atk/atkvalue.h

   1 /* ATK -  Accessibility Toolkit
   2  * Copyright 2001 Sun Microsystems Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __ATK_VALUE_H__
  21 #define __ATK_VALUE_H__
  22
  23 #if defined(ATK_DISABLE_SINGLE_INCLUDES) && !defined (__ATK_H_INSIDE__) && !defined (ATK_COMPILATION)
  24 #error "Only <atk/atk.h> can be included directly."
  25 #endif
  26
  27 #include <atk/atkobject.h>
  28 #include <atk/atkrange.h>
  29
  30 G_BEGIN_DECLS
  31
  32 #define ATK_TYPE_VALUE                    (atk_value_get_type ())
  33 #define ATK_IS_VALUE(obj)                 G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_VALUE)
  34 #define ATK_VALUE(obj)                    G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_VALUE, AtkValue)
  35 #define ATK_VALUE_GET_IFACE(obj)          (G_TYPE_INSTANCE_GET_INTERFACE ((obj), ATK_TYPE_VALUE, AtkValueIface))
  36
  37 #ifndef _TYPEDEF_ATK_VALUE_
  38 #define _TYPEDEF_ATK_VALUE__
  39 typedef struct _AtkValue AtkValue;
  40 #endif
  41 typedef struct _AtkValueIface AtkValueIface;
  42
  43 /**
  44  * AtkValueType:
  45  *
  46  * Default types for a given value. Those are defined in order to
  47  * easily get localized strings to describe a given value or a given
  48  * subrange, using atk_value_type_get_localized_name().
  49  *
  50  */
  51 typedef enum
  52 {
  53   ATK_VALUE_VERY_WEAK,
  54   ATK_VALUE_WEAK,
  55   ATK_VALUE_ACCEPTABLE,
  56   ATK_VALUE_STRONG,
  57   ATK_VALUE_VERY_STRONG,
  58   ATK_VALUE_VERY_LOW,
  59   ATK_VALUE_LOW,
  60   ATK_VALUE_MEDIUM,
  61   ATK_VALUE_HIGH,
  62   ATK_VALUE_VERY_HIGH,
  63   ATK_VALUE_VERY_BAD,
  64   ATK_VALUE_BAD,
  65   ATK_VALUE_GOOD,
  66   ATK_VALUE_VERY_GOOD,
  67   ATK_VALUE_BEST,
  68   ATK_VALUE_LAST_DEFINED
  69 }AtkValueType;
  70
  71 /**
  72  * AtkValueIface:
  73  * @get_current_value: This virtual function is deprecated since 2.12
  74  *  and it should not be overriden.
  75  * @get_maximum_value: This virtual function is deprecated since 2.12
  76  *  and it should not be overriden.
  77  * @get_minimum_value: This virtual function is deprecated since 2.12
  78  *  and it should not be overriden.
  79  * @set_current_value: This virtual function is deprecated since 2.12
  80  *  and it should not be overriden.
  81  * @get_minimum_increment: This virtual function is deprecated since
  82  *  2.12 and it should not be overriden.
  83  * @get_value_and_text: gets the current value and the human readable
  84  * text alternative (if available) of this object. Since 2.12.
  85  * @get_range: gets the range that defines the minimum and maximum
  86  *  value of this object. Returns NULL if there is no range
  87  *  defined. Since 2.12.
  88  * @get_increment: gets the minimum increment by which the value of
  89  *  this object may be changed. If zero it is undefined. Since 2.12.
  90  * @get_sub_ranges: returns a list of different subranges, and their
  91  *  description (if available) of this object. Returns NULL if there
  92  *  is not subranges defined. Since 2.12.
  93  * @set_value: sets the value of this object. Since 2.12.
  94  */
  95 struct _AtkValueIface
  96 {
  97   GTypeInterface parent;
  98
  99   /*<deprecated>*/
 100   void     (* get_current_value) (AtkValue     *obj,
 101                                   GValue       *value);
 102   void     (* get_maximum_value) (AtkValue     *obj,
 103                                   GValue       *value);
 104   void     (* get_minimum_value) (AtkValue     *obj,
 105                                   GValue       *value);
 106   gboolean (* set_current_value) (AtkValue     *obj,
 107                                   const GValue *value);
 108   void     (* get_minimum_increment) (AtkValue   *obj,
 109                                       GValue     *value);
 110   /*</deprecated>*/
 111   void     (* get_value_and_text) (AtkValue *obj,
 112                                    gdouble *value,
 113                                    gchar  **text);
 114   AtkRange*(* get_range)          (AtkValue *obj);
 115   gdouble  (* get_increment)      (AtkValue *obj);
 116   GSList*  (* get_sub_ranges)     (AtkValue *obj);
 117   void     (* set_value)          (AtkValue     *obj,
 118                                    const gdouble new_value);
 119
 120 };
 121
 122 ATK_AVAILABLE_IN_ALL
 123 GType            atk_value_get_type (void);
 124
 125 ATK_DEPRECATED_IN_2_12_FOR(atk_value_get_value_and_text)
 126 void      atk_value_get_current_value (AtkValue     *obj,
 127                                        GValue       *value);
 128
 129 ATK_DEPRECATED_IN_2_12_FOR(atk_value_get_range)
 130 void     atk_value_get_maximum_value  (AtkValue     *obj,
 131                                        GValue       *value);
 132 ATK_DEPRECATED_IN_2_12_FOR(atk_value_get_range)
 133 void     atk_value_get_minimum_value  (AtkValue     *obj,
 134                                        GValue       *value);
 135 ATK_DEPRECATED_IN_2_12_FOR(atk_value_set_value)
 136 gboolean atk_value_set_current_value  (AtkValue     *obj,
 137                                        const GValue *value);
 138 ATK_DEPRECATED_IN_2_12_FOR(atk_value_get_increment)
 139 void     atk_value_get_minimum_increment  (AtkValue     *obj,
 140                                            GValue       *value);
 141
 142 ATK_AVAILABLE_IN_2_12
 143 void      atk_value_get_value_and_text (AtkValue *obj,
 144                                         gdouble *value,
 145                                         gchar  **text);
 146 ATK_AVAILABLE_IN_2_12
 147 AtkRange* atk_value_get_range          (AtkValue *obj);
 148 ATK_AVAILABLE_IN_2_12
 149 gdouble   atk_value_get_increment      (AtkValue *obj);
 150 ATK_AVAILABLE_IN_2_12
 151 GSList*   atk_value_get_sub_ranges     (AtkValue *obj);
 152 ATK_AVAILABLE_IN_2_12
 153 void      atk_value_set_value          (AtkValue     *obj,
 154                                         const gdouble new_value);
 155 /* AtkValueType methods */
 156 ATK_AVAILABLE_IN_ALL
 157 const gchar* atk_value_type_get_name           (AtkValueType value_type);
 158 ATK_AVAILABLE_IN_ALL
 159 const gchar* atk_value_type_get_localized_name (AtkValueType value_type);
 160
 161 G_END_DECLS
 162
 163 #endif /* __ATK_VALUE_H__ */