github-code/lvgl
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(draw): add non uniform scale (scale_x and scale_y)

Browse Source
This commit is contained in:
Gabor Kiss-Vamosi
2023-10-20 20:40:57 +02:00
parent 8f57f12a44
commit 85798af3cd
37 changed files with 267 additions and 132 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/indev/lv_indev.c
View File

@@ -1166,21 +1166,25 @@ static void indev_proc_release(lv_indev_t * indev)
/*Get the transformed vector with this object*/
if(scroll_obj) {
int16_t angle = 0;
int16_t zoom = 256;
int16_t zoom_x = 256;
int16_t zoom_y = 256;
lv_point_t pivot = { 0, 0 };
lv_obj_t * parent = scroll_obj;
while(parent) {
angle += lv_obj_get_style_transform_rotation(parent, 0);
int32_t zoom_act = lv_obj_get_style_transform_scale_safe(parent, 0);
zoom = (zoom * zoom_act) >> 8;
int32_t zoom_act_x = lv_obj_get_style_transform_scale_x_safe(parent, 0);
int32_t zoom_act_y = lv_obj_get_style_transform_scale_y_safe(parent, 0);
zoom_x = (zoom_x * zoom_act_x) >> 8;
zoom_y = (zoom_x * zoom_act_y) >> 8;
parent = lv_obj_get_parent(parent);
}
if(angle != 0 || zoom != LV_SCALE_NONE) {
if(angle != 0 || zoom_y != LV_SCALE_NONE || zoom_x != LV_SCALE_NONE) {
angle = -angle;
zoom = (256 * 256) / zoom;
lv_point_transform(&indev->pointer.scroll_throw_vect, angle, zoom, &pivot);
lv_point_transform(&indev->pointer.scroll_throw_vect_ori, angle, zoom, &pivot);
zoom_x = (256 * 256) / zoom_x;
zoom_y = (256 * 256) / zoom_y;
lv_point_transform(&indev->pointer.scroll_throw_vect, angle, zoom_x, zoom_y, &pivot, false);
lv_point_transform(&indev->pointer.scroll_throw_vect_ori, angle, zoom_x, zoom_y, &pivot, false);
}
}