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fix(roller) make lv_roller_set_visible_row_count consider border width

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This commit is contained in:
Gabor Kiss-Vamosi 2021-05-19 15:51:30 +02:00
parent 1a3f4d6b9c
commit 5f0fe3a22c
3 changed files with 6 additions and 3 deletions
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4
docs/widgets/core/roller.md
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@ -28,7 +28,9 @@ The get the currently selected option use `lv_roller_get_selected(roller)` it wi
`lv_roller_get_selected_str(roller, buf, buf_size)` copy the name of the selected option to `buf`.
### Visible rows
The number of visible rows can be adjusted with `lv_roller_set_visible_row_count(roller, num)`
The number of visible rows can be adjusted with `lv_roller_set_visible_row_count(roller, num)`.
This function calculates the height with the current style. If the font, line space, border width, etc of the roller changes this function needs to be called again.
## Events
- `LV_EVENT_VALUE_CHANGED` Sent when a new option is selected.

2
src/misc/lv_style.h
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@ -175,7 +175,7 @@ typedef enum {
LV_STYLE_BORDER_COLOR = 48,
LV_STYLE_BORDER_COLOR_FILTERED = 48 | LV_STYLE_PROP_FILTER,
LV_STYLE_BORDER_OPA = 49,
LV_STYLE_BORDER_WIDTH = 50,
LV_STYLE_BORDER_WIDTH = 50 | LV_STYLE_PROP_LAYOUT_REFR,
LV_STYLE_BORDER_SIDE = 51,
LV_STYLE_BORDER_POST = 52,

3
src/widgets/lv_roller.c
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@ -190,7 +190,8 @@ void lv_roller_set_visible_row_count(lv_obj_t * obj, uint8_t row_cnt)
const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
lv_obj_set_height(obj, (lv_font_get_line_height(font) + line_space) * row_cnt);
lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
lv_obj_set_height(obj, (lv_font_get_line_height(font) + line_space) * row_cnt + 2 * border_width);
}
/*=====================