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/*
* Copyright (C) 2002 Red Hat, Inc.
*
* This 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 program 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
* General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* The interfaces in this file are subject to change at any time. */
#ifndef vte_ring_h_included
#define vte_ring_h_included
#include <glib.h>
#include "debug.h"
#include "vteunistr.h"
G_BEGIN_DECLS
#define VTE_DEF_FG 256
#define VTE_DEF_BG 257
#define VTE_BOLD_FG 258
#define VTE_DIM_FG 259
#define VTE_DEF_HL 260
#define VTE_CUR_BG 261
#define VTE_PALETTE_SIZE 262
/*
* VteCellAttr: A single cell style attributes
*
* Ordered by most commonly changed attributes, to
* optimize the compact representation.
*/
typedef struct _VteCellAttr {
guint32 fragment: 1; /* A continuation cell. */
guint32 columns: 4; /* Number of visible columns
(as determined by g_unicode_iswide(c)).
Also abused for tabs; bug 353610
Keep at least 4 for tabs to work
*/
guint32 bold: 1;
guint32 fore: 9; /* Index into color palette */
guint32 back: 9; /* Index into color palette. */
guint32 standout: 1;
guint32 underline: 1;
guint32 strikethrough: 1;
guint32 reverse: 1;
guint32 blink: 1;
guint32 half: 1;
guint32 invisible: 1;
/* unused; bug 499893
guint32 protect: 1;
*/
/* 30 bits */
} VteCellAttr;
ASSERT_STATIC (sizeof (VteCellAttr) == 4);
/*
* VteCell: A single cell's data
*/
typedef struct _VteCell {
vteunistr c;
VteCellAttr attr;
} VteCell;
ASSERT_STATIC (sizeof (VteCell) == 8);
static const union {
VteCell cell;
struct {
guint32 c;
guint32 attr;
} i;
} basic_cell = {
{
0,
{
0, /* fragment */
1, /* columns */
0, /* bold */
VTE_DEF_FG, /* fore */
VTE_DEF_BG, /* back */
0, /* standout */
0, /* underline */
0, /* strikethrough */
0, /* reverse */
0, /* blink */
0, /* half */
0 /* invisible */
}
}
};
/*
* VteRowAttr: A single row's attributes
*/
typedef struct _VteRowAttr {
guint8 soft_wrapped: 1;
} VteRowAttr;
ASSERT_STATIC (sizeof (VteRowAttr) == 1);
/*
* VteRowData: A single row's data
*/
typedef struct _VteRowData {
VteCell *cells;
guint16 len;
VteRowAttr attr;
} VteRowData;
#define _vte_row_data_length(__row) ((__row)->len + 0)
static inline const VteCell *
_vte_row_data_get (const VteRowData *row, guint col)
{
if (G_UNLIKELY (row->len <= col))
return NULL;
return &row->cells[col];
}
static inline VteCell *
_vte_row_data_get_writable (VteRowData *row, guint col)
{
if (G_UNLIKELY (row->len <= col))
return NULL;
return &row->cells[col];
}
void _vte_row_data_insert (VteRowData *row, guint col, const VteCell *cell);
void _vte_row_data_append (VteRowData *row, const VteCell *cell);
void _vte_row_data_remove (VteRowData *row, guint col);
void _vte_row_data_fill (VteRowData *row, const VteCell *cell, guint len);
void _vte_row_data_shrink (VteRowData *row, guint max_len);
/*
* VteRingChunk: A chunk of the scrollback buffer ring
*/
typedef enum _VteRingChunkType VteRingChunkType;
enum _VteRingChunkType {
VTE_RING_CHUNK_TYPE_INVALID,
VTE_RING_CHUNK_TYPE_WRITABLE,
VTE_RING_CHUNK_TYPE_COMPACT
};
typedef struct _VteRingChunk VteRingChunk;
struct _VteRingChunk {
VteRingChunkType type; /* Chunk implementation type */
VteRingChunk *prev_chunk, *next_chunk;
guint start, end;
};
typedef struct _VteRingChunkWritable {
VteRingChunk base;
guint mask;
VteRowData *array;
} VteRingChunkWritable;
/*
* VteRing: A scrollback buffer ring
*/
typedef struct _VteRing VteRing;
struct _VteRing {
guint max;
VteRowData cached_row;
guint cached_row_num;
VteRingChunk *tail, *cursor;
VteRingChunkWritable head[1];
};
#define _vte_ring_contains(__ring, __position) \
(((__position) >= (__ring)->tail->start) && \
((__position) < (__ring)->head->base.end))
#define _vte_ring_delta(__ring) ((__ring)->tail->start + 0)
#define _vte_ring_length(__ring) ((__ring)->head->base.end - (__ring)->tail->start)
#define _vte_ring_next(__ring) ((__ring)->head->base.end + 0)
const VteRowData *_vte_ring_index (VteRing *ring, guint position);
VteRowData *_vte_ring_index_writable (VteRing *ring, guint position);
void _vte_ring_init (VteRing *ring, guint max_rows);
void _vte_ring_fini (VteRing *ring);
void _vte_ring_resize (VteRing *ring, guint max_rows);
void _vte_ring_shrink (VteRing *ring, guint max_len);
VteRowData *_vte_ring_insert (VteRing *ring, guint position);
VteRowData *_vte_ring_append (VteRing *ring);
void _vte_ring_remove (VteRing *ring, guint position);
G_END_DECLS
#endif
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