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#ifndef __TEXTBUFFER_VIEW_H
#define __TEXTBUFFER_VIEW_H
#include "textbuffer.h"
#include "term.h"
typedef struct _TEXT_BUFFER_VIEW_REC TEXT_BUFFER_VIEW_REC;
/* if ypos == -1, don't print anything, just return the indent size */
typedef int (*INDENT_FUNC) (TEXT_BUFFER_VIEW_REC *view,
LINE_REC *line, int ypos);
typedef struct {
unsigned char *start;
int indent;
INDENT_FUNC indent_func;
int color;
/* first word in line belong to the end of the last word in
previous line */
unsigned int continues:1;
} LINE_CACHE_SUB_REC;
typedef struct {
time_t last_access;
int count; /* number of real lines */
/* variable sized array, actually. starts from the second line,
so size of it is count-1 */
LINE_CACHE_SUB_REC lines[1];
} LINE_CACHE_REC;
typedef struct {
int refcount;
int width;
GHashTable *line_cache;
/* should contain the same value for each cache that uses the
same buffer */
unsigned char update_counter;
/* number of real lines used by the last line in buffer */
int last_linecount;
} TEXT_BUFFER_CACHE_REC;
struct _TEXT_BUFFER_VIEW_REC {
TEXT_BUFFER_REC *buffer;
GSList *siblings; /* other views that use the same buffer */
TERM_WINDOW *window;
int width, height;
int default_indent;
INDENT_FUNC default_indent_func;
unsigned int longword_noindent:1;
unsigned int scroll:1; /* scroll down automatically when at bottom */
TEXT_BUFFER_CACHE_REC *cache;
int ypos; /* cursor position - visible area is 0..height-1 */
LINE_REC *startline; /* line at the top of the screen */
int subline; /* number of "real lines" to skip from `startline' */
/* marks the bottom of the text buffer */
LINE_REC *bottom_startline;
int bottom_subline;
/* how many empty lines are in screen. a screenful when started
or used /CLEAR */
int empty_linecount;
/* window is at the bottom of the text buffer */
unsigned int bottom:1;
/* if !bottom - new text has been printed since we were at bottom */
unsigned int more_text:1;
/* Window needs a redraw */
unsigned int dirty:1;
/* Bookmarks to the lines in the buffer - removed automatically
when the line gets removed from buffer */
GHashTable *bookmarks;
};
/* Create new view. */
TEXT_BUFFER_VIEW_REC *textbuffer_view_create(TEXT_BUFFER_REC *buffer,
int width, int height,
int scroll);
/* Destroy the view. */
void textbuffer_view_destroy(TEXT_BUFFER_VIEW_REC *view);
/* Change the default indent position */
void textbuffer_view_set_default_indent(TEXT_BUFFER_VIEW_REC *view,
int default_indent,
int longword_noindent,
INDENT_FUNC indent_func);
void textbuffer_views_unregister_indent_func(INDENT_FUNC indent_func);
void textbuffer_view_set_scroll(TEXT_BUFFER_VIEW_REC *view, int scroll);
/* Resize the view. */
void textbuffer_view_resize(TEXT_BUFFER_VIEW_REC *view, int width, int height);
/* Clear the view, don't actually remove any lines from buffer. */
void textbuffer_view_clear(TEXT_BUFFER_VIEW_REC *view);
#define textbuffer_view_get_lines(view) \
((view)->buffer->first_line)
/* Scroll the view up/down */
void textbuffer_view_scroll(TEXT_BUFFER_VIEW_REC *view, int lines);
/* Scroll to specified line */
void textbuffer_view_scroll_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line);
/* Return line cache */
LINE_CACHE_REC *textbuffer_view_get_line_cache(TEXT_BUFFER_VIEW_REC *view,
LINE_REC *line);
/*
Functions for manipulating the text buffer, using these commands update
all views that use the buffer.
*/
/* Update some line in the buffer which has been modified using
textbuffer_append() or textbuffer_insert(). */
void textbuffer_view_insert_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line);
/* Remove one line from buffer. */
void textbuffer_view_remove_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line);
/* Remove all lines from buffer. */
void textbuffer_view_remove_all_lines(TEXT_BUFFER_VIEW_REC *view);
/* Set a bookmark in view */
void textbuffer_view_set_bookmark(TEXT_BUFFER_VIEW_REC *view,
const char *name, LINE_REC *line);
/* Set a bookmark in view to the bottom line */
void textbuffer_view_set_bookmark_bottom(TEXT_BUFFER_VIEW_REC *view,
const char *name);
/* Return the line for bookmark */
LINE_REC *textbuffer_view_get_bookmark(TEXT_BUFFER_VIEW_REC *view,
const char *name);
/* Specify window where the changes in view should be drawn,
NULL disables it. */
void textbuffer_view_set_window(TEXT_BUFFER_VIEW_REC *view,
TERM_WINDOW *window);
/* Redraw the view */
void textbuffer_view_redraw(TEXT_BUFFER_VIEW_REC *view);
void textbuffer_view_init(void);
void textbuffer_view_deinit(void);
#endif
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