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 if(x == IMTK_AUTO || y == IMTK_AUTO) {

18 imtk_layout_get_pos(&x, &y);

19 }

20

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

22

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

24 imtk_set_hot(id);

25 over = 1;

26 }

27

28 if(imtk_button_state(IMTK_LEFT_BUTTON)) {

29 if(over) {

30 imtk_set_active(id);

31 }

32 } else { /* mouse button up */

33 if(imtk_is_active(id)) {

34 imtk_set_active(-1);

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

36 res = 1;

37 }

38 }

39 }

40

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

42 imtk_layout_advance(w, h);

43 return res;

44 }

45

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

47 {

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

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

50 unsigned int attr = 0;

51

52 if(over) attr |= IMTK_FOCUS_BIT;

53 if(active) attr |= IMTK_PRESS_BIT;

54

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

56

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

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

59

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

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

62

63 glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));

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

65 }

66

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

68 {

69 int strsz = imtk_string_size(label);

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

71 if(hret) *hret = 20;

72 }