Implement support for terminal resizing

diff --git a/tig.c b/tig.c
index 910c6fcb46c4cb762a378f26ce05df5de3bd0fb2..5ca8a02b9f3386a23d46496ac3c3c776837da544 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -90,6 +90,7 @@ enum request {
        REQ_QUIT,
        REQ_PROMPT,
        REQ_SCREEN_REDRAW,
+       REQ_SCREEN_RESIZE,
        REQ_SCREEN_UPDATE,
        REQ_SHOW_VERSION,
        REQ_STOP_LOADING,
@@ -457,6 +458,8 @@ struct keymap keymap[] = {
 
        /* wgetch() with nodelay() enabled returns ERR when there's no input. */
        { ERR,          REQ_SCREEN_UPDATE },
+       /* Use the ncurses SIGWINCH handler. */
+       { KEY_RESIZE,   REQ_SCREEN_RESIZE },
 };
 
 static enum request
@@ -1307,6 +1310,9 @@ view_driver(struct view *view, enum request request)
                report("Version: %s", VERSION);
                return TRUE;
 
+       case REQ_SCREEN_RESIZE:
+               resize_display();
+               /* Fall-through */
        case REQ_SCREEN_REDRAW:
                foreach_view (view, i) {
                        redraw_view(view);
@@ -1418,14 +1424,6 @@ pager_draw(struct view *view, unsigned int lineno)
 static bool
 pager_read(struct view *view, char *line)
 {
-       /* For some reason the piped man page has many empty lines
-        * so skip successive emptys lines to work around it. */
-       if (view == VIEW(REQ_VIEW_HELP) &&
-           !*line &&
-           view->lines &&
-           !*((char *) view->line[view->lines - 1]))
-               return TRUE;
-
        view->line[view->lines] = strdup(line);
        if (!view->line[view->lines])
                return FALSE;
@@ -1712,6 +1710,8 @@ static void die(const char *err, ...)
        exit(1);
 }
 
+#include <readline/readline.h>
+
 int
 main(int argc, char *argv[])
 {
@@ -1742,7 +1742,10 @@ main(int argc, char *argv[])
                key = wgetch(status_win);
                request = get_request(key);
 
-               if (request == REQ_PROMPT) {
+               /* Some low-level request handling. This keeps handling of
+                * status_win restricted. */
+               switch (request) {
+               case REQ_PROMPT:
                        report(":");
                        /* Temporarily switch to line-oriented and echoed
                         * input. */
@@ -1758,6 +1761,23 @@ main(int argc, char *argv[])
 
                        noecho();
                        cbreak();
+                       break;
+
+               case REQ_SCREEN_RESIZE:
+               {
+                       int height, width;
+
+                       getmaxyx(stdscr, height, width);
+
+                       /* Resize the status view and let the view driver take
+                        * care of resizing the displayed views. */
+                       wresize(status_win, 1, width);
+                       mvwin(status_win, height - 1, 0);
+                       wrefresh(status_win);
+                       break;
+               }
+               default:
+                       break;
                }
        }
 
@@ -1771,8 +1791,7 @@ main(int argc, char *argv[])
  * ----
  * Features that should be explored.
  *
- * - Terminal resizing support. I am yet to figure out whether catching
- *   SIGWINCH is preferred over using ncurses' built-in support for resizing.
+ * - Searching.
  *
  * - Locale support.
  *