1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/wsys_sdl.c	Sun Jun 26 07:56:13 2011 +0300
     1.3 @@ -0,0 +1,277 @@
     1.4 +/* SimplyGL window system module for SDL */
     1.5 +/* link-with: `sdl-config --libs` */
     1.6 +
     1.7 +#include "config.h"
     1.8 +
     1.9 +#ifdef USE_WSYS_MODULE_SDL
    1.10 +
    1.11 +#include <SDL/SDL.h>
    1.12 +#include "sgl.h"
    1.13 +#include "wsys.h"
    1.14 +
    1.15 +
    1.16 +
    1.17 +static int init(void);
    1.18 +static void shutdown(void);
    1.19 +
    1.20 +/* video mode switching */
    1.21 +static int set_vidmode(int xsz, int ysz);
    1.22 +static int get_vidmode(int *xsz, int *ysz);
    1.23 +
    1.24 +/* create/destroy windows */
    1.25 +static int create_window(int xsz, int ysz, unsigned int flags);
    1.26 +static void close_window(int wid);
    1.27 +
    1.28 +/* window management */
    1.29 +static int set_active(int wid);
    1.30 +static int set_title(const char *str);
    1.31 +static void redisplay(void);
    1.32 +static void swap_buffers(void);
    1.33 +
    1.34 +static int get_modifiers(void);
    1.35 +
    1.36 +/* event handling and friends */
    1.37 +static void set_event(int idx, int enable);
    1.38 +static int process_events(void);
    1.39 +static int handle_event(SDL_Event *ev);
    1.40 +
    1.41 +
    1.42 +static struct wsys_module ws = {
    1.43 +	"sdl", 6,
    1.44 +	init,
    1.45 +	shutdown,
    1.46 +	set_vidmode,
    1.47 +	get_vidmode,
    1.48 +	create_window,
    1.49 +	close_window,
    1.50 +	set_active,
    1.51 +	set_title,
    1.52 +	redisplay,
    1.53 +	swap_buffers,
    1.54 +	get_modifiers,
    1.55 +	set_event,
    1.56 +	process_events,
    1.57 +	0
    1.58 +};
    1.59 +
    1.60 +static int must_redisplay = 1;
    1.61 +static int win_width, win_height;
    1.62 +static unsigned int sdl_flags;
    1.63 +
    1.64 +
    1.65 +void sgl_register_sdl(void)
    1.66 +{
    1.67 +	sgl_register_module(&ws);
    1.68 +}
    1.69 +
    1.70 +
    1.71 +static int init(void)
    1.72 +{
    1.73 +	return SDL_Init(SDL_INIT_VIDEO);
    1.74 +}
    1.75 +
    1.76 +static void shutdown(void)
    1.77 +{
    1.78 +	SDL_Quit();
    1.79 +}
    1.80 +
    1.81 +/* video mode switching */
    1.82 +static int set_vidmode(int xsz, int ysz)
    1.83 +{
    1.84 +	return 0;	/* TODO */
    1.85 +}
    1.86 +
    1.87 +static int get_vidmode(int *xsz, int *ysz)
    1.88 +{
    1.89 +	return 0;	/* TODO */
    1.90 +}
    1.91 +
    1.92 +/* create/destroy windows */
    1.93 +static int create_window(int xsz, int ysz, unsigned int flags)
    1.94 +{
    1.95 +	void (*func)();
    1.96 +
    1.97 +	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
    1.98 +	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
    1.99 +	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
   1.100 +
   1.101 +	if(flags & SGL_DOUBLE) {
   1.102 +		SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
   1.103 +	}
   1.104 +	if(flags & SGL_DEPTH) {
   1.105 +		SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
   1.106 +	}
   1.107 +	if(flags & SGL_STENCIL) {
   1.108 +		SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
   1.109 +	}
   1.110 +	if(flags & SGL_STEREO) {
   1.111 +		SDL_GL_SetAttribute(SDL_GL_STEREO, 1);
   1.112 +	}
   1.113 +	if(flags & SGL_MULTISAMPLE) {
   1.114 +		SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
   1.115 +		SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
   1.116 +	}
   1.117 +
   1.118 +	sdl_flags = SDL_OPENGL | SDL_RESIZABLE;
   1.119 +
   1.120 +	if(!SDL_SetVideoMode(xsz, ysz, 32, sdl_flags)) {
   1.121 +		return -1;
   1.122 +	}
   1.123 +	win_width = xsz;
   1.124 +	win_height = ysz;
   1.125 +	set_title("OpenGL/SDL");
   1.126 +
   1.127 +	if((func = sgl_get_callback(SGL_CREATE))) {
   1.128 +		func(0);
   1.129 +	}
   1.130 +	if((func = sgl_get_callback(SGL_RESHAPE))) {
   1.131 +		func(xsz, ysz);
   1.132 +	}
   1.133 +
   1.134 +	return 0;
   1.135 +}
   1.136 +
   1.137 +static void close_window(int wid)
   1.138 +{
   1.139 +	SDL_Quit();
   1.140 +}
   1.141 +
   1.142 +/* window management */
   1.143 +static int set_active(int wid)
   1.144 +{
   1.145 +	return 0;	/* only one window is supported in SDL */
   1.146 +}
   1.147 +
   1.148 +static int set_title(const char *str)
   1.149 +{
   1.150 +	SDL_WM_SetCaption(str, str);
   1.151 +	return 0;
   1.152 +}
   1.153 +
   1.154 +static void redisplay(void)
   1.155 +{
   1.156 +	must_redisplay = 1;
   1.157 +}
   1.158 +
   1.159 +static void swap_buffers(void)
   1.160 +{
   1.161 +	SDL_GL_SwapBuffers();
   1.162 +}
   1.163 +
   1.164 +static int get_modifiers(void)
   1.165 +{
   1.166 +	int mod = 0;
   1.167 +	SDLMod sdlmod = SDL_GetModState();
   1.168 +
   1.169 +	if(sdlmod & (KMOD_LSHIFT | KMOD_RSHIFT)) {
   1.170 +		mod |= SGL_MOD_SHIFT;
   1.171 +	}
   1.172 +	if(sdlmod & (KMOD_LCTRL | KMOD_RCTRL)) {
   1.173 +		mod |= SGL_MOD_CONTROL;
   1.174 +	}
   1.175 +	if(sdlmod & (KMOD_LALT | KMOD_RALT)) {
   1.176 +		mod |= SGL_MOD_ALT;
   1.177 +	}
   1.178 +	return mod;
   1.179 +}
   1.180 +
   1.181 +/* event handling and friends */
   1.182 +static void set_event(int idx, int enable)
   1.183 +{
   1.184 +	/* no need to do anything for SDL */
   1.185 +}
   1.186 +
   1.187 +static int process_events(void)
   1.188 +{
   1.189 +	int got_event;
   1.190 +	SDL_Event ev;
   1.191 +	sgl_idle_callback_t idle = sgl_get_callback(SGL_IDLE);
   1.192 +	sgl_display_callback_t disp = sgl_get_callback(SGL_DISPLAY);
   1.193 +
   1.194 +	if(must_redisplay && disp) {
   1.195 +		disp();
   1.196 +		must_redisplay = 0;
   1.197 +	}
   1.198 +
   1.199 +	if(idle) {
   1.200 +		got_event = SDL_PollEvent(&ev);
   1.201 +	} else {
   1.202 +		if(!SDL_WaitEvent(&ev)) {
   1.203 +			return -1;
   1.204 +		}
   1.205 +		got_event = 1;
   1.206 +	}
   1.207 +
   1.208 +	if(got_event) {
   1.209 +		do {
   1.210 +			if(handle_event(&ev) == -1) {
   1.211 +				return -1;
   1.212 +			}
   1.213 +		} while(SDL_PollEvent(&ev));
   1.214 +	}
   1.215 +
   1.216 +	if(idle) {
   1.217 +		idle();
   1.218 +	}
   1.219 +
   1.220 +	return 0;
   1.221 +}
   1.222 +
   1.223 +static int handle_event(SDL_Event *ev)
   1.224 +{
   1.225 +	void (*func)();
   1.226 +
   1.227 +	switch(ev->type) {
   1.228 +	case SDL_VIDEORESIZE:
   1.229 +		/* XXX this'll fuck up big time on windows, will lose the gl state! */
   1.230 +		SDL_SetVideoMode(ev->resize.w, ev->resize.h, 32, sdl_flags);
   1.231 +
   1.232 +		if((func = sgl_get_callback(SGL_RESHAPE)) &&
   1.233 +				(ev->resize.w != win_width || ev->resize.h != win_height)) {
   1.234 +			win_width = ev->resize.w;
   1.235 +			win_height = ev->resize.h;
   1.236 +
   1.237 +			func(win_width, win_height);
   1.238 +		}
   1.239 +		break;
   1.240 +
   1.241 +	case SDL_VIDEOEXPOSE:
   1.242 +		must_redisplay = 1;
   1.243 +		break;
   1.244 +
   1.245 +	case SDL_KEYDOWN:
   1.246 +	case SDL_KEYUP:
   1.247 +		if((func = sgl_get_callback(SGL_KEYBOARD))) {
   1.248 +			func(ev->key.keysym.sym, ev->key.state == SDL_PRESSED);
   1.249 +		}
   1.250 +		break;
   1.251 +
   1.252 +	case SDL_MOUSEBUTTONDOWN:
   1.253 +	case SDL_MOUSEBUTTONUP:
   1.254 +		if((func = sgl_get_callback(SGL_MOUSE))) {
   1.255 +			func(ev->button.which - 1, ev->button.state == SDL_PRESSED, ev->button.x, ev->button.y);
   1.256 +		}
   1.257 +		break;
   1.258 +
   1.259 +	case SDL_MOUSEMOTION:
   1.260 +		if(ev->motion.state) {
   1.261 +			func = sgl_get_callback(SGL_MOTION);
   1.262 +		} else {
   1.263 +			func = sgl_get_callback(SGL_PASSIVE);
   1.264 +		}
   1.265 +
   1.266 +		if(func) {
   1.267 +			func(ev->motion.x, ev->motion.y);
   1.268 +		}
   1.269 +		break;
   1.270 +
   1.271 +	case SDL_QUIT:
   1.272 +		return -1;
   1.273 +	}
   1.274 +
   1.275 +	return 0;
   1.276 +}
   1.277 +
   1.278 +#else
   1.279 +int sgl_wsys_sdl_silence_the_fucking_empty_file_warnings;
   1.280 +#endif	/* USE_WSYS_MODULE_SDL */