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/* Pango
* pango-item.h: Structure for storing run information
*
* Copyright (C) 2000 Red Hat Software
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __PANGO_ITEM_H__
#define __PANGO_ITEM_H__
#include <pango/pango-types.h>
#include <pango/pango-attributes.h>
G_BEGIN_DECLS
typedef struct _PangoAnalysis PangoAnalysis;
typedef struct _PangoItem PangoItem;
/**
* PANGO_ANALYSIS_FLAG_CENTERED_BASELINE:
*
* Whether the segment should be shifted to center around the baseline.
*
* This is mainly used in vertical writing directions.
*
* Since: 1.16
*/
#define PANGO_ANALYSIS_FLAG_CENTERED_BASELINE (1 << 0)
/**
* PANGO_ANALYSIS_FLAG_IS_ELLIPSIS:
*
* Whether this run holds ellipsized text.
*
* Since: 1.36.7
*/
#define PANGO_ANALYSIS_FLAG_IS_ELLIPSIS (1 << 1)
/**
* PANGO_ANALYSIS_FLAG_NEED_HYPHEN:
*
* Whether to add a hyphen at the end of the run during shaping.
*
* Since: 1.44
*/
#define PANGO_ANALYSIS_FLAG_NEED_HYPHEN (1 << 2)
/**
* PangoAnalysis:
* @shape_engine: unused, reserved
* @lang_engine: unused, reserved
* @font: the font for this segment.
* @level: the bidirectional level for this segment.
* @gravity: the glyph orientation for this segment (A `PangoGravity`).
* @flags: boolean flags for this segment (Since: 1.16).
* @script: the detected script for this segment (A `PangoScript`) (Since: 1.18).
* @language: the detected language for this segment.
* @extra_attrs: extra attributes for this segment.
*
* The `PangoAnalysis` structure stores information about
* the properties of a segment of text.
*/
struct _PangoAnalysis
{
#ifndef __GI_SCANNER__
PangoEngineShape *shape_engine;
PangoEngineLang *lang_engine;
#else
gpointer shape_engine;
gpointer lang_engine;
#endif
PangoFont *font;
guint8 level;
guint8 gravity;
guint8 flags;
guint8 script;
PangoLanguage *language;
GSList *extra_attrs;
};
/**
* PangoItem:
* @offset: byte offset of the start of this item in text.
* @length: length of this item in bytes.
* @num_chars: number of Unicode characters in the item.
* @analysis: analysis results for the item.
*
* The `PangoItem` structure stores information about a segment of text.
*
* You typically obtain `PangoItems` by itemizing a piece of text
* with [func@itemize].
*/
struct _PangoItem
{
int offset;
int length;
int num_chars;
PangoAnalysis analysis;
};
#define PANGO_TYPE_ITEM (pango_item_get_type ())
PANGO_AVAILABLE_IN_ALL
GType pango_item_get_type (void) G_GNUC_CONST;
PANGO_AVAILABLE_IN_ALL
PangoItem * pango_item_new (void);
PANGO_AVAILABLE_IN_ALL
PangoItem * pango_item_copy (PangoItem *item);
PANGO_AVAILABLE_IN_ALL
void pango_item_free (PangoItem *item);
PANGO_AVAILABLE_IN_1_54
int pango_item_get_char_offset (PangoItem *item);
PANGO_AVAILABLE_IN_ALL
PangoItem * pango_item_split (PangoItem *orig,
int split_index,
int split_offset);
PANGO_AVAILABLE_IN_1_44
void pango_item_apply_attrs (PangoItem *item,
PangoAttrIterator *iter);
PANGO_AVAILABLE_IN_ALL
GList * pango_reorder_items (GList *items);
/* Itemization */
PANGO_AVAILABLE_IN_ALL
GList * pango_itemize (PangoContext *context,
const char *text,
int start_index,
int length,
PangoAttrList *attrs,
PangoAttrIterator *cached_iter);
PANGO_AVAILABLE_IN_1_4
GList * pango_itemize_with_base_dir (PangoContext *context,
PangoDirection base_dir,
const char *text,
int start_index,
int length,
PangoAttrList *attrs,
PangoAttrIterator *cached_iter);
G_END_DECLS
#endif /* __PANGO_ITEM_H__ */
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