added gridsel to gridwm

[dwm.git] / util.c

diff --git a/util.c b/util.c
index c0f2489..052d535 100644 (file)
--- a/util.c
+++ b/util.c
@@ -10,6 +10,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
+#include <X11/Xatom.h>
 
 #include "util.h"
 
@@ -147,3 +148,40 @@ pipe_spawn(char *buf, unsigned int len, Display *dpy, const char *cmd)
        }
        wait(0);
 }
+
+
+unsigned char *
+getselection(unsigned long offset, unsigned long *len, unsigned long *remain)
+{
+       Display *dpy;
+       Atom xa_clip_string;
+       Window w;
+       XEvent ev;
+       Atom typeret;
+       int format;
+       unsigned char *data;
+       unsigned char *result = NULL;
+
+       dpy = XOpenDisplay(0);
+       if(!dpy)
+               return NULL;
+       xa_clip_string = XInternAtom(dpy, "_SEL_STRING", False);
+       w = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10, 200, 200,
+                       1, CopyFromParent, CopyFromParent);
+       XConvertSelection(dpy, XA_PRIMARY, XA_STRING, xa_clip_string,
+                       w, CurrentTime);
+       XFlush(dpy);
+       XNextEvent(dpy, &ev);
+       if(ev.type == SelectionNotify && ev.xselection.property != None) {
+               XGetWindowProperty(dpy, w, ev.xselection.property, offset, 4096L, False,
+                               AnyPropertyType, &typeret, &format, len, remain, &data);
+               if(*len) {
+                       result = emalloc(sizeof(unsigned char) * *len);
+                       memcpy(result, data, *len);
+               }
+               XDeleteProperty(dpy, w, ev.xselection.property);
+       }
+       XDestroyWindow(dpy, w);
+       XCloseDisplay(dpy);
+       return result;
+}