drag_vect.x == diff_x) { /*`scrl` is bouncing: drag pos. it somewhere and here it is reverted. Handle only the pos. because of drag*/
new_x = ori_coords->x1 - page_coords.x1;
refr_x = true;
}
}
/*The edges of the scrollable can not be in the page (minus hpad) */
else if(scrl_coords.x2 < page_coords.x2 - hpad) {
new_x = lv_area_get_width(&page_coords) - lv_area_get_width(&scrl_coords) - hpad; /* Right align */
refr_x = true;
if(page_ext->edge_flash.enabled &&
page_ext->edge_flash.left_ip == 0 && page_ext->edge_flash.right_ip == 0 &&
page_ext->edge_flash.top_ip == 0 && page_ext->edge_flash.bottom_ip == 0) {
lv_page_start_edge_flash(page);
page_ext->edge_flash.right_ip = 1;
}
}
else if(scrl_coords.x1 > page_coords.x1 + hpad) {
new_x = hpad; /*Left align*/
refr_x = true;
if(page_ext->edge_flash.enabled &&
page_ext->edge_flash.left_ip == 0 && page_ext->edge_flash.right_ip == 0 &&
page_ext->edge_flash.top_ip == 0 && page_ext->edge_flash.bottom_ip == 0) {
lv_page_start_edge_flash(page);
page_ext->edge_flash.left_ip = 1;
}
}
}
/*scrollable height smaller then page height? -> align to left*/
if(lv_area_get_height(&scrl_coords) + 2 * vpad <= lv_area_get_height(&page_coords)) {
if(scrl_coords.y1 != page_coords.y1 + vpad) {
new_y = vpad;
refr_y = true;
}
} else {
/*If the scroll propagation is in progress revert the original coordinates (don't let the page scroll)*/
if(page_ext->scroll_prop_ip) {
if(drag_vect.y == diff_y) { /*`scrl` is bouncing: drag pos. it somewhere and here it is reverted. Handle only the pos. because of drag*/
new_y = ori_coords->y1 - page_coords.y1;
refr_y = true;
}
}
/*The edges of the scrollable can not be in the page (minus vpad) */
else if(scrl_coords.y2 < page_coords.y2 - vpad) {
new_y = lv_area_get_height(&page_coords) - lv_area_get_height(&scrl_coords) - vpad; /* Bottom align */
refr_y = true;
if(page_ext->edge_flash.enabled &&
page_ext->edge_flash.left_ip == 0 && page_ext->edge_flash.right_ip == 0 &&
page_ext->edge_flash.top_ip == 0 && page_ext->edge_flash.bottom_ip == 0) {
lv_page_start_edge_flash(page);
page_ext->edge_flash.bottom_ip = 1;
}
}
else if(scrl_coords.y1 > page_coords.y1 + vpad) {
new_y = vpad; /*Top align*/
refr_y = true;
if(page_ext->edge_flash.enabled &&
page_ext->edge_flash.left_ip == 0 && page_ext->edge_flash.right_ip == 0 &&
page_ext->edge_flash.top_ip == 0 && page_ext->edge_flash.bottom_ip == 0) {
lv_page_start_edge_flash(page);
page_ext->edge_flash.top_ip = 1;
}
}
}
if(refr_x || refr_y) {
lv_obj_set_pos(scrl, new_x, new_y);
if(page_ext->scroll_prop_ip) {
if(refr_y) lv_obj_set_y(page_parent, lv_obj_get_y(page_parent) + diff_y);
if(refr_x) lv_obj_set_x(page_parent, lv_obj_get_x(page_parent) + diff_x);
}
}
lv_page_sb_refresh(page);
}
else if(sign == LV_SIGNAL_DRAG_END) {
/*Scroll propagation is finished on drag end*/
page_ext->scroll_prop_ip = 0;
/*Hide scrollbars if required*/
if(page_ext->sb.mode == LV_SB_MODE_DRAG) {
lv_area_t sb_area_tmp;
if(page_ext->sb.hor_draw) {
lv_area_copy(&sb_area_tmp, &page_ext->sb.hor_area);
sb_area_tmp.x1 += page->coords.x1;
sb_area_tmp.y1 += page->coords.y1;
sb_area_tmp.x2 += page->coords.x1;
sb_area_tmp.y2 += page->coords.y1;
lv_inv_area(&sb_area_tmp);
page_ext->sb.hor_draw = 0;
}
if(page_ext->sb.ver_draw) {
lv_area_copy(&sb_area_tmp, &page_ext->sb.ver_area);
sb_area_tmp.x1 += page->coords.x1;
sb_area_tmp.y1 += page->coords.y1;
sb_area_tmp.x2 += page->coords.x1;
sb_area_tmp.y2 += page->coords.y1;
lv_inv_area(&sb_area_tmp);
page_ext->sb.ver_draw = 0;
}
}
} else if(sign == LV_SIGNAL_PRESSED) {
if(page_ext->pr_action != NULL) {
res = page_ext->pr_action(page);
}
} else if(sign == LV_SIGNAL_RELEASED) {
if(lv_indev_is_dragging(lv_indev_get_act()) == false) {
if(page_ext->rel_action != NULL) {
res = page_ext->rel_action(page);
}
}
}
return res;
}
/**
* Refresh the position and size of the scroll bars.
* @param page pointer to a page object
*/
static void lv_page_sb_refresh(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
lv_style_t * style = lv_obj_get_style(page);
lv_obj_t * scrl = ext->scrl;
lv_coord_t size_tmp;
lv_coord_t scrl_w = lv_obj_get_width(scrl);
lv_coord_t scrl_h = lv_obj_get_height(scrl);
lv_coord_t hpad = style->body.padding.hor;
lv_coord_t vpad = style->body.padding.ver;
lv_coord_t obj_w = lv_obj_get_width(page);
lv_coord_t obj_h = lv_obj_get_height(page);
/*Always let 'scrollbar width' padding above, under, left and right to the scrollbars
* else:
* - horizontal and vertical scrollbars can overlap on the corners
* - if the page has radius the scrollbar can be out of the radius */
lv_coord_t sb_hor_pad = LV_MATH_MAX(ext->sb.style->body.padding.inner, style->body.padding.hor);
lv_coord_t sb_ver_pad = LV_MATH_MAX(ext->sb.style->body.padding.inner, style->body.padding.ver);
if(ext->sb.mode == LV_SB_MODE_OFF) return;
if(ext->sb.mode == LV_SB_MODE_ON) {
ext->sb.hor_draw = 1;
ext->sb.ver_draw = 1;
}
/*Invalidate the current (old) scrollbar areas*/
lv_area_t sb_area_tmp;
if(ext->sb.hor_draw != 0) {
lv_area_copy(&sb_area_tmp, &ext->sb.hor_area);
sb_area_tmp.x1 += page->coords.x1;
sb_area_tmp.y1 += page->coords.y1;
sb_area_tmp.x2 += page->coords.x1;
sb_area_tmp.y2 += page->coords.y1;
lv_inv_area(&sb_area_tmp);
}
if(ext->sb.ver_draw != 0) {
lv_area_copy(&sb_area_tmp, &ext->sb.ver_area);
sb_area_tmp.x1 += page->coords.x1;
sb_area_tmp.y1 += page->coords.y1;
sb_area_tmp.x2 += page->coords.x1;
sb_area_tmp.y2 += page->coords.y1;
lv_inv_area(&sb_area_tmp);
}
if(ext->sb.mode == LV_SB_MODE_DRAG && lv_indev_is_dragging(lv_indev_get_act()) == false) {
ext->sb.hor_draw = 0;
ext->sb.ver_draw = 0;
return;
}
/*Horizontal scrollbar*/
if(scrl_w <= obj_w - 2 * hpad) { /*Full sized scroll bar*/
lv_area_set_width(&ext->sb.hor_area, obj_w - 2 * sb_hor_pad);
lv_area_set_pos(&ext->sb.hor_area, sb_hor_pad, obj_h - ext->sb.style->body.padding.inner - ext->sb.style->body.padding.ver);
if(ext->sb.mode == LV_SB_MODE_AUTO || ext->sb.mode == LV_SB_MODE_DRAG) ext->sb.hor_draw = 0;
} else {
size_tmp = (obj_w * (obj_w - (2 * sb_hor_pad))) / (scrl_w + 2 * hpad);
if(size_tmp < LV_PAGE_SB_MIN_SIZE) size_tmp = LV_PAGE_SB_MIN_SIZE;
lv_area_set_width(&ext->sb.hor_area, size_tmp);
lv_area_set_pos(&ext->sb.hor_area, sb_hor_pad +
(-(lv_obj_get_x(scrl) - hpad) * (obj_w - size_tmp - 2 * sb_hor_pad)) /
(scrl_w + 2 * hpad - obj_w),
obj_h - ext->sb.style->body.padding.inner - ext->sb.style->body.padding.ver);
if(ext->sb.mode == LV_SB_MODE_AUTO || ext->sb.mode == LV_SB_MODE_DRAG) ext->sb.hor_draw = 1;
}
/*Vertical scrollbar*/
if(scrl_h <= obj_h - 2 * vpad) { /*Full sized scroll bar*/
lv_area_set_height(&ext->sb.ver_area, obj_h - 2 * sb_ver_pad);
lv_area_set_pos(&ext->sb.ver_area, obj_w - ext->sb.style->body.padding.inner - ext->sb.style->body.padding.hor, sb_ver_pad);
if(ext->sb.mode == LV_SB_MODE_AUTO || ext->sb.mode == LV_SB_MODE_DRAG) ext->sb.ver_draw = 0;
} else {
size_tmp = (obj_h * (obj_h - (2 * sb_ver_pad))) / (scrl_h + 2 * vpad);
if(size_tmp < LV_PAGE_SB_MIN_SIZE) size_tmp = LV_PAGE_SB_MIN_SIZE;
lv_area_set_height(&ext->sb.ver_area, size_tmp);
lv_area_set_pos(&ext->sb.ver_area, obj_w - ext->sb.style->body.padding.inner - ext->sb.style->body.padding.hor,
sb_ver_pad +
(-(lv_obj_get_y(scrl) - vpad) * (obj_h - size_tmp - 2 * sb_ver_pad)) /
(scrl_h + 2 * vpad - obj_h));
if(ext->sb.mode == LV_SB_MODE_AUTO || ext->sb.mode == LV_SB_MODE_DRAG) ext->sb.ver_draw = 1;
}
/*Invalidate the new scrollbar areas*/
if(ext->sb.hor_draw != 0) {
lv_area_copy(&sb_area_tmp, &ext->sb.hor_area);
sb_area_tmp.x1 += page->coords.x1;
sb_area_tmp.y1 += page->coords.y1;
sb_area_tmp.x2 += page->coords.x1;
sb_area_tmp.y2 += page->coords.y1;
lv_inv_area(&sb_area_tmp);
}
if(ext->sb.ver_draw != 0) {
lv_area_copy(&sb_area_tmp, &ext->sb.ver_area);
sb_area_tmp.x1 += page->coords.x1;
sb_area_tmp.y1 += page->coords.y1;
sb_area_tmp.x2 += page->coords.x1;
sb_area_tmp.y2 += page->coords.y1;
lv_inv_area(&sb_area_tmp);
}
}
#if USE_LV_ANIMATION
static void edge_flash_anim(void * page, int32_t v)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->edge_flash.state = v;
lv_obj_invalidate(page);
}
static void edge_flash_anim_end(void * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->edge_flash.top_ip = 0;
ext->edge_flash.bottom_ip = 0;
ext->edge_flash.left_ip = 0;
ext->edge_flash.right_ip = 0;
lv_obj_invalidate(page);
}
#endif
#endif
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