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authormarha <marha@users.sourceforge.net>2009-11-06 16:24:47 +0000
committermarha <marha@users.sourceforge.net>2009-11-06 16:24:47 +0000
commit21ce31868b5716bb6824fa47ed151fad8d8b5502 (patch)
tree3fb0add2af39f4504775b63dfbca9c8c0d55703f /apps/xwininfo/dsimple.c
parentaadbba08d10065b0104b83084245f41a3e704c41 (diff)
parent0032f9b66d63a4b1c5222edb8603fb60da379fb0 (diff)
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Added xwininfo
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+/* $Xorg: dsimple.c,v 1.4 2001/02/09 02:05:54 xorgcvs Exp $ */
+/*
+
+Copyright 1993, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+/* $XFree86: xc/programs/xlsfonts/dsimple.c,v 3.6 2001/12/14 20:02:09 dawes Exp $ */
+
+#include <X11/Xos.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/cursorfont.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+/*
+ * Other_stuff.h: Definitions of routines in other_stuff.
+ *
+ * Written by Mark Lillibridge. Last updated 7/1/87
+ */
+
+#include "clientwin.h"
+#include "dsimple.h"
+
+/*
+ * Just_display: A group of routines designed to make the writing of simple
+ * X11 applications which open a display but do not open
+ * any windows much faster and easier. Unless a routine says
+ * otherwise, it may be assumed to require program_name, dpy,
+ * and screen already defined on entry.
+ *
+ * Written by Mark Lillibridge. Last updated 7/1/87
+ */
+
+
+/* This stuff is defined in the calling program by just_display.h */
+char *program_name = "unknown_program";
+Display *dpy = NULL;
+int screen = 0;
+
+
+/*
+ * Get_Display_Name (argc, argv) Look for -display, -d, or host:dpy (obselete)
+ * If found, remove it from command line. Don't go past a lone -.
+ */
+char *Get_Display_Name(
+ int *pargc, /* MODIFIED */
+ char **argv) /* MODIFIED */
+{
+ int argc = *pargc;
+ char **pargv = argv+1;
+ char *displayname = NULL;
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ char *arg = argv[i];
+
+ if (!strcmp (arg, "-display") || !strcmp (arg, "-d")) {
+ if (++i >= argc) usage ();
+
+ displayname = argv[i];
+ *pargc -= 2;
+ continue;
+ }
+ if (!strcmp(arg,"-")) {
+ while (i<argc)
+ *pargv++ = argv[i++];
+ break;
+ }
+ *pargv++ = arg;
+ }
+
+ *pargv = NULL;
+ return (displayname);
+}
+
+
+
+/*
+ * Open_Display: Routine to open a display with correct error handling.
+ * Does not require dpy or screen defined on entry.
+ */
+Display *Open_Display(char *display_name)
+{
+ Display *d;
+
+ d = XOpenDisplay(display_name);
+ if (d == NULL) {
+ fprintf (stderr, "%s: unable to open display '%s'\n",
+ program_name, XDisplayName (display_name));
+ exit(1);
+ }
+
+ return(d);
+}
+
+
+/*
+ * Setup_Display_And_Screen: This routine opens up the correct display (i.e.,
+ * it calls Get_Display_Name) and then stores a
+ * pointer to it in dpy. The default screen
+ * for this display is then stored in screen.
+ * Does not require dpy or screen defined.
+ */
+void Setup_Display_And_Screen(
+ int *argc, /* MODIFIED */
+ char **argv) /* MODIFIED */
+{
+ char *displayname = NULL;
+
+ displayname = Get_Display_Name(argc, argv);
+ dpy = Open_Display (displayname);
+ screen = XDefaultScreen(dpy);
+}
+
+/*
+ * Close_Display: Close display
+ */
+void Close_Display(void)
+{
+ if (dpy == NULL)
+ return;
+
+ XCloseDisplay(dpy);
+ dpy = NULL;
+}
+
+
+/*
+ * Select_Window_Args: a rountine to provide a common interface for
+ * applications that need to allow the user to select one
+ * window on the screen for special consideration.
+ * This routine implements the following command line
+ * arguments:
+ *
+ * -root Selects the root window.
+ * -id <id> Selects window with id <id>. <id> may
+ * be either in decimal or hex.
+ * -name <name> Selects the window with name <name>.
+ *
+ * Call as Select_Window_Args(&argc, argv) in main before
+ * parsing any of your program's command line arguments.
+ * Select_Window_Args will remove its arguments so that
+ * your program does not have to worry about them.
+ * The window returned is the window selected or 0 if
+ * none of the above arguments was present. If 0 is
+ * returned, Select_Window should probably be called after
+ * all command line arguments, and other setup is done.
+ * For examples of usage, see xwininfo, xwd, or xprop.
+ */
+Window Select_Window_Args(
+ int *rargc,
+ char **argv)
+#define ARGC (*rargc)
+{
+ int nargc=1;
+ int argc;
+ char **nargv;
+ Window w=0;
+
+ nargv = argv+1; argc = ARGC;
+#define OPTION argv[0]
+#define NXTOPTP ++argv, --argc>0
+#define NXTOPT if (++argv, --argc==0) usage()
+#define COPYOPT nargv++[0]=OPTION, nargc++
+
+ while (NXTOPTP) {
+ if (!strcmp(OPTION, "-")) {
+ COPYOPT;
+ while (NXTOPTP)
+ COPYOPT;
+ break;
+ }
+ if (!strcmp(OPTION, "-root")) {
+ w=RootWindow(dpy, screen);
+ continue;
+ }
+ if (!strcmp(OPTION, "-name")) {
+ NXTOPT;
+ w = Window_With_Name(dpy, RootWindow(dpy, screen),
+ OPTION);
+ if (!w)
+ Fatal_Error("No window with name %s exists!",OPTION);
+ continue;
+ }
+ if (!strcmp(OPTION, "-id")) {
+ NXTOPT;
+ w=0;
+ sscanf(OPTION, "0x%lx", &w);
+ if (!w)
+ sscanf(OPTION, "%lu", &w);
+ if (!w)
+ Fatal_Error("Invalid window id format: %s.", OPTION);
+ continue;
+ }
+ COPYOPT;
+ }
+ ARGC = nargc;
+
+ return(w);
+}
+
+/*
+ * Other_stuff: A group of routines which do common X11 tasks.
+ *
+ * Written by Mark Lillibridge. Last updated 7/1/87
+ */
+
+
+/*
+ * Routine to let user select a window using the mouse
+ */
+
+Window Select_Window(Display *dpy, int descend)
+{
+ int status;
+ Cursor cursor;
+ XEvent event;
+ Window target_win = None, root = RootWindow(dpy,screen);
+ int buttons = 0;
+
+ /* Make the target cursor */
+ cursor = XCreateFontCursor(dpy, XC_crosshair);
+
+ /* Grab the pointer using target cursor, letting it room all over */
+ status = XGrabPointer(dpy, root, False,
+ ButtonPressMask|ButtonReleaseMask, GrabModeSync,
+ GrabModeAsync, root, cursor, CurrentTime);
+ if (status != GrabSuccess) Fatal_Error("Can't grab the mouse.");
+
+ /* Let the user select a window... */
+ while ((target_win == None) || (buttons != 0)) {
+ /* allow one more event */
+ XAllowEvents(dpy, SyncPointer, CurrentTime);
+ XWindowEvent(dpy, root, ButtonPressMask|ButtonReleaseMask, &event);
+ switch (event.type) {
+ case ButtonPress:
+ if (target_win == None) {
+ target_win = event.xbutton.subwindow; /* window selected */
+ if (target_win == None) target_win = root;
+ }
+ buttons++;
+ break;
+ case ButtonRelease:
+ if (buttons > 0) /* there may have been some down before we started */
+ buttons--;
+ break;
+ }
+ }
+
+ XUngrabPointer(dpy, CurrentTime); /* Done with pointer */
+
+ if (!descend || (target_win == root))
+ return(target_win);
+
+ target_win = Find_Client(dpy, root, target_win);
+
+ return(target_win);
+}
+
+
+/*
+ * Window_With_Name: routine to locate a window with a given name on a display.
+ * If no window with the given name is found, 0 is returned.
+ * If more than one window has the given name, the first
+ * one found will be returned. Only top and its subwindows
+ * are looked at. Normally, top should be the RootWindow.
+ */
+Window Window_With_Name(
+ Display *dpy,
+ Window top,
+ char *name)
+{
+ Window *children, dummy;
+ unsigned int nchildren;
+ int i;
+ Window w=0;
+ char *window_name;
+
+ if (XFetchName(dpy, top, &window_name) && !strcmp(window_name, name))
+ return(top);
+
+ if (!XQueryTree(dpy, top, &dummy, &dummy, &children, &nchildren))
+ return(0);
+
+ for (i=0; i<nchildren; i++) {
+ w = Window_With_Name(dpy, children[i], name);
+ if (w)
+ break;
+ }
+ if (children) XFree ((char *)children);
+ return(w);
+}
+
+
+/*
+ * Standard fatal error routine - call like printf
+ * Does not require dpy or screen defined.
+ */
+void Fatal_Error(char *msg, ...)
+{
+ va_list args;
+ fflush(stdout);
+ fflush(stderr);
+ fprintf(stderr, "%s: error: ", program_name);
+ va_start(args, msg);
+ vfprintf(stderr, msg, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ Close_Display();
+ exit(EXIT_FAILURE);
+}