| 1 | /* ATK - Accessibility Toolkit |
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| 2 | * Copyright 2001 Sun Microsystems Inc. |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Library General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Library General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Library General Public |
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| 15 | * License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | #ifndef __ATK_VALUE_H__ |
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| 21 | #define __ATK_VALUE_H__ |
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| 22 | |
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| 23 | #include <atk/atkobject.h> |
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| 24 | |
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| 25 | #ifdef __cplusplus |
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| 26 | extern "C" { |
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| 27 | #endif /* __cplusplus */ |
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| 28 | |
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| 29 | /* |
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| 30 | * The AtkValue interface should be supported by any object that |
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| 31 | * supports a numerical value (e.g., a scroll bar). This interface |
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| 32 | * provides the standard mechanism for an assistive technology to |
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| 33 | * determine and set the numerical value as well as get the minimum |
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| 34 | * and maximum values. |
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| 35 | */ |
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| 36 | |
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| 37 | #define ATK_TYPE_VALUE (atk_value_get_type ()) |
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| 38 | #define ATK_IS_VALUE(obj) G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_VALUE) |
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| 39 | #define ATK_VALUE(obj) G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_VALUE, AtkValue) |
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| 40 | #define ATK_VALUE_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), ATK_TYPE_VALUE, AtkValueIface)) |
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| 41 | |
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| 42 | #ifndef _TYPEDEF_ATK_VALUE_ |
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| 43 | #define _TYPEDEF_ATK_VALUE__ |
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| 44 | typedef struct _AtkValue AtkValue; |
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| 45 | #endif |
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| 46 | typedef struct _AtkValueIface AtkValueIface; |
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| 47 | |
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| 48 | struct _AtkValueIface |
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| 49 | { |
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| 50 | GTypeInterface parent; |
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| 51 | |
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| 52 | void (* get_current_value) (AtkValue *obj, |
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| 53 | GValue *value); |
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| 54 | void (* get_maximum_value) (AtkValue *obj, |
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| 55 | GValue *value); |
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| 56 | void (* get_minimum_value) (AtkValue *obj, |
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| 57 | GValue *value); |
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| 58 | gboolean (* set_current_value) (AtkValue *obj, |
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| 59 | const GValue *value); |
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| 60 | |
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| 61 | AtkFunction pad1; |
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| 62 | AtkFunction pad2; |
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| 63 | }; |
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| 64 | |
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| 65 | GType atk_value_get_type (void); |
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| 66 | |
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| 67 | void atk_value_get_current_value (AtkValue *obj, |
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| 68 | GValue *value); |
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| 69 | |
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| 70 | |
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| 71 | void atk_value_get_maximum_value (AtkValue *obj, |
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| 72 | GValue *value); |
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| 73 | |
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| 74 | void atk_value_get_minimum_value (AtkValue *obj, |
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| 75 | GValue *value); |
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| 76 | |
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| 77 | gboolean atk_value_set_current_value (AtkValue *obj, |
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| 78 | const GValue *value); |
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| 79 | |
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| 80 | /* |
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| 81 | * Additional GObject properties exported by GaccessibleValue: |
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| 82 | * "accessible_value" |
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| 83 | * (the accessible value has changed) |
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| 84 | */ |
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| 85 | |
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| 86 | |
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| 87 | #ifdef __cplusplus |
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| 88 | } |
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| 89 | #endif /* __cplusplus */ |
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| 90 | |
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| 91 | |
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| 92 | #endif /* __ATK_VALUE_H__ */ |
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