XForms: Peculiar behavior of fl_get_folder_area()

From: j.w.c.a. lokin (lokin@signaal.nl)
Date: Fri Apr 07 2000 - 08:02:25 EDT

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    # To subscribers of the xforms list from "j.w.c.a. lokin" <lokin@signaal.nl> :

    Hi,

    The program below illustrates (some of) the peculiarities of
    fl_get_folder_area().

    1) the behavior for all tabs is wrong although it differs for the
       first and later calls: For the first, h seems to be too large,
       and y seems ok, for later calls h seems ok and y seems too large.

    2) closer inspection reveals that the claim that x and y are
       relative to the top level form are not true, they appears
       approx. twice as large.

    Am I perhaps misinterpreting something?

    I'm running 0.89 on Solaris 2.6. 

    -- 
-+- Jan Willem Lokin -+-

    #include <stdio.h>
#include "forms.h"

    #define butW 60
#define butH 15

    static void add_tab (FL_OBJECT *folder, char *txt)
{
  FL_FORM *form;
  FL_Coord x, y, w, h;

      fl_get_folder_area (folder, &x, &y, &w, &h);
  fprintf  (stderr, "x %d y %d w %d h %d\n", x, y, w, h);
  form = fl_bgn_form (FL_BORDER_BOX, w, h);

      /* top left */
  fl_add_box (FL_UP_BOX, x, y, butW, butH, txt);
  /* bottom_left, too low ?? */
  fl_add_box (FL_UP_BOX, x, y + h - butH, butW, butH, txt);
  /* top right, too far right ?? */ 
  fl_add_box (FL_UP_BOX, x + w - butW, y, butW, butH, txt);
  /* bottom_right, ?? */
  fl_add_text (FL_UP_BOX, x + w - butW, y + h - butH, butW, butH, txt);

      fl_end_form ();
  fl_addto_tabfolder (folder, txt, form);
}

    static void create_tabs ()
{
  const FL_Coord iw = 6 * butW, ih = 8 * butH, bw = 10;
  FL_FORM *form = fl_bgn_form (FL_FLAT_BOX, iw + 2 * bw, ih + 2 * bw);
  FL_OBJECT *folder = fl_add_tabfolder (FL_TOP_TABFOLDER, bw, bw, iw,
ih, 0);
  fl_end_form ();

      add_tab (folder, "Tab 1");
  add_tab (folder, "Tab 2");
  add_tab (folder, "Tab 3");
  add_tab (folder, "Tab 4");

      fl_show_form (form, FL_PLACE_FREE, FL_FULLBORDER, "Tabs");
}

    int main (int argc, char *argv[])
{
  fl_initialize (&argc, argv, 0, 0, 0);
  create_tabs ();
  fl_do_forms ();
  fprintf (stderr, " *** Unexpected fallthru ***\n");
  return 0;
}
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