Merge branch '1555_help_buttonbar_draw'

* 1555_help_buttonbar_draw:
  Ticket #1555: draw buttonbar of help dialog.

src/help.c

@@ -592,8 +592,14 @@ static void prev_node_cmd (void *vp)
 static cb_ret_t
 md_callback (Widget *w, widget_msg_t msg, int parm)
 {
-    (void) w;
-    return default_proc (msg, parm);
+    switch (msg) {
+    case WIDGET_RESIZED:
+	w->lines = help_lines;
+	return MSG_HANDLED;
+
+    default:
+	return default_proc (msg, parm);
+    }
 }
 
 static Widget *
@@ -744,16 +750,24 @@ help_handle_key (struct Dlg_head *h, int c)
 
     default:
 	return MSG_NOT_HANDLED;
-	    
     }
     help_callback (h, DLG_DRAW, 0);
     return MSG_HANDLED;
 }
 
 static cb_ret_t
-help_callback (struct Dlg_head *h, dlg_msg_t msg, int parm)
+help_callback (Dlg_head *h, dlg_msg_t msg, int parm)
 {
+    WButtonBar *bb;
+
     switch (msg) {
+    case DLG_RESIZE:
+	help_lines = min (LINES - 4, max (2 * LINES / 3, 18));
+	dlg_set_size (h, help_lines + 4, HELP_WINDOW_WIDTH + 4);
+	bb = find_buttonbar (h);
+	widget_set_size (&bb->widget, LINES - 1, 0, 1, COLS);
+	return MSG_HANDLED;
+
     case DLG_DRAW:
 	common_dialog_repaint (h);
 	help_show (h, currentpoint);
@@ -862,8 +876,8 @@ interactive_display (const char *filename, const char *node)
     }
 
     help_bar = buttonbar_new (1);
-    ((Widget *) help_bar)->y -= whelp->y;
-    ((Widget *) help_bar)->x -= whelp->x;
+    help_bar->widget.y -= whelp->y;
+    help_bar->widget.x -= whelp->x;
 
     md = mousedispatch_new (1, 1, help_lines, HELP_WINDOW_WIDTH - 2);
 

src/layout.c

@@ -676,7 +676,7 @@ setup_panels (void)
 	widget_set_size (&the_prompt->widget, LINES, COLS, 0, 0);
     }
 
-    widget_set_size ((Widget *) the_bar, LINES - 1, 0, keybar_visible, COLS);
+    widget_set_size (&the_bar->widget, LINES - 1, 0, keybar_visible, COLS);
     buttonbar_set_visible (the_bar, keybar_visible);
 
     /* Output window */

src/widget.c

@@ -55,24 +55,6 @@
 
 #define HISTORY_FILE_NAME ".mc/history"
 
-/* number of bttons in buttonbar */
-#define BUTTONBAR_LABELS_NUM	10
-
-struct WButtonBar {
-    Widget widget;
-    int    visible;		/* Is it visible? */
-    int btn_width;              /* width of one button */
-    struct {
-	char   *text;
-	enum { BBFUNC_NONE, BBFUNC_VOID, BBFUNC_PTR } tag;
-	union {
-	    voidfn fn_void;
-	    buttonbarfn fn_ptr;
-	} u;
-	void   *data;
-    } labels [BUTTONBAR_LABELS_NUM];
-};
-
 static void
 widget_selectcolor (Widget *w, gboolean focused, gboolean hotkey)
 {
@@ -2584,12 +2566,14 @@ buttonbar_event (Gpm_Event *event, void *data)
 WButtonBar *
 buttonbar_new (int visible)
 {
+    WButtonBar *bb;
     int i;
-    WButtonBar *bb = g_new (WButtonBar, 1);
 
-    init_widget (&bb->widget, LINES-1, 0, 1, COLS,
+    bb = g_new0 (WButtonBar, 1);
+
+    init_widget (&bb->widget, LINES - 1, 0, 1, COLS,
 		 buttonbar_callback, buttonbar_event);
-    
+    bb->widget.pos_flags = WPOS_KEEP_HORZ | WPOS_KEEP_BOTTOM;
     bb->visible = visible;
     for (i = 0; i < BUTTONBAR_LABELS_NUM; i++){
 	bb->labels[i].text = NULL;

src/widget.h

@@ -158,6 +158,27 @@ struct WListbox {
     int cursor_x, cursor_y;	/* Cache the values */
 };
 
+/* number of bttons in buttonbar */
+#define BUTTONBAR_LABELS_NUM	10
+
+typedef void (*voidfn)(void);
+typedef void (*buttonbarfn)(void *);
+
+typedef struct WButtonBar {
+    Widget widget;
+    int visible;		/* Is it visible? */
+    int btn_width;		/* width of one button */
+    struct {
+	char   *text;
+	enum { BBFUNC_NONE, BBFUNC_VOID, BBFUNC_PTR } tag;
+	union {
+	    voidfn fn_void;
+	    buttonbarfn fn_ptr;
+	} u;
+	void   *data;
+    } labels [BUTTONBAR_LABELS_NUM];
+} WButtonBar;
+
 typedef struct WGroupbox {
     Widget widget;
     char *title;
@@ -176,6 +197,7 @@ WInput  *input_new    (int y, int x, int color, int len, const char *text, const
 WLabel  *label_new    (int y, int x, const char *text);
 WGauge  *gauge_new    (int y, int x, int shown, int max, int current);
 WListbox *listbox_new (int y, int x, int height, int width, lcback callback);
+WButtonBar *buttonbar_new (int visible);
 WGroupbox *groupbox_new (int y, int x, int height, int width, const char *title);
 
 /* Input lines */
@@ -229,16 +251,7 @@ enum append_pos {
 char *listbox_add_item (WListbox *l, enum append_pos pos, int
 			hotkey, const char *text, void *data);
 
-/* Hintbar routines */
 
-/* Buttonbar */
-
-typedef void (*voidfn)(void);
-typedef void (*buttonbarfn)(void *);
-
-typedef struct WButtonBar WButtonBar;
-
-WButtonBar *buttonbar_new (int visible);
 WButtonBar *find_buttonbar (Dlg_head *h);
 void buttonbar_clear_label (Dlg_head *, int idx);
 void buttonbar_set_label (Dlg_head *, int index, const char *text, voidfn);