tnew tool: pfw - wmutils - X windows manipulation utilities
(HTM) git clone git://z3bra.org/wmutils
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---
(DIR) commit a7b76073340d7a8641916bc3a36e8df2cb27320c
(DIR) parent cc0672a62f42b17e8ef050c87bb43c00cb703696
(HTM) Author: z3bra <willy@mailoo.org>
Date: Thu, 27 Nov 2014 23:02:41 +0100
new tool: pfw
Diffstat:
A Makefile | 45 +++++++++++++++++++++++++++++++
A arg.h | 63 +++++++++++++++++++++++++++++++
A pfw.c | 54 +++++++++++++++++++++++++++++++
3 files changed, 162 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/Makefile b/Makefile
t@@ -0,0 +1,45 @@
+PREFIX:=/usr
+MANPREFIX:=$(PREFIX)/share/man
+
+CC = cc
+LD = $(CC)
+CFLAGS += -std=c99 -pedantic -Wall -Os
+LDFLAGS += -lxcb
+
+HDR = arg.h
+SRC = \
+ pfw.c \
+ lsw.c \
+ mapw.c \
+ killw.c \
+ wattr.c
+
+OBJ = $(SRC:.c=.o)
+BIN = $(SRC:.c=)
+
+.POSIX:
+
+all: $(BIN)
+
+$(OBJ): $(HDR)
+
+.o:
+ @echo "LD $@"
+ @$(LD) $< -o $@ $(LDFLAGS)
+
+.c.o:
+ @echo "CC $<"
+ @$(CC) -c $< -o $@ $(LDFLAGS)
+
+install: $(BIN)
+ mkdir -p $(DESTDIR)$(PREFIX)/bin/
+ cp -f $(BIN) $(DESTDIR)$(PREFIX)/bin/
+
+uninstall:
+ @echo "uninstalling $(BIN)"
+ for util in $(BIN); do \
+ rm -f $(DESTDIR)$(PREFIX)/bin/$$util; \
+ done
+
+clean :
+ rm -f $(OBJ) $(BIN)
(DIR) diff --git a/arg.h b/arg.h
t@@ -0,0 +1,63 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef ARG_H__
+#define ARG_H__
+
+extern char *argv0;
+
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
+ argv[0] && argv[0][1]\
+ && argv[0][0] == '-';\
+ argc--, argv++) {\
+ char argc_;\
+ char **argv_;\
+ int brk_;\
+ if (argv[0][1] == '-' && argv[0][2] == '\0') {\
+ argv++;\
+ argc--;\
+ break;\
+ }\
+ for (brk_ = 0, argv[0]++, argv_ = argv;\
+ argv[0][0] && !brk_;\
+ argv[0]++) {\
+ if (argv_ != argv)\
+ break;\
+ argc_ = argv[0][0];\
+ switch (argc_)
+
+/* Handles obsolete -NUM syntax */
+#define ARGNUM case '0':\
+ case '1':\
+ case '2':\
+ case '3':\
+ case '4':\
+ case '5':\
+ case '6':\
+ case '7':\
+ case '8':\
+ case '9'
+
+#define ARGEND }\
+ }
+
+#define ARGC() argc_
+
+#define ARGNUMF(base) (brk_ = 1, estrtol(argv[0], (base)))
+
+#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
+ ((x), abort(), (char *)0) :\
+ (brk_ = 1, (argv[0][1] != '\0')?\
+ (&argv[0][1]) :\
+ (argc--, argv++, argv[0])))
+
+#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
+ (char *)0 :\
+ (brk_ = 1, (argv[0][1] != '\0')?\
+ (&argv[0][1]) :\
+ (argc--, argv++, argv[0])))
+
+#endif
(DIR) diff --git a/pfw.c b/pfw.c
t@@ -0,0 +1,54 @@
+/* See LICENSE file for copyright and license details. */
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <xcb/xcb.h>
+
+static xcb_connection_t *conn;
+
+static void xcbinit(void);
+static void cleanup(void);
+static xcb_window_t focuswindow(void);
+
+static void
+xcbinit(void)
+{
+ conn = xcb_connect(NULL, NULL);
+ if (xcb_connection_has_error(conn))
+ errx(1, "xcb_connect");
+}
+
+static void
+cleanup(void)
+{
+ if (conn != NULL)
+ xcb_disconnect(conn);
+}
+
+static xcb_window_t
+focuswindow(void)
+{
+ xcb_window_t w = 0;
+ xcb_get_input_focus_cookie_t c;
+ xcb_get_input_focus_reply_t *r;
+
+ c = xcb_get_input_focus(conn);
+ r = xcb_get_input_focus_reply(conn, c, NULL);
+ if (r == NULL)
+ errx(1, "xcb_get_input_focus");
+
+ w = r->focus;
+ free(r);
+ return w;
+}
+
+int
+main(int argc, char **argv)
+{
+ atexit(cleanup);
+ xcbinit();
+
+ printf("0x%08x\n", focuswindow());
+ return 0;
+}