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/*
* menu_dir.c -
* Demonstrate the use of an XView menu in a canvas subwindow.
* A menu is brought up with the MENU mouse button and displays
* menu choices representing the files in the directory. If a
* directory entry is found, a new pullright item is created with
* that subdir as the pullright menu's contents. This implementation
* creates the entire directory tree initially. Do not attempt to
* build a tree from /. You will most likely run out of resources.
*
* argv[1] indicates which directory to start from.
*/
#include <xview/xview.h>
#include <xview/canvas.h>
#include <sys/stat.h>
#include <dirent.h>
#if defined(__linux__) && defined(__GLIBC__)
/* martin.buck@bigfoot.com */
#include <dirent.h>
#else
#include <sys/dirent.h>
#endif
#include <X11/Xos.h>
#ifndef MAXPATHLEN
#include <sys/param.h> /* probably sun/BSD specific */
#endif /* MAXPATHLEN */
Frame frame;
/*
* main -
* Create a frame, canvas and menu.
* A canvas receives input in its canvas_paint_window().
* Its callback procedure calls menu_show().
*/
main(argc,argv)
int argc;
char *argv[];
{
Canvas canvas;
extern void exit();
void my_event_proc();
Menu menu;
Menu_item mi, add_path_to_menu();
xv_init(XV_INIT_ARGC_PTR_ARGV, &argc, argv, NULL);
frame = (Frame)xv_create(NULL, FRAME,
FRAME_LABEL, argv[1]? argv[1] : "cwd",
FRAME_SHOW_FOOTER, TRUE,
NULL);
canvas = (Canvas)xv_create(frame, CANVAS,
FRAME_LABEL, argv[0],
XV_WIDTH, 400,
XV_HEIGHT, 100,
NULL);
mi = add_path_to_menu(argc > 1? argv[1] : ".");
menu = (Menu)xv_get(mi, MENU_PULLRIGHT);
/* associate the menu to the canvas win for easy retrieval */
xv_set(canvas_paint_window(canvas),
WIN_CONSUME_EVENTS, WIN_MOUSE_BUTTONS, NULL,
WIN_EVENT_PROC, my_event_proc,
WIN_CLIENT_DATA, menu,
NULL);
window_fit(frame);
window_main_loop(frame);
}
/*
* my_action_proc - display the selected item in the frame footer.
*/
void
my_action_proc(menu, menu_item)
Menu menu;
Menu_item menu_item;
{
xv_set(frame,
FRAME_LEFT_FOOTER, xv_get(menu_item, MENU_STRING),
NULL);
}
/*
* Call menu_show() to display menu on right mouse button push.
*/
void
my_event_proc(canvas, event)
Canvas canvas;
Event *event;
{
if ((event_id(event) == MS_RIGHT) && event_is_down(event)) {
Menu menu = (Menu)xv_get(canvas, WIN_CLIENT_DATA);
menu_show(menu, canvas, event, NULL);
}
}
/*
* return an allocated char * that points to the last item in a path.
*/
char *
getfilename(path)
char *path;
{
char *p;
if (p = rindex(path, '/'))
p++;
else
p = path;
return strcpy(malloc(strlen(p)+1), p);
}
/*
* The path passed in is scanned via readdir(). For each file in the
* path, a menu item is created and inserted into a new menu. That
* new menu is made the PULLRIGHT_MENU of a newly created panel item
* for the path item originally passed it. Since this routine is
* recursive, a new menu is created for each subdirectory under the
* original path.
*/
Menu_item
add_path_to_menu(path)
char *path;
{
DIR *dirp;
struct dirent *dp;
struct stat s_buf;
Menu_item mi;
Menu next_menu;
char buf[MAXPATHLEN];
/* don't add a folder to the list if user can't read it */
if (stat(path, &s_buf) == -1 || !(s_buf.st_mode & S_IREAD))
return NULL;
if (s_buf.st_mode & S_IFDIR) {
int cnt = 0;
if (!(dirp = opendir(path)))
/* don't bother adding to list if we can't scan it */
return NULL;
next_menu = (Menu)xv_create(XV_NULL, MENU, NULL);
while (dp = readdir(dirp))
if (strcmp(dp->d_name, ".") && strcmp(dp->d_name, "..")) {
(void) sprintf(buf, "%s/%s", path, dp->d_name);
if (!(mi = add_path_to_menu(buf)))
/* unreadable file or dir - deactivate item */
mi = xv_create(XV_NULL, MENUITEM,
MENU_STRING, getfilename(dp->d_name),
MENU_RELEASE,
MENU_RELEASE_IMAGE,
MENU_INACTIVE, TRUE,
NULL);
xv_set(next_menu, MENU_APPEND_ITEM, mi, NULL);
cnt++;
}
closedir(dirp);
mi = xv_create(XV_NULL, MENUITEM,
MENU_STRING, getfilename(path),
MENU_RELEASE,
MENU_RELEASE_IMAGE,
MENU_NOTIFY_PROC, my_action_proc,
NULL);
if (!cnt) {
xv_destroy(next_menu);
/* An empty or unsearchable directory - deactivate item */
xv_set(mi, MENU_INACTIVE, TRUE, NULL);
} else {
xv_set(next_menu, MENU_TITLE_ITEM, getfilename(path), NULL);
xv_set(mi, MENU_PULLRIGHT, next_menu, NULL);
}
return mi;
}
return (Menu_item)xv_create(NULL, MENUITEM,
MENU_STRING, getfilename(path),
MENU_RELEASE,
MENU_RELEASE_IMAGE,
MENU_NOTIFY_PROC, my_action_proc,
NULL);
}
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