[sdl_omap.git] / src / video / omapdss / 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(XkbKeycodeToKeysym);
	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, XkbKeycodeToKeysym);
	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;
}

int xenv_keycode_to_keysym(int kc, int shift)
{
	if (g_xstuff.display)
		return g_xstuff.pXkbKeycodeToKeysym(g_xstuff.display,
			kc, 0, shift);

	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
83b5751b	1	/*
e1837b2c	2	* (C) Gražvydas "notaz" Ignotas, 2009-2012
83b5751b	3	*
f9b3f440	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.
83b5751b	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>
f9b3f440	18	#include <X11/XKBlib.h>
83b5751b	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
090bcb85	28	#include "xenv.h"
090bcb85	29
f9b3f440	30	#define PFX "xenv: "
83b5751b	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
f9b3f440	41	struct xstuff {
f9b3f440	42	Display *display;
090bcb85	43	Window window;
f9b3f440	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);
090bcb85	56	FPTR(XWithdrawWindow);
f9b3f440	57	FPTR(XGrabKeyboard);
	58	FPTR(XPending);
	59	FPTR(XLookupKeysym);
	60	FPTR(XkbSetDetectableAutoRepeat);
89df2746	61	FPTR(XkbKeycodeToKeysym);
090bcb85	62	FPTR(XStoreName);
	63	FPTR(XIconifyWindow);
	64	FPTR(XMoveResizeWindow);
	65	FPTR(XInternAtom);
	66	FPTR(XSetWMHints);
	67	FPTR(XSync);
83b5751b	68	};
83b5751b	69
f9b3f440	70	static struct xstuff g_xstuff;
83b5751b	71
f9b3f440	72	static Cursor transparent_cursor(struct xstuff xf, Display display, Window win)
83b5751b	73	{
	74	Cursor cursor;
	75	Pixmap pix;
	76	XColor dummy;
	77	char d = 0;
	78
	79	memset(&dummy, 0, sizeof(dummy));
	80	pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1);
	81	cursor = xf->pXCreatePixmapCursor(display, pix, pix,
	82	&dummy, &dummy, 0, 0);
	83	xf->pXFreePixmap(display, pix);
	84	return cursor;
	85	}
	86
090bcb85	87	static int x11h_init(int xenv_flags, const char window_title)
83b5751b	88	{
83b5751b	89	unsigned int display_width, display_height;
f9b3f440	90	Display *display;
83b5751b	91	XSetWindowAttributes attributes;
83b5751b	92	Window win;
83b5751b	93	Visual *visual;
090bcb85	94	long evt_mask;
83b5751b	95	void *x11lib;
	96	int screen;
	97
f9b3f440	98	memset(&g_xstuff, 0, sizeof(g_xstuff));
83b5751b	99	x11lib = dlopen("libX11.so.6", RTLD_LAZY);
	100	if (x11lib == NULL) {
	101	fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror());
	102	goto fail;
	103	}
f9b3f440	104	FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData);
	105	FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor);
	106	FPTR_LINK(g_xstuff, x11lib, XFreePixmap);
	107	FPTR_LINK(g_xstuff, x11lib, XOpenDisplay);
	108	FPTR_LINK(g_xstuff, x11lib, XDisplayName);
	109	FPTR_LINK(g_xstuff, x11lib, XCloseDisplay);
	110	FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow);
	111	FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes);
	112	FPTR_LINK(g_xstuff, x11lib, XSelectInput);
	113	FPTR_LINK(g_xstuff, x11lib, XMapWindow);
	114	FPTR_LINK(g_xstuff, x11lib, XNextEvent);
	115	FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent);
090bcb85	116	FPTR_LINK(g_xstuff, x11lib, XWithdrawWindow);
f9b3f440	117	FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard);
	118	FPTR_LINK(g_xstuff, x11lib, XPending);
	119	FPTR_LINK(g_xstuff, x11lib, XLookupKeysym);
	120	FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat);
89df2746	121	FPTR_LINK(g_xstuff, x11lib, XkbKeycodeToKeysym);
090bcb85	122	FPTR_LINK(g_xstuff, x11lib, XStoreName);
	123	FPTR_LINK(g_xstuff, x11lib, XIconifyWindow);
	124	FPTR_LINK(g_xstuff, x11lib, XMoveResizeWindow);
	125	FPTR_LINK(g_xstuff, x11lib, XInternAtom);
	126	FPTR_LINK(g_xstuff, x11lib, XSetWMHints);
	127	FPTR_LINK(g_xstuff, x11lib, XSync);
83b5751b	128
	129	//XInitThreads();
	130
f9b3f440	131	g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL);
83b5751b	132	if (display == NULL)
	133	{
	134	fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n",
f9b3f440	135	g_xstuff.pXDisplayName(NULL));
83b5751b	136	goto fail2;
	137	}
	138
	139	visual = DefaultVisual(display, 0);
	140	if (visual->class != TrueColor)
	141	fprintf(stderr, PFX "warning: non true color visual\n");
	142
	143	printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
	144	VendorRelease(display), DisplayString(display), ProtocolVersion(display),
	145	ProtocolRevision(display));
	146
	147	screen = DefaultScreen(display);
	148
	149	display_width = DisplayWidth(display, screen);
	150	display_height = DisplayHeight(display, screen);
	151	printf(PFX "display is %dx%d\n", display_width, display_height);
	152
090bcb85	153	g_xstuff.window = win = g_xstuff.pXCreateSimpleWindow(display,
	154	RootWindow(display, screen), 0, 0, display_width, display_height,
	155	0, BlackPixel(display, screen), BlackPixel(display, screen));
83b5751b	156
83b5751b	157	attributes.override_redirect = True;
f9b3f440	158	attributes.cursor = transparent_cursor(&g_xstuff, display, win);
f9b3f440	159	g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect \| CWCursor, &attributes);
83b5751b	160
090bcb85	161	if (window_title != NULL)
	162	g_xstuff.pXStoreName(display, win, window_title);
	163	evt_mask = ExposureMask \| FocusChangeMask \| PropertyChangeMask;
	164	if (xenv_flags && (*xenv_flags & XENV_CAP_KEYS))
	165	evt_mask \|= KeyPressMask \| KeyReleaseMask;
	166	if (xenv_flags && (*xenv_flags & XENV_CAP_MOUSE))
	167	evt_mask \|= ButtonPressMask \| ButtonReleaseMask \| PointerMotionMask;
	168	g_xstuff.pXSelectInput(display, win, evt_mask);
f9b3f440	169	g_xstuff.pXMapWindow(display, win);
	170	g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
	171	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
83b5751b	172	// XSetIOErrorHandler
83b5751b	173
090bcb85	174	// we don't know when event dispatch will be called, so sync now
	175	g_xstuff.pXSync(display, False);
	176
f9b3f440	177	return 0;
	178	fail2:
	179	dlclose(x11lib);
	180	fail:
	181	g_xstuff.display = NULL;
	182	fprintf(stderr, "x11 handling disabled.\n");
	183	return -1;
	184	}
	185
e1837b2c	186	static void x11h_update(int (key_cb)(void cb_arg, int kc, int is_pressed),
	187	int (mouseb_cb)(void cb_arg, int x, int y, int button, int is_pressed),
	188	int (mousem_cb)(void cb_arg, int x, int y),
	189	void *cb_arg)
f9b3f440	190	{
f9b3f440	191	XEvent evt;
e1837b2c	192	int keysym;
f9b3f440	193
f9b3f440	194	while (g_xstuff.pXPending(g_xstuff.display))
83b5751b	195	{
f9b3f440	196	g_xstuff.pXNextEvent(g_xstuff.display, &evt);
f9b3f440	197	switch (evt.type)
83b5751b	198	{
e1837b2c	199	case Expose:
	200	while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt))
	201	;
	202	break;
	203
	204	case KeyPress:
	205	keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0);
	206	if (key_cb != NULL)
	207	key_cb(cb_arg, keysym, 1);
	208	break;
	209
	210	case KeyRelease:
	211	keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0);
	212	if (key_cb != NULL)
	213	key_cb(cb_arg, keysym, 0);
	214	break;
	215
	216	case ButtonPress:
	217	if (mouseb_cb != NULL)
	218	mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y,
	219	evt.xbutton.button, 1);
	220	break;
	221
	222	case ButtonRelease:
	223	if (mouseb_cb != NULL)
	224	mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y,
	225	evt.xbutton.button, 0);
	226	break;
	227
	228	case MotionNotify:
	229	if (mousem_cb != NULL)
	230	mousem_cb(cb_arg, evt.xmotion.x, evt.xmotion.y);
	231	break;
83b5751b	232	}
83b5751b	233	}
83b5751b	234	}
83b5751b	235
090bcb85	236	static void x11h_wait_vmstate(void)
	237	{
	238	Atom wm_state = g_xstuff.pXInternAtom(g_xstuff.display, "WM_STATE", False);
	239	XEvent evt;
	240	int i;
	241
	242	usleep(20000);
	243
	244	for (i = 0; i < 20; i++) {
	245	while (g_xstuff.pXPending(g_xstuff.display)) {
	246	g_xstuff.pXNextEvent(g_xstuff.display, &evt);
	247	// printf("w event %d\n", evt.type);
	248	if (evt.type == PropertyNotify && evt.xproperty.atom == wm_state)
	249	return;
	250	}
	251	usleep(200000);
	252	}
	253
	254	fprintf(stderr, PFX "timeout waiting for wm_state change\n");
	255	}
	256
	257	static int x11h_minimize(void)
	258	{
	259	XSetWindowAttributes attributes;
	260	Display *display = g_xstuff.display;
	261	Window window = g_xstuff.window;
	262	int screen = DefaultScreen(g_xstuff.display);
	263	int display_width, display_height;
	264	XWMHints wm_hints;
	265	XEvent evt;
	266
	267	g_xstuff.pXWithdrawWindow(display, window, screen);
	268
	269	attributes.override_redirect = False;
	270	g_xstuff.pXChangeWindowAttributes(display, window,
	271	CWOverrideRedirect, &attributes);
	272
	273	wm_hints.flags = StateHint;
	274	wm_hints.initial_state = IconicState;
	275	g_xstuff.pXSetWMHints(display, window, &wm_hints);
	276
	277	g_xstuff.pXMapWindow(display, window);
	278
	279	while (g_xstuff.pXNextEvent(display, &evt) == 0)
	280	{
	281	// printf("m event %d\n", evt.type);
	282	switch (evt.type)
	283	{
	284	case FocusIn:
	285	goto out;
	286	default:
	287	break;
	288	}
	289	}
	290
	291	out:
	292	g_xstuff.pXWithdrawWindow(display, window, screen);
	293
	294	// must wait for some magic vmstate property change before setting override_redirect
	295	x11h_wait_vmstate();
	296
	297	attributes.override_redirect = True;
	298	g_xstuff.pXChangeWindowAttributes(display, window,
	299	CWOverrideRedirect, &attributes);
300
301	// fixup window after resize on override_redirect loss
302	display_width = DisplayWidth(display, screen);
303	display_height = DisplayHeight(display, screen);
304	g_xstuff.pXMoveResizeWindow(display, window, 0, 0, display_width, display_height);
305
306	g_xstuff.pXMapWindow(display, window);
307	g_xstuff.pXGrabKeyboard(display, window, False, GrabModeAsync, GrabModeAsync, CurrentTime);
308	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
309
310	// we don't know when event dispatch will be called, so sync now
311	g_xstuff.pXSync(display, False);
312
313	return 0;
314	}
315
83b5751b	316	static struct termios g_kbd_termios_saved;
f9b3f440	317	static int g_kbdfd = -1;
83b5751b	318
f9b3f440	319	static int tty_init(void)
83b5751b	320	{
	321	struct termios kbd_termios;
	322	int mode;
	323
	324	g_kbdfd = open("/dev/tty", O_RDWR);
	325	if (g_kbdfd == -1) {
	326	perror(PFX "open /dev/tty");
f9b3f440	327	return -1;
83b5751b	328	}
	329
	330	if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) {
	331	perror(PFX "(not hiding FB): KDGETMODE");
	332	goto fail;
	333	}
	334
	335	if (tcgetattr(g_kbdfd, &kbd_termios) == -1) {
	336	perror(PFX "tcgetattr");
	337	goto fail;
	338	}
	339
	340	g_kbd_termios_saved = kbd_termios;
	341	kbd_termios.c_lflag &= ~(ICANON \| ECHO); // \| ISIG);
	342	kbd_termios.c_iflag &= ~(ISTRIP \| IGNCR \| ICRNL \| INLCR \| IXOFF \| IXON);
	343	kbd_termios.c_cc[VMIN] = 0;
	344	kbd_termios.c_cc[VTIME] = 0;
	345
	346	if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) {
	347	perror(PFX "tcsetattr");
	348	goto fail;
	349	}
	350
	351	if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) {
	352	perror(PFX "KDSETMODE KD_GRAPHICS");
	353	tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved);
	354	goto fail;
	355	}
	356
f9b3f440	357	return 0;
83b5751b	358
	359	fail:
	360	close(g_kbdfd);
	361	g_kbdfd = -1;
f9b3f440	362	return -1;
83b5751b	363	}
83b5751b	364
f9b3f440	365	static void tty_end(void)
83b5751b	366	{
	367	if (g_kbdfd < 0)
	368	return;
	369
	370	if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1)
	371	perror(PFX "KDSETMODE KD_TEXT");
	372
	373	if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1)
	374	perror(PFX "tcsetattr");
	375
	376	close(g_kbdfd);
	377	g_kbdfd = -1;
	378	}
	379
090bcb85	380	int xenv_init(int xenv_flags, const char window_title)
83b5751b	381	{
83b5751b	382	int ret;
83b5751b	383
090bcb85	384	ret = x11h_init(xenv_flags, window_title);
090bcb85	385	if (ret == 0)
e1837b2c	386	goto out;
83b5751b	387
090bcb85	388	if (xenv_flags != NULL)
090bcb85	389	xenv_flags &= ~(XENV_CAP_KEYS \| XENV_CAP_MOUSE); / TODO? */
f9b3f440	390	ret = tty_init();
f9b3f440	391	if (ret == 0)
e1837b2c	392	goto out;
83b5751b	393
f9b3f440	394	fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n");
e1837b2c	395	ret = -1;
e1837b2c	396	out:
e1837b2c	397	return ret;
83b5751b	398	}
83b5751b	399
e1837b2c	400	int xenv_update(int (key_cb)(void cb_arg, int kc, int is_pressed),
	401	int (mouseb_cb)(void cb_arg, int x, int y, int button, int is_pressed),
	402	int (mousem_cb)(void cb_arg, int x, int y),
	403	void *cb_arg)
83b5751b	404	{
e1837b2c	405	if (g_xstuff.display) {
	406	x11h_update(key_cb, mouseb_cb, mousem_cb, cb_arg);
	407	return 0;
	408	}
83b5751b	409
f9b3f440	410	// TODO: read tty?
f9b3f440	411	return -1;
83b5751b	412	}
83b5751b	413
090bcb85	414	/* blocking minimize until user maximizes again */
	415	int xenv_minimize(void)
	416	{
	417	int ret;
	418
	419	if (g_xstuff.display) {
	420	xenv_update(NULL, NULL, NULL, NULL);
	421	ret = x11h_minimize();
	422	xenv_update(NULL, NULL, NULL, NULL);
	423	return ret;
	424	}
	425
	426	return -1;
	427	}
	428
89df2746	429	int xenv_keycode_to_keysym(int kc, int shift)
	430	{
	431	if (g_xstuff.display)
	432	return g_xstuff.pXkbKeycodeToKeysym(g_xstuff.display,
	433	kc, 0, shift);
	434
	435	return -1;
	436	}
	437
f9b3f440	438	void xenv_finish(void)
83b5751b	439	{
f9b3f440	440	// TODO: cleanup X?
f9b3f440	441	tty_end();
83b5751b	442	}
090bcb85	443
	444	#if 0
	445	int main()
	446	{
	447	int i, r, d;
	448
	449	xenv_init("just a test");
	450
	451	for (i = 0; i < 5; i++) {
	452	while ((r = xenv_update(&d)) > 0)
	453	printf("%d %x %d\n", d, r, r);
	454	sleep(1);
	455
	456	if (i == 1)
	457	xenv_minimize();
	458	printf("ll %d\n", i);
	459	}
	460
	461	printf("xenv_finish..\n");
	462	xenv_finish();
	463
	464	return 0;
	465	}
	466	#endif