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btnmatrix: find the nearest button if clicked between buttons

Browse Source 
https://forum.littlevgl.com/t/how-to-ignore-clicks-on-button-matrix-background-panel-which-cause-null-button-text/2158
This commit is contained in:
Gabor Kiss-Vamosi 2020-04-29 10:25:24 +02:00
parent db2792d6d2
commit 36934dcbbc
1 changed files with 23 additions and 4 deletions
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27
src/lv_widgets/lv_btnmatrix.c
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@ -1141,12 +1141,31 @@ static uint16_t get_button_from_point(lv_obj_t * btnm, lv_point_t * p)
uint16_t i;
lv_obj_get_coords(btnm, &btnm_cords);
lv_coord_t w = lv_obj_get_width(btnm);
lv_coord_t h = lv_obj_get_height(btnm);
lv_style_int_t pleft = lv_obj_get_style_pad_left(btnm, LV_BTNMATRIX_PART_BG);
lv_style_int_t pright = lv_obj_get_style_pad_right(btnm, LV_BTNMATRIX_PART_BG);
lv_style_int_t ptop = lv_obj_get_style_pad_top(btnm, LV_BTNMATRIX_PART_BG);
lv_style_int_t pbottom = lv_obj_get_style_pad_bottom(btnm, LV_BTNMATRIX_PART_BG);
lv_style_int_t pinner = lv_obj_get_style_pad_inner(btnm, LV_BTNMATRIX_PART_BG);
/*Get the half inner padding. Button look larger with this value. (+1 for rounding error)*/
pinner = (pinner / 2) + 1 + (pinner & 1);
for(i = 0; i < ext->btn_cnt; i++) {
lv_area_copy(&btn_area, &ext->button_areas[i]);
btn_area.x1 += btnm_cords.x1;
btn_area.y1 += btnm_cords.y1;
btn_area.x2 += btnm_cords.x1;
btn_area.y2 += btnm_cords.y1;
if(btn_area.x1 <= pleft) btn_area.x1 = btnm_cords.x1;
else btn_area.x1 += btnm_cords.x1 - pinner;
if(btn_area.y1 <= ptop) btn_area.y1 = btnm_cords.y1;
else btn_area.y1 += btnm_cords.y1 - pinner;
if(btn_area.x2 >= w - pright - 2) btn_area.x2 = btnm_cords.x2; /*-2 for rounding error*/
else btn_area.x2 += btnm_cords.x1 + pinner;
if(btn_area.y2 >= h - pbottom - 2) btn_area.y2 = btnm_cords.y2; /*-2 for rounding error*/
else btn_area.y2 += btnm_cords.y1 + pinner;
if(lv_area_is_point_on(&btn_area, p, 0) != false) {
break;
}