ok

mdm/xserver.c

@@ -0,0 +1,163 @@
+#include <stdlib.h>
+#define _MILSKO
+#define USE_X11
+#include "mdm.h"
+
+#include "stb_ds.h"
+
+static pid_t xserver;
+static int   got_usr1;
+
+Display*	xdisplay;
+pthread_t	xthread;
+pthread_mutex_t xmutex;
+
+static void catch_usr1(int sig) {
+	(void)sig;
+
+	got_usr1 = 1;
+}
+
+int launch_x(void) {
+	got_usr1 = 0;
+
+	signal(SIGUSR1, catch_usr1);
+
+	if((xserver = fork()) == 0) {
+		signal(SIGUSR1, SIG_IGN);
+		execlp("X", "X", ":0", NULL);
+		_exit(-1);
+	} else {
+		while(!got_usr1) {
+			if(waitpid(xserver, NULL, WNOHANG) != 0) {
+				fprintf(stderr, "server died. what happened?\n");
+				return 1;
+			}
+			usleep(1000);
+		}
+	}
+
+	setenv("DISPLAY", ":0", 1);
+
+	return 0;
+}
+
+static int wm_detected = 0;
+static int wm_detect(Display* disp, XErrorEvent* ev) {
+	(void)disp;
+	(void)ev;
+
+	wm_detected = 1;
+}
+
+static void* x11_thread_routine(void* arg) {
+	loop_x();
+	XCloseDisplay(xdisplay);
+}
+
+int init_x(void) {
+	XColor bg;
+	void*  old;
+
+	xdisplay = XOpenDisplay(NULL);
+
+	bg.red	 = 0x1c * 256;
+	bg.green = 0x45 * 256;
+	bg.blue	 = 0x73 * 256;
+	XAllocColor(xdisplay, DefaultColormap(xdisplay, DefaultScreen(xdisplay)), &bg);
+
+	XSetWindowBackground(xdisplay, DefaultRootWindow(xdisplay), bg.pixel);
+	XClearWindow(xdisplay, DefaultRootWindow(xdisplay));
+	XFlush(xdisplay);
+
+	old = XSetErrorHandler(wm_detect);
+	XSelectInput(xdisplay, DefaultRootWindow(xdisplay), SubstructureRedirectMask);
+	XSync(xdisplay, False);
+	XSetErrorHandler(old);
+
+	if(wm_detected) {
+		fprintf(stderr, "WM or something seem to be running\n");
+		return 1;
+	}
+
+	pthread_mutex_init(&xmutex, NULL);
+
+	pthread_create(&xthread, NULL, x11_thread_routine, NULL);
+
+	return 0;
+}
+
+int x_width(void) {
+	return DisplayWidth(xdisplay, DefaultScreen(xdisplay));
+}
+
+int x_height(void) {
+	return DisplayHeight(xdisplay, DefaultScreen(xdisplay));
+}
+
+typedef struct window {
+	MwWidget frame;
+	Window	 client;
+} window_t;
+
+void loop_x(void) {
+	XEvent	  ev;
+	window_t* frames = NULL;
+
+	while(1) {
+		XNextEvent(xdisplay, &ev);
+		if(ev.type == MapRequest) {
+			XWindowAttributes xwa;
+			window_t	  w;
+			int		  i;
+
+			pthread_mutex_lock(&xmutex);
+			for(i = 0; i < arrlen(frames); i++) {
+				if(frames[i].frame->lowlevel->x11.window == ev.xmaprequest.window) {
+					XReparentWindow(xdisplay, frames[i].client, frames[i].frame->lowlevel->x11.window, MwDefaultBorderWidth(root), MwDefaultBorderWidth(root));
+					XMapWindow(xdisplay, ev.xmaprequest.window);
+					XMapWindow(xdisplay, frames[i].client);
+					break;
+				}
+			}
+			if(i != arrlen(frames)) {
+				pthread_mutex_unlock(&xmutex);
+				continue;
+			}
+
+			XGetWindowAttributes(xdisplay, ev.xmaprequest.window, &xwa);
+
+			w.client = ev.xmaprequest.window;
+			w.frame	 = MwVaCreateWidget(MwWindowClass, "frame", root, xwa.x - MwDefaultBorderWidth(root), xwa.y - MwDefaultBorderWidth(root), xwa.width + MwDefaultBorderWidth(root) * 2, xwa.height + MwDefaultBorderWidth(root) * 2,
+						    MwNhasBorder, 1,
+						    MwNinverted, 0,
+						    NULL);
+
+			XSelectInput(xdisplay, w.client, StructureNotifyMask);
+
+			arrput(frames, w);
+			pthread_mutex_unlock(&xmutex);
+		} else if(ev.type == UnmapNotify) {
+			int i;
+			int c = 0;
+
+			pthread_mutex_lock(&xmutex);
+			for(i = 0; i < arrlen(frames); i++) {
+				if(frames[i].client == ev.xunmap.window) {
+					MwDestroyWidget(frames[i].frame);
+					arrdel(frames, i);
+					c = 1;
+					break;
+				}
+			}
+			pthread_mutex_unlock(&xmutex);
+
+			if(c) break;
+		}
+	}
+}
+
+void kill_x(void) {
+	kill(xserver, SIGINT);
+	waitpid(xserver, NULL, 0);
+}