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/*
* Copyright (C) 2000 Red Hat Software
*
* 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 <pango/pango-font.h>
#include <pango/pango-color.h>
#include <glib-object.h>
G_BEGIN_DECLS
typedef struct _Pango2Attribute Pango2Attribute;
/**
* Pango2AttrValueType:
* @PANGO2_ATTR_VALUE_STRING: A string
* @PANGO2_ATTR_VALUE_INT: An integer
* @PANGO2_ATTR_VALUE_BOOLEAN: A boolean
* @PANGO2_ATTR_VALUE_FLOAT: A floating point number
* @PANGO2_ATTR_VALUE_COLOR: A `Pango2Color`
* @PANGO2_ATTR_VALUE_LANGUAGE: A `Pango2Language`
* @PANGO2_ATTR_VALUE_FONT_DESC: A `Pango2FontDescription`
* @PANGO2_ATTR_VALUE_POINTER: A generic pointer
*
* `Pango2AttrValueType` enumerates the types of values
* that a `Pango2Attribute` can contain.
*
* The `Pango2AttrValueType` of a `Pango2Attribute` is part
* of its type, and can be obtained with `PANGO2_ATTR_VALUE_TYPE()`.
*/
typedef enum
{
PANGO2_ATTR_VALUE_STRING,
PANGO2_ATTR_VALUE_INT,
PANGO2_ATTR_VALUE_BOOLEAN,
PANGO2_ATTR_VALUE_FLOAT,
PANGO2_ATTR_VALUE_COLOR,
PANGO2_ATTR_VALUE_LANGUAGE,
PANGO2_ATTR_VALUE_FONT_DESC,
PANGO2_ATTR_VALUE_POINTER
} Pango2AttrValueType;
/**
* Pango2AttrAffects:
* @PANGO2_ATTR_AFFECTS_NONE: The attribute does not affect rendering
* @PANGO2_ATTR_AFFECTS_ITEMIZATION: The attribute affecs itemization
* @PANGO2_ATTR_AFFECTS_BREAKING: The attribute affects `Pango2LogAttr` determination
* @PANGO2_ATTR_AFFECTS_SHAPING: The attribute affects shaping
* @PANGO2_ATTR_AFFECTS_RENDERING: The attribute affects rendering
*
* A `Pango2AttrAffects` value indicates what part of Pango2's processing
* pipeline is affected by an attribute.
*
* Marking an attribute with `PANGO2_ATTR_AFFECTS_ITEMIZATION` ensures
* that the attribute values are constant across items.
*/
typedef enum
{
PANGO2_ATTR_AFFECTS_NONE = 0,
PANGO2_ATTR_AFFECTS_ITEMIZATION = 1 << 0,
PANGO2_ATTR_AFFECTS_BREAKING = 1 << 1,
PANGO2_ATTR_AFFECTS_SHAPING = 1 << 2,
PANGO2_ATTR_AFFECTS_RENDERING = 1 << 3
} Pango2AttrAffects;
/**
* Pango2AttrMerge:
* @PANGO2_ATTR_MERGE_OVERRIDES: Only the attribute with the narrowest range is used
* @PANGO2_ATTR_MERGE_ACCUMULATES: All attributes with overlapping range are kept
*
* A `Pango2AttrMerge` value indicates how overlapping attribute values
* should be reconciled to determine the effective attribute value.
*
* These options influence the @extra_attrs returned by
* [method@Pango2.AttrIterator.get_font].
*/
typedef enum
{
PANGO2_ATTR_MERGE_OVERRIDES,
PANGO2_ATTR_MERGE_ACCUMULATES
} Pango2AttrMerge;
/**
* PANGO2_ATTR_TYPE_VALUE_TYPE:
* @type: an attribute type
*
* Extracts the `Pango2AttrValueType` from an attribute type.
*/
#define PANGO2_ATTR_TYPE_VALUE_TYPE(type) ((Pango2AttrValueType)((type) & 0xff))
/**
* PANGO2_ATTR_TYPE_AFFECTS:
* @type: an attribute type
*
* Extracts the `Pango2AttrAffects` flags from an attribute type.
*/
#define PANGO2_ATTR_TYPE_AFFECTS(type) ((Pango2AttrAffects)(((type) >> 8) & 0xf))
/**
* PANGO2_ATTR_TYPE_MERGE:
* @type: an attribute type
*
* Extracts the `Pango2AttrMerge` flags from an attribute type.
*/
#define PANGO2_ATTR_TYPE_MERGE(type) ((Pango2AttrMerge)(((type) >> 12) & 0xf))
/**
* PANGO2_ATTR_VALUE_TYPE:
* @attr: a `Pango2Attribute`
*
* Obtains the `Pango2AttrValueType of a `Pango2Attribute`.
*/
#define PANGO2_ATTR_VALUE_TYPE(attr) PANGO2_ATTR_TYPE_VALUE_TYPE (pango2_attribute_type (attr))
/**
* PANGO2_ATTR_AFFECTS:
* @attr: a `Pango2Attribute`
*
* Obtains the `Pango2AttrAffects` flags of a `Pango2Attribute`.
*/
#define PANGO2_ATTR_AFFECTS(attr) PANGO2_ATTR_TYPE_AFFECTS (pango2_attribute_type (attr))
/**
* PANGO2_ATTR_MERGE:
* @attr: a `Pango2Attribute`
*
* Obtains the `Pango2AttrMerge` flags of a `Pango2Attribute`.
*/
#define PANGO2_ATTR_MERGE(attr) PANGO2_ATTR_TYPE_MERGE (pango2_attribute_type (attr))
/**
* PANGO2_ATTR_INDEX_FROM_TEXT_BEGINNING:
*
* Value for @start_index in `Pango2Attribute` that indicates
* the beginning of the text.
*/
#define PANGO2_ATTR_INDEX_FROM_TEXT_BEGINNING ((guint)0)
/**
* PANGO2_ATTR_INDEX_TO_TEXT_END: (value 4294967295)
*
* Value for @end_index in `Pango2Attribute` that indicates
* the end of the text.
*/
#define PANGO2_ATTR_INDEX_TO_TEXT_END ((guint)(G_MAXUINT + 0))
/**
* Pango2AttrDataCopyFunc:
* @value: value to copy
*
* Callback to duplicate the value of an attribute.
*
* Return value: new copy of @value.
**/
typedef gpointer (*Pango2AttrDataCopyFunc) (gconstpointer value);
/**
* Pango2AttrDataSerializeFunc:
* @value: value to serialize
*
* Callback to serialize the value of an attribute.
*
* Return value: a newly allocated string holding the serialization of @value
*/
typedef char * (*Pango2AttrDataSerializeFunc) (gconstpointer value);
PANGO2_AVAILABLE_IN_ALL
GType pango2_attribute_get_type (void) G_GNUC_CONST;
PANGO2_AVAILABLE_IN_ALL
guint pango2_attr_type_register (const char *name,
Pango2AttrValueType value_type,
Pango2AttrAffects affects,
Pango2AttrMerge merge,
Pango2AttrDataCopyFunc copy,
GDestroyNotify destroy,
GEqualFunc equal,
Pango2AttrDataSerializeFunc serialize);
PANGO2_AVAILABLE_IN_ALL
const char * pango2_attr_type_get_name (guint type) G_GNUC_CONST;
PANGO2_AVAILABLE_IN_ALL
Pango2Attribute * pango2_attribute_copy (const Pango2Attribute *attr);
PANGO2_AVAILABLE_IN_ALL
void pango2_attribute_destroy (Pango2Attribute *attr);
PANGO2_AVAILABLE_IN_ALL
gboolean pango2_attribute_equal (const Pango2Attribute *attr1,
const Pango2Attribute *attr2) G_GNUC_PURE;
PANGO2_AVAILABLE_IN_ALL
Pango2Attribute * pango2_attribute_new (guint type,
gconstpointer value);
PANGO2_AVAILABLE_IN_ALL
guint pango2_attribute_type (const Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
void pango2_attribute_set_range (Pango2Attribute *attribute,
guint start_index,
guint end_index);
PANGO2_AVAILABLE_IN_ALL
void pango2_attribute_get_range (Pango2Attribute *attribute,
guint *start_index,
guint *end_index);
PANGO2_AVAILABLE_IN_ALL
const char * pango2_attribute_get_string (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
Pango2Language * pango2_attribute_get_language (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
int pango2_attribute_get_int (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
gboolean pango2_attribute_get_boolean (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
double pango2_attribute_get_float (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
Pango2Color * pango2_attribute_get_color (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
Pango2FontDescription * pango2_attribute_get_font_desc (Pango2Attribute *attribute);
PANGO2_AVAILABLE_IN_ALL
gpointer pango2_attribute_get_pointer (Pango2Attribute *attribute);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(Pango2Attribute, pango2_attribute_destroy)
G_END_DECLS
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