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#ifndef UI_H
#define UI_H
#include <stdbool.h>
#include <stdarg.h>
#include <termkey.h>
/* enable large file optimization for files larger than: */
#define UI_LARGE_FILE_SIZE (1 << 25)
/* enable large file optimization for files containing lines longer than: */
#define UI_LARGE_FILE_LINE_SIZE (1 << 16)
#define UI_MAX_WIDTH 1024
#define UI_MAX_HEIGHT 1024
enum UiLayout {
UI_LAYOUT_HORIZONTAL,
UI_LAYOUT_VERTICAL,
};
enum UiOption {
UI_OPTION_NONE = 0,
UI_OPTION_LINE_NUMBERS_ABSOLUTE = 1 << 0,
UI_OPTION_LINE_NUMBERS_RELATIVE = 1 << 1,
UI_OPTION_SYMBOL_SPACE = 1 << 2,
UI_OPTION_SYMBOL_TAB = 1 << 3,
UI_OPTION_SYMBOL_TAB_FILL = 1 << 4,
UI_OPTION_SYMBOL_EOL = 1 << 5,
UI_OPTION_SYMBOL_EOF = 1 << 6,
UI_OPTION_CURSOR_LINE = 1 << 7,
UI_OPTION_STATUSBAR = 1 << 8,
UI_OPTION_ONELINE = 1 << 9,
UI_OPTION_LARGE_FILE = 1 << 10,
};
enum UiStyle {
UI_STYLE_LEXER_MAX = 64,
UI_STYLE_DEFAULT,
UI_STYLE_CURSOR,
UI_STYLE_CURSOR_PRIMARY,
UI_STYLE_CURSOR_LINE,
UI_STYLE_SELECTION,
UI_STYLE_LINENUMBER,
UI_STYLE_LINENUMBER_CURSOR,
UI_STYLE_COLOR_COLUMN,
UI_STYLE_STATUS,
UI_STYLE_STATUS_FOCUSED,
UI_STYLE_SEPARATOR,
UI_STYLE_INFO,
UI_STYLE_EOF,
UI_STYLE_MAX,
};
#if CONFIG_CURSES
typedef uint64_t CellAttr;
typedef short CellColor;
#else
typedef uint8_t CellAttr;
typedef struct {
uint8_t r, g, b;
uint8_t index;
} CellColor;
#endif
typedef struct {
CellAttr attr;
CellColor fg, bg;
} CellStyle;
typedef struct {
char data[16]; /* utf8 encoded character displayed in this cell (might be more than
one Unicode codepoint. might also not be the same as in the
underlying text, for example tabs get expanded */
size_t len; /* number of bytes the character displayed in this cell uses, for
characters which use more than 1 column to display, their length
is stored in the leftmost cell whereas all following cells
occupied by the same character have a length of 0. */
int width; /* display width i.e. number of columns occupied by this character */
CellStyle style; /* colors and attributes used to display this cell */
} Cell;
struct Ui;
struct Win;
typedef struct UiWin {
struct Ui *ui; /* ui which manages this window */
struct Win *win; /* editor window being displayed */
int id; /* unique identifier for this window */
int width, height; /* window dimension including status bar */
int x, y; /* window position */
int sidebar_width; /* width of the sidebar showing line numbers etc. */
struct UiWin *next, *prev; /* pointers to neighbouring windows */
enum UiOption options; /* display settings for this window */
} UiWin;
struct Vis;
typedef struct Ui {
struct Vis *vis; /* editor instance to which this ui belongs */
UiWin *windows; /* all windows managed by this ui */
UiWin *selwin; /* the currently selected layout */
char info[UI_MAX_WIDTH]; /* info message displayed at the bottom of the screen */
int width, height; /* terminal dimensions available for all windows */
enum UiLayout layout; /* whether windows are displayed horizontally or vertically */
TermKey *termkey; /* libtermkey instance to handle keyboard input (stdin or /dev/tty) */
size_t ids; /* bit mask of in use window ids */
size_t styles_size; /* #bytes allocated for styles array */
CellStyle *styles; /* each window has UI_STYLE_MAX different style definitions */
size_t cells_size; /* #bytes allocated for 2D grid (grows only) */
Cell *cells; /* 2D grid of cells, at least as large as current terminal size */
bool doupdate; /* Whether to update the screen after refreshing contents */
} Ui;
#include "view.h"
#include "vis.h"
#include "text.h"
#define UI_OPTIONS_GET(ui) ((ui) ? (ui)->options : 0)
Ui *ui_terminal_new(void);
int ui_terminal_colors(void);
void ui_terminal_free(Ui*);
void ui_terminal_restore(Ui*);
void ui_terminal_resume(Ui*);
void ui_terminal_save(Ui*, bool fscr);
void ui_terminal_suspend(Ui*);
__attribute__((noreturn)) void ui_die(Ui *, const char *, va_list);
bool ui_init(Ui *, Vis *);
void ui_arrange(Ui*, enum UiLayout);
void ui_draw(Ui*);
void ui_info_hide(Ui *);
void ui_info_show(Ui *, const char *, va_list);
void ui_redraw(Ui*);
void ui_resize(Ui*);
UiWin *ui_window_new(Ui *, Win *, enum UiOption);
void ui_window_focus(UiWin *);
void ui_window_free(UiWin *);
void ui_window_swap(UiWin *, UiWin *);
bool ui_getkey(Ui *, TermKeyKey *);
bool ui_style_define(UiWin *win, int id, const char *style);
bool ui_window_style_set_pos(UiWin *win, int x, int y, enum UiStyle id);
void ui_window_style_set(UiWin *win, Cell *cell, enum UiStyle id);
void ui_window_options_set(UiWin *win, enum UiOption options);
void ui_window_status(UiWin *win, const char *status);
#endif
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