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#ifndef __TELIVA_H__
#define __TELIVA_H__
/*** Some details for Teliva apps to be aware of. */
/* Some names for hotkeys beyond those provided by ncurses. */
/* TODO: expose these in the curses wrappers. */
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_N = 14,
CTRL_P = 16,
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_SAFE_NORMAL = 28, /* green */
COLOR_SAFE_REVERSE = 46, /* green */
COLOR_WARN_NORMAL = 208, /* orange */
COLOR_WARN_REVERSE = 208, /* orange */
COLOR_RISK_NORMAL = 196, /* red */
COLOR_RISK_REVERSE = 196, /* 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_SAFE_NORMAL = 46, /* green */
COLOR_SAFE_REVERSE = 28, /* green */
COLOR_WARN_NORMAL = 208, /* orange */
COLOR_WARN_REVERSE = 130, /* orange */
COLOR_RISK_NORMAL = 196, /* red */
COLOR_RISK_REVERSE = 196, /* 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_SAFE_NORMAL = 46, /* green */
COLOR_SAFE_REVERSE = 28, /* green */
COLOR_WARN_NORMAL = 208, /* orange */
COLOR_WARN_REVERSE = 130, /* orange */
COLOR_RISK_NORMAL = 201, /* red */
COLOR_RISK_REVERSE = 196, /* 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_SAFE = 251, /* reserved for teliva; apps shouldn't use it */
COLOR_PAIR_WARN = 252, /* reserved for teliva; apps shouldn't use it */
COLOR_PAIR_RISK = 253, /* reserved for teliva; apps shouldn't use it */
COLOR_PAIR_MENU = 254, /* reserved for teliva; apps shouldn't use it */
COLOR_PAIR_ERROR = 255, /* reserved for teliva; apps shouldn't use it */
};
/*** C Interface */
/* 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 char* Previous_message;
extern int handle_image(lua_State* L, char** argv, int n);
extern void developer_mode(lua_State* L);
extern void permissions_mode(lua_State* L);
extern int file_operations_permitted;
extern int net_operations_permitted;
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);
#endif
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