1 #include <string.h>

2 #include <assert.h>

3 #include "imtk.h"

4 #include "state.h"

5 #include "draw.h"

6

7 static void calc_button_size(const char *label, int *wret, int *hret);

8 static void draw_button(int id, const char *label, int x, int y, int over);

9

10 int imtk_button(int id, const char *label, int x, int y)

11 {

12 int w, h, res = 0;

13 int over = 0;

14

15 assert(id >= 0);

16

17 calc_button_size(label, &w, &h);

18

19 if(imtk_hit_test(x, y, w, h)) {

20 imtk_set_hot(id);

21 over = 1;

22 }

23

24 if(imtk_button_state(IMTK_LEFT_BUTTON)) {

25 if(over) {

26 imtk_set_active(id);

27 }

28 } else { /* mouse button up */

29 if(imtk_is_active(id)) {

30 imtk_set_active(-1);

31 if(imtk_is_hot(id) && over) {

32 res = 1;

33 }

34 }

35 }

36

37 draw_button(id, label, x, y, over);

38 return res;

39 }

40

41 static void draw_button(int id, const char *label, int x, int y, int over)

42 {

43 float tcol[4], bcol[4];

44 int width, height, active = imtk_is_active(id);

45 unsigned int attr = 0;

46

47 if(over) attr |= IMTK_FOCUS_BIT;

48 if(active) attr |= IMTK_PRESS_BIT;

49

50 calc_button_size(label, &width, &height);

51

52 memcpy(tcol, imtk_get_color(IMTK_TOP_COLOR | attr), sizeof tcol);

53 memcpy(bcol, imtk_get_color(IMTK_BOTTOM_COLOR | attr), sizeof bcol);

54

55 imtk_draw_rect(x, y, width, height, tcol, bcol);

56 imtk_draw_frame(x, y, width, height, active ? FRAME_INSET : FRAME_OUTSET);

57

58 glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));

59 imtk_draw_string(x + 20, y + 15, label);

60 }

61

62 static void calc_button_size(const char *label, int *wret, int *hret)

63 {

64 int strsz = imtk_string_size(label);

65 if(wret) *wret = strsz + 40;

66 if(hret) *hret = 20;

67 }