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lvgl/lv_objx/lv_page.c
Gabor Kiss-Vamosi f7baf2716a lv_list: api update
2017-11-07 14:31:35 +01:00

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/**
* @file lv_page.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_conf.h"
#if USE_LV_PAGE != 0
#include "misc/math/math_base.h"
#include "../lv_obj/lv_group.h"
#include "../lv_objx/lv_page.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_obj/lv_refr.h"
#include "misc/gfx/anim.h"
/*********************
* DEFINES
*********************/
#define LV_PAGE_SB_MIN_SIZE (LV_DPI / 8)
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_page_sb_refresh(lv_obj_t * main);
static bool lv_page_design(lv_obj_t * scrl, const area_t * mask, lv_design_mode_t mode);
static bool lv_scrl_design(lv_obj_t * scrl, const 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);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_func_t ancestor_signal;
static lv_design_func_t ancestor_design;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/*-----------------
* Create function
*-----------------*/
/**
* 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, lv_obj_t * copy)
{
/*Create the ancestor object*/
lv_obj_t * new_page = lv_cont_create(par, copy);
dm_assert(new_page);
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));
dm_assert(ext);
ext->scrl = NULL;
ext->pr_action = NULL;
ext->rel_action = NULL;
ext->sb.hor_draw = 0;
ext->sb.ver_draw = 0;
ext->sb.style = &lv_style_pretty;
ext->sb.mode = LV_PAGE_SB_MODE_AUTO;
/*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_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_style(new_page, &lv_style_pretty_color, &lv_style_pretty, &lv_style_pretty_color);
lv_page_set_sb_mode(new_page, ext->sb.mode);
} else {
lv_page_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->scrl = lv_cont_create(new_page, copy_ext->scrl);
lv_obj_set_signal_func(ext->scrl, lv_page_scrollable_signal);
lv_page_set_press_action(new_page, copy_ext->pr_action);
lv_page_set_release_action(new_page, copy_ext->rel_action);
lv_page_set_sb_mode(new_page, copy_ext->sb.mode);
lv_page_set_style(new_page, lv_obj_get_style(copy), lv_obj_get_style(copy_ext->scrl), copy_ext->sb.style);
/* 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);
return new_page;
}
/*=====================
* 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 released
*/
void lv_page_set_release_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_press_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_page_sb_mode_t sb_mode)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
ext->sb.mode = sb_mode;
ext->sb.hor_draw = 0;
ext->sb.ver_draw = 0;
lv_page_sb_refresh(page);
lv_obj_invalidate(page);
}
/**
* Set a new styles for the page
* @param page pointer to a page object
* @param bg pointer to a style for the background
* @param scrl pointer to a style for the scrollable area
* @param sb pointer to a style for the scroll bars
*/
void lv_page_set_style(lv_obj_t *page, lv_style_t *bg, lv_style_t *scrl, lv_style_t *sb)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
if(sb != NULL) {
ext->sb.style = sb;
area_set_height(&ext->sb.hor_area, ext->sb.style->body.padding.inner);
area_set_width(&ext->sb.ver_area, ext->sb.style->body.padding.inner);
lv_page_sb_refresh(page);
if(bg == NULL) {
/*If scrollbars are positioned out of page then ext. size is needed to draw it*/
/*Page's style change signal will handle it but if no bg. style specified do it manually*/
lv_obj_refresh_ext_size(page);
}
lv_obj_invalidate(page);
}
if(scrl != NULL) lv_obj_set_style(ext->scrl, scrl);
if(bg != NULL) lv_obj_set_style(page, bg);
}
/**
* 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, lv_obj_t * obj, uint16_t anim_time)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
lv_style_t * style = lv_page_get_style_bg(page);
lv_style_t * style_scrl = lv_page_get_style_scrl(page);
cord_t obj_y = obj->coords.y1 - ext->scrl->coords.y1;
cord_t obj_h = lv_obj_get_height(obj);
cord_t scrlable_y = lv_obj_get_y(ext->scrl);
cord_t page_h = lv_obj_get_height(page);
cord_t top_err = -(scrlable_y + obj_y);
cord_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;
scrlable_y += page_h - obj_h;
scrlable_y -= style_scrl->body.padding.ver;
} else {
/*Already in focus*/
return;
}
if(anim_time == 0) {
lv_obj_set_y(ext->scrl, scrlable_y);
}
else {
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 = anim_get_path(ANIM_PATH_LIN);
a.fp = (anim_fp_t) lv_obj_set_y;
anim_create(&a);
}
}
/*=====================
* 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(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->scrl;
}
/**
* 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_page_sb_mode_t lv_page_get_sb_mode(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->sb.mode;
}
/**
* Get the style of the scrollable part of a page
* @param page pointer to a page object
* @return pointer to the style of the scrollale part
*/
lv_style_t * lv_page_get_style_scrl(lv_obj_t * page)
{
return lv_obj_get_style(lv_page_get_scrl(page));
}
/**
* Get the style of the scrolbars of a page
* @param page pointer to a page object
* @return pointer to the style of the scrollbars
*/
lv_style_t * lv_page_get_style_sb(lv_obj_t * page)
{
lv_page_ext_t * ext = lv_obj_get_ext_attr(page);
return ext->sb.style;
}
/**********************
* 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 * scrl, const 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) {
ancestor_design(scrl, mask, mode);
} else if(mode == LV_DESIGN_DRAW_POST) { /*Draw the scroll bars finally*/
ancestor_design(scrl, mask, mode);
lv_page_ext_t * ext = lv_obj_get_ext_attr(scrl);
/*Draw the scrollbars*/
area_t sb_area;
if(ext->sb.hor_draw) {
/*Convert the relative coordinates to absolute*/
area_cpy(&sb_area, &ext->sb.hor_area);
sb_area.x1 += scrl->coords.x1;
sb_area.y1 += scrl->coords.y1;
sb_area.x2 += scrl->coords.x1;
sb_area.y2 += scrl->coords.y1;
lv_draw_rect(&sb_area, mask, ext->sb.style);
}
if(ext->sb.ver_draw) {
/*Convert the relative coordinates to absolute*/
area_cpy(&sb_area, &ext->sb.ver_area);
sb_area.x1 += scrl->coords.x1;
sb_area.y1 += scrl->coords.y1;
sb_area.x2 += scrl->coords.x1;
sb_area.y2 += scrl->coords.y1;
lv_draw_rect(&sb_area, mask, ext->sb.style);
}
}
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 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 LV_OBJ_GROUP != 0
/* If the page is the active in a group and
* the background (page) is not visible (transparent or empty)
* then activate the style of the scrollable*/
lv_style_t * style_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 != 0 || style_page->body.opa == OPA_TRANSP) { /*Background is visible?*/
if(lv_group_get_focused(g) == page) {
lv_style_t * style_mod;
style_mod = lv_group_mod_style(g, style_ori);
scrl->style_p = style_mod; /*Temporally change the style to the activated */
}
}
#endif
ancestor_design(scrl, mask, mode);
#if LV_OBJ_GROUP != 0
scrl->style_p = style_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);
/* The object can be deleted so check its validity and then
* make the object specific signal handling */
if(res == LV_RES_OK) {
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) != area_get_width(param) ||
lv_obj_get_height(page) != 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) {
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) {
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;
}
}
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);
/* The object can be deleted so check its validity and then
* make the object specific signal handling */
if(res != false) {
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) {
/*Be sure the width of the scrollable is correct*/
if(lv_cont_get_hor_fit(scrl) == false) {
lv_obj_set_width(scrl, lv_obj_get_width(page) - 2 * page_style->body.padding.hor);
}
/*Limit the position of the scrollable object to be always visible
* (Do not let its edge inner then its parent respective edge)*/
cord_t new_x;
cord_t new_y;
bool refr_x = false;
bool refr_y = false;
area_t page_cords;
area_t scrl_cords;
cord_t hpad = page_style->body.padding.hor;
cord_t vpad = page_style->body.padding.ver;
new_x = lv_obj_get_x(scrl);
new_y = lv_obj_get_y(scrl);
lv_obj_get_coords(scrl, &scrl_cords);
lv_obj_get_coords(page, &page_cords);
/*scrollable width smaller then page width? -> align to left*/
if(area_get_width(&scrl_cords) + 2 * hpad < area_get_width(&page_cords)) {
if(scrl_cords.x1 != page_cords.x1 + hpad) {
new_x = hpad;
refr_x = true;
}
} else {
/*The edges of the scrollable can not be in the page (minus hpad) */
if(scrl_cords.x2 < page_cords.x2 - hpad) {
new_x = area_get_width(&page_cords) - area_get_width(&scrl_cords) - hpad; /* Right align */
refr_x = true;
}
if (scrl_cords.x1 > page_cords.x1 + hpad) {
new_x = hpad; /*Left align*/
refr_x = true;
}
}
/*scrollable height smaller then page height? -> align to left*/
if(area_get_height(&scrl_cords) + 2 * vpad < area_get_height(&page_cords)) {
if(scrl_cords.y1 != page_cords.y1 + vpad) {
new_y = vpad;
refr_y = true;
}
} else {
/*The edges of the scrollable can not be in the page (minus vpad) */
if(scrl_cords.y2 < page_cords.y2 - vpad) {
new_y = area_get_height(&page_cords) - area_get_height(&scrl_cords) - vpad; /* Bottom align */
refr_y = true;
}
if (scrl_cords.y1 > page_cords.y1 + vpad) {
new_y = vpad; /*Top align*/
refr_y = true;
}
}
if(refr_x != false || refr_y != false) {
lv_obj_set_pos(scrl, new_x, new_y);
}
lv_page_sb_refresh(page);
}
else if(sign == LV_SIGNAL_DRAG_END) {
/*Hide scrollbars if required*/
if(page_ext->sb.mode == LV_PAGE_SB_MODE_DRAG) {
area_t sb_area_tmp;
if(page_ext->sb.hor_draw) {
area_cpy(&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.x2;
sb_area_tmp.y2 += page->coords.y2;
lv_inv_area(&sb_area_tmp);
page_ext->sb.hor_draw = 0;
}
if(page_ext->sb.ver_draw) {
area_cpy(&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.x2;
sb_area_tmp.y2 += page->coords.y2;
lv_inv_area(&sb_area_tmp);
page_ext->sb.ver_draw = 0;
}
}
}
else if(sign == LV_SIGNAL_PRESSED) {
if(page_ext->pr_action != NULL) {
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) {
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;
cord_t size_tmp;
cord_t scrl_w = lv_obj_get_width(scrl);
cord_t scrl_h = lv_obj_get_height(scrl);
cord_t hpad = style->body.padding.hor;
cord_t vpad = style->body.padding.ver;
cord_t obj_w = lv_obj_get_width(page);
cord_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 */
cord_t sb_hor_pad = MATH_MAX(ext->sb.style->body.padding.inner, style->body.padding.hor);
cord_t sb_ver_pad = MATH_MAX(ext->sb.style->body.padding.inner, style->body.padding.ver);
if(ext->sb.mode == LV_PAGE_SB_MODE_OFF) return;
if(ext->sb.mode == LV_PAGE_SB_MODE_ON) {
ext->sb.hor_draw = 1;
ext->sb.ver_draw = 1;
}
/*Invalidate the current (old) scrollbar areas*/
area_t sb_area_tmp;
if(ext->sb.hor_draw != 0) {
area_cpy(&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.x2;
sb_area_tmp.y2 += page->coords.y2;
lv_inv_area(&sb_area_tmp);
}
if(ext->sb.ver_draw != 0) {
area_cpy(&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.x2;
sb_area_tmp.y2 += page->coords.y2;
lv_inv_area(&sb_area_tmp);
}
if(ext->sb.mode == LV_PAGE_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*/
area_set_width(&ext->sb.hor_area, obj_w - 2 * sb_hor_pad);
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_PAGE_SB_MODE_AUTO || ext->sb.mode == LV_PAGE_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;
area_set_width(&ext->sb.hor_area, size_tmp);
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_PAGE_SB_MODE_AUTO || ext->sb.mode == LV_PAGE_SB_MODE_DRAG) ext->sb.hor_draw = 1;
}
/*Vertical scrollbar*/
if(scrl_h <= obj_h - 2 * vpad) { /*Full sized scroll bar*/
area_set_height(&ext->sb.ver_area, obj_h - 2 * sb_ver_pad);
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_PAGE_SB_MODE_AUTO || ext->sb.mode == LV_PAGE_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;
area_set_height(&ext->sb.ver_area, size_tmp);
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_PAGE_SB_MODE_AUTO || ext->sb.mode == LV_PAGE_SB_MODE_DRAG) ext->sb.ver_draw = 1;
}
/*Invalidate the new scrollbar areas*/
if(ext->sb.hor_draw != 0) {
area_cpy(&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.x2;
sb_area_tmp.y2 += page->coords.y2;
lv_inv_area(&sb_area_tmp);
}
if(ext->sb.ver_draw != 0) {
area_cpy(&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.x2;
sb_area_tmp.y2 += page->coords.y2;
lv_inv_area(&sb_area_tmp);
}
}
#endif
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