initial checkin

1 files changed, 229 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..5038d93
--- /dev/null
+++ b/main.c
@@ -0,0 +1,229 @@
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xatom.h>
+#include <X11/Xproto.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include "ratpoison.h"
+
+static void init_screen (screen_info *s, int screen_num);
+
+Atom wm_state;
+Atom wm_change_state;
+Atom wm_protocols;
+Atom wm_delete;
+Atom wm_take_focus;
+Atom wm_colormaps;
+
+Atom rp_restart;
+
+screen_info *screens;
+int num_screens;
+Display *dpy;
+int exit_signal = 0;		/* Set by the signal handler. if this
+                                   is set, quit. */
+static XFontStruct *font;
+
+char **myargv;
+
+void
+sighandler ()
+{
+  fprintf (stderr, "ratpoison: Agg! I've been SHOT!\n"); 
+  clean_up ();
+  exit (EXIT_FAILURE);
+}
+
+void
+hup_handler ()
+{
+  /* This doesn't seem to restart more than once for some reason...*/
+
+  fprintf (stderr, "ratpoison: Restarting with a fresh plate.\n"); 
+  clean_up ();
+  execvp(myargv[0], myargv);
+}
+
+void
+alrm_handler ()
+{
+  int i;
+
+#ifdef DEBUG
+  printf ("alarm recieved.\n");
+#endif
+
+  /* FIXME: should only hide 1 bar, but we hide them all. */
+  for (i=0; i<num_screens; i++)
+    {
+      hide_bar (&screens[i]);
+    }
+  XSync (dpy, False);
+}
+
+int
+handler (Display *d, XErrorEvent *e)
+{
+  if (e->request_code == X_ChangeWindowAttributes && e->error_code == BadAccess) {
+    fprintf(stderr, "ratpoison: There can be only ONE.\n");
+    exit(EXIT_FAILURE);
+  }  
+
+  fprintf (stderr, "ratpoison: Ya some error happened, but whatever.\n");
+  return 0;
+}
+
+int
+main (int argc, char *argv[])
+{
+  int i;
+
+  myargv = argv;
+
+  if (!(dpy = XOpenDisplay (NULL)))
+    {
+      fprintf (stderr, "Can't open display\n");
+      return EXIT_FAILURE;
+    }
+
+  init_window_list ();
+
+  font = XLoadQueryFont (dpy, FONT_NAME);
+  if (font == NULL)
+    {
+      fprintf (stderr, "ratpoison: Cannot load font %s.\n", FONT_NAME);
+      exit (EXIT_FAILURE);
+    }
+
+  num_screens = ScreenCount (dpy);
+  if ((screens = (screen_info *)malloc (sizeof (screen_info) * num_screens)) == NULL)
+    {
+      fprintf (stderr, "ratpoison:main.c:Out of memory!\n");
+      exit (EXIT_FAILURE);
+    }  
+
+  printf ("%d screens.\n", num_screens);
+
+  /* Initialize the screens */
+  for (i=0; i<num_screens; i++)
+    {
+      init_screen (&screens[i], i);
+    }
+
+  /* Setup signal handlers. */
+  //  XSetErrorHandler(handler);  
+  if (signal (SIGALRM, alrm_handler) == SIG_IGN) signal (SIGALRM, SIG_IGN);
+  if (signal (SIGTERM, sighandler) == SIG_IGN) signal (SIGTERM, SIG_IGN);
+  if (signal (SIGINT, sighandler) == SIG_IGN) signal (SIGINT, SIG_IGN);
+  if (signal (SIGHUP, hup_handler) == SIG_IGN) signal (SIGHUP, SIG_IGN);
+
+  /* Set our Atoms */
+  wm_state = XInternAtom(dpy, "WM_STATE", False);
+  wm_change_state = XInternAtom(dpy, "WM_CHANGE_STATE", False);
+  wm_protocols = XInternAtom(dpy, "WM_PROTOCOLS", False);
+  wm_delete = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
+  wm_take_focus = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
+  wm_colormaps = XInternAtom(dpy, "WM_COLORMAP_WINDOWS", False);
+
+  rp_restart = XInternAtom (dpy, "RP_RESTART", False);
+
+  XSync (dpy, False);
+
+  /* Set an initial window as active. */
+  rp_current_window = rp_window_head;
+  set_active_window (rp_current_window);
+  
+  handle_events ();
+
+  return EXIT_SUCCESS;
+}
+
+static void
+init_screen (screen_info *s, int screen_num)
+{
+  XColor fg_color, bg_color, bold_color, junk;
+  XGCValues gv;
+
+  s->screen_num = screen_num;
+  s->root = RootWindow (dpy, screen_num);
+  s->def_cmap = DefaultColormap (dpy, screen_num);
+  s->font = font;
+  XGetWindowAttributes (dpy, s->root, &s->root_attr);
+
+  /* Get our program bar colors */
+  if (!XAllocNamedColor (dpy, s->def_cmap, BAR_FG_COLOR, &fg_color, &junk))
+    {
+      fprintf (stderr, "Unknown color '%s'\n", BAR_FG_COLOR);
+    }
+
+  if (!XAllocNamedColor (dpy, s->def_cmap, BAR_BG_COLOR, &bg_color, &junk))
+    {
+      fprintf (stderr, "Unknown color '%s'\n", BAR_BG_COLOR);
+    }
+
+  if (!XAllocNamedColor (dpy, s->def_cmap, BAR_BOLD_COLOR, &bold_color, &junk))
+    {
+      fprintf (stderr, "Unknown color '%s'\n", BAR_BOLD_COLOR);
+    }
+
+  /* Setup the GC for drawing the font. */
+  gv.foreground = fg_color.pixel;
+  gv.background = bg_color.pixel;
+  gv.function = GXcopy;
+  gv.line_width = 1;
+  gv.subwindow_mode = IncludeInferiors;
+  gv.font = font->fid;
+  s->normal_gc = XCreateGC(dpy, s->root, 
+			   GCForeground | GCBackground | GCFunction 
+			   | GCLineWidth | GCSubwindowMode | GCFont, 
+			   &gv);
+  gv.foreground = bold_color.pixel;
+  s->bold_gc = XCreateGC(dpy, s->root, 
+			 GCForeground | GCBackground | GCFunction 
+			 | GCLineWidth | GCSubwindowMode | GCFont, 
+			 &gv);
+
+  XSelectInput(dpy, s->root,
+               PropertyChangeMask | ColormapChangeMask
+               | SubstructureRedirectMask | KeyPressMask 
+               | SubstructureNotifyMask );
+  XSync (dpy, 0);
+
+  /* Create the program bar window. */
+  s->bar_is_raised = 0;
+  s->bar_window = XCreateSimpleWindow (dpy, s->root, 0, 0,
+				       1, 1, 1, fg_color.pixel, bg_color.pixel);
+
+  /* Setup the window that will recieve all keystrokes once the prefix
+     key has been pressed. */
+  s->key_window = XCreateSimpleWindow (dpy, s->root, 0, 0, 1, 1, 0, WhitePixel (dpy, 0), BlackPixel (dpy, 0));
+  XSelectInput (dpy, s->bar_window, StructureNotifyMask);
+  XMapWindow (dpy, s->key_window);
+  grab_keys (s);
+
+  scanwins (s);
+}
+
+void
+clean_up ()
+{
+  XSetInputFocus (dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+  XCloseDisplay (dpy);
+}
+
+/* Given a root window, return the screen_info struct */
+screen_info *
+find_screen (Window w)
+{
+  int i;
+
+  for (i=0; i<num_screens; i++)
+    if (screens[i].root == w) return &screens[i];
+
+  return NULL;
+}