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/* Pango
* pango-layout-private.h: Internal structures of PangoLayout
*
* Copyright (C) 2004 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_LAYOUT_PRIVATE_H__
#define __PANGO_LAYOUT_PRIVATE_H__
#include <pango/pango-layout.h>
G_BEGIN_DECLS
struct _PangoLayout
{
GObject parent_instance;
/* If you add fields to PangoLayout be sure to update _copy()
* unless you add a value between copy_begin and copy_end.
*/
/* Referenced items */
PangoContext *context;
PangoAttrList *attrs;
PangoFontDescription *font_desc;
PangoTabArray *tabs;
/* Dupped */
gchar *text;
/* Value fields. These will be memcpy'd in _copy() */
int copy_begin;
guint serial;
guint context_serial;
int length; /* length of text in bytes */
int n_chars; /* number of characters in layout */
int width; /* wrap/ellipsize width, in device units, or -1 if not set */
int height; /* ellipsize width, in device units if positive, number of lines if negative */
int indent; /* amount by which first line should be shorter */
int spacing; /* spacing between lines */
guint justify : 1;
guint alignment : 2;
guint single_paragraph : 1;
guint auto_dir : 1;
guint wrap : 2; /* PangoWrapMode */
guint is_wrapped : 1; /* Whether the layout has any wrapped lines */
guint ellipsize : 2; /* PangoEllipsizeMode */
guint is_ellipsized : 1; /* Whether the layout has any ellipsized lines */
int unknown_glyphs_count; /* number of unknown glyphs */
/* some caching */
guint logical_rect_cached : 1;
guint ink_rect_cached : 1;
PangoRectangle logical_rect;
PangoRectangle ink_rect;
int tab_width; /* Cached width of a tab. -1 == not yet calculated */
int copy_end;
/* Not copied during _copy() */
PangoLogAttr *log_attrs; /* Logical attributes for layout's text */
GSList *lines;
guint line_count; /* Number of lines in @lines. 0 if lines is %NULL */
};
typedef struct _Extents Extents;
struct _Extents
{
/* Vertical position of the line's baseline in layout coords */
int baseline;
/* Line extents in layout coords */
PangoRectangle ink_rect;
PangoRectangle logical_rect;
};
struct _PangoLayoutIter
{
PangoLayout *layout;
GSList *line_list_link;
PangoLayoutLine *line;
/* If run is NULL, it means we're on a "virtual run"
* at the end of the line with 0 width
*/
GSList *run_list_link;
PangoLayoutRun *run; /* FIXME nuke this, just keep the link */
int index;
/* list of Extents for each line in layout coordinates */
Extents *line_extents;
int line_index;
/* X position of the current run */
int run_x;
/* Width of the current run */
int run_width;
/* this run is left-to-right */
gboolean ltr;
/* X position of the left side of the current cluster */
int cluster_x;
/* The width of the current cluster */
int cluster_width;
/* glyph offset to the current cluster start */
int cluster_start;
/* first glyph in the next cluster */
int next_cluster_glyph;
/* number of Unicode chars in current cluster */
int cluster_num_chars;
/* visual position of current character within the cluster */
int character_position;
/* the real width of layout */
int layout_width;
};
gboolean _pango_layout_line_ellipsize (PangoLayoutLine *line,
PangoAttrList *attrs,
int goal_width);
void _pango_layout_get_iter (PangoLayout *layout,
PangoLayoutIter *iter);
void _pango_layout_iter_destroy (PangoLayoutIter *iter);
G_END_DECLS
#endif /* __PANGO_LAYOUT_PRIVATE_H__ */
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