AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity

Add GtkAccessibleValue

Browse Source 
All accessible properties and states may have one of the following
types:

 - true/false
 - true/false/undefined
 - true/false/mixed/undefined
 - reference (to another UI element)
 - reference list
 - integer
 - number (real numerical value)
 - string
 - token (one of a limited set of allowed values)
 - token list

See: https://www.w3.org/WAI/PF/aria/states_and_properties#propcharacteristic_value

The GtkAccessibleValue is a simple reference counted type that can be
"subclassed" to implement each value type.

This initial commit adds GtkAccessibleValue and the basic subclasses for
plain boolean, tristate (true/false/undefined), and token types,
including statically allocated values that can be shared instead of
allocated.
This commit is contained in:
Emmanuele Bassi 2020-07-08 16:34:32 +01:00
parent 14faec3ce2
commit 55120a25db
5 changed files with 1119 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

426
gtk/gtkaccessiblevalue.c Normal file
View File

@ -0,0 +1,426 @@
/* gtkaccessiblevalue.c: Accessible value
*
* Copyright 2020 GNOME Foundation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*< private >
* SECTION: gtkaccessiblevalue
* @Title: GtkAccessibleValue
* @Short_description: Container for accessible state and property values
*
* GtkAccessibleValue is a reference counted, generic container for values used
* to represent the state and properties of a #GtkAccessible implementation.
*
* There are two kinds of accessible value types:
*
* - hard coded, static values; GTK owns them, and their contents, and are
* guaranteed to exist for the duration of the application's life time
* - dynamic values; the accessible state owns the value and their contents,
* and they can be allocated and freed
*
* Typically, the former type of values is used for boolean, tristate, and
* token value; the latter is used for numbers, strings, and token lists.
*
* For more information on the types of values, see the [WAI-ARIA](https://www.w3.org/WAI/PF/aria/states_and_properties#propcharacteristic_value)
* reference.
*/
#include "config.h"
#include "gtkaccessiblevalueprivate.h"
#include "gtkenums.h"
G_DEFINE_QUARK (gtk-accessible-value-error-quark, gtk_accessible_value_error)
G_DEFINE_BOXED_TYPE (GtkAccessibleValue, gtk_accessible_value,
gtk_accessible_value_ref,
gtk_accessible_value_unref)
/*< private >
* gtk_accessible_value_alloc:
* @value_class: a #GtkAccessibleValueClass structure
*
* Allocates a new #GtkAccessibleValue subclass using @value_class as the
* type definition.
*
* Returns: (transfer full): the newly allocated #GtkAccessibleValue
*/
GtkAccessibleValue *
gtk_accessible_value_alloc (const GtkAccessibleValueClass *value_class)
{
g_return_val_if_fail (value_class != NULL, NULL);
g_return_val_if_fail (value_class->instance_size >= sizeof (GtkAccessibleValue), NULL);
GtkAccessibleValue *res = g_malloc0 (value_class->instance_size);
/* We do not use grefcount, here, because we want to have statically
* allocated GtkAccessibleValue subclasses, and those cannot be initialized
* with g_ref_count_init()
*/
res->ref_count = 1;
res->value_class = value_class;
if (res->value_class->init != NULL)
res->value_class->init (res);
return res;
}
/*< private >
* gtk_accessible_value_ref:
* @self: a #GtkAccessibleValue
*
* Acquires a reference on the given #GtkAccessibleValue.
*
* Returns: (transfer full): the value, with an additional reference
*/
GtkAccessibleValue *
gtk_accessible_value_ref (GtkAccessibleValue *self)
{
g_return_val_if_fail (self != NULL, NULL);
self->ref_count += 1;
return self;
}
/*< private >
* gtk_accessible_value_unref:
* @self: (transfer full): a #GtkAccessibleValue
*
* Releases a reference on the given #GtkAccessibleValue.
*/
void
gtk_accessible_value_unref (GtkAccessibleValue *self)
{
g_return_if_fail (self != NULL);
self->ref_count -= 1;
if (self->ref_count == 0)
{
if (self->value_class->finalize != NULL)
self->value_class->finalize (self);
g_free (self);
}
}
/*< private >
* gtk_accessible_value_print:
* @self: a #GtkAccessibleValue
* @buffer: a #GString
*
* Prints the contents of a #GtkAccessibleValue into the given @buffer.
*/
void
gtk_accessible_value_print (const GtkAccessibleValue *self,
GString *buffer)
{
g_return_if_fail (self != NULL);
g_return_if_fail (buffer != NULL);
if (self->value_class->print != NULL)
self->value_class->print (self, buffer);
}
/*< private >
* gtk_accessible_value_to_string:
* @self: a #GtkAccessibleValue
*
* Fills a string with the contents of the given #GtkAccessibleValue.
*
* Returns: (transfer full): a string with the contents of the value
*/
char *
gtk_accessible_value_to_string (const GtkAccessibleValue *self)
{
g_return_val_if_fail (self != NULL, NULL);
GString *buffer = g_string_new (NULL);
gtk_accessible_value_print (self, buffer);
return g_string_free (buffer, FALSE);
}
/*< private >
* gtk_accessible_value_equal:
* @value_a: (nullable): the first #GtkAccessibleValue
* @value_b: (nullable): the second #GtkAccessibleValue
*
* Checks whether @value_a and @value_b are equal.
*
* This function is %NULL-safe.
*
* Returns: %TRUE if the given #GtkAccessibleValue instances are equal,
* and %FALSE otherwise
*/
gboolean
gtk_accessible_value_equal (const GtkAccessibleValue *value_a,
const GtkAccessibleValue *value_b)
{
if (value_a == value_b)
return TRUE;
if (value_a == NULL || value_b == NULL)
return FALSE;
return value_a->value_class->equal (value_a, value_b);
}
typedef enum {
GTK_ACCESSIBLE_COLLECT_INVALID,
GTK_ACCESSIBLE_COLLECT_BOOLEAN,
GTK_ACCESSIBLE_COLLECT_INTEGER,
GTK_ACCESSIBLE_COLLECT_TRISTATE,
GTK_ACCESSIBLE_COLLECT_ENUM
} GtkAccessibleCollectType;
typedef GtkAccessibleValue *(* GtkAccessibleValueConstructor) (void);
typedef struct {
GtkAccessibleState state;
GtkAccessibleCollectType ctype;
const char *state_name;
GCallback ctor;
} GtkAccessibleCollectState;
static const GtkAccessibleCollectState collect_states[] = {
/* | State | Collected type | Name | Constructor |
* |-------------------------------|--------------------------------|-----------|----------------------------------|
*/
{ GTK_ACCESSIBLE_STATE_BUSY, GTK_ACCESSIBLE_COLLECT_BOOLEAN, "busy", (GCallback) gtk_busy_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_CHECKED, GTK_ACCESSIBLE_COLLECT_ENUM, "checked", (GCallback) gtk_checked_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_DISABLED, GTK_ACCESSIBLE_COLLECT_BOOLEAN, "disabled", (GCallback) gtk_disabled_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_EXPANDED, GTK_ACCESSIBLE_COLLECT_TRISTATE, "expanded", (GCallback) gtk_expanded_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_GRABBED, GTK_ACCESSIBLE_COLLECT_TRISTATE, "grabbed", (GCallback) gtk_grabbed_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_HIDDEN, GTK_ACCESSIBLE_COLLECT_BOOLEAN, "hidden", (GCallback) gtk_hidden_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_INVALID, GTK_ACCESSIBLE_COLLECT_ENUM, "invalid", (GCallback) gtk_invalid_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_PRESSED, GTK_ACCESSIBLE_COLLECT_ENUM, "pressed", (GCallback) gtk_pressed_accessible_value_new },
{ GTK_ACCESSIBLE_STATE_SELECTED, GTK_ACCESSIBLE_COLLECT_TRISTATE, "selected", (GCallback) gtk_selected_accessible_value_new },
};
typedef GtkAccessibleValue * (* GtkAccessibleValueBooleanCtor) (gboolean state);
typedef GtkAccessibleValue * (* GtkAccessibleValueIntCtor) (int state);
typedef GtkAccessibleValue * (* GtkAccessibleValueTristateCtor) (int state);
typedef GtkAccessibleValue * (* GtkAccessibleValueEnumCtor) (int state);
/*< private >
* gtk_accessible_value_get_default_for_state:
* @state: a #GtkAccessibleState
*
* Retrieves the #GtkAccessibleValue that contains the default for the
* given @state.
*
* Returns: (transfer full): the #GtkAccessibleValue
*/
GtkAccessibleValue *
gtk_accessible_value_get_default_for_state (GtkAccessibleState state)
{
g_assert (state != GTK_ACCESSIBLE_STATE_NONE);
const GtkAccessibleCollectState *cstate = &collect_states[state];
switch (cstate->state)
{
case GTK_ACCESSIBLE_STATE_BUSY:
return gtk_busy_accessible_value_new (FALSE);
case GTK_ACCESSIBLE_STATE_CHECKED:
return gtk_checked_accessible_value_new (GTK_ACCESSIBLE_CHECKED_UNDEFINED);
case GTK_ACCESSIBLE_STATE_DISABLED:
return gtk_disabled_accessible_value_new (FALSE);
case GTK_ACCESSIBLE_STATE_EXPANDED:
return gtk_expanded_accessible_value_new (GTK_ACCESSIBLE_STATE_UNDEFINED);
case GTK_ACCESSIBLE_STATE_GRABBED:
return gtk_grabbed_accessible_value_new (GTK_ACCESSIBLE_STATE_UNDEFINED);
case GTK_ACCESSIBLE_STATE_HIDDEN:
return gtk_hidden_accessible_value_new (FALSE);
case GTK_ACCESSIBLE_STATE_INVALID:
return gtk_invalid_accessible_value_new (GTK_ACCESSIBLE_INVALID_FALSE);
case GTK_ACCESSIBLE_STATE_PRESSED:
return gtk_pressed_accessible_value_new (GTK_ACCESSIBLE_PRESSED_UNDEFINED);
case GTK_ACCESSIBLE_STATE_SELECTED:
return gtk_selected_accessible_value_new (GTK_ACCESSIBLE_STATE_UNDEFINED);
case GTK_ACCESSIBLE_STATE_NONE:
default:
g_critical ("Unknown value for accessible state “%s”", cstate->state_name);
break;
}
return NULL;
}
/*< private >
* gtk_accessible_value_collect_for_state:
* @state: a #GtkAccessibleState
* @args: a `va_list` reference
*
* Collects and consumes the next item in the @args variadic arguments list,
* and returns a #GtkAccessibleValue for it.
*
* Returns: (transfer full): a #GtkAccessibleValue
*/
GtkAccessibleValue *
gtk_accessible_value_collect_for_state (GtkAccessibleState state,
va_list *args)
{
g_assert (state != GTK_ACCESSIBLE_STATE_NONE);
const GtkAccessibleCollectState *cstate = &collect_states[state];
GtkAccessibleValue *res = NULL;
switch (cstate->ctype)
{
case GTK_ACCESSIBLE_COLLECT_BOOLEAN:
{
GtkAccessibleValueBooleanCtor ctor =
(GtkAccessibleValueBooleanCtor) cstate->ctor;
gboolean value = va_arg (*args, gboolean);
res = (* ctor) (value);
}
break;
case GTK_ACCESSIBLE_COLLECT_INTEGER:
{
GtkAccessibleValueIntCtor ctor =
(GtkAccessibleValueIntCtor) cstate->ctor;
int value = va_arg (*args, int);
res = (* ctor) (value);
}
break;
case GTK_ACCESSIBLE_COLLECT_TRISTATE:
{
GtkAccessibleValueTristateCtor ctor =
(GtkAccessibleValueIntCtor) cstate->ctor;
int value = va_arg (*args, int);
res = (* ctor) (value);
}
break;
case GTK_ACCESSIBLE_COLLECT_ENUM:
{
GtkAccessibleValueEnumCtor ctor =
(GtkAccessibleValueEnumCtor) cstate->ctor;
int value = va_arg (*args, int);
res = (* ctor) (value);
}
break;
case GTK_ACCESSIBLE_COLLECT_INVALID:
default:
g_critical ("Unknown type for accessible state “%s”", cstate->state_name);
break;
}
return res;
}
/*< private >
* gtk_accessible_value_collect_for_state_value:
* @state: a #GtkAccessibleState
* @value: a #GValue
*
* Retrieves the value stored inside @value and returns a #GtkAccessibleValue
* for the given @state.
*
* Returns: (transfer full): a #GtkAccessibleValue
*/
GtkAccessibleValue *
gtk_accessible_value_collect_for_state_value (GtkAccessibleState state,
const GValue *value)
{
g_assert (state != GTK_ACCESSIBLE_STATE_NONE);
const GtkAccessibleCollectState *cstate = &collect_states[state];
GtkAccessibleValue *res = NULL;
switch (cstate->ctype)
{
case GTK_ACCESSIBLE_COLLECT_BOOLEAN:
{
GtkAccessibleValueBooleanCtor ctor =
(GtkAccessibleValueBooleanCtor) cstate->ctor;
gboolean value_ = g_value_get_boolean (value);
res = (* ctor) (value_);
}
break;
case GTK_ACCESSIBLE_COLLECT_INTEGER:
{
GtkAccessibleValueIntCtor ctor =
(GtkAccessibleValueIntCtor) cstate->ctor;
int value_ = g_value_get_int (value);
res = (* ctor) (value_);
}
break;
case GTK_ACCESSIBLE_COLLECT_TRISTATE:
{
GtkAccessibleValueTristateCtor ctor =
(GtkAccessibleValueIntCtor) cstate->ctor;
int value_ = g_value_get_int (value);
res = (* ctor) (value_);
}
break;
case GTK_ACCESSIBLE_COLLECT_ENUM:
{
GtkAccessibleValueEnumCtor ctor =
(GtkAccessibleValueEnumCtor) cstate->ctor;
int value_ = g_value_get_enum (value);
res = (* ctor) (value_);
}
break;
case GTK_ACCESSIBLE_COLLECT_INVALID:
default:
g_critical ("Unknown value type for accessible state “%s”", cstate->state_name);
break;
}
return res;
}

135
gtk/gtkaccessiblevalueprivate.h Normal file
View File

@ -0,0 +1,135 @@
/* gtkaccessiblevalueprivate.h: Accessible value
*
* Copyright 2020 GNOME Foundation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <glib-object.h>
#include "gtkenums.h"
G_BEGIN_DECLS
#define GTK_TYPE_ACCESSIBLE_VALUE (gtk_accessible_value_get_type())
#define GTK_ACCESSIBLE_VALUE_ERROR (gtk_accessible_value_error_quark())
typedef struct _GtkAccessibleValue GtkAccessibleValue;
typedef struct _GtkAccessibleValueClass GtkAccessibleValueClass;
struct _GtkAccessibleValue
{
const GtkAccessibleValueClass *value_class;
int ref_count;
};
struct _GtkAccessibleValueClass
{
const char *type_name;
gsize instance_size;
void (* init) (GtkAccessibleValue *self);
void (* finalize) (GtkAccessibleValue *self);
void (* print) (const GtkAccessibleValue *self,
GString *string);
gboolean (* equal) (const GtkAccessibleValue *value_a,
const GtkAccessibleValue *value_b);
};
typedef enum {
GTK_ACCESSIBLE_VALUE_ERROR_READ_ONLY,
GTK_ACCESSIBLE_VALUE_ERROR_INVALID_VALUE,
GTK_ACCESSIBLE_VALUE_ERROR_INVALID_RANGE,
GTK_ACCESSIBLE_VALUE_ERROR_INVALID_TOKEN
} GtkAccessibleValueError;
GType gtk_accessible_value_get_type (void) G_GNUC_CONST;
GQuark gtk_accessible_value_error_quark (void);
GtkAccessibleValue * gtk_accessible_value_alloc (const GtkAccessibleValueClass *klass);
GtkAccessibleValue * gtk_accessible_value_ref (GtkAccessibleValue *self);
void gtk_accessible_value_unref (GtkAccessibleValue *self);
void gtk_accessible_value_print (const GtkAccessibleValue *self,
GString *buffer);
char * gtk_accessible_value_to_string (const GtkAccessibleValue *self);
gboolean gtk_accessible_value_equal (const GtkAccessibleValue *value_a,
const GtkAccessibleValue *value_b);
GtkAccessibleValue * gtk_accessible_value_get_default_for_state (GtkAccessibleState state);
GtkAccessibleValue * gtk_accessible_value_collect_for_state (GtkAccessibleState state,
va_list *args);
GtkAccessibleValue * gtk_accessible_value_collect_for_state_value (GtkAccessibleState state,
const GValue *value);
typedef enum { /*< prefix=GTK_ACCESSIBLE_CHECKED >*/
GTK_ACCESSIBLE_CHECKED_FALSE = 0,
GTK_ACCESSIBLE_CHECKED_TRUE = 1,
GTK_ACCESSIBLE_CHECKED_UNDEFINED = -1,
GTK_ACCESSIBLE_CHECKED_MIXED = -2
} GtkAccessibleCheckedState;
typedef enum { /*< prefix=GTK_ACCESSIBLE_PRESSED >*/
GTK_ACCESSIBLE_PRESSED_FALSE = 0,
GTK_ACCESSIBLE_PRESSED_TRUE = 1,
GTK_ACCESSIBLE_PRESSED_UNDEFINED = -1,
GTK_ACCESSIBLE_PRESSED_MIXED = -2
} GtkAccessiblePressedState;
typedef enum { /*< prefix=GTK_ACCESSIBLE_INVALID >*/
GTK_ACCESSIBLE_INVALID_FALSE,
GTK_ACCESSIBLE_INVALID_TRUE,
GTK_ACCESSIBLE_INVALID_GRAMMAR,
GTK_ACCESSIBLE_INVALID_SPELLING,
} GtkAccessibleInvalidState;
#define GTK_ACCESSIBLE_STATE_UNDEFINED (-1)
/* Boolean states */
GtkAccessibleValue * gtk_busy_accessible_value_new (gboolean state);
gboolean gtk_busy_accessible_value_get (const GtkAccessibleValue *value);
GtkAccessibleValue * gtk_disabled_accessible_value_new (gboolean state);
gboolean gtk_disabled_accessible_value_get (const GtkAccessibleValue *value);
GtkAccessibleValue * gtk_hidden_accessible_value_new (gboolean state);
gboolean gtk_hidden_accessible_value_get (const GtkAccessibleValue *value);
/* Tri-state states */
GtkAccessibleValue * gtk_expanded_accessible_value_new (int state);
int gtk_expanded_accessible_value_get (const GtkAccessibleValue *value);
GtkAccessibleValue * gtk_grabbed_accessible_value_new (int state);
int gtk_grabbed_accessible_value_get (const GtkAccessibleValue *value);
GtkAccessibleValue * gtk_selected_accessible_value_new (int state);
int gtk_selected_accessible_value_get (const GtkAccessibleValue *value);
/* Token states */
GtkAccessibleValue * gtk_pressed_accessible_value_new (GtkAccessiblePressedState state);
GtkAccessiblePressedState gtk_pressed_accessible_value_get (const GtkAccessibleValue *value);
GtkAccessibleValue * gtk_checked_accessible_value_new (GtkAccessibleCheckedState state);
GtkAccessibleCheckedState gtk_checked_accessible_value_get (const GtkAccessibleValue *value);
GtkAccessibleValue * gtk_invalid_accessible_value_new (GtkAccessibleInvalidState state);
GtkAccessibleInvalidState gtk_invalid_accessible_value_get (const GtkAccessibleValue *value);
G_END_DECLS

495
gtk/gtkaccessiblevaluestatic.c Normal file
View File

@ -0,0 +1,495 @@
/* gtkaccessiblevaluestatic.c: GtkAccessibleValue static implementations
*
* Copyright 2020 GNOME Foundation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkaccessiblevalueprivate.h"
/* {{{ Boolean values */
typedef struct
{
GtkAccessibleValue parent;
gboolean value;
} GtkBooleanAccessibleValue;
static gboolean
gtk_boolean_accessible_value_equal (const GtkAccessibleValue *value_a,
const GtkAccessibleValue *value_b)
{
const GtkBooleanAccessibleValue *bool_a = (GtkBooleanAccessibleValue *) value_a;
const GtkBooleanAccessibleValue *bool_b = (GtkBooleanAccessibleValue *) value_b;
return bool_a->value == bool_b->value;
}
static void
gtk_boolean_accessible_value_print (const GtkAccessibleValue *value,
GString *buffer)
{
const GtkBooleanAccessibleValue *self = (GtkBooleanAccessibleValue *) value;
g_string_append_printf (buffer, "%s", self->value ? "true" : "false");
}
static const GtkAccessibleValueClass GTK_BUSY_ACCESSIBLE_VALUE = {
.type_name = "GtkBusyAccessibleValue",
.instance_size = sizeof (GtkBooleanAccessibleValue),
.equal = gtk_boolean_accessible_value_equal,
.print = gtk_boolean_accessible_value_print,
};
static GtkBooleanAccessibleValue busy_values[] = {
{ { &GTK_BUSY_ACCESSIBLE_VALUE, 1 }, FALSE },
{ { &GTK_BUSY_ACCESSIBLE_VALUE, 1 }, TRUE },
};
GtkAccessibleValue *
gtk_busy_accessible_value_new (gboolean state)
{
if (state)
return gtk_accessible_value_ref ((GtkAccessibleValue *) &busy_values[1]);
return gtk_accessible_value_ref ((GtkAccessibleValue *) &busy_values[0]);
}
gboolean
gtk_busy_accessible_value_get (const GtkAccessibleValue *value)
{
GtkBooleanAccessibleValue *self = (GtkBooleanAccessibleValue *) value;
g_return_val_if_fail (value != NULL, FALSE);
g_return_val_if_fail (value->value_class == &GTK_BUSY_ACCESSIBLE_VALUE, FALSE);
return self->value;
}
static const GtkAccessibleValueClass GTK_DISABLED_ACCESSIBLE_VALUE = {
.type_name = "GtkDisabledAccessibleValue",
.instance_size = sizeof (GtkBooleanAccessibleValue),
.equal = gtk_boolean_accessible_value_equal,
.print = gtk_boolean_accessible_value_print,
};
static GtkBooleanAccessibleValue disabled_values[] = {
{ { &GTK_DISABLED_ACCESSIBLE_VALUE, 1 }, FALSE },
{ { &GTK_DISABLED_ACCESSIBLE_VALUE, 1 }, TRUE },
};
GtkAccessibleValue *
gtk_disabled_accessible_value_new (gboolean state)
{
if (state)
return gtk_accessible_value_ref ((GtkAccessibleValue *) &disabled_values[1]);
return gtk_accessible_value_ref ((GtkAccessibleValue *) &disabled_values[0]);
}
gboolean
gtk_disabled_accessible_value_get (const GtkAccessibleValue *value)
{
GtkBooleanAccessibleValue *self = (GtkBooleanAccessibleValue *) value;
g_return_val_if_fail (value != NULL, FALSE);
g_return_val_if_fail (value->value_class == &GTK_DISABLED_ACCESSIBLE_VALUE, FALSE);
return self->value;
}
static const GtkAccessibleValueClass GTK_HIDDEN_ACCESSIBLE_VALUE = {
.type_name = "GtkHiddenAccessibleValue",
.instance_size = sizeof (GtkBooleanAccessibleValue),
.equal = gtk_boolean_accessible_value_equal,
.print = gtk_boolean_accessible_value_print,
};
static GtkBooleanAccessibleValue hidden_values[] = {
{ { &GTK_HIDDEN_ACCESSIBLE_VALUE, 1 }, FALSE },
{ { &GTK_HIDDEN_ACCESSIBLE_VALUE, 1 }, TRUE },
};
GtkAccessibleValue *
gtk_hidden_accessible_value_new (gboolean state)
{
if (state)
return gtk_accessible_value_ref ((GtkAccessibleValue *) &hidden_values[1]);
return gtk_accessible_value_ref ((GtkAccessibleValue *) &hidden_values[0]);
}
gboolean
gtk_hidden_accessible_value_get (const GtkAccessibleValue *value)
{
GtkBooleanAccessibleValue *self = (GtkBooleanAccessibleValue *) value;
g_return_val_if_fail (value != NULL, FALSE);
g_return_val_if_fail (value->value_class == &GTK_HIDDEN_ACCESSIBLE_VALUE, FALSE);
return self->value;
}
/* }}} */
/* {{{ Tri-state values */
typedef struct {
GtkAccessibleValue parent;
int value;
} GtkTristateAccessibleValue;
static gboolean
gtk_tristate_accessible_value_equal (const GtkAccessibleValue *value_a,
const GtkAccessibleValue *value_b)
{
const GtkTristateAccessibleValue *tri_a = (GtkTristateAccessibleValue *) value_a;
const GtkTristateAccessibleValue *tri_b = (GtkTristateAccessibleValue *) value_b;
return tri_a->value == tri_b->value;
}
static void
gtk_tristate_accessible_value_print (const GtkAccessibleValue *value,
GString *buffer)
{
const GtkTristateAccessibleValue *self = (GtkTristateAccessibleValue *) value;
switch (self->value)
{
case 0:
g_string_append (buffer, "false");
break;
case 1:
g_string_append (buffer, "true");
break;
case -1:
g_string_append (buffer, "undefined");
break;
default:
g_assert_not_reached ();
break;
}
}
static const GtkAccessibleValueClass GTK_EXPANDED_ACCESSIBLE_VALUE = {
.type_name = "GtkExpandedAccessibleValue",
.instance_size = sizeof (GtkTristateAccessibleValue),
.equal = gtk_tristate_accessible_value_equal,
.print = gtk_tristate_accessible_value_print,
};
static GtkTristateAccessibleValue expanded_values[] = {
{ { &GTK_EXPANDED_ACCESSIBLE_VALUE, 1 }, -1 },
{ { &GTK_EXPANDED_ACCESSIBLE_VALUE, 1 }, 0 },
{ { &GTK_EXPANDED_ACCESSIBLE_VALUE, 1 }, 1 },
};
GtkAccessibleValue *
gtk_expanded_accessible_value_new (int state)
{
int index_;
if (state < 0)
index_ = 0;
else if (state == 0)
index_ = 1;
else
index_ = 2;
return gtk_accessible_value_ref ((GtkAccessibleValue *) &expanded_values[index_]);
}
int
gtk_expanded_accessible_value_get (const GtkAccessibleValue *value)
{
GtkTristateAccessibleValue *self = (GtkTristateAccessibleValue *) value;
g_return_val_if_fail (value != NULL, GTK_ACCESSIBLE_STATE_UNDEFINED);
g_return_val_if_fail (value->value_class == &GTK_EXPANDED_ACCESSIBLE_VALUE,
GTK_ACCESSIBLE_STATE_UNDEFINED);
return self->value;
}
static const GtkAccessibleValueClass GTK_GRABBED_ACCESSIBLE_VALUE = {
.type_name = "GtkGrabbedAccessibleValue",
.instance_size = sizeof (GtkTristateAccessibleValue),
.equal = gtk_tristate_accessible_value_equal,
.print = gtk_tristate_accessible_value_print,
};
static GtkTristateAccessibleValue grabbed_values[] = {
{ { &GTK_GRABBED_ACCESSIBLE_VALUE, 1 }, -1 },
{ { &GTK_GRABBED_ACCESSIBLE_VALUE, 1 }, 0 },
{ { &GTK_GRABBED_ACCESSIBLE_VALUE, 1 }, 1 },
};
GtkAccessibleValue *
gtk_grabbed_accessible_value_new (int state)
{
int index_;
if (state < 0)
index_ = 0;
else if (state == 0)
index_ = 1;
else
index_ = 2;
return gtk_accessible_value_ref ((GtkAccessibleValue *) &grabbed_values[index_]);
}
int
gtk_grabbed_accessible_value_get (const GtkAccessibleValue *value)
{
GtkTristateAccessibleValue *self = (GtkTristateAccessibleValue *) value;
g_return_val_if_fail (value != NULL, GTK_ACCESSIBLE_STATE_UNDEFINED);
g_return_val_if_fail (value->value_class == &GTK_GRABBED_ACCESSIBLE_VALUE,
GTK_ACCESSIBLE_STATE_UNDEFINED);
return self->value;
}
static const GtkAccessibleValueClass GTK_SELECTED_ACCESSIBLE_VALUE = {
.type_name = "GtkSelectedAccessibleValue",
.instance_size = sizeof (GtkTristateAccessibleValue),
.equal = gtk_tristate_accessible_value_equal,
.print = gtk_tristate_accessible_value_print,
};
static GtkTristateAccessibleValue selected_values[] = {
{ { &GTK_SELECTED_ACCESSIBLE_VALUE, 1 }, -1 },
{ { &GTK_SELECTED_ACCESSIBLE_VALUE, 1 }, 0 },
{ { &GTK_SELECTED_ACCESSIBLE_VALUE, 1 }, 1 },
};
GtkAccessibleValue *
gtk_selected_accessible_value_new (int state)
{
int index_;
if (state < 0)
index_ = 0;
else if (state == 0)
index_ = 1;
else
index_ = 2;
return gtk_accessible_value_ref ((GtkAccessibleValue *) &selected_values[index_]);
}
int
gtk_selected_accessible_value_get (const GtkAccessibleValue *value)
{
GtkTristateAccessibleValue *self = (GtkTristateAccessibleValue *) value;
g_return_val_if_fail (value != NULL, GTK_ACCESSIBLE_STATE_UNDEFINED);
g_return_val_if_fail (value->value_class == &GTK_SELECTED_ACCESSIBLE_VALUE,
GTK_ACCESSIBLE_STATE_UNDEFINED);
return self->value;
}
/* }}} */
/* {{{ Enumeration values */
typedef struct {
GtkAccessibleValue parent;
int value;
const char *token;
} GtkEnumAccessibleValue;
static gboolean
gtk_enum_accessible_value_equal (const GtkAccessibleValue *value_a,
const GtkAccessibleValue *value_b)
{
const GtkEnumAccessibleValue *enum_a = (GtkEnumAccessibleValue *) value_a;
const GtkEnumAccessibleValue *enum_b = (GtkEnumAccessibleValue *) value_b;
return enum_a->value == enum_b->value;
}
static void
gtk_enum_accessible_value_print (const GtkAccessibleValue *value,
GString *buffer)
{
const GtkEnumAccessibleValue *self = (GtkEnumAccessibleValue *) value;
g_string_append (buffer, self->token);
}
static const GtkAccessibleValueClass GTK_CHECKED_ACCESSIBLE_VALUE = {
.type_name = "GtkCheckedAccessibleValue",
.instance_size = sizeof (GtkEnumAccessibleValue),
.equal = gtk_enum_accessible_value_equal,
.print = gtk_enum_accessible_value_print,
};
static GtkEnumAccessibleValue checked_values[] = {
{ { &GTK_CHECKED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_CHECKED_FALSE, "false" },
{ { &GTK_CHECKED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_CHECKED_TRUE, "true" },
{ { &GTK_CHECKED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_PRESSED_UNDEFINED, "undefined" },
{ { &GTK_CHECKED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_CHECKED_MIXED, "mixed" },
};
GtkAccessibleValue *
gtk_checked_accessible_value_new (GtkAccessibleCheckedState state)
{
int index_;
switch (state)
{
case GTK_ACCESSIBLE_CHECKED_FALSE:
index_ = 0;
break;
case GTK_ACCESSIBLE_CHECKED_TRUE:
index_ = 1;
break;
case GTK_ACCESSIBLE_CHECKED_UNDEFINED:
index_ = 2;
break;
case GTK_ACCESSIBLE_CHECKED_MIXED:
index_ = 3;
break;
default:
g_assert_not_reached ();
return NULL;
}
return gtk_accessible_value_ref ((GtkAccessibleValue *) &checked_values[index_]);
}
GtkAccessibleCheckedState
gtk_checked_accessible_value_get (const GtkAccessibleValue *value)
{
GtkEnumAccessibleValue *self = (GtkEnumAccessibleValue *) value;
g_return_val_if_fail (value != NULL, GTK_ACCESSIBLE_CHECKED_UNDEFINED);
g_return_val_if_fail (value->value_class == &GTK_CHECKED_ACCESSIBLE_VALUE,
GTK_ACCESSIBLE_CHECKED_UNDEFINED);
return self->value;
}
static const GtkAccessibleValueClass GTK_PRESSED_ACCESSIBLE_VALUE = {
.type_name = "GtkPressedAccessibleValue",
.instance_size = sizeof (GtkEnumAccessibleValue),
.equal = gtk_enum_accessible_value_equal,
.print = gtk_enum_accessible_value_print,
};
static GtkEnumAccessibleValue pressed_values[] = {
{ { &GTK_PRESSED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_PRESSED_FALSE, "false" },
{ { &GTK_PRESSED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_PRESSED_TRUE, "true" },
{ { &GTK_PRESSED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_PRESSED_UNDEFINED, "undefined" },
{ { &GTK_PRESSED_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_PRESSED_MIXED, "mixed" },
};
GtkAccessibleValue *
gtk_pressed_accessible_value_new (GtkAccessiblePressedState state)
{
int index_;
switch (state)
{
case GTK_ACCESSIBLE_PRESSED_FALSE:
index_ = 0;
break;
case GTK_ACCESSIBLE_PRESSED_TRUE:
index_ = 1;
break;
case GTK_ACCESSIBLE_PRESSED_UNDEFINED:
index_ = 2;
break;
case GTK_ACCESSIBLE_PRESSED_MIXED:
index_ = 3;
break;
default:
g_assert_not_reached ();
return NULL;
}
return gtk_accessible_value_ref ((GtkAccessibleValue *) &pressed_values[index_]);
}
GtkAccessiblePressedState
gtk_pressed_accessible_value_get (const GtkAccessibleValue *value)
{
GtkEnumAccessibleValue *self = (GtkEnumAccessibleValue *) value;
g_return_val_if_fail (value != NULL, GTK_ACCESSIBLE_PRESSED_UNDEFINED);
g_return_val_if_fail (value->value_class == &GTK_PRESSED_ACCESSIBLE_VALUE,
GTK_ACCESSIBLE_PRESSED_UNDEFINED);
return self->value;
}
static const GtkAccessibleValueClass GTK_INVALID_ACCESSIBLE_VALUE = {
.type_name = "GtkInvalidAccessibleValue",
.instance_size = sizeof (GtkEnumAccessibleValue),
.equal = gtk_enum_accessible_value_equal,
.print = gtk_enum_accessible_value_print,
};
static GtkEnumAccessibleValue invalid_values[] = {
{ { &GTK_INVALID_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_INVALID_FALSE, "false" },
{ { &GTK_INVALID_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_INVALID_TRUE, "true" },
{ { &GTK_INVALID_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_INVALID_GRAMMAR, "grammar" },
{ { &GTK_INVALID_ACCESSIBLE_VALUE, 1 }, GTK_ACCESSIBLE_INVALID_SPELLING, "spelling" },
};
GtkAccessibleValue *
gtk_invalid_accessible_value_new (GtkAccessibleInvalidState state)
{
g_return_val_if_fail (state >= GTK_ACCESSIBLE_INVALID_FALSE &&
state <= GTK_ACCESSIBLE_INVALID_SPELLING,
NULL);
return gtk_accessible_value_ref ((GtkAccessibleValue *) &invalid_values[state]);
}
GtkAccessibleInvalidState
gtk_invalid_accessible_value_get (const GtkAccessibleValue *value)
{
GtkEnumAccessibleValue *self = (GtkEnumAccessibleValue *) value;
g_return_val_if_fail (value != NULL, GTK_ACCESSIBLE_INVALID_FALSE);
g_return_val_if_fail (value->value_class == &GTK_INVALID_ACCESSIBLE_VALUE,
GTK_ACCESSIBLE_INVALID_FALSE);
return self->value;
}
/* }}} */

61
gtk/gtkenums.h
View File

@ -1300,4 +1300,65 @@ typedef enum {
GTK_ACCESSIBLE_ROLE_WINDOW
} GtkAccessibleRole;
/**
* GtkAccessibleState:
* @GTK_ACCESSIBLE_STATE_NONE: An invalid state, used as a sentinel value
* @GTK_ACCESSIBLE_STATE_BUSY: A “busy” state
* @GTK_ACCESSIBLE_STATE_CHECKED: A “checked” state; corresponds to the
* #GtkToggleButton:active property on #GtkToggleButton
* @GTK_ACCESSIBLE_STATE_DISABLED: A “disabled” state; corresponds to the
* #GtkWidget:sensitive property on #GtkWidget
* @GTK_ACCESSIBLE_STATE_EXPANDED: An “expanded” state; corresponds to the
* #GtkExpander:expanded property on #GtkExpander
* @GTK_ACCESSIBLE_STATE_GRABBED: A “grabbed” state; set when a widget is
* being grabbed in a drag and drop operation
* @GTK_ACCESSIBLE_STATE_HIDDEN: A “hidden” state; corresponds to the
* #GtkWidget:visible property on #GtkWidget
* @GTK_ACCESSIBLE_STATE_INVALID: An “invalid” state; set when a widget
* is showing an error
* @GTK_ACCESSIBLE_STATE_PRESSED: A “pressed” state; set when a widget
* is being activated by a pointer
* @GTK_ACCESSIBLE_STATE_SELECTED: A “selected” state; set when a widget
* is selected
*
* The possible accessible state of a #GtkAccessible.
*/
typedef enum {
GTK_ACCESSIBLE_STATE_NONE = -1,
GTK_ACCESSIBLE_STATE_BUSY = 0,
GTK_ACCESSIBLE_STATE_CHECKED,
GTK_ACCESSIBLE_STATE_DISABLED,
GTK_ACCESSIBLE_STATE_EXPANDED,
GTK_ACCESSIBLE_STATE_GRABBED,
GTK_ACCESSIBLE_STATE_HIDDEN,
GTK_ACCESSIBLE_STATE_INVALID,
GTK_ACCESSIBLE_STATE_PRESSED,
GTK_ACCESSIBLE_STATE_SELECTED
} GtkAccessibleState;
typedef enum {
GTK_ACCESSIBLE_PROPERTY_ACTIVE_DESCENDANT,
GTK_ACCESSIBLE_PROPERTY_CONTROLS,
GTK_ACCESSIBLE_PROPERTY_DESCRIBED_BY,
GTK_ACCESSIBLE_PROPERTY_FLOW_TO,
GTK_ACCESSIBLE_PROPERTY_HAS_POPUP,
GTK_ACCESSIBLE_PROPERTY_LABEL,
GTK_ACCESSIBLE_PROPERTY_LABELLED_BY,
GTK_ACCESSIBLE_PROPERTY_LEVEL,
GTK_ACCESSIBLE_PROPERTY_MULTI_LINE,
GTK_ACCESSIBLE_PROPERTY_MULTI_SELECTABLE,
GTK_ACCESSIBLE_PROPERTY_ORIENTATION,
GTK_ACCESSIBLE_PROPERTY_OWNS,
GTK_ACCESSIBLE_PROPERTY_POS_IN_SET,
GTK_ACCESSIBLE_PROPERTY_READ_ONLY,
GTK_ACCESSIBLE_PROPERTY_RELEVANT,
GTK_ACCESSIBLE_PROPERTY_REQUIRED,
GTK_ACCESSIBLE_PROPERTY_SET_SIZE,
GTK_ACCESSIBLE_PROPERTY_SORT,
GTK_ACCESSIBLE_PROPERTY_VALUE_MAX,
GTK_ACCESSIBLE_PROPERTY_VALUE_MIN,
GTK_ACCESSIBLE_PROPERTY_VALUE_NOW,
GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT
} GtkAccessibleProperty;
#endif /* __GTK_ENUMS_H__ */

2
gtk/meson.build
View File

@ -16,6 +16,8 @@ gtk_private_sources = files([
'fnmatch.c',
'tools/gdkpixbufutils.c',
'gsettings-mapping.c',
'gtkaccessiblevalue.c',
'gtkaccessiblevaluestatic.c',
'gtkactionhelper.c',
'gtkactionmuxer.c',
'gtkactionobservable.c',