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155 lines
4.9 KiB
C
155 lines
4.9 KiB
C
#ifndef __TEXTBUFFER_VIEW_H
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#define __TEXTBUFFER_VIEW_H
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#include "textbuffer.h"
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#include "term.h"
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typedef struct _TEXT_BUFFER_VIEW_REC TEXT_BUFFER_VIEW_REC;
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/* if ypos == -1, don't print anything, just return the indent size */
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typedef int (*INDENT_FUNC) (TEXT_BUFFER_VIEW_REC *view,
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LINE_REC *line, int ypos);
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typedef struct {
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const unsigned char *start;
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int indent;
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INDENT_FUNC indent_func;
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int color;
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#ifdef TERM_TRUECOLOR
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unsigned int fg24, bg24;
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#endif
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/* first word in line belong to the end of the last word in
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previous line */
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unsigned int continues:1;
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} LINE_CACHE_SUB_REC;
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typedef struct {
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time_t last_access;
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int count; /* number of real lines */
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/* variable sized array, actually. starts from the second line,
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so size of it is count-1 */
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LINE_CACHE_SUB_REC lines[1];
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} LINE_CACHE_REC;
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typedef struct {
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int refcount;
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int width;
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GHashTable *line_cache;
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/* should contain the same value for each cache that uses the
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same buffer */
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unsigned char update_counter;
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/* number of real lines used by the last line in buffer */
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int last_linecount;
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} TEXT_BUFFER_CACHE_REC;
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struct _TEXT_BUFFER_VIEW_REC {
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TEXT_BUFFER_REC *buffer;
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GSList *siblings; /* other views that use the same buffer */
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TERM_WINDOW *window;
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int width, height;
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int default_indent;
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INDENT_FUNC default_indent_func;
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unsigned int longword_noindent:1;
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unsigned int scroll:1; /* scroll down automatically when at bottom */
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unsigned int utf8:1; /* use UTF8 in this view */
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TEXT_BUFFER_CACHE_REC *cache;
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int ypos; /* cursor position - visible area is 0..height-1 */
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LINE_REC *startline; /* line at the top of the screen */
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int subline; /* number of "real lines" to skip from `startline' */
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/* marks the bottom of the text buffer */
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LINE_REC *bottom_startline;
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int bottom_subline;
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/* how many empty lines are in screen. a screenful when started
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or used /CLEAR */
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int empty_linecount;
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/* window is at the bottom of the text buffer */
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unsigned int bottom:1;
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/* if !bottom - new text has been printed since we were at bottom */
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unsigned int more_text:1;
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/* Window needs a redraw */
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unsigned int dirty:1;
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/* Bookmarks to the lines in the buffer - removed automatically
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when the line gets removed from buffer */
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GHashTable *bookmarks;
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};
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/* Create new view. */
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TEXT_BUFFER_VIEW_REC *textbuffer_view_create(TEXT_BUFFER_REC *buffer,
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int width, int height,
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int scroll, int utf8);
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/* Destroy the view. */
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void textbuffer_view_destroy(TEXT_BUFFER_VIEW_REC *view);
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/* Change the default indent position */
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void textbuffer_view_set_default_indent(TEXT_BUFFER_VIEW_REC *view,
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int default_indent,
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int longword_noindent,
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INDENT_FUNC indent_func);
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void textbuffer_views_unregister_indent_func(INDENT_FUNC indent_func);
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void textbuffer_view_set_scroll(TEXT_BUFFER_VIEW_REC *view, int scroll);
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void textbuffer_view_set_utf8(TEXT_BUFFER_VIEW_REC *view, int utf8);
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/* Resize the view. */
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void textbuffer_view_resize(TEXT_BUFFER_VIEW_REC *view, int width, int height);
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/* Clear the view, don't actually remove any lines from buffer. */
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void textbuffer_view_clear(TEXT_BUFFER_VIEW_REC *view);
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#define textbuffer_view_get_lines(view) \
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((view)->buffer->first_line)
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/* Scroll the view up/down */
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void textbuffer_view_scroll(TEXT_BUFFER_VIEW_REC *view, int lines);
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/* Scroll to specified line */
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void textbuffer_view_scroll_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line);
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/* Return line cache */
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LINE_CACHE_REC *textbuffer_view_get_line_cache(TEXT_BUFFER_VIEW_REC *view,
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LINE_REC *line);
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/*
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Functions for manipulating the text buffer, using these commands update
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all views that use the buffer.
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*/
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/* Update some line in the buffer which has been modified using
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textbuffer_append() or textbuffer_insert(). */
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void textbuffer_view_insert_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line);
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/* Remove one line from buffer. */
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void textbuffer_view_remove_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line);
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/* Remove all lines from buffer. */
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void textbuffer_view_remove_all_lines(TEXT_BUFFER_VIEW_REC *view);
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void textbuffer_view_remove_lines_by_level(TEXT_BUFFER_VIEW_REC *view, int level);
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/* Set a bookmark in view */
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void textbuffer_view_set_bookmark(TEXT_BUFFER_VIEW_REC *view,
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const char *name, LINE_REC *line);
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/* Set a bookmark in view to the bottom line */
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void textbuffer_view_set_bookmark_bottom(TEXT_BUFFER_VIEW_REC *view,
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const char *name);
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/* Return the line for bookmark */
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LINE_REC *textbuffer_view_get_bookmark(TEXT_BUFFER_VIEW_REC *view,
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const char *name);
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/* Specify window where the changes in view should be drawn,
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NULL disables it. */
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void textbuffer_view_set_window(TEXT_BUFFER_VIEW_REC *view,
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TERM_WINDOW *window);
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/* Redraw the view */
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void textbuffer_view_redraw(TEXT_BUFFER_VIEW_REC *view);
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void textbuffer_view_init(void);
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void textbuffer_view_deinit(void);
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#endif
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