lv_obj_set_style_clip_corner(true) fails to clip the bottom edge when parent has border_width=0 and pad_all=0 #9030
Description
LVGL version
9.3.0
Platform
Vscode simulator.
What happened?
Hi,
When a circular parent has clip_corner enabled and a square child fills the parent (100% x 100%), the child is clipped at the top but not at the bottom if the parent’s border_width and pad_all are both set to 0.
If either padding or border is non-zero, the clipping works on all sides.
How to reproduce?
lv_obj_t *scr = lv_screen_active();
// Parent: circular container with clip_corner enabled
lv_obj_t *parent = lv_obj_create(scr);
lv_obj_set_size(parent, 160, 160);
lv_obj_center(parent);
lv_obj_set_style_radius(parent, LV_RADIUS_CIRCLE, 0);
lv_obj_set_style_clip_corner(parent, true, 0);
// 🔴 Trigger condition: both 0
lv_obj_set_style_border_width(parent, 0, 0);
lv_obj_set_style_pad_all(parent, 0, 0);
// Visualize parent
lv_obj_set_style_bg_color(parent, lv_color_hex(0x224488), 0);
lv_obj_set_style_bg_opa(parent, LV_OPA_40, 0);
lv_obj_set_style_border_color(parent, lv_color_hex(0x224488), 0);
// Child: full-size square
lv_obj_t *child = lv_obj_create(parent);
lv_obj_set_size(child, LV_PCT(100), LV_PCT(100));
lv_obj_align(child, LV_ALIGN_CENTER, 0, 0);
lv_obj_set_style_radius(child, 0, 0);
lv_obj_set_style_bg_color(child, lv_color_hex(0xFF4444), 0);
lv_obj_set_style_bg_opa(child, LV_OPA_COVER, 0);
}```