| rev |
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nuclear@7
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1 /* SimplyGL window system module for GLUT */
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nuclear@7
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2 /* link-with: -lglut */
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nuclear@10
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3 /* mac-framework: -framework GLUT */
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nuclear@7
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4
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nuclear@7
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5 #include "config.h"
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nuclear@7
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6
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nuclear@7
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7 #ifdef USE_WSYS_MODULE_GLUT
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nuclear@7
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8
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nuclear@7
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9 #include <setjmp.h>
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nuclear@7
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10 #ifndef __APPLE__
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nuclear@7
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11 #include <GL/glut.h>
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nuclear@7
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12 #ifdef FREEGLUT
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nuclear@7
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13 #include <GL/freeglut_ext.h>
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nuclear@7
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14 #endif /* freeglut */
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15
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nuclear@7
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16 #else /* apple */
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nuclear@7
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17 #include <GLUT/glut.h>
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nuclear@7
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18 #endif
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nuclear@7
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19
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nuclear@7
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20 #include "sgl.h"
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nuclear@7
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21 #include "wsys.h"
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22
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nuclear@7
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23 struct window {
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nuclear@7
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24 int id;
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nuclear@7
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25 struct window *next;
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nuclear@7
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26 };
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nuclear@7
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27
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nuclear@7
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28 static int init(void);
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nuclear@7
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29 static void shutdown(void);
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nuclear@7
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30
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nuclear@7
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31 /* video mode switching */
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nuclear@7
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32 static int set_vidmode(int xsz, int ysz);
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nuclear@7
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33 static int get_vidmode(int *xsz, int *ysz);
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nuclear@7
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34
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nuclear@7
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35 /* create/destroy windows */
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nuclear@7
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36 static int create_window(int xsz, int ysz, unsigned int flags);
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nuclear@7
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37 static void close_window(int id);
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nuclear@7
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38
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nuclear@7
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39 /* window management */
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nuclear@7
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40 static int set_active(int id);
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nuclear@7
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41 static int set_title(const char *str);
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nuclear@7
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42 static void redisplay(void);
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nuclear@7
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43 static void swap_buffers(void);
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nuclear@7
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44
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nuclear@7
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45 static int get_modifiers(void);
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nuclear@7
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46
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nuclear@7
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47 /* event handling and friends */
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nuclear@7
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48 static void set_event(int idx, int enable);
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nuclear@7
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49 static int process_events(void);
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nuclear@7
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50
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nuclear@7
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51 /* callbacks */
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nuclear@7
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52 static void disp_cb(void);
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nuclear@7
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53 static void reshape_cb(int x, int y);
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nuclear@7
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54 static void keyb_down_cb(unsigned char c, int x, int y);
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nuclear@7
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55 static void keyb_up_cb(unsigned char c, int x, int y);
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nuclear@7
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56 static void special_down_cb(int c, int x, int y);
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nuclear@7
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57 static void special_up_cb(int c, int x, int y);
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nuclear@7
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58 static void mouse_cb(int bn, int state, int x, int y);
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nuclear@7
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59 static void motion_cb(int x, int y);
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nuclear@7
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60 static void passive_cb(int x, int y);
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nuclear@7
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61 static void idle_cb(void);
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nuclear@7
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62
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63
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nuclear@7
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64 static struct wsys_module ws = {
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nuclear@7
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65 "glut", 1,
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66 init,
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67 shutdown,
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nuclear@7
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68 set_vidmode,
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nuclear@7
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69 get_vidmode,
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nuclear@7
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70 create_window,
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nuclear@7
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71 close_window,
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nuclear@7
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72 set_active,
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nuclear@7
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73 set_title,
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nuclear@7
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74 redisplay,
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nuclear@7
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75 swap_buffers,
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nuclear@7
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76 get_modifiers,
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nuclear@7
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77 set_event,
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nuclear@7
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78 process_events,
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nuclear@7
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79 0
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nuclear@7
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80 };
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nuclear@7
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81
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nuclear@7
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82 #ifndef FREEGLUT
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nuclear@7
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83 static jmp_buf jbuf;
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nuclear@7
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84 #endif
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nuclear@7
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85
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nuclear@7
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86 static struct window *winlist;
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nuclear@7
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87
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nuclear@7
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88
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nuclear@7
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89 /* this is the only exported function, everything else should be static */
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nuclear@7
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90 void sgl_register_glut(void)
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nuclear@7
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91 {
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nuclear@7
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92 sgl_register_module(&ws);
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nuclear@7
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93 }
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nuclear@7
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94
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nuclear@7
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95 static int init(void)
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nuclear@7
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96 {
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nuclear@7
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97 char *argv[] = { "simplygl", 0 };
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nuclear@7
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98 int argc = 1;
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nuclear@7
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99
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nuclear@7
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100 glutInit(&argc, argv);
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nuclear@7
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101 return 0;
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nuclear@7
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102 }
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nuclear@7
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103
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nuclear@7
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104 static void shutdown(void)
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nuclear@7
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105 {
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nuclear@7
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106 struct window *win = winlist;
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nuclear@7
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107
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nuclear@7
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108 while(win) {
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nuclear@7
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109 int id = win->id;
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nuclear@7
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110 win = win->next;
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nuclear@7
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111
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nuclear@7
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112 close_window(id);
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nuclear@7
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113 }
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nuclear@7
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114 winlist = 0;
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nuclear@7
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115 }
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nuclear@7
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116
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nuclear@7
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117 static int set_vidmode(int xsz, int ysz)
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nuclear@7
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118 {
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nuclear@7
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119 /* TODO */
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nuclear@7
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120 return 0;
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nuclear@7
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121 }
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nuclear@7
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122
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nuclear@7
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123 static int get_vidmode(int *xsz, int *ysz)
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nuclear@7
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124 {
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nuclear@7
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125 /* TODO */
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nuclear@7
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126 return 0;
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nuclear@7
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127 }
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nuclear@7
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128
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nuclear@7
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129 static int create_window(int xsz, int ysz, unsigned int flags)
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nuclear@7
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130 {
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nuclear@7
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131 struct window *win;
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nuclear@7
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132 unsigned int glut_flags = GLUT_RGBA;
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nuclear@7
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133
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nuclear@7
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134 if(flags & SGL_DOUBLE) {
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nuclear@7
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135 glut_flags |= GLUT_DOUBLE;
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nuclear@7
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136 }
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nuclear@7
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137 if(flags & SGL_DEPTH) {
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nuclear@7
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138 glut_flags |= GLUT_DEPTH;
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nuclear@7
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139 }
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nuclear@7
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140 if(flags & SGL_STENCIL) {
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nuclear@7
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141 glut_flags |= GLUT_STENCIL;
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nuclear@7
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142 }
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nuclear@7
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143 if(flags & SGL_STEREO) {
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nuclear@7
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144 glut_flags |= GLUT_STEREO;
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nuclear@7
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145 }
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nuclear@7
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146 if(flags & SGL_MULTISAMPLE) {
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nuclear@7
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147 glut_flags |= GLUT_MULTISAMPLE;
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nuclear@7
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148 }
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nuclear@7
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149
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nuclear@7
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150 if(!(win = malloc(sizeof *win))) {
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nuclear@7
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151 return -1;
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nuclear@7
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152 }
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nuclear@7
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153
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nuclear@7
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154 glutInitDisplayMode(glut_flags);
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nuclear@7
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155 glutInitWindowSize(xsz, ysz);
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nuclear@7
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156 if((win->id = glutCreateWindow("OpenGL/GLUT")) <= 0) {
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nuclear@7
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157 free(win);
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nuclear@7
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158 return -1;
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nuclear@7
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159 }
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nuclear@7
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160
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nuclear@7
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161 win->next = winlist;
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nuclear@7
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162 winlist = win;
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nuclear@7
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163 return win->id;
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nuclear@7
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164 }
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nuclear@7
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165
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nuclear@7
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166 static void close_window(int id)
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nuclear@7
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167 {
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nuclear@7
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168 struct window dummy, *win, *prev;
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nuclear@7
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169
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nuclear@7
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170 dummy.next = win = winlist;
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nuclear@7
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171 prev = &dummy;
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nuclear@7
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172
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nuclear@7
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173 while(win) {
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nuclear@7
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174 if(win->id == id) {
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nuclear@7
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175 prev->next = win->next;
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nuclear@7
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176 free(win);
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nuclear@7
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177 break;
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nuclear@7
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178 }
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nuclear@7
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179 win = win->next;
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nuclear@7
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180 }
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nuclear@7
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181
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nuclear@7
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182 glutDestroyWindow(id);
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nuclear@7
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183 }
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nuclear@7
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184
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nuclear@7
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185 static int set_active(int id)
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nuclear@7
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186 {
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nuclear@7
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187 glutSetWindow(id);
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nuclear@7
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188 return 0;
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nuclear@7
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189 }
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nuclear@7
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190
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nuclear@7
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191 static int set_title(const char *str)
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nuclear@7
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192 {
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nuclear@7
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193 glutSetWindowTitle(str);
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nuclear@7
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194 glutSetIconTitle(str);
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nuclear@7
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195 return 0;
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nuclear@7
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196 }
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nuclear@7
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197
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nuclear@7
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198 static void redisplay(void)
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nuclear@7
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199 {
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nuclear@7
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200 glutPostRedisplay();
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nuclear@7
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201 }
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nuclear@7
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202
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nuclear@7
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203 static void swap_buffers(void)
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nuclear@7
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204 {
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nuclear@7
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205 glutSwapBuffers();
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nuclear@7
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206 }
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nuclear@7
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207
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nuclear@7
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208 static int get_modifiers(void)
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nuclear@7
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209 {
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nuclear@7
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210 return glutGetModifiers();
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nuclear@7
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211 }
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nuclear@7
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212
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nuclear@7
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213 static void set_event(int idx, int enable)
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nuclear@7
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214 {
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nuclear@7
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215 switch(idx) {
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nuclear@7
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216 case SGL_DISPLAY:
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nuclear@7
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217 glutDisplayFunc(enable ? disp_cb : 0);
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nuclear@7
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218 break;
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nuclear@7
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219 case SGL_RESHAPE:
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nuclear@7
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220 glutReshapeFunc(enable ? reshape_cb : 0);
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nuclear@7
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221 break;
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nuclear@7
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222 case SGL_KEYBOARD:
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nuclear@7
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223 glutKeyboardFunc(enable ? keyb_down_cb : 0);
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nuclear@7
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224 glutKeyboardUpFunc(enable ? keyb_up_cb : 0);
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nuclear@7
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225 glutSpecialFunc(enable ? special_down_cb : 0);
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nuclear@7
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226 glutSpecialUpFunc(enable ? special_up_cb : 0);
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nuclear@7
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227 break;
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nuclear@7
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228 case SGL_MOUSE:
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nuclear@7
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229 glutMouseFunc(enable ? mouse_cb : 0);
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nuclear@7
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230 break;
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nuclear@7
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231 case SGL_MOTION:
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nuclear@7
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232 glutMotionFunc(enable ? motion_cb : 0);
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nuclear@7
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233 break;
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nuclear@7
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234 case SGL_PASSIVE:
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nuclear@7
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235 glutPassiveMotionFunc(enable ? passive_cb : 0);
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nuclear@7
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236 break;
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nuclear@7
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237 case SGL_IDLE:
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nuclear@7
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238 glutIdleFunc(enable ? idle_cb : 0);
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nuclear@7
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239 break;
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nuclear@7
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240 default:
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nuclear@7
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241 break;
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nuclear@7
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242 }
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nuclear@7
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243 }
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nuclear@7
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244
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nuclear@7
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245 static int process_events(void)
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nuclear@7
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246 {
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nuclear@7
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247 #ifdef FREEGLUT
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nuclear@7
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248 glutMainLoopEvent();
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nuclear@7
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249 #else
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nuclear@7
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250 if(setjmp(jbuf) == 0) {
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nuclear@7
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251 glutMainLoop();
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nuclear@7
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252 }
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nuclear@7
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253 /* ok ... what happens is any callback that kicks in will set the idle func
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nuclear@7
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254 * if it's not set, and then the idle func will longjmp right back here...
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nuclear@7
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255 */
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nuclear@7
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256 #endif
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nuclear@7
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257 return 0;
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nuclear@7
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258 }
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nuclear@7
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259
|
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nuclear@7
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260 static void disp_cb(void)
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nuclear@7
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261 {
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nuclear@7
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262 sgl_display_callback_t func = sgl_get_callback(SGL_DISPLAY);
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nuclear@7
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263 func();
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nuclear@7
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264
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nuclear@7
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265 #ifndef FREEGLUT
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nuclear@7
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266 glutIdleFunc(idle_cb);
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nuclear@7
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267 #endif
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nuclear@7
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268 }
|
|
nuclear@7
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269
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nuclear@7
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270 static void reshape_cb(int x, int y)
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nuclear@7
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271 {
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nuclear@7
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272 sgl_reshape_callback_t func = sgl_get_callback(SGL_RESHAPE);
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nuclear@7
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273 func(x, y);
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nuclear@7
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274
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nuclear@7
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275 #ifndef FREEGLUT
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nuclear@7
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276 glutIdleFunc(idle_cb);
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nuclear@7
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277 #endif
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nuclear@7
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278 }
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|
nuclear@7
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279
|
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nuclear@7
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280 static void keyb_down_cb(unsigned char c, int x, int y)
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nuclear@7
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281 {
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nuclear@7
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282 sgl_keyboard_callback_t func = sgl_get_callback(SGL_KEYBOARD);
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nuclear@7
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283 func((int)c, 1);
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nuclear@7
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284
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nuclear@7
|
285 #ifndef FREEGLUT
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nuclear@7
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286 glutIdleFunc(idle_cb);
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nuclear@7
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287 #endif
|
|
nuclear@7
|
288 }
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|
nuclear@7
|
289
|
|
nuclear@7
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290 static void keyb_up_cb(unsigned char c, int x, int y)
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nuclear@7
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291 {
|
|
nuclear@7
|
292 sgl_keyboard_callback_t func = sgl_get_callback(SGL_KEYBOARD);
|
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nuclear@7
|
293 func((int)c, 0);
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|
nuclear@7
|
294
|
|
nuclear@7
|
295 #ifndef FREEGLUT
|
|
nuclear@7
|
296 glutIdleFunc(idle_cb);
|
|
nuclear@7
|
297 #endif
|
|
nuclear@7
|
298 }
|
|
nuclear@7
|
299
|
|
nuclear@7
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300 static void special_down_cb(int c, int x, int y)
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|
nuclear@7
|
301 {
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|
nuclear@7
|
302 sgl_keyboard_callback_t func = sgl_get_callback(SGL_KEYBOARD);
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|
nuclear@7
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303 func(c, 1);
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|
nuclear@7
|
304
|
|
nuclear@7
|
305 #ifndef FREEGLUT
|
|
nuclear@7
|
306 glutIdleFunc(idle_cb);
|
|
nuclear@7
|
307 #endif
|
|
nuclear@7
|
308 }
|
|
nuclear@7
|
309
|
|
nuclear@7
|
310 static void special_up_cb(int c, int x, int y)
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|
nuclear@7
|
311 {
|
|
nuclear@7
|
312 sgl_keyboard_callback_t func = sgl_get_callback(SGL_KEYBOARD);
|
|
nuclear@7
|
313 func(c, 0);
|
|
nuclear@7
|
314
|
|
nuclear@7
|
315 #ifndef FREEGLUT
|
|
nuclear@7
|
316 glutIdleFunc(idle_cb);
|
|
nuclear@7
|
317 #endif
|
|
nuclear@7
|
318 }
|
|
nuclear@7
|
319
|
|
nuclear@7
|
320 static void mouse_cb(int bn, int state, int x, int y)
|
|
nuclear@7
|
321 {
|
|
nuclear@7
|
322 sgl_mouse_callback_t func = sgl_get_callback(SGL_MOUSE);
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|
nuclear@7
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323 func(0, bn, state, x, y);
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|
nuclear@7
|
324
|
|
nuclear@7
|
325 #ifndef FREEGLUT
|
|
nuclear@7
|
326 glutIdleFunc(idle_cb);
|
|
nuclear@7
|
327 #endif
|
|
nuclear@7
|
328 }
|
|
nuclear@7
|
329
|
|
nuclear@7
|
330 static void motion_cb(int x, int y)
|
|
nuclear@7
|
331 {
|
|
nuclear@7
|
332 sgl_motion_callback_t func = sgl_get_callback(SGL_MOTION);
|
|
nuclear@7
|
333 func(0, x, y);
|
|
nuclear@7
|
334
|
|
nuclear@7
|
335 #ifndef FREEGLUT
|
|
nuclear@7
|
336 glutIdleFunc(idle_cb);
|
|
nuclear@7
|
337 #endif
|
|
nuclear@7
|
338 }
|
|
nuclear@7
|
339
|
|
nuclear@7
|
340 static void passive_cb(int x, int y)
|
|
nuclear@7
|
341 {
|
|
nuclear@7
|
342 sgl_passive_callback_t func = sgl_get_callback(SGL_PASSIVE);
|
|
nuclear@7
|
343 func(0, x, y);
|
|
nuclear@7
|
344
|
|
nuclear@7
|
345 #ifndef FREEGLUT
|
|
nuclear@7
|
346 glutIdleFunc(idle_cb);
|
|
nuclear@7
|
347 #endif
|
|
nuclear@7
|
348 }
|
|
nuclear@7
|
349
|
|
nuclear@7
|
350 static void idle_cb(void)
|
|
nuclear@7
|
351 {
|
|
nuclear@7
|
352 sgl_idle_callback_t func = sgl_get_callback(SGL_IDLE);
|
|
nuclear@7
|
353 if(func) {
|
|
nuclear@7
|
354 func();
|
|
nuclear@7
|
355 #ifndef FREEGLUT
|
|
nuclear@7
|
356 } else {
|
|
nuclear@7
|
357 /* this was just the longjmp trick so restore the lack of idle func */
|
|
nuclear@7
|
358 glutIdleFunc(0);
|
|
nuclear@7
|
359 #endif
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nuclear@7
|
360 }
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|
nuclear@7
|
361
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|
nuclear@7
|
362 #ifndef FREEGLUT
|
|
nuclear@7
|
363 longjmp(jbuf, 0);
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|
nuclear@7
|
364 #endif
|
|
nuclear@7
|
365 }
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|
nuclear@7
|
366
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nuclear@8
|
367 #else
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|
nuclear@8
|
368 int sgl_wsys_glut_silence_the_fucking_empty_file_warnings;
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|
nuclear@7
|
369 #endif /* USE_WSYS_MODULE_GLUT */
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