lwlib/lwlib.h

   1 /*
   2 Copyright (C) 1992, 1993 Lucid, Inc.
   3 Copyright (C) 1994, 1999-2013 Free Software Foundation, Inc.
   4
   5 This file is part of the Lucid Widget Library.
   6
   7 The Lucid Widget Library is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 1, or (at your option)
  10 any later version.
  11
  12 The Lucid Widget Library is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20
  21 #ifndef LWLIB_H
  22 #define LWLIB_H
  23
  24 #include <X11/Intrinsic.h>
  25
  26 /*
  27 ** Widget values depend on the Widget type:
  28 **
  29 ** widget:   (name value key enabled data contents/selected)
  30 **
  31 ** label:    ("name" "string" NULL NULL NULL NULL)
  32 ** button:   ("name" "string" "key" T/F data <default-button-p>)
  33 ** button w/menu:
  34 **           ("name" "string" "key" T/F data (label|button|button w/menu...))
  35 ** menubar:  ("name" NULL NULL T/F data (button w/menu))
  36 ** selectable thing:
  37 **           ("name" "string" "key" T/F data T/F)
  38 ** checkbox: selectable thing
  39 ** radio:    ("name" NULL NULL T/F data (selectable thing...))
  40 ** strings:  ("name" NULL NULL T/F data (selectable thing...))
  41 ** text:     ("name" "string" <ign> T/F data)
  42 ** main:     ("name")
  43 */
  44
  45 typedef unsigned long LWLIB_ID;
  46
  47 typedef enum _change_type
  48 {
  49   NO_CHANGE = 0,
  50   INVISIBLE_CHANGE = 1,
  51   VISIBLE_CHANGE = 2,
  52   STRUCTURAL_CHANGE = 3
  53 } change_type;
  54
  55 enum button_type
  56 {
  57   BUTTON_TYPE_NONE,
  58   BUTTON_TYPE_TOGGLE,
  59   BUTTON_TYPE_RADIO
  60 };
  61
  62 /* Menu separator types.  */
  63
  64 enum menu_separator
  65 {
  66   /* These values are Motif compatible.  */
  67   SEPARATOR_NO_LINE,
  68   SEPARATOR_SINGLE_LINE,
  69   SEPARATOR_DOUBLE_LINE,
  70   SEPARATOR_SINGLE_DASHED_LINE,
  71   SEPARATOR_DOUBLE_DASHED_LINE,
  72   SEPARATOR_SHADOW_ETCHED_IN,
  73   SEPARATOR_SHADOW_ETCHED_OUT,
  74   SEPARATOR_SHADOW_ETCHED_IN_DASH,
  75   SEPARATOR_SHADOW_ETCHED_OUT_DASH,
  76
  77   /* The following are supported by Lucid menus.  */
  78   SEPARATOR_SHADOW_DOUBLE_ETCHED_IN,
  79   SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT,
  80   SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH,
  81   SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH
  82 };
  83
  84 typedef struct _widget_value
  85 {
  86   /* name of widget */
  87   Lisp_Object   lname;
  88   char*         name;
  89   /* value (meaning depend on widget type) */
  90   char*         value;
  91   /* keyboard equivalent. no implications for XtTranslations */
  92   Lisp_Object   lkey;
  93   char*         key;
  94   /* Help string or nil if none.
  95      GC finds this string through the frame's menu_bar_vector
  96      or through menu_items.  */
  97   Lisp_Object   help;
  98   /* true if enabled */
  99   Boolean       enabled;
 100   /* true if selected */
 101   Boolean       selected;
 102   /* true if was edited (maintained by get_value) */
 103   Boolean       edited;
 104   /* The type of a button.  */
 105   enum button_type button_type;
 106   /* true if has changed (maintained by lw library) */
 107   change_type   change;
 108   /* true if this widget itself has changed,
 109      but not counting the other widgets found in the `next' field.  */
 110   change_type   this_one_change;
 111   /* Contents of the sub-widgets, also selected slot for checkbox */
 112   struct _widget_value* contents;
 113   /* data passed to callback */
 114   XtPointer     call_data;
 115   /* next one in the list */
 116   struct _widget_value* next;
 117   /* slot for the toolkit dependent part.  Always initialize to NULL. */
 118   void* toolkit_data;
 119   /* tell us if we should free the toolkit data slot when freeing the
 120      widget_value itself. */
 121   Boolean free_toolkit_data;
 122
 123   /* we resource the widget_value structures; this points to the next
 124      one on the free list if this one has been deallocated.
 125    */
 126   struct _widget_value *free_list;
 127 } widget_value;
 128
 129
 130 typedef void (*lw_callback) (Widget w, LWLIB_ID id, void* data);
 131
 132 void  lw_register_widget (const char* type, const char* name, LWLIB_ID id,
 133                           widget_value* val, lw_callback pre_activate_cb,
 134                           lw_callback selection_cb,
 135                           lw_callback post_activate_cb,
 136                           lw_callback highlight_cb);
 137 Widget lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p);
 138 Widget lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p);
 139 Widget lw_create_widget (const char* type, const char* name, LWLIB_ID id,
 140                          widget_value* val, Widget parent, Boolean pop_up_p,
 141                          lw_callback pre_activate_cb,
 142                          lw_callback selection_cb,
 143                          lw_callback post_activate_cb,
 144                          lw_callback highlight_cb);
 145 LWLIB_ID lw_get_widget_id (Widget w);
 146 int lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p);
 147 void lw_destroy_widget (Widget w);
 148 void lw_destroy_all_widgets (LWLIB_ID id);
 149 void lw_destroy_everything (void);
 150 void lw_destroy_all_pop_ups (void);
 151 Widget lw_raise_all_pop_up_widgets (void);
 152 widget_value* lw_get_all_values (LWLIB_ID id);
 153 Boolean lw_get_some_values (LWLIB_ID id, widget_value* val);
 154 void lw_pop_up_all_widgets (LWLIB_ID id);
 155 void lw_pop_down_all_widgets (LWLIB_ID id);
 156 widget_value *malloc_widget_value (void);
 157 void free_widget_value (widget_value *);
 158 void lw_popup_menu (Widget, XEvent *);
 159
 160 /* Toolkit independent way of focusing on a Widget at the Xt level. */
 161 void lw_set_keyboard_focus (Widget parent, Widget w);
 162
 163 /* Silly Energize hack to invert the "sheet" button */
 164 void lw_show_busy (Widget w, Boolean busy);
 165
 166 /* Silly hack to assist with Lucid/Athena geometry management. */
 167 void lw_refigure_widget (Widget w, Boolean doit);
 168
 169 /* Toolkit independent way of determining if an event occurred on a
 170    menubar. */
 171 Boolean lw_window_is_in_menubar (Window win, Widget menubar_widget);
 172
 173 /* Manage resizing: TRUE permits resizing widget w; FALSE disallows it. */
 174 void lw_allow_resizing (Widget w, Boolean flag);
 175
 176 /* Set up the main window. */
 177 void lw_set_main_areas (Widget parent,
 178                         Widget menubar,
 179                         Widget work_area);
 180
 181 /* Value is non-zero if LABEL is a menu separator.  If it is, *TYPE is
 182    set to an appropriate enumerator of type enum menu_separator.
 183    MOTIF_P non-zero means map separator types not supported by Motif
 184    to similar ones that are supported.  */
 185
 186 int lw_separator_p (const char *label, enum menu_separator *type,
 187                     int motif_p);
 188
 189 #endif /* LWLIB_H */