Calling lv_obj_set_style_bg_img_src fails to display image

Troubleshooting
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1

When I was writing a DYN APP, I used the function lv_obj_set_style_bg_img_src together with APP_GET_IMG() to set the background image of an object. It displayed correctly in the simulator, but the image didn’t show up on Huangshan Pi. However, using lv_img_create and lv_img_set_src works fine. Is the function lv_obj_set_style_bg_img_src not compatible?

2

Could you please provide the logs or code?

3

Hardware rendering at the board level has not yet been adapted for the bg img attribute; updates will be synchronized once adaptation is completed.

4

static void draw_bg_img(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
{
if(dsc->bg_img_src == NULL) return;
if(dsc->bg_img_opa <= LV_OPA_MIN) return;

lv_area_t clip_area;
if(!_lv_area_intersect(&clip_area, coords, draw_ctx->clip_area)) {
    return;
}

const lv_area_t * clip_area_ori = draw_ctx->clip_area;
draw_ctx->clip_area = &clip_area;

lv_img_src_t src_type = lv_img_src_get_type(dsc->bg_img_src);
if(src_type != LV_IMG_SRC_SYMBOL) 
{
    lv_img_header_t header;
    lv_res_t res = lv_img_decoder_get_info(dsc->bg_img_src, &header);
    if(res == LV_RES_OK) {
        lv_draw_img_dsc_t img_dsc;
        lv_draw_img_dsc_init(&img_dsc);
        img_dsc.blend_mode = dsc->blend_mode;
        img_dsc.recolor = dsc->bg_img_recolor;
        img_dsc.recolor_opa = dsc->bg_img_recolor_opa;
        img_dsc.opa = dsc->bg_img_opa;

        /*Center align*/
        if(dsc->bg_img_tiled == false) {
            lv_area_t area;
            area.x1 = coords->x1 + lv_area_get_width(coords) / 2 - header.w / 2;
            area.y1 = coords->y1 + lv_area_get_height(coords) / 2 - header.h / 2;
            area.x2 = area.x1 + header.w - 1;
            area.y2 = area.y1 + header.h - 1;

            lv_draw_img(draw_ctx, &img_dsc, &area, dsc->bg_img_src);
        }
        else {
            lv_area_t area;
            area.y1 = coords->y1;
            area.y2 = area.y1 + header.h - 1;

            for(; area.y1 <= coords->y2; area.y1 += header.h, area.y2 += header.h) {

                area.x1 = coords->x1;
                area.x2 = area.x1 + header.w - 1;
                for(; area.x1 <= coords->x2; area.x1 += header.w, area.x2 += header.w) {
                    lv_draw_img(draw_ctx, &img_dsc, &area, dsc->bg_img_src);
                }
            }
        }
    }
    else {
        LV_LOG_WARN("Couldn't read the background image");
    }
}

draw_ctx->clip_area = clip_area_ori;

}

image
image1919×849 66.2 KB

可以按上述修改验证下