display

0 #include "display/window_pivot.hpp"

1

2 #include "display/utility.hpp"

3

4 namespace display

5 {

6

7 using namespace literals; // NOLINT(*namespace*)

8

9 plc_t WindowPivot::place(plc_t aplc, piv_t piv, dim_t dim)

10 {

11 const auto [awth, ahth] = aplc.dim;

12 const auto [wth, hgt] = dim;

13

14 dim_t start(0_w, 0_h);

15 dim_t end(0_w, 0_h);

16

17 using display::add_lim, display::sub_lim;

18

19 switch (piv.piv_x()) {

20 case piv_t::x::left():

21 start.width = 0_w;

22 end.width = add_lim(start.width, wth, awth);

23 break;

24 case piv_t::x::center():

25 start.width = sub_lim((awth / 2_w), (wth / 2_w), 0_w);

26 end.width = add_lim(start.width, wth, awth);

27 break;

28 case piv_t::x::right():

29 end.width = awth;

30 start.width = sub_lim(end.width, wth, 0_w);

31 break;

32 }

33

34 switch (piv.piv_y()) {

35 case piv_t::y::top():

36 start.height = 0_h;

37 end.height = add_lim(start.height, hgt, ahth);

38 break;

39 case piv_t::y::center():

40 start.height = sub_lim((ahth / 2_h), (hgt / 2_h), 0_h);

41 end.height = add_lim(start.height, hgt, ahth);

42 break;

43 case piv_t::y::bottom():

44 end.height = ahth;

45 start.height = sub_lim(end.height, hgt, 0_h);

46 break;

47 }

48

49 return {aplc.pos + start, end - start};

50 }

51

52 } // namespace display