#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 = 130, /* orange */ COLOR_WARN_REVERSE = 172, /* 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 = 172, /* 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 = 172, /* 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_allowed; extern int net_operations_allowed; 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