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/* Pango
*
* Copyright (C) 2021 Matthias Clasen
*
* 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_PRIVATE_H__
#define __PANGO_ITEM_PRIVATE_H__
#include <pango/pango-item.h>
#include <pango/pango-break.h>
G_BEGIN_DECLS
/**
* We have to do some extra work for adding the char_offset field
* to PangoItem to preserve ABI in the face of pango's open-coded
* structs.
*
* Internally, pango uses the PangoItemPrivate type, and we use
* a bit in the PangoAnalysis flags to indicate whether we are
* dealing with a PangoItemPrivate struct or not.
*/
#define PANGO_ANALYSIS_FLAG_HAS_CHAR_OFFSET (1 << 7)
typedef struct _PangoAnalysisPrivate PangoAnalysisPrivate;
struct _PangoAnalysisPrivate
{
gpointer reserved;
PangoFont *size_font;
PangoFont *font;
guint8 level;
guint8 gravity;
guint8 flags;
guint8 script;
PangoLanguage *language;
GSList *extra_attrs;
};
typedef struct _PangoItemPrivate PangoItemPrivate;
#if defined(__x86_64__) && !defined(__ILP32__)
struct _PangoItemPrivate
{
int offset;
int length;
int num_chars;
int char_offset;
PangoAnalysis analysis;
};
#else
struct _PangoItemPrivate
{
int offset;
int length;
int num_chars;
PangoAnalysis analysis;
int char_offset;
};
#endif
G_STATIC_ASSERT (offsetof (PangoItem, offset) == offsetof (PangoItemPrivate, offset));
G_STATIC_ASSERT (offsetof (PangoItem, length) == offsetof (PangoItemPrivate, length));
G_STATIC_ASSERT (offsetof (PangoItem, num_chars) == offsetof (PangoItemPrivate, num_chars));
G_STATIC_ASSERT (offsetof (PangoItem, analysis) == offsetof (PangoItemPrivate, analysis));
void pango_analysis_collect_features (const PangoAnalysis *analysis,
hb_feature_t *features,
guint length,
guint *num_features);
void pango_analysis_set_size_font (PangoAnalysis *analysis,
PangoFont *font);
PangoFont * pango_analysis_get_size_font (const PangoAnalysis *analysis);
GList * pango_itemize_with_font (PangoContext *context,
PangoDirection base_dir,
const char *text,
int start_index,
int length,
PangoAttrList *attrs,
PangoAttrIterator *cached_iter,
const PangoFontDescription *desc);
GList * pango_itemize_post_process_items (PangoContext *context,
const char *text,
PangoLogAttr *log_attrs,
GList *items);
void pango_item_unsplit (PangoItem *orig,
int split_index,
int split_offset);
typedef struct _ItemProperties ItemProperties;
struct _ItemProperties
{
guint uline_single : 1;
guint uline_double : 1;
guint uline_low : 1;
guint uline_error : 1;
guint strikethrough : 1;
guint oline_single : 1;
guint showing_space : 1;
guint no_paragraph_break : 1;
guint shape_set : 1;
int letter_spacing;
int absolute_line_height;
double line_height;
PangoRectangle *shape_ink_rect;
PangoRectangle *shape_logical_rect;
};
void pango_item_get_properties (PangoItem *item,
ItemProperties *properties);
G_END_DECLS
#endif /* __PANGO_ITEM_PRIVATE_H__ */
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