84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
#include <locale.h>
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#include <unistd.h>
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#include "curse.h"
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#define BASE_DELAY 1000000
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#define CRS_LOCALE "en_US.UTF-8"
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/* Set ncurses terminal mode (buffering, character processing,
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* Key->SIG handling, and other termios(3) functionality).
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*/
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int termmode(const enum crs_termmode mode) {
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switch (mode) {
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case TMODE_CBREAK:
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return cbreak();
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case TMODE_RAW:
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return raw();
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case TMODE_NOCBREAK:
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return nocbreak();
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case TMODE_NORAW:
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return noraw();
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default:
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/* defaulting is not possible. */
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return 1;
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}
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}
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/* Apply a default IO configuration for an ncurses WINDOW.
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*/
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static inline void __conf_window(WINDOW *const win) {
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nodelay(win, TRUE); // getch(3x) nonblocking IO
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keypad(win, TRUE); // allow function keys
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// intrflush(3x) - flush terminal input buffer on interrupt key
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intrflush(win, FALSE);
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}
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/* Initialise ncurses for our usecase.
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* WARNING: This function should only be called once.
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*/
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void init_ncurses(void) {
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// ncurses expects a locale for consistent behaviour
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setlocale(LC_ALL, CRS_LOCALE);
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/* NCurses Init */
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initscr();
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/* WARNING: no you shouldn't delwin(stdscr) it breaks everything... */
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__conf_window(stdscr);
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start_color();
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/* Screen Configuration */
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termmode(TMODE_CBREAK);
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noecho(); // manually echo from getch(3x)
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curs_set(0); // hide cursor
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}
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/* Initialise (with default IO configuration) a new ncurses WINDOW.
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*/
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WINDOW *new_window(const int x, const int y, const int width,
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const int height) {
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WINDOW *win = newwin(height, width, y, x);
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__conf_window(win);
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return win;
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}
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/* Initialise (with default IO configuration) the root ncurses WINDOW.
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* NOTE: This is typically done via initscr(3x) and called "stdscr".
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*/
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WINDOW *root_window(void) {
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WINDOW *rootwin = new_window(0, 0, COLS, LINES);
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__conf_window(rootwin);
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return rootwin;
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}
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/* Resize and move (if resized successfully) an ncurses WINDOW.
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* Returns ERR (1) on fail, and OK (0) on success.
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* NOTE: Failure occurs if width or height <= 0,
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* NOTE: or if the x,y coordinate is outside the screen bounds.
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*/
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int resizemv_window(const int x, const int y, const int width, const int height,
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WINDOW *const win) {
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return wresize(win, height, width) || mvwin(win, y, x);
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}
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