ui.h

   1 #ifndef UI_H
   2 #define UI_H
   3
   4 #include <stdbool.h>
   5 #include <stdarg.h>
   6 #include <termkey.h>
   7
   8 /* enable large file optimization for files larger than: */
   9 #define UI_LARGE_FILE_SIZE (1 << 25)
  10 /* enable large file optimization for files containing lines longer than: */
  11 #define UI_LARGE_FILE_LINE_SIZE (1 << 16)
  12
  13 typedef struct Ui Ui;
  14 typedef struct UiWin UiWin;
  15
  16 enum UiLayout {
  17         UI_LAYOUT_HORIZONTAL,
  18         UI_LAYOUT_VERTICAL,
  19 };
  20
  21 enum UiOption {
  22         UI_OPTION_NONE = 0,
  23         UI_OPTION_LINE_NUMBERS_ABSOLUTE = 1 << 0,
  24         UI_OPTION_LINE_NUMBERS_RELATIVE = 1 << 1,
  25         UI_OPTION_SYMBOL_SPACE = 1 << 2,
  26         UI_OPTION_SYMBOL_TAB = 1 << 3,
  27         UI_OPTION_SYMBOL_TAB_FILL = 1 << 4,
  28         UI_OPTION_SYMBOL_EOL = 1 << 5,
  29         UI_OPTION_SYMBOL_EOF = 1 << 6,
  30         UI_OPTION_CURSOR_LINE = 1 << 7,
  31         UI_OPTION_STATUSBAR = 1 << 8,
  32         UI_OPTION_ONELINE = 1 << 9,
  33         UI_OPTION_LARGE_FILE = 1 << 10,
  34 };
  35
  36 enum UiStyle {
  37         UI_STYLE_LEXER_MAX = 64,
  38         UI_STYLE_DEFAULT,
  39         UI_STYLE_CURSOR,
  40         UI_STYLE_CURSOR_PRIMARY,
  41         UI_STYLE_CURSOR_LINE,
  42         UI_STYLE_SELECTION,
  43         UI_STYLE_LINENUMBER,
  44         UI_STYLE_LINENUMBER_CURSOR,
  45         UI_STYLE_COLOR_COLUMN,
  46         UI_STYLE_STATUS,
  47         UI_STYLE_STATUS_FOCUSED,
  48         UI_STYLE_SEPARATOR,
  49         UI_STYLE_INFO,
  50         UI_STYLE_EOF,
  51         UI_STYLE_MAX,
  52 };
  53
  54 #if CONFIG_CURSES
  55 typedef uint64_t CellAttr;
  56 typedef short CellColor;
  57
  58 static inline bool cell_color_equal(CellColor c1, CellColor c2) {
  59         return c1 == c2;
  60 }
  61 #else
  62 typedef uint8_t CellAttr;
  63 typedef struct {
  64         uint8_t r, g, b;
  65         uint8_t index;
  66 } CellColor;
  67
  68 static inline bool cell_color_equal(CellColor c1, CellColor c2) {
  69         if (c1.index != (uint8_t)-1 || c2.index != (uint8_t)-1)
  70                 return c1.index == c2.index;
  71         return c1.r == c2.r && c1.g == c2.g && c1.b == c2.b;
  72 }
  73
  74 #endif
  75
  76 typedef struct {
  77         CellAttr attr;
  78         CellColor fg, bg;
  79 } CellStyle;
  80
  81 #include "vis.h"
  82 #include "text.h"
  83 #include "view.h"
  84
  85 struct Ui {
  86         bool (*init)(Ui*, Vis*);
  87         void (*free)(Ui*);
  88         void (*resize)(Ui*);
  89         UiWin* (*window_new)(Ui*, Win*, enum UiOption);
  90         void (*window_free)(UiWin*);
  91         void (*window_focus)(UiWin*);
  92         void (*window_swap)(UiWin*, UiWin*);
  93         void (*die)(Ui*, const char *msg, va_list ap) __attribute__((noreturn));
  94         void (*info)(Ui*, const char *msg, va_list ap);
  95         void (*info_hide)(Ui*);
  96         void (*arrange)(Ui*, enum UiLayout);
  97         void (*draw)(Ui*);
  98         void (*redraw)(Ui*);
  99         void (*suspend)(Ui*);
 100         void (*resume)(Ui*);
 101         bool (*getkey)(Ui*, TermKeyKey*);
 102         void (*terminal_save)(Ui*);
 103         void (*terminal_restore)(Ui*);
 104         TermKey* (*termkey_get)(Ui*);
 105         int (*colors)(Ui*);
 106 };
 107
 108 struct UiWin {
 109         CellStyle (*style_get)(UiWin*, enum UiStyle);
 110         void (*status)(UiWin*, const char *txt);
 111         void (*options_set)(UiWin*, enum UiOption);
 112         enum UiOption (*options_get)(UiWin*);
 113         bool (*style_define)(UiWin*, int id, const char *style);
 114         int (*window_width)(UiWin*);
 115         int (*window_height)(UiWin*);
 116 };
 117
 118 bool is_default_color(CellColor c);
 119
 120 #endif