1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 Sam Lantinga
4
5    This library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9
10    This library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14
15    You should have received a copy of the GNU Lesser General Public
16    License along with this library; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18
19    Sam Lantinga
20    slouken@libsdl.org
21*/
22#include "SDL_config.h"
23
24/* Handle the event stream, converting DGA events into SDL events */
25
26#include <stdio.h>
27#include <X11/Xlib.h>
28#include "../Xext/extensions/xf86dga.h"
29
30#include "SDL_timer.h"
31#include "../SDL_sysvideo.h"
32#include "../../events/SDL_events_c.h"
33#include "SDL_dgavideo.h"
34#include "SDL_dgaevents_c.h"
35
36/* get function pointers... */
37#include "../x11/SDL_x11dyn.h"
38
39/* Heheh we're using X11 event code */
40extern int X11_Pending(Display *display);
41extern void X11_InitKeymap(void);
42extern SDLKey X11_TranslateKeycode(Display *display, KeyCode kc);
43
44static int DGA_DispatchEvent(_THIS)
45{
46	int posted;
47	SDL_NAME(XDGAEvent) xevent;
48
49	XNextEvent(DGA_Display, (XEvent *)&xevent);
50
51	posted = 0;
52	xevent.type -= DGA_event_base;
53	switch (xevent.type) {
54
55	    /* Mouse motion? */
56	    case MotionNotify: {
57		if ( SDL_VideoSurface ) {
58			posted = SDL_PrivateMouseMotion(0, 1,
59					xevent.xmotion.dx, xevent.xmotion.dy);
60		}
61	    }
62	    break;
63
64	    /* Mouse button press? */
65	    case ButtonPress: {
66		posted = SDL_PrivateMouseButton(SDL_PRESSED,
67					xevent.xbutton.button, 0, 0);
68	    }
69	    break;
70
71	    /* Mouse button release? */
72	    case ButtonRelease: {
73		posted = SDL_PrivateMouseButton(SDL_RELEASED,
74					xevent.xbutton.button, 0, 0);
75	    }
76	    break;
77
78	    /* Key press? */
79	    case KeyPress: {
80		SDL_keysym keysym;
81		KeyCode keycode;
82		XKeyEvent xkey;
83
84		SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);
85		keycode = xkey.keycode;
86#ifdef DEBUG_XEVENTS
87printf("KeyPress (X11 keycode = 0x%X)\n", xkey.keycode);
88#endif
89		/* Get the translated SDL virtual keysym */
90		keysym.scancode = keycode;
91		keysym.sym = X11_TranslateKeycode(DGA_Display, keycode);
92		keysym.mod = KMOD_NONE;
93		keysym.unicode = 0;
94
95		/* Look up the translated value for the key event */
96		if ( SDL_TranslateUNICODE ) {
97			static XComposeStatus state;
98			char keybuf[32];
99
100			if ( XLookupString(&xkey, keybuf, sizeof(keybuf), NULL, &state) ) {
101				/*
102				* FIXME: XLookupString() may yield more than one
103				* character, so we need a mechanism to allow for
104				* this (perhaps null keypress events with a
105				* unicode value)
106				*/
107				keysym.unicode = (Uint8)keybuf[0];
108			}
109		}
110		posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym);
111	    }
112	    break;
113
114	    /* Key release? */
115	    case KeyRelease: {
116		SDL_keysym keysym;
117		KeyCode keycode;
118		XKeyEvent xkey;
119
120		SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);
121		keycode = xkey.keycode;
122#ifdef DEBUG_XEVENTS
123printf("KeyRelease (X11 keycode = 0x%X)\n", xkey.keycode);
124#endif
125		/* Get the translated SDL virtual keysym */
126		keysym.scancode = keycode;
127		keysym.sym = X11_TranslateKeycode(DGA_Display, keycode);
128		keysym.mod = KMOD_NONE;
129		keysym.unicode = 0;
130		posted = SDL_PrivateKeyboard(SDL_RELEASED, &keysym);
131	    }
132	    break;
133	}
134	return(posted);
135}
136
137void DGA_PumpEvents(_THIS)
138{
139	/* Keep processing pending events */
140	LOCK_DISPLAY();
141
142	/* Update activity every five seconds to prevent screensaver. --ryan. */
143	if (!allow_screensaver) {
144		static Uint32 screensaverTicks;
145		Uint32 nowTicks = SDL_GetTicks();
146		if ((nowTicks - screensaverTicks) > 5000) {
147			XResetScreenSaver(DGA_Display);
148			screensaverTicks = nowTicks;
149		}
150	}
151
152	while ( X11_Pending(DGA_Display) ) {
153		DGA_DispatchEvent(this);
154	}
155
156	UNLOCK_DISPLAY();
157}
158
159void DGA_InitOSKeymap(_THIS)
160{
161	X11_InitKeymap();
162}
163
164