The roller selected bg have a probram

Bug (archived)
1

Description

When I used the pattern_image that set the LV_ROLLER_PART_SELECTED for ROLLER, there was still some residue in the selected section.

What MCU/Processor/Board and compiler are you using?

PC SIM
V7.9.0

What do you experience?

What do you expect?

image

Code to reproduce

void lv_ex_roller_1(void)
{
    static lv_style_t local_style;
    static lv_style_t bg_style;
    lv_style_init(&local_style);
    lv_style_init(&bg_style);
    lv_style_set_pattern_image(&bg_style, LV_STATE_DEFAULT, &roll_background);
    lv_style_set_text_font(&bg_style, LV_STATE_DEFAULT, &lv_font_montserrat_22);
    //lv_style_set_text_color(&local_style, LV_STATE_DEFAULT, LV_COLOR_WHITE);
    lv_style_set_pattern_image(&local_style, LV_STATE_DEFAULT, &roll_background);
    lv_obj_t *roller1 = lv_roller_create(lv_scr_act(), NULL);
    //lv_obj_set_size(roller1,200,128);
    lv_obj_add_style(roller1, LV_ROLLER_PART_BG,&bg_style);
    lv_obj_add_style(roller1, LV_ROLLER_PART_SELECTED, &local_style);
    lv_roller_set_options(roller1,
                        "1\n"
                        "2\n"
                        "3\n"
                        "4\n"
                        "5\n"
                        "6\n"
                        "7\n"
                        "8\n"
                        "9\n"
                        "10\n"
                        "11\n"
                        "12",
                        LV_ROLLER_MODE_NORMAL);
    lv_roller_set_anim_time(roller1, 50);
    lv_roller_set_fix_width(roller1,208);
    lv_roller_set_visible_row_count(roller1, 3);
    lv_obj_align(roller1, NULL, LV_ALIGN_CENTER, 0, 0);
    lv_obj_set_event_cb(roller1, event_handler);
}

Screenshot and/or video

image
image

by the way

I would like to know whether the current ROLLER can achieve the pseudo-3D effect.

image
image708×466 22.6 KB

if

2

Unfortunately, this is not possible at this time, because 3d text rendering is not supported, nor do I see an easy way to fake it.

3

THANKS,The 3D effect of ROLL is also not very important.I rechecked the source file of the picture and found that its width was only 200, but I set the width of ROLLER to 208 in the code, so I think this is the reason of the problem.
image
However, I think the support for images should be necessary, because in the case of small screen applications like watches, image ROLLER is one of the menu solutions.(Horizontal and Vertical)