[pcsx_rearmed.git] / frontend / linux / xenv.c

/*
 * (C) Gražvydas "notaz" Ignotas, 2009-2012
 *
 * This work is licensed under the terms of any of these licenses
 * (at your option):
 *  - GNU GPL, version 2 or later.
 *  - GNU LGPL, version 2.1 or later.
 * See the COPYING file in the top-level directory.
 */

#include <stdio.h>
#include <string.h>
#include <pthread.h>

#include <dlfcn.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/XKBlib.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <linux/kd.h>

#include "xenv.h"

#define PFX "xenv: "

#define FPTR(f) typeof(f) * p##f
#define FPTR_LINK(xf, dl, f) { \
	xf.p##f = dlsym(dl, #f); \
	if (xf.p##f == NULL) { \
		fprintf(stderr, "missing symbol: %s\n", #f); \
		goto fail; \
	} \
}

struct xstuff {
	Display *display;
	Window window;
	FPTR(XCreateBitmapFromData);
	FPTR(XCreatePixmapCursor);
	FPTR(XFreePixmap);
	FPTR(XOpenDisplay);
	FPTR(XDisplayName);
	FPTR(XCloseDisplay);
	FPTR(XCreateSimpleWindow);
	FPTR(XChangeWindowAttributes);
	FPTR(XSelectInput);
	FPTR(XMapWindow);
	FPTR(XNextEvent);
	FPTR(XCheckTypedEvent);
	FPTR(XWithdrawWindow);
	FPTR(XGrabKeyboard);
	FPTR(XPending);
	FPTR(XLookupKeysym);
	FPTR(XkbSetDetectableAutoRepeat);
	FPTR(XStoreName);
	FPTR(XIconifyWindow);
	FPTR(XMoveResizeWindow);
	FPTR(XInternAtom);
	FPTR(XSetWMHints);
	FPTR(XSync);
};

static struct xstuff g_xstuff;

static Cursor transparent_cursor(struct xstuff *xf, Display *display, Window win)
{
	Cursor cursor;
	Pixmap pix;
	XColor dummy;
	char d = 0;

	memset(&dummy, 0, sizeof(dummy));
	pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1);
	cursor = xf->pXCreatePixmapCursor(display, pix, pix,
			&dummy, &dummy, 0, 0);
	xf->pXFreePixmap(display, pix);
	return cursor;
}

static int x11h_init(int *xenv_flags, const char *window_title)
{
	unsigned int display_width, display_height;
	Display *display;
	XSetWindowAttributes attributes;
	Window win;
	Visual *visual;
	long evt_mask;
	void *x11lib;
	int screen;

	memset(&g_xstuff, 0, sizeof(g_xstuff));
	x11lib = dlopen("libX11.so.6", RTLD_LAZY);
	if (x11lib == NULL) {
		fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror());
		goto fail;
	}
	FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData);
	FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor);
	FPTR_LINK(g_xstuff, x11lib, XFreePixmap);
	FPTR_LINK(g_xstuff, x11lib, XOpenDisplay);
	FPTR_LINK(g_xstuff, x11lib, XDisplayName);
	FPTR_LINK(g_xstuff, x11lib, XCloseDisplay);
	FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow);
	FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes);
	FPTR_LINK(g_xstuff, x11lib, XSelectInput);
	FPTR_LINK(g_xstuff, x11lib, XMapWindow);
	FPTR_LINK(g_xstuff, x11lib, XNextEvent);
	FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent);
	FPTR_LINK(g_xstuff, x11lib, XWithdrawWindow);
	FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard);
	FPTR_LINK(g_xstuff, x11lib, XPending);
	FPTR_LINK(g_xstuff, x11lib, XLookupKeysym);
	FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat);
	FPTR_LINK(g_xstuff, x11lib, XStoreName);
	FPTR_LINK(g_xstuff, x11lib, XIconifyWindow);
	FPTR_LINK(g_xstuff, x11lib, XMoveResizeWindow);
	FPTR_LINK(g_xstuff, x11lib, XInternAtom);
	FPTR_LINK(g_xstuff, x11lib, XSetWMHints);
	FPTR_LINK(g_xstuff, x11lib, XSync);

	//XInitThreads();

	g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL);
	if (display == NULL)
	{
		fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n",
				g_xstuff.pXDisplayName(NULL));
		goto fail2;
	}

	visual = DefaultVisual(display, 0);
	if (visual->class != TrueColor)
		fprintf(stderr, PFX "warning: non true color visual\n");

	printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
		VendorRelease(display), DisplayString(display), ProtocolVersion(display),
		ProtocolRevision(display));

	screen = DefaultScreen(display);

	display_width = DisplayWidth(display, screen);
	display_height = DisplayHeight(display, screen);
	printf(PFX "display is %dx%d\n", display_width, display_height);

	g_xstuff.window = win = g_xstuff.pXCreateSimpleWindow(display,
		RootWindow(display, screen), 0, 0, display_width, display_height,
		0, BlackPixel(display, screen), BlackPixel(display, screen));

	attributes.override_redirect = True;
	attributes.cursor = transparent_cursor(&g_xstuff, display, win);
	g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes);

	if (window_title != NULL)
		g_xstuff.pXStoreName(display, win, window_title);
	evt_mask = ExposureMask | FocusChangeMask | PropertyChangeMask;
	if (xenv_flags && (*xenv_flags & XENV_CAP_KEYS))
		evt_mask |= KeyPressMask | KeyReleaseMask;
	if (xenv_flags && (*xenv_flags & XENV_CAP_MOUSE))
		evt_mask |= ButtonPressMask | ButtonReleaseMask | PointerMotionMask;
	g_xstuff.pXSelectInput(display, win, evt_mask);
	g_xstuff.pXMapWindow(display, win);
	g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
	// XSetIOErrorHandler

	// we don't know when event dispatch will be called, so sync now
	g_xstuff.pXSync(display, False);

	return 0;
fail2:
	dlclose(x11lib);
fail:
	g_xstuff.display = NULL;
	fprintf(stderr, "x11 handling disabled.\n");
	return -1;
}

static void x11h_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed),
			int (*mouseb_cb)(void *cb_arg, int x, int y, int button, int is_pressed),
			int (*mousem_cb)(void *cb_arg, int x, int y),
			void *cb_arg)
{
	XEvent evt;
	int keysym;

	while (g_xstuff.pXPending(g_xstuff.display))
	{
		g_xstuff.pXNextEvent(g_xstuff.display, &evt);
		switch (evt.type)
		{
		case Expose:
			while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt))
				;
			break;

		case KeyPress:
			keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0);
			if (key_cb != NULL)
				key_cb(cb_arg, keysym, 1);
			break;

		case KeyRelease:
			keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0);
			if (key_cb != NULL)
				key_cb(cb_arg, keysym, 0);
			break;

		case ButtonPress:
			if (mouseb_cb != NULL)
				mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y,
					  evt.xbutton.button, 1);
			break;

		case ButtonRelease:
			if (mouseb_cb != NULL)
				mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y,
					  evt.xbutton.button, 0);
			break;

		case MotionNotify:
			if (mousem_cb != NULL)
				mousem_cb(cb_arg, evt.xmotion.x, evt.xmotion.y);
			break;
		}
	}
}

static void x11h_wait_vmstate(void)
{
	Atom wm_state = g_xstuff.pXInternAtom(g_xstuff.display, "WM_STATE", False);
	XEvent evt;
	int i;

	usleep(20000);

	for (i = 0; i < 20; i++) {
		while (g_xstuff.pXPending(g_xstuff.display)) {
			g_xstuff.pXNextEvent(g_xstuff.display, &evt);
			// printf("w event %d\n", evt.type);
			if (evt.type == PropertyNotify && evt.xproperty.atom == wm_state)
				return;
		}
		usleep(200000);
	}

	fprintf(stderr, PFX "timeout waiting for wm_state change\n");
}

static int x11h_minimize(void)
{
	XSetWindowAttributes attributes;
	Display *display = g_xstuff.display;
	Window window = g_xstuff.window;
	int screen = DefaultScreen(g_xstuff.display);
	int display_width, display_height;
	XWMHints wm_hints;
	XEvent evt;

	g_xstuff.pXWithdrawWindow(display, window, screen);

	attributes.override_redirect = False;
	g_xstuff.pXChangeWindowAttributes(display, window,
		CWOverrideRedirect, &attributes);

	wm_hints.flags = StateHint;
	wm_hints.initial_state = IconicState;
	g_xstuff.pXSetWMHints(display, window, &wm_hints);

	g_xstuff.pXMapWindow(display, window);

	while (g_xstuff.pXNextEvent(display, &evt) == 0)
	{
		// printf("m event %d\n", evt.type);
		switch (evt.type)
		{
			case FocusIn:
				goto out;
			default:
				break;
		}
	}

out:
	g_xstuff.pXWithdrawWindow(display, window, screen);

	// must wait for some magic vmstate property change before setting override_redirect
	x11h_wait_vmstate();

	attributes.override_redirect = True;
	g_xstuff.pXChangeWindowAttributes(display, window,
		CWOverrideRedirect, &attributes);

	// fixup window after resize on override_redirect loss
	display_width = DisplayWidth(display, screen);
	display_height = DisplayHeight(display, screen);
	g_xstuff.pXMoveResizeWindow(display, window, 0, 0, display_width, display_height);

	g_xstuff.pXMapWindow(display, window);
	g_xstuff.pXGrabKeyboard(display, window, False, GrabModeAsync, GrabModeAsync, CurrentTime);
	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);

	// we don't know when event dispatch will be called, so sync now
	g_xstuff.pXSync(display, False);

	return 0;
}

static struct termios g_kbd_termios_saved;
static int g_kbdfd = -1;

static int tty_init(void)
{
	struct termios kbd_termios;
	int mode;

	g_kbdfd = open("/dev/tty", O_RDWR);
	if (g_kbdfd == -1) {
		perror(PFX "open /dev/tty");
		return -1;
	}

	if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) {
		perror(PFX "(not hiding FB): KDGETMODE");
		goto fail;
	}

	if (tcgetattr(g_kbdfd, &kbd_termios) == -1) {
		perror(PFX "tcgetattr");
		goto fail;
	}

	g_kbd_termios_saved = kbd_termios;
	kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG);
	kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
	kbd_termios.c_cc[VMIN] = 0;
	kbd_termios.c_cc[VTIME] = 0;

	if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) {
		perror(PFX "tcsetattr");
		goto fail;
	}

	if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) {
		perror(PFX "KDSETMODE KD_GRAPHICS");
		tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved);
		goto fail;
	}

	return 0;

fail:
	close(g_kbdfd);
	g_kbdfd = -1;
	return -1;
}

static void tty_end(void)
{
	if (g_kbdfd < 0)
		return;

	if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1)
		perror(PFX "KDSETMODE KD_TEXT");

	if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1)
		perror(PFX "tcsetattr");

	close(g_kbdfd);
	g_kbdfd = -1;
}

int xenv_init(int *xenv_flags, const char *window_title)
{
	int ret;

	ret = x11h_init(xenv_flags, window_title);
	if (ret == 0)
		goto out;

	if (xenv_flags != NULL)
		*xenv_flags &= ~(XENV_CAP_KEYS | XENV_CAP_MOUSE); /* TODO? */
	ret = tty_init();
	if (ret == 0)
		goto out;

	fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n");
	ret = -1;
out:
	return ret;
}

int xenv_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed),
		int (*mouseb_cb)(void *cb_arg, int x, int y, int button, int is_pressed),
		int (*mousem_cb)(void *cb_arg, int x, int y),
		void *cb_arg)
{
	if (g_xstuff.display) {
		x11h_update(key_cb, mouseb_cb, mousem_cb, cb_arg);
		return 0;
	}

	// TODO: read tty?
	return -1;
}

/* blocking minimize until user maximizes again */
int xenv_minimize(void)
{
	int ret;

	if (g_xstuff.display) {
		xenv_update(NULL, NULL, NULL, NULL);
		ret = x11h_minimize();
		xenv_update(NULL, NULL, NULL, NULL);
		return ret;
	}

	return -1;
}

void xenv_finish(void)
{
	// TODO: cleanup X?
	tty_end();
}

#if 0
int main()
{
	int i, r, d;

	xenv_init("just a test");

	for (i = 0; i < 5; i++) {
		while ((r = xenv_update(&d)) > 0)
			printf("%d %x %d\n", d, r, r);
		sleep(1);

		if (i == 1)
			xenv_minimize();
		printf("ll %d\n", i);
	}

	printf("xenv_finish..\n");
	xenv_finish();

	return 0;
}
#endif
Commit	Line	Data
698517be	1	/*
a805c855	2	* (C) Gražvydas "notaz" Ignotas, 2009-2012
698517be	3	*
	4	* This work is licensed under the terms of any of these licenses
	5	* (at your option):
	6	* - GNU GPL, version 2 or later.
	7	* - GNU LGPL, version 2.1 or later.
	8	* See the COPYING file in the top-level directory.
	9	*/
	10
	11	#include <stdio.h>
	12	#include <string.h>
	13	#include <pthread.h>
	14
	15	#include <dlfcn.h>
	16	#include <X11/Xlib.h>
	17	#include <X11/Xutil.h>
0b49a8f7	18	#include <X11/XKBlib.h>
698517be	19
	20	#include <sys/types.h>
	21	#include <sys/stat.h>
	22	#include <fcntl.h>
	23	#include <unistd.h>
	24	#include <sys/ioctl.h>
	25	#include <termios.h>
	26	#include <linux/kd.h>
	27
3a321131	28	#include "xenv.h"
3a321131	29
0b49a8f7	30	#define PFX "xenv: "
698517be	31
	32	#define FPTR(f) typeof(f) * p##f
	33	#define FPTR_LINK(xf, dl, f) { \
	34	xf.p##f = dlsym(dl, #f); \
	35	if (xf.p##f == NULL) { \
	36	fprintf(stderr, "missing symbol: %s\n", #f); \
	37	goto fail; \
	38	} \
	39	}
	40
0b49a8f7	41	struct xstuff {
0b49a8f7	42	Display *display;
a805c855	43	Window window;
0b49a8f7	44	FPTR(XCreateBitmapFromData);
	45	FPTR(XCreatePixmapCursor);
	46	FPTR(XFreePixmap);
	47	FPTR(XOpenDisplay);
	48	FPTR(XDisplayName);
	49	FPTR(XCloseDisplay);
	50	FPTR(XCreateSimpleWindow);
	51	FPTR(XChangeWindowAttributes);
	52	FPTR(XSelectInput);
	53	FPTR(XMapWindow);
	54	FPTR(XNextEvent);
	55	FPTR(XCheckTypedEvent);
a805c855	56	FPTR(XWithdrawWindow);
0b49a8f7	57	FPTR(XGrabKeyboard);
	58	FPTR(XPending);
	59	FPTR(XLookupKeysym);
	60	FPTR(XkbSetDetectableAutoRepeat);
a805c855	61	FPTR(XStoreName);
	62	FPTR(XIconifyWindow);
	63	FPTR(XMoveResizeWindow);
	64	FPTR(XInternAtom);
	65	FPTR(XSetWMHints);
	66	FPTR(XSync);
698517be	67	};
698517be	68
0b49a8f7	69	static struct xstuff g_xstuff;
698517be	70
0b49a8f7	71	static Cursor transparent_cursor(struct xstuff xf, Display display, Window win)
698517be	72	{
	73	Cursor cursor;
	74	Pixmap pix;
	75	XColor dummy;
	76	char d = 0;
	77
	78	memset(&dummy, 0, sizeof(dummy));
	79	pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1);
	80	cursor = xf->pXCreatePixmapCursor(display, pix, pix,
	81	&dummy, &dummy, 0, 0);
	82	xf->pXFreePixmap(display, pix);
	83	return cursor;
	84	}
	85
3a321131	86	static int x11h_init(int xenv_flags, const char window_title)
698517be	87	{
698517be	88	unsigned int display_width, display_height;
0b49a8f7	89	Display *display;
698517be	90	XSetWindowAttributes attributes;
698517be	91	Window win;
698517be	92	Visual *visual;
3a321131	93	long evt_mask;
698517be	94	void *x11lib;
	95	int screen;
	96
0b49a8f7	97	memset(&g_xstuff, 0, sizeof(g_xstuff));
698517be	98	x11lib = dlopen("libX11.so.6", RTLD_LAZY);
	99	if (x11lib == NULL) {
	100	fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror());
	101	goto fail;
	102	}
0b49a8f7	103	FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData);
	104	FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor);
	105	FPTR_LINK(g_xstuff, x11lib, XFreePixmap);
	106	FPTR_LINK(g_xstuff, x11lib, XOpenDisplay);
	107	FPTR_LINK(g_xstuff, x11lib, XDisplayName);
	108	FPTR_LINK(g_xstuff, x11lib, XCloseDisplay);
	109	FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow);
	110	FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes);
	111	FPTR_LINK(g_xstuff, x11lib, XSelectInput);
	112	FPTR_LINK(g_xstuff, x11lib, XMapWindow);
	113	FPTR_LINK(g_xstuff, x11lib, XNextEvent);
	114	FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent);
a805c855	115	FPTR_LINK(g_xstuff, x11lib, XWithdrawWindow);
0b49a8f7	116	FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard);
	117	FPTR_LINK(g_xstuff, x11lib, XPending);
	118	FPTR_LINK(g_xstuff, x11lib, XLookupKeysym);
	119	FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat);
a805c855	120	FPTR_LINK(g_xstuff, x11lib, XStoreName);
	121	FPTR_LINK(g_xstuff, x11lib, XIconifyWindow);
	122	FPTR_LINK(g_xstuff, x11lib, XMoveResizeWindow);
	123	FPTR_LINK(g_xstuff, x11lib, XInternAtom);
	124	FPTR_LINK(g_xstuff, x11lib, XSetWMHints);
	125	FPTR_LINK(g_xstuff, x11lib, XSync);
698517be	126
	127	//XInitThreads();
	128
0b49a8f7	129	g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL);
698517be	130	if (display == NULL)
	131	{
	132	fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n",
0b49a8f7	133	g_xstuff.pXDisplayName(NULL));
698517be	134	goto fail2;
	135	}
	136
	137	visual = DefaultVisual(display, 0);
	138	if (visual->class != TrueColor)
	139	fprintf(stderr, PFX "warning: non true color visual\n");
	140
	141	printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
	142	VendorRelease(display), DisplayString(display), ProtocolVersion(display),
	143	ProtocolRevision(display));
	144
	145	screen = DefaultScreen(display);
	146
	147	display_width = DisplayWidth(display, screen);
	148	display_height = DisplayHeight(display, screen);
	149	printf(PFX "display is %dx%d\n", display_width, display_height);
	150
a805c855	151	g_xstuff.window = win = g_xstuff.pXCreateSimpleWindow(display,
	152	RootWindow(display, screen), 0, 0, display_width, display_height,
	153	0, BlackPixel(display, screen), BlackPixel(display, screen));
698517be	154
698517be	155	attributes.override_redirect = True;
0b49a8f7	156	attributes.cursor = transparent_cursor(&g_xstuff, display, win);
0b49a8f7	157	g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect \| CWCursor, &attributes);
698517be	158
3a321131	159	if (window_title != NULL)
	160	g_xstuff.pXStoreName(display, win, window_title);
	161	evt_mask = ExposureMask \| FocusChangeMask \| PropertyChangeMask;
	162	if (xenv_flags && (*xenv_flags & XENV_CAP_KEYS))
	163	evt_mask \|= KeyPressMask \| KeyReleaseMask;
	164	if (xenv_flags && (*xenv_flags & XENV_CAP_MOUSE))
	165	evt_mask \|= ButtonPressMask \| ButtonReleaseMask \| PointerMotionMask;
	166	g_xstuff.pXSelectInput(display, win, evt_mask);
0b49a8f7	167	g_xstuff.pXMapWindow(display, win);
	168	g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
	169	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
698517be	170	// XSetIOErrorHandler
698517be	171
a805c855	172	// we don't know when event dispatch will be called, so sync now
	173	g_xstuff.pXSync(display, False);
	174
0b49a8f7	175	return 0;
	176	fail2:
	177	dlclose(x11lib);
	178	fail:
	179	g_xstuff.display = NULL;
	180	fprintf(stderr, "x11 handling disabled.\n");
	181	return -1;
	182	}
	183
3a321131	184	static void x11h_update(int (key_cb)(void cb_arg, int kc, int is_pressed),
	185	int (mouseb_cb)(void cb_arg, int x, int y, int button, int is_pressed),
	186	int (mousem_cb)(void cb_arg, int x, int y),
	187	void *cb_arg)
0b49a8f7	188	{
0b49a8f7	189	XEvent evt;
3a321131	190	int keysym;
0b49a8f7	191
0b49a8f7	192	while (g_xstuff.pXPending(g_xstuff.display))
698517be	193	{
0b49a8f7	194	g_xstuff.pXNextEvent(g_xstuff.display, &evt);
0b49a8f7	195	switch (evt.type)
698517be	196	{
3a321131	197	case Expose:
	198	while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt))
	199	;
	200	break;
	201
	202	case KeyPress:
	203	keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0);
	204	if (key_cb != NULL)
	205	key_cb(cb_arg, keysym, 1);
	206	break;
	207
	208	case KeyRelease:
	209	keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0);
	210	if (key_cb != NULL)
	211	key_cb(cb_arg, keysym, 0);
	212	break;
	213
	214	case ButtonPress:
	215	if (mouseb_cb != NULL)
	216	mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y,
	217	evt.xbutton.button, 1);
	218	break;
	219
	220	case ButtonRelease:
	221	if (mouseb_cb != NULL)
	222	mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y,
	223	evt.xbutton.button, 0);
	224	break;
	225
	226	case MotionNotify:
	227	if (mousem_cb != NULL)
	228	mousem_cb(cb_arg, evt.xmotion.x, evt.xmotion.y);
	229	break;
698517be	230	}
698517be	231	}
698517be	232	}
698517be	233
a805c855	234	static void x11h_wait_vmstate(void)
	235	{
	236	Atom wm_state = g_xstuff.pXInternAtom(g_xstuff.display, "WM_STATE", False);
	237	XEvent evt;
	238	int i;
	239
	240	usleep(20000);
	241
	242	for (i = 0; i < 20; i++) {
	243	while (g_xstuff.pXPending(g_xstuff.display)) {
	244	g_xstuff.pXNextEvent(g_xstuff.display, &evt);
	245	// printf("w event %d\n", evt.type);
	246	if (evt.type == PropertyNotify && evt.xproperty.atom == wm_state)
	247	return;
	248	}
	249	usleep(200000);
	250	}
	251
3a321131	252	fprintf(stderr, PFX "timeout waiting for wm_state change\n");
a805c855	253	}
	254
	255	static int x11h_minimize(void)
	256	{
	257	XSetWindowAttributes attributes;
	258	Display *display = g_xstuff.display;
	259	Window window = g_xstuff.window;
	260	int screen = DefaultScreen(g_xstuff.display);
	261	int display_width, display_height;
	262	XWMHints wm_hints;
	263	XEvent evt;
	264
	265	g_xstuff.pXWithdrawWindow(display, window, screen);
	266
	267	attributes.override_redirect = False;
	268	g_xstuff.pXChangeWindowAttributes(display, window,
	269	CWOverrideRedirect, &attributes);
	270
	271	wm_hints.flags = StateHint;
	272	wm_hints.initial_state = IconicState;
	273	g_xstuff.pXSetWMHints(display, window, &wm_hints);
	274
	275	g_xstuff.pXMapWindow(display, window);
	276
	277	while (g_xstuff.pXNextEvent(display, &evt) == 0)
	278	{
	279	// printf("m event %d\n", evt.type);
	280	switch (evt.type)
	281	{
	282	case FocusIn:
	283	goto out;
	284	default:
	285	break;
	286	}
	287	}
	288
	289	out:
	290	g_xstuff.pXWithdrawWindow(display, window, screen);
	291
	292	// must wait for some magic vmstate property change before setting override_redirect
	293	x11h_wait_vmstate();
	294
	295	attributes.override_redirect = True;
	296	g_xstuff.pXChangeWindowAttributes(display, window,
	297	CWOverrideRedirect, &attributes);
	298
	299	// fixup window after resize on override_redirect loss
	300	display_width = DisplayWidth(display, screen);
	301	display_height = DisplayHeight(display, screen);
	302	g_xstuff.pXMoveResizeWindow(display, window, 0, 0, display_width, display_height);
	303
	304	g_xstuff.pXMapWindow(display, window);
	305	g_xstuff.pXGrabKeyboard(display, window, False, GrabModeAsync, GrabModeAsync, CurrentTime);
	306	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
	307
	308	// we don't know when event dispatch will be called, so sync now
	309	g_xstuff.pXSync(display, False);
	310
	311	return 0;
	312	}
	313
698517be	314	static struct termios g_kbd_termios_saved;
0b49a8f7	315	static int g_kbdfd = -1;
698517be	316
0b49a8f7	317	static int tty_init(void)
698517be	318	{
	319	struct termios kbd_termios;
	320	int mode;
	321
	322	g_kbdfd = open("/dev/tty", O_RDWR);
	323	if (g_kbdfd == -1) {
	324	perror(PFX "open /dev/tty");
0b49a8f7	325	return -1;
698517be	326	}
	327
	328	if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) {
	329	perror(PFX "(not hiding FB): KDGETMODE");
	330	goto fail;
	331	}
	332
	333	if (tcgetattr(g_kbdfd, &kbd_termios) == -1) {
	334	perror(PFX "tcgetattr");
	335	goto fail;
	336	}
	337
	338	g_kbd_termios_saved = kbd_termios;
	339	kbd_termios.c_lflag &= ~(ICANON \| ECHO); // \| ISIG);
	340	kbd_termios.c_iflag &= ~(ISTRIP \| IGNCR \| ICRNL \| INLCR \| IXOFF \| IXON);
	341	kbd_termios.c_cc[VMIN] = 0;
	342	kbd_termios.c_cc[VTIME] = 0;
	343
	344	if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) {
	345	perror(PFX "tcsetattr");
	346	goto fail;
	347	}
	348
	349	if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) {
	350	perror(PFX "KDSETMODE KD_GRAPHICS");
	351	tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved);
	352	goto fail;
	353	}
	354
0b49a8f7	355	return 0;
698517be	356
	357	fail:
	358	close(g_kbdfd);
	359	g_kbdfd = -1;
0b49a8f7	360	return -1;
698517be	361	}
698517be	362
0b49a8f7	363	static void tty_end(void)
698517be	364	{
	365	if (g_kbdfd < 0)
	366	return;
	367
	368	if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1)
	369	perror(PFX "KDSETMODE KD_TEXT");
	370
	371	if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1)
	372	perror(PFX "tcsetattr");
	373
	374	close(g_kbdfd);
	375	g_kbdfd = -1;
	376	}
	377
3a321131	378	int xenv_init(int xenv_flags, const char window_title)
698517be	379	{
698517be	380	int ret;
698517be	381
3a321131	382	ret = x11h_init(xenv_flags, window_title);
0b49a8f7	383	if (ret == 0)
3a321131	384	goto out;
698517be	385
3a321131	386	if (xenv_flags != NULL)
3a321131	387	xenv_flags &= ~(XENV_CAP_KEYS \| XENV_CAP_MOUSE); / TODO? */
0b49a8f7	388	ret = tty_init();
0b49a8f7	389	if (ret == 0)
3a321131	390	goto out;
698517be	391
0b49a8f7	392	fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n");
3a321131	393	ret = -1;
	394	out:
	395	return ret;
698517be	396	}
698517be	397
3a321131	398	int xenv_update(int (key_cb)(void cb_arg, int kc, int is_pressed),
	399	int (mouseb_cb)(void cb_arg, int x, int y, int button, int is_pressed),
	400	int (mousem_cb)(void cb_arg, int x, int y),
	401	void *cb_arg)
698517be	402	{
3a321131	403	if (g_xstuff.display) {
	404	x11h_update(key_cb, mouseb_cb, mousem_cb, cb_arg);
	405	return 0;
	406	}
698517be	407
0b49a8f7	408	// TODO: read tty?
0b49a8f7	409	return -1;
698517be	410	}
698517be	411
3a321131	412	/* blocking minimize until user maximizes again */
a805c855	413	int xenv_minimize(void)
a805c855	414	{
3a321131	415	int ret;
a805c855	416
a805c855	417	if (g_xstuff.display) {
3a321131	418	xenv_update(NULL, NULL, NULL, NULL);
a805c855	419	ret = x11h_minimize();
3a321131	420	xenv_update(NULL, NULL, NULL, NULL);
a805c855	421	return ret;
	422	}
	423
	424	return -1;
	425	}
	426
0b49a8f7	427	void xenv_finish(void)
698517be	428	{
0b49a8f7	429	// TODO: cleanup X?
0b49a8f7	430	tty_end();
698517be	431	}
a805c855	432
	433	#if 0
	434	int main()
	435	{
	436	int i, r, d;
	437
	438	xenv_init("just a test");
	439
	440	for (i = 0; i < 5; i++) {
	441	while ((r = xenv_update(&d)) > 0)
	442	printf("%d %x %d\n", d, r, r);
	443	sleep(1);
	444
	445	if (i == 1)
	446	xenv_minimize();
	447	printf("ll %d\n", i);
	448	}
	449
	450	printf("xenv_finish..\n");
	451	xenv_finish();
	452
	453	return 0;
	454	}
	455	#endif