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Enable window selection based on WM_CLASS hints #15

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Enable window selection based on WM_CLASS hints #15

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6 changes: 4 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,10 @@ Usage
=====
usage: xseticon [options] path/to/icon.png
options:
-name : apply icon to the window of the name supplied
-id : apply icon to the window id supplied
-name : apply icon to the window of the name supplied
-id : apply icon to the window id supplied
-class : apply icon to the window matching the class supplied


Sets the window icon to the specified .png image. The image is loaded from
the file at runtime and sent to the X server; thereafter the file does not
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35 changes: 35 additions & 0 deletions xseticon.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ void usage(int exitcode)
printf("options:\n");
printf(" -name <text> : apply icon to the window of the name supplied\n");
printf(" -id <windowid> : apply icon to the window id supplied\n");
printf(" -class <text> : apply icon to the window matching the class supplied\n");
printf("\n");
printf("Sets the window icon to the specified .png image. The image is loaded from\n");
printf("the file at runtime and sent to the X server; thereafter the file does not\n");
Expand Down Expand Up @@ -99,6 +100,30 @@ Window Window_With_Name(Display* dpy, Window top, char* name)
return(w);
}

Window Window_With_Class(Display* dpy, Window top, char* class)
{
Window *children, dummy;
unsigned int nchildren;
int i;
Window w = 0;
XClassHint *hint = XAllocClassHint();

if (XGetClassHint(dpy, top, hint)
&& (!strcmp(hint->res_class, class) || !strcmp(hint->res_name, class)))
return(top);

if (!XQueryTree(dpy, top, &dummy, &dummy, &children, &nchildren))
return(0);

for (i=0; i<nchildren; i++) {
w = Window_With_Class(dpy, children[i], class);
if (w)
break;
}
if (children) XFree ((char *)children);
return(w);
}

Window Select_Window_Args(Display* dpy, int screen, int* rargc, char* argv[])
{
int nargc = 1;
Expand Down Expand Up @@ -130,6 +155,16 @@ Window Select_Window_Args(Display* dpy, int screen, int* rargc, char* argv[])
Fatal_Error("No window with name %s exists!",OPTION);
continue;
}
if (!strcmp(OPTION, "-class")) {
NXTOPT;
if (verbose)
printf("Selecting window by class %s\n", OPTION);
w = Window_With_Class(dpy, RootWindow(dpy, screen),
OPTION);
if (!w)
Fatal_Error("No window with class %s exists!",OPTION);
continue;
}
if (!strcmp(OPTION, "-id")) {
NXTOPT;
if (verbose)
Expand Down