#ifndef __TELIVA_H__
#define __TELIVA_H__
/* Each category of primitives below shows a few options from high to low
* levels of abstraction.
* (Lower levels aren't complete or well-designed, just what code outside
* teliva.c needs.) */
/* Integrate with Lua VM */
extern char** Argv;
extern int handle_image(lua_State* L, char** argv, int n);
extern int load_editor_buffer_to_current_definition_in_image(lua_State* L);
extern void save_to_current_definition_and_editor_buffer(lua_State* L, const char* definition);
extern void save_editor_state(int rowoff, int coloff, int cy, int cx);
/* Standard UI elements */
extern void render_trusted_teliva_data(lua_State* L);
extern void draw_menu_item(const char* key, const char* name);
extern void draw_string_on_menu(const char* s);
extern int menu_column;
/* Error reporting */
extern const char* Previous_error;
extern int report_in_developer_mode(lua_State* L, int status);
extern void render_previous_error(void);
// Some names for hotkeys beyond those provided by ncurses.
enum KEY_ACTION {
KEY_NULL = 0,
CTRL_A = 1,
CTRL_B = 2,
CTRL_C = 3,
CTRL_D = 4,
CTRL_E = 5,
CTRL_F = 6,
CTRL_G = 7,
CTRL_H = 8,
TAB = 9,
ENTER = 10,
CTRL_K = 11,
CTRL_L = 12,
CTRL_Q = 17,
CTRL_R = 18,
CTRL_S = 19,
CTRL_U = 21,
CTRL_X = 24,
CTRL_SLASH = 31,
CTRL_UNDERSCORE = 31,
DELETE = 127,
};
// Colors (experimental)
// Primary goal here: Keep text readable regardless of OS, terminal emulator
// and color scheme. Unfortunately I don't yet have a good answer, so this
// approach may yet change. Current approach:
// - Hardcode colors so that we can be sure we use legible combinations of
// foreground and background.
// - Use only the terminal palette in the range 16-255.
// - Not all terminals may support more than 256 colors. (I'm not yet sure
// everyone has even 256 colors. If you don't, please let me know:
// http://akkartik.name/contact)
// - Many terminals provide color schemes which give the ability to tweak
// colors 0-15. This makes it hard to assume specific combinations are
// legible. I'm hoping most terminal emulators don't tend to encourage
// messing with colors 16-255. (Please let me know if you know of
// counter-examples.)
//
// For now, you have to edit these values if you want to adjust colors in the
// editing environment. Check out https://www.robmeerman.co.uk/unix/256colours
// for a map of available colors.
// Toggle between a few color schemes
#define COLOR_SCHEME 0
#if COLOR_SCHEME == 0
// Light color scheme.
enum color {
COLOR_FOREGROUND = 238, // almost black
COLOR_BACKGROUND = 253, // almost white
COLOR_FADE = 244, // closer to background
COLOR_MENU_ALTERNATE = 248,
COLOR_SELECTABLE_FOREGROUND = 238,
COLOR_SELECTABLE_BACKGROUND = 250,
COLOR_ERROR_FOREGROUND = COLOR_BACKGROUND,
COLOR_ERROR_BACKGROUND = 124, // deep red
COLOR_LUA_COMMENT = 27, // blue
COLOR_LUA_KEYWORD = 172, // orange
COLOR_LUA_CONSTANT = 31, // cyan
COLOR_MATCH_FOREGROUND = COLOR_BACKGROUND,
COLOR_MATCH_BACKGROUND = 28, // green
};
#elif COLOR_SCHEME == 1
// Dark color scheme.
enum color {
COLOR_FOREGROUND = 253, // almost white
COLOR_BACKGROUND = 238, // almost black
COLOR_FADE = 244, // closer to background
COLOR_MENU_ALTERNATE = 244,
COLOR_SELECTABLE_FOREGROUND = 238,
COLOR_SELECTABLE_BACKGROUND = 250,
COLOR_ERROR_FOREGROUND = COLOR_FOREGROUND,
COLOR_ERROR_BACKGROUND = 124, // deep red
COLOR_LUA_COMMENT = 39, // blue
COLOR_LUA_KEYWORD = 172, // orange
COLOR_LUA_CONSTANT = 37, // cyan
COLOR_MATCH_FOREGROUND = COLOR_BACKGROUND,
COLOR_MATCH_BACKGROUND = 28, // green
};
#elif COLOR_SCHEME == 2
// Solarized dark.
enum color {
COLOR_FOREGROUND = 250, // almost white
COLOR_BACKGROUND = 24, // dark blue-green
COLOR_FADE = 246, // closer to background
COLOR_MENU_ALTERNATE = 244,
COLOR_SELECTABLE_FOREGROUND = 250,
COLOR_SELECTABLE_BACKGROUND = 31,
COLOR_ERROR_FOREGROUND = 250,
COLOR_ERROR_BACKGROUND = 124, // deep red
COLOR_LUA_COMMENT = 45, // light blue
COLOR_LUA_KEYWORD = 172, // orange
COLOR_LUA_CONSTANT = 37, // cyan
COLOR_MATCH_FOREGROUND = COLOR_FOREGROUND,
COLOR_MATCH_BACKGROUND = 125, // magenta
};
#endif
enum color_pair {
COLOR_PAIR_NORMAL = 0,
COLOR_PAIR_SELECTABLE = 1,
COLOR_PAIR_FADE = 2,
COLOR_PAIR_MENU_ALTERNATE = 3,
COLOR_PAIR_LUA_COMMENT = 4,
COLOR_PAIR_LUA_KEYWORD = 5,
COLOR_PAIR_LUA_CONSTANT = 6,
COLOR_PAIR_MATCH = 7,
COLOR_PAIR_MENU = 254, // reserved for teliva; apps shouldn't use it
COLOR_PAIR_ERROR = 255, // reserved for teliva; apps shouldn't use it
};
#endif