/**
* Handle the drawing related tasks of the sliders
* @param slider 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_slider_design(lv_obj_t * slider, const lv_area_t * mask, lv_design_mode_t mode)
{
/*Return false if the object is not covers the mask_p area*/
if(mode == LV_DESIGN_COVER_CHK) {
return false;
}
/*Draw the object*/
else if(mode == LV_DESIGN_DRAW_MAIN) {
lv_slider_ext_t * ext = lv_obj_get_ext_attr(slider);
lv_style_t * style_bg = lv_slider_get_style(slider, LV_SLIDER_STYLE_BG);
lv_style_t * style_knob = lv_slider_get_style(slider, LV_SLIDER_STYLE_KNOB);
lv_style_t * style_indic = lv_slider_get_style(slider, LV_SLIDER_STYLE_INDIC);
lv_coord_t slider_w = lv_area_get_width(&slider->coords);
lv_coord_t slider_h = lv_area_get_height(&slider->coords);
/*Draw the bar*/
lv_area_t area_bg;
lv_area_copy(&area_bg, &slider->coords);
/*Be sure at least LV_SLIDER_SIZE_MIN size will remain*/
lv_coord_t pad_ver_bg = style_bg->body.padding.ver;
lv_coord_t pad_hor_bg = style_bg->body.padding.hor;
if(pad_ver_bg * 2 + LV_SLIDER_SIZE_MIN > lv_area_get_height(&area_bg)) {
pad_ver_bg = (lv_area_get_height(&area_bg) - LV_SLIDER_SIZE_MIN) >> 1;
}
/**
* Signal function of the label
* @param label pointer to a label 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_label_signal(lv_obj_t * label, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(label, sign, param);
if(res != LV_RES_OK) return res;
lv_label_ext_t * ext = lv_obj_get_ext_attr(label);
if(sign == LV_SIGNAL_CLEANUP) {
if(ext->static_txt == 0) {
lv_mem_free(ext->text);
ext->text = NULL;
}
}
else if(sign == LV_SIGNAL_STYLE_CHG) {
/*Revert dots for proper refresh*/
lv_label_revert_dots(label);
lv_label_refr_text(label);
}
else if (sign == LV_SIGNAL_CORD_CHG) {
if(lv_area_get_width(&label->coords) != lv_area_get_width(param) ||
lv_area_get_height(&label->coords) != lv_area_get_height(param))
{
lv_label_revert_dots(label);
lv_label_refr_text(label);
}
}
else if(sign == LV_SIGNAL_REFR_EXT_SIZE) {
if(ext->body_draw) {
lv_style_t * style = lv_label_get_style(label);
label->ext_size = LV_MATH_MAX(label->ext_size, style->body.padding.hor);
label->ext_size = LV_MATH_MAX(label->ext_size, style->body.padding.ver);
}
}
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_label";
}
return res;
}
/**
* Signal function of the roller
* @param roller pointer to a roller 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_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * param)
{
lv_res_t res = LV_RES_OK;
/*Don't let the drop down list to handle the control signals. It works differently*/
if(sign != LV_SIGNAL_CONTROLL && sign != LV_SIGNAL_FOCUS && sign != LV_SIGNAL_DEFOCUS) {
/* Include the ancient signal function */
res = ancestor_signal(roller, sign, param);
if(res != LV_RES_OK) return res;
}
lv_roller_ext_t * ext = lv_obj_get_ext_attr(roller);
if(sign == LV_SIGNAL_STYLE_CHG) {
lv_obj_set_height(lv_page_get_scrl(roller),
lv_obj_get_height(ext->ddlist.label) + lv_obj_get_height(roller));
lv_obj_align(ext->ddlist.label, NULL, LV_ALIGN_CENTER, 0, 0);
lv_ddlist_set_selected(roller, ext->ddlist.sel_opt_id);
refr_position(roller, false);
} else if(sign == LV_SIGNAL_CORD_CHG) {
if(lv_obj_get_width(roller) != lv_area_get_width(param) ||
lv_obj_get_height(roller) != lv_area_get_height(param)) {
lv_ddlist_set_fix_height(roller, lv_obj_get_height(roller));
lv_obj_set_height(lv_page_get_scrl(roller),
lv_obj_get_height(ext->ddlist.label) + lv_obj_get_height(roller));
lv_obj_align(ext->ddlist.label, NULL, LV_ALIGN_CENTER, 0, 0);
lv_ddlist_set_selected(roller, ext->ddlist.sel_opt_id);
refr_position(roller, false);
}
} else if(sign == LV_SIGNAL_CONTROLL) {
char c = *((char*)param);
if(c == LV_GROUP_KEY_RIGHT || c == LV_GROUP_KEY_DOWN) {
if(ext->ddlist.sel_opt_id +1 < ext->ddlist.option_cnt) {
lv_roller_set_selected(roller, ext->ddlist.sel_opt_id + 1, true);
if(ext->ddlist.action != NULL) {
ext->ddlist.action(roller);
}
}
} else if(c == LV_GROUP_KEY_LEFT || c == LV_GROUP_KEY_UP) {
if(ext->ddlist.sel_opt_id > 0) {
lv_roller_set_selected(roller, ext->ddlist.sel_opt_id - 1, true);
if(ext->ddlist.action != NULL) {
ext->ddlist.action(roller);
}
}
}
}
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) {
/*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)*/
lv_coord_t new_x;
lv_coord_t new_y;
bool refr_x = false;
bool refr_y = false;
lv_area_t page_cords;
lv_area_t scrl_cords;
lv_coord_t hpad = page_style->body.padding.hor;
lv_coord_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(lv_area_get_width(&scrl_cords) + 2 * hpad < lv_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 = lv_area_get_width(&page_cords) - lv_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(lv_area_get_height(&scrl_cords) + 2 * vpad < lv_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 = lv_area_get_height(&page_cords) - lv_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_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.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) {
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.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;
}
/**
* 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) {
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;
}
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;
}
