kconfig/lxdialog: support resize
In all dialogs now properly catch KEY_RESIZE and take proper action.
In mconf try to behave sensibly when a dialog routine returns
-ERRDISPLAYTOOSMALL.
The original check for a screnn size of 80x19 is kept for now.
It may make sense to remove it later, but thats anyway what
much text is adjusted for.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/kconfig/lxdialog/textbox.c b/scripts/kconfig/lxdialog/textbox.c
index a99e1f4..fabfc1a 100644
--- a/scripts/kconfig/lxdialog/textbox.c
+++ b/scripts/kconfig/lxdialog/textbox.c
@@ -25,7 +25,7 @@
static void print_page(WINDOW * win, int height, int width);
static void print_line(WINDOW * win, int row, int width);
static char *get_line(void);
-static void print_position(WINDOW * win, int height, int width);
+static void print_position(WINDOW * win);
static int hscroll;
static int begin_reached, end_reached, page_length;
@@ -33,14 +33,28 @@
static const char *page;
/*
+ * refresh window content
+ */
+static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw,
+ int cur_y, int cur_x)
+{
+ print_page(box, boxh, boxw);
+ print_position(dialog);
+ wmove(dialog, cur_y, cur_x); /* Restore cursor position */
+ wrefresh(dialog);
+}
+
+
+/*
* Display text from a file in a dialog box.
*/
-int dialog_textbox(const char *title, const char *tbuf, int height, int width)
+int dialog_textbox(const char *title, const char *tbuf,
+ int initial_height, int initial_width)
{
int i, x, y, cur_x, cur_y, key = 0;
- int texth, textw;
+ int height, width, boxh, boxw;
int passed_end;
- WINDOW *dialog, *text;
+ WINDOW *dialog, *box;
begin_reached = 1;
end_reached = 0;
@@ -49,6 +63,25 @@
buf = tbuf;
page = buf; /* page is pointer to start of page to be displayed */
+do_resize:
+ getmaxyx(stdscr, height, width);
+ if (height < 8 || width < 8)
+ return -ERRDISPLAYTOOSMALL;
+ if (initial_height != 0)
+ height = initial_height;
+ else
+ if (height > 4)
+ height -= 4;
+ else
+ height = 0;
+ if (initial_width != 0)
+ width = initial_width;
+ else
+ if (width > 5)
+ width -= 5;
+ else
+ width = 0;
+
/* center dialog box on screen */
x = (COLS - width) / 2;
y = (LINES - height) / 2;
@@ -58,14 +91,14 @@
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
- /* Create window for text region, used for scrolling text */
- texth = height - 4;
- textw = width - 2;
- text = subwin(dialog, texth, textw, y + 1, x + 1);
- wattrset(text, dlg.dialog.atr);
- wbkgdset(text, dlg.dialog.atr & A_COLOR);
+ /* Create window for box region, used for scrolling text */
+ boxh = height - 4;
+ boxw = width - 2;
+ box = subwin(dialog, boxh, boxw, y + 1, x + 1);
+ wattrset(box, dlg.dialog.atr);
+ wbkgdset(box, dlg.dialog.atr & A_COLOR);
- keypad(text, TRUE);
+ keypad(box, TRUE);
/* register the new window, along with its borders */
draw_box(dialog, 0, 0, height, width,
@@ -86,11 +119,8 @@
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Print first page of text */
- attr_clear(text, texth, textw, dlg.dialog.atr);
- print_page(text, texth, textw);
- print_position(dialog, height, width);
- wmove(dialog, cur_y, cur_x); /* Restore cursor position */
- wrefresh(dialog);
+ attr_clear(box, boxh, boxw, dlg.dialog.atr);
+ refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x);
while ((key != KEY_ESC) && (key != '\n')) {
key = wgetch(dialog);
@@ -99,7 +129,7 @@
case 'e':
case 'X':
case 'x':
- delwin(text);
+ delwin(box);
delwin(dialog);
return 0;
case 'g': /* First page */
@@ -107,10 +137,8 @@
if (!begin_reached) {
begin_reached = 1;
page = buf;
- print_page(text, texth, textw);
- print_position(dialog, height, width);
- wmove(dialog, cur_y, cur_x); /* Restore cursor position */
- wrefresh(dialog);
+ refresh_text_box(dialog, box, boxh, boxw,
+ cur_y, cur_x);
}
break;
case 'G': /* Last page */
@@ -119,11 +147,9 @@
end_reached = 1;
/* point to last char in buf */
page = buf + strlen(buf);
- back_lines(texth);
- print_page(text, texth, textw);
- print_position(dialog, height, width);
- wmove(dialog, cur_y, cur_x); /* Restore cursor position */
- wrefresh(dialog);
+ back_lines(boxh);
+ refresh_text_box(dialog, box, boxh, boxw,
+ cur_y, cur_x);
break;
case 'K': /* Previous line */
case 'k':
@@ -138,16 +164,16 @@
* point to start of next page. This is done
* by calling get_line() in the following
* 'for' loop. */
- scrollok(text, TRUE);
- wscrl(text, -1); /* Scroll text region down one line */
- scrollok(text, FALSE);
+ scrollok(box, TRUE);
+ wscrl(box, -1); /* Scroll box region down one line */
+ scrollok(box, FALSE);
page_length = 0;
passed_end = 0;
- for (i = 0; i < texth; i++) {
+ for (i = 0; i < boxh; i++) {
if (!i) {
/* print first line of page */
- print_line(text, 0, textw);
- wnoutrefresh(text);
+ print_line(box, 0, boxw);
+ wnoutrefresh(box);
} else
/* Called to update 'end_reached' and 'page' */
get_line();
@@ -157,7 +183,7 @@
passed_end = 1;
}
- print_position(dialog, height, width);
+ print_position(dialog);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
@@ -167,23 +193,21 @@
case KEY_PPAGE:
if (begin_reached)
break;
- back_lines(page_length + texth);
- print_page(text, texth, textw);
- print_position(dialog, height, width);
- wmove(dialog, cur_y, cur_x);
- wrefresh(dialog);
+ back_lines(page_length + boxh);
+ refresh_text_box(dialog, box, boxh, boxw,
+ cur_y, cur_x);
break;
case 'J': /* Next line */
case 'j':
case KEY_DOWN:
if (!end_reached) {
begin_reached = 0;
- scrollok(text, TRUE);
- scroll(text); /* Scroll text region up one line */
- scrollok(text, FALSE);
- print_line(text, texth - 1, textw);
- wnoutrefresh(text);
- print_position(dialog, height, width);
+ scrollok(box, TRUE);
+ scroll(box); /* Scroll box region up one line */
+ scrollok(box, FALSE);
+ print_line(box, boxh - 1, boxw);
+ wnoutrefresh(box);
+ print_position(dialog);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
@@ -194,10 +218,8 @@
break;
begin_reached = 0;
- print_page(text, texth, textw);
- print_position(dialog, height, width);
- wmove(dialog, cur_y, cur_x);
- wrefresh(dialog);
+ refresh_text_box(dialog, box, boxh, boxw,
+ cur_y, cur_x);
break;
case '0': /* Beginning of line */
case 'H': /* Scroll left */
@@ -212,9 +234,8 @@
hscroll--;
/* Reprint current page to scroll horizontally */
back_lines(page_length);
- print_page(text, texth, textw);
- wmove(dialog, cur_y, cur_x);
- wrefresh(dialog);
+ refresh_text_box(dialog, box, boxh, boxw,
+ cur_y, cur_x);
break;
case 'L': /* Scroll right */
case 'l':
@@ -224,16 +245,21 @@
hscroll++;
/* Reprint current page to scroll horizontally */
back_lines(page_length);
- print_page(text, texth, textw);
- wmove(dialog, cur_y, cur_x);
- wrefresh(dialog);
+ refresh_text_box(dialog, box, boxh, boxw,
+ cur_y, cur_x);
break;
case KEY_ESC:
key = on_key_esc(dialog);
break;
+ case KEY_RESIZE:
+ back_lines(height);
+ delwin(box);
+ delwin(dialog);
+ on_key_resize();
+ goto do_resize;
}
}
- delwin(text);
+ delwin(box);
delwin(dialog);
return key; /* ESC pressed */
}
@@ -353,13 +379,13 @@
/*
* Print current position
*/
-static void print_position(WINDOW * win, int height, int width)
+static void print_position(WINDOW * win)
{
int percent;
wattrset(win, dlg.position_indicator.atr);
wbkgdset(win, dlg.position_indicator.atr & A_COLOR);
percent = (page - buf) * 100 / strlen(buf);
- wmove(win, height - 3, width - 9);
+ wmove(win, getmaxy(win) - 3, getmaxx(win) - 9);
wprintw(win, "(%3d%%)", percent);
}
