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lib: gui: lvgl: match kscan rotation with the display

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Kscan coordinates are transformed in case display is rotated so that
frames of reference are aligned.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
This commit is contained in:
Gerard Marull-Paretas 2020-09-14 15:05:28 +02:00 • committed by Carles Cufí
commit e8459719d8
1 changed files with 18 additions and 0 deletions
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18
lib/gui/lvgl/lvgl.c
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@ -232,6 +232,24 @@ static bool lvgl_pointer_kscan_read(lv_indev_drv_t *drv, lv_indev_data_t *data)
prev.point.y = cap.y_resolution - prev.point.y;
}
/* rotate touch point to match display rotation */
if (cap.current_orientation == DISPLAY_ORIENTATION_ROTATED_90) {
lv_coord_t x;
x = prev.point.x;
prev.point.x = cap.y_resolution - prev.point.y;
prev.point.y = x;
} else if (cap.current_orientation == DISPLAY_ORIENTATION_ROTATED_180) {
prev.point.x = cap.x_resolution - prev.point.x;
prev.point.y = cap.y_resolution - prev.point.y;
} else if (cap.current_orientation == DISPLAY_ORIENTATION_ROTATED_270) {
lv_coord_t x;
x = prev.point.x;
prev.point.x = prev.point.y;
prev.point.y = cap.x_resolution - x;
}
*data = prev;
return k_msgq_num_used_get(&kscan_msgq) > 0;