rayfract

view src/imtk/button.c @ 10:1496aae2e7d4

find changesets by author, revision, files, or words in the commit message
- simplified build by including dependences in the source tree - added make dep tracking - added mingw cross-build rules - added readme & licence
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 31 Jul 2023 18:58:56 +0300
parents
children
line source
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 }