add -w option to embed st. (thx nodus cursorius)

2 files changed, 14 insertions, 2 deletions

diff --git a/st.1 b/st.1
index 69cfe86..b6c119f 100644
--- a/st.1
+++ b/st.1
@@ -7,6 +7,8 @@ st \- simple terminal
 .IR class ]
 .RB [ \-t 
 .IR title ]
+.RB [ \-w 
+.IR windowid ]
 .RB [ \-v ]
 .RB [ \-e
 .IR command ...]
@@ -21,6 +23,10 @@ defines the window title (default 'st').
 .BI \-c " class"
 defines the window class (default $TERM).
 .TP
+.BI \-w " windowid"
+embeds st within the window identified by 
+.I windowid
+.TP
 .B \-v
 prints version information to stderr, then exits.
 .TP
diff --git a/st.c b/st.c
index 6ba5c4c..b331ead 100644
--- a/st.c
+++ b/st.c
@@ -35,7 +35,7 @@
 
 #define USAGE \
         "st-" VERSION ", (c) 2010-2011 st engineers\n" \
-        "usage: st [-t title] [-c class] [-v] [-e command...]\n"
+        "usage: st [-t title] [-c class] [-w windowid] [-v] [-e command...]\n"
 
 /* Arbitrary sizes */
 #define ESC_TITLE_SIZ 256
@@ -260,6 +260,7 @@ static pid_t pid;
 static Selection sel;
 static char **opt_cmd  = NULL;
 static char *opt_title = NULL;
+static char *opt_embed = NULL;
 static char *opt_class = NULL;
 
 int
@@ -1606,6 +1607,7 @@ void
 xinit(void) {
         XSetWindowAttributes attrs;
         Cursor cursor;
+        Window parent;
 
         if(!(xw.dpy = XOpenDisplay(NULL)))
                 die("Can't open display\n");
@@ -1636,7 +1638,8 @@ xinit(void) {
                 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
         attrs.colormap = xw.cmap;
 
-        xw.win = XCreateWindow(xw.dpy, XRootWindow(xw.dpy, xw.scr), 0, 0,
+        parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
+        xw.win = XCreateWindow(xw.dpy, parent, 0, 0,
                         xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
                         XDefaultVisual(xw.dpy, xw.scr),
                         CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
@@ -1943,6 +1946,9 @@ main(int argc, char *argv[]) {
                 case 'c':
                         if(++i < argc) opt_class = argv[i];
                         break;
+                case 'w':
+                        if(++i < argc) opt_embed = argv[i];
+                        break;
                 case 'e': 
                         /* eat every remaining arguments */
                         if(++i < argc) opt_cmd = &argv[i];