mconf: use function calls instead of ncurses' variables LINES and COLS

According to the documentation [1], LINES and COLS are initialized by
initscr(); it does not say anything about the behavior when windows are
resized.

Do not rely on the current implementation of ncurses that updates
these variables on resize, but use the propper function calls to get
window dimensions.

init_dialog() could make use of the variables, but for the sake of
consistency we do not change it's current use of the macro getmaxyx().

[1] ncurses(3X)

Signed-off-by: Dirk Gouders <dirk@gouders.net>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

6 files changed, 19 insertions, 14 deletions

diff --git a/scripts/kconfig/lxdialog/checklist.c b/scripts/kconfig/lxdialog/checklist.c
index 30340571190e..3b15c08ec1fa 100644
--- a/scripts/kconfig/lxdialog/checklist.c
+++ b/scripts/kconfig/lxdialog/checklist.c
@@ -140,8 +140,8 @@ do_resize:
         max_choice = MIN(list_height, item_count());
 
         /* center dialog box on screen */
-        x = (COLS - width) / 2;
-        y = (LINES - height) / 2;
+        x = (getmaxx(stdscr) - width) / 2;
+        y = (getmaxy(stdscr) - height) / 2;
 
         draw_shadow(stdscr, y, x, height, width);
 
diff --git a/scripts/kconfig/lxdialog/inputbox.c b/scripts/kconfig/lxdialog/inputbox.c
index 7b01add415a8..447a582198c9 100644
--- a/scripts/kconfig/lxdialog/inputbox.c
+++ b/scripts/kconfig/lxdialog/inputbox.c
@@ -62,8 +62,8 @@ do_resize:
                 return -ERRDISPLAYTOOSMALL;
 
         /* center dialog box on screen */
-        x = (COLS - width) / 2;
-        y = (LINES - height) / 2;
+        x = (getmaxx(stdscr) - width) / 2;
+        y = (getmaxy(stdscr) - height) / 2;
 
         draw_shadow(stdscr, y, x, height, width);
 
diff --git a/scripts/kconfig/lxdialog/menubox.c b/scripts/kconfig/lxdialog/menubox.c
index 00d28410adc9..92b89a6cb35a 100644
--- a/scripts/kconfig/lxdialog/menubox.c
+++ b/scripts/kconfig/lxdialog/menubox.c
@@ -203,8 +203,8 @@ do_resize:
         max_choice = MIN(menu_height, item_count());
 
         /* center dialog box on screen */
-        x = (COLS - width) / 2;
-        y = (LINES - height) / 2;
+        x = (getmaxx(stdscr) - width) / 2;
+        y = (getmaxy(stdscr) - height) / 2;
 
         draw_shadow(stdscr, y, x, height, width);
 
diff --git a/scripts/kconfig/lxdialog/textbox.c b/scripts/kconfig/lxdialog/textbox.c
index 907cdcb397c1..1773319b95e7 100644
--- a/scripts/kconfig/lxdialog/textbox.c
+++ b/scripts/kconfig/lxdialog/textbox.c
@@ -98,8 +98,8 @@ do_resize:
                         width = 0;
 
         /* center dialog box on screen */
-        x = (COLS - width) / 2;
-        y = (LINES - height) / 2;
+        x = (getmaxx(stdscr) - width) / 2;
+        y = (getmaxy(stdscr) - height) / 2;
 
         draw_shadow(stdscr, y, x, height, width);
 
diff --git a/scripts/kconfig/lxdialog/util.c b/scripts/kconfig/lxdialog/util.c
index 0fa567eb68c6..58a8289dd650 100644
--- a/scripts/kconfig/lxdialog/util.c
+++ b/scripts/kconfig/lxdialog/util.c
@@ -254,7 +254,12 @@ void attr_clear(WINDOW * win, int height, int width, chtype attr)
 
 void dialog_clear(void)
 {
-        attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
+        int lines, columns;
+
+        lines = getmaxy(stdscr);
+        columns = getmaxx(stdscr);
+
+        attr_clear(stdscr, lines, columns, dlg.screen.atr);
         /* Display background title if it exists ... - SLH */
         if (dlg.backtitle != NULL) {
                 int i, len = 0, skip = 0;
@@ -269,10 +274,10 @@ void dialog_clear(void)
                 }
 
                 wmove(stdscr, 1, 1);
-                if (len > COLS - 2) {
+                if (len > columns - 2) {
                         const char *ellipsis = "[...] ";
                         waddstr(stdscr, ellipsis);
-                        skip = len - (COLS - 2 - strlen(ellipsis));
+                        skip = len - (columns - 2 - strlen(ellipsis));
                 }
 
                 for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
@@ -298,7 +303,7 @@ void dialog_clear(void)
                                 skip--;
                 }
 
-                for (i = len + 1; i < COLS - 1; i++)
+                for (i = len + 1; i < columns - 1; i++)
                         waddch(stdscr, ACS_HLINE);
         }
         wnoutrefresh(stdscr);
diff --git a/scripts/kconfig/lxdialog/yesno.c b/scripts/kconfig/lxdialog/yesno.c
index abb0c392e01b..676fb2f824a3 100644
--- a/scripts/kconfig/lxdialog/yesno.c
+++ b/scripts/kconfig/lxdialog/yesno.c
@@ -51,8 +51,8 @@ do_resize:
                 return -ERRDISPLAYTOOSMALL;
 
         /* center dialog box on screen */
-        x = (COLS - width) / 2;
-        y = (LINES - height) / 2;
+        x = (getmaxx(stdscr) - width) / 2;
+        y = (getmaxy(stdscr) - height) / 2;
 
         draw_shadow(stdscr, y, x, height, width);