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